Merge pull request #750 from epi052/742-748-state-file-bug-fixes

multiple bug fixes / small improvements
bumped version to 2.7.3
2026-05-22 12:11:13 -03:00 · 2022-12-29 19:57:23 -06:00 · 2022-12-29 15:56:56 -06:00 · 2022-12-29 15:55:50 -06:00 · 2022-12-29 15:43:57 -06:00 · 2022-12-29 15:32:22 -06:00
126 changed files with 28959 additions and 8662 deletions
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -0,0 +1,480 @@
+{
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "joohoi",
+      "name": "Joona Hoikkala",
+      "avatar_url": "https://avatars.githubusercontent.com/u/5235109?v=4",
+      "profile": "https://io.fi",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
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+      "name": "J Savage",
+      "avatar_url": "https://avatars.githubusercontent.com/u/20546041?v=4",
+      "profile": "https://github.com/jsav0",
+      "contributions": [
+        "infra",
+        "doc"
+      ]
+    },
+    {
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+      "name": "Thomas Gotwig",
+      "avatar_url": "https://avatars.githubusercontent.com/u/30773779?v=4",
+      "profile": "http://www.tgotwig.dev",
+      "contributions": [
+        "infra",
+        "doc"
+      ]
+    },
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+      "profile": "https://github.com/spikecodes",
+      "contributions": [
+        "infra",
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+    },
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+      "contributions": [
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+      "contributions": [
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+      "contributions": [
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+      "contributions": [
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+      "name": "Sophie Brun",
+      "avatar_url": "https://avatars.githubusercontent.com/u/7712154?v=4",
+      "profile": "https://github.com/sbrun",
+      "contributions": [
+        "infra"
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+      "name": "black-A",
+      "avatar_url": "https://avatars.githubusercontent.com/u/30686803?v=4",
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+      "profile": "http://BitThr3at.github.io",
+      "contributions": [
+        "bug"
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+      "name": "Ayoub Elaich",
+      "avatar_url": "https://avatars.githubusercontent.com/u/32225186?v=4",
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+      "contributions": [
+        "bug"
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+      "avatar_url": "https://avatars.githubusercontent.com/u/1208121?v=4",
+      "profile": "https://github.com/HenryHoggard",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
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+      "name": "SleepiPanda",
+      "avatar_url": "https://avatars.githubusercontent.com/u/6428561?v=4",
+      "profile": "https://github.com/SleepiPanda",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "uBadRequest",
+      "name": "Bad Requests",
+      "avatar_url": "https://avatars.githubusercontent.com/u/47282747?v=4",
+      "profile": "https://github.com/uBadRequest",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "dnaka91",
+      "name": "Dominik Nakamura",
+      "avatar_url": "https://avatars.githubusercontent.com/u/36804488?v=4",
+      "profile": "https://home.dnaka91.rocks",
+      "contributions": [
+        "infra"
+      ]
+    },
+    {
+      "login": "hunter0x8",
+      "name": "Muhammad Ahsan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/46222314?v=4",
+      "profile": "https://github.com/hunter0x8",
+      "contributions": [
+        "bug"
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+    {
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+      "avatar_url": "https://avatars.githubusercontent.com/u/34527333?v=4",
+      "profile": "https://github.com/cortantief",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    },
+    {
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+      "name": "Daniel Saxton",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2658661?v=4",
+      "profile": "https://github.com/dsaxton",
+      "contributions": [
+        "ideas",
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+    },
+    {
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+      "avatar_url": "https://avatars.githubusercontent.com/u/16690056?v=4",
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+      "contributions": [
+        "ideas"
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+    {
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+      "name": "Justin Steven",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1893909?v=4",
+      "profile": "https://ring0.lol",
+      "contributions": [
+        "ideas"
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+      "name": "7047payloads",
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+      "contributions": [
+        "ideas",
+        "code"
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+    },
+    {
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+      "name": "Ryan Montgomery",
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+      "contributions": [
+        "ideas"
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+      "contributions": [
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+    {
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+      "name": "Jason Haddix",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3488554?v=4",
+      "profile": "https://twitter.com/Jhaddix",
+      "contributions": [
+        "ideas",
+        "bug"
+      ]
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+    {
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+      "name": "Limn0",
+      "avatar_url": "https://avatars.githubusercontent.com/u/67125885?v=4",
+      "profile": "https://github.com/ThisLimn0",
+      "contributions": [
+        "bug"
+      ]
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+    {
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+      "name": "0xdf",
+      "avatar_url": "https://avatars.githubusercontent.com/u/76954092?v=4",
+      "profile": "https://github.com/0xdf223",
+      "contributions": [
+        "bug",
+        "ideas"
+      ]
+    },
+    {
+      "login": "Flangyver",
+      "name": "Flangyver",
+      "avatar_url": "https://avatars.githubusercontent.com/u/59575870?v=4",
+      "profile": "https://github.com/Flangyver",
+      "contributions": [
+        "ideas"
+      ]
+    },
+    {
+      "login": "DonatoReis",
+      "name": "PeakyBlinder",
+      "avatar_url": "https://avatars.githubusercontent.com/u/93531354?v=4",
+      "profile": "https://github.com/DonatoReis",
+      "contributions": [
+        "ideas"
+      ]
+    },
+    {
+      "login": "postmodern",
+      "name": "Postmodern",
+      "avatar_url": "https://avatars.githubusercontent.com/u/12671?v=4",
+      "profile": "https://postmodern.github.io/",
+      "contributions": [
+        "ideas"
+      ]
+    },
+    {
+      "login": "herrcykel",
+      "name": "O",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1936757?v=4",
+      "profile": "https://github.com/herrcykel",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "udoprog",
+      "name": "John-John Tedro",
+      "avatar_url": "https://avatars.githubusercontent.com/u/111092?v=4",
+      "profile": "http://udoprog.github.io/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "kmanc",
+      "name": "kmanc",
+      "avatar_url": "https://avatars.githubusercontent.com/u/14863147?v=4",
+      "profile": "https://github.com/kmanc",
+      "contributions": [
+        "bug",
+        "code"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "feroxbuster",
+  "projectOwner": "epi052",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "skipCi": true,
+  "commitConvention": "angular"
+}
--- a/.cargo/config
+++ b/.cargo/config
@@ -0,0 +1,5 @@
+[target.armv7-unknown-linux-gnueabihf]
+linker = "arm-linux-gnueabihf-gcc"
+
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-linux-gnu-gcc"
--- a/.github/FUNDING.yml
+++ b/.github/FUNDING.yml
@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+github: [epi052]
+ko_fi: epi052
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -7,16 +7,20 @@ Long form explanations of most of the items below can be found in the [CONTRIBUT
 - [ ] Your PR description references the associated issue (i.e. fixes #123456)
 - [ ] Code is in its own branch
 - [ ] Branch name is related to the PR contents
- [ ] PR targets master
+- [ ] PR targets main

 ## Static analysis checks
 - [ ] All rust files are formatted using `cargo fmt`
- [ ] All `clippy` checks pass when running `cargo clippy --all-targets --all-features -- -D warnings -A clippy::deref_addrof`
+- [ ] All `clippy` checks pass when running `cargo clippy --all-targets --all-features -- -D warnings -A clippy::mutex-atomic`
 - [ ] All existing tests pass

 ## Documentation
 - [ ] New code is documented using [doc comments](https://doc.rust-lang.org/stable/rust-by-example/meta/doc.html)
- [ ] Documentation about your PR is included in the README, as needed
+- [ ] Documentation about your PR is included in the `docs`, as needed. The docs live in a [separate repository](https://epi052.github.io/feroxbuster-docs/docs/). Update the appropriate pages at the links below.
+  - [ ] update [example config file section](https://epi052.github.io/feroxbuster-docs/docs/configuration/ferox-config-toml/)
+  - [ ] update [help output section](https://epi052.github.io/feroxbuster-docs/docs/configuration/command-line/)
+  - [ ] add an [example](https://epi052.github.io/feroxbuster-docs/docs/examples/)
+  - [ ] update [comparison table](https://epi052.github.io/feroxbuster-docs/docs/compare/)

 ## Additional Tests
 - [ ] New code is unit tested
--- a/.github/stale.yml
+++ b/.github/stale.yml
@@ -6,6 +6,7 @@ daysUntilClose: 7
 exemptLabels:
  - pinned
  - security
+  - confirmed
 # Label to use when marking an issue as stale
 staleLabel: stale
 # Comment to post when marking an issue as stale. Set to `false` to disable
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,11 +4,13 @@ on: [push]

 jobs:
  build-nix:
+    env:
+      IN_PIPELINE: true
    runs-on: ${{ matrix.os }}
-    if: github.ref == 'refs/heads/master'
+    if: github.ref == 'refs/heads/main'
    strategy:
      matrix:
-        type: [ubuntu-x64, ubuntu-x86]
+        type: [ubuntu-x64, ubuntu-x86, armv7, aarch64]
        include:
          - type: ubuntu-x64
            os: ubuntu-latest
@@ -22,12 +24,25 @@ jobs:
            name: x86-linux-feroxbuster
            path: target/i686-unknown-linux-musl/release/feroxbuster
            pkg_config_path: /usr/lib/i686-linux-gnu/pkgconfig
+          - type: armv7
+            os: ubuntu-latest
+            target: armv7-unknown-linux-gnueabihf
+            name: armv7-feroxbuster
+            path: target/armv7-unknown-linux-gnueabihf/release/feroxbuster
+            pkg_config_path: /usr/lib/x86_64-linux-gnu/pkgconfig
+          - type: aarch64
+            os: ubuntu-latest
+            target: aarch64-unknown-linux-gnu
+            name: aarch64-feroxbuster
+            path: target/aarch64-unknown-linux-gnu/release/feroxbuster
+            pkg_config_path: /usr/lib/x86_64-linux-gnu/pkgconfig
    steps:
      - uses: actions/checkout@v2
      - name: Install System Dependencies
        run: |
+          env
          sudo apt-get update
-          sudo apt-get install -y --no-install-recommends libssl-dev pkg-config
+          sudo apt-get install -y --no-install-recommends libssl-dev pkg-config gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
@@ -43,7 +58,7 @@ jobs:
          args: --release --target=${{ matrix.target }}
      - name: Strip symbols from binary
        run: |
-          strip -s ${{ matrix.path }}
+          strip -s ${{ matrix.path }} || arm-linux-gnueabihf-strip -s ${{ matrix.path }} || aarch64-linux-gnu-strip -s ${{ matrix.path }}
      - name: Build tar.gz for homebrew installs
        if: matrix.type == 'ubuntu-x64'
        run: |
@@ -58,22 +73,28 @@ jobs:
          name: ${{ matrix.name }}.tar.gz
          path: ${{ matrix.name }}.tar.gz

-  build-deb:
-    needs: [build-nix]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@master
-      - name: Deb Build
-        uses: ebbflow-io/cargo-deb-amd64-ubuntu@1.0
-      - name: Upload Deb Artifact
-        uses: actions/upload-artifact@v2
-        with:
-          name: feroxbuster_amd64.deb
-          path: ./target/x86_64-unknown-linux-musl/debian/*
+  # build-deb:
+  #   needs: [build-nix]
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/checkout@master
+  #     - name: Install cargo-deb
+  #       run: cargo install -f cargo-deb
+  #     - name: Install musl toolchain
+  #       run: rustup target add x86_64-unknown-linux-musl
+  #     - name: Deb Build
+  #       run: cargo deb --target=x86_64-unknown-linux-musl
+  #     - name: Upload Deb Artifact
+  #       uses: actions/upload-artifact@v2
+  #       with:
+  #         name: feroxbuster_amd64.deb
+  #         path: ./target/x86_64-unknown-linux-musl/debian/*

  build-macos:
+    env:
+      IN_PIPELINE: true
    runs-on: macos-latest
-    if: github.ref == 'refs/heads/master'
+    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
@@ -102,8 +123,10 @@ jobs:
          path: x86_64-macos-feroxbuster.tar.gz

  build-windows:
+    env:
+      IN_PIPELINE: true
    runs-on: ${{ matrix.os }}
-    if: github.ref == 'refs/heads/master'
+    if: github.ref == 'refs/heads/main'
    strategy:
      matrix:
        type: [windows-x64, windows-x86]
@@ -134,4 +157,3 @@ jobs:
        with:
          name: ${{ matrix.name }}
          path: ${{ matrix.path }}
-
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -8,11 +8,6 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
      - uses: actions-rs/cargo@v1
        with:
          command: check
@@ -22,26 +17,19 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+      - name: Install latest nextest release
+        uses: taiki-e/install-action@nextest
+      - name: Test with latest nextest release
+        uses: actions-rs/cargo@v1
        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - uses: actions-rs/cargo@v1
-        with:
-          command: test
+          command: nextest
+          args: run --all-features --all-targets --retries 10

  fmt:
    name: Rust fmt
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - run: rustup component add rustfmt
      - uses: actions-rs/cargo@v1
        with:
          command: fmt
@@ -52,13 +40,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - run: rustup component add clippy
      - uses: actions-rs/cargo@v1
        with:
          command: clippy
-          args: --all-targets --all-features -- -D warnings -A clippy::deref_addrof
+          args: --all-targets --all-features -- -D warnings
--- a/.github/workflows/cicd-to-dockerhub.yml
+++ b/.github/workflows/cicd-to-dockerhub.yml
@@ -0,0 +1,34 @@
+name: ci-to-dockerhub
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: true
+          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/feroxbuster:latest
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -3,34 +3,22 @@ on: [push]
 name: Code Coverage Pipeline

 jobs:
-  upload-coverage:
+  coverage:
+    name: LLVM Coverage
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v1
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
-          override: true
-      - uses: actions-rs/cargo@v1
-        with:
-          command: clean
-      - uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --all-features --no-fail-fast
-        env:
-          CARGO_INCREMENTAL: '0'
-          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort'
-          RUSTDOCFLAGS: '-Cpanic=abort'
-      - uses: actions-rs/grcov@v0.1
-      - name: Convert lcov to xml
-        run: |
-          curl -O https://raw.githubusercontent.com/eriwen/lcov-to-cobertura-xml/master/lcov_cobertura/lcov_cobertura.py
-          chmod +x lcov_cobertura.py
-          ./lcov_cobertura.py ./lcov.info
-      - uses: codecov/codecov-action@v1
+      - uses: actions/checkout@v2
+      - name: Install llvm-tools-preview
+        run: rustup toolchain install stable --component llvm-tools-preview
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+      - name: Install cargo-nextest
+        uses: taiki-e/install-action@nextest
+      - name: Generate code coverage
+        run: cargo llvm-cov  nextest  --all-features --no-fail-fast --lcov --output-path lcov.info -- --retries 10
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v1
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
-          file: ./coverage.xml
-          name: codecov-umbrella
+          files: lcov.info
          fail_ci_if_error: true
--- a/.gitignore
+++ b/.gitignore
@@ -3,16 +3,15 @@
 debug/
 target/

-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
 # These are backup files generated by rustfmt
 **/*.rs.bk

 # jetbrains metadata folder
 .idea/

+# vscode metadata folder
+.vscode/
+
 # personal feroxbuster config for testing
 ferox-config.toml

@@ -25,3 +24,9 @@ lcov_cobertura.py

 # dockerignore file that makes it so i can work on the docker config without copying a 4GB manifest or w/e it is
 .dockerignore
+
+# state file created during tests
+ferox-*.state
+
+# python stuff cuz reasons
+Pipfile*
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -166,7 +166,7 @@ primarily related to continuous integration and release deployment.

 feroxbuster uses the [`clippy`](https://rust-lang.github.io/rust-clippy/) code linter.

-The command that will ultimately be used in the CI pipeline for linting is `cargo clippy --all-targets --all-features -- -D warnings -A clippy::unnecessary_unwrap`.  
+The command that will ultimately be used in the CI pipeline for linting is `cargo clippy --all-targets --all-features -- -D warnings -A clippy::mutex-atomic`.

 Before submitting a Pull Request, the above command should be run. Please do not ignore any linting errors in code you write or modify, as they are meant to **help** by ensuring a clean and simple code base.

--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,14 +1,20 @@
 [package]
 name = "feroxbuster"
-version = "1.12.4"
-authors = ["Ben 'epi' Risher <epibar052@gmail.com>"]
+version = "2.7.3"
+authors = ["Ben 'epi' Risher (@epi052)"]
 license = "MIT"
-edition = "2018"
+edition = "2021"
 homepage = "https://github.com/epi052/feroxbuster"
 repository = "https://github.com/epi052/feroxbuster"
 description = "A fast, simple, recursive content discovery tool."
 categories = ["command-line-utilities"]
-keywords = ["pentest", "enumeration", "url-bruteforce", "content-discovery", "web"]
+keywords = [
+    "pentest",
+    "enumeration",
+    "url-bruteforce",
+    "content-discovery",
+    "web",
+]
 exclude = [".github/*", "img/*", "check-coverage.sh"]
 build = "build.rs"

@@ -16,38 +22,46 @@ build = "build.rs"
 maintenance = { status = "actively-developed" }

 [build-dependencies]
-clap = "2.33"
-regex = "1"
-lazy_static = "1.4"
+clap = { version = "4.0.8", features = ["wrap_help", "cargo"] }
+clap_complete = "4.0.2"
+regex = "1.5.5"
+lazy_static = "1.4.0"
+dirs = "4.0.0"

 [dependencies]
-futures = { version = "0.3"}
-tokio = { version = "1.0", features = ["full"] }
-tokio-util = {version = "0.6", features = ["codec"]}
-log = "0.4"
-env_logger = "0.8"
-reqwest = { version = "0.11", features = ["socks"] }
-clap = "2.33"
-lazy_static = "1.4"
-toml = "0.5"
-serde = { version = "1.0", features = ["derive", "rc"] }
-serde_json = "1.0"
-uuid = { version = "0.8", features = ["v4"] }
+scraper = "0.14.0"
+futures = "0.3.21"
+tokio = { version = "1.18.2", features = ["full"] }
+tokio-util = { version = "0.7.1", features = ["codec"] }
+log = "0.4.17"
+env_logger = "0.10.0"
+reqwest = { version = "0.11.10", features = ["socks"] }
+# uses feature unification to add 'serde' to reqwest::Url
+url = { version = "2.2.2", features = ["serde"] }
+serde_regex = "1.1.0"
+clap = { version = "4.0.8", features = ["wrap_help", "cargo"] }
+lazy_static = "1.4.0"
+toml = "0.5.9"
+serde = { version = "1.0.137", features = ["derive", "rc"] }
+serde_json = "1.0.81"
+uuid = { version = "1.0.0", features = ["v4"] }
 indicatif = "0.15"
-console = "0.14"
-openssl = { version = "0.10", features = ["vendored"] }
-dirs = "3.0"
-regex = "1"
-crossterm = "0.19"
-rlimit = "0.5"
-ctrlc = "3.1"
+console = "0.15.2"
+openssl = { version = "0.10.40", features = ["vendored"] }
+dirs = "4.0.0"
+regex = "1.5.5"
+crossterm = "0.25.0"
+rlimit = "0.9.0"
+ctrlc = "3.2.2"
 fuzzyhash = "0.2.1"
+anyhow = "1.0.57"
+leaky-bucket = "0.12.1"

 [dev-dependencies]
-tempfile = "3.1"
-httpmock = "0.5.2"
-assert_cmd = "1.0.1"
-predicates = "1.0.5"
+tempfile = "3.3.0"
+httpmock = "0.6.6"
+assert_cmd = "2.0.4"
+predicates = "2.1.1"

 [profile.release]
 lto = true
@@ -59,6 +73,29 @@ section = "utility"
 license-file = ["LICENSE", "4"]
 conf-files = ["/etc/feroxbuster/ferox-config.toml"]
 assets = [
-    ["target/release/feroxbuster", "/usr/bin/", "755"],
-    ["ferox-config.toml.example", "/etc/feroxbuster/ferox-config.toml", "644"],
+    [
+        "target/release/feroxbuster",
+        "/usr/bin/",
+        "755",
+    ],
+    [
+        "ferox-config.toml.example",
+        "/etc/feroxbuster/ferox-config.toml",
+        "644",
+    ],
+    [
+        "shell_completions/feroxbuster.bash",
+        "/usr/share/bash-completion/completions/feroxbuster.bash",
+        "644",
+    ],
+    [
+        "shell_completions/feroxbuster.fish",
+        "/usr/share/fish/completions/feroxbuster.fish",
+        "644",
+    ],
+    [
+        "shell_completions/_feroxbuster",
+        "/usr/share/zsh/vendor-completions/_feroxbuster",
+        "644",
+    ],
 ]
--- a/30
+++ b/30
@@ -1,14 +1,28 @@
-FROM alpine:latest
+# Image: alpine:3.14.2
+FROM alpine@sha256:69704ef328d05a9f806b6b8502915e6a0a4faa4d72018dc42343f511490daf8a as build
 LABEL maintainer="wfnintr@null.net"

-RUN sed -i -e 's/v[[:digit:]]\..*\//edge\//g' /etc/apk/repositories && apk upgrade --update-cache --available
+RUN sed -i -e 's/v[[:digit:]]\..*\//edge\//g' /etc/apk/repositories \
+    && apk upgrade --update-cache --available && apk add --update openssl

-# download default wordlists 
-RUN apk add --no-cache --virtual .depends subversion font-noto-emoji && \
-	svn export https://github.com/danielmiessler/SecLists/trunk/Discovery/Web-Content /usr/share/seclists/Discovery/Web-Content && \
-	apk del .depends

-# install latest release
-RUN wget https://github.com/epi052/feroxbuster/releases/latest/download/x86_64-linux-feroxbuster.zip -qO feroxbuster.zip && unzip -d /usr/local/bin/ feroxbuster.zip feroxbuster && rm feroxbuster.zip && chmod +x /usr/local/bin/feroxbuster
+# Download latest release
+RUN wget https://github.com/epi052/feroxbuster/releases/latest/download/x86_64-linux-feroxbuster.zip -qO feroxbuster.zip \
+    && unzip -d /tmp/ feroxbuster.zip feroxbuster \
+    && chmod +x /tmp/feroxbuster \
+    && wget https://raw.githubusercontent.com/danielmiessler/SecLists/master/Discovery/Web-Content/raft-medium-directories.txt -O /tmp/raft-medium-directories.txt
+
+# Image: alpine:3.14.2
+FROM alpine@sha256:69704ef328d05a9f806b6b8502915e6a0a4faa4d72018dc42343f511490daf8a as release
+
+COPY --from=build /tmp/raft-medium-directories.txt /usr/share/seclists/Discovery/Web-Content/raft-medium-directories.txt
+COPY --from=build /tmp/feroxbuster /usr/local/bin/feroxbuster
+
+RUN adduser \
+    --gecos "" \
+    --disabled-password \
+    feroxbuster
+
+USER feroxbuster

 ENTRYPOINT ["feroxbuster"]
--- a/79
+++ b/79
@@ -0,0 +1,79 @@
+default_prefix = /usr/local
+prefix ?= $(default_prefix)
+exec_prefix = $(prefix)
+bindir = $(exec_prefix)/bin
+datarootdir = $(prefix)/share
+datadir = $(datarootdir)
+example_config = ferox-config.toml.example
+config_file = ferox-config.toml
+completion_dir = shell_completions
+completion_prefix = $(completion_dir)/$(BIN)
+
+BIN=feroxbuster
+SHR_SOURCES = $(shell find src -type f -wholename '*src/*.rs') Cargo.toml Cargo.lock
+
+RELEASE = debug
+DEBUG ?= 0
+
+ifeq (0, $(DEBUG))
+	ARGS = --release
+	RELEASE = release
+endif
+
+VENDORED ?= 0
+ifeq (1,$(VENDORED))
+    ARGS += --frozen
+endif
+
+TARGET = target/$(RELEASE)
+
+.PHONY: all clean install uninstall test update
+
+all: cli
+cli: $(TARGET)/$(BIN) $(TARGET)/$(BIN).1.gz $(SHR_SOURCES)
+install: all install-cli
+
+verify:
+	cargo fmt
+	cargo clippy --all-targets --all-features -- -D warnings -A clippy::mutex-atomic
+	cargo test
+
+clean:
+	cargo clean
+
+vendor: vendor.tar
+
+vendor.tar:
+	cargo vendor
+	tar pcf vendor.tar vendor
+	rm -rf vendor
+
+install-cli: cli
+	install -Dm 0644 "$(completion_prefix).bash" "$(DESTDIR)/usr/share/bash-completion/completions/$(BIN).bash"
+	install -Dm 0644 "$(completion_prefix).fish" "$(DESTDIR)/usr/share/fish/completions/$(BIN).fish"
+	install -Dm 0644 "$(completion_dir)/_$(BIN)" "$(DESTDIR)/usr/share/zsh/vendor-completions/_$(BIN)"
+	install -sDm 0755 "$(TARGET)/$(BIN)" "$(DESTDIR)$(bindir)/$(BIN)"
+	install -Dm 0644 "$(TARGET)/$(BIN).1.gz" "$(DESTDIR)$(datadir)/man/man1/$(BIN).1.gz"
+	install -Dm 0644 "$(example_config)" "$(DESTDIR)/etc/$(BIN)/$(config_file)"
+
+uninstall:
+	rm -f "$(DESTDIR)$(bindir)/$(BIN)"
+	rm -f "$(DESTDIR)$(datadir)/man/man1/$(BIN).1.gz"
+	rm -rf "$(DESTDIR)/etc/$(BIN)/"
+	rm -f "$(DESTDIR)/usr/share/bash-completion/completions/$(BIN).bash"
+	rm -f "$(DESTDIR)/usr/share/zsh/vendor-completions/_$(BIN)"
+	rm -f "$(DESTDIR)/usr/share/fish/completions/$(BIN).fish"
+
+extract:
+ifeq (1, $(VENDORED))
+	tar pxf vendor.tar
+endif
+
+$(TARGET)/$(BIN): extract
+	mkdir -p .cargo
+	cp debian/cargo.config .cargo/config.toml
+	cargo build $(ARGS)
+
+$(TARGET)/$(BIN).1.gz: $(TARGET)/$(BIN)
+	help2man --no-info $< | gzip -c > $@.partial
+	mv $@.partial $@
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -0,0 +1,25 @@
+# composite tasks
+[tasks.upgrade]
+dependencies = ["upgrade-deps", "update"]
+
+# cleaning
+[tasks.clean-state]
+script = """
+rm ferox-*.state
+"""
+
+# dependency management
+[tasks.upgrade-deps]
+command = "cargo"
+args = ["upgrade", "--exclude", "indicatif"]
+
+[tasks.update]
+command = "cargo"
+args = ["update"]
+
+# clippy / lint
+[tasks.clippy]
+clear = true
+script = """
+cargo clippy --all-targets --all-features -- -D warnings
+"""
--- a/README.md
+++ b/README.md
--- a/build.rs
+++ b/build.rs
@@ -1,6 +1,7 @@
-extern crate clap;
+use std::fs::{copy, create_dir_all, OpenOptions};
+use std::io::{Read, Seek, SeekFrom, Write};

-use clap::Shell;
+use clap_complete::{generate_to, shells};

 include!("src/parser.rs");

@@ -15,9 +16,65 @@ fn main() {

    let mut app = initialize();

-    let shells: [Shell; 4] = [Shell::Bash, Shell::Fish, Shell::Zsh, Shell::PowerShell];
+    generate_to(shells::Bash, &mut app, "feroxbuster", outdir).unwrap();
+    generate_to(shells::Zsh, &mut app, "feroxbuster", outdir).unwrap();
+    generate_to(shells::Zsh, &mut app, "feroxbuster", outdir).unwrap();
+    generate_to(shells::PowerShell, &mut app, "feroxbuster", outdir).unwrap();
+    generate_to(shells::Elvish, &mut app, "feroxbuster", outdir).unwrap();

-    for shell in &shells {
-        app.gen_completions("feroxbuster", *shell, outdir);
+    // 0xdf pointed out an oddity when tab-completing options that expect file paths, the fix we
+    // landed on was to add -o plusdirs to the bash completion script. The following code aims to
+    // automate that fix and have it present in all future builds
+    let mut contents = String::new();
+
+    let mut bash_file = OpenOptions::new()
+        .read(true)
+        .write(true)
+        .open(format!("{}/feroxbuster.bash", outdir))
+        .expect("Couldn't open bash completion script");
+
+    bash_file
+        .read_to_string(&mut contents)
+        .expect("Couldn't read bash completion script");
+
+    contents = contents.replace("default feroxbuster", "default -o plusdirs feroxbuster");
+
+    bash_file
+        .seek(SeekFrom::Start(0))
+        .expect("Couldn't seek to position 0 in bash completion script");
+
+    bash_file
+        .write_all(contents.as_bytes())
+        .expect("Couldn't write updated bash completion script to disk");
+
+    // hunter0x8 let me know that when installing via cargo, it would be nice if we dropped a
+    // config file during the build process. The following code will place an example config in
+    // the user's configuration directory
+    //   - linux: $XDG_CONFIG_HOME or $HOME/.config
+    //   - macOS: $HOME/Library/Application Support
+    //   - windows: {FOLDERID_RoamingAppData}
+    let mut config_dir = dirs::config_dir().expect("Couldn't resolve user's config directory");
+    config_dir = config_dir.join("feroxbuster"); // $HOME/.config/feroxbuster
+
+    if !config_dir.exists() {
+        // recursively create the feroxbuster directory and all of its parent components if
+        // they are missing
+        if create_dir_all(&config_dir).is_err() {
+            // only copy the config file when we're not running in the CI/CD pipeline
+            // which fails with permission denied
+            eprintln!("Couldn't create one or more directories needed to copy the config file");
+            return;
+        }
+    }
+
+    // hard-coding config name here to not rely on the crate we're building, if DEFAULT_CONFIG_NAME
+    // ever changes, this will need to be updated
+    let config_file = config_dir.join("ferox-config.toml");
+
+    if !config_file.exists() {
+        // config file doesn't exist, add it to the config directory
+        if copy("ferox-config.toml.example", config_file).is_err() {
+            eprintln!("Couldn't copy example config into config directory");
+        }
    }
 }
--- a/docs/.nojekyll
+++ b/docs/.nojekyll
--- a/docs/index.html
+++ b/docs/index.html
@@ -0,0 +1,11 @@
+<html>
+<head>
+   <meta http-equiv="refresh"
+   content="0; url=https://epi052.github.io/feroxbuster-docs/">
+</head>
+<body>
+   <p>The page has moved to:
+   <a href="https://epi052.github.io/feroxbuster-docs/">feroxbuster-docs</a></p>
+</body>
+</html>
+
--- a/ferox-config.toml.example
+++ b/ferox-config.toml.example
@@ -16,21 +16,36 @@
 # replay_proxy = "http://127.0.0.1:8081"
 # replay_codes = [200, 302]
 # verbosity = 1
+# parallel = 8
 # scan_limit = 6
+# rate_limit = 250
 # quiet = true
+# silent = true
+# auto_tune = true
+# auto_bail = true
 # json = true
 # output = "/targets/ellingson_mineral_company/gibson.txt"
 # debug_log = "/var/log/find-the-derp.log"
 # user_agent = "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0"
+# random_agent = false
 # redirects = true
 # insecure = true
+# collect_words = true
+# collect_backups = true
+# collect_extensions = true
 # extensions = ["php", "html"]
+# dont_collect = ["png", "gif", "jpg", "jpeg"]
+# methods = ["GET", "POST"]
+# data = [11, 12, 13, 14, 15]
+# url_denylist = ["http://dont-scan.me", "https://also-not.me"]
+# regex_denylist = ["/deny.*"]
 # no_recursion = true
 # add_slash = true
 # stdin = true
 # dont_filter = true
 # extract_links = true
 # depth = 1
+# force_recursion = true
 # filter_size = [5174]
 # filter_regex = ["^ignore me$"]
 # filter_similar = ["https://somesite.com/soft404"]
--- a/img/auto-bail-demo.gif
+++ b/img/auto-bail-demo.gif
--- a/img/auto-tune-demo.gif
+++ b/img/auto-tune-demo.gif
--- a/img/cancel-menu.png
+++ b/img/cancel-menu.png
--- a/img/cancel-scan.gif
+++ b/img/cancel-scan.gif
--- a/img/rate-limit-demo.gif
+++ b/img/rate-limit-demo.gif
--- a/install-nix.sh
+++ b/install-nix.sh
@@ -3,59 +3,63 @@
 BASE_URL=https://github.com/epi052/feroxbuster/releases/latest/download

 MAC_ZIP=x86_64-macos-feroxbuster.zip
-MAC_URL="${BASE_URL}/${MAC_ZIP}"
+MAC_URL="$BASE_URL/$MAC_ZIP"

 LIN32_ZIP=x86-linux-feroxbuster.zip
-LIN32_URL="${BASE_URL}/${LIN32_ZIP}"
+LIN32_URL="$BASE_URL/$LIN32_ZIP"

 LIN64_ZIP=x86_64-linux-feroxbuster.zip
-LIN64_URL="${BASE_URL}/${LIN64_ZIP}"
+LIN64_URL="$BASE_URL/$LIN64_ZIP"

 EMOJI_URL=https://gist.github.com/epi052/8196b550ea51d0907ad4b93751b1b57d/raw/6112c9f32ae07922983fdc549c54fd3fb9a38e4c/NotoColorEmoji.ttf

 echo "[+] Installing feroxbuster!"

-if [[ "$(uname)" == "Darwin" ]]; then
-    echo "[=] Found MacOS, downloading from ${MAC_URL}"
-
-    curl -sLO "${MAC_URL}"
-    unzip -o "${MAC_ZIP}" > /dev/null
-    rm "${MAC_ZIP}"
-elif [[ "$(expr substr $(uname -s) 1 5)" == "Linux" ]]; then
-    if [[ $(getconf LONG_BIT) == 32 ]]; then
-        echo "[=] Found 32-bit Linux, downloading from ${LIN32_URL}"
-
-        curl -sLO "${LIN32_URL}"
-        unzip -o "${LIN32_ZIP}" > /dev/null
-        rm "${LIN32_ZIP}"
-    else
-        echo "[=] Found 64-bit Linux, downloading from ${LIN64_URL}"
-
-        curl -sLO "${LIN64_URL}"
-        unzip -o "${LIN64_ZIP}" > /dev/null
-        rm "${LIN64_ZIP}"
-    fi
-
-    if [[ -e ~/.fonts/NotoColorEmoji.ttf ]]; then
-       echo "[=] Found Noto Emoji Font, skipping install" 
-    else 
-        echo "[=] Installing Noto Emoji Font"
-        mkdir -p ~/.fonts
-        pushd ~/.fonts 2>&1 >/dev/null
-
-        curl -sLO "${EMOJI_URL}"
-
-        fc-cache -f -v >/dev/null
-
-        popd 2>&1 >/dev/null
-        echo "[+] Noto Emoji Font installed"
-    fi
+which unzip &>/dev/null
+if [ "$?" = "0" ]; then
+  echo "[+] unzip found"
+else
+  echo "[ ] unzip not found, exiting. "
+  exit -1
 fi

+if [[ "$(uname)" == "Darwin" ]]; then
+  echo "[=] Found MacOS, downloading from $MAC_URL"
+
+  curl -sLO "$MAC_URL"
+  unzip -o "$MAC_ZIP" >/dev/null
+  rm "$MAC_ZIP"
+elif [[ "$(expr substr $(uname -s) 1 5)" == "Linux" ]]; then
+  if [[ $(getconf LONG_BIT) == 32 ]]; then
+    echo "[=] Found 32-bit Linux, downloading from $LIN32_URL"
+
+    curl -sLO "$LIN32_URL"
+    unzip -o "$LIN32_ZIP" >/dev/null
+    rm "$LIN32_ZIP"
+  else
+    echo "[=] Found 64-bit Linux, downloading from $LIN64_URL"
+
+    curl -sLO "$LIN64_URL"
+    unzip -o "$LIN64_ZIP" >/dev/null
+    rm "$LIN64_ZIP"
+  fi
+
+  if [[ -e ~/.fonts/NotoColorEmoji.ttf ]]; then
+    echo "[=] Found Noto Emoji Font, skipping install"
+  else
+    echo "[=] Installing Noto Emoji Font"
+    mkdir -p ~/.fonts
+    pushd ~/.fonts 2>&1 >/dev/null
+
+    curl -sLO "$EMOJI_URL"
+
+    fc-cache -f -v >/dev/null
+
+    popd 2>&1 >/dev/null
+    echo "[+] Noto Emoji Font installed"
+  fi
+fi

 chmod +x ./feroxbuster

 echo "[+] Installed feroxbuster version $(./feroxbuster -V)"
-
-
-
--- a/shell_completions/_feroxbuster
+++ b/shell_completions/_feroxbuster
@@ -15,82 +15,106 @@ _feroxbuster() {

    local context curcontext="$curcontext" state line
    _arguments "${_arguments_options[@]}" \
-'-w+[Path to the wordlist]' \
-'--wordlist=[Path to the wordlist]' \
-'*-u+[The target URL(s) (required, unless --stdin used)]' \
-'*--url=[The target URL(s) (required, unless --stdin used)]' \
-'-t+[Number of concurrent threads (default: 50)]' \
-'--threads=[Number of concurrent threads (default: 50)]' \
-'-d+[Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)]' \
-'--depth=[Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)]' \
-'-T+[Number of seconds before a request times out (default: 7)]' \
-'--timeout=[Number of seconds before a request times out (default: 7)]' \
-'-p+[Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)]' \
-'--proxy=[Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)]' \
-'-P+[Send only unfiltered requests through a Replay Proxy, instead of all requests]' \
-'--replay-proxy=[Send only unfiltered requests through a Replay Proxy, instead of all requests]' \
-'*-R+[Status Codes to send through a Replay Proxy when found (default: --status-codes value)]' \
-'*--replay-codes=[Status Codes to send through a Replay Proxy when found (default: --status-codes value)]' \
-'*-s+[Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)]' \
-'*--status-codes=[Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)]' \
-'-o+[Output file to write results to (use w/ --json for JSON entries)]' \
-'--output=[Output file to write results to (use w/ --json for JSON entries)]' \
-'(-u --url)--resume-from=[State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)]' \
-'--debug-log=[Output file to write log entries (use w/ --json for JSON entries)]' \
-'-a+[Sets the User-Agent (default: feroxbuster/VERSION)]' \
-'--user-agent=[Sets the User-Agent (default: feroxbuster/VERSION)]' \
-'*-x+[File extension(s) to search for (ex: -x php -x pdf js)]' \
-'*--extensions=[File extension(s) to search for (ex: -x php -x pdf js)]' \
-'*-H+[Specify HTTP headers (ex: -H Header:val '\''stuff: things'\'')]' \
-'*--headers=[Specify HTTP headers (ex: -H Header:val '\''stuff: things'\'')]' \
-'*-Q+[Specify URL query parameters (ex: -Q token=stuff -Q secret=key)]' \
-'*--query=[Specify URL query parameters (ex: -Q token=stuff -Q secret=key)]' \
-'*-S+[Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)]' \
-'*--filter-size=[Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)]' \
-'*-X+[Filter out messages via regular expression matching on the response'\''s body (ex: -X '\''^ignore me$'\'')]' \
-'*--filter-regex=[Filter out messages via regular expression matching on the response'\''s body (ex: -X '\''^ignore me$'\'')]' \
-'*-W+[Filter out messages of a particular word count (ex: -W 312 -W 91,82)]' \
-'*--filter-words=[Filter out messages of a particular word count (ex: -W 312 -W 91,82)]' \
-'*-N+[Filter out messages of a particular line count (ex: -N 20 -N 31,30)]' \
-'*--filter-lines=[Filter out messages of a particular line count (ex: -N 20 -N 31,30)]' \
-'*-C+[Filter out status codes (deny list) (ex: -C 200 -C 401)]' \
-'*--filter-status=[Filter out status codes (deny list) (ex: -C 200 -C 401)]' \
-'*--filter-similar-to=[Filter out pages that are similar to the given page (ex. --filter-similar-to http://site.xyz/soft404)]' \
-'-L+[Limit total number of concurrent scans (default: 0, i.e. no limit)]' \
-'--scan-limit=[Limit total number of concurrent scans (default: 0, i.e. no limit)]' \
-'--time-limit=[Limit total run time of all scans (ex: --time-limit 10m)]' \
-'*-v[Increase verbosity level (use -vv or more for greater effect. \[CAUTION\] 4 -v'\''s is probably too much)]' \
-'*--verbosity[Increase verbosity level (use -vv or more for greater effect. \[CAUTION\] 4 -v'\''s is probably too much)]' \
-'-q[Only print URLs; Don'\''t print status codes, response size, running config, etc...]' \
-'--quiet[Only print URLs; Don'\''t print status codes, response size, running config, etc...]' \
-'--json[Emit JSON logs to --output and --debug-log instead of normal text]' \
-'-D[Don'\''t auto-filter wildcard responses]' \
-'--dont-filter[Don'\''t auto-filter wildcard responses]' \
-'-r[Follow redirects]' \
-'--redirects[Follow redirects]' \
-'-k[Disables TLS certificate validation]' \
-'--insecure[Disables TLS certificate validation]' \
+'-u+[The target URL (required, unless \[--stdin || --resume-from\] used)]:URL:_urls' \
+'--url=[The target URL (required, unless \[--stdin || --resume-from\] used)]:URL:_urls' \
+'(-u --url)--resume-from=[State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)]:STATE_FILE:_files' \
+'-p+[Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)]:PROXY:_urls' \
+'--proxy=[Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)]:PROXY:_urls' \
+'-P+[Send only unfiltered requests through a Replay Proxy, instead of all requests]:REPLAY_PROXY:_urls' \
+'--replay-proxy=[Send only unfiltered requests through a Replay Proxy, instead of all requests]:REPLAY_PROXY:_urls' \
+'*-R+[Status Codes to send through a Replay Proxy when found (default: --status-codes value)]:REPLAY_CODE: ' \
+'*--replay-codes=[Status Codes to send through a Replay Proxy when found (default: --status-codes value)]:REPLAY_CODE: ' \
+'-a+[Sets the User-Agent (default: feroxbuster/2.7.3)]:USER_AGENT: ' \
+'--user-agent=[Sets the User-Agent (default: feroxbuster/2.7.3)]:USER_AGENT: ' \
+'*-x+[File extension(s) to search for (ex: -x php -x pdf js)]:FILE_EXTENSION: ' \
+'*--extensions=[File extension(s) to search for (ex: -x php -x pdf js)]:FILE_EXTENSION: ' \
+'*-m+[Which HTTP request method(s) should be sent (default: GET)]:HTTP_METHODS: ' \
+'*--methods=[Which HTTP request method(s) should be sent (default: GET)]:HTTP_METHODS: ' \
+'--data=[Request'\''s Body; can read data from a file if input starts with an @ (ex: @post.bin)]:DATA: ' \
+'*-H+[Specify HTTP headers to be used in each request (ex: -H Header:val -H '\''stuff: things'\'')]:HEADER: ' \
+'*--headers=[Specify HTTP headers to be used in each request (ex: -H Header:val -H '\''stuff: things'\'')]:HEADER: ' \
+'*-b+[Specify HTTP cookies to be used in each request (ex: -b stuff=things)]:COOKIE: ' \
+'*--cookies=[Specify HTTP cookies to be used in each request (ex: -b stuff=things)]:COOKIE: ' \
+'*-Q+[Request'\''s URL query parameters (ex: -Q token=stuff -Q secret=key)]:QUERY: ' \
+'*--query=[Request'\''s URL query parameters (ex: -Q token=stuff -Q secret=key)]:QUERY: ' \
+'*--dont-scan=[URL(s) or Regex Pattern(s) to exclude from recursion/scans]:URL: ' \
+'*-S+[Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)]:SIZE: ' \
+'*--filter-size=[Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)]:SIZE: ' \
+'*-X+[Filter out messages via regular expression matching on the response'\''s body (ex: -X '\''^ignore me$'\'')]:REGEX: ' \
+'*--filter-regex=[Filter out messages via regular expression matching on the response'\''s body (ex: -X '\''^ignore me$'\'')]:REGEX: ' \
+'*-W+[Filter out messages of a particular word count (ex: -W 312 -W 91,82)]:WORDS: ' \
+'*--filter-words=[Filter out messages of a particular word count (ex: -W 312 -W 91,82)]:WORDS: ' \
+'*-N+[Filter out messages of a particular line count (ex: -N 20 -N 31,30)]:LINES: ' \
+'*--filter-lines=[Filter out messages of a particular line count (ex: -N 20 -N 31,30)]:LINES: ' \
+'(-s --status-codes)*-C+[Filter out status codes (deny list) (ex: -C 200 -C 401)]:STATUS_CODE: ' \
+'(-s --status-codes)*--filter-status=[Filter out status codes (deny list) (ex: -C 200 -C 401)]:STATUS_CODE: ' \
+'*--filter-similar-to=[Filter out pages that are similar to the given page (ex. --filter-similar-to http://site.xyz/soft404)]:UNWANTED_PAGE:_urls' \
+'*-s+[Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)]:STATUS_CODE: ' \
+'*--status-codes=[Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)]:STATUS_CODE: ' \
+'-T+[Number of seconds before a client'\''s request times out (default: 7)]:SECONDS: ' \
+'--timeout=[Number of seconds before a client'\''s request times out (default: 7)]:SECONDS: ' \
+'-t+[Number of concurrent threads (default: 50)]:THREADS: ' \
+'--threads=[Number of concurrent threads (default: 50)]:THREADS: ' \
+'-d+[Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)]:RECURSION_DEPTH: ' \
+'--depth=[Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)]:RECURSION_DEPTH: ' \
+'-L+[Limit total number of concurrent scans (default: 0, i.e. no limit)]:SCAN_LIMIT: ' \
+'--scan-limit=[Limit total number of concurrent scans (default: 0, i.e. no limit)]:SCAN_LIMIT: ' \
+'--parallel=[Run parallel feroxbuster instances (one child process per url passed via stdin)]:PARALLEL_SCANS: ' \
+'(--auto-tune)--rate-limit=[Limit number of requests per second (per directory) (default: 0, i.e. no limit)]:RATE_LIMIT: ' \
+'--time-limit=[Limit total run time of all scans (ex: --time-limit 10m)]:TIME_SPEC: ' \
+'-w+[Path to the wordlist]:FILE:_files' \
+'--wordlist=[Path to the wordlist]:FILE:_files' \
+'*-I+[File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)]:FILE_EXTENSION: ' \
+'*--dont-collect=[File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)]:FILE_EXTENSION: ' \
+'-o+[Output file to write results to (use w/ --json for JSON entries)]:FILE:_files' \
+'--output=[Output file to write results to (use w/ --json for JSON entries)]:FILE:_files' \
+'--debug-log=[Output file to write log entries (use w/ --json for JSON entries)]:FILE:_files' \
+'(-u --url)--stdin[Read url(s) from STDIN]' \
+'(-p --proxy -k --insecure --burp-replay)--burp[Set --proxy to http://127.0.0.1:8080 and set --insecure to true]' \
+'(-P --replay-proxy -k --insecure)--burp-replay[Set --replay-proxy to http://127.0.0.1:8080 and set --insecure to true]' \
+'--smart[Set --extract-links, --auto-tune, --collect-words, and --collect-backups to true]' \
+'--thorough[Use the same settings as --smart and set --collect-extensions to true]' \
+'-A[Use a random User-Agent]' \
+'--random-agent[Use a random User-Agent]' \
+'-f[Append / to each request'\''s URL]' \
+'--add-slash[Append / to each request'\''s URL]' \
+'-r[Allow client to follow redirects]' \
+'--redirects[Allow client to follow redirects]' \
+'-k[Disables TLS certificate validation in the client]' \
+'--insecure[Disables TLS certificate validation in the client]' \
 '-n[Do not scan recursively]' \
 '--no-recursion[Do not scan recursively]' \
-'(-x --extensions)-f[Append / to each request]' \
-'(-x --extensions)--add-slash[Append / to each request]' \
-'(-u --url)--stdin[Read url(s) from STDIN]' \
-'-e[Extract links from response body (html, javascript, etc...); make new requests based on findings (default: false)]' \
-'--extract-links[Extract links from response body (html, javascript, etc...); make new requests based on findings (default: false)]' \
-'-h[Prints help information]' \
-'--help[Prints help information]' \
-'-V[Prints version information]' \
-'--version[Prints version information]' \
+'(-n --no-recursion)--force-recursion[Force recursion attempts on all '\''found'\'' endpoints (still respects recursion depth)]' \
+'-e[Extract links from response body (html, javascript, etc...); make new requests based on findings]' \
+'--extract-links[Extract links from response body (html, javascript, etc...); make new requests based on findings]' \
+'(--auto-bail)--auto-tune[Automatically lower scan rate when an excessive amount of errors are encountered]' \
+'--auto-bail[Automatically stop scanning when an excessive amount of errors are encountered]' \
+'-D[Don'\''t auto-filter wildcard responses]' \
+'--dont-filter[Don'\''t auto-filter wildcard responses]' \
+'-E[Automatically discover extensions and add them to --extensions (unless they'\''re in --dont-collect)]' \
+'--collect-extensions[Automatically discover extensions and add them to --extensions (unless they'\''re in --dont-collect)]' \
+'-B[Automatically request likely backup extensions for "found" urls]' \
+'--collect-backups[Automatically request likely backup extensions for "found" urls]' \
+'-g[Automatically discover important words from within responses and add them to the wordlist]' \
+'--collect-words[Automatically discover important words from within responses and add them to the wordlist]' \
+'(--silent)*-v[Increase verbosity level (use -vv or more for greater effect. \[CAUTION\] 4 -v'\''s is probably too much)]' \
+'(--silent)*--verbosity[Increase verbosity level (use -vv or more for greater effect. \[CAUTION\] 4 -v'\''s is probably too much)]' \
+'(-q --quiet)--silent[Only print URLs + turn off logging (good for piping a list of urls to other commands)]' \
+'-q[Hide progress bars and banner (good for tmux windows w/ notifications)]' \
+'--quiet[Hide progress bars and banner (good for tmux windows w/ notifications)]' \
+'--json[Emit JSON logs to --output and --debug-log instead of normal text]' \
+'--no-state[Disable state output file (*.state)]' \
+'-h[Print help information (use `--help` for more detail)]' \
+'--help[Print help information (use `--help` for more detail)]' \
+'-V[Print version information]' \
+'--version[Print version information]' \
 && ret=0
-    
 }

 (( $+functions[_feroxbuster_commands] )) ||
 _feroxbuster_commands() {
-    local commands; commands=(
-        
-    )
+    local commands; commands=()
    _describe -t commands 'feroxbuster commands' commands "$@"
 }

-_feroxbuster "$@"
+_feroxbuster "$@"
--- a/shell_completions/_feroxbuster.ps1
+++ b/shell_completions/_feroxbuster.ps1
@@ -12,7 +12,8 @@ Register-ArgumentCompleter -Native -CommandName 'feroxbuster' -ScriptBlock {
            $element = $commandElements[$i]
            if ($element -isnot [StringConstantExpressionAst] -or
                $element.StringConstantType -ne [StringConstantType]::BareWord -or
-                $element.Value.StartsWith('-')) {
+                $element.Value.StartsWith('-') -or
+                $element.Value -eq $wordToComplete) {
                break
        }
        $element.Value
@@ -20,36 +21,29 @@ Register-ArgumentCompleter -Native -CommandName 'feroxbuster' -ScriptBlock {

    $completions = @(switch ($command) {
        'feroxbuster' {
-            [CompletionResult]::new('-w', 'w', [CompletionResultType]::ParameterName, 'Path to the wordlist')
-            [CompletionResult]::new('--wordlist', 'wordlist', [CompletionResultType]::ParameterName, 'Path to the wordlist')
-            [CompletionResult]::new('-u', 'u', [CompletionResultType]::ParameterName, 'The target URL(s) (required, unless --stdin used)')
-            [CompletionResult]::new('--url', 'url', [CompletionResultType]::ParameterName, 'The target URL(s) (required, unless --stdin used)')
-            [CompletionResult]::new('-t', 't', [CompletionResultType]::ParameterName, 'Number of concurrent threads (default: 50)')
-            [CompletionResult]::new('--threads', 'threads', [CompletionResultType]::ParameterName, 'Number of concurrent threads (default: 50)')
-            [CompletionResult]::new('-d', 'd', [CompletionResultType]::ParameterName, 'Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)')
-            [CompletionResult]::new('--depth', 'depth', [CompletionResultType]::ParameterName, 'Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)')
-            [CompletionResult]::new('-T', 'T', [CompletionResultType]::ParameterName, 'Number of seconds before a request times out (default: 7)')
-            [CompletionResult]::new('--timeout', 'timeout', [CompletionResultType]::ParameterName, 'Number of seconds before a request times out (default: 7)')
+            [CompletionResult]::new('-u', 'u', [CompletionResultType]::ParameterName, 'The target URL (required, unless [--stdin || --resume-from] used)')
+            [CompletionResult]::new('--url', 'url', [CompletionResultType]::ParameterName, 'The target URL (required, unless [--stdin || --resume-from] used)')
+            [CompletionResult]::new('--resume-from', 'resume-from', [CompletionResultType]::ParameterName, 'State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)')
            [CompletionResult]::new('-p', 'p', [CompletionResultType]::ParameterName, 'Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)')
            [CompletionResult]::new('--proxy', 'proxy', [CompletionResultType]::ParameterName, 'Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)')
            [CompletionResult]::new('-P', 'P', [CompletionResultType]::ParameterName, 'Send only unfiltered requests through a Replay Proxy, instead of all requests')
            [CompletionResult]::new('--replay-proxy', 'replay-proxy', [CompletionResultType]::ParameterName, 'Send only unfiltered requests through a Replay Proxy, instead of all requests')
            [CompletionResult]::new('-R', 'R', [CompletionResultType]::ParameterName, 'Status Codes to send through a Replay Proxy when found (default: --status-codes value)')
            [CompletionResult]::new('--replay-codes', 'replay-codes', [CompletionResultType]::ParameterName, 'Status Codes to send through a Replay Proxy when found (default: --status-codes value)')
-            [CompletionResult]::new('-s', 's', [CompletionResultType]::ParameterName, 'Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)')
-            [CompletionResult]::new('--status-codes', 'status-codes', [CompletionResultType]::ParameterName, 'Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)')
-            [CompletionResult]::new('-o', 'o', [CompletionResultType]::ParameterName, 'Output file to write results to (use w/ --json for JSON entries)')
-            [CompletionResult]::new('--output', 'output', [CompletionResultType]::ParameterName, 'Output file to write results to (use w/ --json for JSON entries)')
-            [CompletionResult]::new('--resume-from', 'resume-from', [CompletionResultType]::ParameterName, 'State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)')
-            [CompletionResult]::new('--debug-log', 'debug-log', [CompletionResultType]::ParameterName, 'Output file to write log entries (use w/ --json for JSON entries)')
-            [CompletionResult]::new('-a', 'a', [CompletionResultType]::ParameterName, 'Sets the User-Agent (default: feroxbuster/VERSION)')
-            [CompletionResult]::new('--user-agent', 'user-agent', [CompletionResultType]::ParameterName, 'Sets the User-Agent (default: feroxbuster/VERSION)')
+            [CompletionResult]::new('-a', 'a', [CompletionResultType]::ParameterName, 'Sets the User-Agent (default: feroxbuster/2.7.3)')
+            [CompletionResult]::new('--user-agent', 'user-agent', [CompletionResultType]::ParameterName, 'Sets the User-Agent (default: feroxbuster/2.7.3)')
            [CompletionResult]::new('-x', 'x', [CompletionResultType]::ParameterName, 'File extension(s) to search for (ex: -x php -x pdf js)')
            [CompletionResult]::new('--extensions', 'extensions', [CompletionResultType]::ParameterName, 'File extension(s) to search for (ex: -x php -x pdf js)')
-            [CompletionResult]::new('-H', 'H', [CompletionResultType]::ParameterName, 'Specify HTTP headers (ex: -H Header:val ''stuff: things'')')
-            [CompletionResult]::new('--headers', 'headers', [CompletionResultType]::ParameterName, 'Specify HTTP headers (ex: -H Header:val ''stuff: things'')')
-            [CompletionResult]::new('-Q', 'Q', [CompletionResultType]::ParameterName, 'Specify URL query parameters (ex: -Q token=stuff -Q secret=key)')
-            [CompletionResult]::new('--query', 'query', [CompletionResultType]::ParameterName, 'Specify URL query parameters (ex: -Q token=stuff -Q secret=key)')
+            [CompletionResult]::new('-m', 'm', [CompletionResultType]::ParameterName, 'Which HTTP request method(s) should be sent (default: GET)')
+            [CompletionResult]::new('--methods', 'methods', [CompletionResultType]::ParameterName, 'Which HTTP request method(s) should be sent (default: GET)')
+            [CompletionResult]::new('--data', 'data', [CompletionResultType]::ParameterName, 'Request''s Body; can read data from a file if input starts with an @ (ex: @post.bin)')
+            [CompletionResult]::new('-H', 'H', [CompletionResultType]::ParameterName, 'Specify HTTP headers to be used in each request (ex: -H Header:val -H ''stuff: things'')')
+            [CompletionResult]::new('--headers', 'headers', [CompletionResultType]::ParameterName, 'Specify HTTP headers to be used in each request (ex: -H Header:val -H ''stuff: things'')')
+            [CompletionResult]::new('-b', 'b', [CompletionResultType]::ParameterName, 'Specify HTTP cookies to be used in each request (ex: -b stuff=things)')
+            [CompletionResult]::new('--cookies', 'cookies', [CompletionResultType]::ParameterName, 'Specify HTTP cookies to be used in each request (ex: -b stuff=things)')
+            [CompletionResult]::new('-Q', 'Q', [CompletionResultType]::ParameterName, 'Request''s URL query parameters (ex: -Q token=stuff -Q secret=key)')
+            [CompletionResult]::new('--query', 'query', [CompletionResultType]::ParameterName, 'Request''s URL query parameters (ex: -Q token=stuff -Q secret=key)')
+            [CompletionResult]::new('--dont-scan', 'dont-scan', [CompletionResultType]::ParameterName, 'URL(s) or Regex Pattern(s) to exclude from recursion/scans')
            [CompletionResult]::new('-S', 'S', [CompletionResultType]::ParameterName, 'Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)')
            [CompletionResult]::new('--filter-size', 'filter-size', [CompletionResultType]::ParameterName, 'Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)')
            [CompletionResult]::new('-X', 'X', [CompletionResultType]::ParameterName, 'Filter out messages via regular expression matching on the response''s body (ex: -X ''^ignore me$'')')
@@ -61,31 +55,65 @@ Register-ArgumentCompleter -Native -CommandName 'feroxbuster' -ScriptBlock {
            [CompletionResult]::new('-C', 'C', [CompletionResultType]::ParameterName, 'Filter out status codes (deny list) (ex: -C 200 -C 401)')
            [CompletionResult]::new('--filter-status', 'filter-status', [CompletionResultType]::ParameterName, 'Filter out status codes (deny list) (ex: -C 200 -C 401)')
            [CompletionResult]::new('--filter-similar-to', 'filter-similar-to', [CompletionResultType]::ParameterName, 'Filter out pages that are similar to the given page (ex. --filter-similar-to http://site.xyz/soft404)')
+            [CompletionResult]::new('-s', 's', [CompletionResultType]::ParameterName, 'Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)')
+            [CompletionResult]::new('--status-codes', 'status-codes', [CompletionResultType]::ParameterName, 'Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)')
+            [CompletionResult]::new('-T', 'T', [CompletionResultType]::ParameterName, 'Number of seconds before a client''s request times out (default: 7)')
+            [CompletionResult]::new('--timeout', 'timeout', [CompletionResultType]::ParameterName, 'Number of seconds before a client''s request times out (default: 7)')
+            [CompletionResult]::new('-t', 't', [CompletionResultType]::ParameterName, 'Number of concurrent threads (default: 50)')
+            [CompletionResult]::new('--threads', 'threads', [CompletionResultType]::ParameterName, 'Number of concurrent threads (default: 50)')
+            [CompletionResult]::new('-d', 'd', [CompletionResultType]::ParameterName, 'Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)')
+            [CompletionResult]::new('--depth', 'depth', [CompletionResultType]::ParameterName, 'Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)')
            [CompletionResult]::new('-L', 'L', [CompletionResultType]::ParameterName, 'Limit total number of concurrent scans (default: 0, i.e. no limit)')
            [CompletionResult]::new('--scan-limit', 'scan-limit', [CompletionResultType]::ParameterName, 'Limit total number of concurrent scans (default: 0, i.e. no limit)')
+            [CompletionResult]::new('--parallel', 'parallel', [CompletionResultType]::ParameterName, 'Run parallel feroxbuster instances (one child process per url passed via stdin)')
+            [CompletionResult]::new('--rate-limit', 'rate-limit', [CompletionResultType]::ParameterName, 'Limit number of requests per second (per directory) (default: 0, i.e. no limit)')
            [CompletionResult]::new('--time-limit', 'time-limit', [CompletionResultType]::ParameterName, 'Limit total run time of all scans (ex: --time-limit 10m)')
-            [CompletionResult]::new('-v', 'v', [CompletionResultType]::ParameterName, 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v''s is probably too much)')
-            [CompletionResult]::new('--verbosity', 'verbosity', [CompletionResultType]::ParameterName, 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v''s is probably too much)')
-            [CompletionResult]::new('-q', 'q', [CompletionResultType]::ParameterName, 'Only print URLs; Don''t print status codes, response size, running config, etc...')
-            [CompletionResult]::new('--quiet', 'quiet', [CompletionResultType]::ParameterName, 'Only print URLs; Don''t print status codes, response size, running config, etc...')
-            [CompletionResult]::new('--json', 'json', [CompletionResultType]::ParameterName, 'Emit JSON logs to --output and --debug-log instead of normal text')
-            [CompletionResult]::new('-D', 'D', [CompletionResultType]::ParameterName, 'Don''t auto-filter wildcard responses')
-            [CompletionResult]::new('--dont-filter', 'dont-filter', [CompletionResultType]::ParameterName, 'Don''t auto-filter wildcard responses')
-            [CompletionResult]::new('-r', 'r', [CompletionResultType]::ParameterName, 'Follow redirects')
-            [CompletionResult]::new('--redirects', 'redirects', [CompletionResultType]::ParameterName, 'Follow redirects')
-            [CompletionResult]::new('-k', 'k', [CompletionResultType]::ParameterName, 'Disables TLS certificate validation')
-            [CompletionResult]::new('--insecure', 'insecure', [CompletionResultType]::ParameterName, 'Disables TLS certificate validation')
+            [CompletionResult]::new('-w', 'w', [CompletionResultType]::ParameterName, 'Path to the wordlist')
+            [CompletionResult]::new('--wordlist', 'wordlist', [CompletionResultType]::ParameterName, 'Path to the wordlist')
+            [CompletionResult]::new('-I', 'I', [CompletionResultType]::ParameterName, 'File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)')
+            [CompletionResult]::new('--dont-collect', 'dont-collect', [CompletionResultType]::ParameterName, 'File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)')
+            [CompletionResult]::new('-o', 'o', [CompletionResultType]::ParameterName, 'Output file to write results to (use w/ --json for JSON entries)')
+            [CompletionResult]::new('--output', 'output', [CompletionResultType]::ParameterName, 'Output file to write results to (use w/ --json for JSON entries)')
+            [CompletionResult]::new('--debug-log', 'debug-log', [CompletionResultType]::ParameterName, 'Output file to write log entries (use w/ --json for JSON entries)')
+            [CompletionResult]::new('--stdin', 'stdin', [CompletionResultType]::ParameterName, 'Read url(s) from STDIN')
+            [CompletionResult]::new('--burp', 'burp', [CompletionResultType]::ParameterName, 'Set --proxy to http://127.0.0.1:8080 and set --insecure to true')
+            [CompletionResult]::new('--burp-replay', 'burp-replay', [CompletionResultType]::ParameterName, 'Set --replay-proxy to http://127.0.0.1:8080 and set --insecure to true')
+            [CompletionResult]::new('--smart', 'smart', [CompletionResultType]::ParameterName, 'Set --extract-links, --auto-tune, --collect-words, and --collect-backups to true')
+            [CompletionResult]::new('--thorough', 'thorough', [CompletionResultType]::ParameterName, 'Use the same settings as --smart and set --collect-extensions to true')
+            [CompletionResult]::new('-A', 'A', [CompletionResultType]::ParameterName, 'Use a random User-Agent')
+            [CompletionResult]::new('--random-agent', 'random-agent', [CompletionResultType]::ParameterName, 'Use a random User-Agent')
+            [CompletionResult]::new('-f', 'f', [CompletionResultType]::ParameterName, 'Append / to each request''s URL')
+            [CompletionResult]::new('--add-slash', 'add-slash', [CompletionResultType]::ParameterName, 'Append / to each request''s URL')
+            [CompletionResult]::new('-r', 'r', [CompletionResultType]::ParameterName, 'Allow client to follow redirects')
+            [CompletionResult]::new('--redirects', 'redirects', [CompletionResultType]::ParameterName, 'Allow client to follow redirects')
+            [CompletionResult]::new('-k', 'k', [CompletionResultType]::ParameterName, 'Disables TLS certificate validation in the client')
+            [CompletionResult]::new('--insecure', 'insecure', [CompletionResultType]::ParameterName, 'Disables TLS certificate validation in the client')
            [CompletionResult]::new('-n', 'n', [CompletionResultType]::ParameterName, 'Do not scan recursively')
            [CompletionResult]::new('--no-recursion', 'no-recursion', [CompletionResultType]::ParameterName, 'Do not scan recursively')
-            [CompletionResult]::new('-f', 'f', [CompletionResultType]::ParameterName, 'Append / to each request')
-            [CompletionResult]::new('--add-slash', 'add-slash', [CompletionResultType]::ParameterName, 'Append / to each request')
-            [CompletionResult]::new('--stdin', 'stdin', [CompletionResultType]::ParameterName, 'Read url(s) from STDIN')
-            [CompletionResult]::new('-e', 'e', [CompletionResultType]::ParameterName, 'Extract links from response body (html, javascript, etc...); make new requests based on findings (default: false)')
-            [CompletionResult]::new('--extract-links', 'extract-links', [CompletionResultType]::ParameterName, 'Extract links from response body (html, javascript, etc...); make new requests based on findings (default: false)')
-            [CompletionResult]::new('-h', 'h', [CompletionResultType]::ParameterName, 'Prints help information')
-            [CompletionResult]::new('--help', 'help', [CompletionResultType]::ParameterName, 'Prints help information')
-            [CompletionResult]::new('-V', 'V', [CompletionResultType]::ParameterName, 'Prints version information')
-            [CompletionResult]::new('--version', 'version', [CompletionResultType]::ParameterName, 'Prints version information')
+            [CompletionResult]::new('--force-recursion', 'force-recursion', [CompletionResultType]::ParameterName, 'Force recursion attempts on all ''found'' endpoints (still respects recursion depth)')
+            [CompletionResult]::new('-e', 'e', [CompletionResultType]::ParameterName, 'Extract links from response body (html, javascript, etc...); make new requests based on findings')
+            [CompletionResult]::new('--extract-links', 'extract-links', [CompletionResultType]::ParameterName, 'Extract links from response body (html, javascript, etc...); make new requests based on findings')
+            [CompletionResult]::new('--auto-tune', 'auto-tune', [CompletionResultType]::ParameterName, 'Automatically lower scan rate when an excessive amount of errors are encountered')
+            [CompletionResult]::new('--auto-bail', 'auto-bail', [CompletionResultType]::ParameterName, 'Automatically stop scanning when an excessive amount of errors are encountered')
+            [CompletionResult]::new('-D', 'D', [CompletionResultType]::ParameterName, 'Don''t auto-filter wildcard responses')
+            [CompletionResult]::new('--dont-filter', 'dont-filter', [CompletionResultType]::ParameterName, 'Don''t auto-filter wildcard responses')
+            [CompletionResult]::new('-E', 'E', [CompletionResultType]::ParameterName, 'Automatically discover extensions and add them to --extensions (unless they''re in --dont-collect)')
+            [CompletionResult]::new('--collect-extensions', 'collect-extensions', [CompletionResultType]::ParameterName, 'Automatically discover extensions and add them to --extensions (unless they''re in --dont-collect)')
+            [CompletionResult]::new('-B', 'B', [CompletionResultType]::ParameterName, 'Automatically request likely backup extensions for "found" urls')
+            [CompletionResult]::new('--collect-backups', 'collect-backups', [CompletionResultType]::ParameterName, 'Automatically request likely backup extensions for "found" urls')
+            [CompletionResult]::new('-g', 'g', [CompletionResultType]::ParameterName, 'Automatically discover important words from within responses and add them to the wordlist')
+            [CompletionResult]::new('--collect-words', 'collect-words', [CompletionResultType]::ParameterName, 'Automatically discover important words from within responses and add them to the wordlist')
+            [CompletionResult]::new('-v', 'v', [CompletionResultType]::ParameterName, 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v''s is probably too much)')
+            [CompletionResult]::new('--verbosity', 'verbosity', [CompletionResultType]::ParameterName, 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v''s is probably too much)')
+            [CompletionResult]::new('--silent', 'silent', [CompletionResultType]::ParameterName, 'Only print URLs + turn off logging (good for piping a list of urls to other commands)')
+            [CompletionResult]::new('-q', 'q', [CompletionResultType]::ParameterName, 'Hide progress bars and banner (good for tmux windows w/ notifications)')
+            [CompletionResult]::new('--quiet', 'quiet', [CompletionResultType]::ParameterName, 'Hide progress bars and banner (good for tmux windows w/ notifications)')
+            [CompletionResult]::new('--json', 'json', [CompletionResultType]::ParameterName, 'Emit JSON logs to --output and --debug-log instead of normal text')
+            [CompletionResult]::new('--no-state', 'no-state', [CompletionResultType]::ParameterName, 'Disable state output file (*.state)')
+            [CompletionResult]::new('-h', 'h', [CompletionResultType]::ParameterName, 'Print help information (use `--help` for more detail)')
+            [CompletionResult]::new('--help', 'help', [CompletionResultType]::ParameterName, 'Print help information (use `--help` for more detail)')
+            [CompletionResult]::new('-V', 'V', [CompletionResultType]::ParameterName, 'Print version information')
+            [CompletionResult]::new('--version', 'version', [CompletionResultType]::ParameterName, 'Print version information')
            break
        }
    })
--- a/shell_completions/feroxbuster.bash
+++ b/shell_completions/feroxbuster.bash
@@ -8,11 +8,10 @@ _feroxbuster() {

    for i in ${COMP_WORDS[@]}
    do
-        case "${i}" in
-            feroxbuster)
+        case "${cmd},${i}" in
+            ",$1")
                cmd="feroxbuster"
                ;;
-            
            *)
                ;;
        esac
@@ -20,90 +19,17 @@ _feroxbuster() {

    case "${cmd}" in
        feroxbuster)
-            opts=" -v -q -D -r -k -n -f -e -h -V -w -u -t -d -T -p -P -R -s -o -a -x -H -Q -S -X -W -N -C -L  --verbosity --quiet --json --dont-filter --redirects --insecure --no-recursion --add-slash --stdin --extract-links --help --version --wordlist --url --threads --depth --timeout --proxy --replay-proxy --replay-codes --status-codes --output --resume-from --debug-log --user-agent --extensions --headers --query --filter-size --filter-regex --filter-words --filter-lines --filter-status --filter-similar-to --scan-limit --time-limit  "
+            opts="-u -p -P -R -a -A -x -m -H -b -Q -f -S -X -W -N -C -s -T -r -k -t -n -d -e -L -w -D -E -B -g -I -v -q -o -h -V --url --stdin --resume-from --burp --burp-replay --smart --thorough --proxy --replay-proxy --replay-codes --user-agent --random-agent --extensions --methods --data --headers --cookies --query --add-slash --dont-scan --filter-size --filter-regex --filter-words --filter-lines --filter-status --filter-similar-to --status-codes --timeout --redirects --insecure --threads --no-recursion --depth --force-recursion --extract-links --scan-limit --parallel --rate-limit --time-limit --wordlist --auto-tune --auto-bail --dont-filter --collect-extensions --collect-backups --collect-words --dont-collect --verbosity --silent --quiet --json --output --debug-log --no-state --help --version"
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
-                
-                --wordlist)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -w)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
                --url)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -u)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --threads)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -t)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --depth)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -d)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --timeout)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -T)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --proxy)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -p)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --replay-proxy)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -P)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --replay-codes)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -R)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --status-codes)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -s)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                --output)
-                    COMPREPLY=($(compgen -f "${cur}"))
-                    return 0
-                    ;;
-                    -o)
+                -u)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -111,7 +37,27 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                --debug-log)
+                --proxy)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -p)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --replay-proxy)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -P)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --replay-codes)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -R)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -119,7 +65,7 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -a)
+                -a)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -127,7 +73,19 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -x)
+                -x)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --methods)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -m)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --data)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -135,7 +93,15 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -H)
+                -H)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --cookies)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -b)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -143,7 +109,11 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -Q)
+                -Q)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --dont-scan)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -151,7 +121,7 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -S)
+                -S)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -159,7 +129,7 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -X)
+                -X)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -167,7 +137,7 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -W)
+                -W)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -175,7 +145,7 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -N)
+                -N)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -183,7 +153,7 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -C)
+                -C)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -191,11 +161,51 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
+                --status-codes)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -s)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --timeout)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -T)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --threads)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -t)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --depth)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -d)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
                --scan-limit)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
-                    -L)
+                -L)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --parallel)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --rate-limit)
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
@@ -203,6 +213,34 @@ _feroxbuster() {
                    COMPREPLY=($(compgen -f "${cur}"))
                    return 0
                    ;;
+                --wordlist)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -w)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --dont-collect)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -I)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --output)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                -o)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
+                --debug-log)
+                    COMPREPLY=($(compgen -f "${cur}"))
+                    return 0
+                    ;;
                *)
                    COMPREPLY=()
                    ;;
@@ -210,8 +248,7 @@ _feroxbuster() {
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
-        
    esac
 }

-complete -F _feroxbuster -o bashdefault -o default feroxbuster
+complete -F _feroxbuster -o bashdefault -o default -o plusdirs feroxbuster
--- a/shell_completions/feroxbuster.elv
+++ b/shell_completions/feroxbuster.elv
@@ -0,0 +1,117 @@
+
+use builtin;
+use str;
+
+set edit:completion:arg-completer[feroxbuster] = {|@words|
+    fn spaces {|n|
+        builtin:repeat $n ' ' | str:join ''
+    }
+    fn cand {|text desc|
+        edit:complex-candidate $text &display=$text' '(spaces (- 14 (wcswidth $text)))$desc
+    }
+    var command = 'feroxbuster'
+    for word $words[1..-1] {
+        if (str:has-prefix $word '-') {
+            break
+        }
+        set command = $command';'$word
+    }
+    var completions = [
+        &'feroxbuster'= {
+            cand -u 'The target URL (required, unless [--stdin || --resume-from] used)'
+            cand --url 'The target URL (required, unless [--stdin || --resume-from] used)'
+            cand --resume-from 'State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)'
+            cand -p 'Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)'
+            cand --proxy 'Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)'
+            cand -P 'Send only unfiltered requests through a Replay Proxy, instead of all requests'
+            cand --replay-proxy 'Send only unfiltered requests through a Replay Proxy, instead of all requests'
+            cand -R 'Status Codes to send through a Replay Proxy when found (default: --status-codes value)'
+            cand --replay-codes 'Status Codes to send through a Replay Proxy when found (default: --status-codes value)'
+            cand -a 'Sets the User-Agent (default: feroxbuster/2.7.3)'
+            cand --user-agent 'Sets the User-Agent (default: feroxbuster/2.7.3)'
+            cand -x 'File extension(s) to search for (ex: -x php -x pdf js)'
+            cand --extensions 'File extension(s) to search for (ex: -x php -x pdf js)'
+            cand -m 'Which HTTP request method(s) should be sent (default: GET)'
+            cand --methods 'Which HTTP request method(s) should be sent (default: GET)'
+            cand --data 'Request''s Body; can read data from a file if input starts with an @ (ex: @post.bin)'
+            cand -H 'Specify HTTP headers to be used in each request (ex: -H Header:val -H ''stuff: things'')'
+            cand --headers 'Specify HTTP headers to be used in each request (ex: -H Header:val -H ''stuff: things'')'
+            cand -b 'Specify HTTP cookies to be used in each request (ex: -b stuff=things)'
+            cand --cookies 'Specify HTTP cookies to be used in each request (ex: -b stuff=things)'
+            cand -Q 'Request''s URL query parameters (ex: -Q token=stuff -Q secret=key)'
+            cand --query 'Request''s URL query parameters (ex: -Q token=stuff -Q secret=key)'
+            cand --dont-scan 'URL(s) or Regex Pattern(s) to exclude from recursion/scans'
+            cand -S 'Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)'
+            cand --filter-size 'Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)'
+            cand -X 'Filter out messages via regular expression matching on the response''s body (ex: -X ''^ignore me$'')'
+            cand --filter-regex 'Filter out messages via regular expression matching on the response''s body (ex: -X ''^ignore me$'')'
+            cand -W 'Filter out messages of a particular word count (ex: -W 312 -W 91,82)'
+            cand --filter-words 'Filter out messages of a particular word count (ex: -W 312 -W 91,82)'
+            cand -N 'Filter out messages of a particular line count (ex: -N 20 -N 31,30)'
+            cand --filter-lines 'Filter out messages of a particular line count (ex: -N 20 -N 31,30)'
+            cand -C 'Filter out status codes (deny list) (ex: -C 200 -C 401)'
+            cand --filter-status 'Filter out status codes (deny list) (ex: -C 200 -C 401)'
+            cand --filter-similar-to 'Filter out pages that are similar to the given page (ex. --filter-similar-to http://site.xyz/soft404)'
+            cand -s 'Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)'
+            cand --status-codes 'Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)'
+            cand -T 'Number of seconds before a client''s request times out (default: 7)'
+            cand --timeout 'Number of seconds before a client''s request times out (default: 7)'
+            cand -t 'Number of concurrent threads (default: 50)'
+            cand --threads 'Number of concurrent threads (default: 50)'
+            cand -d 'Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)'
+            cand --depth 'Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)'
+            cand -L 'Limit total number of concurrent scans (default: 0, i.e. no limit)'
+            cand --scan-limit 'Limit total number of concurrent scans (default: 0, i.e. no limit)'
+            cand --parallel 'Run parallel feroxbuster instances (one child process per url passed via stdin)'
+            cand --rate-limit 'Limit number of requests per second (per directory) (default: 0, i.e. no limit)'
+            cand --time-limit 'Limit total run time of all scans (ex: --time-limit 10m)'
+            cand -w 'Path to the wordlist'
+            cand --wordlist 'Path to the wordlist'
+            cand -I 'File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)'
+            cand --dont-collect 'File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)'
+            cand -o 'Output file to write results to (use w/ --json for JSON entries)'
+            cand --output 'Output file to write results to (use w/ --json for JSON entries)'
+            cand --debug-log 'Output file to write log entries (use w/ --json for JSON entries)'
+            cand --stdin 'Read url(s) from STDIN'
+            cand --burp 'Set --proxy to http://127.0.0.1:8080 and set --insecure to true'
+            cand --burp-replay 'Set --replay-proxy to http://127.0.0.1:8080 and set --insecure to true'
+            cand --smart 'Set --extract-links, --auto-tune, --collect-words, and --collect-backups to true'
+            cand --thorough 'Use the same settings as --smart and set --collect-extensions to true'
+            cand -A 'Use a random User-Agent'
+            cand --random-agent 'Use a random User-Agent'
+            cand -f 'Append / to each request''s URL'
+            cand --add-slash 'Append / to each request''s URL'
+            cand -r 'Allow client to follow redirects'
+            cand --redirects 'Allow client to follow redirects'
+            cand -k 'Disables TLS certificate validation in the client'
+            cand --insecure 'Disables TLS certificate validation in the client'
+            cand -n 'Do not scan recursively'
+            cand --no-recursion 'Do not scan recursively'
+            cand --force-recursion 'Force recursion attempts on all ''found'' endpoints (still respects recursion depth)'
+            cand -e 'Extract links from response body (html, javascript, etc...); make new requests based on findings'
+            cand --extract-links 'Extract links from response body (html, javascript, etc...); make new requests based on findings'
+            cand --auto-tune 'Automatically lower scan rate when an excessive amount of errors are encountered'
+            cand --auto-bail 'Automatically stop scanning when an excessive amount of errors are encountered'
+            cand -D 'Don''t auto-filter wildcard responses'
+            cand --dont-filter 'Don''t auto-filter wildcard responses'
+            cand -E 'Automatically discover extensions and add them to --extensions (unless they''re in --dont-collect)'
+            cand --collect-extensions 'Automatically discover extensions and add them to --extensions (unless they''re in --dont-collect)'
+            cand -B 'Automatically request likely backup extensions for "found" urls'
+            cand --collect-backups 'Automatically request likely backup extensions for "found" urls'
+            cand -g 'Automatically discover important words from within responses and add them to the wordlist'
+            cand --collect-words 'Automatically discover important words from within responses and add them to the wordlist'
+            cand -v 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v''s is probably too much)'
+            cand --verbosity 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v''s is probably too much)'
+            cand --silent 'Only print URLs + turn off logging (good for piping a list of urls to other commands)'
+            cand -q 'Hide progress bars and banner (good for tmux windows w/ notifications)'
+            cand --quiet 'Hide progress bars and banner (good for tmux windows w/ notifications)'
+            cand --json 'Emit JSON logs to --output and --debug-log instead of normal text'
+            cand --no-state 'Disable state output file (*.state)'
+            cand -h 'Print help information (use `--help` for more detail)'
+            cand --help 'Print help information (use `--help` for more detail)'
+            cand -V 'Print version information'
+            cand --version 'Print version information'
+        }
+    ]
+    $completions[$command]
+}
--- a/shell_completions/feroxbuster.fish
+++ b/shell_completions/feroxbuster.fish
@@ -12,7 +12,11 @@ complete -c feroxbuster -n "__fish_use_subcommand" -l resume-from -d 'State file
 complete -c feroxbuster -n "__fish_use_subcommand" -l debug-log -d 'Output file to write log entries (use w/ --json for JSON entries)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s a -l user-agent -d 'Sets the User-Agent (default: feroxbuster/VERSION)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s x -l extensions -d 'File extension(s) to search for (ex: -x php -x pdf js)'
+complete -c feroxbuster -n "__fish_use_subcommand" -s m -l methods -d 'HTTP request method(s) (default: GET)'
+complete -c feroxbuster -n "__fish_use_subcommand" -l data -d 'HTTP Body data; can read data from a file if input starts with an @ (ex: @post.bin)'
+complete -c feroxbuster -n "__fish_use_subcommand" -l dont-scan -d 'URL(s) or Regex Pattern(s) to exclude from recursion/scans'
 complete -c feroxbuster -n "__fish_use_subcommand" -s H -l headers -d 'Specify HTTP headers (ex: -H Header:val \'stuff: things\')'
+complete -c feroxbuster -n "__fish_use_subcommand" -s b -l cookies -d 'Specify HTTP cookies (ex: -b stuff=things)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s Q -l query -d 'Specify URL query parameters (ex: -Q token=stuff -Q secret=key)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s S -l filter-size -d 'Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s X -l filter-regex -d 'Filter out messages via regular expression matching on the response\'s body (ex: -X \'^ignore me$\')'
@@ -21,11 +25,17 @@ complete -c feroxbuster -n "__fish_use_subcommand" -s N -l filter-lines -d 'Filt
 complete -c feroxbuster -n "__fish_use_subcommand" -s C -l filter-status -d 'Filter out status codes (deny list) (ex: -C 200 -C 401)'
 complete -c feroxbuster -n "__fish_use_subcommand" -l filter-similar-to -d 'Filter out pages that are similar to the given page (ex. --filter-similar-to http://site.xyz/soft404)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s L -l scan-limit -d 'Limit total number of concurrent scans (default: 0, i.e. no limit)'
+complete -c feroxbuster -n "__fish_use_subcommand" -l parallel -d 'Run parallel feroxbuster instances (one child process per url passed via stdin)'
+complete -c feroxbuster -n "__fish_use_subcommand" -l rate-limit -d 'Limit number of requests per second (per directory) (default: 0, i.e. no limit)'
 complete -c feroxbuster -n "__fish_use_subcommand" -l time-limit -d 'Limit total run time of all scans (ex: --time-limit 10m)'
 complete -c feroxbuster -n "__fish_use_subcommand" -s v -l verbosity -d 'Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v\'s is probably too much)'
-complete -c feroxbuster -n "__fish_use_subcommand" -s q -l quiet -d 'Only print URLs; Don\'t print status codes, response size, running config, etc...'
+complete -c feroxbuster -n "__fish_use_subcommand" -l silent -d 'Only print URLs + turn off logging (good for piping a list of urls to other commands)'
+complete -c feroxbuster -n "__fish_use_subcommand" -s q -l quiet -d 'Hide progress bars and banner (good for tmux windows w/ notifications)'
+complete -c feroxbuster -n "__fish_use_subcommand" -l auto-tune -d 'Automatically lower scan rate when an excessive amount of errors are encountered'
+complete -c feroxbuster -n "__fish_use_subcommand" -l auto-bail -d 'Automatically stop scanning when an excessive amount of errors are encountered'
 complete -c feroxbuster -n "__fish_use_subcommand" -l json -d 'Emit JSON logs to --output and --debug-log instead of normal text'
 complete -c feroxbuster -n "__fish_use_subcommand" -s D -l dont-filter -d 'Don\'t auto-filter wildcard responses'
+complete -c feroxbuster -n "__fish_use_subcommand" -s A -l random-agent -d 'Use a random User-Agent'
 complete -c feroxbuster -n "__fish_use_subcommand" -s r -l redirects -d 'Follow redirects'
 complete -c feroxbuster -n "__fish_use_subcommand" -s k -l insecure -d 'Disables TLS certificate validation'
 complete -c feroxbuster -n "__fish_use_subcommand" -s n -l no-recursion -d 'Do not scan recursively'
--- a/src/banner.rs
+++ b/src/banner.rs
@@ -1,753 +0,0 @@
-use crate::{
-    config::{Configuration, CONFIGURATION},
-    statistics::StatCommand,
-    utils::{make_request, status_colorizer},
-};
-use console::{style, Emoji};
-use reqwest::{Client, Url};
-use serde_json::Value;
-use std::io::Write;
-use tokio::sync::mpsc::UnboundedSender;
-
-/// macro helper to abstract away repetitive string formatting
-macro_rules! format_banner_entry_helper {
-    // \u{0020} -> unicode space
-    // \u{2502} -> vertical box drawing character, i.e. │
-    ($rune:expr, $name:expr, $value:expr, $indent:expr, $col_width:expr) => {
-        format!(
-            "\u{0020}{:\u{0020}<indent$}{:\u{0020}<col_w$}\u{2502}\u{0020}{}",
-            $rune,
-            $name,
-            $value,
-            indent = $indent,
-            col_w = $col_width
-        )
-    };
-    ($rune:expr, $name:expr, $value:expr, $value2:expr, $indent:expr, $col_width:expr) => {
-        format!(
-            "\u{0020}{:\u{0020}<indent$}{:\u{0020}<col_w$}\u{2502}\u{0020}{}:\u{0020}{}",
-            $rune,
-            $name,
-            $value,
-            $value2,
-            indent = $indent,
-            col_w = $col_width
-        )
-    };
-}
-
-/// macro that wraps another macro helper to abstract away repetitive string formatting
-macro_rules! format_banner_entry {
-    // 4 -> unicode emoji padding width
-    // 22 -> column width (when unicode rune is 4 bytes wide, 23 when it's 3)
-    // hardcoded since macros don't allow let statements
-    ($rune:expr, $name:expr, $value:expr) => {
-        format_banner_entry_helper!($rune, $name, $value, 3, 22)
-    };
-    ($rune:expr, $name:expr, $value1:expr, $value2:expr) => {
-        format_banner_entry_helper!($rune, $name, $value1, $value2, 3, 22)
-    };
-}
-
-/// Url used to query github's api; specifically used to look for the latest tagged release name
-const UPDATE_URL: &str = "https://api.github.com/repos/epi052/feroxbuster/releases/latest";
-
-/// Simple enum to hold three different update states
-#[derive(Debug)]
-enum UpdateStatus {
-    /// this version and latest release are the same
-    UpToDate,
-
-    /// this version and latest release are not the same
-    OutOfDate,
-
-    /// some error occurred during version check
-    Unknown,
-}
-
-/// Makes a request to the given url, expecting to receive a JSON response that contains a field
-/// named `tag_name` that holds a value representing the latest tagged release of this tool.
-///
-/// ex: v1.1.0
-///
-/// Returns `UpdateStatus`
-async fn needs_update(
-    client: &Client,
-    url: &str,
-    bin_version: &str,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> UpdateStatus {
-    log::trace!("enter: needs_update({:?}, {}, {:?})", client, url, tx_stats);
-
-    let unknown = UpdateStatus::Unknown;
-
-    let api_url = match Url::parse(url) {
-        Ok(url) => url,
-        Err(e) => {
-            log::error!("{}", e);
-            log::trace!("exit: needs_update -> {:?}", unknown);
-            return unknown;
-        }
-    };
-
-    if let Ok(response) = make_request(&client, &api_url, tx_stats.clone()).await {
-        let body = response.text().await.unwrap_or_default();
-
-        let json_response: Value = serde_json::from_str(&body).unwrap_or_default();
-
-        if json_response.is_null() {
-            // unwrap_or_default above should result in a null value for the json_response variable
-            log::error!("Could not parse JSON from response body");
-            log::trace!("exit: needs_update -> {:?}", unknown);
-            return unknown;
-        }
-
-        let latest_version = match json_response["tag_name"].as_str() {
-            Some(tag) => tag.trim_start_matches('v'),
-            None => {
-                log::error!("Could not get version field from JSON response");
-                log::debug!("{}", json_response);
-                log::trace!("exit: needs_update -> {:?}", unknown);
-                return unknown;
-            }
-        };
-
-        // if we've gotten this far, we have a string in the form of X.X.X where X is a number
-        // all that's left is to compare the current version with the version found above
-
-        return if latest_version == bin_version {
-            // there's really only two possible outcomes if we accept that the tag conforms to
-            // the X.X.X pattern:
-            //   1. the version strings match, meaning we're up to date
-            //   2. the version strings do not match, meaning we're out of date
-            //
-            // except for developers working on this code, nobody should ever be in a situation
-            // where they have a version greater than the latest tagged release
-            log::trace!("exit: needs_update -> UpdateStatus::UpToDate");
-            UpdateStatus::UpToDate
-        } else {
-            log::trace!("exit: needs_update -> UpdateStatus::OutOfDate");
-            UpdateStatus::OutOfDate
-        };
-    }
-
-    log::trace!("exit: needs_update -> {:?}", unknown);
-    unknown
-}
-
-/// Simple wrapper for emoji or fallback when terminal doesn't support emoji
-fn format_emoji(emoji: &str) -> String {
-    let width = console::measure_text_width(emoji);
-    let pad_len = width * width;
-    let pad = format!("{:<pad_len$}", "\u{0020}", pad_len = pad_len);
-    Emoji(emoji, &pad).to_string()
-}
-
-/// Prints the banner to stdout.
-///
-/// Only prints those settings which are either always present, or passed in by the user.
-pub async fn initialize<W>(
-    targets: &[String],
-    config: &Configuration,
-    version: &str,
-    mut writer: W,
-    tx_stats: UnboundedSender<StatCommand>,
-) where
-    W: Write,
-{
-    let artwork = format!(
-        r#"
- ___  ___  __   __     __      __         __   ___
-|__  |__  |__) |__) | /  `    /  \ \_/ | |  \ |__
-|    |___ |  \ |  \ | \__,    \__/ / \ | |__/ |___
-by Ben "epi" Risher {}                 ver: {}"#,
-        Emoji("🤓", &format!("{:<2}", "\u{0020}")),
-        version
-    );
-    let status = needs_update(&CONFIGURATION.client, UPDATE_URL, version, tx_stats).await;
-
-    let top = "───────────────────────────┬──────────────────────";
-    let addl_section = "──────────────────────────────────────────────────";
-    let bottom = "───────────────────────────┴──────────────────────";
-
-    writeln!(&mut writer, "{}", artwork).unwrap_or_default();
-    writeln!(&mut writer, "{}", top).unwrap_or_default();
-
-    // begin with always printed items
-    for target in targets {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🎯"), "Target Url", target)
-        )
-        .unwrap_or_default(); // 🎯
-    }
-
-    let mut codes = vec![];
-
-    for code in &config.status_codes {
-        codes.push(status_colorizer(&code.to_string()))
-    }
-
-    writeln!(
-        &mut writer,
-        "{}",
-        format_banner_entry!(format_emoji("🚀"), "Threads", config.threads)
-    )
-    .unwrap_or_default(); // 🚀
-
-    writeln!(
-        &mut writer,
-        "{}",
-        format_banner_entry!(format_emoji("📖"), "Wordlist", config.wordlist)
-    )
-    .unwrap_or_default(); // 📖
-
-    writeln!(
-        &mut writer,
-        "{}",
-        format_banner_entry!(
-            format_emoji("🆗"),
-            "Status Codes",
-            format!("[{}]", codes.join(", "))
-        )
-    )
-    .unwrap_or_default(); // 🆗
-
-    if !config.filter_status.is_empty() {
-        // exception here for optional print due to me wanting the allows and denys to be printed
-        // one after the other
-        let mut code_filters = vec![];
-
-        for code in &config.filter_status {
-            code_filters.push(status_colorizer(&code.to_string()))
-        }
-
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(
-                format_emoji("💢"),
-                "Status Code Filters",
-                format!("[{}]", code_filters.join(", "))
-            )
-        )
-        .unwrap_or_default(); // 💢
-    }
-
-    writeln!(
-        &mut writer,
-        "{}",
-        format_banner_entry!(format_emoji("💥"), "Timeout (secs)", config.timeout)
-    )
-    .unwrap_or_default(); // 💥
-
-    writeln!(
-        &mut writer,
-        "{}",
-        format_banner_entry!(format_emoji("🦡"), "User-Agent", config.user_agent)
-    )
-    .unwrap_or_default(); // 🦡
-
-    // followed by the maybe printed or variably displayed values
-    if !config.config.is_empty() {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("💉"), "Config File", config.config)
-        )
-        .unwrap_or_default(); // 💉
-    }
-
-    if !config.proxy.is_empty() {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("💎"), "Proxy", config.proxy)
-        )
-        .unwrap_or_default(); // 💎
-    }
-
-    if !config.replay_proxy.is_empty() {
-        // i include replay codes logic here because in config.rs, replay codes are set to the
-        // value in status codes, meaning it's never empty
-
-        let mut replay_codes = vec![];
-
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🎥"), "Replay Proxy", config.replay_proxy)
-        )
-        .unwrap_or_default(); // 🎥
-
-        for code in &config.replay_codes {
-            replay_codes.push(status_colorizer(&code.to_string()))
-        }
-
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(
-                format_emoji("📼"),
-                "Replay Proxy Codes",
-                format!("[{}]", replay_codes.join(", "))
-            )
-        )
-        .unwrap_or_default(); // 📼
-    }
-
-    if !config.headers.is_empty() {
-        for (name, value) in &config.headers {
-            writeln!(
-                &mut writer,
-                "{}",
-                format_banner_entry!(format_emoji("🤯"), "Header", name, value)
-            )
-            .unwrap_or_default(); // 🤯
-        }
-    }
-
-    if !config.filter_size.is_empty() {
-        for filter in &config.filter_size {
-            writeln!(
-                &mut writer,
-                "{}",
-                format_banner_entry!(format_emoji("💢"), "Size Filter", filter)
-            )
-            .unwrap_or_default(); // 💢
-        }
-    }
-
-    if !config.filter_similar.is_empty() {
-        for filter in &config.filter_similar {
-            writeln!(
-                &mut writer,
-                "{}",
-                format_banner_entry!(format_emoji("💢"), "Similarity Filter", filter)
-            )
-            .unwrap_or_default(); // 💢
-        }
-    }
-
-    for filter in &config.filter_word_count {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("💢"), "Word Count Filter", filter)
-        )
-        .unwrap_or_default(); // 💢
-    }
-
-    for filter in &config.filter_line_count {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("💢"), "Line Count Filter", filter)
-        )
-        .unwrap_or_default(); // 💢
-    }
-
-    for filter in &config.filter_regex {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("💢"), "Regex Filter", filter)
-        )
-        .unwrap_or_default(); // 💢
-    }
-
-    if config.extract_links {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🔎"), "Extract Links", config.extract_links)
-        )
-        .unwrap_or_default(); // 🔎
-    }
-
-    if config.json {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🧔"), "JSON Output", config.json)
-        )
-        .unwrap_or_default(); // 🧔
-    }
-
-    if !config.queries.is_empty() {
-        for query in &config.queries {
-            writeln!(
-                &mut writer,
-                "{}",
-                format_banner_entry!(
-                    format_emoji("🤔"),
-                    "Query Parameter",
-                    format!("{}={}", query.0, query.1)
-                )
-            )
-            .unwrap_or_default(); // 🤔
-        }
-    }
-
-    if !config.output.is_empty() {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("💾"), "Output File", config.output)
-        )
-        .unwrap_or_default(); // 💾
-    }
-
-    if !config.debug_log.is_empty() {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🪲"), "Debugging Log", config.debug_log)
-        )
-        .unwrap_or_default(); // 🪲
-    }
-
-    if !config.extensions.is_empty() {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(
-                format_emoji("💲"),
-                "Extensions",
-                format!("[{}]", config.extensions.join(", "))
-            )
-        )
-        .unwrap_or_default(); // 💲
-    }
-
-    if config.insecure {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🔓"), "Insecure", config.insecure)
-        )
-        .unwrap_or_default(); // 🔓
-    }
-
-    if config.redirects {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("📍"), "Follow Redirects", config.redirects)
-        )
-        .unwrap_or_default(); // 📍
-    }
-
-    if config.dont_filter {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🤪"), "Filter Wildcards", !config.dont_filter)
-        )
-        .unwrap_or_default(); // 🤪
-    }
-
-    let volume = ["🔈", "🔉", "🔊", "📢"];
-    if let 1..=4 = config.verbosity {
-        //speaker medium volume (increasing with verbosity to loudspeaker)
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(
-                format_emoji(volume[config.verbosity as usize - 1]),
-                "Verbosity",
-                config.verbosity
-            )
-        )
-        .unwrap_or_default();
-    }
-
-    if config.add_slash {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🪓"), "Add Slash", config.add_slash)
-        )
-        .unwrap_or_default(); // 🪓
-    }
-
-    if !config.no_recursion {
-        if config.depth == 0 {
-            writeln!(
-                &mut writer,
-                "{}",
-                format_banner_entry!(format_emoji("🔃"), "Recursion Depth", "INFINITE")
-            )
-            .unwrap_or_default(); // 🔃
-        } else {
-            writeln!(
-                &mut writer,
-                "{}",
-                format_banner_entry!(format_emoji("🔃"), "Recursion Depth", config.depth)
-            )
-            .unwrap_or_default(); // 🔃
-        }
-    } else {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🚫"), "Do Not Recurse", config.no_recursion)
-        )
-        .unwrap_or_default(); // 🚫
-    }
-
-    if CONFIGURATION.scan_limit > 0 {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(
-                format_emoji("🦥"),
-                "Concurrent Scan Limit",
-                config.scan_limit
-            )
-        )
-        .unwrap_or_default(); // 🦥
-    }
-
-    if !CONFIGURATION.time_limit.is_empty() {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(format_emoji("🕖"), "Time Limit", config.time_limit)
-        )
-        .unwrap_or_default(); // 🕖
-    }
-
-    if matches!(status, UpdateStatus::OutOfDate) {
-        writeln!(
-            &mut writer,
-            "{}",
-            format_banner_entry!(
-                format_emoji("🎉"),
-                "New Version Available",
-                "https://github.com/epi052/feroxbuster/releases/latest"
-            )
-        )
-        .unwrap_or_default(); // 🎉
-    }
-
-    writeln!(&mut writer, "{}", bottom).unwrap_or_default();
-    // ⏯
-    writeln!(
-        &mut writer,
-        " {}  Press [{}] to use the {}™",
-        format_emoji("🏁"),
-        style("ENTER").yellow(),
-        style("Scan Cancel Menu").bright().yellow(),
-    )
-    .unwrap_or_default();
-
-    writeln!(&mut writer, "{}", addl_section).unwrap_or_default();
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::{FeroxChannel, VERSION};
-    use httpmock::Method::GET;
-    use httpmock::MockServer;
-    use std::fs::read_to_string;
-    use std::io::stderr;
-    use std::time::Duration;
-    use tempfile::NamedTempFile;
-    use tokio::sync::mpsc;
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test to hit no execution of targets for loop in banner
-    async fn banner_intialize_without_targets() {
-        let config = Configuration::default();
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        initialize(&[], &config, VERSION, stderr(), tx).await;
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test to hit no execution of statuscode for loop in banner
-    async fn banner_intialize_without_status_codes() {
-        let config = Configuration {
-            status_codes: vec![],
-            ..Default::default()
-        };
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        initialize(
-            &[String::from("http://localhost")],
-            &config,
-            VERSION,
-            stderr(),
-            tx,
-        )
-        .await;
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test to hit an empty config file
-    async fn banner_intialize_without_config_file() {
-        let config = Configuration {
-            config: String::new(),
-            ..Default::default()
-        };
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        initialize(
-            &[String::from("http://localhost")],
-            &config,
-            VERSION,
-            stderr(),
-            tx,
-        )
-        .await;
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test to hit an empty config file
-    async fn banner_intialize_without_queries() {
-        let config = Configuration {
-            queries: vec![(String::new(), String::new())],
-            ..Default::default()
-        };
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        initialize(
-            &[String::from("http://localhost")],
-            &config,
-            VERSION,
-            stderr(),
-            tx,
-        )
-        .await;
-    }
-
-    #[ignore]
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test to show that a new version is available for download
-    async fn banner_intialize_with_mismatched_version() {
-        let config = Configuration::default();
-        let file = NamedTempFile::new().unwrap();
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        initialize(
-            &[String::from("http://localhost")],
-            &config,
-            "mismatched-version",
-            &file,
-            tx,
-        )
-        .await;
-        let contents = read_to_string(file.path()).unwrap();
-        println!("contents: {}", contents);
-        assert!(contents.contains("New Version Available"));
-        assert!(contents.contains("https://github.com/epi052/feroxbuster/releases/latest"));
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test that
-    async fn banner_needs_update_returns_unknown_with_bad_url() {
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let result = needs_update(&CONFIGURATION.client, &"", VERSION, tx).await;
-        assert!(matches!(result, UpdateStatus::Unknown));
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test return value of good url to needs_update
-    async fn banner_needs_update_returns_up_to_date() {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then| {
-            when.method(GET).path("/latest");
-            then.status(200).body("{\"tag_name\":\"v1.1.0\"}");
-        });
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let result = needs_update(&CONFIGURATION.client, &srv.url("/latest"), "1.1.0", tx).await;
-
-        assert_eq!(mock.hits(), 1);
-        assert!(matches!(result, UpdateStatus::UpToDate));
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test return value of good url to needs_update that returns a newer version than current
-    async fn banner_needs_update_returns_out_of_date() {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then| {
-            when.method(GET).path("/latest");
-            then.status(200).body("{\"tag_name\":\"v1.1.0\"}");
-        });
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let result = needs_update(&CONFIGURATION.client, &srv.url("/latest"), "1.0.1", tx).await;
-
-        assert_eq!(mock.hits(), 1);
-        assert!(matches!(result, UpdateStatus::OutOfDate));
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test return value of good url that times out
-    async fn banner_needs_update_returns_unknown_on_timeout() {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then| {
-            when.method(GET).path("/latest");
-            then.status(200)
-                .body("{\"tag_name\":\"v1.1.0\"}")
-                .delay(Duration::from_secs(8));
-        });
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let result = needs_update(&CONFIGURATION.client, &srv.url("/latest"), "1.0.1", tx).await;
-
-        assert_eq!(mock.hits(), 1);
-        assert!(matches!(result, UpdateStatus::Unknown));
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test return value of good url with bad json response
-    async fn banner_needs_update_returns_unknown_on_bad_json_response() {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then| {
-            when.method(GET).path("/latest");
-            then.status(200).body("not json");
-        });
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let result = needs_update(&CONFIGURATION.client, &srv.url("/latest"), "1.0.1", tx).await;
-
-        assert_eq!(mock.hits(), 1);
-        assert!(matches!(result, UpdateStatus::Unknown));
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test return value of good url with json response that lacks the tag_name field
-    async fn banner_needs_update_returns_unknown_on_json_without_correct_tag() {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then| {
-            when.method(GET).path("/latest");
-            then.status(200)
-                .body("{\"no tag_name\": \"doesn't exist\"}");
-        });
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let result = needs_update(&CONFIGURATION.client, &srv.url("/latest"), "1.0.1", tx).await;
-
-        assert_eq!(mock.hits(), 1);
-        assert!(matches!(result, UpdateStatus::Unknown));
-    }
-}
--- a/src/banner/container.rs
+++ b/src/banner/container.rs
@@ -0,0 +1,685 @@
+use super::entry::BannerEntry;
+use crate::{
+    config::Configuration,
+    event_handlers::Handles,
+    utils::{logged_request, status_colorizer},
+    DEFAULT_IGNORED_EXTENSIONS, DEFAULT_METHOD, VERSION,
+};
+use anyhow::{bail, Result};
+use console::{style, Emoji};
+use reqwest::Url;
+use serde_json::Value;
+use std::{io::Write, sync::Arc};
+
+/// Url used to query github's api; specifically used to look for the latest tagged release name
+pub const UPDATE_URL: &str = "https://api.github.com/repos/epi052/feroxbuster/releases/latest";
+
+/// Simple enum to hold three different update states
+#[derive(Debug)]
+pub(super) enum UpdateStatus {
+    /// this version and latest release are the same
+    UpToDate,
+
+    /// this version and latest release are not the same
+    OutOfDate,
+
+    /// some error occurred during version check
+    Unknown,
+}
+
+/// Banner object, contains multiple BannerEntry's and knows how to display itself
+pub struct Banner {
+    /// all live targets
+    targets: Vec<BannerEntry>,
+
+    /// represents Configuration.status_codes
+    status_codes: BannerEntry,
+
+    /// represents Configuration.filter_status
+    filter_status: BannerEntry,
+
+    /// represents Configuration.threads
+    threads: BannerEntry,
+
+    /// represents Configuration.wordlist
+    wordlist: BannerEntry,
+
+    /// represents Configuration.timeout
+    timeout: BannerEntry,
+
+    /// represents Configuration.user_agent
+    user_agent: BannerEntry,
+
+    /// represents Configuration.random_agent
+    random_agent: BannerEntry,
+
+    /// represents Configuration.config
+    config: BannerEntry,
+
+    /// represents Configuration.proxy
+    proxy: BannerEntry,
+
+    /// represents Configuration.replay_proxy
+    replay_proxy: BannerEntry,
+
+    /// represents Configuration.replay_codes
+    replay_codes: BannerEntry,
+
+    /// represents Configuration.headers
+    headers: Vec<BannerEntry>,
+
+    /// represents Configuration.filter_size
+    filter_size: Vec<BannerEntry>,
+
+    /// represents Configuration.filter_similar
+    filter_similar: Vec<BannerEntry>,
+
+    /// represents Configuration.filter_word_count
+    filter_word_count: Vec<BannerEntry>,
+
+    /// represents Configuration.filter_line_count
+    filter_line_count: Vec<BannerEntry>,
+
+    /// represents Configuration.filter_regex
+    filter_regex: Vec<BannerEntry>,
+
+    /// represents Configuration.extract_links
+    extract_links: BannerEntry,
+
+    /// represents Configuration.json
+    json: BannerEntry,
+
+    /// represents Configuration.output
+    output: BannerEntry,
+
+    /// represents Configuration.debug_log
+    debug_log: BannerEntry,
+
+    /// represents Configuration.extensions
+    extensions: BannerEntry,
+
+    /// represents Configuration.methods
+    methods: BannerEntry,
+
+    /// represents Configuration.data
+    data: BannerEntry,
+
+    /// represents Configuration.insecure
+    insecure: BannerEntry,
+
+    /// represents Configuration.redirects
+    redirects: BannerEntry,
+
+    /// represents Configuration.dont_filter
+    dont_filter: BannerEntry,
+
+    /// represents Configuration.queries
+    queries: Vec<BannerEntry>,
+
+    /// represents Configuration.verbosity
+    verbosity: BannerEntry,
+
+    /// represents Configuration.add_slash
+    add_slash: BannerEntry,
+
+    /// represents Configuration.no_recursion
+    no_recursion: BannerEntry,
+
+    /// represents Configuration.scan_limit
+    scan_limit: BannerEntry,
+
+    /// represents Configuration.time_limit
+    time_limit: BannerEntry,
+
+    /// represents Configuration.rate_limit
+    rate_limit: BannerEntry,
+
+    /// represents Configuration.parallel
+    parallel: BannerEntry,
+
+    /// represents Configuration.auto_tune
+    auto_tune: BannerEntry,
+
+    /// represents Configuration.auto_bail
+    auto_bail: BannerEntry,
+
+    /// represents Configuration.url_denylist
+    url_denylist: Vec<BannerEntry>,
+
+    /// current version of feroxbuster
+    pub(super) version: String,
+
+    /// whether or not there is a known new version
+    pub(super) update_status: UpdateStatus,
+
+    /// represents Configuration.collect_extensions
+    collect_extensions: BannerEntry,
+
+    /// represents Configuration.dont_collect
+    dont_collect: BannerEntry,
+
+    /// represents Configuration.collect_backups
+    collect_backups: BannerEntry,
+
+    /// represents Configuration.collect_words
+    collect_words: BannerEntry,
+
+    /// represents Configuration.collect_words
+    force_recursion: BannerEntry,
+}
+
+/// implementation of Banner
+impl Banner {
+    /// Create a new Banner from a Configuration and live targets
+    pub fn new(tgts: &[String], config: &Configuration) -> Self {
+        let mut targets = Vec::new();
+        let mut url_denylist = Vec::new();
+        let mut code_filters = Vec::new();
+        let mut replay_codes = Vec::new();
+        let mut headers = Vec::new();
+        let mut filter_size = Vec::new();
+        let mut filter_similar = Vec::new();
+        let mut filter_word_count = Vec::new();
+        let mut filter_line_count = Vec::new();
+        let mut filter_regex = Vec::new();
+        let mut queries = Vec::new();
+
+        for target in tgts {
+            targets.push(BannerEntry::new("🎯", "Target Url", target));
+        }
+
+        for denied_url in &config.url_denylist {
+            url_denylist.push(BannerEntry::new(
+                "🚫",
+                "Don't Scan Url",
+                denied_url.as_str(),
+            ));
+        }
+
+        for denied_regex in &config.regex_denylist {
+            url_denylist.push(BannerEntry::new(
+                "🚫",
+                "Don't Scan Regex",
+                denied_regex.as_str(),
+            ));
+        }
+
+        let mut codes = vec![];
+        for code in &config.status_codes {
+            codes.push(status_colorizer(&code.to_string()))
+        }
+        let status_codes =
+            BannerEntry::new("👌", "Status Codes", &format!("[{}]", codes.join(", ")));
+
+        for code in &config.filter_status {
+            code_filters.push(status_colorizer(&code.to_string()))
+        }
+        let filter_status = BannerEntry::new(
+            "💢",
+            "Status Code Filters",
+            &format!("[{}]", code_filters.join(", ")),
+        );
+
+        for code in &config.replay_codes {
+            replay_codes.push(status_colorizer(&code.to_string()))
+        }
+        let replay_codes = BannerEntry::new(
+            "📼",
+            "Replay Proxy Codes",
+            &format!("[{}]", replay_codes.join(", ")),
+        );
+
+        for (name, value) in &config.headers {
+            headers.push(BannerEntry::new(
+                "🤯",
+                "Header",
+                &format!("{}: {}", name, value),
+            ));
+        }
+
+        for filter in &config.filter_size {
+            filter_size.push(BannerEntry::new("💢", "Size Filter", &filter.to_string()));
+        }
+
+        for filter in &config.filter_similar {
+            filter_similar.push(BannerEntry::new("💢", "Similarity Filter", filter));
+        }
+
+        for filter in &config.filter_word_count {
+            filter_word_count.push(BannerEntry::new(
+                "💢",
+                "Word Count Filter",
+                &filter.to_string(),
+            ));
+        }
+
+        for filter in &config.filter_line_count {
+            filter_line_count.push(BannerEntry::new(
+                "💢",
+                "Line Count Filter",
+                &filter.to_string(),
+            ));
+        }
+
+        for filter in &config.filter_regex {
+            filter_regex.push(BannerEntry::new("💢", "Regex Filter", filter));
+        }
+
+        for query in &config.queries {
+            queries.push(BannerEntry::new(
+                "🤔",
+                "Query Parameter",
+                &format!("{}={}", query.0, query.1),
+            ));
+        }
+
+        let volume = ["🔈", "🔉", "🔊", "📢"];
+        let verbosity = if let 1..=4 = config.verbosity {
+            //speaker medium volume (increasing with verbosity to loudspeaker)
+            BannerEntry::new(
+                volume[config.verbosity as usize - 1],
+                "Verbosity",
+                &config.verbosity.to_string(),
+            )
+        } else {
+            BannerEntry::default()
+        };
+
+        let no_recursion = if !config.no_recursion {
+            let depth = if config.depth == 0 {
+                "INFINITE".to_string()
+            } else {
+                config.depth.to_string()
+            };
+
+            BannerEntry::new("🔃", "Recursion Depth", &depth)
+        } else {
+            BannerEntry::new("🚫", "Do Not Recurse", &config.no_recursion.to_string())
+        };
+
+        let scan_limit = BannerEntry::new(
+            "🦥",
+            "Concurrent Scan Limit",
+            &config.scan_limit.to_string(),
+        );
+
+        let force_recursion =
+            BannerEntry::new("🤘", "Force Recursion", &config.force_recursion.to_string());
+        let replay_proxy = BannerEntry::new("🎥", "Replay Proxy", &config.replay_proxy);
+        let auto_tune = BannerEntry::new("🎶", "Auto Tune", &config.auto_tune.to_string());
+        let auto_bail = BannerEntry::new("🪣", "Auto Bail", &config.auto_bail.to_string());
+        let cfg = BannerEntry::new("💉", "Config File", &config.config);
+        let proxy = BannerEntry::new("💎", "Proxy", &config.proxy);
+        let threads = BannerEntry::new("🚀", "Threads", &config.threads.to_string());
+        let wordlist = BannerEntry::new("📖", "Wordlist", &config.wordlist);
+        let timeout = BannerEntry::new("💥", "Timeout (secs)", &config.timeout.to_string());
+        let user_agent = BannerEntry::new("🦡", "User-Agent", &config.user_agent);
+        let random_agent = BannerEntry::new("🦡", "User-Agent", "Random");
+        let extract_links =
+            BannerEntry::new("🔎", "Extract Links", &config.extract_links.to_string());
+        let json = BannerEntry::new("🧔", "JSON Output", &config.json.to_string());
+        let output = BannerEntry::new("💾", "Output File", &config.output);
+        let debug_log = BannerEntry::new("🪲", "Debugging Log", &config.debug_log);
+        let extensions = BannerEntry::new(
+            "💲",
+            "Extensions",
+            &format!("[{}]", config.extensions.join(", ")),
+        );
+        let methods = BannerEntry::new(
+            "🏁",
+            "HTTP methods",
+            &format!("[{}]", config.methods.join(", ")),
+        );
+
+        let dont_collect = if config.dont_collect == DEFAULT_IGNORED_EXTENSIONS {
+            // default has 30+ extensions, just trim it up
+            BannerEntry::new(
+                "💸",
+                "Ignored Extensions",
+                "[Images, Movies, Audio, etc...]",
+            )
+        } else {
+            BannerEntry::new(
+                "💸",
+                "Ignored Extensions",
+                &format!("[{}]", config.dont_collect.join(", ")),
+            )
+        };
+
+        let offset = std::cmp::min(config.data.len(), 30);
+        let data = String::from_utf8(config.data[..offset].to_vec())
+            .unwrap_or_else(|_err| {
+                format!(
+                    "{:x?} ...",
+                    &config.data[..std::cmp::min(config.data.len(), 13)]
+                )
+            })
+            .replace('\n', " ")
+            .replace('\r', "");
+        let data = BannerEntry::new("💣", "HTTP Body", &data);
+        let insecure = BannerEntry::new("🔓", "Insecure", &config.insecure.to_string());
+        let redirects = BannerEntry::new("📍", "Follow Redirects", &config.redirects.to_string());
+        let dont_filter =
+            BannerEntry::new("🤪", "Filter Wildcards", &(!config.dont_filter).to_string());
+        let add_slash = BannerEntry::new("🪓", "Add Slash", &config.add_slash.to_string());
+        let time_limit = BannerEntry::new("🕖", "Time Limit", &config.time_limit);
+        let parallel = BannerEntry::new("🛤", "Parallel Scans", &config.parallel.to_string());
+        let rate_limit =
+            BannerEntry::new("🚧", "Requests per Second", &config.rate_limit.to_string());
+        let collect_extensions = BannerEntry::new(
+            "💰",
+            "Collect Extensions",
+            &config.collect_extensions.to_string(),
+        );
+        let collect_backups =
+            BannerEntry::new("🏦", "Collect Backups", &config.collect_backups.to_string());
+
+        let collect_words =
+            BannerEntry::new("🤑", "Collect Words", &config.collect_words.to_string());
+
+        Self {
+            targets,
+            status_codes,
+            threads,
+            wordlist,
+            filter_status,
+            timeout,
+            user_agent,
+            random_agent,
+            auto_bail,
+            auto_tune,
+            proxy,
+            replay_codes,
+            replay_proxy,
+            headers,
+            filter_size,
+            filter_similar,
+            filter_word_count,
+            filter_line_count,
+            filter_regex,
+            extract_links,
+            parallel,
+            json,
+            queries,
+            output,
+            debug_log,
+            extensions,
+            methods,
+            data,
+            insecure,
+            dont_filter,
+            redirects,
+            verbosity,
+            add_slash,
+            no_recursion,
+            rate_limit,
+            scan_limit,
+            force_recursion,
+            time_limit,
+            url_denylist,
+            collect_extensions,
+            collect_backups,
+            collect_words,
+            dont_collect,
+            config: cfg,
+            version: VERSION.to_string(),
+            update_status: UpdateStatus::Unknown,
+        }
+    }
+
+    /// get a fancy header for the banner
+    fn header(&self) -> String {
+        let artwork = format!(
+            r#"
+ ___  ___  __   __     __      __         __   ___
+|__  |__  |__) |__) | /  `    /  \ \_/ | |  \ |__
+|    |___ |  \ |  \ | \__,    \__/ / \ | |__/ |___
+by Ben "epi" Risher {}                 ver: {}"#,
+            Emoji("🤓", &format!("{:<2}", "\u{0020}")),
+            self.version
+        );
+
+        let top = "───────────────────────────┬──────────────────────";
+
+        format!("{}\n{}", artwork, top)
+    }
+
+    /// get a fancy footer for the banner
+    fn footer(&self) -> String {
+        let addl_section = "──────────────────────────────────────────────────";
+        let bottom = "───────────────────────────┴──────────────────────";
+
+        let instructions = format!(
+            " 🏁  Press [{}] to use the {}™",
+            style("ENTER").yellow(),
+            style("Scan Management Menu").bright().yellow(),
+        );
+
+        format!("{}\n{}\n{}", bottom, instructions, addl_section)
+    }
+
+    /// Makes a request to the given url, expecting to receive a JSON response that contains a field
+    /// named `tag_name` that holds a value representing the latest tagged release of this tool.
+    ///
+    /// ex: v1.1.0
+    pub async fn check_for_updates(&mut self, url: &str, handles: Arc<Handles>) -> Result<()> {
+        log::trace!("enter: needs_update({}, {:?})", url, handles);
+
+        let api_url = Url::parse(url)?;
+
+        let result = logged_request(&api_url, DEFAULT_METHOD, None, handles.clone()).await?;
+        let body = result.text().await?;
+
+        let json_response: Value = serde_json::from_str(&body)?;
+
+        let latest_version = match json_response["tag_name"].as_str() {
+            Some(tag) => tag.trim_start_matches('v'),
+            None => {
+                bail!("JSON has no tag_name: {}", json_response);
+            }
+        };
+
+        // if we've gotten this far, we have a string in the form of X.X.X where X is a number
+        // all that's left is to compare the current version with the version found above
+
+        if latest_version == self.version {
+            // there's really only two possible outcomes if we accept that the tag conforms to
+            // the X.X.X pattern:
+            //   1. the version strings match, meaning we're up to date
+            //   2. the version strings do not match, meaning we're out of date
+            //
+            // except for developers working on this code, nobody should ever be in a situation
+            // where they have a version greater than the latest tagged release
+            self.update_status = UpdateStatus::UpToDate;
+        } else {
+            self.update_status = UpdateStatus::OutOfDate;
+        }
+
+        log::trace!("exit: check_for_updates -> {:?}", self.update_status);
+        Ok(())
+    }
+
+    /// display the banner on Write writer
+    pub fn print_to<W>(&self, mut writer: W, config: Arc<Configuration>) -> Result<()>
+    where
+        W: Write,
+    {
+        writeln!(&mut writer, "{}", self.header())?;
+
+        // begin with always printed items
+        for target in &self.targets {
+            writeln!(&mut writer, "{}", target)?;
+        }
+
+        for denied_url in &self.url_denylist {
+            writeln!(&mut writer, "{}", denied_url)?;
+        }
+
+        writeln!(&mut writer, "{}", self.threads)?;
+        writeln!(&mut writer, "{}", self.wordlist)?;
+
+        if config.filter_status.is_empty() {
+            // -C and -s are mutually exclusive, and -s meaning changes when -C is used
+            // so only print one or the other
+            writeln!(&mut writer, "{}", self.status_codes)?;
+        } else {
+            writeln!(&mut writer, "{}", self.filter_status)?;
+        }
+
+        writeln!(&mut writer, "{}", self.timeout)?;
+
+        if config.random_agent {
+            writeln!(&mut writer, "{}", self.random_agent)?;
+        } else {
+            writeln!(&mut writer, "{}", self.user_agent)?;
+        }
+
+        // followed by the maybe printed or variably displayed values
+        if !config.config.is_empty() {
+            writeln!(&mut writer, "{}", self.config)?;
+        }
+
+        if !config.proxy.is_empty() {
+            writeln!(&mut writer, "{}", self.proxy)?;
+        }
+
+        if !config.replay_proxy.is_empty() {
+            // i include replay codes logic here because in config.rs, replay codes are set to the
+            // value in status codes, meaning it's never empty
+            writeln!(&mut writer, "{}", self.replay_proxy)?;
+            writeln!(&mut writer, "{}", self.replay_codes)?;
+        }
+
+        for header in &self.headers {
+            writeln!(&mut writer, "{}", header)?;
+        }
+
+        for filter in &self.filter_size {
+            writeln!(&mut writer, "{}", filter)?;
+        }
+
+        for filter in &self.filter_similar {
+            writeln!(&mut writer, "{}", filter)?;
+        }
+
+        for filter in &self.filter_word_count {
+            writeln!(&mut writer, "{}", filter)?;
+        }
+
+        for filter in &self.filter_line_count {
+            writeln!(&mut writer, "{}", filter)?;
+        }
+
+        for filter in &self.filter_regex {
+            writeln!(&mut writer, "{}", filter)?;
+        }
+
+        if config.extract_links {
+            writeln!(&mut writer, "{}", self.extract_links)?;
+        }
+
+        if config.json {
+            writeln!(&mut writer, "{}", self.json)?;
+        }
+
+        for query in &self.queries {
+            writeln!(&mut writer, "{}", query)?;
+        }
+
+        if !config.output.is_empty() {
+            writeln!(&mut writer, "{}", self.output)?;
+        }
+
+        if !config.debug_log.is_empty() {
+            writeln!(&mut writer, "{}", self.debug_log)?;
+        }
+
+        if !config.extensions.is_empty() {
+            writeln!(&mut writer, "{}", self.extensions)?;
+        }
+
+        if config.collect_extensions {
+            // dont-collect is active only when collect-extensions is used
+            writeln!(&mut writer, "{}", self.collect_extensions)?;
+            writeln!(&mut writer, "{}", self.dont_collect)?;
+        }
+
+        if config.collect_backups {
+            writeln!(&mut writer, "{}", self.collect_backups)?;
+        }
+
+        if config.collect_words {
+            writeln!(&mut writer, "{}", self.collect_words)?;
+        }
+
+        if !config.methods.is_empty() {
+            writeln!(&mut writer, "{}", self.methods)?;
+        }
+
+        if !config.data.is_empty() {
+            writeln!(&mut writer, "{}", self.data)?;
+        }
+
+        if config.insecure {
+            writeln!(&mut writer, "{}", self.insecure)?;
+        }
+
+        if config.auto_bail {
+            writeln!(&mut writer, "{}", self.auto_bail)?;
+        }
+        if config.auto_tune {
+            writeln!(&mut writer, "{}", self.auto_tune)?;
+        }
+
+        if config.redirects {
+            writeln!(&mut writer, "{}", self.redirects)?;
+        }
+
+        if config.dont_filter {
+            writeln!(&mut writer, "{}", self.dont_filter)?;
+        }
+
+        if let 1..=4 = config.verbosity {
+            writeln!(&mut writer, "{}", self.verbosity)?;
+        }
+
+        if config.add_slash {
+            writeln!(&mut writer, "{}", self.add_slash)?;
+        }
+
+        writeln!(&mut writer, "{}", self.no_recursion)?;
+
+        if config.force_recursion {
+            writeln!(&mut writer, "{}", self.force_recursion)?;
+        }
+
+        if config.scan_limit > 0 {
+            writeln!(&mut writer, "{}", self.scan_limit)?;
+        }
+
+        if config.parallel > 0 {
+            writeln!(&mut writer, "{}", self.parallel)?;
+        }
+
+        if config.rate_limit > 0 {
+            writeln!(&mut writer, "{}", self.rate_limit)?;
+        }
+
+        if !config.time_limit.is_empty() {
+            writeln!(&mut writer, "{}", self.time_limit)?;
+        }
+
+        if matches!(self.update_status, UpdateStatus::OutOfDate) {
+            let update = BannerEntry::new(
+                "🎉",
+                "New Version Available",
+                "https://github.com/epi052/feroxbuster/releases/latest",
+            );
+            writeln!(&mut writer, "{}", update)?;
+        }
+
+        writeln!(&mut writer, "{}", self.footer())?;
+
+        Ok(())
+    }
+}
--- a/src/banner/entry.rs
+++ b/src/banner/entry.rs
@@ -0,0 +1,57 @@
+use console::{measure_text_width, Emoji};
+use std::fmt;
+
+/// Initial visual indentation size used in formatting banner entries
+const INDENT: usize = 3;
+
+/// Column width used in formatting banner entries
+const COL_WIDTH: usize = 22;
+
+/// Represents a single line on the banner
+#[derive(Default)]
+pub(super) struct BannerEntry {
+    /// emoji used in the banner entry
+    emoji: String,
+
+    /// title used in the banner entry
+    title: String,
+
+    /// value passed in via config/cli/defaults
+    value: String,
+}
+
+/// implementation of a banner entry
+impl BannerEntry {
+    /// Create a new banner entry from given fields
+    pub fn new(emoji: &str, title: &str, value: &str) -> Self {
+        BannerEntry {
+            emoji: emoji.to_string(),
+            title: title.to_string(),
+            value: value.to_string(),
+        }
+    }
+
+    /// Simple wrapper for emoji or fallback when terminal doesn't support emoji
+    fn format_emoji(&self) -> String {
+        let width = measure_text_width(&self.emoji);
+        let pad_len = width * width;
+        let pad = format!("{:<pad_len$}", "\u{0020}", pad_len = pad_len);
+        Emoji(&self.emoji, &pad).to_string()
+    }
+}
+
+/// Display implementation for a banner entry
+impl fmt::Display for BannerEntry {
+    /// Display formatter for the given banner entry
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "\u{0020}{:\u{0020}<indent$}{:\u{0020}<width$}\u{2502}\u{0020}{}",
+            self.format_emoji(),
+            self.title,
+            self.value,
+            indent = INDENT,
+            width = COL_WIDTH
+        )
+    }
+}
--- a/src/banner/mod.rs
+++ b/src/banner/mod.rs
@@ -0,0 +1,8 @@
+//! all logic related to building/printing the banner seen when scans start
+mod container;
+mod entry;
+
+#[cfg(test)]
+mod tests;
+
+pub use self::container::{Banner, UPDATE_URL};
--- a/src/banner/tests.rs
+++ b/src/banner/tests.rs
@@ -0,0 +1,174 @@
+use super::container::UpdateStatus;
+use super::*;
+use crate::{config::Configuration, event_handlers::Handles, scan_manager::FeroxScans};
+use httpmock::Method::GET;
+use httpmock::MockServer;
+use std::{io::stderr, sync::Arc, time::Duration};
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test to hit no execution of targets for loop in banner
+async fn banner_intialize_without_targets() {
+    let config = Configuration::new().unwrap();
+    let banner = Banner::new(&[], &config);
+    banner.print_to(stderr(), Arc::new(config)).unwrap();
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test to hit no execution of statuscode for loop in banner
+async fn banner_intialize_without_status_codes() {
+    let config = Configuration {
+        status_codes: vec![],
+        ..Default::default()
+    };
+
+    let banner = Banner::new(&[String::from("http://localhost")], &config);
+    banner.print_to(stderr(), Arc::new(config)).unwrap();
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test to hit an empty config file
+async fn banner_intialize_without_config_file() {
+    let config = Configuration {
+        config: String::new(),
+        ..Default::default()
+    };
+
+    let banner = Banner::new(&[String::from("http://localhost")], &config);
+    banner.print_to(stderr(), Arc::new(config)).unwrap();
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test to hit an empty queries
+async fn banner_intialize_without_queries() {
+    let config = Configuration {
+        queries: vec![(String::new(), String::new())],
+        ..Default::default()
+    };
+
+    let banner = Banner::new(&[String::from("http://localhost")], &config);
+    banner.print_to(stderr(), Arc::new(config)).unwrap();
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test that
+async fn banner_needs_update_returns_unknown_with_bad_url() {
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let mut banner = Banner::new(
+        &[String::from("http://localhost")],
+        &Configuration::new().unwrap(),
+    );
+
+    let _ = banner.check_for_updates("", handles).await;
+
+    assert!(matches!(banner.update_status, UpdateStatus::Unknown));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test return value of good url to needs_update
+async fn banner_needs_update_returns_up_to_date() {
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/latest");
+        then.status(200).body("{\"tag_name\":\"v1.1.0\"}");
+    });
+    let scans = Arc::new(FeroxScans::default());
+
+    let handles = Arc::new(Handles::for_testing(Some(scans), None).0);
+
+    let mut banner = Banner::new(&[srv.url("")], &Configuration::new().unwrap());
+    banner.version = String::from("1.1.0");
+
+    let _ = banner.check_for_updates(&srv.url("/latest"), handles).await;
+
+    assert_eq!(mock.hits(), 1);
+    assert!(matches!(banner.update_status, UpdateStatus::UpToDate));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test return value of good url to needs_update that returns a newer version than current
+async fn banner_needs_update_returns_out_of_date() {
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/latest");
+        then.status(200).body("{\"tag_name\":\"v1.1.0\"}");
+    });
+
+    let scans = Arc::new(FeroxScans::default());
+
+    let handles = Arc::new(Handles::for_testing(Some(scans), None).0);
+
+    let mut banner = Banner::new(&[srv.url("")], &Configuration::new().unwrap());
+    banner.version = String::from("1.0.1");
+
+    let _ = banner.check_for_updates(&srv.url("/latest"), handles).await;
+
+    assert_eq!(mock.hits(), 1);
+    assert!(matches!(banner.update_status, UpdateStatus::OutOfDate));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test return value of good url that times out
+async fn banner_needs_update_returns_unknown_on_timeout() {
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/latest");
+        then.status(200)
+            .body("{\"tag_name\":\"v1.1.0\"}")
+            .delay(Duration::from_secs(8));
+    });
+
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let mut banner = Banner::new(&[srv.url("")], &Configuration::new().unwrap());
+
+    let _ = banner.check_for_updates(&srv.url("/latest"), handles).await;
+
+    assert_eq!(mock.hits(), 1);
+    assert!(matches!(banner.update_status, UpdateStatus::Unknown));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test return value of good url with bad json response
+async fn banner_needs_update_returns_unknown_on_bad_json_response() {
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/latest");
+        then.status(200).body("not json");
+    });
+
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let mut banner = Banner::new(&[srv.url("")], &Configuration::new().unwrap());
+
+    let _ = banner.check_for_updates(&srv.url("/latest"), handles).await;
+
+    assert_eq!(mock.hits(), 1);
+    assert!(matches!(banner.update_status, UpdateStatus::Unknown));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test return value of good url with json response that lacks the tag_name field
+async fn banner_needs_update_returns_unknown_on_json_without_correct_tag() {
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/latest");
+        then.status(200)
+            .body("{\"no tag_name\": \"doesn't exist\"}");
+    });
+
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let mut banner = Banner::new(&[srv.url("")], &Configuration::new().unwrap());
+    banner.version = String::from("1.0.1");
+
+    let _ = banner.check_for_updates(&srv.url("/latest"), handles).await;
+
+    assert_eq!(mock.hits(), 1);
+    assert!(matches!(banner.update_status, UpdateStatus::Unknown));
+}
--- a/src/client.rs
+++ b/src/client.rs
@@ -1,10 +1,8 @@
-use crate::utils::{module_colorizer, status_colorizer};
+use anyhow::Result;
 use reqwest::header::HeaderMap;
 use reqwest::{redirect::Policy, Client, Proxy};
 use std::collections::HashMap;
 use std::convert::TryInto;
-#[cfg(not(test))]
-use std::process::exit;
 use std::time::Duration;

 /// Create and return an instance of [reqwest::Client](https://docs.rs/reqwest/latest/reqwest/struct.Client.html)
@@ -15,68 +13,32 @@ pub fn initialize(
    insecure: bool,
    headers: &HashMap<String, String>,
    proxy: Option<&str>,
-) -> Client {
+) -> Result<Client> {
    let policy = if redirects {
        Policy::limited(10)
    } else {
        Policy::none()
    };

-    // try_into returns infallible as its error, unwrap is safe here
-    let header_map: HeaderMap = headers.try_into().unwrap();
+    let header_map: HeaderMap = headers.try_into()?;

    let client = Client::builder()
        .timeout(Duration::new(timeout, 0))
        .user_agent(user_agent)
        .danger_accept_invalid_certs(insecure)
        .default_headers(header_map)
-        .redirect(policy);
+        .redirect(policy)
+        .http1_title_case_headers();

-    let client = match proxy {
-        // a proxy is specified, need to add it to the client
-        Some(some_proxy) => {
-            if !some_proxy.is_empty() {
-                // it's not an empty string
-                match Proxy::all(some_proxy) {
-                    Ok(proxy_obj) => client.proxy(proxy_obj),
-                    Err(e) => {
-                        eprintln!(
-                            "{} {} {}",
-                            status_colorizer("ERROR"),
-                            module_colorizer("Client::initialize"),
-                            e
-                        );
-
-                        #[cfg(test)]
-                        panic!();
-                        #[cfg(not(test))]
-                        exit(1);
-                    }
-                }
-            } else {
-                client // Some("") was used?
-            }
-        }
-        // no proxy specified
-        None => client,
-    };
-
-    match client.build() {
-        Ok(client) => client,
-        Err(e) => {
-            eprintln!(
-                "{} {} {}",
-                status_colorizer("ERROR"),
-                module_colorizer("Client::build"),
-                e
-            );
-
-            #[cfg(test)]
-            panic!();
-            #[cfg(not(test))]
-            exit(1);
+    if let Some(some_proxy) = proxy {
+        if !some_proxy.is_empty() {
+            // it's not an empty string; set the proxy
+            let proxy_obj = Proxy::all(some_proxy)?;
+            return Ok(client.proxy(proxy_obj).build()?);
        }
    }
+
+    Ok(client.build()?)
 }

 #[cfg(test)]
@@ -88,7 +50,7 @@ mod tests {
    /// create client with a bad proxy, expect panic
    fn client_with_bad_proxy() {
        let headers = HashMap::new();
-        initialize(0, "stuff", true, false, &headers, Some("not a valid proxy"));
+        initialize(0, "stuff", true, false, &headers, Some("not a valid proxy")).unwrap();
    }

    #[test]
@@ -96,6 +58,6 @@ mod tests {
    fn client_with_good_proxy() {
        let headers = HashMap::new();
        let proxy = "http://127.0.0.1:8080";
-        initialize(0, "stuff", true, true, &headers, Some(proxy));
+        initialize(0, "stuff", true, true, &headers, Some(proxy)).unwrap();
    }
 }
--- a/src/config/container.rs
+++ b/src/config/container.rs
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -0,0 +1,9 @@
+//! all logic related to instantiating a running configuration
+
+mod container;
+mod utils;
+#[cfg(test)]
+mod tests;
+
+pub use self::container::Configuration;
+pub use self::utils::{determine_output_level, OutputLevel, RequesterPolicy};
--- a/src/config/tests.rs
+++ b/src/config/tests.rs
@@ -0,0 +1,506 @@
+use super::utils::*;
+use super::*;
+use crate::{traits::FeroxSerialize, DEFAULT_CONFIG_NAME};
+use regex::Regex;
+use reqwest::Url;
+use std::{collections::HashMap, fs::write};
+use tempfile::TempDir;
+
+/// creates a dummy configuration file for testing
+fn setup_config_test() -> Configuration {
+    let data = r#"
+            wordlist = "/some/path"
+            status_codes = [201, 301, 401]
+            replay_codes = [201, 301]
+            threads = 40
+            timeout = 5
+            proxy = "http://127.0.0.1:8080"
+            replay_proxy = "http://127.0.0.1:8081"
+            quiet = true
+            silent = true
+            auto_tune = true
+            auto_bail = true
+            verbosity = 1
+            scan_limit = 6
+            parallel = 14
+            rate_limit = 250
+            time_limit = "10m"
+            output = "/some/otherpath"
+            debug_log = "/yet/anotherpath"
+            resume_from = "/some/state/file"
+            redirects = true
+            insecure = true
+            collect_backups = true
+            collect_extensions = true
+            collect_words = true
+            extensions = ["html", "php", "js"]
+            dont_collect = ["png", "gif", "jpg", "jpeg"]
+            methods = ["GET", "PUT", "DELETE"]
+            data = [31, 32, 33, 34]
+            url_denylist = ["http://dont-scan.me", "https://also-not.me"]
+            regex_denylist = ["/deny.*"]
+            headers = {stuff = "things", mostuff = "mothings"}
+            queries = [["name","value"], ["rick", "astley"]]
+            no_recursion = true
+            add_slash = true
+            stdin = true
+            dont_filter = true
+            extract_links = true
+            json = true
+            save_state = false
+            depth = 1
+            force_recursion = true
+            filter_size = [4120]
+            filter_regex = ["^ignore me$"]
+            filter_similar = ["https://somesite.com/soft404"]
+            filter_word_count = [994, 992]
+            filter_line_count = [34]
+            filter_status = [201]
+        "#;
+    let tmp_dir = TempDir::new().unwrap();
+    let file = tmp_dir.path().join(DEFAULT_CONFIG_NAME);
+    write(&file, data).unwrap();
+    Configuration::parse_config(file).unwrap()
+}
+
+#[test]
+/// test that all default config values meet expectations
+fn default_configuration() {
+    let config = Configuration::default();
+    assert_eq!(config.wordlist, wordlist());
+    assert_eq!(config.proxy, String::new());
+    assert_eq!(config.target_url, String::new());
+    assert_eq!(config.time_limit, String::new());
+    assert_eq!(config.resume_from, String::new());
+    assert_eq!(config.debug_log, String::new());
+    assert_eq!(config.config, String::new());
+    assert_eq!(config.replay_proxy, String::new());
+    assert_eq!(config.status_codes, status_codes());
+    assert_eq!(config.replay_codes, config.status_codes);
+    assert!(config.replay_client.is_none());
+    assert_eq!(config.threads, threads());
+    assert_eq!(config.depth, depth());
+    assert_eq!(config.timeout, timeout());
+    assert_eq!(config.verbosity, 0);
+    assert_eq!(config.scan_limit, 0);
+    assert!(!config.silent);
+    assert!(!config.quiet);
+    assert_eq!(config.output_level, OutputLevel::Default);
+    assert!(!config.dont_filter);
+    assert!(!config.auto_tune);
+    assert!(!config.auto_bail);
+    assert_eq!(config.requester_policy, RequesterPolicy::Default);
+    assert!(!config.no_recursion);
+    assert!(!config.random_agent);
+    assert!(!config.json);
+    assert!(config.save_state);
+    assert!(!config.stdin);
+    assert!(!config.add_slash);
+    assert!(!config.force_recursion);
+    assert!(!config.redirects);
+    assert!(!config.extract_links);
+    assert!(!config.insecure);
+    assert!(!config.collect_extensions);
+    assert!(!config.collect_backups);
+    assert!(!config.collect_words);
+    assert!(config.regex_denylist.is_empty());
+    assert_eq!(config.queries, Vec::new());
+    assert_eq!(config.filter_size, Vec::<u64>::new());
+    assert_eq!(config.extensions, Vec::<String>::new());
+    assert_eq!(config.methods, vec!["GET"]);
+    assert_eq!(config.data, Vec::<u8>::new());
+    assert_eq!(config.url_denylist, Vec::<Url>::new());
+    assert_eq!(config.dont_collect, ignored_extensions());
+    assert_eq!(config.filter_regex, Vec::<String>::new());
+    assert_eq!(config.filter_similar, Vec::<String>::new());
+    assert_eq!(config.filter_word_count, Vec::<usize>::new());
+    assert_eq!(config.filter_line_count, Vec::<usize>::new());
+    assert_eq!(config.filter_status, Vec::<u16>::new());
+    assert_eq!(config.headers, HashMap::new());
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_wordlist() {
+    let config = setup_config_test();
+    assert_eq!(config.wordlist, "/some/path");
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_debug_log() {
+    let config = setup_config_test();
+    assert_eq!(config.debug_log, "/yet/anotherpath");
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_status_codes() {
+    let config = setup_config_test();
+    assert_eq!(config.status_codes, vec![201, 301, 401]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_replay_codes() {
+    let config = setup_config_test();
+    assert_eq!(config.replay_codes, vec![201, 301]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_threads() {
+    let config = setup_config_test();
+    assert_eq!(config.threads, 40);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_depth() {
+    let config = setup_config_test();
+    assert_eq!(config.depth, 1);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_scan_limit() {
+    let config = setup_config_test();
+    assert_eq!(config.scan_limit, 6);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_parallel() {
+    let config = setup_config_test();
+    assert_eq!(config.parallel, 14);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_rate_limit() {
+    let config = setup_config_test();
+    assert_eq!(config.rate_limit, 250);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_timeout() {
+    let config = setup_config_test();
+    assert_eq!(config.timeout, 5);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_proxy() {
+    let config = setup_config_test();
+    assert_eq!(config.proxy, "http://127.0.0.1:8080");
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_replay_proxy() {
+    let config = setup_config_test();
+    assert_eq!(config.replay_proxy, "http://127.0.0.1:8081");
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_silent() {
+    let config = setup_config_test();
+    assert!(config.silent);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_force_recursion() {
+    let config = setup_config_test();
+    assert!(config.force_recursion);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_quiet() {
+    let config = setup_config_test();
+    assert!(config.quiet);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_json() {
+    let config = setup_config_test();
+    assert!(config.json);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_auto_bail() {
+    let config = setup_config_test();
+    assert!(config.auto_bail);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_auto_tune() {
+    let config = setup_config_test();
+    assert!(config.auto_tune);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_verbosity() {
+    let config = setup_config_test();
+    assert_eq!(config.verbosity, 1);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_output() {
+    let config = setup_config_test();
+    assert_eq!(config.output, "/some/otherpath");
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_redirects() {
+    let config = setup_config_test();
+    assert!(config.redirects);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_insecure() {
+    let config = setup_config_test();
+    assert!(config.insecure);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_no_recursion() {
+    let config = setup_config_test();
+    assert!(config.no_recursion);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_stdin() {
+    let config = setup_config_test();
+    assert!(config.stdin);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_dont_filter() {
+    let config = setup_config_test();
+    assert!(config.dont_filter);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_add_slash() {
+    let config = setup_config_test();
+    assert!(config.add_slash);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_extract_links() {
+    let config = setup_config_test();
+    assert!(config.extract_links);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_collect_extensions() {
+    let config = setup_config_test();
+    assert!(config.collect_extensions);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_collect_backups() {
+    let config = setup_config_test();
+    assert!(config.collect_backups);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_collect_words() {
+    let config = setup_config_test();
+    assert!(config.collect_words);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_extensions() {
+    let config = setup_config_test();
+    assert_eq!(config.extensions, vec!["html", "php", "js"]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_dont_collect() {
+    let config = setup_config_test();
+    assert_eq!(config.dont_collect, vec!["png", "gif", "jpg", "jpeg"]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_methods() {
+    let config = setup_config_test();
+    assert_eq!(config.methods, vec!["GET", "PUT", "DELETE"]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_data() {
+    let config = setup_config_test();
+    assert_eq!(config.data, vec![31, 32, 33, 34]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_regex_denylist() {
+    let config = setup_config_test();
+    assert_eq!(
+        config.regex_denylist[0].as_str(),
+        Regex::new("/deny.*").unwrap().as_str()
+    );
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_url_denylist() {
+    let config = setup_config_test();
+    assert_eq!(
+        config.url_denylist,
+        vec![
+            Url::parse("http://dont-scan.me").unwrap(),
+            Url::parse("https://also-not.me").unwrap(),
+        ]
+    );
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_filter_regex() {
+    let config = setup_config_test();
+    assert_eq!(config.filter_regex, vec!["^ignore me$"]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_filter_similar() {
+    let config = setup_config_test();
+    assert_eq!(config.filter_similar, vec!["https://somesite.com/soft404"]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_filter_size() {
+    let config = setup_config_test();
+    assert_eq!(config.filter_size, vec![4120]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_filter_word_count() {
+    let config = setup_config_test();
+    assert_eq!(config.filter_word_count, vec![994, 992]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_filter_line_count() {
+    let config = setup_config_test();
+    assert_eq!(config.filter_line_count, vec![34]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_filter_status() {
+    let config = setup_config_test();
+    assert_eq!(config.filter_status, vec![201]);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_save_state() {
+    let config = setup_config_test();
+    assert!(!config.save_state);
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_time_limit() {
+    let config = setup_config_test();
+    assert_eq!(config.time_limit, "10m");
+}
+
+#[test]
+/// parse the test config and see that the value parsed is correct
+fn config_reads_resume_from() {
+    let config = setup_config_test();
+    assert_eq!(config.resume_from, "/some/state/file");
+}
+
+#[test]
+/// parse the test config and see that the values parsed are correct
+fn config_reads_headers() {
+    let config = setup_config_test();
+    let mut headers = HashMap::new();
+    headers.insert("stuff".to_string(), "things".to_string());
+    headers.insert("mostuff".to_string(), "mothings".to_string());
+    assert_eq!(config.headers, headers);
+}
+
+#[test]
+/// parse the test config and see that the values parsed are correct
+fn config_reads_queries() {
+    let config = setup_config_test();
+    let queries = vec![
+        ("name".to_string(), "value".to_string()),
+        ("rick".to_string(), "astley".to_string()),
+    ];
+    assert_eq!(config.queries, queries);
+}
+
+#[test]
+fn config_default_not_random_agent() {
+    let config = setup_config_test();
+    assert!(!config.random_agent);
+}
+
+#[test]
+#[should_panic]
+/// test that an error message is printed and panic is called when report_and_exit is called
+fn config_report_and_exit_works() {
+    report_and_exit("some message");
+}
+
+#[test]
+/// test as_str method of Configuration
+fn as_str_returns_string_with_newline() {
+    let config = Configuration::new().unwrap();
+    let config_str = config.as_str();
+    println!("{}", config_str);
+    assert!(config_str.starts_with("Configuration {"));
+    assert!(config_str.ends_with("}\n"));
+    assert!(config_str.contains("replay_codes:"));
+    assert!(config_str.contains("client: Client {"));
+    assert!(config_str.contains("user_agent: \"feroxbuster"));
+}
+
+#[test]
+/// test as_json method of Configuration
+fn as_json_returns_json_representation_of_configuration_with_newline() {
+    let mut config = Configuration::new().unwrap();
+    config.timeout = 12;
+    config.depth = 2;
+    let config_str = config.as_json().unwrap();
+    let json: Configuration = serde_json::from_str(&config_str).unwrap();
+    assert_eq!(json.config, config.config);
+    assert_eq!(json.wordlist, config.wordlist);
+    assert_eq!(json.replay_codes, config.replay_codes);
+    assert_eq!(json.timeout, config.timeout);
+    assert_eq!(json.depth, config.depth);
+}
--- a/src/config/utils.rs
+++ b/src/config/utils.rs
@@ -0,0 +1,195 @@
+use crate::{
+    utils::{module_colorizer, status_colorizer},
+    DEFAULT_IGNORED_EXTENSIONS, DEFAULT_METHOD, DEFAULT_STATUS_CODES, DEFAULT_WORDLIST, VERSION,
+};
+#[cfg(not(test))]
+use std::process::exit;
+
+/// simple helper to clean up some code reuse below; panics under test / exits in prod
+pub(super) fn report_and_exit(err: &str) -> ! {
+    eprintln!(
+        "{} {}: {}",
+        status_colorizer("ERROR"),
+        module_colorizer("Configuration::new"),
+        err
+    );
+
+    #[cfg(test)]
+    panic!();
+    #[cfg(not(test))]
+    exit(1);
+}
+
+// functions timeout, threads, status_codes, user_agent, wordlist, save_state, and depth are used to provide
+// defaults in the event that a ferox-config.toml is found but one or more of the values below
+// aren't listed in the config.  This way, we get the correct defaults upon Deserialization
+
+/// default Configuration type for use in json output
+pub(super) fn serialized_type() -> String {
+    String::from("configuration")
+}
+
+/// default timeout value
+pub(super) fn timeout() -> u64 {
+    7
+}
+
+/// default save_state value
+pub(super) fn save_state() -> bool {
+    true
+}
+
+/// default threads value
+pub(super) fn threads() -> usize {
+    50
+}
+
+/// default status codes
+pub(super) fn status_codes() -> Vec<u16> {
+    DEFAULT_STATUS_CODES
+        .iter()
+        .map(|code| code.as_u16())
+        .collect()
+}
+
+/// default HTTP Method
+pub(super) fn methods() -> Vec<String> {
+    vec![DEFAULT_METHOD.to_owned()]
+}
+
+/// default extensions to ignore while auto-collecting
+pub(super) fn ignored_extensions() -> Vec<String> {
+    DEFAULT_IGNORED_EXTENSIONS
+        .iter()
+        .map(|s| s.to_string())
+        .collect()
+}
+
+/// default wordlist
+pub(super) fn wordlist() -> String {
+    String::from(DEFAULT_WORDLIST)
+}
+
+/// default user-agent
+pub(super) fn user_agent() -> String {
+    format!("feroxbuster/{}", VERSION)
+}
+
+/// default recursion depth
+pub(super) fn depth() -> usize {
+    4
+}
+
+/// enum representing the three possible states for informational output (not logging verbosity)
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+pub enum OutputLevel {
+    /// normal scan, no --quiet|--silent
+    Default,
+
+    /// quiet scan, print some information, but not all (new in versions >= 2.0.0)
+    Quiet,
+
+    /// silent scan, only print urls (used to be --quiet in versions 1.x.x)
+    Silent,
+}
+
+/// implement a default for OutputLevel
+impl Default for OutputLevel {
+    /// return Default
+    fn default() -> Self {
+        Self::Default
+    }
+}
+
+/// given the current settings for quiet and silent, determine output_level (DRY helper)
+pub fn determine_output_level(quiet: bool, silent: bool) -> OutputLevel {
+    if quiet && silent {
+        // user COULD have both as true in config file, take the more quiet of the two
+        OutputLevel::Silent
+    } else if quiet {
+        OutputLevel::Quiet
+    } else if silent {
+        OutputLevel::Silent
+    } else {
+        OutputLevel::Default
+    }
+}
+
+/// represents actions the Requester should take in certain situations
+#[derive(Debug, PartialEq, Eq, Copy, Clone)]
+pub enum RequesterPolicy {
+    /// automatically try to lower request rate in order to reduce errors
+    AutoTune,
+
+    /// automatically bail at certain error thresholds
+    AutoBail,
+
+    /// just let that junk run super natural
+    Default,
+}
+
+/// default implementation for RequesterPolicy
+impl Default for RequesterPolicy {
+    /// Default as default
+    fn default() -> Self {
+        Self::Default
+    }
+}
+
+/// given the current settings for quiet and silent, determine output_level (DRY helper)
+pub fn determine_requester_policy(auto_tune: bool, auto_bail: bool) -> RequesterPolicy {
+    if auto_tune && auto_bail {
+        // user COULD have both as true in config file, take the more aggressive of the two
+        RequesterPolicy::AutoBail
+    } else if auto_tune {
+        RequesterPolicy::AutoTune
+    } else if auto_bail {
+        RequesterPolicy::AutoBail
+    } else {
+        RequesterPolicy::Default
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    /// test determine_output_level returns higher of the two levels if both given values are true
+    fn determine_output_level_returns_correct_results() {
+        let mut level = determine_output_level(true, true);
+        assert_eq!(level, OutputLevel::Silent);
+
+        level = determine_output_level(false, true);
+        assert_eq!(level, OutputLevel::Silent);
+
+        level = determine_output_level(false, false);
+        assert_eq!(level, OutputLevel::Default);
+
+        level = determine_output_level(true, false);
+        assert_eq!(level, OutputLevel::Quiet);
+    }
+
+    #[test]
+    /// test determine_requester_policy returns higher of the two levels if both given values are true
+    fn determine_requester_policy_returns_correct_results() {
+        let mut level = determine_requester_policy(true, true);
+        assert_eq!(level, RequesterPolicy::AutoBail);
+
+        level = determine_requester_policy(false, true);
+        assert_eq!(level, RequesterPolicy::AutoBail);
+
+        level = determine_requester_policy(false, false);
+        assert_eq!(level, RequesterPolicy::Default);
+
+        level = determine_requester_policy(true, false);
+        assert_eq!(level, RequesterPolicy::AutoTune);
+    }
+
+    #[test]
+    #[should_panic]
+    /// report_and_exit should panic/exit when called
+    fn report_and_exit_panics_under_test() {
+        report_and_exit("test");
+    }
+}
--- a/src/event_handlers/command.rs
+++ b/src/event_handlers/command.rs
@@ -0,0 +1,86 @@
+use std::sync::Arc;
+
+use reqwest::StatusCode;
+use tokio::sync::oneshot::Sender;
+
+use crate::response::FeroxResponse;
+use crate::{
+    event_handlers::Handles,
+    message::FeroxMessage,
+    statistics::{StatError, StatField},
+    traits::FeroxFilter,
+};
+
+/// Protocol definition for updating an event handler via mpsc
+#[derive(Debug)]
+pub enum Command {
+    /// Add one to the total number of requests
+    AddRequest,
+
+    /// Add one to the proper field(s) based on the given `StatError`
+    AddError(StatError),
+
+    /// Add one to the proper field(s) based on the given `StatusCode`
+    AddStatus(StatusCode),
+
+    /// Create the progress bar (`BarType::Total`) that is updated from the stats thread
+    CreateBar,
+
+    /// Add to a `Stats` field that corresponds to the given `StatField` by the given `usize` value
+    AddToUsizeField(StatField, usize),
+
+    /// Subtract from a `Stats` field that corresponds to the given `StatField` by the given `usize` value
+    SubtractFromUsizeField(StatField, usize),
+
+    /// Update a `Stats` field that corresponds to the given `StatField` by the given `f64` value
+    AddToF64Field(StatField, f64),
+
+    /// Save a `Stats` object to disk using `reporter::get_cached_file_handle`
+    Save,
+
+    /// Load a `Stats` object from disk
+    LoadStats(String),
+
+    /// Add a `FeroxFilter` implementor to `FilterHandler`'s instance of `FeroxFilters`
+    AddFilter(Box<dyn FeroxFilter>),
+
+    /// Remove a set of `FeroxFilter` implementors from `FeroxFilters` by index
+    RemoveFilters(Vec<usize>),
+
+    /// Send a `FeroxResponse` to the output handler for reporting
+    Report(Box<FeroxResponse>),
+
+    /// Send a group of urls to be scanned (only used for the urls passed in explicitly by the user)
+    ScanInitialUrls(Vec<String>),
+
+    /// Send a single url to be scanned (presumably added from the interactive menu)
+    ScanNewUrl(String),
+
+    /// Determine whether or not recursion is appropriate, given a FeroxResponse, if so start a scan
+    TryRecursion(Box<FeroxResponse>),
+
+    /// Send a pointer to the wordlist to the recursion handler
+    UpdateWordlist(Arc<Vec<String>>),
+
+    /// Instruct the ScanHandler to join on all known scans, use sender to notify main when done
+    JoinTasks(Sender<bool>),
+
+    /// Command used to test that a spawned task succeeded in initialization
+    Ping,
+
+    /// Just receive a sender and reply, used for slowing down the main thread
+    Sync(Sender<bool>),
+
+    /// Notify event handler that a new extension has been seen
+    AddDiscoveredExtension(String),
+
+    /// Write an arbitrary string to disk
+    WriteToDisk(Box<FeroxMessage>),
+
+    /// Break out of the (infinite) mpsc receive loop
+    Exit,
+
+    /// Give a handler access to an Arc<Handles> instance after the handler has
+    /// already been initialized
+    AddHandles(Arc<Handles>),
+}
--- a/src/event_handlers/container.rs
+++ b/src/event_handlers/container.rs
@@ -0,0 +1,182 @@
+use super::*;
+use crate::config::Configuration;
+use crate::event_handlers::scans::ScanHandle;
+use crate::scan_manager::FeroxScans;
+use crate::Joiner;
+#[cfg(test)]
+use crate::{filters::FeroxFilters, statistics::Stats, Command};
+use anyhow::{bail, Result};
+use std::collections::HashSet;
+use std::sync::{Arc, RwLock};
+#[cfg(test)]
+use tokio::sync::mpsc::{self, UnboundedReceiver};
+
+#[derive(Debug)]
+/// Simple container for multiple JoinHandles
+pub struct Tasks {
+    /// JoinHandle for terminal handler
+    pub terminal: Joiner,
+
+    /// JoinHandle for statistics handler
+    pub stats: Joiner,
+
+    /// JoinHandle for filters handler
+    pub filters: Joiner,
+
+    /// JoinHandle for scans handler
+    pub scans: Joiner,
+}
+
+/// Tasks implementation
+impl Tasks {
+    /// Given JoinHandles for terminal, statistics, and filters create a new Tasks object
+    pub fn new(terminal: Joiner, stats: Joiner, filters: Joiner, scans: Joiner) -> Self {
+        Self {
+            terminal,
+            stats,
+            filters,
+            scans,
+        }
+    }
+}
+
+#[derive(Debug)]
+/// Container for the different *Handles that will be shared across modules
+pub struct Handles {
+    /// Handle for statistics
+    pub stats: StatsHandle,
+
+    /// Handle for filters
+    pub filters: FiltersHandle,
+
+    /// Handle for output (terminal/file)
+    pub output: TermOutHandle,
+
+    /// Handle for Configuration
+    pub config: Arc<Configuration>,
+
+    /// Handle for recursion
+    pub scans: RwLock<Option<ScanHandle>>,
+
+    /// Pointer to the list of words generated from reading in the wordlist
+    pub wordlist: Arc<Vec<String>>,
+}
+
+/// implementation of Handles
+impl Handles {
+    /// Given a StatsHandle, FiltersHandle, and OutputHandle, create a Handles object
+    pub fn new(
+        stats: StatsHandle,
+        filters: FiltersHandle,
+        output: TermOutHandle,
+        config: Arc<Configuration>,
+        wordlist: Arc<Vec<String>>,
+    ) -> Self {
+        Self {
+            stats,
+            filters,
+            output,
+            config,
+            scans: RwLock::new(None),
+            wordlist,
+        }
+    }
+
+    /// create a Handles object suitable for unit testing (non-functional)
+    #[cfg(test)]
+    pub fn for_testing(
+        scanned_urls: Option<Arc<FeroxScans>>,
+        config: Option<Arc<Configuration>>,
+    ) -> (Self, UnboundedReceiver<Command>) {
+        let configuration = config.unwrap_or_else(|| Arc::new(Configuration::new().unwrap()));
+        let (tx, rx) = mpsc::unbounded_channel::<Command>();
+        let terminal_handle = TermOutHandle::new(tx.clone(), tx.clone());
+        let stats_handle = StatsHandle::new(Arc::new(Stats::new(configuration.json)), tx.clone());
+        let filters_handle = FiltersHandle::new(Arc::new(FeroxFilters::default()), tx.clone());
+        let wordlist = Arc::new(vec![String::from("this_is_a_test")]);
+        let handles = Self::new(
+            stats_handle,
+            filters_handle,
+            terminal_handle,
+            configuration,
+            wordlist,
+        );
+        if let Some(sh) = scanned_urls {
+            let scan_handle = ScanHandle::new(sh, tx);
+            handles.set_scan_handle(scan_handle);
+        }
+        (handles, rx)
+    }
+
+    /// Set the ScanHandle object
+    pub fn set_scan_handle(&self, handle: ScanHandle) {
+        if let Ok(mut guard) = self.scans.write() {
+            if guard.is_none() {
+                let _ = std::mem::replace(&mut *guard, Some(handle));
+            }
+        }
+    }
+
+    /// Helper to easily send a Command over the (locked) underlying CommandSender object
+    pub fn send_scan_command(&self, command: Command) -> Result<()> {
+        if let Ok(guard) = self.scans.read().as_ref() {
+            if let Some(handle) = guard.as_ref() {
+                handle.send(command)?;
+                return Ok(());
+            }
+        }
+
+        bail!("Could not get underlying CommandSender object")
+    }
+
+    /// wrapper to reach into `FeroxScans` and yank out the length of `collected_extensions`
+    pub fn num_collected_extensions(&self) -> usize {
+        if !self.config.collect_extensions {
+            // if --collect-extensions wasn't used, simply return 0 and forego unlocking
+            return 0;
+        }
+
+        self.collected_extensions().len()
+    }
+
+    /// wrapper to reach into `FeroxScans` and yank out the length of `collected_extensions`
+    pub fn collected_extensions(&self) -> HashSet<String> {
+        if let Ok(scans) = self.ferox_scans() {
+            if let Ok(extensions) = scans.collected_extensions.read() {
+                return extensions.clone();
+            }
+        }
+
+        HashSet::new()
+    }
+
+    /// number of words in the wordlist, multiplied by `expected_num_requests_multiplier`
+    pub fn expected_num_requests_per_dir(&self) -> usize {
+        let num_words = self.wordlist.len();
+        let multiplier = self.expected_num_requests_multiplier();
+        multiplier * num_words
+    }
+
+    /// number of extensions plus the number of request method types plus any dynamically collected
+    /// extensions
+    pub fn expected_num_requests_multiplier(&self) -> usize {
+        let multiplier = self.config.extensions.len()
+            + self.config.methods.len()
+            + self.num_collected_extensions();
+
+        // methods should always have at least 1 member, likely making this .max call unneeded
+        // but leaving it for 'just in case' reasons
+        multiplier.max(1)
+    }
+
+    /// Helper to easily get the (locked) underlying FeroxScans object
+    pub fn ferox_scans(&self) -> Result<Arc<FeroxScans>> {
+        if let Ok(guard) = self.scans.read().as_ref() {
+            if let Some(handle) = guard.as_ref() {
+                return Ok(handle.data.clone());
+            }
+        }
+
+        bail!("Could not get underlying FeroxScans")
+    }
+}
--- a/src/event_handlers/filters.rs
+++ b/src/event_handlers/filters.rs
@@ -0,0 +1,144 @@
+use super::*;
+use crate::filters::EmptyFilter;
+use crate::{filters::FeroxFilters, CommandSender, FeroxChannel, Joiner};
+use anyhow::Result;
+use std::sync::Arc;
+use tokio::sync::{
+    mpsc::{self, UnboundedReceiver},
+    oneshot,
+};
+
+#[derive(Debug)]
+/// Container for filters transmitter and FeroxFilters object
+pub struct FiltersHandle {
+    /// FeroxFilters object used across modules to track active filters
+    pub data: Arc<FeroxFilters>,
+
+    /// transmitter used to update `data`
+    pub tx: CommandSender,
+}
+
+/// implementation of FiltersHandle
+impl FiltersHandle {
+    /// Given an Arc-wrapped FeroxFilters and CommandSender, create a new FiltersHandle
+    pub fn new(data: Arc<FeroxFilters>, tx: CommandSender) -> Self {
+        Self { data, tx }
+    }
+
+    /// Send the given Command over `tx`
+    pub fn send(&self, command: Command) -> Result<()> {
+        self.tx.send(command)?;
+        Ok(())
+    }
+
+    /// Sync the handle with the handler
+    pub async fn sync(&self) -> Result<()> {
+        let (tx, rx) = oneshot::channel::<bool>();
+        self.send(Command::Sync(tx))?;
+        rx.await?;
+        Ok(())
+    }
+}
+
+/// event handler for updating a single data structure of all active filters
+#[derive(Debug)]
+pub struct FiltersHandler {
+    /// collection of FeroxFilters
+    data: Arc<FeroxFilters>,
+
+    /// Receiver half of mpsc from which `Command`s are processed
+    receiver: UnboundedReceiver<Command>,
+}
+
+/// implementation of event handler for filters
+impl FiltersHandler {
+    /// create new event handler
+    pub fn new(data: Arc<FeroxFilters>, receiver: UnboundedReceiver<Command>) -> Self {
+        Self { data, receiver }
+    }
+
+    /// Initialize new `FeroxFilters` and the sc side of an mpsc channel that is responsible for
+    /// updates to the aforementioned object.
+    pub fn initialize() -> (Joiner, FiltersHandle) {
+        log::trace!("enter: initialize");
+
+        let data = Arc::new(FeroxFilters::default());
+        let (tx, rx): FeroxChannel<Command> = mpsc::unbounded_channel();
+
+        let mut handler = Self::new(data.clone(), rx);
+
+        let task = tokio::spawn(async move { handler.start().await });
+
+        let event_handle = FiltersHandle::new(data, tx);
+
+        log::trace!("exit: initialize -> ({:?}, {:?})", task, event_handle);
+
+        (task, event_handle)
+    }
+
+    /// Start a single consumer task (sc side of mpsc)
+    ///
+    /// The consumer simply receives `Command` and acts accordingly
+    pub async fn start(&mut self) -> Result<()> {
+        log::trace!("enter: start({:?})", self);
+
+        while let Some(command) = self.receiver.recv().await {
+            match command {
+                Command::AddFilter(filter) => {
+                    if filter.as_any().downcast_ref::<EmptyFilter>().is_none() {
+                        // don't add an empty filter
+                        self.data.push(filter)?;
+                    }
+                }
+                Command::RemoveFilters(mut indices) => self.data.remove(&mut indices),
+                Command::Sync(sender) => {
+                    log::debug!("filters: {:?}", self);
+                    sender.send(true).unwrap_or_default();
+                }
+                Command::Exit => break,
+                _ => {} // no other commands needed for FilterHandler
+            }
+        }
+
+        log::trace!("exit: start");
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::filters::WordsFilter;
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+    async fn empty_filter_skipped() {
+        let data = Arc::new(FeroxFilters::default());
+        let (tx, rx): FeroxChannel<Command> = mpsc::unbounded_channel();
+
+        let mut handler = FiltersHandler::new(data.clone(), rx);
+
+        let event_handle = FiltersHandle::new(data, tx);
+
+        let _task = tokio::spawn(async move { handler.start().await });
+
+        event_handle
+            .send(Command::AddFilter(Box::new(EmptyFilter {})))
+            .unwrap();
+
+        let (tx, rx) = oneshot::channel::<bool>();
+        event_handle.send(Command::Sync(tx)).unwrap();
+        rx.await.unwrap();
+
+        assert!(event_handle.data.filters.read().unwrap().is_empty());
+
+        event_handle
+            .send(Command::AddFilter(Box::new(WordsFilter { word_count: 1 })))
+            .unwrap();
+
+        let (tx, rx) = oneshot::channel::<bool>();
+        event_handle.send(Command::Sync(tx)).unwrap();
+        rx.await.unwrap();
+
+        assert_eq!(event_handle.data.filters.read().unwrap().len(), 1);
+    }
+}
--- a/src/event_handlers/inputs.rs
+++ b/src/event_handlers/inputs.rs
@@ -0,0 +1,148 @@
+use super::*;
+use crate::{
+    progress::PROGRESS_PRINTER,
+    scan_manager::{FeroxState, PAUSE_SCAN},
+    scanner::RESPONSES,
+    statistics::StatError,
+    utils::slugify_filename,
+    utils::{open_file, write_to},
+    SLEEP_DURATION,
+};
+use anyhow::Result;
+use console::style;
+use crossterm::event::{self, Event, KeyCode};
+use std::{
+    sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc,
+    },
+    thread::sleep,
+    time::Duration,
+};
+
+/// Atomic boolean flag, used to determine whether or not the terminal input handler should exit
+pub static SCAN_COMPLETE: AtomicBool = AtomicBool::new(false);
+
+/// Container for filters transmitter and FeroxFilters object
+pub struct TermInputHandler {
+    /// handles to other handlers
+    handles: Arc<Handles>,
+}
+
+/// implementation of event handler for terminal input
+///
+/// kicks off the following handlers related to terminal input:
+///     ctrl+c handler that saves scan state to disk
+///     enter handler that listens for enter during scans to drop into interactive scan management menu
+impl TermInputHandler {
+    /// Create new event handler
+    pub fn new(handles: Arc<Handles>) -> Self {
+        Self { handles }
+    }
+
+    /// Initialize the sigint and enter handlers that are responsible for handling initial user
+    /// interaction during scans
+    pub fn initialize(handles: Arc<Handles>) {
+        log::trace!("enter: initialize({:?})", handles);
+
+        let handler = Self::new(handles);
+        handler.start();
+
+        log::trace!("exit: initialize");
+    }
+
+    /// wrapper around sigint_handler and enter_handler
+    fn start(&self) {
+        tokio::task::spawn_blocking(Self::enter_handler);
+
+        if self.handles.config.save_state {
+            // start the ctrl+c handler
+            let cloned = self.handles.clone();
+
+            let result = ctrlc::set_handler(move || {
+                let _ = Self::sigint_handler(cloned.clone());
+            });
+
+            if result.is_err() {
+                log::warn!("Could not set Ctrl+c handler; scan state will not be saved");
+                self.handles
+                    .stats
+                    .send(Command::AddError(StatError::Other))
+                    .unwrap_or_default();
+            }
+        }
+    }
+
+    /// Writes the current state of the program to disk (if save_state is true) and then exits
+    pub fn sigint_handler(handles: Arc<Handles>) -> Result<()> {
+        log::trace!("enter: sigint_handler({:?})", handles);
+
+        let filename = if !handles.config.target_url.is_empty() {
+            // target url populated
+            slugify_filename(&handles.config.target_url, "ferox", "state")
+        } else {
+            // stdin used
+            slugify_filename("stdin", "ferox", "state")
+        };
+
+        let warning = format!(
+            "🚨 Caught {} 🚨 saving scan state to {} ...",
+            style("ctrl+c").yellow(),
+            filename
+        );
+
+        PROGRESS_PRINTER.println(warning);
+
+        let state = FeroxState::new(
+            handles.ferox_scans()?,
+            handles.config.clone(),
+            &RESPONSES,
+            handles.stats.data.clone(),
+            handles.filters.data.clone(),
+        );
+
+        // User didn't set the --no-state flag (so saved_state is still the default true)
+        if handles.config.save_state {
+            let state_file = open_file(&filename);
+
+            let mut buffered_file = state_file?;
+            write_to(&state, &mut buffered_file, true)?;
+        }
+
+        log::trace!("exit: sigint_handler (end of program)");
+        std::process::exit(1);
+    }
+
+    /// Handles specific key events triggered by the user over stdin
+    fn enter_handler() {
+        // todo eventually move away from atomics, the blocking recv is the problem
+        log::trace!("enter: start_enter_handler");
+
+        loop {
+            if PAUSE_SCAN.load(Ordering::Relaxed) {
+                // if the scan is already paused, we don't want this event poller fighting the user
+                // over stdin
+                sleep(Duration::from_millis(SLEEP_DURATION));
+            } else if event::poll(Duration::from_millis(SLEEP_DURATION)).unwrap_or(false) {
+                // It's guaranteed that the `read()` won't block when the `poll()`
+                // function returns `true`
+
+                if let Ok(key_pressed) = event::read() {
+                    // ignore any other keys
+                    if key_pressed == Event::Key(KeyCode::Enter.into()) {
+                        // if the user presses Enter, set PAUSE_SCAN to true. The interactive menu
+                        // will be triggered and will handle setting PAUSE_SCAN to false
+                        PAUSE_SCAN.store(true, Ordering::Release);
+                    }
+                }
+            } else {
+                // Timeout expired and no `Event` is available; use the timeout to check SCAN_COMPLETE
+                if SCAN_COMPLETE.load(Ordering::Relaxed) {
+                    // scan has been marked complete by main, time to exit the loop
+                    break;
+                }
+            }
+        }
+        log::trace!("exit: start_enter_handler");
+    }
+}
--- a/src/event_handlers/mod.rs
+++ b/src/event_handlers/mod.rs
@@ -0,0 +1,16 @@
+//! collection of event handlers (typically long-running tokio spawned tasks)
+mod statistics;
+mod filters;
+mod container;
+mod command;
+mod outputs;
+mod scans;
+mod inputs;
+
+pub use self::command::Command;
+pub use self::container::{Handles, Tasks};
+pub use self::filters::{FiltersHandle, FiltersHandler};
+pub use self::inputs::{TermInputHandler, SCAN_COMPLETE};
+pub use self::outputs::{TermOutHandle, TermOutHandler};
+pub use self::scans::{ScanHandle, ScanHandler};
+pub use self::statistics::{StatsHandle, StatsHandler};
--- a/src/event_handlers/outputs.rs
+++ b/src/event_handlers/outputs.rs
@@ -0,0 +1,589 @@
+use super::Command::AddToUsizeField;
+use super::*;
+
+use anyhow::{Context, Result};
+use futures::future::{BoxFuture, FutureExt};
+use tokio::sync::{mpsc, oneshot};
+
+use crate::{
+    config::Configuration,
+    progress::PROGRESS_PRINTER,
+    response::FeroxResponse,
+    scanner::RESPONSES,
+    send_command, skip_fail,
+    statistics::StatField::{ResourcesDiscovered, TotalExpected},
+    traits::FeroxSerialize,
+    utils::{ferox_print, fmt_err, make_request, open_file, write_to},
+    CommandReceiver, CommandSender, Joiner,
+};
+use std::sync::Arc;
+use url::Url;
+
+#[derive(Debug, Copy, Clone)]
+/// Simple enum for semantic clarity around calling expectations for `process_response`
+enum ProcessResponseCall {
+    /// call should allow recursion
+    Recursive,
+
+    /// call should not allow recursion
+    NotRecursive,
+}
+
+#[derive(Debug)]
+/// Container for terminal output transmitter
+pub struct TermOutHandle {
+    /// Transmitter that sends to the TermOutHandler handler
+    pub tx: CommandSender,
+
+    /// Transmitter that sends to the FileOutHandler handler
+    pub tx_file: CommandSender,
+}
+
+/// implementation of OutputHandle
+impl TermOutHandle {
+    /// Given a CommandSender, create a new OutputHandle
+    pub fn new(tx: CommandSender, tx_file: CommandSender) -> Self {
+        Self { tx, tx_file }
+    }
+
+    /// Send the given Command over `tx`
+    pub fn send(&self, command: Command) -> Result<()> {
+        self.tx.send(command)?;
+        Ok(())
+    }
+
+    /// Sync the handle with the handler
+    pub async fn sync(&self, send_to_file: bool) -> Result<()> {
+        let (tx, rx) = oneshot::channel::<bool>();
+        self.send(Command::Sync(tx))?;
+
+        if send_to_file {
+            let (tx, rx) = oneshot::channel::<bool>();
+            self.tx_file.send(Command::Sync(tx))?;
+            rx.await?;
+        }
+
+        rx.await?;
+        Ok(())
+    }
+}
+
+#[derive(Debug)]
+/// Event handler for files
+pub struct FileOutHandler {
+    /// file output handler's receiver
+    receiver: CommandReceiver,
+
+    /// pointer to "global" configuration struct
+    config: Arc<Configuration>,
+}
+
+impl FileOutHandler {
+    /// Given a file tx/rx pair along with a filename and awaitable task, create
+    /// a FileOutHandler
+    fn new(rx: CommandReceiver, config: Arc<Configuration>) -> Self {
+        Self {
+            receiver: rx,
+            config,
+        }
+    }
+
+    /// Spawn a single consumer task (sc side of mpsc)
+    ///
+    /// The consumer simply receives responses from the terminal handler and writes them to disk
+    async fn start(&mut self, tx_stats: CommandSender) -> Result<()> {
+        log::trace!("enter: start_file_handler({:?})", tx_stats);
+
+        let mut file = open_file(&self.config.output)?;
+
+        log::info!("Writing scan results to {}", self.config.output);
+
+        while let Some(command) = self.receiver.recv().await {
+            match command {
+                Command::Report(response) => {
+                    skip_fail!(write_to(&*response, &mut file, self.config.json));
+                }
+                Command::WriteToDisk(message) => {
+                    // todo consider making report accept dyn FeroxSerialize; would mean adding
+                    //  as_any/box_eq/PartialEq to the trait and then adding them to the
+                    //  implementing structs
+                    skip_fail!(write_to(&*message, &mut file, self.config.json));
+                }
+                Command::Exit => {
+                    break;
+                }
+                Command::Sync(sender) => {
+                    skip_fail!(sender.send(true));
+                }
+                _ => {} // no more needed
+            }
+        }
+
+        // close the file before we tell statistics to save current data to the same file
+        drop(file);
+
+        send_command!(tx_stats, Command::Save);
+
+        log::trace!("exit: start_file_handler");
+        Ok(())
+    }
+}
+
+#[derive(Debug)]
+/// Event handler for terminal
+pub struct TermOutHandler {
+    /// terminal output handler's receiver
+    receiver: CommandReceiver,
+
+    /// file handler
+    tx_file: CommandSender,
+
+    /// optional file handler task
+    file_task: Option<Joiner>,
+
+    /// pointer to "global" configuration struct
+    config: Arc<Configuration>,
+
+    /// handles instance
+    handles: Option<Arc<Handles>>,
+}
+
+/// implementation of TermOutHandler
+impl TermOutHandler {
+    /// Given a terminal receiver along with a file transmitter and filename, create
+    /// an OutputHandler
+    fn new(
+        receiver: CommandReceiver,
+        tx_file: CommandSender,
+        file_task: Option<Joiner>,
+        config: Arc<Configuration>,
+    ) -> Self {
+        Self {
+            receiver,
+            tx_file,
+            file_task,
+            config,
+            handles: None,
+        }
+    }
+
+    /// Creates all required output handlers (terminal, file) and updates the given Handles/Tasks
+    pub fn initialize(
+        config: Arc<Configuration>,
+        tx_stats: CommandSender,
+    ) -> (Joiner, TermOutHandle) {
+        log::trace!("enter: initialize({:?}, {:?})", config, tx_stats);
+
+        let (tx_term, rx_term) = mpsc::unbounded_channel::<Command>();
+        let (tx_file, rx_file) = mpsc::unbounded_channel::<Command>();
+
+        let mut file_handler = FileOutHandler::new(rx_file, config.clone());
+
+        let tx_stats_clone = tx_stats.clone();
+
+        let file_task = if !config.output.is_empty() {
+            // -o used, need to spawn the thread for writing to disk
+            Some(tokio::spawn(async move {
+                file_handler.start(tx_stats_clone).await
+            }))
+        } else {
+            None
+        };
+
+        let mut term_handler = Self::new(rx_term, tx_file.clone(), file_task, config);
+        let term_task = tokio::spawn(async move { term_handler.start(tx_stats).await });
+
+        let event_handle = TermOutHandle::new(tx_term, tx_file);
+
+        log::trace!("exit: initialize -> ({:?}, {:?})", term_task, event_handle);
+
+        (term_task, event_handle)
+    }
+
+    /// Start a single consumer task (sc side of mpsc)
+    ///
+    /// The consumer simply receives `Command` and acts accordingly
+    async fn start(&mut self, tx_stats: CommandSender) -> Result<()> {
+        log::trace!("enter: start({:?})", tx_stats);
+
+        while let Some(command) = self.receiver.recv().await {
+            match command {
+                Command::Report(resp) => {
+                    self.process_response(tx_stats.clone(), resp, ProcessResponseCall::Recursive)
+                        .await?;
+                }
+                Command::Sync(sender) => {
+                    sender.send(true).unwrap_or_default();
+                }
+                Command::AddHandles(handles) => {
+                    self.handles = Some(handles);
+                }
+                Command::Exit => {
+                    if self.file_task.is_some() && self.tx_file.send(Command::Exit).is_ok() {
+                        self.file_task.as_mut().unwrap().await??; // wait for death
+                    }
+                    break;
+                }
+                _ => {} // no more commands needed
+            }
+        }
+        log::trace!("exit: start");
+        Ok(())
+    }
+
+    /// upon receiving a `FeroxResponse` from the mpsc, handle printing, sending to the replay
+    /// proxy, checking for backups of the `FeroxResponse`'s url, and tracking the response.
+    fn process_response(
+        &self,
+        tx_stats: CommandSender,
+        mut resp: Box<FeroxResponse>,
+        call_type: ProcessResponseCall,
+    ) -> BoxFuture<'_, Result<()>> {
+        log::trace!("enter: process_response({:?}, {:?})", resp, call_type);
+
+        async move {
+            let should_filter = self
+                .handles
+                .as_ref()
+                .unwrap()
+                .filters
+                .data
+                .should_filter_response(&resp, self.handles.as_ref().unwrap().stats.tx.clone());
+
+            let contains_sentry = if !self.config.filter_status.is_empty() {
+                // -C was used, meaning -s was not and we should ignore the defaults
+                // https://github.com/epi052/feroxbuster/issues/535
+                // -C indicates that we should filter that status code, but allow all others
+                !self.config.filter_status.contains(&resp.status().as_u16())
+            } else {
+                // -C wasn't used, so, we defer to checking the -s values
+                self.config.status_codes.contains(&resp.status().as_u16())
+            };
+
+            let unknown_sentry = !RESPONSES.contains(&resp); // !contains == unknown
+            let should_process_response = contains_sentry && unknown_sentry && !should_filter;
+
+            if should_process_response {
+                // print to stdout
+                ferox_print(&resp.as_str(), &PROGRESS_PRINTER);
+
+                send_command!(tx_stats, AddToUsizeField(ResourcesDiscovered, 1));
+
+                if self.file_task.is_some() {
+                    // -o used, need to send the report to be written out to disk
+                    self.tx_file
+                        .send(Command::Report(resp.clone()))
+                        .with_context(|| {
+                            fmt_err(&format!("Could not send {} to file handler", resp))
+                        })?;
+                }
+            }
+            log::trace!("report complete: {}", resp.url());
+
+            if self.config.replay_client.is_some() && should_process_response {
+                // replay proxy specified/client created and this response's status code is one that
+                // should be replayed; not using logged_request due to replay proxy client
+                let data = if self.config.data.is_empty() {
+                    None
+                } else {
+                    Some(self.config.data.as_slice())
+                };
+
+                make_request(
+                    self.config.replay_client.as_ref().unwrap(),
+                    resp.url(),
+                    resp.method().as_str(),
+                    data,
+                    self.config.output_level,
+                    &self.config,
+                    tx_stats.clone(),
+                )
+                .await
+                .with_context(|| "Could not replay request through replay proxy")?;
+            }
+
+            if self.config.collect_backups
+                && should_process_response
+                && matches!(call_type, ProcessResponseCall::Recursive)
+            {
+                // --collect-backups was used; the response is one we care about, and the function
+                // call came from the loop in `.start` (i.e. recursive was specified)
+                let backup_urls = self.generate_backup_urls(&resp).await;
+
+                // need to manually adjust stats
+                send_command!(tx_stats, AddToUsizeField(TotalExpected, backup_urls.len()));
+
+                for backup_url in &backup_urls {
+                    let backup_response = make_request(
+                        &self.config.client,
+                        backup_url,
+                        resp.method().as_str(),
+                        None,
+                        self.config.output_level,
+                        &self.config,
+                        tx_stats.clone(),
+                    )
+                    .await
+                    .with_context(|| {
+                        format!("Could not request backup of {}", resp.url().as_str())
+                    })?;
+
+                    let ferox_response = FeroxResponse::from(
+                        backup_response,
+                        resp.url().as_str(),
+                        resp.method().as_str(),
+                        resp.output_level,
+                    )
+                    .await;
+
+                    self.process_response(
+                        tx_stats.clone(),
+                        Box::new(ferox_response),
+                        ProcessResponseCall::NotRecursive,
+                    )
+                    .await?;
+                }
+            }
+
+            if should_process_response {
+                // add response to RESPONSES for serialization in case of ctrl+c
+                // placed all by its lonesome like this so that RESPONSES can take ownership
+                // of the FeroxResponse
+
+                // before ownership is transferred, there's no real reason to keep the body anymore
+                // so we can free that piece of data, reducing memory usage
+                resp.drop_text();
+
+                RESPONSES.insert(*resp);
+            }
+            log::trace!("exit: process_response");
+            Ok(())
+        }
+        .boxed()
+    }
+
+    /// internal helper to stay DRY
+    fn add_new_url_to_vec(&self, url: &Url, new_name: &str, urls: &mut Vec<Url>) {
+        if let Ok(joined) = url.join(new_name) {
+            urls.push(joined);
+        }
+    }
+
+    /// given a `FeroxResponse`, generate either 6 or 7 urls that are likely backups of the
+    /// original.
+    ///
+    /// example:
+    ///     original: LICENSE.txt
+    ///     backups:    
+    ///         - LICENSE.txt~
+    ///         - LICENSE.txt.bak
+    ///         - LICENSE.txt.bak2
+    ///         - LICENSE.txt.old
+    ///         - LICENSE.txt.1
+    ///         - LICENSE.bak
+    ///         - .LICENSE.txt.swp
+    async fn generate_backup_urls(&self, response: &FeroxResponse) -> Vec<Url> {
+        log::trace!("enter: generate_backup_urls({:?})", response);
+
+        let mut urls = vec![];
+        let url = response.url();
+
+        // confirmed safe: see src/response.rs for comments
+        let filename = url.path_segments().unwrap().last().unwrap();
+
+        if !filename.is_empty() {
+            // append rules
+            for suffix in ["~", ".bak", ".bak2", ".old", ".1"] {
+                self.add_new_url_to_vec(url, &format!("{}{}", filename, suffix), &mut urls);
+            }
+
+            // vim swap rule
+            self.add_new_url_to_vec(url, &format!(".{}.swp", filename), &mut urls);
+
+            // replace original extension rule
+            let parts: Vec<_> = filename
+                .split('.')
+                // keep things like /.bash_history out of results
+                .filter(|part| !part.is_empty())
+                .collect();
+
+            if parts.len() > 1 {
+                // filename + at least one extension, i.e. whatever.js becomes ["whatever", "js"]
+                self.add_new_url_to_vec(url, &format!("{}.bak", parts.first().unwrap()), &mut urls);
+            }
+        }
+
+        log::trace!("exit: generate_backup_urls -> {:?}", urls);
+        urls
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::event_handlers::Command;
+
+    #[test]
+    /// try to hit struct field coverage of FileOutHandler
+    fn struct_fields_of_file_out_handler() {
+        let (_, rx) = mpsc::unbounded_channel::<Command>();
+        let config = Arc::new(Configuration::new().unwrap());
+        let foh = FileOutHandler {
+            config,
+            receiver: rx,
+        };
+        println!("{:?}", foh);
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+    /// try to hit struct field coverage of TermOutHandler
+    async fn struct_fields_of_term_out_handler() {
+        let (tx, rx) = mpsc::unbounded_channel::<Command>();
+        let (tx_file, _) = mpsc::unbounded_channel::<Command>();
+        let config = Arc::new(Configuration::new().unwrap());
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+
+        let toh = TermOutHandler {
+            config,
+            file_task: None,
+            receiver: rx,
+            tx_file,
+            handles: Some(handles),
+        };
+
+        println!("{:?}", toh);
+        tx.send(Command::Exit).unwrap();
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+    /// when the feroxresponse's url contains an extension, there should be 7 urls returned
+    async fn generate_backup_urls_creates_correct_urls_when_extension_present() {
+        let (tx, rx) = mpsc::unbounded_channel::<Command>();
+        let (tx_file, _) = mpsc::unbounded_channel::<Command>();
+        let config = Arc::new(Configuration::new().unwrap());
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+
+        let toh = TermOutHandler {
+            config,
+            file_task: None,
+            receiver: rx,
+            tx_file,
+            handles: Some(handles),
+        };
+
+        let expected: Vec<_> = vec![
+            "derp.php~",
+            "derp.php.bak",
+            "derp.php.bak2",
+            "derp.php.old",
+            "derp.php.1",
+            ".derp.php.swp",
+            "derp.bak",
+        ];
+
+        let mut fr = FeroxResponse::default();
+        fr.set_url("http://localhost/derp.php");
+
+        let urls = toh.generate_backup_urls(&fr).await;
+
+        let paths: Vec<_> = urls
+            .iter()
+            .map(|url| url.path_segments().unwrap().last().unwrap())
+            .collect();
+
+        assert_eq!(urls.len(), 7);
+
+        for path in paths {
+            assert!(expected.contains(&path));
+        }
+
+        tx.send(Command::Exit).unwrap();
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+    /// when the feroxresponse's url doesn't contain an extension, there should be 6 urls returned
+    async fn generate_backup_urls_creates_correct_urls_when_extension_not_present() {
+        let (tx, rx) = mpsc::unbounded_channel::<Command>();
+        let (tx_file, _) = mpsc::unbounded_channel::<Command>();
+        let config = Arc::new(Configuration::new().unwrap());
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+
+        let toh = TermOutHandler {
+            config,
+            file_task: None,
+            receiver: rx,
+            tx_file,
+            handles: Some(handles),
+        };
+
+        let expected: Vec<_> = vec![
+            "derp~",
+            "derp.bak",
+            "derp.bak2",
+            "derp.old",
+            "derp.1",
+            ".derp.swp",
+        ];
+
+        let mut fr = FeroxResponse::default();
+        fr.set_url("http://localhost/derp");
+
+        let urls = toh.generate_backup_urls(&fr).await;
+
+        let paths: Vec<_> = urls
+            .iter()
+            .map(|url| url.path_segments().unwrap().last().unwrap())
+            .collect();
+
+        assert_eq!(urls.len(), 6);
+
+        for path in paths {
+            assert!(expected.contains(&path));
+        }
+
+        tx.send(Command::Exit).unwrap();
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+    /// test to ensure that backups are requested from the directory in which they were found
+    /// re: issue #513
+    async fn generate_backup_urls_creates_correct_urls_when_not_at_root() {
+        let (tx, rx) = mpsc::unbounded_channel::<Command>();
+        let (tx_file, _) = mpsc::unbounded_channel::<Command>();
+        let config = Arc::new(Configuration::new().unwrap());
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+
+        let toh = TermOutHandler {
+            config,
+            file_task: None,
+            receiver: rx,
+            tx_file,
+            handles: Some(handles),
+        };
+
+        let expected: Vec<_> = vec![
+            "http://localhost/wordpress/derp.php~",
+            "http://localhost/wordpress/derp.php.bak",
+            "http://localhost/wordpress/derp.php.bak2",
+            "http://localhost/wordpress/derp.php.old",
+            "http://localhost/wordpress/derp.php.1",
+            "http://localhost/wordpress/.derp.php.swp",
+            "http://localhost/wordpress/derp.bak",
+        ];
+
+        let mut fr = FeroxResponse::default();
+        fr.set_url("http://localhost/wordpress/derp.php");
+
+        let urls = toh.generate_backup_urls(&fr).await;
+
+        let url_strs: Vec<_> = urls.iter().map(|url| url.as_str()).collect();
+
+        assert_eq!(urls.len(), 7);
+
+        for url_str in url_strs {
+            assert!(expected.contains(&url_str));
+        }
+
+        tx.send(Command::Exit).unwrap();
+    }
+}
--- a/src/event_handlers/scans.rs
+++ b/src/event_handlers/scans.rs
@@ -0,0 +1,397 @@
+use std::sync::Arc;
+
+use anyhow::{bail, Result};
+use tokio::sync::{mpsc, Semaphore};
+
+use crate::{
+    response::FeroxResponse,
+    scan_manager::{FeroxScan, FeroxScans, ScanOrder},
+    scanner::FeroxScanner,
+    statistics::StatField::TotalScans,
+    url::FeroxUrl,
+    utils::should_deny_url,
+    CommandReceiver, CommandSender, FeroxChannel, Joiner, SLEEP_DURATION,
+};
+
+use super::command::Command::AddToUsizeField;
+use super::*;
+use crate::statistics::StatField;
+use reqwest::Url;
+use tokio::time::Duration;
+
+#[derive(Debug)]
+/// Container for recursion transmitter and FeroxScans object
+pub struct ScanHandle {
+    /// FeroxScans object used across modules to track scans
+    pub data: Arc<FeroxScans>,
+
+    /// transmitter used to update `data`
+    pub tx: CommandSender,
+}
+
+/// implementation of RecursionHandle
+impl ScanHandle {
+    /// Given an Arc-wrapped FeroxScans and CommandSender, create a new RecursionHandle
+    pub fn new(data: Arc<FeroxScans>, tx: CommandSender) -> Self {
+        Self { data, tx }
+    }
+
+    /// Send the given Command over `tx`
+    pub fn send(&self, command: Command) -> Result<()> {
+        self.tx.send(command)?;
+        Ok(())
+    }
+}
+
+/// event handler for updating a single data structure of all FeroxScans
+#[derive(Debug)]
+pub struct ScanHandler {
+    /// collection of FeroxScans
+    data: Arc<FeroxScans>,
+
+    /// handles to other handlers needed to kick off a scan while already past main
+    handles: Arc<Handles>,
+
+    /// Receiver half of mpsc from which `Command`s are processed
+    receiver: CommandReceiver,
+
+    /// wordlist (re)used for each scan
+    wordlist: std::sync::Mutex<Option<Arc<Vec<String>>>>,
+
+    /// group of scans that need to be joined
+    tasks: Vec<Arc<FeroxScan>>,
+
+    /// Maximum recursion depth, a depth of 0 is infinite recursion
+    max_depth: usize,
+
+    /// depths associated with the initial targets provided by the user
+    depths: Vec<(String, usize)>,
+
+    /// Bounded semaphore used as a barrier to limit concurrent scans
+    limiter: Arc<Semaphore>,
+}
+
+/// implementation of event handler for filters
+impl ScanHandler {
+    /// create new event handler
+    pub fn new(
+        data: Arc<FeroxScans>,
+        handles: Arc<Handles>,
+        max_depth: usize,
+        receiver: CommandReceiver,
+    ) -> Self {
+        let limit = handles.config.scan_limit;
+        let limiter = Semaphore::new(limit);
+
+        if limit == 0 {
+            // scan_limit == 0 means no limit should be imposed... however, scoping the Semaphore
+            // permit is tricky, so as a workaround, we'll add a ridiculous number of permits to
+            // the semaphore (1,152,921,504,606,846,975 to be exact) and call that 'unlimited'
+
+            // note to self: the docs say max is usize::MAX >> 3, however, threads will panic if
+            // that value is used (says adding (1) will overflow the semaphore, even though none
+            // are being added...)
+            limiter.add_permits(usize::MAX >> 4);
+        }
+
+        Self {
+            data,
+            handles,
+            receiver,
+            max_depth,
+            tasks: Vec::new(),
+            depths: Vec::new(),
+            limiter: Arc::new(limiter),
+            wordlist: std::sync::Mutex::new(None),
+        }
+    }
+
+    /// Set the wordlist
+    fn wordlist(&self, wordlist: Arc<Vec<String>>) {
+        if let Ok(mut guard) = self.wordlist.lock() {
+            if guard.is_none() {
+                let _ = std::mem::replace(&mut *guard, Some(wordlist));
+            }
+        }
+    }
+
+    /// Initialize new `FeroxScans` and the sc side of an mpsc channel that is responsible for
+    /// updates to the aforementioned object.
+    pub fn initialize(handles: Arc<Handles>) -> (Joiner, ScanHandle) {
+        log::trace!("enter: initialize");
+
+        let data = Arc::new(FeroxScans::new(handles.config.output_level));
+        let (tx, rx): FeroxChannel<Command> = mpsc::unbounded_channel();
+
+        let max_depth = handles.config.depth;
+
+        let mut handler = Self::new(data.clone(), handles, max_depth, rx);
+
+        let task = tokio::spawn(async move { handler.start().await });
+
+        let event_handle = ScanHandle::new(data, tx);
+
+        log::trace!("exit: initialize -> ({:?}, {:?})", task, event_handle);
+
+        (task, event_handle)
+    }
+
+    /// Start a single consumer task (sc side of mpsc)
+    ///
+    /// The consumer simply receives `Command` and acts accordingly
+    pub async fn start(&mut self) -> Result<()> {
+        log::trace!("enter: start({:?})", self);
+
+        while let Some(command) = self.receiver.recv().await {
+            match command {
+                Command::ScanInitialUrls(targets) => {
+                    self.ordered_scan_url(targets, ScanOrder::Initial).await?;
+                }
+                Command::ScanNewUrl(target) => {
+                    // added as part of interactive menu ability (2.4.1) to add a new scan.
+                    // we don't have a way of knowing if they're adding a new url entirely (i.e.
+                    // new base url), or simply adding a new sub-directory found some other way.
+                    // Since we can't know, we'll start a scan as though we received the scan
+                    // from -u | --stdin
+                    self.ordered_scan_url(vec![target], ScanOrder::Initial)
+                        .await?;
+                }
+                Command::UpdateWordlist(wordlist) => {
+                    self.wordlist(wordlist);
+                }
+                Command::JoinTasks(sender) => {
+                    let ferox_scans = self.handles.ferox_scans().unwrap_or_default();
+                    let limiter_clone = self.limiter.clone();
+
+                    tokio::spawn(async move {
+                        while ferox_scans.has_active_scans() {
+                            tokio::time::sleep(Duration::from_millis(SLEEP_DURATION + 250)).await;
+                        }
+                        limiter_clone.close();
+                        sender.send(true).expect("oneshot channel failed");
+                    });
+                }
+                Command::TryRecursion(response) => {
+                    self.try_recursion(response).await?;
+                }
+                Command::Sync(sender) => {
+                    sender.send(true).unwrap_or_default();
+                }
+                Command::AddDiscoveredExtension(new_extension) => {
+                    // if --collect-extensions was used, AND the new extension isn't in
+                    // the --dont-collect list AND it's also not in the --extensions list, AND
+                    // we actually added a new extension (i.e. wasn't previously known), add
+                    // it to FeroxScans.collected_extensions
+                    if self.handles.config.collect_extensions
+                        && !self.handles.config.dont_collect.contains(&new_extension)
+                        && !self.handles.config.extensions.contains(&new_extension)
+                        && self.data.add_discovered_extension(new_extension)
+                    {
+                        self.update_all_bar_lengths()?;
+                        self.handles
+                            .stats
+                            .send(Command::AddToUsizeField(StatField::ExtensionsCollected, 1))
+                            .unwrap_or_default();
+                    }
+                }
+                _ => {} // no other commands needed for RecursionHandler
+            }
+        }
+
+        log::trace!("exit: start");
+        Ok(())
+    }
+
+    /// update all current and future bar lengths
+    ///
+    /// updating all bar lengths correctly requires a few different actions on our part.
+    /// - get the current number of requests expected per scan (dynamic when --collect-extensions
+    ///     is used)
+    /// - update the overall progress bar via the statistics handler (total expected)
+    /// - update the expected per scan value tracked in the statistics handler
+    /// - update progress bars on each FeroxScan (type::directory) that are running/not-started
+    /// - update progress bar length on FeroxScans (this is used when creating new a FeroxScan and
+    ///     determines the new scan's progress bar length)
+    fn update_all_bar_lengths(&self) -> Result<()> {
+        log::trace!("enter: update_all_bar_lengths");
+
+        // current number of requests expected per scan
+        // ExpectedPerScan and TotalExpected are a += action, so we need the wordlist length to
+        // update them while the other updates use expected_num_requests_per_dir
+        let num_words = self.get_wordlist()?.len();
+        let current_expectation = self.handles.expected_num_requests_per_dir() as u64;
+
+        // used in the calculation of bar width down below, see explanation there
+        let divisor = self.handles.expected_num_requests_multiplier() as u64 - 1;
+
+        // add another `wordlist.len` to the expected per scan tracker in the statistics handler
+        self.handles
+            .stats
+            .send(AddToUsizeField(StatField::ExpectedPerScan, num_words))?;
+
+        // since we're adding extensions in the middle of scans (potentially), we need to take
+        // current number of requests into account, new_total will be used as an accumulator
+        // used to increment the overall progress bar
+        let mut new_total = 0;
+
+        if let Ok(ferox_scans) = self.handles.ferox_scans() {
+            // update progress bar length on FeroxScans, which used when creating a new FeroxScan's
+            // progress bar and should mirror the expected_per_scan field on Statistics
+            ferox_scans.set_bar_length(current_expectation);
+
+            if let Ok(scans_guard) = ferox_scans.scans.read() {
+                // update progress bars on each FeroxScan where its scan type is directory and
+                // scan status is either running or not-started
+                for scan in scans_guard.iter() {
+                    if scan.is_active() {
+                        // current number of words left in the 'to-scan' bin, for example:
+                        //
+                        // say we have a 2000 word wordlist, have `-x js` on the command line, and
+                        // just found `php` as a new extension
+                        //
+                        // that puts our state at:
+                        // - wordlist length: 2000
+                        // - total expected: 4000 (original length * 2 for -x js)
+                        //
+                        // let's assume the current scan has sent 3000 requests so far
+                        // that means to get the number of `words` left to send, we need to take
+                        // the difference of 4000 and 3000 and then divide that by the current
+                        // multiplier (2 in the example)
+                        //
+                        // (4000 - 3000) / 2 => 500 words left to send
+                        //
+                        // the remaining 500 words will be sent as 3 variations (word, word.js,
+                        // word.php). So, we would then need to increment the bar by 500 to
+                        // reflect the dynamism of adding extensions mid-scan.
+                        let bar = scan.progress_bar();
+
+                        // (4000 - 3000) / 2 => 500 words left to send
+                        let length = bar.length();
+                        let num_words_left = (length - bar.position()) / divisor;
+
+                        // accumulate each bar's increment value for incrementing the total bar
+                        new_total += num_words_left;
+
+                        bar.inc_length(num_words_left);
+                    }
+                }
+            }
+
+            // add the total number of newly expected requests to the overall progress bar
+            // via the statistics handler
+            self.handles.stats.send(AddToUsizeField(
+                StatField::TotalExpected,
+                new_total as usize,
+            ))?;
+        }
+
+        log::trace!("exit: update_all_bar_lengths");
+        Ok(())
+    }
+
+    /// Helper to easily get the (locked) underlying wordlist
+    pub fn get_wordlist(&self) -> Result<Arc<Vec<String>>> {
+        if let Ok(guard) = self.wordlist.lock().as_ref() {
+            if let Some(list) = guard.as_ref() {
+                return Ok(list.clone());
+            }
+        }
+
+        bail!("Could not get underlying wordlist")
+    }
+
+    /// wrapper around scanning a url to stay DRY
+    async fn ordered_scan_url(&mut self, targets: Vec<String>, order: ScanOrder) -> Result<()> {
+        log::trace!("enter: ordered_scan_url({:?}, {:?})", targets, order);
+        let should_test_deny = !self.handles.config.url_denylist.is_empty()
+            || !self.handles.config.regex_denylist.is_empty();
+
+        for target in targets {
+            if self.data.contains(&target) && matches!(order, ScanOrder::Latest) {
+                // FeroxScans knows about this url and scan isn't an Initial scan
+                // initial scans are skipped because when resuming from a .state file, the scans
+                // will already be populated in FeroxScans, so we need to not skip kicking off
+                // their scans
+                continue;
+            }
+
+            let scan = if let Some(ferox_scan) = self.data.get_scan_by_url(&target) {
+                ferox_scan // scan already known
+            } else {
+                self.data.add_directory_scan(&target, order).1 // add the new target; return FeroxScan
+            };
+
+            if should_test_deny && should_deny_url(&Url::parse(&target)?, self.handles.clone())? {
+                // response was caught by a user-provided deny list
+                // checking this last, since it's most susceptible to longer runtimes due to what
+                // input is received
+                continue;
+            }
+
+            let list = self.get_wordlist()?;
+
+            log::info!("scan handler received {} - beginning scan", target);
+
+            if matches!(order, ScanOrder::Initial) {
+                // keeps track of the initial targets' scan depths in order to enforce the
+                // maximum recursion depth on any identified sub-directories
+                let url = FeroxUrl::from_string(&target, self.handles.clone());
+                let depth = url.depth().unwrap_or(0);
+                self.depths.push((target.clone(), depth));
+            }
+
+            let scanner = FeroxScanner::new(
+                &target,
+                order,
+                list,
+                self.limiter.clone(),
+                self.handles.clone(),
+            );
+
+            let task = tokio::spawn(async move {
+                if let Err(e) = scanner.scan_url().await {
+                    log::warn!("{}", e);
+                }
+            });
+
+            self.handles.stats.send(AddToUsizeField(TotalScans, 1))?;
+
+            scan.set_task(task).await?;
+
+            self.tasks.push(scan.clone());
+        }
+
+        log::trace!("exit: ordered_scan_url");
+        Ok(())
+    }
+
+    async fn try_recursion(&mut self, response: Box<FeroxResponse>) -> Result<()> {
+        log::trace!("enter: try_recursion({:?})", response,);
+
+        if !self.handles.config.force_recursion && !response.is_directory() {
+            // not a directory and --force-recursion wasn't used, quick exit
+            return Ok(());
+        }
+
+        let mut base_depth = 1_usize;
+
+        for (base_url, base_url_depth) in &self.depths {
+            if response.url().as_str().starts_with(base_url) {
+                base_depth = *base_url_depth;
+            }
+        }
+
+        if response.reached_max_depth(base_depth, self.max_depth, self.handles.clone()) {
+            // at or past recursion depth
+            return Ok(());
+        }
+
+        let targets = vec![response.url().to_string()];
+        self.ordered_scan_url(targets, ScanOrder::Latest).await?;
+
+        log::info!("Added new directory to recursive scan: {}", response.url());
+
+        log::trace!("exit: try_recursion");
+        Ok(())
+    }
+}
--- a/src/event_handlers/statistics.rs
+++ b/src/event_handlers/statistics.rs
@@ -0,0 +1,171 @@
+use super::*;
+use crate::{
+    config::Configuration,
+    progress::{add_bar, BarType},
+    statistics::{StatField, Stats},
+    CommandSender, FeroxChannel, Joiner,
+};
+use anyhow::Result;
+use console::style;
+use indicatif::ProgressBar;
+use std::{sync::Arc, time::Instant};
+use tokio::sync::{
+    mpsc::{self, UnboundedReceiver},
+    oneshot,
+};
+
+#[derive(Debug)]
+/// Container for statistics transmitter and Stats object
+pub struct StatsHandle {
+    /// Stats object used across modules to track statistics
+    pub data: Arc<Stats>,
+
+    /// transmitter used to update `data`
+    pub tx: CommandSender,
+}
+
+/// implementation of StatsHandle
+impl StatsHandle {
+    /// Given an Arc-wrapped Stats and CommandSender, create a new StatsHandle
+    pub fn new(data: Arc<Stats>, tx: CommandSender) -> Self {
+        Self { data, tx }
+    }
+
+    /// Send the given Command over `tx`
+    pub fn send(&self, command: Command) -> Result<()> {
+        self.tx.send(command)?;
+        Ok(())
+    }
+
+    /// Sync the handle with the handler
+    pub async fn sync(&self) -> Result<()> {
+        let (tx, rx) = oneshot::channel::<bool>();
+        self.send(Command::Sync(tx))?;
+        rx.await?;
+        Ok(())
+    }
+}
+
+/// event handler struct for updating statistics
+#[derive(Debug)]
+pub struct StatsHandler {
+    /// overall scan's progress bar
+    bar: ProgressBar,
+
+    /// Receiver half of mpsc from which `StatCommand`s are processed
+    receiver: UnboundedReceiver<Command>,
+
+    /// data class that stores all statistics updates
+    stats: Arc<Stats>,
+}
+
+/// implementation of event handler for statistics
+impl StatsHandler {
+    /// create new event handler
+    fn new(stats: Arc<Stats>, rx_stats: UnboundedReceiver<Command>) -> Self {
+        // will be updated later via StatCommand; delay is for banner to print first
+        let bar = ProgressBar::hidden();
+
+        Self {
+            bar,
+            stats,
+            receiver: rx_stats,
+        }
+    }
+
+    /// Start a single consumer task (sc side of mpsc)
+    ///
+    /// The consumer simply receives `StatCommands` and updates the given `Stats` object as appropriate
+    async fn start(&mut self, output_file: &str) -> Result<()> {
+        log::trace!("enter: start({:?})", self);
+
+        let start = Instant::now();
+
+        while let Some(command) = self.receiver.recv().await {
+            match command as Command {
+                Command::AddError(err) => {
+                    self.stats.add_error(err);
+                    self.increment_bar();
+                }
+                Command::AddStatus(status) => {
+                    self.stats.add_status_code(status);
+
+                    self.increment_bar();
+                }
+                Command::AddRequest => {
+                    self.stats.add_request();
+                    self.increment_bar();
+                }
+                Command::Save => {
+                    self.stats
+                        .save(start.elapsed().as_secs_f64(), output_file)?;
+                }
+                Command::AddToUsizeField(field, value) => {
+                    self.stats.update_usize_field(field, value);
+
+                    if matches!(field, StatField::TotalScans | StatField::TotalExpected) {
+                        self.bar.set_length(self.stats.total_expected() as u64);
+                    }
+                }
+                Command::SubtractFromUsizeField(field, value) => {
+                    self.stats.subtract_from_usize_field(field, value);
+
+                    if matches!(field, StatField::TotalExpected) {
+                        self.bar.set_length(self.stats.total_expected() as u64);
+                    }
+                }
+                Command::AddToF64Field(field, value) => self.stats.update_f64_field(field, value),
+                Command::CreateBar => {
+                    self.bar = add_bar("", self.stats.total_expected() as u64, BarType::Total);
+                }
+                Command::LoadStats(filename) => {
+                    self.stats.merge_from(&filename)?;
+                }
+                Command::Sync(sender) => {
+                    sender.send(true).unwrap_or_default();
+                }
+                Command::Exit => break,
+                _ => {} // no more commands needed
+            }
+        }
+
+        self.bar.finish();
+
+        log::debug!("{:#?}", *self.stats);
+        log::trace!("exit: start");
+        Ok(())
+    }
+
+    /// Wrapper around incrementing the overall scan's progress bar
+    fn increment_bar(&self) {
+        let msg = format!(
+            "{}:{:<7} {}:{:<7}",
+            style("found").green(),
+            self.stats.resources_discovered(),
+            style("errors").red(),
+            self.stats.errors(),
+        );
+
+        self.bar.set_message(&msg);
+        self.bar.inc(1);
+    }
+
+    /// Initialize new `Stats` object and the sc side of an mpsc channel that is responsible for
+    /// updates to the aforementioned object.
+    pub fn initialize(config: Arc<Configuration>) -> (Joiner, StatsHandle) {
+        log::trace!("enter: initialize");
+
+        let data = Arc::new(Stats::new(config.json));
+        let (tx, rx): FeroxChannel<Command> = mpsc::unbounded_channel();
+
+        let mut handler = StatsHandler::new(data.clone(), rx);
+
+        let task = tokio::spawn(async move { handler.start(&config.output).await });
+
+        let event_handle = StatsHandle::new(data, tx);
+
+        log::trace!("exit: initialize -> ({:?}, {:?})", task, event_handle);
+
+        (task, event_handle)
+    }
+}
--- a/src/extractor.rs
+++ b/src/extractor.rs
@@ -1,504 +0,0 @@
-use crate::{
-    client,
-    config::{Configuration, CONFIGURATION},
-    scanner::SCANNED_URLS,
-    statistics::{
-        StatCommand::{self, UpdateUsizeField},
-        StatField::{LinksExtracted, TotalExpected},
-    },
-    utils::{format_url, make_request},
-    FeroxResponse,
-};
-use lazy_static::lazy_static;
-use regex::Regex;
-use reqwest::Url;
-use std::collections::HashSet;
-use tokio::sync::mpsc::UnboundedSender;
-
-/// Regular expression used in [LinkFinder](https://github.com/GerbenJavado/LinkFinder)
-///
-/// Incorporates change from this [Pull Request](https://github.com/GerbenJavado/LinkFinder/pull/66/files)
-const LINKFINDER_REGEX: &str = r#"(?:"|')(((?:[a-zA-Z]{1,10}://|//)[^"'/]{1,}\.[a-zA-Z]{2,}[^"']{0,})|((?:/|\.\./|\./)[^"'><,;| *()(%%$^/\\\[\]][^"'><,;|()]{1,})|([a-zA-Z0-9_\-/]{1,}/[a-zA-Z0-9_\-/]{1,}\.(?:[a-zA-Z]{1,4}|action)(?:[\?|#][^"|']{0,}|))|([a-zA-Z0-9_\-/]{1,}/[a-zA-Z0-9_\-/]{3,}(?:[\?|#][^"|']{0,}|))|([a-zA-Z0-9_\-.]{1,}\.(?:php|asp|aspx|jsp|json|action|html|js|txt|xml)(?:[\?|#][^"|']{0,}|)))(?:"|')"#;
-
-/// Regular expression to pull url paths from robots.txt
-///
-/// ref: https://developers.google.com/search/reference/robots_txt
-const ROBOTS_TXT_REGEX: &str =
-    r#"(?m)^ *(Allow|Disallow): *(?P<url_path>[a-zA-Z0-9._/?#@!&'()+,;%=-]+?)$"#; // multi-line (?m)
-
-lazy_static! {
-    /// `LINKFINDER_REGEX` as a regex::Regex type
-    static ref LINKS_REGEX: Regex = Regex::new(LINKFINDER_REGEX).unwrap();
-
-    /// `ROBOTS_TXT_REGEX` as a regex::Regex type
-    static ref ROBOTS_REGEX: Regex = Regex::new(ROBOTS_TXT_REGEX).unwrap();
-}
-
-/// Iterate over a given path, return a list of every sub-path found
-///
-/// example: `path` contains a link fragment `homepage/assets/img/icons/handshake.svg`
-/// the following fragments would be returned:
-///   - homepage/assets/img/icons/handshake.svg
-///   - homepage/assets/img/icons/
-///   - homepage/assets/img/
-///   - homepage/assets/
-///   - homepage/
-fn get_sub_paths_from_path(path: &str) -> Vec<String> {
-    log::trace!("enter: get_sub_paths_from_path({})", path);
-    let mut paths = vec![];
-
-    // filter out any empty strings caused by .split
-    let mut parts: Vec<&str> = path.split('/').filter(|s| !s.is_empty()).collect();
-
-    let length = parts.len();
-
-    for i in 0..length {
-        // iterate over all parts of the path
-        if parts.is_empty() {
-            // pop left us with an empty vector, we're done
-            break;
-        }
-
-        let mut possible_path = parts.join("/");
-
-        if possible_path.is_empty() {
-            // .join can result in an empty string, which we don't need, ignore
-            continue;
-        }
-
-        if i > 0 {
-            // this isn't the last index of the parts array
-            // ex: /buried/misc/stupidfile.php
-            // this block skips the file but sees all parent folders
-            possible_path = format!("{}/", possible_path);
-        }
-
-        paths.push(possible_path); // good sub-path found
-        parts.pop(); // use .pop() to remove the last part of the path and continue iteration
-    }
-
-    log::trace!("exit: get_sub_paths_from_path -> {:?}", paths);
-    paths
-}
-
-/// simple helper to stay DRY, trys to join a url + fragment and add it to the `links` HashSet
-fn add_link_to_set_of_links(link: &str, url: &Url, links: &mut HashSet<String>) {
-    log::trace!(
-        "enter: add_link_to_set_of_links({}, {}, {:?})",
-        link,
-        url.to_string(),
-        links
-    );
-    match url.join(&link) {
-        Ok(new_url) => {
-            links.insert(new_url.to_string());
-        }
-        Err(e) => {
-            log::error!("Could not join given url to the base url: {}", e);
-        }
-    }
-    log::trace!("exit: add_link_to_set_of_links");
-}
-
-/// Given a `reqwest::Response`, perform the following actions
-///   - parse the response's text for links using the linkfinder regex
-///   - for every link found take its url path and parse each sub-path
-///     - example: Response contains a link fragment `homepage/assets/img/icons/handshake.svg`
-///       with a base url of http://localhost, the following urls would be returned:
-///         - homepage/assets/img/icons/handshake.svg
-///         - homepage/assets/img/icons/
-///         - homepage/assets/img/
-///         - homepage/assets/
-///         - homepage/
-pub async fn get_links(
-    response: &FeroxResponse,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> HashSet<String> {
-    log::trace!(
-        "enter: get_links({}, {:?})",
-        response.url().as_str(),
-        tx_stats
-    );
-
-    let mut links = HashSet::<String>::new();
-
-    let body = response.text();
-
-    for capture in LINKS_REGEX.captures_iter(&body) {
-        // remove single & double quotes from both ends of the capture
-        // capture[0] is the entire match, additional capture groups start at [1]
-        let link = capture[0].trim_matches(|c| c == '\'' || c == '"');
-
-        match Url::parse(link) {
-            Ok(absolute) => {
-                if absolute.domain() != response.url().domain()
-                    || absolute.host() != response.url().host()
-                {
-                    // domains/ips are not the same, don't scan things that aren't part of the original
-                    // target url
-                    continue;
-                }
-
-                add_all_sub_paths(absolute.path(), &response, &mut links);
-            }
-            Err(e) => {
-                // this is the expected error that happens when we try to parse a url fragment
-                //     ex: Url::parse("/login") -> Err("relative URL without a base")
-                // while this is technically an error, these are good results for us
-                if e.to_string().contains("relative URL without a base") {
-                    add_all_sub_paths(link, &response, &mut links);
-                } else {
-                    // unexpected error has occurred
-                    log::error!("Could not parse given url: {}", e);
-                }
-            }
-        }
-    }
-
-    let multiplier = CONFIGURATION.extensions.len().max(1);
-
-    update_stat!(tx_stats, UpdateUsizeField(LinksExtracted, links.len()));
-    update_stat!(
-        tx_stats,
-        UpdateUsizeField(TotalExpected, links.len() * multiplier)
-    );
-
-    log::trace!("exit: get_links -> {:?}", links);
-
-    links
-}
-
-/// take a url fragment like homepage/assets/img/icons/handshake.svg and
-/// incrementally add
-///     - homepage/assets/img/icons/
-///     - homepage/assets/img/
-///     - homepage/assets/
-///     - homepage/
-fn add_all_sub_paths(url_path: &str, response: &FeroxResponse, mut links: &mut HashSet<String>) {
-    log::trace!(
-        "enter: add_all_sub_paths({}, {}, {:?})",
-        url_path,
-        response,
-        links
-    );
-
-    for sub_path in get_sub_paths_from_path(url_path) {
-        log::debug!("Adding {} to {:?}", sub_path, links);
-        add_link_to_set_of_links(&sub_path, &response.url(), &mut links);
-    }
-
-    log::trace!("exit: add_all_sub_paths");
-}
-
-/// Wrapper around link extraction logic
-/// currently used in two places:
-///   - links from response bodys
-///   - links from robots.txt responses
-///
-/// general steps taken:
-///   - create a new Url object based on cli options/args
-///   - check if the new Url has already been seen/scanned -> None
-///   - make a request to the new Url ? -> Some(response) : None
-pub async fn request_feroxresponse_from_new_link(
-    url: &str,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> Option<FeroxResponse> {
-    log::trace!(
-        "enter: request_feroxresponse_from_new_link({}, {:?})",
-        url,
-        tx_stats
-    );
-
-    // create a url based on the given command line options, return None on error
-    let new_url = match format_url(
-        &url,
-        &"",
-        CONFIGURATION.add_slash,
-        &CONFIGURATION.queries,
-        None,
-        tx_stats.clone(),
-    ) {
-        Ok(url) => url,
-        Err(_) => {
-            log::trace!("exit: request_feroxresponse_from_new_link -> None");
-            return None;
-        }
-    };
-
-    if SCANNED_URLS.get_scan_by_url(&new_url.to_string()).is_some() {
-        //we've seen the url before and don't need to scan again
-        log::trace!("exit: request_feroxresponse_from_new_link -> None");
-        return None;
-    }
-
-    // make the request and store the response
-    let new_response = match make_request(&CONFIGURATION.client, &new_url, tx_stats).await {
-        Ok(resp) => resp,
-        Err(_) => {
-            log::trace!("exit: request_feroxresponse_from_new_link -> None");
-            return None;
-        }
-    };
-
-    let new_ferox_response = FeroxResponse::from(new_response, true).await;
-
-    log::trace!(
-        "exit: request_feroxresponse_from_new_link -> {:?}",
-        new_ferox_response
-    );
-    Some(new_ferox_response)
-}
-
-/// helper function that simply requests /robots.txt on the given url's base url
-///
-/// example:
-///     http://localhost/api/users -> http://localhost/robots.txt
-///     
-/// The length of the given path has no effect on what's requested; it's always
-/// base url + /robots.txt
-pub async fn request_robots_txt(
-    base_url: &str,
-    config: &Configuration,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> Option<FeroxResponse> {
-    log::trace!(
-        "enter: get_robots_file({}, CONFIGURATION, {:?})",
-        base_url,
-        tx_stats
-    );
-
-    // more often than not, domain/robots.txt will redirect to www.domain/robots.txt or something
-    // similar; to account for that, create a client that will follow redirects, regardless of
-    // what the user specified for the scanning client. Other than redirects, it will respect
-    // all other user specified settings
-    let follow_redirects = true;
-
-    let proxy = if config.proxy.is_empty() {
-        None
-    } else {
-        Some(config.proxy.as_str())
-    };
-
-    let client = client::initialize(
-        config.timeout,
-        &config.user_agent,
-        follow_redirects,
-        config.insecure,
-        &config.headers,
-        proxy,
-    );
-
-    if let Ok(mut url) = Url::parse(base_url) {
-        url.set_path("/robots.txt"); // overwrite existing path with /robots.txt
-
-        if let Ok(response) = make_request(&client, &url, tx_stats).await {
-            let ferox_response = FeroxResponse::from(response, true).await;
-
-            log::trace!("exit: get_robots_file -> {}", ferox_response);
-            return Some(ferox_response);
-        }
-    }
-
-    None
-}
-
-/// Entry point to perform link extraction from robots.txt
-///
-/// `base_url` can have paths and subpaths, however robots.txt will be requested from the
-/// root of the url
-/// given the url:
-///     http://localhost/stuff/things
-/// this function requests:
-///     http://localhost/robots.txt
-pub async fn extract_robots_txt(
-    base_url: &str,
-    config: &Configuration,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> HashSet<String> {
-    log::trace!(
-        "enter: extract_robots_txt({}, CONFIGURATION, {:?})",
-        base_url,
-        tx_stats
-    );
-    let mut links = HashSet::new();
-
-    if let Some(response) = request_robots_txt(&base_url, &config, tx_stats.clone()).await {
-        for capture in ROBOTS_REGEX.captures_iter(response.text.as_str()) {
-            if let Some(new_path) = capture.name("url_path") {
-                if let Ok(mut new_url) = Url::parse(base_url) {
-                    new_url.set_path(new_path.as_str());
-                    add_all_sub_paths(new_url.path(), &response, &mut links);
-                }
-            }
-        }
-    }
-
-    let multiplier = CONFIGURATION.extensions.len().max(1);
-
-    update_stat!(tx_stats, UpdateUsizeField(LinksExtracted, links.len()));
-    update_stat!(
-        tx_stats,
-        UpdateUsizeField(TotalExpected, links.len() * multiplier)
-    );
-
-    log::trace!("exit: extract_robots_txt -> {:?}", links);
-    links
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::utils::make_request;
-    use crate::FeroxChannel;
-    use httpmock::Method::GET;
-    use httpmock::MockServer;
-    use reqwest::Client;
-    use tokio::sync::mpsc;
-
-    #[test]
-    /// extract sub paths from the given url fragment; expect 4 sub paths and that all are
-    /// in the expected array
-    fn extractor_get_sub_paths_from_path_with_multiple_paths() {
-        let path = "homepage/assets/img/icons/handshake.svg";
-        let paths = get_sub_paths_from_path(&path);
-        let expected = vec![
-            "homepage/",
-            "homepage/assets/",
-            "homepage/assets/img/",
-            "homepage/assets/img/icons/",
-            "homepage/assets/img/icons/handshake.svg",
-        ];
-
-        assert_eq!(paths.len(), expected.len());
-        for expected_path in expected {
-            assert_eq!(paths.contains(&expected_path.to_string()), true);
-        }
-    }
-
-    #[test]
-    /// extract sub paths from the given url fragment; expect 2 sub paths and that all are
-    /// in the expected array. the fragment is wrapped in slashes to ensure no empty strings are
-    /// returned
-    fn extractor_get_sub_paths_from_path_with_enclosing_slashes() {
-        let path = "/homepage/assets/";
-        let paths = get_sub_paths_from_path(&path);
-        let expected = vec!["homepage/", "homepage/assets"];
-
-        assert_eq!(paths.len(), expected.len());
-        for expected_path in expected {
-            assert_eq!(paths.contains(&expected_path.to_string()), true);
-        }
-    }
-
-    #[test]
-    /// extract sub paths from the given url fragment; expect 1 sub path, no forward slashes are
-    /// included
-    fn extractor_get_sub_paths_from_path_with_only_a_word() {
-        let path = "homepage";
-        let paths = get_sub_paths_from_path(&path);
-        let expected = vec!["homepage"];
-
-        assert_eq!(paths.len(), expected.len());
-        for expected_path in expected {
-            assert_eq!(paths.contains(&expected_path.to_string()), true);
-        }
-    }
-
-    #[test]
-    /// extract sub paths from the given url fragment; expect 1 sub path, forward slash removed
-    fn extractor_get_sub_paths_from_path_with_an_absolute_word() {
-        let path = "/homepage";
-        let paths = get_sub_paths_from_path(&path);
-        let expected = vec!["homepage"];
-
-        assert_eq!(paths.len(), expected.len());
-        for expected_path in expected {
-            assert_eq!(paths.contains(&expected_path.to_string()), true);
-        }
-    }
-
-    #[test]
-    /// test that a full url and fragment are joined correctly, then added to the given list
-    /// i.e. the happy path
-    fn extractor_add_link_to_set_of_links_happy_path() {
-        let url = Url::parse("https://localhost").unwrap();
-        let mut links = HashSet::<String>::new();
-        let link = "admin";
-
-        assert_eq!(links.len(), 0);
-        add_link_to_set_of_links(link, &url, &mut links);
-
-        assert_eq!(links.len(), 1);
-        assert!(links.contains("https://localhost/admin"));
-    }
-
-    #[test]
-    /// test that an invalid path fragment doesn't add anything to the set of links
-    fn extractor_add_link_to_set_of_links_with_non_base_url() {
-        let url = Url::parse("https://localhost").unwrap();
-        let mut links = HashSet::<String>::new();
-        let link = "\\\\\\\\";
-
-        assert_eq!(links.len(), 0);
-        add_link_to_set_of_links(link, &url, &mut links);
-
-        assert_eq!(links.len(), 0);
-        assert!(links.is_empty());
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// use make_request to generate a Response, and use the Response to test get_links;
-    /// the response will contain an absolute path to a domain that is not part of the scanned
-    /// domain; expect an empty set returned
-    async fn extractor_get_links_with_absolute_url_that_differs_from_target_domain(
-    ) -> Result<(), Box<dyn std::error::Error>> {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then|{
-            when.method(GET)
-                .path("/some-path");
-            then.status(200)
-                .body("\"http://defintely.not.a.thing.probably.com/homepage/assets/img/icons/handshake.svg\"");
-        });
-
-        let client = Client::new();
-        let url = Url::parse(&srv.url("/some-path")).unwrap();
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        let response = make_request(&client, &url, tx.clone()).await.unwrap();
-
-        let ferox_response = FeroxResponse::from(response, true).await;
-
-        let links = get_links(&ferox_response, tx).await;
-
-        assert!(links.is_empty());
-
-        assert_eq!(mock.hits(), 1);
-        Ok(())
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    /// test that /robots.txt is correctly requested given a base url (happy path)
-    async fn request_robots_txt_with_and_without_proxy() {
-        let srv = MockServer::start();
-
-        let mock = srv.mock(|when, then| {
-            when.method(GET).path("/robots.txt");
-            then.status(200).body("this is a test");
-        });
-
-        let mut config = Configuration::default();
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        request_robots_txt(&srv.url("/api/users/stuff/things"), &config, tx.clone()).await;
-
-        // note: the proxy doesn't actually do anything other than hit a different code branch
-        // in this unit test; it would however have an effect on an integration test
-        config.proxy = srv.url("/ima-proxy");
-
-        request_robots_txt(&srv.url("/api/different/path"), &config, tx).await;
-
-        assert_eq!(mock.hits(), 2);
-    }
-}
--- a/src/extractor/builder.rs
+++ b/src/extractor/builder.rs
@@ -0,0 +1,109 @@
+use super::*;
+use crate::event_handlers::Handles;
+use anyhow::{bail, Result};
+
+/// Regular expression used in [LinkFinder](https://github.com/GerbenJavado/LinkFinder)
+///
+/// Incorporates change from this [Pull Request](https://github.com/GerbenJavado/LinkFinder/pull/66/files)
+pub(super) const LINKFINDER_REGEX: &str = r#"(?:"|')(((?:[a-zA-Z]{1,10}://|//)[^"'/]{1,}\.[a-zA-Z]{2,}[^"']{0,})|((?:/|\.\./|\./)[^"'><,;| *()(%%$^/\\\[\]][^"'><,;|()]{1,})|([a-zA-Z0-9_\-/]{1,}/[a-zA-Z0-9_\-/]{1,}\.(?:[a-zA-Z]{1,4}|action)(?:[\?|#][^"|']{0,}|))|([a-zA-Z0-9_\-/]{1,}/[a-zA-Z0-9_\-/]{3,}(?:[\?|#][^"|']{0,}|))|([a-zA-Z0-9_\-.]{1,}\.(?:php|asp|aspx|jsp|json|action|html|js|txt|xml)(?:[\?|#][^"|']{0,}|)))(?:"|')"#;
+
+/// Regular expression to pull url paths from robots.txt
+///
+/// ref: https://developers.google.com/search/reference/robots_txt
+pub(super) const ROBOTS_TXT_REGEX: &str =
+    r#"(?m)^ *(Allow|Disallow): *(?P<url_path>[a-zA-Z0-9._/?#@!&'()+,;%=-]+?)$"#; // multi-line (?m)
+
+/// Regular expression to filter bad characters from extracted url paths
+///
+/// ref: https://www.rfc-editor.org/rfc/rfc3986#section-2
+pub(super) const URL_CHARS_REGEX: &str = r#"["<>\\^`{|} ]"#;
+
+/// Which type of extraction should be performed
+#[derive(Debug, Copy, Clone)]
+pub enum ExtractionTarget {
+    /// Examine a response body and extract javascript and html links (multiple tags)
+    ResponseBody,
+
+    /// Examine robots.txt (specifically) and extract links
+    RobotsTxt,
+
+    /// Extract all <a> tags from a page
+    DirectoryListing,
+}
+
+/// responsible for building an `Extractor`
+pub struct ExtractorBuilder<'a> {
+    /// Response from which to extract links
+    response: Option<&'a FeroxResponse>,
+
+    /// URL of where to extract links
+    url: String,
+
+    /// Handles object to house the underlying mpsc transmitters
+    handles: Option<Arc<Handles>>,
+
+    /// type of extraction to be performed
+    target: ExtractionTarget,
+}
+
+/// ExtractorBuilder implementation
+impl<'a> Default for ExtractorBuilder<'a> {
+    fn default() -> Self {
+        Self {
+            response: None,
+            url: "".to_string(),
+            handles: None,
+            target: ExtractionTarget::ResponseBody,
+        }
+    }
+}
+
+/// ExtractorBuilder implementation
+impl<'a> ExtractorBuilder<'a> {
+    /// builder call to set `handles`
+    pub fn handles(&mut self, handles: Arc<Handles>) -> &mut Self {
+        self.handles = Some(handles);
+        self
+    }
+
+    /// builder call to set `url`
+    pub fn url(&mut self, url: &str) -> &mut Self {
+        self.url = url.to_string();
+        self
+    }
+
+    /// builder call to set `target`
+    pub fn target(&mut self, target: ExtractionTarget) -> &mut Self {
+        self.target = target;
+        self
+    }
+
+    /// builder call to set `response`
+    pub fn response(&mut self, response: &'a FeroxResponse) -> &mut Self {
+        self.response = Some(response);
+        self
+    }
+
+    /// finalize configuration of `ExtractorBuilder` and return an `Extractor`
+    ///
+    /// requires either `with_url` or `with_response` to have been used in the build process
+    pub fn build(&self) -> Result<Extractor<'a>> {
+        if (self.url.is_empty() && self.response.is_none()) || self.handles.is_none() {
+            bail!("Extractor requires a URL or a FeroxResponse be specified as well as a Handles object")
+        }
+
+        Ok(Extractor {
+            links_regex: Regex::new(LINKFINDER_REGEX).unwrap(),
+            robots_regex: Regex::new(ROBOTS_TXT_REGEX).unwrap(),
+            url_regex: Regex::new(URL_CHARS_REGEX).unwrap(),
+            response: if self.response.is_some() {
+                Some(self.response.unwrap())
+            } else {
+                None
+            },
+            url: self.url.to_owned(),
+            handles: self.handles.as_ref().unwrap().clone(),
+            target: self.target,
+        })
+    }
+}
--- a/src/extractor/container.rs
+++ b/src/extractor/container.rs
@@ -0,0 +1,658 @@
+use super::*;
+use crate::{
+    client,
+    event_handlers::{
+        Command::{AddError, AddToUsizeField},
+        Handles,
+    },
+    scan_manager::ScanOrder,
+    statistics::{
+        StatError::Other,
+        StatField::{LinksExtracted, TotalExpected},
+    },
+    url::FeroxUrl,
+    utils::{logged_request, make_request, send_try_recursion_command, should_deny_url},
+    ExtractionResult, DEFAULT_METHOD,
+};
+use anyhow::{bail, Context, Result};
+use reqwest::{Client, StatusCode, Url};
+use scraper::{Html, Selector};
+use std::{borrow::Cow, collections::HashSet};
+
+/// Whether an active scan is recursive or not
+#[derive(Debug)]
+enum RecursionStatus {
+    /// Scan is recursive
+    Recursive,
+
+    /// Scan is not recursive
+    NotRecursive,
+}
+
+/// Handles all logic related to extracting links from requested source code
+#[derive(Debug)]
+pub struct Extractor<'a> {
+    /// `LINKFINDER_REGEX` as a regex::Regex type
+    pub(super) links_regex: Regex,
+
+    /// `ROBOTS_TXT_REGEX` as a regex::Regex type
+    pub(super) robots_regex: Regex,
+
+    /// regex to validate a url
+    pub(super) url_regex: Regex,
+
+    /// Response from which to extract links
+    pub(super) response: Option<&'a FeroxResponse>,
+
+    /// URL of where to extract links
+    pub(super) url: String,
+
+    /// Handles object to house the underlying mpsc transmitters
+    pub(super) handles: Arc<Handles>,
+
+    /// type of extraction to be performed
+    pub(super) target: ExtractionTarget,
+}
+
+/// Extractor implementation
+impl<'a> Extractor<'a> {
+    /// perform extraction from the given target and return any links found
+    pub async fn extract(&self) -> Result<ExtractionResult> {
+        log::trace!(
+            "enter: extract({:?}) (this fn has no associated trace exit msg)",
+            self.target
+        );
+        match self.target {
+            ExtractionTarget::ResponseBody => Ok(self.extract_from_body().await?),
+            ExtractionTarget::RobotsTxt => Ok(self.extract_from_robots().await?),
+            ExtractionTarget::DirectoryListing => Ok(self.extract_from_dir_listing().await?),
+        }
+    }
+
+    /// wrapper around logic that performs the following:
+    /// - parses `url_to_parse`
+    /// - bails if the parsed url doesn't belong to the original host/domain
+    /// - otherwise, calls `add_all_sub_paths` with the parsed result
+    fn parse_url_and_add_subpaths(
+        &self,
+        url_to_parse: &str,
+        original_url: &Url,
+        links: &mut HashSet<String>,
+    ) -> Result<()> {
+        log::trace!("enter: parse_url_and_add_subpaths({:?})", links);
+
+        match Url::parse(url_to_parse) {
+            Ok(absolute) => {
+                if absolute.domain() != original_url.domain()
+                    || absolute.host() != original_url.host()
+                {
+                    // domains/ips are not the same, don't scan things that aren't part of the original
+                    // target url
+                    bail!("parsed url does not belong to original domain/host");
+                }
+
+                if self.add_all_sub_paths(absolute.path(), links).is_err() {
+                    log::warn!("could not add sub-paths from {} to {:?}", absolute, links);
+                }
+            }
+            Err(e) => {
+                // this is the expected error that happens when we try to parse a url fragment
+                //     ex: Url::parse("/login") -> Err("relative URL without a base")
+                // while this is technically an error, these are good results for us
+                if e.to_string().contains("relative URL without a base") {
+                    if self.add_all_sub_paths(url_to_parse, links).is_err() {
+                        log::warn!(
+                            "could not add sub-paths from {} to {:?}",
+                            url_to_parse,
+                            links
+                        );
+                    }
+                } else {
+                    // unexpected error has occurred
+                    log::warn!("Could not parse given url: {}", e);
+                    self.handles.stats.send(AddError(Other)).unwrap_or_default();
+                }
+            }
+        }
+
+        log::trace!("exit: parse_url_and_add_subpaths");
+        Ok(())
+    }
+
+    /// given a set of links from a normal http body response, task the request handler to make
+    /// the requests
+    pub async fn request_links(&mut self, links: HashSet<String>) -> Result<()> {
+        log::trace!("enter: request_links({:?})", links);
+
+        if links.is_empty() {
+            return Ok(());
+        }
+
+        let recursive = if self.handles.config.no_recursion {
+            RecursionStatus::NotRecursive
+        } else {
+            RecursionStatus::Recursive
+        };
+
+        let scanned_urls = self.handles.ferox_scans()?;
+        self.update_stats(links.len())?;
+
+        for link in links {
+            let mut resp = match self.request_link(&link).await {
+                Ok(resp) => resp,
+                Err(_) => continue,
+            };
+
+            // filter if necessary
+            if self
+                .handles
+                .filters
+                .data
+                .should_filter_response(&resp, self.handles.stats.tx.clone())
+            {
+                continue;
+            }
+
+            // request and report assumed file
+            if resp.is_file() || !resp.is_directory() {
+                log::debug!("Extracted File: {}", resp);
+
+                scanned_urls.add_file_scan(resp.url().as_str(), ScanOrder::Latest);
+
+                if self.handles.config.collect_extensions {
+                    resp.parse_extension(self.handles.clone())?;
+                }
+
+                if let Err(e) = resp.send_report(self.handles.output.tx.clone()) {
+                    log::warn!("Could not send FeroxResponse to output handler: {}", e);
+                }
+
+                continue;
+            }
+
+            if matches!(recursive, RecursionStatus::Recursive) {
+                log::debug!("Extracted Directory: {}", resp);
+
+                if !resp.url().as_str().ends_with('/')
+                    && (resp.status().is_success()
+                        || matches!(resp.status(), &StatusCode::FORBIDDEN))
+                {
+                    // if the url doesn't end with a /
+                    // and the response code is either a 2xx or 403
+
+                    // since all of these are 2xx or 403, recursion is only attempted if the
+                    // url ends in a /. I am actually ok with adding the slash and not
+                    // adding it, as both have merit.  Leaving it in for now to see how
+                    // things turn out (current as of: v1.1.0)
+                    resp.set_url(&format!("{}/", resp.url()));
+                }
+
+                if self.handles.config.filter_status.is_empty() {
+                    // -C wasn't used, so -s is the only 'filter' left to account for
+                    if self
+                        .handles
+                        .config
+                        .status_codes
+                        .contains(&resp.status().as_u16())
+                    {
+                        send_try_recursion_command(self.handles.clone(), resp).await?;
+                    }
+                } else {
+                    // -C was used, that means the filters above would have removed
+                    // those responses, and anything else should be let through
+                    send_try_recursion_command(self.handles.clone(), resp).await?;
+                }
+            }
+        }
+        log::trace!("exit: request_links");
+        Ok(())
+    }
+
+    /// wrapper around link extraction via html attributes
+    fn extract_all_links_from_html_tags(
+        &self,
+        resp_url: &Url,
+        links: &mut HashSet<String>,
+        html: &Html,
+    ) {
+        self.extract_links_by_attr(resp_url, links, html, "a", "href");
+        self.extract_links_by_attr(resp_url, links, html, "img", "src");
+        self.extract_links_by_attr(resp_url, links, html, "form", "action");
+        self.extract_links_by_attr(resp_url, links, html, "script", "src");
+        self.extract_links_by_attr(resp_url, links, html, "iframe", "src");
+        self.extract_links_by_attr(resp_url, links, html, "div", "src");
+        self.extract_links_by_attr(resp_url, links, html, "frame", "src");
+        self.extract_links_by_attr(resp_url, links, html, "embed", "src");
+        self.extract_links_by_attr(resp_url, links, html, "link", "href");
+    }
+
+    /// Given the body of a `reqwest::Response`, perform the following actions
+    ///   - parse the body for links using the linkfinder regex
+    ///   - for every link found take its url path and parse each sub-path
+    ///     - example: Response contains a link fragment `homepage/assets/img/icons/handshake.svg`
+    ///       with a base url of http://localhost, the following urls would be returned:
+    ///         - homepage/assets/img/icons/handshake.svg
+    ///         - homepage/assets/img/icons/
+    ///         - homepage/assets/img/
+    ///         - homepage/assets/
+    ///         - homepage/
+    fn extract_all_links_from_javascript(
+        &self,
+        response_body: &str,
+        response_url: &Url,
+        links: &mut HashSet<String>,
+    ) {
+        log::trace!(
+            "enter: extract_all_links_from_javascript(html body..., {}, {:?})",
+            response_url.as_str(),
+            links
+        );
+
+        for capture in self.links_regex.captures_iter(response_body) {
+            // remove single & double quotes from both ends of the capture
+            // capture[0] is the entire match, additional capture groups start at [1]
+            let link = capture[0].trim_matches(|c| c == '\'' || c == '"');
+
+            if self
+                .parse_url_and_add_subpaths(link, response_url, links)
+                .is_err()
+            {
+                // purposely not logging the error here, due to the frequency with which it gets hit
+            }
+        }
+
+        log::trace!("exit: extract_all_links_from_javascript");
+    }
+
+    /// take a url fragment like homepage/assets/img/icons/handshake.svg and
+    /// incrementally add
+    ///   - homepage/assets/img/icons/
+    ///   - homepage/assets/img/
+    ///   - homepage/assets/
+    ///   - homepage/
+    fn add_all_sub_paths(&self, url_path: &str, links: &mut HashSet<String>) -> Result<()> {
+        log::trace!("enter: add_all_sub_paths({}, {:?})", url_path, links);
+
+        for sub_path in self.get_sub_paths_from_path(url_path) {
+            self.add_link_to_set_of_links(&sub_path, links)?;
+        }
+
+        log::trace!("exit: add_all_sub_paths");
+        Ok(())
+    }
+
+    /// given a url path, trim whitespace, remove slashes, and queries/fragments; return the
+    /// normalized string
+    pub(super) fn normalize_url_path(&self, path: &str) -> String {
+        log::trace!("enter: normalize_url_path({})", path);
+
+        // remove whitespace and leading '/'
+        let path_str: String = path
+            .trim()
+            .trim_start_matches('/')
+            .chars()
+            .filter(|char| !char.is_whitespace())
+            .collect();
+
+        // snippets from rfc-3986:
+        //
+        //          foo://example.com:8042/over/there?name=ferret#nose
+        //          \_/   \______________/\_________/ \_________/ \__/
+        //           |           |            |            |        |
+        //        scheme     authority       path        query   fragment
+        //
+        // The path component is terminated
+        //    by the first question mark ("?") or number sign ("#") character, or
+        //    by the end of the URI.
+        //
+        // The query component is indicated by the first question
+        //    mark ("?") character and terminated by a number sign ("#") character
+        //    or by the end of the URI.
+        let (path_str, _discarded) = path_str
+            .split_once('?')
+            // if there isn't a '?', try to remove a fragment
+            .unwrap_or_else(|| {
+                // if there isn't a '#', return (original, empty)
+                path_str.split_once('#').unwrap_or((&path_str, ""))
+            });
+
+        log::trace!("exit: normalize_url_path -> {}", path_str);
+        path_str.into()
+    }
+
+    /// Iterate over a given path, return a list of every sub-path found
+    ///
+    /// example: `path` contains a link fragment `homepage/assets/img/icons/handshake.svg`
+    /// the following fragments would be returned:
+    ///   - homepage/assets/img/icons/handshake.svg
+    ///   - homepage/assets/img/icons/
+    ///   - homepage/assets/img/
+    ///   - homepage/assets/
+    ///   - homepage/
+    pub(super) fn get_sub_paths_from_path(&self, path: &str) -> Vec<String> {
+        log::trace!("enter: get_sub_paths_from_path({})", path);
+        let mut paths = vec![];
+
+        let normalized_path = self.normalize_url_path(path);
+
+        // filter out any empty strings caused by .split
+        let mut parts: Vec<Cow<_>> = normalized_path
+            .split('/')
+            .map(|s| self.url_regex.replace_all(s, ""))
+            .filter(|s| !s.is_empty())
+            .collect();
+
+        let length = parts.len();
+
+        for i in 0..length {
+            // iterate over all parts of the path
+            if parts.is_empty() {
+                // pop left us with an empty vector, we're done
+                break;
+            }
+
+            let mut possible_path = parts.join("/");
+
+            if possible_path.is_empty() {
+                // .join can result in an empty string, which we don't need, ignore
+                continue;
+            }
+
+            if i > 0 {
+                // this isn't the last index of the parts array
+                // ex: /buried/misc/stupidfile.php
+                // this block skips the file but sees all parent folders
+                possible_path = format!("{}/", possible_path);
+            }
+
+            paths.push(possible_path); // good sub-path found
+            parts.pop(); // use .pop() to remove the last part of the path and continue iteration
+        }
+
+        log::trace!("exit: get_sub_paths_from_path -> {:?}", paths);
+        paths
+    }
+
+    /// simple helper to stay DRY, tries to join a url + fragment and add it to the `links` HashSet
+    pub(super) fn add_link_to_set_of_links(
+        &self,
+        link: &str,
+        links: &mut HashSet<String>,
+    ) -> Result<()> {
+        log::trace!("enter: add_link_to_set_of_links({}, {:?})", link, links);
+
+        let old_url = match self.target {
+            ExtractionTarget::ResponseBody | ExtractionTarget::DirectoryListing => {
+                self.response.unwrap().url().clone()
+            }
+            ExtractionTarget::RobotsTxt => match Url::parse(&self.url) {
+                Ok(u) => u,
+                Err(e) => {
+                    bail!("Could not parse {}: {}", self.url, e);
+                }
+            },
+        };
+
+        let new_url = old_url
+            .join(link)
+            .with_context(|| format!("Could not join {} with {}", old_url, link))?;
+
+        if old_url.domain() != new_url.domain() || old_url.host() != old_url.host() {
+            // domains/ips are not the same, don't scan things that aren't part of the original
+            // target url
+            log::debug!(
+                "Skipping {} because it's not part of the original target",
+                new_url
+            );
+            log::trace!("exit: add_link_to_set_of_links");
+            return Ok(());
+        }
+
+        links.insert(new_url.to_string());
+
+        log::trace!("exit: add_link_to_set_of_links");
+
+        Ok(())
+    }
+
+    /// Wrapper around link extraction logic
+    ///   - create a new Url object based on cli options/args
+    ///   - check if the new Url has already been seen/scanned -> None
+    ///   - make a request to the new Url ? -> Some(response) : None
+    pub(super) async fn request_link(&self, url: &str) -> Result<FeroxResponse> {
+        log::trace!("enter: request_link({})", url);
+
+        let ferox_url = FeroxUrl::from_string(url, self.handles.clone());
+
+        // create a url based on the given command line options
+        let new_url = ferox_url.format("", None)?;
+
+        let scanned_urls = self.handles.ferox_scans()?;
+
+        if scanned_urls.get_scan_by_url(new_url.as_ref()).is_some() {
+            //we've seen the url before and don't need to scan again
+            log::trace!("exit: request_link -> None");
+            bail!("previously seen url");
+        }
+
+        if (!self.handles.config.url_denylist.is_empty()
+            || !self.handles.config.regex_denylist.is_empty())
+            && should_deny_url(&new_url, self.handles.clone())?
+        {
+            // can't allow a denied url to be requested
+            bail!(
+                "prevented request to {} due to {:?} || {:?}",
+                url,
+                self.handles.config.url_denylist,
+                self.handles.config.regex_denylist,
+            );
+        }
+
+        // make the request and store the response
+        let new_response =
+            logged_request(&new_url, DEFAULT_METHOD, None, self.handles.clone()).await?;
+
+        let new_ferox_response = FeroxResponse::from(
+            new_response,
+            url,
+            DEFAULT_METHOD,
+            self.handles.config.output_level,
+        )
+        .await;
+
+        log::trace!("exit: request_link -> {:?}", new_ferox_response);
+
+        Ok(new_ferox_response)
+    }
+
+    /// Entry point to perform link extraction from robots.txt
+    ///
+    /// `base_url` can have paths and subpaths, however robots.txt will be requested from the
+    /// root of the url
+    /// given the url:
+    ///     http://localhost/stuff/things
+    /// this function requests:
+    ///     http://localhost/robots.txt
+    pub(super) async fn extract_from_robots(&self) -> Result<ExtractionResult> {
+        log::trace!("enter: extract_robots_txt");
+
+        let mut result: HashSet<_> = ExtractionResult::new();
+
+        // request
+        let response = self.make_extract_request("/robots.txt").await?;
+        let body = response.text();
+
+        for capture in self.robots_regex.captures_iter(body) {
+            if let Some(new_path) = capture.name("url_path") {
+                let mut new_url = Url::parse(&self.url)?;
+
+                new_url.set_path(new_path.as_str());
+
+                if self.add_all_sub_paths(new_url.path(), &mut result).is_err() {
+                    log::warn!("could not add sub-paths from {} to {:?}", new_url, result);
+                }
+            }
+        }
+
+        log::trace!("exit: extract_robots_txt -> {:?}", result);
+        Ok(result)
+    }
+
+    /// outer-most wrapper for parsing html response bodies in search of additional content.
+    /// performs the following high-level steps:
+    /// - requests the page, if necessary
+    /// - checks the page to see if directory listing is enabled and sucks up all the links, if so
+    /// - uses the linkfinder regex to grab links from embedded javascript/javascript files
+    /// - extracts many different types of link sources from the html itself
+    pub(super) async fn extract_from_body(&self) -> Result<ExtractionResult> {
+        log::trace!("enter: extract_from_body");
+
+        let mut result = ExtractionResult::new();
+
+        let response = self.response.unwrap();
+        let resp_url = response.url();
+        let body = response.text();
+        let html = Html::parse_document(body);
+
+        // extract links from html tags/attributes and embedded javascript
+        self.extract_all_links_from_html_tags(resp_url, &mut result, &html);
+        self.extract_all_links_from_javascript(body, resp_url, &mut result);
+
+        log::trace!("exit: extract_from_body -> {:?}", result);
+        Ok(result)
+    }
+
+    /// parses html response bodies in search of <a> tags.
+    ///
+    /// the assumption is that directory listing is turned on and this extraction target simply
+    /// scoops up all the links for the given directory. The test to detect a directory listing
+    /// is located in `HeuristicTests`
+    pub async fn extract_from_dir_listing(&self) -> Result<ExtractionResult> {
+        log::trace!("enter: extract_from_dir_listing");
+
+        let mut result = ExtractionResult::new();
+
+        let response = self.response.unwrap();
+        let html = Html::parse_document(response.text());
+
+        self.extract_links_by_attr(response.url(), &mut result, &html, "a", "href");
+
+        log::trace!("exit: extract_from_dir_listing -> {:?}", result);
+        Ok(result)
+    }
+
+    /// simple helper to get html links by tag/attribute and add it to the `links` HashSet
+    fn extract_links_by_attr(
+        &self,
+        resp_url: &Url,
+        links: &mut HashSet<String>,
+        html: &Html,
+        html_tag: &str,
+        html_attr: &str,
+    ) {
+        log::trace!("enter: extract_links_by_attr");
+
+        let selector = Selector::parse(html_tag).unwrap();
+
+        let tags = html
+            .select(&selector)
+            .filter(|a| a.value().attrs().any(|attr| attr.0 == html_attr));
+
+        for tag in tags {
+            if let Some(link) = tag.value().attr(html_attr) {
+                log::debug!("Parsed link \"{}\" from {}", link, resp_url.as_str());
+
+                if self
+                    .parse_url_and_add_subpaths(link, resp_url, links)
+                    .is_err()
+                {
+                    log::debug!("link didn't belong to the target domain/host: {}", link);
+                }
+            }
+        }
+
+        log::trace!("exit: extract_links_by_attr");
+    }
+
+    /// helper function that simply requests at <location> on the given url's base url
+    ///
+    /// example:
+    ///     http://localhost/api/users -> http://localhost/<location>
+    pub(super) async fn make_extract_request(&self, location: &str) -> Result<FeroxResponse> {
+        log::trace!("enter: make_extract_request");
+
+        // need late binding here to avoid 'creates a temporary which is freed...' in the
+        // `let ... if` below to avoid cloning the client out of config
+        let mut client = Client::new();
+
+        if location == "/robots.txt" {
+            // more often than not, domain/robots.txt will redirect to www.domain/robots.txt or something
+            // similar; to account for that, create a client that will follow redirects, regardless of
+            // what the user specified for the scanning client. Other than redirects, it will respect
+            // all other user specified settings
+            let follow_redirects = true;
+
+            let proxy = if self.handles.config.proxy.is_empty() {
+                None
+            } else {
+                Some(self.handles.config.proxy.as_str())
+            };
+
+            client = client::initialize(
+                self.handles.config.timeout,
+                &self.handles.config.user_agent,
+                follow_redirects,
+                self.handles.config.insecure,
+                &self.handles.config.headers,
+                proxy,
+            )?;
+        }
+
+        let client = if location != "/robots.txt" {
+            &self.handles.config.client
+        } else {
+            &client
+        };
+
+        let mut url = Url::parse(&self.url)?;
+        url.set_path(location); // overwrite existing path
+
+        // purposefully not using logged_request here due to using the special client
+        let response = make_request(
+            client,
+            &url,
+            DEFAULT_METHOD,
+            None,
+            self.handles.config.output_level,
+            &self.handles.config,
+            self.handles.stats.tx.clone(),
+        )
+        .await?;
+
+        let ferox_response = FeroxResponse::from(
+            response,
+            &self.url,
+            DEFAULT_METHOD,
+            self.handles.config.output_level,
+        )
+        .await;
+        // note: don't call parse_extension here. If we call it here, it gets called on robots.txt
+
+        log::trace!("exit: make_extract_request -> {}", ferox_response);
+        Ok(ferox_response)
+    }
+
+    /// update total number of links extracted and expected responses
+    fn update_stats(&self, num_links: usize) -> Result<()> {
+        let multiplier = self.handles.expected_num_requests_multiplier();
+
+        self.handles
+            .stats
+            .send(AddToUsizeField(LinksExtracted, num_links))?;
+        self.handles
+            .stats
+            .send(AddToUsizeField(TotalExpected, num_links * multiplier))?;
+
+        Ok(())
+    }
+}
--- a/src/extractor/mod.rs
+++ b/src/extractor/mod.rs
@@ -0,0 +1,13 @@
+//! extract links from html source and robots.txt
+mod builder;
+mod container;
+#[cfg(test)]
+mod tests;
+
+pub use self::builder::ExtractionTarget;
+pub use self::builder::ExtractorBuilder;
+pub use self::container::Extractor;
+
+use crate::response::FeroxResponse;
+use regex::Regex;
+use std::sync::Arc;
--- a/src/extractor/tests.rs
+++ b/src/extractor/tests.rs
@@ -0,0 +1,400 @@
+use super::builder::{LINKFINDER_REGEX, ROBOTS_TXT_REGEX, URL_CHARS_REGEX};
+use super::*;
+use crate::config::{Configuration, OutputLevel};
+use crate::scan_manager::ScanOrder;
+use crate::{
+    event_handlers::Handles, scan_manager::FeroxScans, utils::make_request, Command, FeroxChannel,
+    DEFAULT_METHOD,
+};
+use anyhow::Result;
+use httpmock::{Method::GET, MockServer};
+use lazy_static::lazy_static;
+use reqwest::{Client, StatusCode, Url};
+use std::collections::HashSet;
+use tokio::sync::mpsc;
+
+lazy_static! {
+    /// Extractor for testing robots.txt
+    static ref ROBOTS_EXT: Extractor<'static> = setup_extractor(ExtractionTarget::RobotsTxt, Arc::new(FeroxScans::default()));
+
+    /// Extractor for testing response bodies
+    static ref BODY_EXT: Extractor<'static> = setup_extractor(ExtractionTarget::ResponseBody, Arc::new(FeroxScans::default()));
+
+    /// Extractor for testing paring html
+    static ref PARSEHTML_EXT: Extractor<'static> = setup_extractor(ExtractionTarget::DirectoryListing, Arc::new(FeroxScans::default()));
+
+    /// FeroxResponse for Extractor
+    static ref RESPONSE: FeroxResponse = get_test_response();
+}
+
+/// constructor for the default FeroxResponse used during testing
+fn get_test_response() -> FeroxResponse {
+    let mut resp = FeroxResponse::default();
+    resp.set_text("nulla pharetra diam sit amet nisl suscipit adipiscing bibendum est");
+    resp
+}
+
+/// creates a single extractor that can be used to test standalone functions
+fn setup_extractor(target: ExtractionTarget, scanned_urls: Arc<FeroxScans>) -> Extractor<'static> {
+    let mut builder = ExtractorBuilder::default();
+
+    let builder = match target {
+        ExtractionTarget::ResponseBody => builder
+            .target(ExtractionTarget::ResponseBody)
+            .response(&RESPONSE),
+        ExtractionTarget::RobotsTxt => builder
+            .url("http://localhost")
+            .target(ExtractionTarget::RobotsTxt),
+        ExtractionTarget::DirectoryListing => builder
+            .url("http://localhost")
+            .target(ExtractionTarget::DirectoryListing),
+    };
+
+    let config = Arc::new(Configuration::new().unwrap());
+    let handles = Arc::new(Handles::for_testing(Some(scanned_urls), Some(config)).0);
+
+    builder.handles(handles).build().unwrap()
+}
+
+#[test]
+/// extract sub paths from the given url fragment; expect 4 sub paths and that all are
+/// in the expected array
+fn extractor_get_sub_paths_from_path_with_multiple_paths() {
+    let path = "homepage/assets/img/icons/handshake.svg";
+    let r_paths = ROBOTS_EXT.get_sub_paths_from_path(path);
+    let b_paths = BODY_EXT.get_sub_paths_from_path(path);
+    let expected = vec![
+        "homepage/",
+        "homepage/assets/",
+        "homepage/assets/img/",
+        "homepage/assets/img/icons/",
+        "homepage/assets/img/icons/handshake.svg",
+    ];
+
+    assert_eq!(r_paths.len(), expected.len());
+    assert_eq!(b_paths.len(), expected.len());
+    for expected_path in expected {
+        assert!(r_paths.contains(&expected_path.to_string()));
+        assert!(b_paths.contains(&expected_path.to_string()));
+    }
+}
+
+#[test]
+/// extract sub paths from the given url fragment; expect 2 sub paths and that all are
+/// in the expected array. the fragment is wrapped in slashes to ensure no empty strings are
+/// returned
+fn extractor_get_sub_paths_from_path_with_enclosing_slashes() {
+    let path = "/homepage/assets/";
+    let r_paths = ROBOTS_EXT.get_sub_paths_from_path(path);
+    let b_paths = BODY_EXT.get_sub_paths_from_path(path);
+    let expected = vec!["homepage/", "homepage/assets"];
+
+    assert_eq!(r_paths.len(), expected.len());
+    assert_eq!(b_paths.len(), expected.len());
+    for expected_path in expected {
+        assert!(r_paths.contains(&expected_path.to_string()));
+        assert!(b_paths.contains(&expected_path.to_string()));
+    }
+}
+
+#[test]
+/// extract sub paths from the given url fragment; expect 1 sub path, no forward slashes are
+/// included
+fn extractor_get_sub_paths_from_path_with_only_a_word() {
+    let path = "homepage";
+    let r_paths = ROBOTS_EXT.get_sub_paths_from_path(path);
+    let b_paths = BODY_EXT.get_sub_paths_from_path(path);
+    let expected = vec!["homepage"];
+
+    assert_eq!(r_paths.len(), expected.len());
+    assert_eq!(b_paths.len(), expected.len());
+    for expected_path in expected {
+        assert!(r_paths.contains(&expected_path.to_string()));
+        assert!(b_paths.contains(&expected_path.to_string()));
+    }
+}
+
+#[test]
+/// extract sub paths from the given url fragment; expect 1 sub path, forward slash removed
+fn extractor_get_sub_paths_from_path_with_an_absolute_word() {
+    let path = "/homepage";
+    let r_paths = ROBOTS_EXT.get_sub_paths_from_path(path);
+    let b_paths = BODY_EXT.get_sub_paths_from_path(path);
+    let expected = vec!["homepage"];
+
+    assert_eq!(r_paths.len(), expected.len());
+    assert_eq!(b_paths.len(), expected.len());
+    for expected_path in expected {
+        assert!(r_paths.contains(&expected_path.to_string()));
+        assert!(b_paths.contains(&expected_path.to_string()));
+    }
+}
+
+#[test]
+/// test that an ExtractorBuilder without a FeroxResponse and without a URL bails
+fn extractor_builder_bails_when_neither_required_field_is_set() {
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let extractor = ExtractorBuilder::default()
+        .url("")
+        .target(ExtractionTarget::RobotsTxt)
+        .handles(handles)
+        .build();
+
+    assert!(extractor.is_err());
+}
+
+#[test]
+/// Extractor with a non-base url bails
+fn extractor_with_non_base_url_bails() -> Result<()> {
+    let mut links = HashSet::<String>::new();
+    let link = "admin";
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let extractor = ExtractorBuilder::default()
+        .url("\\\\\\")
+        .handles(handles)
+        .target(ExtractionTarget::RobotsTxt)
+        .build()?;
+
+    let result = extractor.add_link_to_set_of_links(link, &mut links);
+
+    assert!(result.is_err());
+    Ok(())
+}
+
+#[test]
+/// test that a full url and fragment are joined correctly, then added to the given list
+/// i.e. the happy path
+fn extractor_add_link_to_set_of_links_happy_path() {
+    let mut r_links = HashSet::<String>::new();
+    let r_link = "admin";
+    let mut b_links = HashSet::<String>::new();
+    let b_link = "shmadmin";
+
+    assert_eq!(r_links.len(), 0);
+    ROBOTS_EXT
+        .add_link_to_set_of_links(r_link, &mut r_links)
+        .unwrap();
+
+    assert_eq!(r_links.len(), 1);
+    assert!(r_links.contains("http://localhost/admin"));
+
+    assert_eq!(b_links.len(), 0);
+
+    BODY_EXT
+        .add_link_to_set_of_links(b_link, &mut b_links)
+        .unwrap();
+
+    assert_eq!(b_links.len(), 1);
+    assert!(b_links.contains("http://localhost/shmadmin"));
+}
+
+#[test]
+/// test that an invalid path fragment doesn't add anything to the set of links
+fn extractor_add_link_to_set_of_links_with_non_base_url() {
+    let mut links = HashSet::<String>::new();
+    let link = "\\\\\\\\";
+    assert_eq!(links.len(), 0);
+    assert!(ROBOTS_EXT
+        .add_link_to_set_of_links(link, &mut links)
+        .is_err());
+    assert!(BODY_EXT.add_link_to_set_of_links(link, &mut links).is_err());
+
+    assert_eq!(links.len(), 0);
+    assert!(links.is_empty());
+}
+
+#[test]
+/// test for filtering queries and fragments
+fn normalize_url_path_filters_queries_and_fragments() {
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+    let extractor = ExtractorBuilder::default()
+        .url("doesnt matter")
+        .target(ExtractionTarget::RobotsTxt)
+        .handles(handles)
+        .build()
+        .unwrap();
+
+    let test_strings = [
+        "over/there?name=ferret#nose",
+        "over/there?name=ferret",
+        "over/there#nose",
+        "over/there",
+        "over/there?name#nose",
+        "over/there?name",
+        "   over/there?name=ferret#nose  ",
+        "over/there?name=ferret   ",
+        "   over/there#nose",
+    ];
+    test_strings.iter().for_each(|&ts| {
+        let normed = extractor.normalize_url_path(ts);
+        assert_eq!(normed, "over/there");
+    });
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// use make_request to generate a Response, and use the Response to test get_links;
+/// the response will contain an absolute path to a domain that is not part of the scanned
+/// domain; expect an empty set returned
+async fn extractor_get_links_with_absolute_url_that_differs_from_target_domain() -> Result<()> {
+    let (tx_stats, _): FeroxChannel<Command> = mpsc::unbounded_channel();
+
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/some-path");
+        then.status(200).body(
+            "\"http://definitely.not.a.thing.probably.com/homepage/assets/img/icons/handshake.svg\"",
+        );
+    });
+
+    let client = Client::new();
+    let url = Url::parse(&srv.url("/some-path")).unwrap();
+    let config = Configuration::new().unwrap();
+
+    let response = make_request(
+        &client,
+        &url,
+        DEFAULT_METHOD,
+        None,
+        OutputLevel::Default,
+        &config,
+        tx_stats.clone(),
+    )
+    .await
+    .unwrap();
+    let (handles, _rx) = Handles::for_testing(None, None);
+
+    let handles = Arc::new(handles);
+    let ferox_response =
+        FeroxResponse::from(response, &srv.url(""), DEFAULT_METHOD, OutputLevel::Default).await;
+
+    let extractor = Extractor {
+        links_regex: Regex::new(LINKFINDER_REGEX).unwrap(),
+        robots_regex: Regex::new(ROBOTS_TXT_REGEX).unwrap(),
+        url_regex: Regex::new(URL_CHARS_REGEX).unwrap(),
+        response: Some(&ferox_response),
+        url: String::new(),
+        target: ExtractionTarget::ResponseBody,
+        handles: handles.clone(),
+    };
+
+    let links = extractor.extract_from_body().await?;
+
+    assert!(links.is_empty());
+    assert_eq!(mock.hits(), 1);
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test that /robots.txt is correctly requested given a base url (happy path)
+async fn request_robots_txt_without_proxy() -> Result<()> {
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/robots.txt");
+        then.status(200).body("this is a test");
+    });
+
+    let extractor = Extractor {
+        links_regex: Regex::new(LINKFINDER_REGEX).unwrap(),
+        robots_regex: Regex::new(ROBOTS_TXT_REGEX).unwrap(),
+        url_regex: Regex::new(URL_CHARS_REGEX).unwrap(),
+        response: None,
+        url: srv.url("/api/users/stuff/things"),
+        target: ExtractionTarget::RobotsTxt,
+        handles,
+    };
+
+    let resp = extractor.make_extract_request("/robots.txt").await?;
+
+    assert!(matches!(resp.status(), &StatusCode::OK));
+    println!("{}", resp);
+    assert_eq!(resp.content_length(), 14);
+    assert_eq!(mock.hits(), 1);
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// test that /robots.txt is correctly requested given a base url (happy path) when a proxy is used
+async fn request_robots_txt_with_proxy() -> Result<()> {
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+    let mut config = Configuration::new()?;
+
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/robots.txt");
+        then.status(200).body("this is also a test");
+    });
+
+    // note: the proxy doesn't actually do anything other than hit a different code branch
+    // in this unit test; it would however have an effect on an integration test
+    config.proxy = srv.url("/ima-proxy");
+    config.no_recursion = true;
+
+    let extractor = ExtractorBuilder::default()
+        .url(&srv.url("/api/different/path"))
+        .target(ExtractionTarget::RobotsTxt)
+        .handles(handles)
+        .build()?;
+
+    let resp = extractor.make_extract_request("/robots.txt").await?;
+
+    assert!(matches!(resp.status(), &StatusCode::OK));
+    assert_eq!(resp.content_length(), 19);
+    assert_eq!(mock.hits(), 1);
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// request_link's happy path, expect back a FeroxResponse
+async fn request_link_happy_path() -> Result<()> {
+    let srv = MockServer::start();
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path("/login.php");
+        then.status(200).body("this is a test");
+    });
+
+    let r_resp = ROBOTS_EXT.request_link(&srv.url("/login.php")).await?;
+    let b_resp = BODY_EXT.request_link(&srv.url("/login.php")).await?;
+
+    assert!(matches!(r_resp.status(), &StatusCode::OK));
+    assert!(matches!(b_resp.status(), &StatusCode::OK));
+    assert_eq!(r_resp.content_length(), 14);
+    assert_eq!(b_resp.content_length(), 14);
+    assert_eq!(mock.hits(), 2);
+    Ok(())
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// request_link should bail in the event that the url is already in scanned_urls
+async fn request_link_bails_on_seen_url() -> Result<()> {
+    let url = "/unique-for-this-test.php";
+    let srv = MockServer::start();
+    let served = srv.url(url);
+
+    let mock = srv.mock(|when, then| {
+        when.method(GET).path(url);
+        then.status(200)
+            .body("this is a unique test, don't reuse the endpoint");
+    });
+
+    let scans = Arc::new(FeroxScans::default());
+    scans.add_file_scan(&served, ScanOrder::Latest);
+
+    let robots = setup_extractor(ExtractionTarget::RobotsTxt, scans.clone());
+    let body = setup_extractor(ExtractionTarget::ResponseBody, scans);
+
+    let r_resp = robots.request_link(&served).await;
+    let b_resp = body.request_link(&served).await;
+
+    assert!(r_resp.is_err());
+    assert!(b_resp.is_err());
+    assert_eq!(mock.hits(), 0); // function exits before requests can happen
+    Ok(())
+}
--- a/src/filters/container.rs
+++ b/src/filters/container.rs
@@ -0,0 +1,130 @@
+use std::sync::RwLock;
+
+use anyhow::Result;
+use serde::{ser::SerializeSeq, Serialize, Serializer};
+
+use crate::{
+    event_handlers::Command::AddToUsizeField, response::FeroxResponse,
+    statistics::StatField::WildcardsFiltered, CommandSender,
+};
+
+use super::{
+    FeroxFilter, LinesFilter, RegexFilter, SimilarityFilter, SizeFilter, StatusCodeFilter,
+    WildcardFilter, WordsFilter,
+};
+
+/// Container around a collection of `FeroxFilters`s
+#[derive(Debug, Default)]
+pub struct FeroxFilters {
+    /// collection of `FeroxFilters`
+    pub filters: RwLock<Vec<Box<dyn FeroxFilter>>>,
+}
+
+/// implementation of FeroxFilter collection
+impl FeroxFilters {
+    /// add a single FeroxFilter to the collection
+    pub fn push(&self, filter: Box<dyn FeroxFilter>) -> Result<()> {
+        if let Ok(mut guard) = self.filters.write() {
+            if guard.contains(&filter) {
+                return Ok(());
+            }
+
+            guard.push(filter)
+        }
+        Ok(())
+    }
+
+    /// remove items from the underlying collection by their index
+    ///
+    /// note: indexes passed in should be index-to-remove+1. This is built for the scan mgt menu
+    ///       so indexes aren't 0-based whehn the user enters them.
+    ///       
+    pub fn remove(&self, indices: &mut [usize]) {
+        // since we're removing by index, indices must be sorted and then reversed.
+        // this allows us to iterate over the collection from the rear, allowing any shifting
+        // of the vector to happen on sections that we no longer care about, as we're moving
+        // in the opposite direction
+        indices.sort_unstable();
+        indices.reverse();
+
+        if let Ok(mut guard) = self.filters.write() {
+            for index in indices {
+                // numbering of the menu starts at 1, so we'll need to reduce the index by 1
+                // to account for that. if they've provided 0 as an offset, we'll set the
+                // result to a gigantic number and skip it in the loop with a bounds check
+                let reduced_idx = index.checked_sub(1).unwrap_or(usize::MAX);
+
+                // check if number provided is out of range
+                if reduced_idx >= guard.len() {
+                    // usize can't be negative, just need to handle exceeding bounds
+                    continue;
+                }
+
+                guard.remove(reduced_idx);
+            }
+        }
+    }
+
+    /// Simple helper to stay DRY; determines whether or not a given `FeroxResponse` should be reported
+    /// to the user or not.
+    pub fn should_filter_response(
+        &self,
+        response: &FeroxResponse,
+        tx_stats: CommandSender,
+    ) -> bool {
+        if let Ok(filters) = self.filters.read() {
+            for filter in filters.iter() {
+                // wildcard.should_filter goes here
+                if filter.should_filter_response(response) {
+                    if filter.as_any().downcast_ref::<WildcardFilter>().is_some() {
+                        tx_stats
+                            .send(AddToUsizeField(WildcardsFiltered, 1))
+                            .unwrap_or_default();
+                    }
+                    return true;
+                }
+            }
+        }
+        false
+    }
+}
+
+impl Serialize for FeroxFilters {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        if let Ok(guard) = self.filters.read() {
+            let mut seq = serializer.serialize_seq(Some(guard.len()))?;
+
+            for filter in &*guard {
+                if let Some(line_filter) = filter.as_any().downcast_ref::<LinesFilter>() {
+                    seq.serialize_element(line_filter).unwrap_or_default();
+                } else if let Some(word_filter) = filter.as_any().downcast_ref::<WordsFilter>() {
+                    seq.serialize_element(word_filter).unwrap_or_default();
+                } else if let Some(size_filter) = filter.as_any().downcast_ref::<SizeFilter>() {
+                    seq.serialize_element(size_filter).unwrap_or_default();
+                } else if let Some(status_filter) =
+                    filter.as_any().downcast_ref::<StatusCodeFilter>()
+                {
+                    seq.serialize_element(status_filter).unwrap_or_default();
+                } else if let Some(regex_filter) = filter.as_any().downcast_ref::<RegexFilter>() {
+                    seq.serialize_element(regex_filter).unwrap_or_default();
+                } else if let Some(similarity_filter) =
+                    filter.as_any().downcast_ref::<SimilarityFilter>()
+                {
+                    seq.serialize_element(similarity_filter).unwrap_or_default();
+                } else if let Some(wildcard_filter) =
+                    filter.as_any().downcast_ref::<WildcardFilter>()
+                {
+                    seq.serialize_element(wildcard_filter).unwrap_or_default();
+                }
+            }
+            seq.end()
+        } else {
+            // if for some reason we can't unlock the mutex, just write an empty list
+            let seq = serializer.serialize_seq(Some(0))?;
+            seq.end()
+        }
+    }
+}
--- a/src/filters/empty.rs
+++ b/src/filters/empty.rs
@@ -0,0 +1,22 @@
+use super::*;
+
+/// Dummy filter for internal shenanigans
+#[derive(Default, Debug, PartialEq, Eq)]
+pub struct EmptyFilter {}
+
+impl FeroxFilter for EmptyFilter {
+    /// `EmptyFilter` always returns false
+    fn should_filter_response(&self, _response: &FeroxResponse) -> bool {
+        false
+    }
+
+    /// Compare one EmptyFilter to another
+    fn box_eq(&self, other: &dyn Any) -> bool {
+        other.downcast_ref::<Self>().map_or(false, |a| self == a)
+    }
+
+    /// Return self as Any for dynamic dispatch purposes
+    fn as_any(&self) -> &dyn Any {
+        self
+    }
+}
--- a/src/filters/init.rs
+++ b/src/filters/init.rs
@@ -0,0 +1,71 @@
+use super::{
+    utils::create_similarity_filter, LinesFilter, RegexFilter, SizeFilter, StatusCodeFilter,
+    WordsFilter,
+};
+use crate::{event_handlers::Handles, skip_fail, utils::fmt_err, Command::AddFilter};
+use anyhow::Result;
+use regex::Regex;
+use std::sync::Arc;
+
+/// add all user-supplied filters to the (already started) filters handler
+pub async fn initialize(handles: Arc<Handles>) -> Result<()> {
+    // add any status code filters to filters handler's FeroxFilters  (-C|--filter-status)
+    for code_filter in &handles.config.filter_status {
+        let filter = StatusCodeFilter {
+            filter_code: *code_filter,
+        };
+        let boxed_filter = Box::new(filter);
+        skip_fail!(handles.filters.send(AddFilter(boxed_filter)));
+    }
+
+    // add any line count filters to filters handler's FeroxFilters  (-N|--filter-lines)
+    for lines_filter in &handles.config.filter_line_count {
+        let filter = LinesFilter {
+            line_count: *lines_filter,
+        };
+        let boxed_filter = Box::new(filter);
+        skip_fail!(handles.filters.send(AddFilter(boxed_filter)));
+    }
+
+    // add any line count filters to filters handler's FeroxFilters  (-W|--filter-words)
+    for words_filter in &handles.config.filter_word_count {
+        let filter = WordsFilter {
+            word_count: *words_filter,
+        };
+        let boxed_filter = Box::new(filter);
+        skip_fail!(handles.filters.send(AddFilter(boxed_filter)));
+    }
+
+    // add any line count filters to filters handler's FeroxFilters  (-S|--filter-size)
+    for size_filter in &handles.config.filter_size {
+        let filter = SizeFilter {
+            content_length: *size_filter,
+        };
+        let boxed_filter = Box::new(filter);
+        skip_fail!(handles.filters.send(AddFilter(boxed_filter)));
+    }
+
+    // add any regex filters to filters handler's FeroxFilters  (-X|--filter-regex)
+    for regex_filter in &handles.config.filter_regex {
+        let raw = regex_filter;
+        let compiled = skip_fail!(Regex::new(raw));
+
+        let filter = RegexFilter {
+            raw_string: raw.to_owned(),
+            compiled,
+        };
+        let boxed_filter = Box::new(filter);
+        skip_fail!(handles.filters.send(AddFilter(boxed_filter)));
+    }
+
+    // add any similarity filters to filters handler's FeroxFilters  (--filter-similar-to)
+    for similarity_filter in &handles.config.filter_similar {
+        let filter = skip_fail!(create_similarity_filter(similarity_filter, handles.clone()).await);
+
+        let boxed_filter = Box::new(filter);
+        skip_fail!(handles.filters.send(AddFilter(boxed_filter)));
+    }
+
+    handles.filters.sync().await?;
+    Ok(())
+}
--- a/src/filters/lines.rs
+++ b/src/filters/lines.rs
@@ -2,7 +2,7 @@ use super::*;

 /// Simple implementor of FeroxFilter; used to filter out responses based on the number of lines
 /// in a Response body; specified using -N|--filter-lines
-#[derive(Default, Debug, PartialEq)]
+#[derive(Default, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct LinesFilter {
    /// Number of lines in a Response's body that should be filtered
    pub line_count: usize,
--- a/src/filters/mod.rs
+++ b/src/filters/mod.rs
@@ -1,5 +1,23 @@
-//! module containing all of feroxbuster's filters
-mod traits;
+//! contains all of feroxbuster's filters
+use serde::{Deserialize, Serialize};
+use std::any::Any;
+use std::fmt::Debug;
+
+use crate::response::FeroxResponse;
+use crate::traits::{FeroxFilter, FeroxSerialize};
+
+pub use self::container::FeroxFilters;
+pub(crate) use self::empty::EmptyFilter;
+pub use self::init::initialize;
+pub use self::lines::LinesFilter;
+pub use self::regex::RegexFilter;
+pub use self::similarity::SimilarityFilter;
+pub use self::size::SizeFilter;
+pub use self::status_code::StatusCodeFilter;
+pub(crate) use self::utils::{create_similarity_filter, filter_lookup};
+pub use self::wildcard::WildcardFilter;
+pub use self::words::WordsFilter;
+
 mod wildcard;
 mod status_code;
 mod words;
@@ -7,18 +25,9 @@ mod lines;
 mod size;
 mod regex;
 mod similarity;
+mod container;
 #[cfg(test)]
 mod tests;
-
-pub use self::lines::LinesFilter;
-pub use self::regex::RegexFilter;
-pub use self::similarity::SimilarityFilter;
-pub use self::size::SizeFilter;
-pub use self::status_code::StatusCodeFilter;
-pub use self::traits::FeroxFilter;
-pub use self::wildcard::WildcardFilter;
-pub use self::words::WordsFilter;
-
-use crate::{config::CONFIGURATION, utils::get_url_path_length, FeroxResponse, FeroxSerialize};
-use std::any::Any;
-use std::fmt::Debug;
+mod init;
+mod utils;
+mod empty;
--- a/src/filters/regex.rs
+++ b/src/filters/regex.rs
@@ -3,15 +3,25 @@ use ::regex::Regex;

 /// Simple implementor of FeroxFilter; used to filter out responses based on a given regular
 /// expression; specified using -X|--filter-regex
-#[derive(Debug)]
+#[derive(Debug, Serialize, Deserialize)]
 pub struct RegexFilter {
    /// Regular expression to be applied to the response body for filtering, compiled
+    #[serde(with = "serde_regex")]
    pub compiled: Regex,

    /// Regular expression as passed in on the command line, not compiled
    pub raw_string: String,
 }

+impl Default for RegexFilter {
+    fn default() -> Self {
+        Self {
+            compiled: Regex::new("").unwrap(),
+            raw_string: String::new(),
+        }
+    }
+}
+
 /// implementation of FeroxFilter for RegexFilter
 impl FeroxFilter for RegexFilter {
    /// Check `expression` against the response body, if the expression matches, the response
--- a/src/filters/similarity.rs
+++ b/src/filters/similarity.rs
@@ -3,13 +3,16 @@ use fuzzyhash::FuzzyHash;

 /// Simple implementor of FeroxFilter; used to filter out responses based on the similarity of a
 /// Response body with a known response; specified using --filter-similar-to
-#[derive(Default, Debug, PartialEq)]
+#[derive(Default, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SimilarityFilter {
-    /// Response's body to be used for comparison for similarity
-    pub text: String,
+    /// Hash of Response's body to be used during similarity comparison
+    pub hash: String,

    /// Percentage of similarity at which a page is determined to be a near-duplicate of another
    pub threshold: u32,
+
+    /// Url originally requested for the similarity filter
+    pub original_url: String,
 }

 /// implementation of FeroxFilter for SimilarityFilter
@@ -17,9 +20,9 @@ impl FeroxFilter for SimilarityFilter {
    /// Check `FeroxResponse::text` against what was requested from the site passed in via
    /// --filter-similar-to
    fn should_filter_response(&self, response: &FeroxResponse) -> bool {
-        let other = FuzzyHash::new(&response.text);
+        let other = FuzzyHash::new(response.text());

-        if let Ok(result) = FuzzyHash::compare(&self.text, &other.to_string()) {
+        if let Ok(result) = FuzzyHash::compare(&self.hash, other.to_string()) {
            return result >= self.threshold;
        }

--- a/src/filters/size.rs
+++ b/src/filters/size.rs
@@ -2,7 +2,7 @@ use super::*;

 /// Simple implementor of FeroxFilter; used to filter out responses based on the length of a
 /// Response body; specified using -S|--filter-size
-#[derive(Default, Debug, PartialEq)]
+#[derive(Default, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SizeFilter {
    /// Overall length of a Response's body that should be filtered
    pub content_length: u64,
--- a/src/filters/status_code.rs
+++ b/src/filters/status_code.rs
@@ -2,7 +2,7 @@ use super::*;

 /// Simple implementor of FeroxFilter; used to filter out status codes specified using
 /// -C|--filter-status
-#[derive(Default, Debug, PartialEq)]
+#[derive(Default, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct StatusCodeFilter {
    /// Status code that should not be displayed to the user
    pub filter_code: u16,
--- a/src/filters/tests.rs
+++ b/src/filters/tests.rs
@@ -1,12 +1,36 @@
 use super::*;
 use ::fuzzyhash::FuzzyHash;
 use ::regex::Regex;
-use reqwest::Url;
+
+#[test]
+/// simply test the default values for wildcardfilter, expect 0, 0
+fn wildcard_filter_default() {
+    let wcf = WildcardFilter::default();
+    assert_eq!(wcf.size, u64::MAX);
+    assert_eq!(wcf.dynamic, u64::MAX);
+}
+
+#[test]
+/// just a simple test to increase code coverage by hitting as_any and the inner value
+fn wildcard_filter_as_any() {
+    let filter = WildcardFilter::default();
+    let filter2 = WildcardFilter::default();
+
+    assert!(filter.box_eq(filter2.as_any()));
+
+    assert_eq!(
+        *filter.as_any().downcast_ref::<WildcardFilter>().unwrap(),
+        filter
+    );
+}

 #[test]
 /// just a simple test to increase code coverage by hitting as_any and the inner value
 fn lines_filter_as_any() {
    let filter = LinesFilter { line_count: 1 };
+    let filter2 = LinesFilter { line_count: 1 };
+
+    assert!(filter.box_eq(filter2.as_any()));

    assert_eq!(filter.line_count, 1);
    assert_eq!(
@@ -19,6 +43,9 @@ fn lines_filter_as_any() {
 /// just a simple test to increase code coverage by hitting as_any and the inner value
 fn words_filter_as_any() {
    let filter = WordsFilter { word_count: 1 };
+    let filter2 = WordsFilter { word_count: 1 };
+
+    assert!(filter.box_eq(filter2.as_any()));

    assert_eq!(filter.word_count, 1);
    assert_eq!(
@@ -31,6 +58,9 @@ fn words_filter_as_any() {
 /// just a simple test to increase code coverage by hitting as_any and the inner value
 fn size_filter_as_any() {
    let filter = SizeFilter { content_length: 1 };
+    let filter2 = SizeFilter { content_length: 1 };
+
+    assert!(filter.box_eq(filter2.as_any()));

    assert_eq!(filter.content_length, 1);
    assert_eq!(
@@ -43,6 +73,9 @@ fn size_filter_as_any() {
 /// just a simple test to increase code coverage by hitting as_any and the inner value
 fn status_code_filter_as_any() {
    let filter = StatusCodeFilter { filter_code: 200 };
+    let filter2 = StatusCodeFilter { filter_code: 200 };
+
+    assert!(filter.box_eq(filter2.as_any()));

    assert_eq!(filter.filter_code, 200);
    assert_eq!(
@@ -56,10 +89,17 @@ fn status_code_filter_as_any() {
 fn regex_filter_as_any() {
    let raw = r".*\.txt$";
    let compiled = Regex::new(raw).unwrap();
+    let compiled2 = Regex::new(raw).unwrap();
    let filter = RegexFilter {
        compiled,
        raw_string: raw.to_string(),
    };
+    let filter2 = RegexFilter {
+        compiled: compiled2,
+        raw_string: raw.to_string(),
+    };
+
+    assert!(filter.box_eq(filter2.as_any()));

    assert_eq!(filter.raw_string, r".*\.txt$");
    assert_eq!(
@@ -71,60 +111,62 @@ fn regex_filter_as_any() {
 #[test]
 /// test should_filter on WilcardFilter where static logic matches
 fn wildcard_should_filter_when_static_wildcard_found() {
-    let resp = FeroxResponse {
-        text: String::new(),
-        wildcard: true,
-        url: Url::parse("http://localhost").unwrap(),
-        content_length: 100,
-        word_count: 50,
-        line_count: 25,
-        headers: reqwest::header::HeaderMap::new(),
-        status: reqwest::StatusCode::OK,
-    };
+    let mut resp = FeroxResponse::default();
+    resp.set_wildcard(true);
+    resp.set_url("http://localhost");
+    resp.set_text(
+        "pellentesque diam volutpat commodo sed egestas egestas fringilla phasellus faucibus",
+    );

    let filter = WildcardFilter {
-        size: 100,
+        size: 83,
        dynamic: 0,
+        dont_filter: false,
+        method: "GET".to_owned(),
    };

    assert!(filter.should_filter_response(&resp));
 }

+#[test]
+/// test should_filter on WilcardFilter where static logic matches but response length is 0
+fn wildcard_should_filter_when_static_wildcard_len_is_zero() {
+    let mut resp = FeroxResponse::default();
+    resp.set_wildcard(true);
+    resp.set_url("http://localhost");
+
+    // default WildcardFilter is used in the code that executes when response.content_length() == 0
+    let filter = WildcardFilter::new(false);
+
+    assert!(filter.should_filter_response(&resp));
+}
+
 #[test]
 /// test should_filter on WilcardFilter where dynamic logic matches
 fn wildcard_should_filter_when_dynamic_wildcard_found() {
-    let resp = FeroxResponse {
-        text: String::new(),
-        wildcard: true,
-        url: Url::parse("http://localhost/stuff").unwrap(),
-        content_length: 100,
-        word_count: 50,
-        line_count: 25,
-        headers: reqwest::header::HeaderMap::new(),
-        status: reqwest::StatusCode::OK,
-    };
+    let mut resp = FeroxResponse::default();
+    resp.set_wildcard(true);
+    resp.set_url("http://localhost/stuff");
+    resp.set_text("pellentesque diam volutpat commodo sed egestas egestas fringilla");

    let filter = WildcardFilter {
        size: 0,
-        dynamic: 95,
+        dynamic: 59, // content-length - 5 (len('stuff'))
+        dont_filter: false,
+        method: "GET".to_owned(),
    };

+    println!("resp: {:?}: filter: {:?}", resp, filter);
+
    assert!(filter.should_filter_response(&resp));
 }

 #[test]
 /// test should_filter on RegexFilter where regex matches body
 fn regexfilter_should_filter_when_regex_matches_on_response_body() {
-    let resp = FeroxResponse {
-        text: String::from("im a body response hurr durr!"),
-        wildcard: false,
-        url: Url::parse("http://localhost/stuff").unwrap(),
-        content_length: 100,
-        word_count: 50,
-        line_count: 25,
-        headers: reqwest::header::HeaderMap::new(),
-        status: reqwest::StatusCode::OK,
-    };
+    let mut resp = FeroxResponse::default();
+    resp.set_url("http://localhost/stuff");
+    resp.set_text("im a body response hurr durr!");

    let raw = r"response...rr";

@@ -139,34 +181,28 @@ fn regexfilter_should_filter_when_regex_matches_on_response_body() {
 #[test]
 /// a few simple tests for similarity filter
 fn similarity_filter_is_accurate() {
-    let mut resp = FeroxResponse {
-        text: String::from("sitting"),
-        wildcard: false,
-        url: Url::parse("http://localhost/stuff").unwrap(),
-        content_length: 100,
-        word_count: 50,
-        line_count: 25,
-        headers: reqwest::header::HeaderMap::new(),
-        status: reqwest::StatusCode::OK,
-    };
+    let mut resp = FeroxResponse::default();
+    resp.set_url("http://localhost/stuff");
+    resp.set_text("sitting");

    let mut filter = SimilarityFilter {
-        text: FuzzyHash::new("kitten").to_string(),
+        hash: FuzzyHash::new("kitten").to_string(),
        threshold: 95,
+        original_url: "".to_string(),
    };

    // kitten/sitting is 57% similar, so a threshold of 95 should not be filtered
    assert!(!filter.should_filter_response(&resp));

-    resp.text = String::new();
-    filter.text = String::new();
+    resp.set_text("");
+    filter.hash = String::new();
    filter.threshold = 100;

    // two empty strings are the same, however ssdeep doesn't accept empty strings, expect false
    assert!(!filter.should_filter_response(&resp));

-    resp.text = String::from("some data to hash for the purposes of running a test");
-    filter.text = FuzzyHash::new("some data to hash for the purposes of running a te").to_string();
+    resp.set_text("some data to hash for the purposes of running a test");
+    filter.hash = FuzzyHash::new("some data to hash for the purposes of running a te").to_string();
    filter.threshold = 17;

    assert!(filter.should_filter_response(&resp));
@@ -176,13 +212,58 @@ fn similarity_filter_is_accurate() {
 /// just a simple test to increase code coverage by hitting as_any and the inner value
 fn similarity_filter_as_any() {
    let filter = SimilarityFilter {
-        text: String::from("stuff"),
+        hash: String::from("stuff"),
        threshold: 95,
+        original_url: "".to_string(),
    };

-    assert_eq!(filter.text, "stuff");
+    let filter2 = SimilarityFilter {
+        hash: String::from("stuff"),
+        threshold: 95,
+        original_url: "".to_string(),
+    };
+
+    assert!(filter.box_eq(filter2.as_any()));
+
+    assert_eq!(filter.hash, "stuff");
    assert_eq!(
        *filter.as_any().downcast_ref::<SimilarityFilter>().unwrap(),
        filter
    );
 }
+
+#[test]
+/// test correctness of FeroxFilters::remove
+fn remove_function_works_as_expected() {
+    let data = FeroxFilters::default();
+    assert!(data.filters.read().unwrap().is_empty());
+
+    (0..8).for_each(|i| {
+        data.push(Box::new(WordsFilter { word_count: i })).unwrap();
+    });
+
+    // remove removes index-1 from the vec, zero is skipped, and out-of-bounds indices are skipped
+    data.remove(&mut [0]);
+    assert_eq!(data.filters.read().unwrap().len(), 8);
+
+    data.remove(&mut [10000]);
+    assert_eq!(data.filters.read().unwrap().len(), 8);
+
+    // removing 0, 2, 4
+    data.remove(&mut [1, 3, 5]);
+
+    assert_eq!(data.filters.read().unwrap().len(), 5);
+
+    let expected = vec![
+        WordsFilter { word_count: 1 },
+        WordsFilter { word_count: 3 },
+        WordsFilter { word_count: 5 },
+        WordsFilter { word_count: 6 },
+        WordsFilter { word_count: 7 },
+    ];
+
+    for filter in data.filters.read().unwrap().iter() {
+        let downcast = filter.as_any().downcast_ref::<WordsFilter>().unwrap();
+        assert!(expected.contains(downcast));
+    }
+}
--- a/src/filters/traits.rs
+++ b/src/filters/traits.rs
@@ -1,27 +0,0 @@
-use super::*;
-
-// references:
-//   https://dev.to/magnusstrale/rust-trait-objects-in-a-vector-non-trivial-4co5
-//   https://stackoverflow.com/questions/25339603/how-to-test-for-equality-between-trait-objects
-
-/// FeroxFilter trait; represents different types of possible filters that can be applied to
-/// responses
-pub trait FeroxFilter: Debug + Send + Sync {
-    /// Determine whether or not this particular filter should be applied or not
-    fn should_filter_response(&self, response: &FeroxResponse) -> bool;
-
-    /// delegates to the FeroxFilter-implementing type which gives us the actual type of self
-    fn box_eq(&self, other: &dyn Any) -> bool;
-
-    /// gives us `other` as Any in box_eq
-    fn as_any(&self) -> &dyn Any;
-}
-
-/// implementation of PartialEq, necessary long-form due to "trait cannot be made into an object"
-/// error when attempting to derive PartialEq on the trait itself
-impl PartialEq for Box<dyn FeroxFilter> {
-    /// Perform a comparison of two implementors of the FeroxFilter trait
-    fn eq(&self, other: &Box<dyn FeroxFilter>) -> bool {
-        self.box_eq(other.as_any())
-    }
-}
--- a/src/filters/utils.rs
+++ b/src/filters/utils.rs
@@ -0,0 +1,204 @@
+use super::FeroxFilter;
+use super::SimilarityFilter;
+use crate::event_handlers::Handles;
+use crate::response::FeroxResponse;
+use crate::utils::logged_request;
+use crate::{DEFAULT_METHOD, SIMILARITY_THRESHOLD};
+use anyhow::Result;
+use fuzzyhash::FuzzyHash;
+use regex::Regex;
+use reqwest::Url;
+use std::sync::Arc;
+
+/// wrapper around logic necessary to create a SimilarityFilter
+///
+/// - parses given url
+/// - makes request to the parsed url
+/// - gathers extensions from the url, if configured to do so
+/// - computes hash of response body
+/// - creates filter with hash
+pub(crate) async fn create_similarity_filter(
+    similarity_filter: &str,
+    handles: Arc<Handles>,
+) -> Result<SimilarityFilter> {
+    // url as-is based on input, ignores user-specified url manipulation options (add-slash etc)
+    let url = Url::parse(similarity_filter)?;
+
+    // attempt to request the given url
+    let resp = logged_request(&url, DEFAULT_METHOD, None, handles.clone()).await?;
+
+    // if successful, create a filter based on the response's body
+    let mut fr = FeroxResponse::from(
+        resp,
+        similarity_filter,
+        DEFAULT_METHOD,
+        handles.config.output_level,
+    )
+    .await;
+
+    if handles.config.collect_extensions {
+        fr.parse_extension(handles.clone())?;
+    }
+
+    // hash the response body and store the resulting hash in the filter object
+    let hash = FuzzyHash::new(fr.text()).to_string();
+
+    Ok(SimilarityFilter {
+        hash,
+        threshold: SIMILARITY_THRESHOLD,
+        original_url: similarity_filter.to_string(),
+    })
+}
+
+/// used in conjunction with the Scan Management Menu
+///
+/// when a user uses the n[ew-filter] command in the menu, the two params are passed here for
+/// processing.
+///
+/// an example command may be `new-filter lines 40`. `lines` and `40` are passed here as &str's
+///
+/// once here, the type and value are used to create an appropriate FeroxFilter. If anything
+/// goes wrong during creation, None is returned.
+pub(crate) fn filter_lookup(filter_type: &str, filter_value: &str) -> Option<Box<dyn FeroxFilter>> {
+    match filter_type {
+        "status" => {
+            if let Ok(parsed) = filter_value.parse() {
+                return Some(Box::new(super::StatusCodeFilter {
+                    filter_code: parsed,
+                }));
+            }
+        }
+        "lines" => {
+            if let Ok(parsed) = filter_value.parse() {
+                return Some(Box::new(super::LinesFilter { line_count: parsed }));
+            }
+        }
+        "size" => {
+            if let Ok(parsed) = filter_value.parse() {
+                return Some(Box::new(super::SizeFilter {
+                    content_length: parsed,
+                }));
+            }
+        }
+        "words" => {
+            if let Ok(parsed) = filter_value.parse() {
+                return Some(Box::new(super::WordsFilter { word_count: parsed }));
+            }
+        }
+        "regex" => {
+            if let Ok(parsed) = Regex::new(filter_value) {
+                return Some(Box::new(super::RegexFilter {
+                    compiled: parsed,
+                    raw_string: filter_value.to_string(),
+                }));
+            }
+        }
+        "similarity" => {
+            return Some(Box::new(SimilarityFilter {
+                hash: String::new(),
+                threshold: SIMILARITY_THRESHOLD,
+                original_url: filter_value.to_string(),
+            }));
+        }
+        _ => (),
+    }
+
+    None
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::config::Configuration;
+    use crate::filters::{LinesFilter, RegexFilter, SizeFilter, StatusCodeFilter, WordsFilter};
+    use crate::scan_manager::FeroxScans;
+    use httpmock::Method::GET;
+    use httpmock::MockServer;
+
+    #[test]
+    /// filter_lookup returns correct filters
+    fn filter_lookup_returns_correct_filters() {
+        let filter = filter_lookup("status", "200").unwrap();
+        assert_eq!(
+            filter.as_any().downcast_ref::<StatusCodeFilter>().unwrap(),
+            &StatusCodeFilter { filter_code: 200 }
+        );
+
+        let filter = filter_lookup("lines", "10").unwrap();
+        assert_eq!(
+            filter.as_any().downcast_ref::<LinesFilter>().unwrap(),
+            &LinesFilter { line_count: 10 }
+        );
+
+        let filter = filter_lookup("size", "20").unwrap();
+        assert_eq!(
+            filter.as_any().downcast_ref::<SizeFilter>().unwrap(),
+            &SizeFilter { content_length: 20 }
+        );
+
+        let filter = filter_lookup("words", "30").unwrap();
+        assert_eq!(
+            filter.as_any().downcast_ref::<WordsFilter>().unwrap(),
+            &WordsFilter { word_count: 30 }
+        );
+
+        let filter = filter_lookup("regex", "stuff.*").unwrap();
+        let compiled = Regex::new("stuff.*").unwrap();
+        let raw_string = String::from("stuff.*");
+        assert_eq!(
+            filter.as_any().downcast_ref::<RegexFilter>().unwrap(),
+            &RegexFilter {
+                compiled,
+                raw_string
+            }
+        );
+
+        let filter = filter_lookup("similarity", "http://localhost").unwrap();
+        assert_eq!(
+            filter.as_any().downcast_ref::<SimilarityFilter>().unwrap(),
+            &SimilarityFilter {
+                hash: String::new(),
+                threshold: SIMILARITY_THRESHOLD,
+                original_url: "http://localhost".to_string()
+            }
+        );
+
+        assert!(filter_lookup("non-existent", "").is_none());
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+    /// ensure create_similarity_filter correctness of return value and side-effects
+    async fn create_similarity_filter_is_correct() {
+        let srv = MockServer::start();
+
+        let mock = srv.mock(|when, then| {
+            when.method(GET).path("/");
+            then.status(200).body("this is a test");
+        });
+
+        let scans = FeroxScans::default();
+        let config = Configuration {
+            collect_extensions: true,
+            ..Default::default()
+        };
+
+        let (test_handles, _) = Handles::for_testing(Some(Arc::new(scans)), Some(Arc::new(config)));
+
+        let handles = Arc::new(test_handles);
+
+        let filter = create_similarity_filter(&srv.url("/"), handles.clone())
+            .await
+            .unwrap();
+
+        assert_eq!(mock.hits(), 1);
+
+        assert_eq!(
+            filter,
+            SimilarityFilter {
+                hash: "3:YKEpn:Yfp".to_string(),
+                threshold: SIMILARITY_THRESHOLD,
+                original_url: srv.url("/")
+            }
+        );
+    }
+}
--- a/src/filters/wildcard.rs
+++ b/src/filters/wildcard.rs
@@ -1,4 +1,5 @@
 use super::*;
+use crate::{url::FeroxUrl, DEFAULT_METHOD};

 /// Data holder for two pieces of data needed when auto-filtering out wildcard responses
 ///
@@ -8,7 +9,7 @@ use super::*;
 ///
 /// `size` is size of the response that should be included with filters passed via runtime
 /// configuration and any static wildcard lengths.
-#[derive(Debug, Default, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct WildcardFilter {
    /// size of the response that will later be combined with the length of the path of the url
    /// requested
@@ -16,6 +17,36 @@ pub struct WildcardFilter {

    /// size of the response that should be included with filters passed via runtime configuration
    pub size: u64,
+
+    /// method used in request that should be included with filters passed via runtime configuration
+    pub method: String,
+
+    /// whether or not the user passed -D on the command line
+    pub(super) dont_filter: bool,
+}
+
+/// implementation of WildcardFilter
+impl WildcardFilter {
+    /// given a boolean representing whether -D was used or not, create a new WildcardFilter
+    pub fn new(dont_filter: bool) -> Self {
+        Self {
+            dont_filter,
+            ..Default::default()
+        }
+    }
+}
+
+/// implement default that populates both values with u64::MAX
+impl Default for WildcardFilter {
+    /// populate both values with u64::MAX
+    fn default() -> Self {
+        Self {
+            dont_filter: false,
+            size: u64::MAX,
+            method: DEFAULT_METHOD.to_owned(),
+            dynamic: u64::MAX,
+        }
+    }
 }

 /// implementation of FeroxFilter for WildcardFilter
@@ -26,14 +57,17 @@ impl FeroxFilter for WildcardFilter {
        log::trace!("enter: should_filter_response({:?} {})", self, response);

        // quick return if dont_filter is set
-        if CONFIGURATION.dont_filter {
+        if self.dont_filter {
            // --dont-filter applies specifically to wildcard filters, it is not a 100% catch all
            // for not filtering anything.  As such, it should live in the implementation of
            // a wildcard filter
            return false;
        }

-        if self.size > 0 && self.size == response.content_length() {
+        if self.size != u64::MAX
+            && self.size == response.content_length()
+            && self.method == response.method().as_str()
+        {
            // static wildcard size found during testing
            // size isn't default, size equals response length, and auto-filter is on
            log::debug!("static wildcard: filtered out {}", response.url());
@@ -41,7 +75,18 @@ impl FeroxFilter for WildcardFilter {
            return true;
        }

-        if self.dynamic > 0 {
+        if self.size == u64::MAX
+            && response.content_length() == 0
+            && self.method == response.method().as_str()
+        {
+            // static wildcard size found during testing
+            // but response length was zero; pointed out by @Tib3rius
+            log::debug!("static wildcard: filtered out {}", response.url());
+            log::trace!("exit: should_filter_response -> true");
+            return true;
+        }
+
+        if self.dynamic != u64::MAX {
            // dynamic wildcard offset found during testing

            // I'm about to manually split this url path instead of using reqwest::Url's
@@ -49,7 +94,7 @@ impl FeroxFilter for WildcardFilter {
            // except that I don't want an empty string taking up the last index in the
            // event that the url ends with a forward slash.  It's ugly enough to be split
            // into its own function for readability.
-            let url_len = get_url_path_length(&response.url());
+            let url_len = FeroxUrl::path_length_of_url(response.url());

            if url_len + self.dynamic == response.content_length() {
                log::debug!("dynamic wildcard: filtered out {}", response.url());
--- a/src/filters/words.rs
+++ b/src/filters/words.rs
@@ -2,7 +2,7 @@ use super::*;

 /// Simple implementor of FeroxFilter; used to filter out responses based on the number of words
 /// in a Response body; specified using -W|--filter-words
-#[derive(Default, Debug, PartialEq)]
+#[derive(Default, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct WordsFilter {
    /// Number of words in a Response's body that should be filtered
    pub word_count: usize,
--- a/src/heuristics.rs
+++ b/src/heuristics.rs
@@ -1,274 +1,424 @@
-use crate::{
-    config::{CONFIGURATION, PROGRESS_PRINTER},
-    filters::WildcardFilter,
-    scanner::should_filter_response,
-    statistics::StatCommand,
-    utils::{ferox_print, format_url, get_url_path_length, make_request, status_colorizer},
-    FeroxResponse,
-};
+use std::sync::Arc;
+
+use anyhow::{bail, Result};
 use console::style;
-use indicatif::ProgressBar;
-use tokio::sync::mpsc::UnboundedSender;
+use scraper::{Html, Selector};
 use uuid::Uuid;

+use crate::message::FeroxMessage;
+use crate::{
+    config::OutputLevel,
+    event_handlers::{Command, Handles},
+    filters::WildcardFilter,
+    progress::PROGRESS_PRINTER,
+    response::FeroxResponse,
+    skip_fail,
+    url::FeroxUrl,
+    utils::{ferox_print, fmt_err, logged_request, status_colorizer},
+    DEFAULT_METHOD,
+};
+
 /// length of a standard UUID, used when determining wildcard responses
 const UUID_LENGTH: u64 = 32;

-/// Simple helper to return a uuid, formatted as lowercase without hyphens
-///
-/// `length` determines the number of uuids to string together. Each uuid
-/// is 32 characters long. So, a length of 1 return a 32 character string,
-/// a length of 2 returns a 64 character string, and so on...
-fn unique_string(length: usize) -> String {
-    log::trace!("enter: unique_string({})", length);
-    let mut ids = vec![];
-
-    for _ in 0..length {
-        ids.push(Uuid::new_v4().to_simple().to_string());
-    }
-
-    let unique_id = ids.join("");
-
-    log::trace!("exit: unique_string -> {}", unique_id);
-    unique_id
+/// wrapper around ugly string formatting
+macro_rules! format_template {
+    ($template:expr, $method:expr, $length:expr) => {
+        format!(
+            $template,
+            status_colorizer("WLD"),
+            $method,
+            "-",
+            "-",
+            "-",
+            style("auto-filtering").yellow(),
+            style($length).cyan(),
+            style("--dont-filter").yellow()
+        )
+    };
 }

-/// Tests the given url to see if it issues a wildcard response
-///
-/// In the event that url returns a wildcard response, a
-/// [WildcardFilter](struct.WildcardFilter.html) is created and returned to the caller.
-pub async fn wildcard_test(
-    target_url: &str,
-    bar: ProgressBar,
-    tx_term: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> Option<WildcardFilter> {
-    log::trace!(
-        "enter: wildcard_test({:?}, {:?}, {:?}, {:?})",
-        target_url,
-        bar,
-        tx_term,
-        tx_stats
-    );
+/// enum representing the different servers that `parse_html` can detect when directory listing is
+/// enabled
+#[derive(Copy, Debug, Clone)]
+pub enum DirListingType {
+    /// apache server, detected by `Index of /`
+    Apache,

-    if CONFIGURATION.dont_filter {
-        // early return, dont_filter scans don't need tested
-        log::trace!("exit: wildcard_test -> None");
-        return None;
+    /// tomcat/python server, detected by `Directory Listing for /`
+    TomCatOrPython,
+
+    /// ASP.NET server, detected by `Directory Listing -- /`
+    AspDotNet,
+
+    // /// IIS/Azure server, detected by `HOST_NAME - /` (not currently used)
+    // IIS_AZURE,
+    /// variant that represents the absence of directory listing
+    None,
+}
+
+/// Wrapper around the results of running a directory listing detection against a target web page
+#[derive(Debug, Clone)]
+pub struct DirListingResult {
+    /// type of server where directory listing was detected
+    /// i.e. https://portswigger.net/kb/issues/00600100_directory-listing
+    pub dir_list_type: Option<DirListingType>,
+
+    /// the `FeroxResponse` generated during detection
+    pub response: FeroxResponse,
+}
+
+/// container for heuristics related info
+pub struct HeuristicTests {
+    /// Handles object for event handler interaction
+    handles: Arc<Handles>,
+}
+
+/// HeuristicTests implementation
+impl HeuristicTests {
+    /// create a new HeuristicTests struct
+    pub fn new(handles: Arc<Handles>) -> Self {
+        Self { handles }
    }

-    let tx_term_mwcr1 = tx_term.clone();
-    let tx_term_mwcr2 = tx_term.clone();
-    let tx_stats_mwcr1 = tx_stats.clone();
-    let tx_stats_mwcr2 = tx_stats.clone();
+    /// Simple helper to return a uuid, formatted as lowercase without hyphens
+    ///
+    /// `length` determines the number of uuids to string together. Each uuid
+    /// is 32 characters long. So, a length of 1 return a 32 character string,
+    /// a length of 2 returns a 64 character string, and so on...
+    fn unique_string(&self, length: usize) -> String {
+        log::trace!("enter: unique_string({})", length);
+        let mut ids = vec![];

-    if let Some(ferox_response) =
-        make_wildcard_request(&target_url, 1, tx_term_mwcr1, tx_stats_mwcr1).await
-    {
-        bar.inc(1);
-
-        // found a wildcard response
-        let mut wildcard = WildcardFilter::default();
-
-        let wc_length = ferox_response.content_length();
-
-        if wc_length == 0 {
-            log::trace!("exit: wildcard_test -> Some({:?})", wildcard);
-            return Some(wildcard);
+        for _ in 0..length {
+            ids.push(Uuid::new_v4().as_simple().to_string());
        }

-        // content length of wildcard is non-zero, perform additional tests:
-        //   make a second request, with a known-sized (64) longer request
-        if let Some(resp_two) =
-            make_wildcard_request(&target_url, 3, tx_term_mwcr2, tx_stats_mwcr2).await
-        {
-            bar.inc(1);
+        let unique_id = ids.join("");
+
+        log::trace!("exit: unique_string -> {}", unique_id);
+        unique_id
+    }
+
+    /// wrapper for sending a filter to the filters event handler
+    fn send_filter(&self, filter: WildcardFilter) -> Result<()> {
+        self.handles
+            .filters
+            .send(Command::AddFilter(Box::new(filter)))
+    }
+
+    /// Tests the given url to see if it issues a wildcard response
+    ///
+    /// In the event that url returns a wildcard response, a
+    /// [WildcardFilter](struct.WildcardFilter.html) is created and sent to the filters event
+    /// handler.
+    ///
+    /// Returns the number of times to increment the caller's progress bar
+    pub async fn wildcard(&self, target_url: &str) -> Result<u64> {
+        log::trace!("enter: wildcard_test({:?})", target_url);
+
+        if self.handles.config.dont_filter {
+            // early return, dont_filter scans don't need tested
+            log::trace!("exit: wildcard_test -> 0");
+            return Ok(0);
+        }
+
+        let data = match self.handles.config.data.is_empty() {
+            true => None,
+            false => Some(self.handles.config.data.as_slice()),
+        };
+
+        let ferox_url = FeroxUrl::from_string(target_url, self.handles.clone());
+
+        for method in self.handles.config.methods.iter() {
+            let ferox_response = self
+                .make_wildcard_request(&ferox_url, method.as_str(), data, 1)
+                .await?;
+
+            // found a wildcard response
+            let mut wildcard = WildcardFilter::new(self.handles.config.dont_filter);
+
+            let wc_length = ferox_response.content_length();
+
+            if wc_length == 0 {
+                log::trace!("exit: wildcard_test -> 1");
+                self.send_filter(wildcard)?;
+                return Ok(1);
+            }
+
+            // content length of wildcard is non-zero, perform additional tests:
+            //   make a second request, with a known-sized (64) longer request
+            let resp_two = self
+                .make_wildcard_request(&ferox_url, method.as_str(), data, 3)
+                .await?;

            let wc2_length = resp_two.content_length();

+            wildcard.method = resp_two.method().as_str().to_owned();
+
            if wc2_length == wc_length + (UUID_LENGTH * 2) {
                // second length is what we'd expect to see if the requested url is
                // reflected in the response along with some static content; aka custom 404
-                let url_len = get_url_path_length(&ferox_response.url());
+                let url_len = ferox_url.path_length()?;

                wildcard.dynamic = wc_length - url_len;

-                if !CONFIGURATION.quiet {
-                    let msg = format!(
-                            "{} {:>9} {:>9} {:>9} Wildcard response is dynamic; {} ({} + url length) responses; toggle this behavior by using {}\n",
-                            status_colorizer("WLD"),
-                            "-",
-                            "-",
-                            "-",
-                            style("auto-filtering").yellow(),
-                            style(wc_length - url_len).cyan(),
-                            style("--dont-filter").yellow()
-                    );
-
+                if matches!(
+                    self.handles.config.output_level,
+                    OutputLevel::Default | OutputLevel::Quiet
+                ) {
+                    let msg = format_template!("{} {:>8} {:>9} {:>9} {:>9} Wildcard response is dynamic; {} ({} + url length) responses; toggle this behavior by using {}\n", method, wildcard.dynamic);
                    ferox_print(&msg, &PROGRESS_PRINTER);
                }
            } else if wc_length == wc2_length {
                wildcard.size = wc_length;

-                if !CONFIGURATION.quiet {
-                    let msg = format!(
-                        "{} {:>9} {:>9} {:>9} Wildcard response is static; {} {} responses; toggle this behavior by using {}\n",
-                        status_colorizer("WLD"),
-                        "-",
-                        "-",
-                        "-",
-                        style("auto-filtering").yellow(),
-                        style(wc_length).cyan(),
-                        style("--dont-filter").yellow()
-                    );
-
+                if matches!(
+                    self.handles.config.output_level,
+                    OutputLevel::Default | OutputLevel::Quiet
+                ) {
+                    let msg = format_template!("{} {:>8} {:>9} {:>9} {:>9} Wildcard response is static; {} {} responses; toggle this behavior by using {}\n", method, wildcard.size);
                    ferox_print(&msg, &PROGRESS_PRINTER);
                }
            }
+
+            self.send_filter(wildcard)?;
+        }
+
+        log::trace!("exit: wildcard_test");
+        Ok(2)
+    }
+
+    /// Generates a uuid and appends it to the given target url. The reasoning is that the randomly
+    /// generated unique string should not exist on and be served by the target web server.
+    ///
+    /// Once the unique url is created, the request is sent to the server. If the server responds
+    /// back with a valid status code, the response is considered to be a wildcard response. If that
+    /// wildcard response has a 3xx status code, that redirection location is displayed to the user.
+    async fn make_wildcard_request(
+        &self,
+        target: &FeroxUrl,
+        method: &str,
+        data: Option<&[u8]>,
+        length: usize,
+    ) -> Result<FeroxResponse> {
+        log::trace!("enter: make_wildcard_request({}, {})", target, length);
+
+        let unique_str = self.unique_string(length);
+
+        // To take care of slash when needed
+        let slash = if self.handles.config.add_slash {
+            Some("/")
        } else {
-            bar.inc(2);
-        }
-
-        log::trace!("exit: wildcard_test -> Some({:?})", wildcard);
-        return Some(wildcard);
-    }
-
-    log::trace!("exit: wildcard_test -> None");
-    None
-}
-
-/// Generates a uuid and appends it to the given target url. The reasoning is that the randomly
-/// generated unique string should not exist on and be served by the target web server.
-///
-/// Once the unique url is created, the request is sent to the server. If the server responds
-/// back with a valid status code, the response is considered to be a wildcard response. If that
-/// wildcard response has a 3xx status code, that redirection location is displayed to the user.
-async fn make_wildcard_request(
-    target_url: &str,
-    length: usize,
-    tx_file: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> Option<FeroxResponse> {
-    log::trace!(
-        "enter: make_wildcard_request({}, {}, {:?}, {:?})",
-        target_url,
-        length,
-        tx_file,
-        tx_stats,
-    );
-
-    let unique_str = unique_string(length);
-
-    let nonexistent = match format_url(
-        target_url,
-        &unique_str,
-        CONFIGURATION.add_slash,
-        &CONFIGURATION.queries,
-        None,
-        tx_stats.clone(),
-    ) {
-        Ok(url) => url,
-        Err(e) => {
-            log::error!("{}", e);
-            log::trace!("exit: make_wildcard_request -> None");
-            return None;
-        }
-    };
-
-    match make_request(
-        &CONFIGURATION.client,
-        &nonexistent.to_owned(),
-        tx_stats.clone(),
-    )
-    .await
-    {
-        Ok(response) => {
-            if CONFIGURATION
-                .status_codes
-                .contains(&response.status().as_u16())
-            {
-                // found a wildcard response
-                let mut ferox_response = FeroxResponse::from(response, true).await;
-                ferox_response.wildcard = true;
-
-                if !CONFIGURATION.quiet
-                    && !should_filter_response(&ferox_response, tx_stats.clone())
-                    && tx_file.send(ferox_response.clone()).is_err()
-                {
-                    return None;
-                }
-
-                log::trace!("exit: make_wildcard_request -> {}", ferox_response);
-                return Some(ferox_response);
-            }
-        }
-        Err(e) => {
-            log::warn!("{}", e);
-            log::trace!("exit: make_wildcard_request -> None");
-            return None;
-        }
-    }
-
-    log::trace!("exit: make_wildcard_request -> None");
-    None
-}
-
-/// Simply tries to connect to all given sites before starting to scan
-///
-/// In the event that no sites can be reached, the program will exit.
-///
-/// Any urls that are found to be alive are returned to the caller.
-pub async fn connectivity_test(
-    target_urls: &[String],
-    tx_stats: UnboundedSender<StatCommand>,
-) -> Vec<String> {
-    log::trace!(
-        "enter: connectivity_test({:?}, {:?})",
-        target_urls,
-        tx_stats
-    );
-
-    let mut good_urls = vec![];
-
-    for target_url in target_urls {
-        let request = match format_url(
-            target_url,
-            "",
-            CONFIGURATION.add_slash,
-            &CONFIGURATION.queries,
-            None,
-            tx_stats.clone(),
-        ) {
-            Ok(url) => url,
-            Err(e) => {
-                log::error!("{}", e);
-                continue;
-            }
+            None
        };

-        match make_request(&CONFIGURATION.client, &request, tx_stats.clone()).await {
-            Ok(_) => {
-                good_urls.push(target_url.to_owned());
+        let nonexistent_url = target.format(&unique_str, slash)?;
+
+        let response = logged_request(
+            &nonexistent_url.to_owned(),
+            method,
+            data,
+            self.handles.clone(),
+        )
+        .await?;
+
+        if self
+            .handles
+            .config
+            .status_codes
+            .contains(&response.status().as_u16())
+        {
+            // found a wildcard response
+
+            let mut ferox_response = FeroxResponse::from(
+                response,
+                &target.target,
+                method,
+                self.handles.config.output_level,
+            )
+            .await;
+            ferox_response.set_wildcard(true);
+
+            if self
+                .handles
+                .filters
+                .data
+                .should_filter_response(&ferox_response, self.handles.stats.tx.clone())
+            {
+                bail!("filtered response")
            }
-            Err(e) => {
-                if !CONFIGURATION.quiet {
-                    ferox_print(
-                        &format!("Could not connect to {}, skipping...", target_url),
-                        &PROGRESS_PRINTER,
-                    );
+
+            if matches!(
+                self.handles.config.output_level,
+                OutputLevel::Default | OutputLevel::Quiet
+            ) {
+                let boxed = Box::new(ferox_response.clone());
+                self.handles.output.send(Command::Report(boxed))?;
+            }
+
+            log::trace!("exit: make_wildcard_request -> {}", ferox_response);
+            return Ok(ferox_response);
+        }
+
+        log::trace!("exit: make_wildcard_request -> Err");
+        bail!("uninteresting status code")
+    }
+
+    /// Simply tries to connect to all given sites before starting to scan
+    ///
+    /// In the event that no sites can be reached, the program will exit.
+    ///
+    /// Any urls that are found to be alive are returned to the caller.
+    pub async fn connectivity(&self, target_urls: &[String]) -> Result<Vec<String>> {
+        log::trace!("enter: connectivity_test({:?})", target_urls);
+
+        let mut good_urls = vec![];
+
+        for target_url in target_urls {
+            let url = FeroxUrl::from_string(target_url, self.handles.clone());
+            let request = skip_fail!(url.format("", None));
+
+            let result = logged_request(&request, DEFAULT_METHOD, None, self.handles.clone()).await;
+
+            match result {
+                Ok(_) => {
+                    good_urls.push(target_url.to_owned());
+                }
+                Err(e) => {
+                    if matches!(
+                        self.handles.config.output_level,
+                        OutputLevel::Default | OutputLevel::Quiet
+                    ) {
+                        if e.to_string().contains(":SSL") {
+                            ferox_print(
+                                &format!("Could not connect to {} due to SSL errors (run with -k to ignore), skipping...", target_url),
+                                &PROGRESS_PRINTER,
+                            );
+                        } else {
+                            ferox_print(
+                                &format!("Could not connect to {}, skipping...", target_url),
+                                &PROGRESS_PRINTER,
+                            );
+                        }
+                    }
+                    log::warn!("{}", e);
                }
-                log::error!("{}", e);
            }
        }
+
+        if good_urls.is_empty() {
+            bail!("Could not connect to any target provided");
+        }
+
+        log::trace!("exit: connectivity_test -> {:?}", good_urls);
+        Ok(good_urls)
    }

-    if good_urls.is_empty() {
-        log::error!("Could not connect to any target provided, exiting.");
+    /// heuristic designed to detect when a server has directory listing enabled
+    pub async fn directory_listing(&self, target_url: &str) -> Result<Option<DirListingResult>> {
+        log::trace!("enter: directory_listing({})", target_url);
+
+        let tgt = if !target_url.ends_with('/') {
+            // if left unchanged, this function would be called against redirects that point to
+            // valid directories for most, if not all, directories beyond the initial urls.
+            // so, instead of `directory_listing("http://localhost") -> None` we get
+            // `directory_listing("http://localhost/") -> Some(DirListingResult)` if there is
+            // directory listing beyond the redirect
+            format!("{}/", target_url)
+        } else {
+            target_url.to_string()
+        };
+
+        let url = FeroxUrl::from_string(&tgt, self.handles.clone());
+        let request = url.format("", None)?;
+
+        let result = logged_request(&request, DEFAULT_METHOD, None, self.handles.clone()).await?;
+
+        let ferox_response = FeroxResponse::from(
+            result,
+            &url.target,
+            DEFAULT_METHOD,
+            self.handles.config.output_level,
+        )
+        .await;
+
+        let body = ferox_response.text();
+        let html = Html::parse_document(body);
+
+        let dirlist_type = self.detect_directory_listing(&html);
+
+        if dirlist_type.is_some() {
+            // folks that run things and step away/rely on logs need to be notified of directory
+            // listing, since they won't see the message on the bar; bastardizing FeroxMessage
+            // for ease of implementation. This could use a bit of polish at some point.
+            let msg = format!(
+                "detected directory listing: {} ({:?})",
+                target_url,
+                dirlist_type.unwrap()
+            );
+            let ferox_msg = FeroxMessage {
+                kind: "log".to_string(),
+                message: msg.clone(),
+                level: "MSG".to_string(),
+                time_offset: 0.0,
+                module: "feroxbuster::heuristics".to_string(),
+            };
+            self.handles
+                .output
+                .tx_file
+                .send(Command::WriteToDisk(Box::new(ferox_msg)))
+                .unwrap_or_default();
+
+            log::info!("{}", msg);
+
+            let result = DirListingResult {
+                dir_list_type: dirlist_type,
+                response: ferox_response,
+            };
+
+            log::trace!("exit: directory_listing -> {:?}", result);
+            return Ok(Some(result));
+        }
+
+        log::trace!("exit: directory_listing -> None");
+        Ok(None)
    }

-    log::trace!("exit: connectivity_test -> {:?}", good_urls);
+    /// Directory listing heuristic detection, uses <title> tag to make its determination. When
+    /// the inner html of <title> matches one of the following, a `DirListingType` is returned.
+    /// - apache: `Index of /`
+    /// - tomcat/python: `Directory Listing for /`
+    /// - ASP.NET: `Directory Listing -- /`
+    /// - <host> - /: iis, azure, skipping due to loose heuristic
+    fn detect_directory_listing(&self, html: &Html) -> Option<DirListingType> {
+        log::trace!("enter: detect_directory_listing(html body...)");

-    good_urls
+        let title_selector = Selector::parse("title").expect("couldn't parse title selector");
+
+        for t in html.select(&title_selector) {
+            let title = t.inner_html().to_lowercase();
+
+            let dirlist_type = if title.contains("directory listing for /") {
+                Some(DirListingType::TomCatOrPython)
+            } else if title.contains("index of /") {
+                Some(DirListingType::Apache)
+            } else if title.contains("directory listing -- /") {
+                Some(DirListingType::AspDotNet)
+            } else {
+                // IIS_AZURE purposely skipped for now
+                None
+            };
+
+            if dirlist_type.is_some() {
+                log::trace!("exit: detect_directory_listing -> {:?}", dirlist_type);
+                return dirlist_type;
+            }
+        }
+
+        log::trace!("exit: detect_directory_listing -> None");
+        None
+    }
 }

 #[cfg(test)]
@@ -278,16 +428,57 @@ mod tests {
    #[test]
    /// request a unique string of 32bytes * a value returns correct result
    fn heuristics_unique_string_returns_correct_length() {
+        let (handles, _) = Handles::for_testing(None, None);
+        let tester = HeuristicTests::new(Arc::new(handles));
        for i in 0..10 {
-            assert_eq!(unique_string(i).len(), i * 32);
+            assert_eq!(tester.unique_string(i).len(), i * 32);
        }
    }

    #[test]
-    /// simply test the default values for wildcardfilter, expect 0, 0
-    fn heuristics_wildcardfilter_dafaults() {
-        let wcf = WildcardFilter::default();
-        assert_eq!(wcf.size, 0);
-        assert_eq!(wcf.dynamic, 0);
+    /// `detect_directory_listing` correctly identifies tomcat/python instances
+    fn detect_directory_listing_finds_tomcat_python() {
+        let html = "<title>directory listing for /</title>";
+        let parsed = Html::parse_document(html);
+        let handles = Handles::for_testing(None, None);
+        let heuristics = HeuristicTests::new(Arc::new(handles.0));
+        let dirlist_type = heuristics.detect_directory_listing(&parsed);
+        assert!(matches!(
+            dirlist_type.unwrap(),
+            DirListingType::TomCatOrPython
+        ));
+    }
+
+    #[test]
+    /// `detect_directory_listing` correctly identifies apache instances
+    fn detect_directory_listing_finds_apache() {
+        let html = "<title>index of /</title>";
+        let parsed = Html::parse_document(html);
+        let handles = Handles::for_testing(None, None);
+        let heuristics = HeuristicTests::new(Arc::new(handles.0));
+        let dirlist_type = heuristics.detect_directory_listing(&parsed);
+        assert!(matches!(dirlist_type.unwrap(), DirListingType::Apache));
+    }
+
+    #[test]
+    /// `detect_directory_listing` correctly identifies ASP.NET instances
+    fn detect_directory_listing_finds_asp_dot_net() {
+        let html = "<title>directory listing -- /</title>";
+        let parsed = Html::parse_document(html);
+        let handles = Handles::for_testing(None, None);
+        let heuristics = HeuristicTests::new(Arc::new(handles.0));
+        let dirlist_type = heuristics.detect_directory_listing(&parsed);
+        assert!(matches!(dirlist_type.unwrap(), DirListingType::AspDotNet));
+    }
+
+    #[test]
+    /// `detect_directory_listing` returns None when heuristic doesn't match
+    fn detect_directory_listing_returns_none_as_default() {
+        let html = "<title>derp listing -- /</title>";
+        let parsed = Html::parse_document(html);
+        let handles = Handles::for_testing(None, None);
+        let heuristics = HeuristicTests::new(Arc::new(handles.0));
+        let dirlist_type = heuristics.detect_directory_listing(&parsed);
+        assert!(dirlist_type.is_none());
    }
 }
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,70 +1,89 @@
-pub mod utils;
+#![deny(clippy::all)]
+#![allow(clippy::mutex_atomic)]
+use anyhow::Result;
+use reqwest::StatusCode;
+use std::collections::HashSet;
+use tokio::{
+    sync::mpsc::{UnboundedReceiver, UnboundedSender},
+    task::JoinHandle,
+};
+
+use crate::event_handlers::Command;
+
 pub mod banner;
-pub mod client;
 pub mod config;
-pub mod extractor;
+mod client;
+pub mod event_handlers;
 pub mod filters;
 pub mod heuristics;
 pub mod logger;
-pub mod parser;
+mod parser;
 pub mod progress;
-pub mod reporter;
 pub mod scan_manager;
 pub mod scanner;
 pub mod statistics;
+mod traits;
+pub mod utils;
+mod extractor;
+mod macros;
+mod url;
+mod response;
+mod message;
+mod nlp;

-use crate::utils::{get_url_path_length, status_colorizer};
-use console::{style, Color};
-use reqwest::header::{HeaderName, HeaderValue};
-use reqwest::{header::HeaderMap, Response, StatusCode, Url};
-use serde::{ser::SerializeStruct, Deserialize, Deserializer, Serialize, Serializer};
-use serde_json::Value;
-use std::collections::HashMap;
-use std::convert::{TryFrom, TryInto};
-use std::str::FromStr;
-use std::{error, fmt};
-use tokio::sync::mpsc::{UnboundedReceiver, UnboundedSender};
+/// Alias for tokio::sync::mpsc::UnboundedSender<Command>
+pub(crate) type CommandSender = UnboundedSender<Command>;

-/// Generic Result type to ease error handling in async contexts
-pub type FeroxResult<T> = std::result::Result<T, Box<dyn error::Error + Send + Sync + 'static>>;
+/// Alias for tokio::sync::mpsc::UnboundedSender<Command>
+pub(crate) type CommandReceiver = UnboundedReceiver<Command>;

-/// Simple Error implementation to allow for custom error returns
-#[derive(Debug, Default)]
-pub struct FeroxError {
-    /// fancy string that can be printed via Display
-    pub message: String,
-}
-
-impl error::Error for FeroxError {}
-
-impl fmt::Display for FeroxError {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}", &self.message)
-    }
-}
+/// Alias for tokio::task::JoinHandle<anyhow::Result<()>>
+pub(crate) type Joiner = JoinHandle<Result<()>>;

 /// Generic mpsc::unbounded_channel type to tidy up some code
-pub type FeroxChannel<T> = (UnboundedSender<T>, UnboundedReceiver<T>);
+pub(crate) type FeroxChannel<T> = (UnboundedSender<T>, UnboundedReceiver<T>);
+
+/// Wrapper around the results of performing any kind of extraction against a target web page
+pub(crate) type ExtractionResult = HashSet<String>;

 /// Version pulled from Cargo.toml at compile time
-pub const VERSION: &str = env!("CARGO_PKG_VERSION");
+pub(crate) const VERSION: &str = env!("CARGO_PKG_VERSION");

 /// Maximum number of file descriptors that can be opened during a scan
-pub const DEFAULT_OPEN_FILE_LIMIT: usize = 8192;
+pub const DEFAULT_OPEN_FILE_LIMIT: u64 = 8192;

 /// Default value used to determine near-duplicate web pages (equivalent to 95%)
 pub const SIMILARITY_THRESHOLD: u32 = 95;

+/// Default set of extensions to Ignore when auto-collecting extensions during scans
+pub(crate) const DEFAULT_IGNORED_EXTENSIONS: [&str; 38] = [
+    "tif", "tiff", "ico", "cur", "bmp", "webp", "svg", "png", "jpg", "jpeg", "jfif", "gif", "avif",
+    "apng", "pjpeg", "pjp", "mov", "wav", "mpg", "mpeg", "mp3", "mp4", "m4a", "m4p", "m4v", "ogg",
+    "webm", "ogv", "oga", "flac", "aac", "3gp", "css", "zip", "xls", "xml", "gz", "tgz",
+];
+
 /// Default wordlist to use when `-w|--wordlist` isn't specified and not `wordlist` isn't set
 /// in a [ferox-config.toml](constant.DEFAULT_CONFIG_NAME.html) config file.
 ///
-/// defaults to kali's default install location:
+/// defaults to kali's default install location on linux:
 /// - `/usr/share/seclists/Discovery/Web-Content/raft-medium-directories.txt`
+///
+/// and to the current directory on windows
+/// - `.\seclists\Discovery\Web-Content\raft-medium-directories.txt`
+#[cfg(not(target_os = "windows"))]
 pub const DEFAULT_WORDLIST: &str =
    "/usr/share/seclists/Discovery/Web-Content/raft-medium-directories.txt";
+#[cfg(target_os = "windows")]
+pub const DEFAULT_WORDLIST: &str =
+    ".\\SecLists\\Discovery\\Web-Content\\raft-medium-directories.txt";
+pub const SECONDARY_WORDLIST: &str =
+    "/usr/local/share/seclists/Discovery/Web-Content/raft-medium-directories.txt";

 /// Number of milliseconds to wait between polls of `PAUSE_SCAN` when user pauses a scan
-pub static SLEEP_DURATION: u64 = 500;
+pub(crate) const SLEEP_DURATION: u64 = 500;
+
+/// The percentage of requests as errors it takes to be deemed too high
+pub const HIGH_ERROR_RATIO: f64 = 0.90;

 /// Default list of status codes to report
 ///
@@ -77,7 +96,8 @@ pub static SLEEP_DURATION: u64 = 500;
 /// * 401 Unauthorized
 /// * 403 Forbidden
 /// * 405 Method Not Allowed
-pub const DEFAULT_STATUS_CODES: [StatusCode; 9] = [
+/// * 500 Internal Server Error
+pub const DEFAULT_STATUS_CODES: [StatusCode; 10] = [
    StatusCode::OK,
    StatusCode::NO_CONTENT,
    StatusCode::MOVED_PERMANENTLY,
@@ -87,449 +107,31 @@ pub const DEFAULT_STATUS_CODES: [StatusCode; 9] = [
    StatusCode::UNAUTHORIZED,
    StatusCode::FORBIDDEN,
    StatusCode::METHOD_NOT_ALLOWED,
+    StatusCode::INTERNAL_SERVER_ERROR,
 ];

+/// Default method for requests
+pub(crate) const DEFAULT_METHOD: &str = "GET";
+
 /// Default filename for config file settings
 ///
 /// Expected location is in the same directory as the feroxbuster binary.
 pub const DEFAULT_CONFIG_NAME: &str = "ferox-config.toml";
-
-/// FeroxSerialize trait; represents different types that are Serialize and also implement
-/// as_str / as_json methods
-pub trait FeroxSerialize: Serialize {
-    /// Return a String representation of the object, generally the human readable version of the
-    /// implementor
-    fn as_str(&self) -> String;
-
-    /// Return an NDJSON representation of the object
-    fn as_json(&self) -> String;
-}
-
-/// A `FeroxResponse`, derived from a `Response` to a submitted `Request`
-#[derive(Debug, Clone)]
-pub struct FeroxResponse {
-    /// The final `Url` of this `FeroxResponse`
-    url: Url,
-
-    /// The `StatusCode` of this `FeroxResponse`
-    status: StatusCode,
-
-    /// The full response text
-    text: String,
-
-    /// The content-length of this response, if known
-    content_length: u64,
-
-    /// The number of lines contained in the body of this response, if known
-    line_count: usize,
-
-    /// The number of words contained in the body of this response, if known
-    word_count: usize,
-
-    /// The `Headers` of this `FeroxResponse`
-    headers: HeaderMap,
-
-    /// Wildcard response status
-    wildcard: bool,
-}
-
-/// Implement Display for FeroxResponse
-impl fmt::Display for FeroxResponse {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(
-            f,
-            "FeroxResponse {{ url: {}, status: {}, content-length: {} }}",
-            self.url(),
-            self.status(),
-            self.content_length()
-        )
-    }
-}
-
-/// `FeroxResponse` implementation
-impl FeroxResponse {
-    /// Get the `StatusCode` of this `FeroxResponse`
-    pub fn status(&self) -> &StatusCode {
-        &self.status
-    }
-
-    /// Get the final `Url` of this `FeroxResponse`.
-    pub fn url(&self) -> &Url {
-        &self.url
-    }
-
-    /// Get the full response text
-    pub fn text(&self) -> &str {
-        &self.text
-    }
-
-    /// Get the `Headers` of this `FeroxResponse`
-    pub fn headers(&self) -> &HeaderMap {
-        &self.headers
-    }
-
-    /// Get the content-length of this response, if known
-    pub fn content_length(&self) -> u64 {
-        self.content_length
-    }
-
-    /// Set `FeroxResponse`'s `url` attribute, has no affect if an error occurs
-    pub fn set_url(&mut self, url: &str) {
-        match Url::parse(&url) {
-            Ok(url) => {
-                self.url = url;
-            }
-            Err(e) => {
-                log::error!("Could not parse {} into a Url: {}", url, e);
-            }
-        };
-    }
-
-    /// Make a reasonable guess at whether the response is a file or not
-    ///
-    /// Examines the last part of a path to determine if it has an obvious extension
-    /// i.e. http://localhost/some/path/stuff.js where stuff.js indicates a file
-    ///
-    /// Additionally, inspects query parameters, as they're also often indicative of a file
-    pub fn is_file(&self) -> bool {
-        let has_extension = match self.url.path_segments() {
-            Some(path) => {
-                if let Some(last) = path.last() {
-                    last.contains('.') // last segment has some sort of extension, probably
-                } else {
-                    false
-                }
-            }
-            None => false,
-        };
-
-        self.url.query_pairs().count() > 0 || has_extension
-    }
-
-    /// Returns line count of the response text.
-    pub fn line_count(&self) -> usize {
-        self.line_count
-    }
-
-    /// Returns word count of the response text.
-    pub fn word_count(&self) -> usize {
-        self.word_count
-    }
-
-    /// Create a new `FeroxResponse` from the given `Response`
-    pub async fn from(response: Response, read_body: bool) -> Self {
-        let url = response.url().clone();
-        let status = response.status();
-        let headers = response.headers().clone();
-        let content_length = response.content_length().unwrap_or(0);
-
-        let text = if read_body {
-            // .text() consumes the response, must be called last
-            // additionally, --extract-links is currently the only place we use the body of the
-            // response, so we forego the processing if not performing extraction
-            match response.text().await {
-                // await the response's body
-                Ok(text) => text,
-                Err(e) => {
-                    log::error!("Could not parse body from response: {}", e);
-                    String::new()
-                }
-            }
-        } else {
-            String::new()
-        };
-
-        let line_count = text.lines().count();
-        let word_count = text.lines().map(|s| s.split_whitespace().count()).sum();
-
-        FeroxResponse {
-            url,
-            status,
-            content_length,
-            text,
-            headers,
-            line_count,
-            word_count,
-            wildcard: false,
-        }
-    }
-}
-
-/// Implement FeroxSerialusize::from(ize for FeroxRespons)e
-impl FeroxSerialize for FeroxResponse {
-    /// Simple wrapper around create_report_string
-    fn as_str(&self) -> String {
-        let lines = self.line_count().to_string();
-        let words = self.word_count().to_string();
-        let chars = self.content_length().to_string();
-        let status = self.status().as_str();
-        let wild_status = status_colorizer("WLD");
-
-        if self.wildcard {
-            // response is a wildcard, special messages abound when this is the case...
-
-            // create the base message
-            let mut message = format!(
-                "{} {:>8}l {:>8}w {:>8}c Got {} for {} (url length: {})\n",
-                wild_status,
-                lines,
-                words,
-                chars,
-                status_colorizer(&status),
-                self.url(),
-                get_url_path_length(&self.url())
-            );
-
-            if self.status().is_redirection() {
-                // when it's a redirect, show where it goes, if possible
-                if let Some(next_loc) = self.headers().get("Location") {
-                    let next_loc_str = next_loc.to_str().unwrap_or("Unknown");
-
-                    let redirect_msg = format!(
-                        "{} {:>9} {:>9} {:>9} {} redirects to => {}\n",
-                        wild_status,
-                        "-",
-                        "-",
-                        "-",
-                        self.url(),
-                        next_loc_str
-                    );
-
-                    message.push_str(&redirect_msg);
-                }
-            }
-
-            // base message + redirection message (if appropriate)
-            message
-        } else {
-            // not a wildcard, just create a normal entry
-            utils::create_report_string(
-                self.status.as_str(),
-                &lines,
-                &words,
-                &chars,
-                self.url().as_str(),
-            )
-        }
-    }
-
-    /// Create an NDJSON representation of the FeroxResponse
-    ///
-    /// (expanded for clarity)
-    /// ex:
-    /// {
-    ///    "type":"response",
-    ///    "url":"https://localhost.com/images",
-    ///    "path":"/images",
-    ///    "status":301,
-    ///    "content_length":179,
-    ///    "line_count":10,
-    ///    "word_count":16,
-    ///    "headers":{
-    ///       "x-content-type-options":"nosniff",
-    ///       "strict-transport-security":"max-age=31536000; includeSubDomains",
-    ///       "x-frame-options":"SAMEORIGIN",
-    ///       "connection":"keep-alive",
-    ///       "server":"nginx/1.16.1",
-    ///       "content-type":"text/html; charset=UTF-8",
-    ///       "referrer-policy":"origin-when-cross-origin",
-    ///       "content-security-policy":"default-src 'none'",
-    ///       "access-control-allow-headers":"X-Requested-With",
-    ///       "x-xss-protection":"1; mode=block",
-    ///       "content-length":"179",
-    ///       "date":"Mon, 23 Nov 2020 15:33:24 GMT",
-    ///       "location":"/images/",
-    ///       "access-control-allow-origin":"https://localhost.com"
-    ///    }
-    /// }\n
-    fn as_json(&self) -> String {
-        if let Ok(mut json) = serde_json::to_string(&self) {
-            json.push('\n');
-            json
-        } else {
-            format!("{{\"error\":\"could not convert {} to json\"}}", self.url())
-        }
-    }
-}
-
-/// Serialize implementation for FeroxResponse
-impl Serialize for FeroxResponse {
-    /// Function that handles serialization of a FeroxResponse to NDJSON
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let mut headers = HashMap::new();
-        let mut state = serializer.serialize_struct("FeroxResponse", 7)?;
-
-        // need to convert the HeaderMap to a HashMap in order to pass it to the serializer
-        for (key, value) in &self.headers {
-            let k = key.as_str().to_owned();
-            let v = String::from_utf8_lossy(value.as_bytes());
-            headers.insert(k, v);
-        }
-
-        state.serialize_field("type", "response")?;
-        state.serialize_field("url", self.url.as_str())?;
-        state.serialize_field("path", self.url.path())?;
-        state.serialize_field("wildcard", &self.wildcard)?;
-        state.serialize_field("status", &self.status.as_u16())?;
-        state.serialize_field("content_length", &self.content_length)?;
-        state.serialize_field("line_count", &self.line_count)?;
-        state.serialize_field("word_count", &self.word_count)?;
-        state.serialize_field("headers", &headers)?;
-
-        state.end()
-    }
-}
-
-/// Deserialize implementation for FeroxResponse
-impl<'de> Deserialize<'de> for FeroxResponse {
-    /// Deserialize a FeroxResponse from a serde_json::Value
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let mut response = Self {
-            url: Url::parse("http://localhost").unwrap(),
-            status: StatusCode::OK,
-            text: String::new(),
-            content_length: 0,
-            headers: HeaderMap::new(),
-            wildcard: false,
-            line_count: 0,
-            word_count: 0,
-        };
-
-        let map: HashMap<String, Value> = HashMap::deserialize(deserializer)?;
-
-        for (key, value) in &map {
-            match key.as_str() {
-                "url" => {
-                    if let Some(url) = value.as_str() {
-                        if let Ok(parsed) = Url::parse(url) {
-                            response.url = parsed;
-                        }
-                    }
-                }
-                "status" => {
-                    if let Some(num) = value.as_u64() {
-                        if let Ok(smaller) = u16::try_from(num) {
-                            if let Ok(status) = StatusCode::from_u16(smaller) {
-                                response.status = status;
-                            }
-                        }
-                    }
-                }
-                "content_length" => {
-                    if let Some(num) = value.as_u64() {
-                        response.content_length = num;
-                    }
-                }
-                "line_count" => {
-                    if let Some(num) = value.as_u64() {
-                        response.line_count = num.try_into().unwrap_or_default();
-                    }
-                }
-                "word_count" => {
-                    if let Some(num) = value.as_u64() {
-                        response.word_count = num.try_into().unwrap_or_default();
-                    }
-                }
-                "headers" => {
-                    let mut headers = HeaderMap::<HeaderValue>::default();
-
-                    if let Some(map_headers) = value.as_object() {
-                        for (h_key, h_value) in map_headers {
-                            let h_value_str = h_value.as_str().unwrap_or("");
-                            let h_name = HeaderName::from_str(h_key)
-                                .unwrap_or_else(|_| HeaderName::from_str("Unknown").unwrap());
-                            let h_value_parsed = HeaderValue::from_str(h_value_str)
-                                .unwrap_or_else(|_| HeaderValue::from_str("Unknown").unwrap());
-                            headers.insert(h_name, h_value_parsed);
-                        }
-                    }
-
-                    response.headers = headers;
-                }
-                "wildcard" => {
-                    if let Some(result) = value.as_bool() {
-                        response.wildcard = result;
-                    }
-                }
-                _ => {}
-            }
-        }
-
-        Ok(response)
-    }
-}
-
-#[derive(Serialize, Deserialize, Default)]
-/// Representation of a log entry, can be represented as a human readable string or JSON
-pub struct FeroxMessage {
-    #[serde(rename = "type")]
-    /// Name of this type of struct, used for serialization, i.e. `{"type":"log"}`
-    kind: String,
-
-    /// The log message
-    pub message: String,
-
-    /// The log level
-    pub level: String,
-
-    /// The number of seconds elapsed since the scan started
-    pub time_offset: f32,
-
-    /// The module from which log::* was called
-    pub module: String,
-}
-
-/// Implementation of FeroxMessage
-impl FeroxSerialize for FeroxMessage {
-    /// Create an NDJSON representation of the log message
-    ///
-    /// (expanded for clarity)
-    /// ex:
-    /// {
-    ///   "type": "log",
-    ///   "message": "Sent https://localhost/api to file handler",
-    ///   "level": "DEBUG",
-    ///   "time_offset": 0.86333454,
-    ///   "module": "feroxbuster::reporter"
-    /// }\n
-    fn as_json(&self) -> String {
-        if let Ok(mut json) = serde_json::to_string(&self) {
-            json.push('\n');
-            json
-        } else {
-            String::from("{\"error\":\"could not convert to json\"}")
-        }
-    }
-
-    /// Create a string representation of the log message
-    ///
-    /// ex:  301       10l       16w      173c https://localhost/api
-    fn as_str(&self) -> String {
-        let (level_name, level_color) = match self.level.as_str() {
-            "ERROR" => ("ERR", Color::Red),
-            "WARN" => ("WRN", Color::Red),
-            "INFO" => ("INF", Color::Cyan),
-            "DEBUG" => ("DBG", Color::Yellow),
-            "TRACE" => ("TRC", Color::Magenta),
-            "WILDCARD" => ("WLD", Color::Cyan),
-            _ => ("UNK", Color::White),
-        };
-
-        format!(
-            "{} {:10.03} {} {}\n",
-            style(level_name).bg(level_color).black(),
-            style(self.time_offset).dim(),
-            self.module,
-            style(&self.message).dim(),
-        )
-    }
-}
+/// User agents to select from when random agent is being used
+pub const USER_AGENTS: [&str; 12] = [
+    "Mozilla/5.0 (Linux; Android 8.0.0; SM-G960F Build/R16NW) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36",
+    "Mozilla/5.0 (iPhone; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1",
+    "Mozilla/5.0 (Windows Phone 10.0; Android 6.0.1; Microsoft; RM-1152) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Mobile Safari/537.36 Edge/15.15254",
+    "Mozilla/5.0 (Linux; Android 7.0; Pixel C Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/52.0.2743.98 Safari/537.36",
+    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246",
+    "Mozilla/5.0 (X11; CrOS x86_64 8172.45.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.64 Safari/537.36",
+    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_2) AppleWebKit/601.3.9 (KHTML, like Gecko) Version/9.0.2 Safari/601.3.9",
+    "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36",
+    "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:15.0) Gecko/20100101 Firefox/15.0.1",
+    "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
+    "Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)",
+    "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)",
+];

 #[cfg(test)]
 mod tests {
@@ -555,46 +157,4 @@ mod tests {
    fn default_version() {
        assert_eq!(VERSION, env!("CARGO_PKG_VERSION"));
    }
-
-    #[test]
-    /// test as_str method of FeroxMessage
-    fn ferox_message_as_str_returns_string_with_newline() {
-        let message = FeroxMessage {
-            message: "message".to_string(),
-            module: "utils".to_string(),
-            time_offset: 1.0,
-            level: "INFO".to_string(),
-            kind: "log".to_string(),
-        };
-        let message_str = message.as_str();
-
-        assert!(message_str.contains("INF"));
-        assert!(message_str.contains("1.000"));
-        assert!(message_str.contains("utils"));
-        assert!(message_str.contains("message"));
-        assert!(message_str.ends_with('\n'));
-    }
-
-    #[test]
-    /// test as_json method of FeroxMessage
-    fn ferox_message_as_json_returns_json_representation_of_ferox_message_with_newline() {
-        let message = FeroxMessage {
-            message: "message".to_string(),
-            module: "utils".to_string(),
-            time_offset: 1.0,
-            level: "INFO".to_string(),
-            kind: "log".to_string(),
-        };
-
-        let message_str = message.as_json();
-
-        let error_margin = f32::EPSILON;
-
-        let json: FeroxMessage = serde_json::from_str(&message_str).unwrap();
-        assert_eq!(json.module, message.module);
-        assert_eq!(json.message, message.message);
-        assert!((json.time_offset - message.time_offset).abs() < error_margin);
-        assert_eq!(json.level, message.level);
-        assert_eq!(json.kind, message.kind);
-    }
 }
--- a/src/logger.rs
+++ b/src/logger.rs
@@ -1,24 +1,31 @@
-use crate::{
-    config::{CONFIGURATION, PROGRESS_PRINTER},
-    reporter::safe_file_write,
-    utils::open_file,
-    FeroxMessage, FeroxSerialize,
-};
-use env_logger::Builder;
 use std::env;
+use std::fs::OpenOptions;
+use std::io::BufWriter;
+use std::sync::{Arc, RwLock};
 use std::time::Instant;

+use anyhow::{Context, Result};
+use env_logger::Builder;
+
+use crate::{
+    config::Configuration,
+    message::FeroxMessage,
+    progress::PROGRESS_PRINTER,
+    traits::FeroxSerialize,
+    utils::{fmt_err, write_to},
+};
+
 /// Create a customized instance of
 /// [env_logger::Logger](https://docs.rs/env_logger/latest/env_logger/struct.Logger.html)
 /// with timer offset/color and set the log level based on `verbosity`
-pub fn initialize(verbosity: u8) {
+pub fn initialize(config: Arc<Configuration>) -> Result<()> {
    // use occurrences of -v on commandline to or verbosity = N in feroxconfig.toml to set
    // log level for the application; respects already specified RUST_LOG environment variable
    match env::var("RUST_LOG") {
        Ok(_) => {} // RUST_LOG found, don't override
        Err(_) => {
            // only set log level based on verbosity when RUST_LOG variable doesn't exist
-            match verbosity {
+            match config.verbosity {
                0 => (),
                1 => env::set_var("RUST_LOG", "warn"),
                2 => env::set_var("RUST_LOG", "info"),
@@ -31,12 +38,22 @@ pub fn initialize(verbosity: u8) {
    let start = Instant::now();
    let mut builder = Builder::from_default_env();

-    let debug_file = open_file(&CONFIGURATION.debug_log);
+    let file = if !config.debug_log.is_empty() {
+        let f = OpenOptions::new() // std fs
+            .create(true)
+            .append(true)
+            .open(&config.debug_log)
+            .with_context(|| fmt_err(&format!("Could not open {}", &config.debug_log)))?;
+
+        let mut writer = BufWriter::new(f);

-    if let Some(buffered_file) = debug_file.clone() {
        // write out the configuration to the debug file if it exists
-        safe_file_write(&*CONFIGURATION, buffered_file, CONFIGURATION.json);
-    }
+        write_to(&*config, &mut writer, config.json)?;
+
+        Some(Arc::new(RwLock::new(writer)))
+    } else {
+        None
+    };

    builder
        .format(move |_, record| {
@@ -48,13 +65,17 @@ pub fn initialize(verbosity: u8) {
                kind: "log".to_string(),
            };

-            PROGRESS_PRINTER.println(&log_entry.as_str());
+            PROGRESS_PRINTER.println(log_entry.as_str());

-            if let Some(buffered_file) = debug_file.clone() {
-                safe_file_write(&log_entry, buffered_file, CONFIGURATION.json);
+            if let Some(buffered_file) = file.clone() {
+                if let Ok(mut unlocked) = buffered_file.write() {
+                    let _ = write_to(&log_entry, &mut unlocked, config.json);
+                }
            }

            Ok(())
        })
        .init();
+
+    Ok(())
 }
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -0,0 +1,23 @@
+#![macro_use]
+
+#[macro_export]
+/// wrapper to improve code readability
+macro_rules! send_command {
+    ($tx:expr, $value:expr) => {
+        $tx.send($value).unwrap_or_default();
+    };
+}
+
+#[macro_export]
+/// while looping, check for a Result, if Ok return the value, if Err, continue
+macro_rules! skip_fail {
+    ($res:expr) => {
+        match $res {
+            Ok(val) => val,
+            Err(e) => {
+                log::warn!("{}", fmt_err(&format!("{}; skipping...", e)));
+                continue;
+            }
+        }
+    };
+}
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,105 +1,80 @@
-use crossterm::event::{self, Event, KeyCode};
+use std::io::stdin;
+use std::{
+    env::args,
+    fs::{create_dir, remove_file, File},
+    io::{stderr, BufRead, BufReader},
+    ops::Index,
+    path::Path,
+    process::Command,
+    sync::{atomic::Ordering, Arc},
+};
+
+use anyhow::{bail, Context, Result};
+use futures::StreamExt;
+use tokio::{
+    io,
+    sync::{oneshot, Semaphore},
+};
+use tokio_util::codec::{FramedRead, LinesCodec};
+
 use feroxbuster::{
-    banner,
-    config::{CONFIGURATION, PROGRESS_BAR, PROGRESS_PRINTER},
-    heuristics, logger,
-    progress::{add_bar, BarType},
-    reporter,
-    scan_manager::{self, ScanStatus, PAUSE_SCAN},
-    scanner::{self, scan_url, SCANNED_URLS},
-    statistics::{
-        self,
-        StatCommand::{self, CreateBar, LoadStats, UpdateUsizeField},
-        StatField::InitialTargets,
-        Stats,
+    banner::{Banner, UPDATE_URL},
+    config::{Configuration, OutputLevel},
+    event_handlers::{
+        Command::{
+            AddHandles, CreateBar, Exit, JoinTasks, LoadStats, ScanInitialUrls, UpdateWordlist,
+        },
+        FiltersHandler, Handles, ScanHandler, StatsHandler, Tasks, TermInputHandler,
+        TermOutHandler, SCAN_COMPLETE,
    },
-    update_stat,
-    utils::{ferox_print, get_current_depth, module_colorizer, status_colorizer},
-    FeroxError, FeroxResponse, FeroxResult, SLEEP_DURATION, VERSION,
+    filters, heuristics, logger,
+    progress::{PROGRESS_BAR, PROGRESS_PRINTER},
+    scan_manager::{self, ScanType},
+    scanner,
+    utils::{fmt_err, slugify_filename},
+    SECONDARY_WORDLIST,
 };
 #[cfg(not(target_os = "windows"))]
 use feroxbuster::{utils::set_open_file_limit, DEFAULT_OPEN_FILE_LIMIT};
-use futures::StreamExt;
-use std::{
-    collections::HashSet,
-    convert::TryInto,
-    fs::File,
-    io::{stderr, BufRead, BufReader},
-    process,
-    sync::{
-        atomic::{AtomicBool, Ordering},
-        Arc,
-    },
-    thread::sleep,
-    time::Duration,
-};
-use tokio::{io, sync::mpsc::UnboundedSender, task::JoinHandle};
-use tokio_util::codec::{FramedRead, LinesCodec};
+use lazy_static::lazy_static;
+use regex::Regex;

-/// Atomic boolean flag, used to determine whether or not the terminal input handler should exit
-pub static SCAN_COMPLETE: AtomicBool = AtomicBool::new(false);
-
-/// Handles specific key events triggered by the user over stdin
-fn terminal_input_handler() {
-    log::trace!("enter: terminal_input_handler");
-
-    loop {
-        if PAUSE_SCAN.load(Ordering::Relaxed) {
-            // if the scan is already paused, we don't want this event poller fighting the user
-            // over stdin
-            sleep(Duration::from_millis(SLEEP_DURATION));
-        } else if event::poll(Duration::from_millis(SLEEP_DURATION)).unwrap_or(false) {
-            // It's guaranteed that the `read()` won't block when the `poll()`
-            // function returns `true`
-
-            if let Ok(key_pressed) = event::read() {
-                // ignore any other keys
-                if key_pressed == Event::Key(KeyCode::Enter.into()) {
-                    // if the user presses Enter, set PAUSE_SCAN to true. The interactive menu
-                    // will be triggered and will handle setting PAUSE_SCAN to false
-                    PAUSE_SCAN.store(true, Ordering::Release);
-                }
-            }
-        } else {
-            // Timeout expired and no `Event` is available; use the timeout to check SCAN_COMPLETE
-            if SCAN_COMPLETE.load(Ordering::Relaxed) {
-                // scan has been marked complete by main, time to exit the loop
-                break;
-            }
-        }
-    }
-    log::trace!("exit: terminal_input_handler");
+lazy_static! {
+    /// Limits the number of parallel scans active at any given time when using --parallel
+    static ref PARALLEL_LIMITER: Semaphore = Semaphore::new(0);
 }

-/// Create a HashSet of Strings from the given wordlist then stores it inside an Arc
-fn get_unique_words_from_wordlist(path: &str) -> FeroxResult<Arc<HashSet<String>>> {
+/// Create a Vec of Strings from the given wordlist then stores it inside an Arc
+fn get_unique_words_from_wordlist(path: &str) -> Result<Arc<Vec<String>>> {
    log::trace!("enter: get_unique_words_from_wordlist({})", path);
+    let mut trimmed_word = false;

-    let file = match File::open(&path) {
-        Ok(f) => f,
-        Err(e) => {
-            log::error!("Could not open wordlist: {}", e);
-            log::trace!("exit: get_unique_words_from_wordlist -> {}", e);
-
-            return Err(Box::new(e));
-        }
-    };
+    let file = File::open(path).with_context(|| format!("Could not open {}", path))?;

    let reader = BufReader::new(file);

-    let mut words = HashSet::new();
+    // this empty string ensures that we call Requester::request with the base url, i.e.
+    // `http://localhost/` instead of going straight into `http://localhost/WORD.EXT`.
+    // for vanilla scans, it doesn't matter all that much, but it can be a significant difference
+    // when `-e` is used, depending on the content at the base url.
+    let mut words = vec![String::from("")];

    for line in reader.lines() {
-        let result = match line {
-            Ok(l) => l,
-            Err(_) => continue,
-        };
+        line.map(|result| {
+            if !result.starts_with('#') && !result.is_empty() {
+                if result.starts_with('/') {
+                    words.push(result.trim_start_matches('/').to_string());
+                    trimmed_word = true;
+                } else {
+                    words.push(result);
+                }
+            }
+        })
+        .ok();
+    }

-        if result.starts_with('#') || result.is_empty() {
-            continue;
-        }
-
-        words.insert(result);
+    if trimmed_word {
+        log::warn!("Some words in the wordlist started with a leading forward-slash; those words were trimmed (i.e. /word -> word)");
    }

    log::trace!(
@@ -111,37 +86,14 @@ fn get_unique_words_from_wordlist(path: &str) -> FeroxResult<Arc<HashSet<String>
 }

 /// Determine whether it's a single url scan or urls are coming from stdin, then scan as needed
-async fn scan(
-    targets: Vec<String>,
-    stats: Arc<Stats>,
-    tx_term: UnboundedSender<FeroxResponse>,
-    tx_file: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> FeroxResult<()> {
-    log::trace!(
-        "enter: scan({:?}, {:?}, {:?}, {:?}, {:?})",
-        targets,
-        stats,
-        tx_term,
-        tx_file,
-        tx_stats
-    );
-    // cloning an Arc is cheap (it's basically a pointer into the heap)
-    // so that will allow for cheap/safe sharing of a single wordlist across multi-target scans
-    // as well as additional directories found as part of recursion
-    let words =
-        tokio::spawn(async move { get_unique_words_from_wordlist(&CONFIGURATION.wordlist) })
-            .await??;
+async fn scan(targets: Vec<String>, handles: Arc<Handles>) -> Result<()> {
+    log::trace!("enter: scan({:?}, {:?})", targets, handles);

-    if words.len() == 0 {
-        let err = FeroxError {
-            message: format!("Did not find any words in {}", CONFIGURATION.wordlist),
-        };
+    let scanned_urls = handles.ferox_scans()?;

-        return Err(Box::new(err));
-    }
+    handles.send_scan_command(UpdateWordlist(handles.wordlist.clone()))?;

-    scanner::initialize(words.len(), &CONFIGURATION, tx_stats.clone()).await;
+    scanner::initialize(handles.wordlist.len(), handles.clone()).await?;

    // at this point, the stat thread's progress bar can be created; things that needed to happen
    // first:
@@ -149,70 +101,35 @@ async fn scan(
    // - scanner initialized (this sent expected requests per directory to the stats thread, which
    //   having been set, makes it so the progress bar doesn't flash as full before anything has
    //   even happened
-    update_stat!(tx_stats, CreateBar);
+    if matches!(handles.config.output_level, OutputLevel::Default) {
+        // only create the bar if no --silent|--quiet
+        handles.stats.send(CreateBar)?;

-    if CONFIGURATION.resumed {
-        update_stat!(tx_stats, LoadStats(CONFIGURATION.resume_from.clone()));
-
-        SCANNED_URLS.print_known_responses();
-
-        if let Ok(scans) = SCANNED_URLS.scans.lock() {
-            for scan in scans.iter() {
-                if let Ok(locked_scan) = scan.lock() {
-                    if matches!(locked_scan.status, ScanStatus::Complete) {
-                        // these scans are complete, and just need to be shown to the user
-                        let pb = add_bar(
-                            &locked_scan.url,
-                            words.len().try_into().unwrap_or_default(),
-                            BarType::Message,
-                        );
-                        pb.finish();
-                    }
-                }
-            }
-        }
+        // blocks until the bar is created / avoids race condition in first two bars
+        handles.stats.sync().await?;
    }

-    let mut tasks = vec![];
-
-    for target in targets {
-        let word_clone = words.clone();
-        let term_clone = tx_term.clone();
-        let file_clone = tx_file.clone();
-        let tx_stats_clone = tx_stats.clone();
-        let stats_clone = stats.clone();
-
-        let task = tokio::spawn(async move {
-            let base_depth = get_current_depth(&target);
-            scan_url(
-                &target,
-                word_clone,
-                base_depth,
-                stats_clone,
-                term_clone,
-                file_clone,
-                tx_stats_clone,
-            )
-            .await;
-        });
-
-        tasks.push(task);
+    if handles.config.resumed {
+        // display what has already been completed
+        scanned_urls.print_known_responses();
+        scanned_urls.print_completed_bars(handles.wordlist.len())?;
    }

-    // drive execution of all accumulated futures
-    futures::future::join_all(tasks).await;
+    log::debug!("sending {:?} to be scanned as initial targets", targets);
+    handles.send_scan_command(ScanInitialUrls(targets))?;
+
    log::trace!("exit: scan");

    Ok(())
 }

 /// Get targets from either commandline or stdin, pass them back to the caller as a Result<Vec>
-async fn get_targets() -> FeroxResult<Vec<String>> {
-    log::trace!("enter: get_targets");
+async fn get_targets(handles: Arc<Handles>) -> Result<Vec<String>> {
+    log::trace!("enter: get_targets({:?})", handles);

    let mut targets = vec![];

-    if CONFIGURATION.stdin {
+    if handles.config.stdin {
        // got targets from stdin, i.e. cat sites | ./feroxbuster ...
        // just need to read the targets from stdin and spawn a future for each target found
        let stdin = io::stdin(); // tokio's stdin, not std
@@ -221,24 +138,52 @@ async fn get_targets() -> FeroxResult<Vec<String>> {
        while let Some(line) = reader.next().await {
            targets.push(line?);
        }
-    } else if CONFIGURATION.resumed {
+    } else if handles.config.resumed {
        // resume-from can't be used with --url, and --stdin is marked false for every resumed
        // scan, making it mutually exclusive from either of the other two options
-        if let Ok(scans) = SCANNED_URLS.scans.lock() {
+        let ferox_scans = handles.ferox_scans()?;
+
+        if let Ok(scans) = ferox_scans.scans.read() {
            for scan in scans.iter() {
-                // SCANNED_URLS gets deserialized scans added to it at program start if --resume-from
+                // ferox_scans gets deserialized scans added to it at program start if --resume-from
                // is used, so scans that aren't marked complete still need to be scanned
-                if let Ok(locked_scan) = scan.lock() {
-                    if matches!(locked_scan.status, ScanStatus::Complete) {
-                        // this one's already done, ignore it
-                        continue;
-                    }
-                    targets.push(locked_scan.url.to_owned());
+                if scan.is_complete() || matches!(scan.scan_type, ScanType::File) {
+                    // this one's already done, or it's not a directory, ignore it
+                    continue;
                }
+
+                targets.push(scan.url().to_owned());
+            }
+        };
+    } else {
+        targets.push(handles.config.target_url.clone());
+    }
+
+    // remove footgun that arises if a --dont-scan value matches on a base url
+    for target in targets.iter_mut() {
+        for denier in &handles.config.regex_denylist {
+            if denier.is_match(target) {
+                bail!(
+                    "The regex '{}' matches {}; the scan will never start",
+                    denier,
+                    target
+                );
            }
        }
-    } else {
-        targets.push(CONFIGURATION.target_url.clone());
+        for denier in &handles.config.url_denylist {
+            if denier.as_str().trim_end_matches('/') == target.trim_end_matches('/') {
+                bail!(
+                    "The url '{}' matches {}; the scan will never start",
+                    denier,
+                    target
+                );
+            }
+        }
+
+        if !target.starts_with("http") && !target.starts_with("https") {
+            // --url hackerone.com
+            *target = format!("https://{}", target);
+        }
    }

    log::trace!("exit: get_targets -> {:?}", targets);
@@ -248,7 +193,7 @@ async fn get_targets() -> FeroxResult<Vec<String>> {

 /// async main called from real main, broken out in this way to allow for some synchronous code
 /// to be executed before bringing the tokio runtime online
-async fn wrapped_main() {
+async fn wrapped_main(config: Arc<Configuration>) -> Result<()> {
    // join can only be called once, otherwise it causes the thread to panic
    tokio::task::spawn_blocking(move || {
        // ok, lazy_static! uses (unsurprisingly in retrospect) a lazy loading model where the
@@ -262,17 +207,60 @@ async fn wrapped_main() {
        PROGRESS_BAR.join().unwrap();
    });

-    let (stats, tx_stats, stats_handle) = statistics::initialize();
+    // cloning an Arc is cheap (it's basically a pointer into the heap)
+    // so that will allow for cheap/safe sharing of a single wordlist across multi-target scans
+    // as well as additional directories found as part of recursion
+    let words = match get_unique_words_from_wordlist(&config.wordlist) {
+        Ok(w) => w,
+        Err(err) => {
+            let secondary = Path::new(SECONDARY_WORDLIST);

-    if !CONFIGURATION.time_limit.is_empty() {
+            if secondary.exists() {
+                eprintln!("Found wordlist in secondary location");
+                get_unique_words_from_wordlist(SECONDARY_WORDLIST)?
+            } else {
+                return Err(err);
+            }
+        }
+    };
+
+    if words.len() <= 1 {
+        // the check is now <= 1 due to the initial empty string added in 2.6.0
+        // 1 -> empty wordlist
+        // 0 -> error
+        bail!("Did not find any words in {}", config.wordlist);
+    }
+
+    // spawn all event handlers, expect back a JoinHandle and a *Handle to the specific event
+    let (stats_task, stats_handle) = StatsHandler::initialize(config.clone());
+    let (filters_task, filters_handle) = FiltersHandler::initialize();
+    let (out_task, out_handle) =
+        TermOutHandler::initialize(config.clone(), stats_handle.tx.clone());
+
+    // bundle up all the disparate handles and JoinHandles (tasks)
+    let handles = Arc::new(Handles::new(
+        stats_handle,
+        filters_handle,
+        out_handle,
+        config.clone(),
+        words,
+    ));
+
+    let (scan_task, scan_handle) = ScanHandler::initialize(handles.clone());
+
+    handles.set_scan_handle(scan_handle); // must be done after Handles initialization
+    handles.output.send(AddHandles(handles.clone()))?;
+
+    filters::initialize(handles.clone()).await?; // send user-supplied filters to the handler
+
+    // create new Tasks object, each of these handles is one that will be joined on later
+    let tasks = Tasks::new(out_task, stats_task, filters_task, scan_task);
+
+    if !config.time_limit.is_empty() {
        // --time-limit value not an empty string, need to kick off the thread that enforces
        // the limit
-
-        let max_time_stats = stats.clone();
-
-        tokio::spawn(async move {
-            scan_manager::start_max_time_thread(&CONFIGURATION.time_limit, max_time_stats).await
-        });
+        let time_handles = handles.clone();
+        tokio::spawn(async move { scan_manager::start_max_time_thread(time_handles).await });
    }

    // can't trace main until after logger is initialized and the above task is started
@@ -281,170 +269,239 @@ async fn wrapped_main() {
    // spawn a thread that listens for keyboard input on stdin, when a user presses enter
    // the input handler will toggle PAUSE_SCAN, which in turn is used to pause and resume
    // scans that are already running
-    tokio::task::spawn_blocking(terminal_input_handler);
+    // also starts ctrl+c handler
+    TermInputHandler::initialize(handles.clone());

-    let save_output = !CONFIGURATION.output.is_empty(); // was -o used?
+    if config.resumed {
+        let scanned_urls = handles.ferox_scans()?;
+        let from_here = config.resume_from.clone();

-    if CONFIGURATION.save_state {
-        // start the ctrl+c handler
-        scan_manager::initialize(stats.clone());
+        // populate FeroxScans object with previously seen scans
+        scanned_urls.add_serialized_scans(&from_here, handles.clone())?;
+
+        // populate Stats object with previously known statistics
+        handles.stats.send(LoadStats(from_here))?;
    }

-    let (tx_term, tx_file, term_handle, file_handle) =
-        reporter::initialize(&CONFIGURATION.output, save_output, tx_stats.clone());
-
    // get targets from command line or stdin
-    let targets = match get_targets().await {
+    let targets = match get_targets(handles.clone()).await {
        Ok(t) => t,
        Err(e) => {
            // should only happen in the event that there was an error reading from stdin
-            log::error!("{} {}", module_colorizer("main::get_targets"), e);
-            clean_up(
-                tx_term,
-                term_handle,
-                tx_file,
-                file_handle,
-                tx_stats,
-                stats_handle,
-                save_output,
-            )
-            .await;
-            return;
+            clean_up(handles, tasks).await?;
+            bail!("Could not determine initial targets: {}", e);
        }
    };

-    update_stat!(tx_stats, UpdateUsizeField(InitialTargets, targets.len()));
+    // --parallel branch
+    if config.parallel > 0 {
+        log::trace!("enter: parallel branch");

-    if !CONFIGURATION.quiet {
-        // only print banner if -q isn't used
+        PARALLEL_LIMITER.add_permits(config.parallel);
+
+        let invocation = args();
+
+        let para_regex =
+            Regex::new("--stdin|-q|--quiet|--silent|--verbosity|-v|-vv|-vvv|-vvvv").unwrap();
+
+        // remove stdin since only the original process will process targets
+        // remove quiet and silent so we can force silent later to normalize output
+        let mut original = invocation
+            .filter(|s| !para_regex.is_match(s))
+            .collect::<Vec<String>>();
+
+        original.push("--silent".to_string()); // only output modifier allowed
+
+        // we need remove --parallel from command line so we don't hit this branch over and over
+        // but we must remove --parallel N manually; the filter above never sees --parallel and the
+        // value passed to it at the same time, so can't filter them out in one pass
+
+        // unwrap is fine, as it has to be in the args for us to be in this code branch
+        let parallel_index = original.iter().position(|s| *s == "--parallel").unwrap();
+
+        // remove --parallel
+        original.remove(parallel_index);
+
+        // remove N passed to --parallel (it's the same index again since everything shifts
+        // from removing --parallel)
+        original.remove(parallel_index);
+
+        // to log unique files to a shared folder, we need to first check for the presence
+        // of -o|--output.
+        let out_dir = if !config.output.is_empty() {
+            // -o|--output was used, so we'll attempt to create a directory to store the files
+            let output_path = Path::new(&handles.config.output);
+
+            // this only returns None if the path terminates in `..`. Since I don't want to
+            // hand-hold to that degree, we'll unwrap and fail if the output path ends in `..`
+            let base_name = output_path.file_name().unwrap();
+
+            let new_folder = slugify_filename(&base_name.to_string_lossy(), "", "logs");
+
+            let final_path = output_path.with_file_name(new_folder);
+
+            // create the directory or fail silently, assuming the reason for failure is that
+            // the path exists already
+            create_dir(&final_path).unwrap_or(());
+
+            final_path.to_string_lossy().to_string()
+        } else {
+            String::new()
+        };
+
+        // unvalidated targets fresh from stdin, just spawn children and let them do all checks
+        for target in targets {
+            // add the current target to the provided command
+            let mut cloned = original.clone();
+
+            if !out_dir.is_empty() {
+                // output directory value is not empty, need to join output directory with
+                // unique scan filename
+
+                // unwrap is ok, we already know -o was used
+                let out_idx = original
+                    .iter()
+                    .position(|s| *s == "--output" || *s == "-o")
+                    .unwrap();
+
+                let filename = slugify_filename(&target, "ferox", "log");
+
+                let full_path = Path::new(&out_dir)
+                    .join(filename)
+                    .to_string_lossy()
+                    .to_string();
+
+                // a +1 to the index is fine here, as clap has already validated that
+                // -o|--output has a value associated with it
+                cloned[out_idx + 1] = full_path;
+            }
+
+            cloned.push("-u".to_string());
+            cloned.push(target);
+
+            let bin = cloned.index(0).to_owned(); // user's path to feroxbuster
+            let args = cloned.index(1..).to_vec(); // and args
+
+            let permit = PARALLEL_LIMITER.acquire().await?;
+
+            log::debug!("parallel exec: {} {}", bin, args.join(" "));
+
+            tokio::task::spawn_blocking(move || {
+                let result = Command::new(bin)
+                    .args(&args)
+                    .spawn()
+                    .expect("failed to spawn a child process")
+                    .wait()
+                    .expect("child process errored during execution");
+
+                drop(permit);
+                result
+            });
+        }
+
+        // the output handler creates an empty file to which it will try to write, because
+        // this happens before we enter the --parallel branch, we need to remove that file
+        // if it's empty
+        let output = handles.config.output.to_owned();
+
+        clean_up(handles, tasks).await?;
+
+        let file = Path::new(&output);
+        if file.exists() {
+            // expectation is that this is always true for the first ferox process
+            if file.metadata()?.len() == 0 {
+                // empty file, attempt to remove it
+                remove_file(file)?;
+            }
+        }
+
+        log::trace!("exit: parallel branch && wrapped main");
+        return Ok(());
+    }
+
+    if matches!(config.output_level, OutputLevel::Default) {
+        // only print banner if output level is default (no banner on --quiet|--silent)
        let std_stderr = stderr(); // std::io::stderr
-        banner::initialize(
-            &targets,
-            &CONFIGURATION,
-            &VERSION,
-            std_stderr,
-            tx_stats.clone(),
-        )
-        .await;
+
+        let mut banner = Banner::new(&targets, &config);
+
+        // only interested in the side-effect that sets banner.update_status
+        let _ = banner.check_for_updates(UPDATE_URL, handles.clone()).await;
+
+        if banner.print_to(std_stderr, config.clone()).is_err() {
+            clean_up(handles, tasks).await?;
+            bail!(fmt_err("Could not print banner"));
+        }
+    }
+
+    {
+        let send_to_file = !config.output.is_empty();
+
+        // The TermOutHandler spawns a FileOutHandler, so errors in the FileOutHandler never bubble
+        // up due to the TermOutHandler never awaiting the result of FileOutHandler::start (that's
+        // done later here in main). sync checks that the tx/rx connection to the file handler works
+        if send_to_file && handles.output.sync(send_to_file).await.is_err() {
+            // output file specified and file handler could not initialize
+            clean_up(handles, tasks).await?;
+            let msg = format!("Couldn't start {} file handler", config.output);
+            bail!(fmt_err(&msg));
+        }
    }

    // discard non-responsive targets
-    let live_targets = heuristics::connectivity_test(&targets, tx_stats.clone()).await;
+    let live_targets = {
+        let test = heuristics::HeuristicTests::new(handles.clone());
+        let result = test.connectivity(&targets).await;
+        if result.is_err() {
+            clean_up(handles, tasks).await?;
+            bail!(fmt_err(&result.unwrap_err().to_string()));
+        }
+        result?
+    };

    if live_targets.is_empty() {
-        clean_up(
-            tx_term,
-            term_handle,
-            tx_file,
-            file_handle,
-            tx_stats,
-            stats_handle,
-            save_output,
-        )
-        .await;
-        return;
+        clean_up(handles, tasks).await?;
+        bail!(fmt_err("Could not find any live targets to scan"));
    }

    // kick off a scan against any targets determined to be responsive
-    match scan(
-        live_targets,
-        stats,
-        tx_term.clone(),
-        tx_file.clone(),
-        tx_stats.clone(),
-    )
-    .await
-    {
-        Ok(_) => {
-            log::info!("All scans complete!");
-        }
+    match scan(live_targets, handles.clone()).await {
+        Ok(_) => {}
        Err(e) => {
-            ferox_print(
-                &format!("{} while scanning: {}", status_colorizer("Error"), e),
-                &PROGRESS_PRINTER,
-            );
-            clean_up(
-                tx_term,
-                term_handle,
-                tx_file,
-                file_handle,
-                tx_stats,
-                stats_handle,
-                save_output,
-            )
-            .await;
-            process::exit(1);
+            clean_up(handles, tasks).await?;
+            bail!(fmt_err(&format!("Failed while scanning: {}", e)));
        }
-    };
+    }

-    clean_up(
-        tx_term,
-        term_handle,
-        tx_file,
-        file_handle,
-        tx_stats,
-        stats_handle,
-        save_output,
-    )
-    .await;
+    clean_up(handles, tasks).await?;

    log::trace!("exit: wrapped_main");
+    Ok(())
 }

 /// Single cleanup function that handles all the necessary drops/finishes etc required to gracefully
 /// shutdown the program
-async fn clean_up(
-    tx_term: UnboundedSender<FeroxResponse>,
-    term_handle: JoinHandle<()>,
-    tx_file: UnboundedSender<FeroxResponse>,
-    file_handle: Option<JoinHandle<()>>,
-    tx_stats: UnboundedSender<StatCommand>,
-    stats_handle: JoinHandle<()>,
-    save_output: bool,
-) {
-    log::trace!(
-        "enter: clean_up({:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {})",
-        tx_term,
-        term_handle,
-        tx_file,
-        file_handle,
-        tx_stats,
-        stats_handle,
-        save_output
-    );
-    drop(tx_term);
-    log::trace!("dropped terminal output handler's transmitter");
+async fn clean_up(handles: Arc<Handles>, tasks: Tasks) -> Result<()> {
+    log::trace!("enter: clean_up({:?}, {:?})", handles, tasks);

-    log::trace!("awaiting terminal output handler's receiver");
-    // after dropping tx, we can await the future where rx lived
-    match term_handle.await {
-        Ok(_) => {}
-        Err(e) => {
-            log::error!("error awaiting terminal output handler's receiver: {}", e);
-        }
-    }
-    log::trace!("done awaiting terminal output handler's receiver");
+    let (tx, rx) = oneshot::channel::<bool>();
+    handles.send_scan_command(JoinTasks(tx))?;
+    rx.await?;

-    log::trace!("tx_file: {:?}", tx_file);
-    // the same drop/await process used on the terminal handler is repeated for the file handler
-    // we drop the file transmitter every time, because it's created no matter what
-    drop(tx_file);
+    log::info!("All scans complete!");

-    log::trace!("dropped file output handler's transmitter");
-    if save_output {
-        // but we only await if -o was specified
-        log::trace!("awaiting file output handler's receiver");
-        match file_handle.unwrap().await {
-            Ok(_) => {}
-            Err(e) => {
-                log::error!("error awaiting file output handler's receiver: {}", e);
-            }
-        }
-        log::trace!("done awaiting file output handler's receiver");
-    }
+    // terminal handler closes file handler if one is in use
+    handles.output.send(Exit)?;
+    tasks.terminal.await??;
+    log::trace!("terminal handler closed");

-    update_stat!(tx_stats, StatCommand::Exit); // send exit command and await the end of the future
-    stats_handle.await.unwrap_or_default();
+    handles.filters.send(Exit)?;
+    tasks.filters.await??;
+    log::trace!("filters handler closed");
+
+    handles.stats.send(Exit)?;
+    tasks.stats.await??;
+    log::trace!("stats handler closed");

    // mark all scans complete so the terminal input handler will exit cleanly
    SCAN_COMPLETE.store(true, Ordering::Relaxed);
@@ -453,14 +510,21 @@ async fn clean_up(
    // the final trace messages above
    PROGRESS_PRINTER.finish();

-    drop(tx_stats);
-
    log::trace!("exit: clean_up");
+    Ok(())
 }

-fn main() {
+fn main() -> Result<()> {
+    let config = Arc::new(Configuration::new().with_context(|| "Could not create Configuration")?);
+
    // setup logging based on the number of -v's used
-    logger::initialize(CONFIGURATION.verbosity);
+    if matches!(
+        config.output_level,
+        OutputLevel::Default | OutputLevel::Quiet
+    ) {
+        // don't log on --silent
+        logger::initialize(config.clone())?;
+    }

    // this function uses rlimit, which is not supported on windows
    #[cfg(not(target_os = "windows"))]
@@ -470,9 +534,43 @@ fn main() {
        .enable_all()
        .build()
    {
-        let future = wrapped_main();
-        runtime.block_on(future);
+        let future = wrapped_main(config.clone());
+        if let Err(e) = runtime.block_on(future) {
+            eprintln!("{}", e);
+
+            // the code below is to facilitate testing tests/test_banner entries. Since it's an
+            // integration test, normal test detection (cfg!(test), etc...) won't work. So, in
+            // the tests themselves, we pass
+            // `--wordlist /definitely/doesnt/exist/0cd7fed0-47f4-4b18-a1b0-ac39708c1676`
+            // and look for that here to print the banner.
+            //
+            // this change became a necessity once we moved wordlist parsing out of `scan` and into
+            // `wrapped_main`.
+            if e.to_string()
+                .contains("/definitely/doesnt/exist/0cd7fed0-47f4-4b18-a1b0-ac39708c1676")
+            {
+                // support the handful of tests that use `--stdin`
+                let targets: Vec<_> = if config.stdin {
+                    stdin().lock().lines().map(|tgt| tgt.unwrap()).collect()
+                } else {
+                    vec!["http://localhost".to_string()]
+                };
+
+                // print the banner to stderr
+                let std_stderr = stderr(); // std::io::stderr
+                let banner = Banner::new(&targets, &config);
+                if !config.quiet && !config.silent {
+                    banner.print_to(std_stderr, config).unwrap();
+                }
+            }
+
+            // if we've encountered an error before clean_up can be called (i.e. a wordlist error)
+            // we need to at least spin-down the progress bar
+            PROGRESS_PRINTER.finish();
+        };
    }

    log::trace!("exit: main");
+
+    Ok(())
 }
--- a/src/message.rs
+++ b/src/message.rs
@@ -0,0 +1,148 @@
+use anyhow::Context;
+use console::{style, Color};
+use serde::{Deserialize, Serialize};
+
+use crate::traits::FeroxSerialize;
+use crate::utils::fmt_err;
+
+#[derive(Serialize, Deserialize, Default, Debug)]
+/// Representation of a log entry, can be represented as a human readable string or JSON
+pub struct FeroxMessage {
+    #[serde(rename = "type")]
+    /// Name of this type of struct, used for serialization, i.e. `{"type":"log"}`
+    pub(crate) kind: String,
+
+    /// The log message
+    pub(crate) message: String,
+
+    /// The log level
+    pub(crate) level: String,
+
+    /// The number of seconds elapsed since the scan started
+    pub(crate) time_offset: f32,
+
+    /// The module from which log::* was called
+    pub(crate) module: String,
+}
+
+/// Implementation of FeroxMessage
+impl FeroxSerialize for FeroxMessage {
+    /// Create a string representation of the log message
+    ///
+    /// ex:  301       10l       16w      173c https://localhost/api
+    fn as_str(&self) -> String {
+        let (level_name, level_color) = match self.level.as_str() {
+            "ERROR" => ("ERR", Color::Red),
+            "WARN" => ("WRN", Color::Red),
+            "INFO" => ("INF", Color::Cyan),
+            "DEBUG" => ("DBG", Color::Yellow),
+            "TRACE" => ("TRC", Color::Magenta),
+            "WILDCARD" => ("WLD", Color::Cyan),
+            _ => ("MSG", Color::White),
+        };
+
+        format!(
+            "{} {:10.03} {} {}\n",
+            style(level_name).bg(level_color).black(),
+            style(self.time_offset).dim(),
+            self.module,
+            style(&self.message).dim(),
+        )
+    }
+
+    /// Create an NDJSON representation of the log message
+    ///
+    /// (expanded for clarity)
+    /// ex:
+    /// {
+    ///   "type": "log",
+    ///   "message": "Sent https://localhost/api to file handler",
+    ///   "level": "DEBUG",
+    ///   "time_offset": 0.86333454,
+    ///   "module": "feroxbuster::reporter"
+    /// }\n
+    fn as_json(&self) -> anyhow::Result<String> {
+        let mut json = serde_json::to_string(&self).with_context(|| {
+            fmt_err(&format!(
+                "Could not convert {}:{} to JSON",
+                self.level, self.message
+            ))
+        })?;
+        json.push('\n');
+        Ok(json)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    /// test as_str method of FeroxMessage
+    fn ferox_message_as_str_returns_string_with_newline() {
+        let message = FeroxMessage {
+            message: "message".to_string(),
+            module: "utils".to_string(),
+            time_offset: 1.0,
+            level: "INFO".to_string(),
+            kind: "log".to_string(),
+        };
+        let message_str = message.as_str();
+
+        assert!(message_str.contains("INF"));
+        assert!(message_str.contains("1.000"));
+        assert!(message_str.contains("utils"));
+        assert!(message_str.contains("message"));
+        assert!(message_str.ends_with('\n'));
+    }
+
+    #[test]
+    /// test as_json method of FeroxMessage
+    fn ferox_message_as_json_returns_json_representation_of_ferox_message_with_newline() {
+        let message = FeroxMessage {
+            message: "message".to_string(),
+            module: "utils".to_string(),
+            time_offset: 1.0,
+            level: "INFO".to_string(),
+            kind: "log".to_string(),
+        };
+
+        let message_str = message.as_json().unwrap();
+
+        let error_margin = f32::EPSILON;
+
+        let json: FeroxMessage = serde_json::from_str(&message_str).unwrap();
+        assert_eq!(json.module, message.module);
+        assert_eq!(json.message, message.message);
+        assert!((json.time_offset - message.time_offset).abs() < error_margin);
+        assert_eq!(json.level, message.level);
+        assert_eq!(json.kind, message.kind);
+    }
+
+    #[test]
+    /// test defaults for coverage
+    fn message_defaults() {
+        let msg = FeroxMessage::default();
+        assert_eq!(msg.level, String::new());
+        assert_eq!(msg.kind, String::new());
+        assert_eq!(msg.message, String::new());
+        assert_eq!(msg.module, String::new());
+        assert!(msg.time_offset < 0.1);
+    }
+
+    #[test]
+    /// ensure WILDCARD messages serialize to WLD and anything not known to UNK
+    fn message_as_str_edges() {
+        let mut msg = FeroxMessage {
+            message: "message".to_string(),
+            module: "utils".to_string(),
+            time_offset: 1.0,
+            level: "WILDCARD".to_string(),
+            kind: "log".to_string(),
+        };
+        assert!(console::strip_ansi_codes(&msg.as_str()).starts_with("WLD"));
+
+        msg.level = "UNKNOWN".to_string();
+        assert!(console::strip_ansi_codes(&msg.as_str()).starts_with("MSG"));
+    }
+}
--- a/src/nlp/constants.rs
+++ b/src/nlp/constants.rs
@@ -0,0 +1,334 @@
+use lazy_static::lazy_static;
+use regex::Regex;
+
+lazy_static! {
+    /// regular expression to match on words with numbers, underscores, and hyphens
+    pub(super) static ref BOUNDED_WORD_REGEX: Regex = Regex::new(r"\b[a-zA-Z0-9_-]+\b").unwrap();
+}
+
+/// collection of stop words from spaCy with small modifications
+pub(super) static STOP_WORDS: [&str; 323] = [
+    "'d",
+    "'ll",
+    "'m",
+    "'re",
+    "'s",
+    "'ve",
+    "a",
+    "about",
+    "above",
+    "across",
+    "after",
+    "afterwards",
+    "again",
+    "against",
+    "almost",
+    "alone",
+    "along",
+    "already",
+    "also",
+    "although",
+    "always",
+    "am",
+    "among",
+    "amongst",
+    "amount",
+    "an",
+    "and",
+    "another",
+    "any",
+    "anyhow",
+    "anyone",
+    "anything",
+    "anyway",
+    "anywhere",
+    "are",
+    "around",
+    "as",
+    "at",
+    "back",
+    "be",
+    "became",
+    "because",
+    "become",
+    "becomes",
+    "becoming",
+    "been",
+    "before",
+    "beforehand",
+    "behind",
+    "being",
+    "below",
+    "beside",
+    "besides",
+    "between",
+    "beyond",
+    "both",
+    "bottom",
+    "but",
+    "by",
+    "ca",
+    "call",
+    "can",
+    "cannot",
+    "could",
+    "did",
+    "do",
+    "does",
+    "doing",
+    "done",
+    "down",
+    "due",
+    "during",
+    "each",
+    "eight",
+    "either",
+    "eleven",
+    "else",
+    "elsewhere",
+    "empty",
+    "enough",
+    "even",
+    "ever",
+    "every",
+    "everyone",
+    "everything",
+    "everywhere",
+    "except",
+    "few",
+    "fifteen",
+    "fifty",
+    "first",
+    "five",
+    "for",
+    "former",
+    "formerly",
+    "forty",
+    "four",
+    "from",
+    "front",
+    "full",
+    "further",
+    "get",
+    "got",
+    "give",
+    "go",
+    "had",
+    "has",
+    "have",
+    "he",
+    "hence",
+    "her",
+    "here",
+    "hereafter",
+    "hereby",
+    "herein",
+    "hereupon",
+    "hers",
+    "herself",
+    "him",
+    "himself",
+    "his",
+    "how",
+    "however",
+    "hundred",
+    "i",
+    "if",
+    "in",
+    "indeed",
+    "into",
+    "is",
+    "it",
+    "its",
+    "itself",
+    "just",
+    "keep",
+    "last",
+    "latter",
+    "latterly",
+    "least",
+    "less",
+    "made",
+    "make",
+    "many",
+    "may",
+    "me",
+    "meanwhile",
+    "might",
+    "mine",
+    "more",
+    "moreover",
+    "most",
+    "mostly",
+    "move",
+    "much",
+    "must",
+    "my",
+    "myself",
+    "n't",
+    "name",
+    "namely",
+    "neither",
+    "never",
+    "nevertheless",
+    "next",
+    "nine",
+    "no",
+    "nobody",
+    "none",
+    "noone",
+    "nor",
+    "not",
+    "nothing",
+    "now",
+    "nowhere",
+    "n\u{2018}t",
+    "n\u{2019}t",
+    "of",
+    "off",
+    "often",
+    "on",
+    "once",
+    "one",
+    "only",
+    "onto",
+    "or",
+    "other",
+    "others",
+    "otherwise",
+    "our",
+    "ours",
+    "ourselves",
+    "out",
+    "over",
+    "own",
+    "part",
+    "per",
+    "perhaps",
+    "please",
+    "put",
+    "quite",
+    "rather",
+    "re",
+    "really",
+    "regarding",
+    "same",
+    "say",
+    "see",
+    "seem",
+    "seemed",
+    "seeming",
+    "seems",
+    "serious",
+    "several",
+    "she",
+    "should",
+    "side",
+    "since",
+    "six",
+    "sixty",
+    "so",
+    "some",
+    "somehow",
+    "someone",
+    "something",
+    "sometime",
+    "sometimes",
+    "somewhere",
+    "still",
+    "such",
+    "take",
+    "ten",
+    "than",
+    "that",
+    "the",
+    "their",
+    "them",
+    "themselves",
+    "then",
+    "thence",
+    "there",
+    "thereafter",
+    "thereby",
+    "therefore",
+    "therein",
+    "thereupon",
+    "these",
+    "they",
+    "third",
+    "this",
+    "those",
+    "though",
+    "three",
+    "through",
+    "throughout",
+    "thru",
+    "thus",
+    "to",
+    "together",
+    "too",
+    "toward",
+    "towards",
+    "twelve",
+    "twenty",
+    "two",
+    "under",
+    "unless",
+    "until",
+    "up",
+    "upon",
+    "used",
+    "using",
+    "various",
+    "very",
+    "via",
+    "was",
+    "we",
+    "well",
+    "were",
+    "what",
+    "whatever",
+    "when",
+    "whence",
+    "whenever",
+    "where",
+    "whereafter",
+    "whereas",
+    "whereby",
+    "wherein",
+    "whereupon",
+    "wherever",
+    "whether",
+    "which",
+    "while",
+    "whither",
+    "who",
+    "whoever",
+    "whole",
+    "whom",
+    "whose",
+    "why",
+    "will",
+    "with",
+    "within",
+    "without",
+    "would",
+    "yet",
+    "you",
+    "your",
+    "yours",
+    "yourself",
+    "yourselves",
+    "\u{2018}d",
+    "\u{2018}ll",
+    "\u{2018}m",
+    "\u{2018}re",
+    "\u{2018}s",
+    "\u{2018}ve",
+    "\u{2019}d",
+    "\u{2019}ll",
+    "\u{2019}m",
+    "\u{2019}re",
+    "\u{2019}s",
+    "\u{2019}ve",
+];
--- a/src/nlp/document.rs
+++ b/src/nlp/document.rs
@@ -0,0 +1,223 @@
+use super::term::{Term, TermMetaData};
+use super::utils::preprocess;
+use scraper::{Html, Node, Selector};
+use std::collections::HashMap;
+
+/// data container representing a single document, in the nlp sense
+#[derive(Debug, Default)]
+pub(crate) struct Document {
+    /// collection of `Term`s and their associated metadata
+    terms: HashMap<Term, TermMetaData>,
+
+    /// number of terms contained within the document
+    number_of_terms: usize,
+}
+
+impl Document {
+    /// create a new `Document` from the given string
+    pub(super) fn new(text: &str) -> Self {
+        let mut document = Self::default();
+
+        let processed = preprocess(text);
+
+        document.number_of_terms += processed.len();
+
+        for normalized in processed {
+            if normalized.len() >= 2 {
+                document.add_term(&normalized)
+            }
+        }
+        document
+    }
+
+    /// add a `Term` to the document if it's not already tracked, otherwise increment the number
+    /// of times the term has been seen
+    fn add_term(&mut self, word: &str) {
+        let term = Term::new(word);
+
+        let metadata = self.terms.entry(term).or_insert_with(TermMetaData::new);
+        *metadata.count_mut() += 1;
+    }
+
+    /// create a new `Document` from the given HTML string
+    pub(crate) fn from_html(raw_html: &str) -> Self {
+        let selector = Selector::parse("body").unwrap();
+
+        let html = Html::parse_document(raw_html);
+
+        let text = html
+            .select(&selector)
+            .next()
+            .unwrap()
+            .descendants()
+            .filter_map(|node| {
+                if !node.value().is_text() && !node.value().is_comment() {
+                    return None;
+                }
+
+                // have a Text||Comment node, trim whitespace to test for all whitespace stuff
+                let trimmed = if node.value().is_text() {
+                    node.value().as_text().unwrap().text.trim()
+                } else {
+                    node.value().as_comment().unwrap().comment.trim()
+                };
+
+                if trimmed.is_empty() {
+                    return None;
+                }
+
+                // found a non-empty Text||Comment node, need to check its parent to determine if
+                // it's a <script>||<style> tag. We're assuming text within a script||style tag is
+                // uninteresting
+
+                let parent = node.parent().unwrap().value();
+
+                if !parent.is_element() {
+                    return None;
+                }
+
+                // parent is an Element node, see if it's a <script> or <style>
+
+                if let Node::Element(element) = parent {
+                    if element.name() == "script" || element.name() == "style" {
+                        return None;
+                    }
+
+                    // at this point, we have a non-empty Text element with a non-script|style parent;
+                    // now we can return the trimmed up string
+                    return Some(format!("{} ", trimmed));
+                }
+
+                // not an Element node
+                None
+            })
+            .collect::<String>();
+
+        // call `new` to push the parsed html through the pre-processing pipeline and process all
+        // the words
+        Self::new(&text)
+    }
+
+    /// Log normalized weighting scheme for term frequency
+    pub(super) fn term_frequency(&self, term: &Term) -> f32 {
+        if let Some(metadata) = self.terms.get(term) {
+            metadata.count() as f32 / self.number_of_terms() as f32
+        } else {
+            0.0
+        }
+    }
+
+    /// immutable reference to the collection of terms and their metadata
+    pub(super) fn terms(&self) -> &HashMap<Term, TermMetaData> {
+        &self.terms
+    }
+
+    /// number of terms the current document knows about
+    fn number_of_terms(&self) -> usize {
+        self.number_of_terms
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    /// `Document::new` should preprocess text and generate a hashmap of `Term, TermMetadata`
+    fn nlp_document_creation_from_text() {
+        let doc = Document::new("The air quality in Singapore got worse on Wednesday.");
+
+        let expected_terms = ["air", "quality", "singapore", "worse", "wednesday"];
+
+        for expected in expected_terms {
+            let term = Term::new(expected);
+            assert!(doc.terms().contains_key(&term));
+            assert_eq!(doc.number_of_terms, 5);
+            assert_eq!(doc.terms().get(&term).unwrap().count(), 1);
+
+            // since term frequencies aren't calculated on `new`, document frequency is zero in
+            // addition to the empty term_frequencies slice
+            let empty: &[f32] = &[];
+            assert_eq!(doc.terms().get(&term).unwrap().term_frequencies(), empty);
+            assert_eq!(doc.terms().get(&term).unwrap().document_frequency(), 0);
+        }
+    }
+
+    #[test]
+    /// `Document::new` should preprocess html and generate a hashmap of `Term, TermMetadata`
+    fn nlp_document_creation_from_html() {
+        let empty = Document::from_html("<html></html>");
+        assert_eq!(empty.number_of_terms, 0);
+
+        let other_empty = Document::from_html("<html><body><p></p></body></html>");
+        assert_eq!(other_empty.number_of_terms, 0);
+
+        let third_empty = Document::from_html("<!DOCTYPE html><html><!DOCTYPE html><p></p></html>");
+        assert_eq!(third_empty.number_of_terms, 0);
+
+        // p tag for is_text check and comment for is_comment
+        let doc = Document::from_html(
+            "<html><body><p>The air quality in Singapore.</p><!--got worse on Wednesday--></body></html>",
+        );
+
+        let expected_terms = ["air", "quality", "singapore", "worse", "wednesday"];
+
+        for expected in expected_terms {
+            let term = Term::new(expected);
+            assert_eq!(doc.number_of_terms, 5);
+            assert!(doc.terms().contains_key(&term));
+            assert_eq!(doc.terms().get(&term).unwrap().count(), 1);
+
+            // since term frequencies aren't calculated on `new`, document frequency is zero in
+            // addition to the empty term_frequencies slice
+            let empty: &[f32] = &[];
+            assert_eq!(doc.terms().get(&term).unwrap().term_frequencies(), empty);
+            assert_eq!(doc.terms().get(&term).unwrap().document_frequency(), 0);
+        }
+    }
+
+    #[test]
+    /// simple check of the `term_frequency` function's return value
+    fn term_frequency_validation() {
+        let doc = Document::new("The air quality in Singapore got worse on Wednesday. Air Jordan.");
+
+        let air_freq = doc.term_frequency(&Term::new("air"));
+
+        let abs_diff = (air_freq - 0.2857143).abs();
+        assert!(abs_diff <= f32::EPSILON);
+
+        let non_existent = doc.term_frequency(&Term::new("derpatronic"));
+        assert_eq!(non_existent, 0.0);
+    }
+
+    #[test]
+    /// test accessors for correctness
+    fn document_accessor_test() {
+        let doc = Document::new("The air quality in Singapore got worse on Wednesday.");
+        let keys = doc.terms().keys().map(|key| key.raw()).collect::<Vec<_>>();
+
+        let expected = ["air", "quality", "singapore", "worse", "wednesday"];
+
+        assert_eq!(doc.number_of_terms(), 5);
+
+        for key in keys {
+            assert!(expected.contains(&key));
+        }
+    }
+
+    #[test]
+    /// ensure words in script/style tags aren't processed
+    fn document_creation_skips_script_and_style_tags() {
+        let html = "<body><script>The air quality</script><style>in Singapore</style><p>got worse on Wednesday.</p></body>";
+        let doc = Document::from_html(html);
+        let keys = doc.terms().keys().map(|key| key.raw()).collect::<Vec<_>>();
+
+        let expected = ["worse", "wednesday"];
+
+        assert_eq!(doc.number_of_terms(), 2);
+
+        for key in keys {
+            assert!(expected.contains(&key));
+        }
+    }
+}
--- a/src/nlp/mod.rs
+++ b/src/nlp/mod.rs
@@ -0,0 +1,10 @@
+//! small stand-alone tf-idf library, specifically designed for use in feroxbuster
+
+mod constants;
+mod document;
+mod model;
+mod term;
+mod utils;
+
+pub(crate) use self::document::Document;
+pub(crate) use self::model::TfIdf;
--- a/src/nlp/model.rs
+++ b/src/nlp/model.rs
@@ -0,0 +1,185 @@
+use super::document::Document;
+use super::term::{Term, TermMetaData};
+use super::utils::{inverse_document_frequency, tf_idf_score};
+use std::borrow::{Borrow, BorrowMut};
+use std::collections::HashMap;
+
+/// data container for the TF-IDF model
+#[derive(Debug, Default)]
+pub(crate) struct TfIdf {
+    /// collection of `Term`s and their associated metadata
+    terms: HashMap<Term, TermMetaData>,
+
+    /// number of documents processed by the model
+    num_documents: usize,
+}
+
+impl TfIdf {
+    /// create an empty TF-IDF model; must be populated with `add_document` prior to use
+    pub(crate) fn new() -> Self {
+        Self::default()
+    }
+
+    /// accessor method for the collection of `Term`s and `TermMetaData`
+    fn terms(&self) -> &HashMap<Term, TermMetaData> {
+        self.terms.borrow()
+    }
+
+    /// accessor method for the number of `Document`s the model has processed
+    pub(crate) fn num_documents(&self) -> usize {
+        self.num_documents
+    }
+
+    /// add a `Document` to the model
+    pub(crate) fn add_document(&mut self, document: Document) {
+        // increment number of docs seen, since we don't preserve the document itself; this needs
+        // to happen before calls to `self.inverse_document_frequency`, as it relies on the count
+        // being up to date
+        self.num_documents += 1;
+
+        for (term, doc_metadata) in document.terms().iter() {
+            // an incoming `Term` from a `Document` only has a valid `count` for that particular
+            // document; need to get the term frequency while both are known/valid
+            let term_frequency = document.term_frequency(term);
+
+            let metadata = self
+                .terms
+                .entry(term.clone())
+                .or_insert_with(|| doc_metadata.to_owned());
+
+            metadata.term_frequencies_mut().push(term_frequency);
+        }
+    }
+
+    /// (re)-calculate tf-idf scores for all terms, given the current number of documents
+    ///
+    /// # Notes
+    ///
+    /// old tf-idf scores are removed during calculations to keep new `Term`s at the same relative
+    /// level as new ones WRT corpus size
+    pub(crate) fn calculate_tf_idf_scores(&mut self) {
+        for metadata in self.terms.borrow_mut().values_mut() {
+            let num_frequencies = metadata.term_frequencies().len();
+
+            let mut to_add = Vec::with_capacity(num_frequencies);
+
+            for frequency in metadata.term_frequencies() {
+                let idf = inverse_document_frequency(
+                    self.num_documents as f32,
+                    metadata.document_frequency() as f32,
+                );
+
+                let score = tf_idf_score(*frequency, idf);
+                to_add.push(score);
+            }
+
+            let average: f32 = to_add.iter().sum::<f32>() / to_add.len() as f32;
+
+            *metadata.tf_idf_score_mut() = average;
+        }
+    }
+
+    /// select all terms with a non-zero tf-idf score
+    pub(crate) fn all_words(&self) -> Vec<String> {
+        self.terms()
+            .iter()
+            .filter(|(_, metadata)| metadata.tf_idf_score() > 0.0)
+            .map(|(term, _)| term.raw().to_owned())
+            .collect()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// helper for this test suite
+    fn get_score(word: &str, model: &TfIdf) -> f32 {
+        model.terms().get(&Term::new(word)).unwrap().tf_idf_score()
+    }
+
+    #[test]
+    /// given the example data at https://remykarem.github.io/tfidf-demo/, ensure the model
+    /// produces the same results
+    fn model_generates_expected_tf_idf_scores() {
+        let one = "Air quality in the sunny island improved gradually throughout Wednesday.";
+        let two =
+            "Air quality in Singapore on Wednesday continued to get worse as haze hit the island.";
+        let three = "The air quality in Singapore is monitored through a network of air monitoring stations located in different parts of the island";
+        let four = "The air quality in Singapore got worse on Wednesday.";
+
+        let docs = [one, two, three, four];
+        let mut model = TfIdf::new();
+
+        for doc in docs.iter() {
+            let d = Document::new(doc);
+            model.add_document(d);
+        }
+
+        assert_eq!(model.terms().len(), 19);
+
+        model.calculate_tf_idf_scores();
+
+        assert_eq!(get_score("quality", &model), 0.0);
+        assert_eq!(get_score("air", &model), 0.0);
+        assert_eq!(get_score("wednesday", &model), 0.018906077);
+        assert_eq!(get_score("island", &model), 0.014047348);
+        assert_eq!(get_score("singapore", &model), 0.016427131);
+        assert_eq!(get_score("sunny", &model), 0.08600858);
+        assert_eq!(get_score("monitoring", &model), 0.05017167);
+        assert_eq!(get_score("stations", &model), 0.05017167);
+        assert_eq!(get_score("parts", &model), 0.05017167);
+        assert_eq!(get_score("haze", &model), 0.06689556);
+        assert_eq!(get_score("hit", &model), 0.06689556);
+        assert_eq!(get_score("worse", &model), 0.04682689);
+    }
+
+    #[test]
+    /// given the example data at https://remykarem.github.io/tfidf-demo/, ensure the model
+    /// produces the same results
+    fn select_n_words_grabs_correct_words() {
+        let one = "Air quality in the sunny island improved gradually throughout Wednesday.";
+        let two =
+            "Air quality in Singapore on Wednesday continued to get worse as haze hit the island.";
+        let three = "The air quality in Singapore is monitored through a network of air monitoring stations located in different parts of the island";
+        let four = "The air quality in Singapore got worse on Wednesday.";
+
+        let docs = [one, two, three, four];
+        let mut model = TfIdf::new();
+
+        for doc in docs.iter() {
+            let d = Document::new(doc);
+            model.add_document(d);
+        }
+
+        assert_eq!(model.num_documents(), 4);
+
+        model.calculate_tf_idf_scores();
+
+        let non_zero_words = model.all_words();
+
+        [
+            "gradually",
+            "network",
+            "hit",
+            "located",
+            "continued",
+            "island",
+            "worse",
+            "monitored",
+            "monitoring",
+            "haze",
+            "different",
+            "stations",
+            "sunny",
+            "singapore",
+            "improved",
+            "parts",
+            "wednesday",
+        ]
+        .iter()
+        .for_each(|word| {
+            assert!(non_zero_words.contains(&word.to_string()));
+        });
+    }
+}
--- a/src/nlp/term.rs
+++ b/src/nlp/term.rs
@@ -0,0 +1,105 @@
+use std::borrow::BorrowMut;
+
+/// single word term for text processing
+#[derive(Debug, Hash, Eq, PartialEq, Default, Clone)]
+pub(crate) struct Term {
+    /// underlying string that the term represents
+    raw: String,
+}
+
+impl Term {
+    /// given a word, create a new `Term`
+    pub(super) fn new(word: &str) -> Self {
+        Self {
+            raw: word.to_owned(),
+        }
+    }
+
+    /// return a reference to the underlying string
+    pub(super) fn raw(&self) -> &str {
+        &self.raw
+    }
+}
+
+/// metadata to be associated with a `Term`
+#[derive(Debug, Clone, Default)]
+pub(super) struct TermMetaData {
+    /// number of times the associated `Term` was seen in a single document
+    count: u32,
+
+    /// collection of term frequencies for the associated `Term`
+    term_frequencies: Vec<f32>,
+
+    /// tf-idf score for the associated `Term`
+    tf_idf_score: f32,
+}
+
+impl TermMetaData {
+    /// create a new metadata container
+    pub(super) fn new() -> Self {
+        Self::default()
+    }
+
+    /// number of times a `Term` has appeared in any `Document` within the corpus
+    pub(super) fn document_frequency(&self) -> usize {
+        self.term_frequencies().len()
+    }
+
+    /// mutable reference to the collection of term frequencies
+    pub(super) fn term_frequencies_mut(&mut self) -> &mut Vec<f32> {
+        self.term_frequencies.borrow_mut()
+    }
+
+    /// immutable reference to the collection of term frequencies
+    pub(super) fn term_frequencies(&self) -> &[f32] {
+        &self.term_frequencies
+    }
+
+    /// mutable reference to the number of times a `Term` was seen in a particular `Document`
+    pub(super) fn count_mut(&mut self) -> &mut u32 {
+        self.count.borrow_mut()
+    }
+
+    /// number of times a `Term` was seen in a particular `Document`
+    pub(super) fn count(&self) -> u32 {
+        self.count
+    }
+
+    /// mutable reference to the term's tf-idf score
+    pub(super) fn tf_idf_score_mut(&mut self) -> &mut f32 {
+        self.tf_idf_score.borrow_mut()
+    }
+
+    /// immutable reference to the term's tf-idf score
+    pub(super) fn tf_idf_score(&self) -> f32 {
+        self.tf_idf_score
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    /// test accessors for correctness
+    fn nlp_term_accessor_test() {
+        let term = Term::new("stuff");
+        assert_eq!(term.raw(), "stuff");
+    }
+
+    #[test]
+    /// test accessors for correctness
+    fn nlp_term_metadata_accessor_test() {
+        let mut metadata = TermMetaData::new();
+
+        *metadata.count_mut() += 1;
+        assert_eq!(metadata.count(), 1);
+
+        metadata.term_frequencies_mut().push(1.0);
+        assert_eq!(metadata.document_frequency(), 1);
+        assert_eq!(metadata.term_frequencies().first().unwrap(), &1.0);
+
+        *metadata.tf_idf_score_mut() = 1.0_f32;
+        assert_eq!(metadata.tf_idf_score(), 1.0);
+    }
+}
--- a/src/nlp/utils.rs
+++ b/src/nlp/utils.rs
@@ -0,0 +1,158 @@
+use super::constants::{BOUNDED_WORD_REGEX, STOP_WORDS};
+use regex::Captures;
+use std::borrow::Cow;
+
+/// pre-processing pipeline wrapper that removes punctuation, normalizes word case (utf-8 included)
+/// to lowercase, and remove stop words
+pub(super) fn preprocess(text: &str) -> Vec<String> {
+    let text = remove_punctuation(text);
+    let text = normalize_case(text);
+    let text = remove_stop_words(&text);
+
+    text.split_whitespace()
+        .map(|word| word.to_string())
+        .collect::<Vec<_>>()
+}
+
+/// optimized version of `str::to_lowercase`
+fn normalize_case<'a, S: Into<Cow<'a, str>>>(input: S) -> Cow<'a, str> {
+    let input = input.into();
+
+    let first = input.find(char::is_uppercase);
+
+    if let Some(first_idx) = first {
+        let mut output = String::from(&input[..first_idx]);
+        output.reserve(input.len() - first_idx);
+
+        for c in input[first_idx..].chars() {
+            if c.is_uppercase() {
+                output.push(c.to_lowercase().next().unwrap())
+            } else {
+                output.push(c)
+            }
+        }
+
+        Cow::Owned(output)
+    } else {
+        input
+    }
+}
+
+/// replace ascii and some utf-8 punctuation characters with ' ' (space) in the given string
+fn remove_punctuation(text: &str) -> String {
+    text.replace(
+        [
+            '!', '\\', '"', '#', '$', '%', '&', '(', ')', '*', '+', ':', ';', '<', '=', '>', '?',
+            '@', '[', ']', '^', '{', '}', '|', '~', ',', '\'', '“', '”', '’', '‘', '’', '‘', '/',
+            '–', '—', '.',
+        ],
+        " ",
+    )
+}
+
+/// remove stop words from the given string
+fn remove_stop_words(text: &str) -> String {
+    BOUNDED_WORD_REGEX
+        .replace_all(text, |caps: &Captures| {
+            let word = &caps[0];
+            if !STOP_WORDS.contains(&word) {
+                word.to_owned()
+            } else {
+                String::new()
+            }
+        })
+        .into()
+}
+
+/// calculate inverse document frequency
+pub(super) fn inverse_document_frequency(num_docs: f32, doc_frequency: f32) -> f32 {
+    f32::log10(num_docs / doc_frequency)
+}
+
+/// calculate term frequency-inverse document frequency (tf-idf)
+pub(super) fn tf_idf_score(term_frequency: f32, idf: f32) -> f32 {
+    term_frequency * idf
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    /// ensure all expected punctuation characters are removed
+    fn test_remove_punctuation() {
+        let tester = "!\\\"#$%&()*+/:;<=>?@[]^{}|~,.'“”’‘–—\n‘’";
+        // the `"    \n"` is because of the things like / getting replaced with a space
+        assert_eq!(
+            remove_punctuation(tester),
+            "                                   \n  "
+        );
+    }
+
+    #[test]
+    /// ensure uppercase characters are swapped to lowercase
+    fn test_normalize_case() {
+        let tester = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        assert_eq!(normalize_case(tester), "abcdefghijklmnopqrstuvwxyz");
+    }
+
+    #[test]
+    /// ensure all stop words are removed from the list of stopwords ... intestuous
+    fn test_remove_stopwords() {
+        let all_words = STOP_WORDS
+            .iter()
+            .map(|&word| word.to_string())
+            .collect::<Vec<_>>()
+            .join(" ");
+
+        let removed = remove_stop_words(&all_words).replace(' ', "");
+
+        // the remaining chars are from the contraction-based stop words
+        assert_eq!(removed, "'d'll'm''s'ven'tn‘tn’t‘d‘ll‘m‘‘s‘ve’d’ll’m’’s’ve");
+    }
+
+    #[test]
+    /// ensure preprocess
+    fn test_preprocess_results() {
+        let tester = "WHY are Y'all YELLing?";
+        assert_eq!(&preprocess(tester), &["y", "all", "yelling"]);
+    }
+
+    #[test]
+    /// ensure our calculations conform to the example provided at the link below
+    ///
+    /// https://www.kaggle.com/paulrohan2020/tf-idf-tutorial/notebook#TF-IDF-Model
+    ///
+    /// Consider a document containing 100 words wherein the word cat appears 3 times.
+    /// The term frequency (i.e., tf) for cat is then (3 / 100) = 0.03. Now, assume we have 10
+    /// million documents and the word cat appears in one thousand of these. Then, the inverse
+    /// document frequency (i.e., idf) is calculated as log(10,000,000 / 1,000) = 4. Thus, the
+    /// Tf-idf weight is the product of these quantities: 0.03 * 4 = 0.12.
+    fn idf_returns_expected_value() {
+        let num_docs = 10_000_000_f32;
+        let num_occurrences = 1_000_f32;
+        let abs_diff = (inverse_document_frequency(num_docs, num_occurrences) - 4.0).abs();
+
+        assert!(abs_diff <= f32::EPSILON);
+    }
+
+    #[test]
+    /// ensure our calculations conform to the example provided at the link below
+    ///
+    /// https://www.kaggle.com/paulrohan2020/tf-idf-tutorial/notebook#TF-IDF-Model
+    ///
+    /// Consider a document containing 100 words wherein the word cat appears 3 times.
+    /// The term frequency (i.e., tf) for cat is then (3 / 100) = 0.03. Now, assume we have 10
+    /// million documents and the word cat appears in one thousand of these. Then, the inverse
+    /// document frequency (i.e., idf) is calculated as log(10,000,000 / 1,000) = 4. Thus, the
+    /// Tf-idf weight is the product of these quantities: 0.03 * 4 = 0.12.
+    fn tf_idf_returns_expected_value() {
+        let term_freq = 0.03_f32;
+        let num_docs = 10_000_000_f32;
+        let num_occurrences = 1_000_f32;
+        let idf = inverse_document_frequency(num_docs, num_occurrences);
+        let abs_diff = (tf_idf_score(term_freq, idf) - 0.12).abs();
+
+        assert!(abs_diff <= f32::EPSILON);
+    }
+}
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1,6 +1,11 @@
-use clap::{App, Arg, ArgGroup};
+use clap::ArgAction;
+use clap::{
+    crate_authors, crate_description, crate_name, crate_version, Arg, ArgGroup, Command, ValueHint,
+};
 use lazy_static::lazy_static;
 use regex::Regex;
+use std::env;
+use std::process;

 lazy_static! {
    /// Regex used to validate values passed to --time-limit
@@ -12,334 +17,635 @@ lazy_static! {
    /// - 1d
    pub static ref TIMESPEC_REGEX: Regex =
        Regex::new(r"^(?i)(?P<n>\d+)(?P<m>[smdh])$").expect("Could not compile regex");
+
+    /// help string for user agent, your guess is as good as mine as to why this is required...
+    static ref DEFAULT_USER_AGENT: String = format!(
+        "Sets the User-Agent (default: feroxbuster/{})",
+        crate_version!()
+    );
 }

 /// Create and return an instance of [clap::App](https://docs.rs/clap/latest/clap/struct.App.html), i.e. the Command Line Interface's configuration
-pub fn initialize() -> App<'static, 'static> {
-    App::new("feroxbuster")
-        .version(env!("CARGO_PKG_VERSION"))
-        .author("Ben 'epi' Risher (@epi052)")
-        .about("A fast, simple, recursive content discovery tool written in Rust")
+pub fn initialize() -> Command {
+    let app = Command::new(crate_name!())
+        .version(crate_version!())
+        .author(crate_authors!())
+        .about(crate_description!());
+
+    /////////////////////////////////////////////////////////////////////
+    // group - target selection
+    /////////////////////////////////////////////////////////////////////
+    let app = app
        .arg(
-            Arg::with_name("wordlist")
-                .short("w")
-                .long("wordlist")
-                .value_name("FILE")
-                .help("Path to the wordlist")
-                .takes_value(true),
-        )
-        .arg(
-            Arg::with_name("url")
-                .short("u")
+            Arg::new("url")
+                .short('u')
                .long("url")
-                .required_unless_one(&["stdin", "resume_from"])
+                .required_unless_present_any(["stdin", "resume_from"])
+                .help_heading("Target selection")
                .value_name("URL")
-                .multiple(true)
-                .use_delimiter(true)
-                .help("The target URL(s) (required, unless --stdin used)"),
+                .use_value_delimiter(true)
+                .value_hint(ValueHint::Url)
+                .help("The target URL (required, unless [--stdin || --resume-from] used)"),
        )
        .arg(
-            Arg::with_name("threads")
-                .short("t")
-                .long("threads")
-                .value_name("THREADS")
-                .takes_value(true)
-                .help("Number of concurrent threads (default: 50)"),
+            Arg::new("stdin")
+                .long("stdin")
+                .help_heading("Target selection")
+                .num_args(0)
+                .help("Read url(s) from STDIN")
+                .conflicts_with("url")
        )
        .arg(
-            Arg::with_name("depth")
-                .short("d")
-                .long("depth")
-                .value_name("RECURSION_DEPTH")
-                .takes_value(true)
-                .help("Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)"),
+            Arg::new("resume_from")
+                .long("resume-from")
+                .value_hint(ValueHint::FilePath)
+                .value_name("STATE_FILE")
+                .help_heading("Target selection")
+                .help("State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)")
+                .conflicts_with("url")
+                .num_args(1),
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - composite settings
+    /////////////////////////////////////////////////////////////////////
+    let app = app
+        .arg(
+            Arg::new("burp")
+                .long("burp")
+                .num_args(0)
+                .help_heading("Composite settings")
+                .conflicts_with_all(["proxy", "insecure", "burp_replay"])
+                .help("Set --proxy to http://127.0.0.1:8080 and set --insecure to true"),
        )
        .arg(
-            Arg::with_name("timeout")
-                .short("T")
-                .long("timeout")
-                .value_name("SECONDS")
-                .takes_value(true)
-                .help("Number of seconds before a request times out (default: 7)"),
+            Arg::new("burp_replay")
+                .long("burp-replay")
+                .num_args(0)
+                .help_heading("Composite settings")
+                .conflicts_with_all(["replay_proxy", "insecure"])
+                .help("Set --replay-proxy to http://127.0.0.1:8080 and set --insecure to true"),
        )
        .arg(
-            Arg::with_name("verbosity")
-                .short("v")
-                .long("verbosity")
-                .takes_value(false)
-                .multiple(true)
-                .help("Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v's is probably too much)"),
-        )
+            Arg::new("smart")
+                .long("smart")
+                .num_args(0)
+                .help_heading("Composite settings")
+                .help("Set --extract-links, --auto-tune, --collect-words, and --collect-backups to true"),
+        ).arg(
+            Arg::new("thorough")
+                .long("thorough")
+                .num_args(0)
+                .help_heading("Composite settings")
+                .help("Use the same settings as --smart and set --collect-extensions to true"),
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - proxy settings
+    /////////////////////////////////////////////////////////////////////
+    let app = app
        .arg(
-            Arg::with_name("proxy")
-                .short("p")
+            Arg::new("proxy")
+                .short('p')
                .long("proxy")
-                .takes_value(true)
+                .num_args(1)
                .value_name("PROXY")
+                .value_hint(ValueHint::Url)
+                .help_heading("Proxy settings")
                .help(
                    "Proxy to use for requests (ex: http(s)://host:port, socks5(h)://host:port)",
                ),
        )
        .arg(
-            Arg::with_name("replay_proxy")
-                .short("P")
+            Arg::new("replay_proxy")
+                .short('P')
                .long("replay-proxy")
-                .takes_value(true)
+                .num_args(1)
+                .value_hint(ValueHint::Url)
                .value_name("REPLAY_PROXY")
+                .help_heading("Proxy settings")
                .help(
                    "Send only unfiltered requests through a Replay Proxy, instead of all requests",
                ),
        )
        .arg(
-            Arg::with_name("replay_codes")
-                .short("R")
+            Arg::new("replay_codes")
+                .short('R')
                .long("replay-codes")
                .value_name("REPLAY_CODE")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
                .requires("replay_proxy")
+                .help_heading("Proxy settings")
                .help(
                    "Status Codes to send through a Replay Proxy when found (default: --status-codes value)",
                ),
-        )
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - request settings
+    /////////////////////////////////////////////////////////////////////
+    let app = app
        .arg(
-            Arg::with_name("status_codes")
-                .short("s")
-                .long("status-codes")
-                .value_name("STATUS_CODE")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
-                .help(
-                    "Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)",
-                ),
-        )
-        .arg(
-            Arg::with_name("quiet")
-                .short("q")
-                .long("quiet")
-                .takes_value(false)
-                .help("Only print URLs; Don't print status codes, response size, running config, etc...")
-        )
-        .arg(
-            Arg::with_name("json")
-                .long("json")
-                .takes_value(false)
-                .requires("output_files")
-                .help("Emit JSON logs to --output and --debug-log instead of normal text")
-        )
-        .arg(
-            Arg::with_name("dont_filter")
-                .short("D")
-                .long("dont-filter")
-                .takes_value(false)
-                .help("Don't auto-filter wildcard responses")
-        )
-        .arg(
-            Arg::with_name("output")
-                .short("o")
-                .long("output")
-                .value_name("FILE")
-                .help("Output file to write results to (use w/ --json for JSON entries)")
-                .takes_value(true),
-        )
-        .arg(
-            Arg::with_name("resume_from")
-                .long("resume-from")
-                .value_name("STATE_FILE")
-                .help("State file from which to resume a partially complete scan (ex. --resume-from ferox-1606586780.state)")
-                .conflicts_with("url")
-                .takes_value(true),
-        )
-        .arg(
-            Arg::with_name("debug_log")
-                .long("debug-log")
-                .value_name("FILE")
-                .help("Output file to write log entries (use w/ --json for JSON entries)")
-                .takes_value(true),
-        )
-        .arg(
-            Arg::with_name("user_agent")
-                .short("a")
+            Arg::new("user_agent")
+                .short('a')
                .long("user-agent")
                .value_name("USER_AGENT")
-                .takes_value(true)
-                .help(
-                    "Sets the User-Agent (default: feroxbuster/VERSION)"
-                ),
+                .num_args(1)
+                .help_heading("Request settings")
+                .help(&**DEFAULT_USER_AGENT),
        )
        .arg(
-            Arg::with_name("redirects")
-                .short("r")
-                .long("redirects")
-                .takes_value(false)
-                .help("Follow redirects")
+            Arg::new("random_agent")
+                .short('A')
+                .long("random-agent")
+                .num_args(0)
+                .help_heading("Request settings")
+                .help("Use a random User-Agent"),
        )
        .arg(
-            Arg::with_name("insecure")
-                .short("k")
-                .long("insecure")
-                .takes_value(false)
-                .help("Disables TLS certificate validation")
-        )
-        .arg(
-            Arg::with_name("extensions")
-                .short("x")
+            Arg::new("extensions")
+                .short('x')
                .long("extensions")
                .value_name("FILE_EXTENSION")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Request settings")
                .help(
                    "File extension(s) to search for (ex: -x php -x pdf js)",
                ),
        )
        .arg(
-            Arg::with_name("headers")
-                .short("H")
+            Arg::new("methods")
+                .short('m')
+                .long("methods")
+                .value_name("HTTP_METHODS")
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Request settings")
+                .help(
+                    "Which HTTP request method(s) should be sent (default: GET)",
+                ),
+        )
+        .arg(
+            Arg::new("data")
+                .long("data")
+                .value_name("DATA")
+                .num_args(1)
+                .help_heading("Request settings")
+                .help(
+                    "Request's Body; can read data from a file if input starts with an @ (ex: @post.bin)",
+                ),
+        )
+        .arg(
+            Arg::new("headers")
+                .short('H')
                .long("headers")
                .value_name("HEADER")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .help_heading("Request settings")
+                .use_value_delimiter(true)
                .help(
-                    "Specify HTTP headers (ex: -H Header:val 'stuff: things')",
+                    "Specify HTTP headers to be used in each request (ex: -H Header:val -H 'stuff: things')",
                ),
        )
        .arg(
-            Arg::with_name("queries")
-                .short("Q")
+            Arg::new("cookies")
+                .short('b')
+                .long("cookies")
+                .value_name("COOKIE")
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Request settings")
+                .help(
+                    "Specify HTTP cookies to be used in each request (ex: -b stuff=things)",
+                ),
+        )
+        .arg(
+            Arg::new("queries")
+                .short('Q')
                .long("query")
                .value_name("QUERY")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Request settings")
                .help(
-                    "Specify URL query parameters (ex: -Q token=stuff -Q secret=key)",
+                    "Request's URL query parameters (ex: -Q token=stuff -Q secret=key)",
                ),
        )
        .arg(
-            Arg::with_name("no_recursion")
-                .short("n")
-                .long("no-recursion")
-                .takes_value(false)
-                .help("Do not scan recursively")
-        )
-        .arg(
-            Arg::with_name("add_slash")
-                .short("f")
+            Arg::new("add_slash")
+                .short('f')
                .long("add-slash")
-                .takes_value(false)
-                .conflicts_with("extensions")
-                .help("Append / to each request")
-        )
+                .help_heading("Request settings")
+                .num_args(0)
+                .help("Append / to each request's URL")
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - request filters
+    /////////////////////////////////////////////////////////////////////
+    let app = app.arg(
+        Arg::new("url_denylist")
+            .long("dont-scan")
+            .value_name("URL")
+            .num_args(1..)
+            .action(ArgAction::Append)
+            .use_value_delimiter(true)
+            .help_heading("Request filters")
+            .help("URL(s) or Regex Pattern(s) to exclude from recursion/scans"),
+    );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - response filters
+    /////////////////////////////////////////////////////////////////////
+    let app = app
        .arg(
-            Arg::with_name("stdin")
-                .long("stdin")
-                .takes_value(false)
-                .help("Read url(s) from STDIN")
-                .conflicts_with("url")
-        )
-        .arg(
-            Arg::with_name("filter_size")
-                .short("S")
+            Arg::new("filter_size")
+                .short('S')
                .long("filter-size")
                .value_name("SIZE")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Response filters")
                .help(
                    "Filter out messages of a particular size (ex: -S 5120 -S 4927,1970)",
                ),
        )
        .arg(
-            Arg::with_name("filter_regex")
-                .short("X")
+            Arg::new("filter_regex")
+                .short('X')
                .long("filter-regex")
                .value_name("REGEX")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Response filters")
                .help(
                    "Filter out messages via regular expression matching on the response's body (ex: -X '^ignore me$')",
                ),
        )
        .arg(
-            Arg::with_name("filter_words")
-                .short("W")
+            Arg::new("filter_words")
+                .short('W')
                .long("filter-words")
                .value_name("WORDS")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Response filters")
                .help(
                    "Filter out messages of a particular word count (ex: -W 312 -W 91,82)",
                ),
        )
        .arg(
-            Arg::with_name("filter_lines")
-                .short("N")
+            Arg::new("filter_lines")
+                .short('N')
                .long("filter-lines")
                .value_name("LINES")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Response filters")
                .help(
                    "Filter out messages of a particular line count (ex: -N 20 -N 31,30)",
                ),
        )
        .arg(
-            Arg::with_name("filter_status")
-                .short("C")
+            Arg::new("filter_status")
+                .short('C')
                .long("filter-status")
                .value_name("STATUS_CODE")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .conflicts_with("status_codes")
+                .help_heading("Response filters")
                .help(
                    "Filter out status codes (deny list) (ex: -C 200 -C 401)",
                ),
        )
        .arg(
-            Arg::with_name("filter_similar")
+            Arg::new("filter_similar")
                .long("filter-similar-to")
                .value_name("UNWANTED_PAGE")
-                .takes_value(true)
-                .multiple(true)
-                .use_delimiter(true)
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .value_hint(ValueHint::Url)
+                .use_value_delimiter(true)
+                .help_heading("Response filters")
                .help(
                    "Filter out pages that are similar to the given page (ex. --filter-similar-to http://site.xyz/soft404)",
                ),
        )
        .arg(
-            Arg::with_name("extract_links")
-                .short("e")
-                .long("extract-links")
-                .takes_value(false)
-                .help("Extract links from response body (html, javascript, etc...); make new requests based on findings (default: false)")
+            Arg::new("status_codes")
+                .short('s')
+                .long("status-codes")
+                .value_name("STATUS_CODE")
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Response filters")
+                .help(
+                    "Status Codes to include (allow list) (default: 200 204 301 302 307 308 401 403 405)",
+                ),
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - client settings
+    /////////////////////////////////////////////////////////////////////
+    let app = app
+        .arg(
+            Arg::new("timeout")
+                .short('T')
+                .long("timeout")
+                .value_name("SECONDS")
+                .num_args(1)
+                .help_heading("Client settings")
+                .help("Number of seconds before a client's request times out (default: 7)"),
        )
        .arg(
-            Arg::with_name("scan_limit")
-                .short("L")
+            Arg::new("redirects")
+                .short('r')
+                .long("redirects")
+                .num_args(0)
+                .help_heading("Client settings")
+                .help("Allow client to follow redirects"),
+        )
+        .arg(
+            Arg::new("insecure")
+                .short('k')
+                .long("insecure")
+                .num_args(0)
+                .help_heading("Client settings")
+                .help("Disables TLS certificate validation in the client"),
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - scan settings
+    /////////////////////////////////////////////////////////////////////
+    let app = app
+        .arg(
+            Arg::new("threads")
+                .short('t')
+                .long("threads")
+                .value_name("THREADS")
+                .num_args(1)
+                .help_heading("Scan settings")
+                .help("Number of concurrent threads (default: 50)"),
+        )
+        .arg(
+            Arg::new("no_recursion")
+                .short('n')
+                .long("no-recursion")
+                .num_args(0)
+                .help_heading("Scan settings")
+                .help("Do not scan recursively"),
+        )
+        .arg(
+            Arg::new("depth")
+                .short('d')
+                .long("depth")
+                .value_name("RECURSION_DEPTH")
+                .num_args(1)
+                .help_heading("Scan settings")
+                .help("Maximum recursion depth, a depth of 0 is infinite recursion (default: 4)"),
+        ).arg(
+            Arg::new("force_recursion")
+                .long("force-recursion")
+                .num_args(0)
+                .conflicts_with("no_recursion")
+                .help_heading("Scan settings")
+                .help("Force recursion attempts on all 'found' endpoints (still respects recursion depth)"),
+        ).arg(
+            Arg::new("extract_links")
+                .short('e')
+                .long("extract-links")
+                .num_args(0)
+                .help_heading("Scan settings")
+                .help("Extract links from response body (html, javascript, etc...); make new requests based on findings")
+        )
+        .arg(
+            Arg::new("scan_limit")
+                .short('L')
                .long("scan-limit")
                .value_name("SCAN_LIMIT")
-                .takes_value(true)
+                .num_args(1)
+                .help_heading("Scan settings")
                .help("Limit total number of concurrent scans (default: 0, i.e. no limit)")
        )
        .arg(
-            Arg::with_name("time_limit")
+            Arg::new("parallel")
+                .long("parallel")
+                .value_name("PARALLEL_SCANS")
+                .num_args(1)
+                .requires("stdin")
+                .help_heading("Scan settings")
+                .help("Run parallel feroxbuster instances (one child process per url passed via stdin)")
+        )
+        .arg(
+            Arg::new("rate_limit")
+                .long("rate-limit")
+                .value_name("RATE_LIMIT")
+                .num_args(1)
+                .conflicts_with("auto_tune")
+                .help_heading("Scan settings")
+                .help("Limit number of requests per second (per directory) (default: 0, i.e. no limit)")
+        )
+        .arg(
+            Arg::new("time_limit")
                .long("time-limit")
                .value_name("TIME_SPEC")
-                .takes_value(true)
-                .validator(valid_time_spec)
+                .num_args(1)
+                .value_parser(valid_time_spec)
+                .help_heading("Scan settings")
                .help("Limit total run time of all scans (ex: --time-limit 10m)")
        )
-        .group(ArgGroup::with_name("output_files")
-            .args(&["debug_log", "output"])
-            .multiple(true)
+        .arg(
+            Arg::new("wordlist")
+                .short('w')
+                .long("wordlist")
+                .value_hint(ValueHint::FilePath)
+                .value_name("FILE")
+                .help("Path to the wordlist")
+                .help_heading("Scan settings")
+                .num_args(1),
+        ).arg(
+            Arg::new("auto_tune")
+                .long("auto-tune")
+                .num_args(0)
+                .conflicts_with("auto_bail")
+                .help_heading("Scan settings")
+                .help("Automatically lower scan rate when an excessive amount of errors are encountered")
        )
-        .after_help(r#"NOTE:
+        .arg(
+            Arg::new("auto_bail")
+                .long("auto-bail")
+                .num_args(0)
+                .help_heading("Scan settings")
+                .help("Automatically stop scanning when an excessive amount of errors are encountered")
+        ).arg(
+            Arg::new("dont_filter")
+                .short('D')
+                .long("dont-filter")
+                .num_args(0)
+                .help_heading("Scan settings")
+                .help("Don't auto-filter wildcard responses")
+        ).arg(
+            Arg::new("collect_extensions")
+                .short('E')
+                .long("collect-extensions")
+                .num_args(0)
+                .help_heading("Dynamic collection settings")
+                .help("Automatically discover extensions and add them to --extensions (unless they're in --dont-collect)")
+        ).arg(
+            Arg::new("collect_backups")
+                .short('B')
+                .long("collect-backups")
+                .num_args(0)
+                .help_heading("Dynamic collection settings")
+                .help("Automatically request likely backup extensions for \"found\" urls")
+        ).arg(
+            Arg::new("collect_words")
+                .short('g')
+                .long("collect-words")
+                .num_args(0)
+                .help_heading("Dynamic collection settings")
+                .help("Automatically discover important words from within responses and add them to the wordlist")
+        ).arg(
+            Arg::new("dont_collect")
+                .short('I')
+                .long("dont-collect")
+                .value_name("FILE_EXTENSION")
+                .num_args(1..)
+                .action(ArgAction::Append)
+                .use_value_delimiter(true)
+                .help_heading("Dynamic collection settings")
+                .help(
+                    "File extension(s) to Ignore while collecting extensions (only used with --collect-extensions)",
+                ),
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - output settings
+    /////////////////////////////////////////////////////////////////////
+    let app = app
+        .arg(
+            Arg::new("verbosity")
+                .short('v')
+                .long("verbosity")
+                .num_args(0)
+                .action(ArgAction::Count)
+                .conflicts_with("silent")
+                .help_heading("Output settings")
+                .help("Increase verbosity level (use -vv or more for greater effect. [CAUTION] 4 -v's is probably too much)"),
+        ).arg(
+            Arg::new("silent")
+                .long("silent")
+                .num_args(0)
+                .conflicts_with("quiet")
+                .help_heading("Output settings")
+                .help("Only print URLs + turn off logging (good for piping a list of urls to other commands)")
+        )
+        .arg(
+            Arg::new("quiet")
+                .short('q')
+                .long("quiet")
+                .num_args(0)
+                .help_heading("Output settings")
+                .help("Hide progress bars and banner (good for tmux windows w/ notifications)")
+        )
+
+        .arg(
+            Arg::new("json")
+                .long("json")
+                .num_args(0)
+                .requires("output_files")
+                .help_heading("Output settings")
+                .help("Emit JSON logs to --output and --debug-log instead of normal text")
+        ).arg(
+            Arg::new("output")
+                .short('o')
+                .long("output")
+                .value_hint(ValueHint::FilePath)
+                .value_name("FILE")
+                .help_heading("Output settings")
+                .help("Output file to write results to (use w/ --json for JSON entries)")
+                .num_args(1),
+        )
+        .arg(
+            Arg::new("debug_log")
+                .long("debug-log")
+                .value_name("FILE")
+                .value_hint(ValueHint::FilePath)
+                .help_heading("Output settings")
+                .help("Output file to write log entries (use w/ --json for JSON entries)")
+                .num_args(1),
+        )
+        .arg(
+            Arg::new("no_state")
+                .long("no-state")
+                .num_args(0)
+                .help_heading("Output settings")
+                .help("Disable state output file (*.state)")
+        );
+
+    /////////////////////////////////////////////////////////////////////
+    // group - miscellaneous
+    /////////////////////////////////////////////////////////////////////
+    let mut app = app
+        .group(
+            ArgGroup::new("output_files")
+                .args(["debug_log", "output"])
+                .multiple(true),
+        )
+        .after_long_help(EPILOGUE);
+
+    /////////////////////////////////////////////////////////////////////
+    // end parser
+    /////////////////////////////////////////////////////////////////////
+    for arg in env::args() {
+        // secure-77 noticed that when an incorrect flag/option is used, the short help message is printed
+        // which is fine, but if you add -h|--help, it still errors out on the bad flag/option,
+        // never showing the full help message. This code addresses that behavior
+        if arg == "--help" {
+            app.print_long_help().unwrap();
+            println!(); // just a newline to mirror original --help output
+            process::exit(0);
+        } else if arg == "-h" {
+            // same for -h, just shorter
+            app.print_help().unwrap();
+            println!();
+            process::exit(0);
+        }
+    }
+
+    app
+}
+
+/// Validate that a string is formatted as a number followed by s, m, h, or d (10d, 30s, etc...)
+fn valid_time_spec(time_spec: &str) -> Result<String, String> {
+    match TIMESPEC_REGEX.is_match(time_spec) {
+        true => Ok(time_spec.to_string()),
+        false => {
+            let msg = format!(
+                "Expected a non-negative, whole number followed by s, m, h, or d (case insensitive); received {}",
+                time_spec
+            );
+            Err(msg)
+        }
+    }
+}
+
+const EPILOGUE: &str = r#"NOTE:
    Options that take multiple values are very flexible.  Consider the following ways of specifying
    extensions:
        ./feroxbuster -u http://127.1 -x pdf -x js,html -x php txt json,docx
@@ -357,10 +663,10 @@ EXAMPLES:
        ./feroxbuster -u http://[::1] --no-recursion -vv

    Read urls from STDIN; pipe only resulting urls out to another tool
-        cat targets | ./feroxbuster --stdin --quiet -s 200 301 302 --redirects -x js | fff -s 200 -o js-files
+        cat targets | ./feroxbuster --stdin --silent -s 200 301 302 --redirects -x js | fff -s 200 -o js-files

    Proxy traffic through Burp
-        ./feroxbuster -u http://127.1 --insecure --proxy http://127.0.0.1:8080
+        ./feroxbuster -u http://127.1 --burp

    Proxy traffic through a SOCKS proxy
        ./feroxbuster -u http://127.1 --proxy socks5://127.0.0.1:9050
@@ -372,30 +678,28 @@ EXAMPLES:
        ./feroxbuster -u http://127.1 --extract-links

    Ludicrous speed... go!
-        ./feroxbuster -u http://127.1 -t 200
-    "#)
-}
-
-/// Validate that a string is formatted as a number followed by s, m, h, or d (10d, 30s, etc...)
-fn valid_time_spec(time_spec: String) -> Result<(), String> {
-    match TIMESPEC_REGEX.is_match(&time_spec) {
-        true => Ok(()),
-        false => {
-            let msg = format!(
-                "Expected a non-negative, whole number followed by s, m, h, or d (case insensitive); received {}",
-                time_spec
-            );
-            Err(msg)
-        }
-    }
-}
+        ./feroxbuster -u http://127.1 --threads 200
+        
+    Limit to a total of 60 active requests at any given time (threads * scan limit)
+        ./feroxbuster -u http://127.1 --threads 30 --scan-limit 2
+    
+    Send all 200/302 responses to a proxy (only proxy requests/responses you care about)
+        ./feroxbuster -u http://127.1 --replay-proxy http://localhost:8080 --replay-codes 200 302 --insecure
+        
+    Abort or reduce scan speed to individual directory scans when too many errors have occurred
+        ./feroxbuster -u http://127.1 --auto-bail
+        ./feroxbuster -u http://127.1 --auto-tune
+        
+    Examples and demonstrations of all features
+        https://epi052.github.io/feroxbuster-docs/docs/examples/
+    "#;

 #[cfg(test)]
 mod tests {
    use super::*;

    #[test]
-    /// initalize parser, expect a clap::App returned
+    /// initialize parser, expect a clap::App returned
    fn parser_initialize_gives_defaults() {
        let app = initialize();
        assert_eq!(app.get_name(), "feroxbuster");
@@ -408,29 +712,29 @@ mod tests {
    /// that i didn't hose up the regex.  Going to consolidate them into a single test
    fn validate_valid_time_spec_validation() {
        let float_rejected = "1.4m";
-        assert!(valid_time_spec(float_rejected.into()).is_err());
+        assert!(valid_time_spec(float_rejected).is_err());

        let negative_rejected = "-1m";
-        assert!(valid_time_spec(negative_rejected.into()).is_err());
+        assert!(valid_time_spec(negative_rejected).is_err());

        let only_number_rejected = "1";
-        assert!(valid_time_spec(only_number_rejected.into()).is_err());
+        assert!(valid_time_spec(only_number_rejected).is_err());

        let only_measurement_rejected = "m";
-        assert!(valid_time_spec(only_measurement_rejected.into()).is_err());
+        assert!(valid_time_spec(only_measurement_rejected).is_err());

        for accepted_measurement in &["s", "m", "h", "d", "S", "M", "H", "D"] {
            // all upper/lowercase should be good
-            assert!(valid_time_spec(format!("1{}", *accepted_measurement)).is_ok());
+            assert!(valid_time_spec(&format!("1{}", *accepted_measurement)).is_ok());
        }

        let leading_space_rejected = " 14m";
-        assert!(valid_time_spec(leading_space_rejected.into()).is_err());
+        assert!(valid_time_spec(leading_space_rejected).is_err());

        let trailing_space_rejected = "14m ";
-        assert!(valid_time_spec(trailing_space_rejected.into()).is_err());
+        assert!(valid_time_spec(trailing_space_rejected).is_err());

        let space_between_rejected = "1 4m";
-        assert!(valid_time_spec(space_between_rejected.into()).is_err());
+        assert!(valid_time_spec(space_between_rejected).is_err());
    }
 }
--- a/src/progress.rs
+++ b/src/progress.rs
@@ -1,7 +1,16 @@
-use crate::config::{CONFIGURATION, PROGRESS_BAR};
-use indicatif::{ProgressBar, ProgressStyle};
+use indicatif::{MultiProgress, ProgressBar, ProgressDrawTarget, ProgressStyle};
+use lazy_static::lazy_static;
+
+lazy_static! {
+    /// Global progress bar that houses other progress bars
+    pub static ref PROGRESS_BAR: MultiProgress = MultiProgress::with_draw_target(ProgressDrawTarget::stdout());
+
+    /// Global progress bar that is only used for printing messages that don't jack up other bars
+    pub static ref PROGRESS_PRINTER: ProgressBar = add_bar("", 0, BarType::Hidden);
+}

 /// Types of ProgressBars that can be added to `PROGRESS_BAR`
+#[derive(Copy, Clone)]
 pub enum BarType {
    /// no template used / not visible
    Hidden,
@@ -14,6 +23,9 @@ pub enum BarType {

    /// bar used to show overall scan metrics
    Total,
+
+    /// simpler output bar that shows only the directory being scanned (no updating info)
+    Quiet,
 }

 /// Add an [indicatif::ProgressBar](https://docs.rs/indicatif/latest/indicatif/struct.ProgressBar.html)
@@ -21,29 +33,26 @@ pub enum BarType {
 pub fn add_bar(prefix: &str, length: u64, bar_type: BarType) -> ProgressBar {
    let mut style = ProgressStyle::default_bar().progress_chars("#>-");

-    style = if CONFIGURATION.quiet {
-        style.template("")
-    } else {
-        match bar_type {
-            BarType::Hidden => style.template(""),
-            BarType::Default => style.template(
-                "[{bar:.cyan/blue}] - {elapsed:<4} {pos:>7}/{len:7} {per_sec:7} {prefix}",
-            ),
-            BarType::Message => style.template(&format!(
-                "[{{bar:.cyan/blue}}] - {{elapsed:<4}} {{pos:>7}}/{{len:7}} {:7} {{prefix}}",
-                "-"
-            )),
-            BarType::Total => {
-                style.template("[{bar:.yellow/blue}] - {elapsed:<4} {pos:>7}/{len:7} {eta:7} {msg}")
-            }
+    style = match bar_type {
+        BarType::Hidden => style.template(""),
+        BarType::Default => style.template(
+            "[{bar:.cyan/blue}] - {elapsed:<4} {pos:>7}/{len:7} {per_sec:7} {prefix} {msg}",
+        ),
+        BarType::Message => style.template(&format!(
+            "[{{bar:.cyan/blue}}] - {{elapsed:<4}} {{pos:>7}}/{{len:7}} {:7} {{prefix}} {{msg}}",
+            "-"
+        )),
+        BarType::Total => {
+            style.template("[{bar:.yellow/blue}] - {elapsed:<4} {pos:>7}/{len:7} {eta:7} {msg}")
        }
+        BarType::Quiet => style.template("Scanning: {prefix}"),
    };

    let progress_bar = PROGRESS_BAR.add(ProgressBar::new(length));

    progress_bar.set_style(style);

-    progress_bar.set_prefix(&prefix);
+    progress_bar.set_prefix(prefix);

    progress_bar
 }
--- a/src/reporter.rs
+++ b/src/reporter.rs
@@ -1,261 +0,0 @@
-use crate::{
-    config::{CONFIGURATION, PROGRESS_PRINTER},
-    scanner::RESPONSES,
-    statistics::{
-        StatCommand::{self, UpdateUsizeField},
-        StatField::ResourcesDiscovered,
-    },
-    utils::{ferox_print, make_request, open_file},
-    FeroxChannel, FeroxResponse, FeroxSerialize,
-};
-use console::strip_ansi_codes;
-use std::{
-    fs, io,
-    io::Write,
-    sync::{Arc, Once, RwLock},
-};
-use tokio::{
-    sync::mpsc::{self, UnboundedReceiver, UnboundedSender},
-    task::JoinHandle,
-};
-
-/// Singleton buffered file behind an Arc/RwLock; used for file writes from two locations:
-///     - [logger::initialize](../logger/fn.initialize.html) (specifically a closure on the global logger instance)
-///     - `reporter::spawn_file_handler`
-pub static mut LOCKED_FILE: Option<Arc<RwLock<io::BufWriter<fs::File>>>> = None;
-
-/// An initializer Once variable used to create `LOCKED_FILE`
-static INIT: Once = Once::new();
-
-// Accessing a `static mut` is unsafe much of the time, but if we do so
-// in a synchronized fashion (e.g., write once or read all) then we're
-// good to go!
-//
-// This function will only call `open_file` once, and will
-// otherwise always return the value returned from the first invocation.
-pub fn get_cached_file_handle(filename: &str) -> Option<Arc<RwLock<io::BufWriter<fs::File>>>> {
-    unsafe {
-        INIT.call_once(|| {
-            LOCKED_FILE = open_file(&filename);
-        });
-        LOCKED_FILE.clone()
-    }
-}
-
-/// Creates all required output handlers (terminal, file) and returns
-/// the transmitter sides of each mpsc along with each receiver's future's JoinHandle to be awaited
-///
-/// Any other module that needs to write a Response to stdout or output results to a file should
-/// be passed a clone of the appropriate returned transmitter
-pub fn initialize(
-    output_file: &str,
-    save_output: bool,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> (
-    UnboundedSender<FeroxResponse>,
-    UnboundedSender<FeroxResponse>,
-    JoinHandle<()>,
-    Option<JoinHandle<()>>,
-) {
-    log::trace!(
-        "enter: initialize({}, {}, {:?})",
-        output_file,
-        save_output,
-        tx_stats
-    );
-
-    let (tx_rpt, rx_rpt): FeroxChannel<FeroxResponse> = mpsc::unbounded_channel();
-    let (tx_file, rx_file): FeroxChannel<FeroxResponse> = mpsc::unbounded_channel();
-
-    let file_clone = tx_file.clone();
-    let stats_clone = tx_stats.clone();
-
-    let term_reporter = tokio::spawn(async move {
-        spawn_terminal_reporter(rx_rpt, file_clone, stats_clone, save_output).await
-    });
-
-    let file_reporter = if save_output {
-        // -o used, need to spawn the thread for writing to disk
-        let file_clone = output_file.to_string();
-        Some(tokio::spawn(async move {
-            spawn_file_reporter(rx_file, tx_stats, &file_clone).await
-        }))
-    } else {
-        None
-    };
-
-    log::trace!(
-        "exit: initialize -> ({:?}, {:?}, {:?}, {:?})",
-        tx_rpt,
-        tx_file,
-        term_reporter,
-        file_reporter
-    );
-    (tx_rpt, tx_file, term_reporter, file_reporter)
-}
-
-/// Spawn a single consumer task (sc side of mpsc)
-///
-/// The consumer simply receives responses and prints them if they meet the given
-/// reporting criteria
-async fn spawn_terminal_reporter(
-    mut resp_chan: UnboundedReceiver<FeroxResponse>,
-    file_chan: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-    save_output: bool,
-) {
-    log::trace!(
-        "enter: spawn_terminal_reporter({:?}, {:?}, {:?}, {})",
-        resp_chan,
-        file_chan,
-        tx_stats,
-        save_output
-    );
-
-    while let Some(mut resp) = resp_chan.recv().await {
-        log::trace!("received {} on reporting channel", resp.url());
-
-        let contains_sentry = CONFIGURATION.status_codes.contains(&resp.status().as_u16());
-        let unknown_sentry = !RESPONSES.contains(&resp); // !contains == unknown
-        let should_process_response = contains_sentry && unknown_sentry;
-
-        if should_process_response {
-            // print to stdout
-            ferox_print(&resp.as_str(), &PROGRESS_PRINTER);
-
-            update_stat!(tx_stats, UpdateUsizeField(ResourcesDiscovered, 1));
-
-            if save_output {
-                // -o used, need to send the report to be written out to disk
-                match file_chan.send(resp.clone()) {
-                    Ok(_) => {
-                        log::debug!("Sent {} to file handler", resp.url());
-                    }
-                    Err(e) => {
-                        log::error!("Could not send {} to file handler: {}", resp.url(), e);
-                    }
-                }
-            }
-        }
-        log::trace!("report complete: {}", resp.url());
-
-        if CONFIGURATION.replay_client.is_some() && should_process_response {
-            // replay proxy specified/client created and this response's status code is one that
-            // should be replayed
-            match make_request(
-                CONFIGURATION.replay_client.as_ref().unwrap(),
-                &resp.url(),
-                tx_stats.clone(),
-            )
-            .await
-            {
-                Ok(_) => {}
-                Err(e) => {
-                    log::error!("{}", e);
-                }
-            }
-        }
-
-        if should_process_response {
-            // add response to RESPONSES for serialization in case of ctrl+c
-            // placed all by its lonesome like this so that RESPONSES can take ownership
-            // of the FeroxResponse
-
-            // before ownership is transferred, there's no real reason to keep the body anymore
-            // so we can free that piece of data, reducing memory usage
-            resp.text = String::new();
-
-            RESPONSES.insert(resp);
-        }
-    }
-    log::trace!("exit: spawn_terminal_reporter");
-}
-
-/// Spawn a single consumer task (sc side of mpsc)
-///
-/// The consumer simply receives responses and writes them to the given output file if they meet
-/// the given reporting criteria
-async fn spawn_file_reporter(
-    mut report_channel: UnboundedReceiver<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-    output_file: &str,
-) {
-    let buffered_file = match get_cached_file_handle(&CONFIGURATION.output) {
-        Some(file) => file,
-        None => {
-            log::trace!("exit: spawn_file_reporter");
-            return;
-        }
-    };
-
-    log::trace!(
-        "enter: spawn_file_reporter({:?}, {})",
-        report_channel,
-        output_file
-    );
-
-    log::info!("Writing scan results to {}", output_file);
-
-    while let Some(response) = report_channel.recv().await {
-        safe_file_write(&response, buffered_file.clone(), CONFIGURATION.json);
-    }
-
-    update_stat!(tx_stats, StatCommand::Save);
-
-    log::trace!("exit: spawn_file_reporter");
-}
-
-/// Given a string and a reference to a locked buffered file, write the contents and flush
-/// the buffer to disk.
-pub fn safe_file_write<T>(
-    value: &T,
-    locked_file: Arc<RwLock<io::BufWriter<fs::File>>>,
-    convert_to_json: bool,
-) where
-    T: FeroxSerialize,
-{
-    // note to future self: adding logging of anything other than error to this function
-    // is a bad idea. we call this function while processing records generated by the logger.
-    // If we then call log::... while already processing some logging output, it results in
-    // the second log entry being injected into the first.
-
-    let contents = if convert_to_json {
-        value.as_json()
-    } else {
-        value.as_str()
-    };
-
-    let contents = strip_ansi_codes(&contents);
-
-    if let Ok(mut handle) = locked_file.write() {
-        // write lock acquired
-        match handle.write(contents.as_bytes()) {
-            Ok(_) => {}
-            Err(e) => {
-                log::error!("could not write report to disk: {}", e);
-            }
-        }
-
-        match handle.flush() {
-            // this function is used within async functions/loops, so i'm flushing so that in
-            // the event of a ctrl+c or w/e results seen so far are saved instead of left lying
-            // around in the buffer
-            Ok(_) => {}
-            Err(e) => {
-                log::error!("error writing to file: {}", e);
-            }
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    #[should_panic]
-    /// asserts that an empty string for a filename returns None
-    fn reporter_get_cached_file_handle_without_filename_returns_none() {
-        let _used = get_cached_file_handle(&"").unwrap();
-    }
-}
--- a/src/response.rs
+++ b/src/response.rs
@@ -0,0 +1,796 @@
+use std::{
+    collections::HashMap,
+    convert::{TryFrom, TryInto},
+    fmt,
+    str::FromStr,
+    sync::Arc,
+};
+
+use anyhow::{Context, Result};
+use console::style;
+use reqwest::{
+    header::{HeaderMap, HeaderName, HeaderValue},
+    Method, Response, StatusCode, Url,
+};
+use serde::ser::SerializeStruct;
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+use serde_json::Value;
+
+use crate::{
+    config::OutputLevel,
+    event_handlers::{Command, Handles},
+    traits::FeroxSerialize,
+    url::FeroxUrl,
+    utils::{self, fmt_err, status_colorizer},
+    CommandSender,
+};
+
+/// A `FeroxResponse`, derived from a `Response` to a submitted `Request`
+#[derive(Debug, Clone)]
+pub struct FeroxResponse {
+    /// The final `Url` of this `FeroxResponse`
+    url: Url,
+
+    /// The original url from which the final `Url` was derived
+    original_url: String,
+
+    /// The `StatusCode` of this `FeroxResponse`
+    status: StatusCode,
+
+    /// The HTTP Request `Method` of this `FeroxResponse`
+    method: Method,
+
+    /// The full response text
+    text: String,
+
+    /// The content-length of this response, if known
+    content_length: u64,
+
+    /// The number of lines contained in the body of this response, if known
+    line_count: usize,
+
+    /// The number of words contained in the body of this response, if known
+    word_count: usize,
+
+    /// The `Headers` of this `FeroxResponse`
+    headers: HeaderMap,
+
+    /// Wildcard response status
+    wildcard: bool,
+
+    /// whether the user passed --quiet|--silent on the command line
+    pub(crate) output_level: OutputLevel,
+
+    /// Url's file extension, if one exists
+    pub(crate) extension: Option<String>,
+}
+
+/// implement Default trait for FeroxResponse
+impl Default for FeroxResponse {
+    /// return a default reqwest::Url and then normal defaults after that
+    fn default() -> Self {
+        Self {
+            url: Url::parse("http://localhost").unwrap(),
+            original_url: "".to_string(),
+            status: Default::default(),
+            method: Method::default(),
+            text: "".to_string(),
+            content_length: 0,
+            line_count: 0,
+            word_count: 0,
+            headers: Default::default(),
+            wildcard: false,
+            output_level: Default::default(),
+            extension: None,
+        }
+    }
+}
+
+/// Implement Display for FeroxResponse
+impl fmt::Display for FeroxResponse {
+    /// formatter for Display
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "FeroxResponse {{ url: {}, method: {}, status: {}, content-length: {} }}",
+            self.url(),
+            self.method(),
+            self.status(),
+            self.content_length()
+        )
+    }
+}
+
+/// `FeroxResponse` implementation
+impl FeroxResponse {
+    /// Get the `StatusCode` of this `FeroxResponse`
+    pub fn status(&self) -> &StatusCode {
+        &self.status
+    }
+
+    /// Get the `Method` of this `FeroxResponse`
+    pub fn method(&self) -> &Method {
+        &self.method
+    }
+
+    /// Get the `wildcard` of this `FeroxResponse`
+    pub fn wildcard(&self) -> bool {
+        self.wildcard
+    }
+
+    /// Get the final `Url` of this `FeroxResponse`.
+    pub fn url(&self) -> &Url {
+        &self.url
+    }
+
+    /// Get the full response text
+    pub fn text(&self) -> &str {
+        &self.text
+    }
+
+    /// Get the `Headers` of this `FeroxResponse`
+    pub fn headers(&self) -> &HeaderMap {
+        &self.headers
+    }
+
+    /// Get the content-length of this response, if known
+    pub fn content_length(&self) -> u64 {
+        self.content_length
+    }
+
+    /// Set `FeroxResponse`'s `url` attribute, has no affect if an error occurs
+    pub fn set_url(&mut self, url: &str) {
+        match Url::parse(url) {
+            Ok(url) => {
+                self.url = url;
+            }
+            Err(e) => {
+                log::warn!("Could not parse {} into a Url: {}", url, e);
+            }
+        };
+    }
+
+    /// set `wildcard` attribute
+    pub fn set_wildcard(&mut self, is_wildcard: bool) {
+        self.wildcard = is_wildcard;
+    }
+
+    /// set `text` attribute; update words/lines/content_length
+    #[cfg(test)]
+    pub fn set_text(&mut self, text: &str) {
+        self.text = String::from(text);
+        self.content_length = self.text.len() as u64;
+        self.line_count = self.text.lines().count();
+        self.word_count = self
+            .text
+            .lines()
+            .map(|s| s.split_whitespace().count())
+            .sum();
+    }
+
+    /// free the `text` data, reducing memory usage
+    pub fn drop_text(&mut self) {
+        self.text = String::new();
+    }
+
+    /// Make a reasonable guess at whether the response is a file or not
+    ///
+    /// Examines the last part of a path to determine if it has an obvious extension
+    /// i.e. http://localhost/some/path/stuff.js where stuff.js indicates a file
+    ///
+    /// Additionally, inspects query parameters, as they're also often indicative of a file
+    pub fn is_file(&self) -> bool {
+        let has_extension = match self.url.path_segments() {
+            Some(path) => {
+                if let Some(last) = path.last() {
+                    last.contains('.') // last segment has some sort of extension, probably
+                } else {
+                    false
+                }
+            }
+            None => false,
+        };
+
+        self.url.query_pairs().count() > 0 || has_extension
+    }
+
+    /// Returns line count of the response text.
+    pub fn line_count(&self) -> usize {
+        self.line_count
+    }
+
+    /// Returns word count of the response text.
+    pub fn word_count(&self) -> usize {
+        self.word_count
+    }
+
+    /// Create a new `FeroxResponse` from the given `Response`
+    pub async fn from(
+        response: Response,
+        original_url: &str,
+        method: &str,
+        output_level: OutputLevel,
+    ) -> Self {
+        let url = response.url().clone();
+        let status = response.status();
+        let headers = response.headers().clone();
+        let content_length = response.content_length().unwrap_or(0);
+
+        // .text() consumes the response, must be called last
+        let text = response
+            .text()
+            .await
+            .with_context(|| "Could not parse body from response")
+            .unwrap_or_default();
+
+        let line_count = text.lines().count();
+        let word_count = text.lines().map(|s| s.split_whitespace().count()).sum();
+
+        FeroxResponse {
+            url,
+            original_url: original_url.to_string(),
+            status,
+            method: Method::from_bytes(method.as_bytes()).unwrap_or(Method::GET),
+            content_length,
+            text,
+            headers,
+            line_count,
+            word_count,
+            output_level,
+            wildcard: false,
+            extension: None,
+        }
+    }
+
+    /// if --collect-extensions is used, examine the response's url and grab the file's extension
+    /// if one is available to be grabbed. If an extension is found, send it to the ScanHandler
+    /// for further processing
+    pub(crate) fn parse_extension(&mut self, handles: Arc<Handles>) -> Result<()> {
+        log::trace!("enter: parse_extension");
+
+        if !handles.config.collect_extensions {
+            // early return, --collect-extensions not used
+            return Ok(());
+        }
+
+        // path_segments:
+        //   Return None for cannot-be-a-base URLs.
+        //   When Some is returned, the iterator always contains at least one string
+        //     (which may be empty).
+        //
+        // meaning: the two unwraps here are fine, the worst outcome is an empty string
+        let filename = self.url.path_segments().unwrap().last().unwrap();
+
+        if !filename.is_empty() {
+            // non-empty string, try to get extension
+            let parts: Vec<_> = filename
+                .split('.')
+                // keep things like /.bash_history from becoming an extension
+                .filter(|part| !part.is_empty())
+                .collect();
+
+            if parts.len() > 1 {
+                // filename + at least one extension, i.e. whatever.js becomes ["whatever", "js"]
+                self.extension = Some(parts.last().unwrap().to_string())
+            }
+        }
+
+        if let Some(extension) = &self.extension {
+            if handles
+                .config
+                .status_codes
+                .contains(&self.status().as_u16())  // in -s list
+                // or -C was used, and -s should be all responses that aren't filtered
+                || !handles.config.filter_status.is_empty()
+            {
+                // only add extensions to those responses that pass our checks; filtered out
+                // status codes are handled by should_filter, but we need to still check against
+                // the allow list for what we want to keep
+                #[cfg(test)]
+                handles
+                    .send_scan_command(Command::AddDiscoveredExtension(extension.to_owned()))
+                    .unwrap_or_default();
+                #[cfg(not(test))]
+                handles.send_scan_command(Command::AddDiscoveredExtension(extension.to_owned()))?;
+            }
+        }
+
+        log::trace!("exit: parse_extension");
+        Ok(())
+    }
+
+    /// Helper function that determines if the configured maximum recursion depth has been reached
+    ///
+    /// Essentially looks at the Url path and determines how many directories are present in the
+    /// given Url
+    pub(crate) fn reached_max_depth(
+        &self,
+        base_depth: usize,
+        max_depth: usize,
+        handles: Arc<Handles>,
+    ) -> bool {
+        log::trace!(
+            "enter: reached_max_depth({}, {}, {:?})",
+            base_depth,
+            max_depth,
+            handles
+        );
+
+        if max_depth == 0 {
+            // early return, as 0 means recurse forever; no additional processing needed
+            log::trace!("exit: reached_max_depth -> false");
+            return false;
+        }
+        let url = FeroxUrl::from_url(&self.url, handles);
+        let depth = url.depth().unwrap_or_default(); // 0 on error
+
+        if depth - base_depth >= max_depth {
+            return true;
+        }
+
+        log::trace!("exit: reached_max_depth -> false");
+        false
+    }
+
+    /// Helper function to determine suitability for recursion
+    ///
+    /// handles 2xx and 3xx responses by either checking if the url ends with a / (2xx)
+    /// or if the Location header is present and matches the base url + / (3xx)
+    pub fn is_directory(&self) -> bool {
+        log::trace!("enter: is_directory({})", self);
+
+        if self.status().is_redirection() {
+            // status code is 3xx
+            match self.headers().get("Location") {
+                // and has a Location header
+                Some(loc) => {
+                    // get absolute redirect Url based on the already known base url
+                    log::debug!("Location header: {:?}", loc);
+
+                    if let Ok(loc_str) = loc.to_str() {
+                        if let Ok(abs_url) = self.url().join(loc_str) {
+                            if format!("{}/", self.url()) == abs_url.as_str() {
+                                // if current response's Url + / == the absolute redirection
+                                // location, we've found a directory suitable for recursion
+                                log::debug!(
+                                    "found directory suitable for recursion: {}",
+                                    self.url()
+                                );
+                                log::trace!("exit: is_directory -> true");
+                                return true;
+                            }
+                        }
+                    }
+                }
+                None => {
+                    log::debug!("expected Location header, but none was found: {}", self);
+                    log::trace!("exit: is_directory -> false");
+                    return false;
+                }
+            }
+        } else if self.status().is_success() || matches!(self.status(), &StatusCode::FORBIDDEN) {
+            // status code is 2xx or 403, need to check if it ends in /
+
+            if self.url().as_str().ends_with('/') {
+                log::debug!("{} is directory suitable for recursion", self.url());
+                log::trace!("exit: is_directory -> true");
+                return true;
+            }
+        }
+
+        log::trace!("exit: is_directory -> false");
+        false
+    }
+
+    /// Simple helper to send a `FeroxResponse` over the tx side of an `mpsc::unbounded_channel`
+    pub fn send_report(self, report_sender: CommandSender) -> Result<()> {
+        log::trace!("enter: send_report({:?}", report_sender);
+
+        report_sender.send(Command::Report(Box::new(self)))?;
+
+        log::trace!("exit: send_report");
+        Ok(())
+    }
+}
+
+/// Implement FeroxSerialize for FeroxResponse
+impl FeroxSerialize for FeroxResponse {
+    /// Simple wrapper around create_report_string
+    fn as_str(&self) -> String {
+        let lines = self.line_count().to_string();
+        let words = self.word_count().to_string();
+        let chars = self.content_length().to_string();
+        let status = self.status().as_str();
+        let method = self.method().as_str();
+        let wild_status = status_colorizer("WLD");
+
+        let mut url_with_redirect = match (
+            self.status().is_redirection(),
+            self.headers().get("Location").is_some(),
+        ) {
+            (true, true) => {
+                // redirect with Location header, show where it goes if possible
+                let loc = self
+                    .headers()
+                    .get("Location")
+                    .unwrap() // known Some() already
+                    .to_str()
+                    .unwrap_or("Unknown")
+                    .to_string();
+
+                let loc = if loc.starts_with('/') {
+                    if let Ok(joined) = self.url().join(&loc) {
+                        joined.to_string()
+                    } else {
+                        loc
+                    }
+                } else {
+                    loc
+                };
+
+                // prettify the redirect target
+                let loc = style(loc).yellow();
+
+                format!("{} => {loc}", self.url())
+            }
+            _ => {
+                // no redirect, just use the normal url
+                self.url().to_string()
+            }
+        };
+
+        if self.wildcard && matches!(self.output_level, OutputLevel::Default | OutputLevel::Quiet) {
+            // --silent was not used and response is a wildcard, special messages abound when
+            // this is the case...
+
+            // create the base message
+            let mut message = format!(
+                "{} {:>8} {:>8}l {:>8}w {:>8}c Got {} for {} (url length: {})\n",
+                wild_status,
+                method,
+                lines,
+                words,
+                chars,
+                status_colorizer(status),
+                self.url(),
+                FeroxUrl::path_length_of_url(&self.url)
+            );
+
+            if self.status().is_redirection() {
+                // initial wildcard messages are wordy enough, put the redirect by itself
+                url_with_redirect = format!(
+                    "{} {:>9} {:>9} {:>9} {}\n",
+                    wild_status, "-", "-", "-", url_with_redirect
+                );
+
+                // base message + redirection message (either empty string or redir msg)
+                message.push_str(&url_with_redirect);
+            }
+
+            message
+        } else {
+            // not a wildcard, just create a normal entry
+            utils::create_report_string(
+                self.status.as_str(),
+                method,
+                &lines,
+                &words,
+                &chars,
+                &url_with_redirect,
+                self.output_level,
+            )
+        }
+    }
+
+    /// Create an NDJSON representation of the FeroxResponse
+    ///
+    /// (expanded for clarity)
+    /// ex:
+    /// {
+    ///    "type":"response",
+    ///    "url":"https://localhost.com/images",
+    ///    "path":"/images",
+    ///    "status":301,
+    ///    "content_length":179,
+    ///    "line_count":10,
+    ///    "word_count":16,
+    ///    "headers":{
+    ///       "x-content-type-options":"nosniff",
+    ///       "strict-transport-security":"max-age=31536000; includeSubDomains",
+    ///       "x-frame-options":"SAMEORIGIN",
+    ///       "connection":"keep-alive",
+    ///       "server":"nginx/1.16.1",
+    ///       "content-type":"text/html; charset=UTF-8",
+    ///       "referrer-policy":"origin-when-cross-origin",
+    ///       "content-security-policy":"default-src 'none'",
+    ///       "access-control-allow-headers":"X-Requested-With",
+    ///       "x-xss-protection":"1; mode=block",
+    ///       "content-length":"179",
+    ///       "date":"Mon, 23 Nov 2020 15:33:24 GMT",
+    ///       "location":"/images/",
+    ///       "access-control-allow-origin":"https://localhost.com"
+    ///    }
+    /// }\n
+    fn as_json(&self) -> anyhow::Result<String> {
+        let mut json = serde_json::to_string(&self)
+            .with_context(|| fmt_err(&format!("Could not convert {} to JSON", self.url())))?;
+        json.push('\n');
+        Ok(json)
+    }
+}
+
+/// Serialize implementation for FeroxResponse
+impl Serialize for FeroxResponse {
+    /// Function that handles serialization of a FeroxResponse to NDJSON
+    fn serialize<S>(&self, serializer: S) -> anyhow::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut headers = HashMap::new();
+        let mut state = serializer.serialize_struct("FeroxResponse", 8)?;
+
+        // need to convert the HeaderMap to a HashMap in order to pass it to the serializer
+        for (key, value) in &self.headers {
+            let k = key.as_str().to_owned();
+            let v = String::from_utf8_lossy(value.as_bytes());
+            headers.insert(k, v);
+        }
+
+        state.serialize_field("type", "response")?;
+        state.serialize_field("url", self.url.as_str())?;
+        state.serialize_field("original_url", self.original_url.as_str())?;
+        state.serialize_field("path", self.url.path())?;
+        state.serialize_field("wildcard", &self.wildcard)?;
+        state.serialize_field("status", &self.status.as_u16())?;
+        state.serialize_field("method", &self.method.as_str())?;
+        state.serialize_field("content_length", &self.content_length)?;
+        state.serialize_field("line_count", &self.line_count)?;
+        state.serialize_field("word_count", &self.word_count)?;
+        state.serialize_field("headers", &headers)?;
+        state.serialize_field(
+            "extension",
+            self.extension.as_ref().unwrap_or(&String::new()),
+        )?;
+
+        state.end()
+    }
+}
+
+/// Deserialize implementation for FeroxResponse
+impl<'de> Deserialize<'de> for FeroxResponse {
+    /// Deserialize a FeroxResponse from a serde_json::Value
+    fn deserialize<D>(deserializer: D) -> anyhow::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let mut response = Self {
+            url: Url::parse("http://localhost").unwrap(),
+            original_url: String::new(),
+            status: StatusCode::OK,
+            method: Method::GET,
+            text: String::new(),
+            content_length: 0,
+            headers: HeaderMap::new(),
+            wildcard: false,
+            output_level: Default::default(),
+            line_count: 0,
+            word_count: 0,
+            extension: None,
+        };
+
+        let map: HashMap<String, Value> = HashMap::deserialize(deserializer)?;
+
+        for (key, value) in &map {
+            match key.as_str() {
+                "url" => {
+                    if let Some(url) = value.as_str() {
+                        if let Ok(parsed) = Url::parse(url) {
+                            response.url = parsed;
+                        }
+                    }
+                }
+                "original_url" => {
+                    if let Some(og_url) = value.as_str() {
+                        response.original_url = String::from(og_url);
+                    }
+                }
+                "status" => {
+                    if let Some(num) = value.as_u64() {
+                        if let Ok(smaller) = u16::try_from(num) {
+                            if let Ok(status) = StatusCode::from_u16(smaller) {
+                                response.status = status;
+                            }
+                        }
+                    }
+                }
+                "method" => {
+                    if let Some(method) = value.as_str() {
+                        response.method = Method::from_bytes(method.as_bytes()).unwrap_or_default();
+                    }
+                }
+                "content_length" => {
+                    if let Some(num) = value.as_u64() {
+                        response.content_length = num;
+                    }
+                }
+                "line_count" => {
+                    if let Some(num) = value.as_u64() {
+                        response.line_count = num.try_into().unwrap_or_default();
+                    }
+                }
+                "word_count" => {
+                    if let Some(num) = value.as_u64() {
+                        response.word_count = num.try_into().unwrap_or_default();
+                    }
+                }
+                "headers" => {
+                    let mut headers = HeaderMap::<HeaderValue>::default();
+
+                    if let Some(map_headers) = value.as_object() {
+                        for (h_key, h_value) in map_headers {
+                            let h_value_str = h_value.as_str().unwrap_or("");
+                            let h_name = HeaderName::from_str(h_key)
+                                .unwrap_or_else(|_| HeaderName::from_str("Unknown").unwrap());
+                            let h_value_parsed = HeaderValue::from_str(h_value_str)
+                                .unwrap_or_else(|_| HeaderValue::from_str("Unknown").unwrap());
+                            headers.insert(h_name, h_value_parsed);
+                        }
+                    }
+
+                    response.headers = headers;
+                }
+                "wildcard" => {
+                    if let Some(result) = value.as_bool() {
+                        response.wildcard = result;
+                    }
+                }
+                "extension" => {
+                    if let Some(result) = value.as_str() {
+                        response.extension = Some(result.to_string());
+                    }
+                }
+                _ => {}
+            }
+        }
+
+        Ok(response)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::config::Configuration;
+    use std::default::Default;
+
+    #[test]
+    /// call reached_max_depth with max depth of zero, which is infinite recursion, expect false
+    fn reached_max_depth_returns_early_on_zero() {
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+        let url = Url::parse("http://localhost").unwrap();
+        let response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+        let result = response.reached_max_depth(0, 0, handles);
+        assert!(!result);
+    }
+
+    #[test]
+    /// call reached_max_depth with url depth equal to max depth, expect true
+    fn reached_max_depth_current_depth_equals_max() {
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+
+        let url = Url::parse("http://localhost/one/two").unwrap();
+        let response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        let result = response.reached_max_depth(0, 2, handles);
+        assert!(result);
+    }
+
+    #[test]
+    /// call reached_max_depth with url dpeth less than max depth, expect false
+    fn reached_max_depth_current_depth_less_than_max() {
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+        let url = Url::parse("http://localhost").unwrap();
+        let response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        let result = response.reached_max_depth(0, 2, handles);
+        assert!(!result);
+    }
+
+    #[test]
+    /// call reached_max_depth with url of 2, base depth of 2, and max depth of 2, expect false
+    fn reached_max_depth_base_depth_equals_max_depth() {
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+        let url = Url::parse("http://localhost/one/two").unwrap();
+        let response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        let result = response.reached_max_depth(2, 2, handles);
+        assert!(!result);
+    }
+
+    #[test]
+    /// call reached_max_depth with url depth greater than max depth, expect true
+    fn reached_max_depth_current_greater_than_max() {
+        let handles = Arc::new(Handles::for_testing(None, None).0);
+        let url = Url::parse("http://localhost/one/two/three").unwrap();
+        let response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        let result = response.reached_max_depth(0, 2, handles);
+        assert!(result);
+    }
+
+    #[test]
+    /// simple case of a single extension gets parsed correctly and stored on the `FeroxResponse`
+    fn parse_extension_finds_simple_extension() {
+        let config = Configuration {
+            collect_extensions: true,
+            ..Default::default()
+        };
+
+        let (handles, _) = Handles::for_testing(None, Some(Arc::new(config)));
+
+        let url = Url::parse("http://localhost/derp.js").unwrap();
+
+        let mut response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        response.parse_extension(Arc::new(handles)).unwrap();
+
+        assert_eq!(response.extension, Some(String::from("js")));
+    }
+
+    #[test]
+    /// hidden files shouldn't be parsed as extensions, i.e. `/.bash_history`
+    fn parse_extension_ignores_hidden_files() {
+        let config = Configuration {
+            collect_extensions: true,
+            ..Default::default()
+        };
+
+        let (handles, _) = Handles::for_testing(None, Some(Arc::new(config)));
+
+        let url = Url::parse("http://localhost/.bash_history").unwrap();
+
+        let mut response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        response.parse_extension(Arc::new(handles)).unwrap();
+
+        assert_eq!(response.extension, None);
+    }
+
+    #[test]
+    /// `parse_extension` should return immediately if `--collect-extensions` isn't used
+    fn parse_extension_early_returns_based_on_config() {
+        let (handles, _) = Handles::for_testing(None, None);
+
+        let url = Url::parse("http://localhost/derp.js").unwrap();
+
+        let mut response = FeroxResponse {
+            url,
+            ..Default::default()
+        };
+
+        response.parse_extension(Arc::new(handles)).unwrap();
+
+        assert_eq!(response.extension, None);
+    }
+}
--- a/src/scan_manager.rs
+++ b/src/scan_manager.rs
--- a/src/scan_manager/menu.rs
+++ b/src/scan_manager/menu.rs
@@ -0,0 +1,307 @@
+use crate::filters::filter_lookup;
+use crate::progress::PROGRESS_BAR;
+use crate::traits::FeroxFilter;
+use console::{measure_text_width, pad_str, style, Alignment, Term};
+use indicatif::ProgressDrawTarget;
+use regex::Regex;
+
+/// Data container for a command entered by the user interactively
+#[derive(Debug)]
+pub enum MenuCmd {
+    /// user wants to add a url to be scanned
+    AddUrl(String),
+
+    /// user wants to cancel one or more active scans
+    Cancel(Vec<usize>, bool),
+
+    /// user wants to create a new filter
+    AddFilter(Box<dyn FeroxFilter>),
+
+    /// user wants to remove one or more active filters
+    RemoveFilter(Vec<usize>),
+}
+
+/// Data container for a command result to be used internally by the ferox_scanner
+#[derive(Debug)]
+pub enum MenuCmdResult {
+    /// Url to be added to the scan queue
+    Url(String),
+
+    /// Number of scans that were actually cancelled, can be 0
+    NumCancelled(usize),
+
+    /// Filter to be added to current list of `FeroxFilters`
+    Filter(Box<dyn FeroxFilter>),
+}
+
+/// Interactive scan cancellation menu
+#[derive(Debug)]
+pub(super) struct Menu {
+    /// header: name surrounded by separators
+    header: String,
+
+    /// footer: instructions surrounded by separators
+    footer: String,
+
+    /// unicode line border, matched to longest displayed line
+    border: String,
+
+    /// target for output
+    pub(super) term: Term,
+}
+
+/// Implementation of Menu
+impl Menu {
+    /// Creates new Menu
+    pub(super) fn new() -> Self {
+        let separator = "─".to_string();
+
+        let name = format!(
+            "{} {} {}",
+            "💀",
+            style("Scan Management Menu").bright().yellow(),
+            "💀"
+        );
+
+        let add_cmd = format!(
+            "  {}[{}] NEW_URL (ex: {} http://localhost)\n",
+            style("a").green(),
+            style("dd").green(),
+            style("add").green()
+        );
+
+        let canx_cmd = format!(
+            "  {}[{}] [-f] SCAN_ID[-SCAN_ID[,...]] (ex: {} 1-4,8,9-13 or {} -f 3)\n",
+            style("c").red(),
+            style("ancel").red(),
+            style("cancel").red(),
+            style("c").red(),
+        );
+
+        let new_filter_cmd = format!(
+            "  {}[{}] FILTER_TYPE FILTER_VALUE (ex: {} lines 40)\n",
+            style("n").green(),
+            style("ew-filter").green(),
+            style("n").green(),
+        );
+
+        let valid_filters = format!(
+            "    FILTER_TYPEs: {}, {}, {}, {}, {}, {}\n",
+            style("status").yellow(),
+            style("lines").yellow(),
+            style("size").yellow(),
+            style("words").yellow(),
+            style("regex").yellow(),
+            style("similarity").yellow()
+        );
+
+        let rm_filter_cmd = format!(
+            "  {}[{}] FILTER_ID[-FILTER_ID[,...]] (ex: {} 1-4,8,9-13 or {} 3)",
+            style("r").red(),
+            style("m-filter").red(),
+            style("rm-filter").red(),
+            style("r").red(),
+        );
+
+        let mut commands = format!("{}:\n", style("Commands").bright().blue());
+        commands.push_str(&add_cmd);
+        commands.push_str(&canx_cmd);
+        commands.push_str(&new_filter_cmd);
+        commands.push_str(&valid_filters);
+        commands.push_str(&rm_filter_cmd);
+
+        let longest = measure_text_width(&canx_cmd).max(measure_text_width(&name));
+
+        let border = separator.repeat(longest);
+
+        let padded_name = pad_str(&name, longest, Alignment::Center, None);
+
+        let header = format!("{}\n{}\n{}", border, padded_name, border);
+        let footer = format!("{}\n{}", commands, border);
+
+        Self {
+            header,
+            footer,
+            border,
+            term: Term::stderr(),
+        }
+    }
+
+    /// print menu header
+    pub(super) fn print_header(&self) {
+        self.println(&self.header);
+    }
+
+    /// print menu unicode border line
+    pub(super) fn print_border(&self) {
+        self.println(&self.border);
+    }
+
+    /// print menu footer
+    pub(super) fn print_footer(&self) {
+        self.println(&self.footer);
+    }
+
+    /// set PROGRESS_BAR bar target to hidden
+    pub(super) fn hide_progress_bars(&self) {
+        PROGRESS_BAR.set_draw_target(ProgressDrawTarget::hidden());
+    }
+
+    /// set PROGRESS_BAR bar target to hidden
+    pub(super) fn show_progress_bars(&self) {
+        PROGRESS_BAR.set_draw_target(ProgressDrawTarget::stdout());
+    }
+
+    /// Wrapper around console's Term::clear_screen and flush
+    pub(super) fn clear_screen(&self) {
+        self.term.clear_screen().unwrap_or_default();
+        self.term.flush().unwrap_or_default();
+    }
+
+    /// Wrapper around console's Term::write_line
+    pub(super) fn println(&self, msg: &str) {
+        self.term.write_line(msg).unwrap_or_default();
+    }
+
+    /// Helper for parsing a usize from a str
+    fn str_to_usize(&self, value: &str) -> usize {
+        if value.is_empty() {
+            return 0;
+        }
+
+        value
+            .trim()
+            .to_string()
+            .parse::<usize>()
+            .unwrap_or_else(|e| {
+                self.println(&format!("Found non-numeric input: {}: {:?}", e, value));
+                0
+            })
+    }
+
+    /// split a comma delimited string into vec of usizes
+    pub(super) fn split_to_nums(&self, line: &str) -> Vec<usize> {
+        let mut nums = Vec::new();
+        let values = line.split(',');
+
+        for mut value in values {
+            value = value.trim();
+
+            if value.contains('-') {
+                // range of two values, needs further processing
+
+                let range: Vec<usize> = value
+                    .split('-')
+                    .map(|s| self.str_to_usize(s))
+                    .filter(|m| *m != 0)
+                    .collect();
+
+                if range.len() != 2 {
+                    // expecting [1, 4] or similar, if a 0 was used, we'd be left with a vec of size 1
+                    self.println(&format!("Found invalid range of scans: {}", value));
+                    continue;
+                }
+
+                (range[0]..=range[1]).for_each(|n| {
+                    // iterate from lower to upper bound and add all interim values, skipping
+                    // any already known
+                    if !nums.contains(&n) {
+                        nums.push(n)
+                    }
+                });
+            } else {
+                let value = self.str_to_usize(value);
+
+                if value != 0 && !nums.contains(&value) {
+                    // the zeroth scan is always skipped, skip already known values
+                    nums.push(value);
+                }
+            }
+        }
+
+        nums
+    }
+
+    /// get input from the user and translate it to a `MenuCmd`
+    pub(super) fn get_command_input_from_user(&self, line: &str) -> Option<MenuCmd> {
+        let line = line.trim(); // normalize input if there are leading spaces
+
+        match line.chars().next().unwrap_or('_').to_ascii_lowercase() {
+            'c' => {
+                // cancel command; start by determining if -f was used
+                let force = line.contains("-f");
+
+                // then remove c[ancel] from the command so it can be passed to the number
+                // splitter
+                let re = Regex::new(r"^[cC][ancelANCEL]*").unwrap();
+                let line = line.replace("-f", "");
+                let line = re.replace(&line, "").to_string();
+
+                Some(MenuCmd::Cancel(self.split_to_nums(&line), force))
+            }
+            'a' => {
+                // add command
+                // similar to cancel, we need to remove the a[dd] substring, the rest should be
+                // a url
+                let re = Regex::new(r"^[aA][dD]*").unwrap();
+                let line = re.replace(line, "").to_string().trim().to_string();
+
+                Some(MenuCmd::AddUrl(line))
+            }
+            'n' => {
+                // new filter command
+                let mut line = line.split_whitespace();
+                line.next(); // 'n' or 'new-filter'
+
+                if let Some(filter_type) = line.next() {
+                    // have a string in the filter_type position
+                    if let Some(filter_value) = line.next() {
+                        // have a string in the filter_value position
+                        if let Some(result) = filter_lookup(filter_type, filter_value) {
+                            // lookup was successful, return the new filter
+                            return Some(MenuCmd::AddFilter(result));
+                        }
+                    }
+                }
+                None
+            }
+            'r' => {
+                // remove filter command
+
+                // remove r[m-filter] from the command so it can be passed to the number
+                // splitter
+                let re = Regex::new(r"^[rR][mfilterMFILTER-]*").unwrap();
+                // we don't respect a -f or lack thereof in this command, but in case the user
+                // doesn't realize / thinks its the same as cancel -f, just remove it
+                let line = line.replace("-f", "");
+                let line = re.replace(&line, "").to_string();
+
+                let indices = self.split_to_nums(&line);
+
+                Some(MenuCmd::RemoveFilter(indices))
+            }
+            _ => {
+                // invalid input
+                None
+            }
+        }
+    }
+
+    /// Given a url, confirm with user that we should cancel
+    pub(super) fn confirm_cancellation(&self, url: &str) -> char {
+        self.println(&format!(
+            "You sure you wanna cancel this scan: {}? [Y/n]",
+            url
+        ));
+
+        self.term.read_char().unwrap_or('n')
+    }
+}
+
+/// Default implementation for Menu
+impl Default for Menu {
+    /// return Menu::new as default
+    fn default() -> Menu {
+        Menu::new()
+    }
+}
--- a/src/scan_manager/mod.rs
+++ b/src/scan_manager/mod.rs
@@ -0,0 +1,18 @@
+mod scan_container;
+mod response_container;
+mod scan;
+mod menu;
+mod utils;
+mod order;
+mod state;
+#[cfg(test)]
+mod tests;
+
+pub(self) use menu::Menu;
+pub use menu::{MenuCmd, MenuCmdResult};
+pub use order::ScanOrder;
+pub use response_container::FeroxResponses;
+pub use scan::{FeroxScan, ScanStatus, ScanType};
+pub use scan_container::{FeroxScans, PAUSE_SCAN};
+pub use state::FeroxState;
+pub use utils::{resume_scan, start_max_time_thread};
--- a/src/scan_manager/order.rs
+++ b/src/scan_manager/order.rs
@@ -0,0 +1,10 @@
+#[derive(Debug, Copy, Clone)]
+/// Simple enum to designate whether a URL was passed in by the user (Initial) or found during
+/// scanning (Latest)
+pub enum ScanOrder {
+    /// Url was passed in by the user
+    Initial,
+
+    /// Url was found during scanning
+    Latest,
+}
--- a/src/scan_manager/response_container.rs
+++ b/src/scan_manager/response_container.rs
@@ -0,0 +1,55 @@
+use crate::response::FeroxResponse;
+use serde::{ser::SerializeSeq, Serialize, Serializer};
+use std::sync::{Arc, RwLock};
+
+/// Container around a locked vector of `FeroxResponse`s, adds wrappers for insertion and search
+#[derive(Debug, Default)]
+pub struct FeroxResponses {
+    /// Internal structure: locked hashset of `FeroxScan`s
+    pub responses: Arc<RwLock<Vec<FeroxResponse>>>,
+}
+
+/// Serialize implementation for FeroxResponses
+impl Serialize for FeroxResponses {
+    /// Function that handles serialization of FeroxResponses
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        if let Ok(responses) = self.responses.read() {
+            let mut seq = serializer.serialize_seq(Some(responses.len()))?;
+
+            for response in responses.iter() {
+                seq.serialize_element(response)?;
+            }
+
+            seq.end()
+        } else {
+            // if for some reason we can't unlock the mutex, just write an empty list
+            let seq = serializer.serialize_seq(Some(0))?;
+            seq.end()
+        }
+    }
+}
+
+/// Implementation of `FeroxResponses`
+impl FeroxResponses {
+    /// Add a `FeroxResponse` to the internal container
+    pub fn insert(&self, response: FeroxResponse) {
+        if let Ok(mut responses) = self.responses.write() {
+            responses.push(response);
+        }
+    }
+
+    /// Simple check for whether or not a FeroxResponse is contained within the inner container
+    pub fn contains(&self, other: &FeroxResponse) -> bool {
+        if let Ok(responses) = self.responses.read() {
+            for response in responses.iter() {
+                if response.url() == other.url() && response.method() == other.method() {
+                    return true;
+                }
+            }
+        }
+        false
+    }
+}
--- a/src/scan_manager/scan.rs
+++ b/src/scan_manager/scan.rs
@@ -0,0 +1,528 @@
+use super::*;
+use crate::{
+    config::OutputLevel,
+    progress::{add_bar, BarType},
+    scanner::PolicyTrigger,
+};
+use anyhow::Result;
+use console::style;
+use indicatif::ProgressBar;
+use serde::{ser::SerializeStruct, Deserialize, Deserializer, Serialize, Serializer};
+use serde_json::Value;
+use std::{
+    collections::HashMap,
+    fmt,
+    sync::{Arc, Mutex},
+    time::Instant,
+};
+
+use std::sync::atomic::{AtomicUsize, Ordering};
+use tokio::{sync, task::JoinHandle};
+use uuid::Uuid;
+
+/// Struct to hold scan-related state
+///
+/// The purpose of this container is to open up the pathway to aborting currently running tasks and
+/// serialization of all scan state into a state file in order to resume scans that were cut short
+#[derive(Debug)]
+pub struct FeroxScan {
+    /// UUID that uniquely ID's the scan
+    pub(super) id: String,
+
+    /// The URL that to be scanned
+    pub(super) url: String,
+
+    /// A url used solely for comparison to other URLs
+    pub(super) normalized_url: String,
+
+    /// The type of scan
+    pub scan_type: ScanType,
+
+    /// The order in which the scan was received
+    pub(crate) scan_order: ScanOrder,
+
+    /// Number of requests to populate the progress bar with
+    pub(super) num_requests: u64,
+
+    /// Status of this scan
+    pub status: Mutex<ScanStatus>,
+
+    /// The spawned tokio task performing this scan (uses tokio::sync::Mutex)
+    pub(super) task: sync::Mutex<Option<JoinHandle<()>>>,
+
+    /// The progress bar associated with this scan
+    pub(super) progress_bar: Mutex<Option<ProgressBar>>,
+
+    /// whether or not the user passed --silent|--quiet on the command line
+    pub(super) output_level: OutputLevel,
+
+    /// tracker for overall number of 403s seen by the FeroxScan instance
+    pub(super) status_403s: AtomicUsize,
+
+    /// tracker for overall number of 429s seen by the FeroxScan instance
+    pub(super) status_429s: AtomicUsize,
+
+    /// tracker for total number of errors encountered by the FeroxScan instance
+    pub(super) errors: AtomicUsize,
+
+    /// tracker for the time at which this scan was started
+    pub(super) start_time: Instant,
+}
+
+/// Default implementation for FeroxScan
+impl Default for FeroxScan {
+    /// Create a default FeroxScan, populates ID with a new UUID
+    fn default() -> Self {
+        let new_id = Uuid::new_v4().as_simple().to_string();
+
+        FeroxScan {
+            id: new_id,
+            task: sync::Mutex::new(None), // tokio mutex
+            status: Mutex::new(ScanStatus::default()),
+            num_requests: 0,
+            scan_order: ScanOrder::Latest,
+            url: String::new(),
+            normalized_url: String::new(),
+            progress_bar: Mutex::new(None),
+            scan_type: ScanType::File,
+            output_level: Default::default(),
+            errors: Default::default(),
+            status_429s: Default::default(),
+            status_403s: Default::default(),
+            start_time: Instant::now(),
+        }
+    }
+}
+
+/// Implementation of FeroxScan
+impl FeroxScan {
+    /// Stop a currently running scan
+    pub async fn abort(&self) -> Result<()> {
+        log::trace!("enter: abort");
+
+        match self.task.try_lock() {
+            Ok(mut guard) => {
+                if let Some(task) = std::mem::replace(&mut *guard, None) {
+                    log::trace!("aborting {:?}", self);
+                    task.abort();
+                    self.set_status(ScanStatus::Cancelled)?;
+                    self.stop_progress_bar();
+                }
+            }
+            Err(e) => {
+                log::warn!("Could not acquire lock to abort scan (we're already waiting for its results): {:?} {}", self, e);
+            }
+        }
+        log::trace!("exit: abort");
+        Ok(())
+    }
+
+    /// getter for url
+    pub fn url(&self) -> &str {
+        &self.url
+    }
+
+    /// small wrapper to set the JoinHandle
+    pub async fn set_task(&self, task: JoinHandle<()>) -> Result<()> {
+        let mut guard = self.task.lock().await;
+        let _ = std::mem::replace(&mut *guard, Some(task));
+        Ok(())
+    }
+
+    /// small wrapper to set ScanStatus
+    pub fn set_status(&self, status: ScanStatus) -> Result<()> {
+        if let Ok(mut guard) = self.status.lock() {
+            let _ = std::mem::replace(&mut *guard, status);
+        }
+        Ok(())
+    }
+
+    /// Simple helper to call .finish on the scan's progress bar
+    pub(super) fn stop_progress_bar(&self) {
+        if let Ok(guard) = self.progress_bar.lock() {
+            if guard.is_some() {
+                (*guard).as_ref().unwrap().finish_at_current_pos()
+            }
+        }
+    }
+
+    /// Simple helper get a progress bar
+    pub fn progress_bar(&self) -> ProgressBar {
+        match self.progress_bar.lock() {
+            Ok(mut guard) => {
+                if guard.is_some() {
+                    (*guard).as_ref().unwrap().clone()
+                } else {
+                    let bar_type = match self.output_level {
+                        OutputLevel::Default => BarType::Default,
+                        OutputLevel::Quiet => BarType::Quiet,
+                        OutputLevel::Silent => BarType::Hidden,
+                    };
+
+                    let pb = add_bar(&self.url, self.num_requests, bar_type);
+                    pb.reset_elapsed();
+
+                    let _ = std::mem::replace(&mut *guard, Some(pb.clone()));
+
+                    pb
+                }
+            }
+            Err(_) => {
+                log::warn!("Could not unlock progress bar on {:?}", self);
+
+                let bar_type = match self.output_level {
+                    OutputLevel::Default => BarType::Default,
+                    OutputLevel::Quiet => BarType::Quiet,
+                    OutputLevel::Silent => BarType::Hidden,
+                };
+
+                let pb = add_bar(&self.url, self.num_requests, bar_type);
+                pb.reset_elapsed();
+
+                pb
+            }
+        }
+    }
+
+    /// Given a URL and ProgressBar, create a new FeroxScan, wrap it in an Arc and return it
+    pub fn new(
+        url: &str,
+        scan_type: ScanType,
+        scan_order: ScanOrder,
+        num_requests: u64,
+        output_level: OutputLevel,
+        pb: Option<ProgressBar>,
+    ) -> Arc<Self> {
+        Arc::new(Self {
+            url: url.to_string(),
+            normalized_url: format!("{}/", url.trim_end_matches('/')),
+            scan_type,
+            scan_order,
+            num_requests,
+            output_level,
+            progress_bar: Mutex::new(pb),
+            ..Default::default()
+        })
+    }
+
+    /// Mark the scan as complete and stop the scan's progress bar
+    pub fn finish(&self) -> Result<()> {
+        self.set_status(ScanStatus::Complete)?;
+        self.stop_progress_bar();
+        Ok(())
+    }
+
+    /// small wrapper to inspect ScanType and ScanStatus to see if a Directory scan is running or
+    /// in the queue to be run
+    pub fn is_active(&self) -> bool {
+        if let Ok(guard) = self.status.lock() {
+            return matches!(
+                (self.scan_type, *guard),
+                (ScanType::Directory, ScanStatus::Running)
+                    | (ScanType::Directory, ScanStatus::NotStarted)
+            );
+        }
+        false
+    }
+
+    /// small wrapper to inspect ScanStatus and see if it's Complete
+    pub fn is_complete(&self) -> bool {
+        if let Ok(guard) = self.status.lock() {
+            return matches!(*guard, ScanStatus::Complete);
+        }
+        false
+    }
+
+    /// small wrapper to inspect ScanStatus and see if it's Cancelled
+    pub fn is_cancelled(&self) -> bool {
+        if let Ok(guard) = self.status.lock() {
+            return matches!(*guard, ScanStatus::Cancelled);
+        }
+        false
+    }
+
+    /// await a task's completion, similar to a thread's join; perform necessary bookkeeping
+    pub async fn join(&self) {
+        log::trace!("enter join({:?})", self);
+        let mut guard = self.task.lock().await;
+
+        if guard.is_some() {
+            if let Some(task) = std::mem::replace(&mut *guard, None) {
+                task.await.unwrap();
+                self.set_status(ScanStatus::Complete)
+                    .unwrap_or_else(|e| log::warn!("Could not mark scan complete: {}", e))
+            }
+        }
+
+        log::trace!("exit join({:?})", self);
+    }
+    /// increment the value in question by 1
+    pub(crate) fn add_403(&self) {
+        self.status_403s.fetch_add(1, Ordering::Relaxed);
+    }
+
+    /// increment the value in question by 1
+    pub(crate) fn add_429(&self) {
+        self.status_429s.fetch_add(1, Ordering::Relaxed);
+    }
+
+    /// increment the value in question by 1
+    pub(crate) fn add_error(&self) {
+        self.errors.fetch_add(1, Ordering::Relaxed);
+    }
+
+    /// simple wrapper to call the appropriate getter based on the given PolicyTrigger
+    pub fn num_errors(&self, trigger: PolicyTrigger) -> usize {
+        match trigger {
+            PolicyTrigger::Status403 => self.status_403s(),
+            PolicyTrigger::Status429 => self.status_429s(),
+            PolicyTrigger::Errors => self.errors(),
+        }
+    }
+
+    /// return the number of errors seen by this scan
+    fn errors(&self) -> usize {
+        self.errors.load(Ordering::Relaxed)
+    }
+
+    /// return the number of 403s seen by this scan
+    fn status_403s(&self) -> usize {
+        self.status_403s.load(Ordering::Relaxed)
+    }
+
+    /// return the number of 429s seen by this scan
+    fn status_429s(&self) -> usize {
+        self.status_429s.load(Ordering::Relaxed)
+    }
+
+    /// return the number of requests per second performed by this scan's scanner
+    pub fn requests_per_second(&self) -> u64 {
+        if !self.is_active() {
+            return 0;
+        }
+
+        let reqs = self.requests();
+        let seconds = self.start_time.elapsed().as_secs();
+
+        reqs.checked_div(seconds).unwrap_or(0)
+    }
+
+    /// return the number of requests performed by this scan's scanner
+    pub fn requests(&self) -> u64 {
+        self.progress_bar().position()
+    }
+}
+
+/// Display implementation
+impl fmt::Display for FeroxScan {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let status = if let Ok(guard) = self.status.lock() {
+            match *guard {
+                ScanStatus::NotStarted => style("not started").bright().blue(),
+                ScanStatus::Complete => style("complete").green(),
+                ScanStatus::Cancelled => style("cancelled").red(),
+                ScanStatus::Running => style("running").bright().yellow(),
+            }
+        } else {
+            style("unknown").red()
+        };
+
+        write!(f, "{:12} {}", status, self.url)
+    }
+}
+
+/// PartialEq implementation; uses FeroxScan.id for comparison
+impl PartialEq for FeroxScan {
+    fn eq(&self, other: &Self) -> bool {
+        self.id == other.id
+    }
+}
+
+/// Serialize implementation for FeroxScan
+impl Serialize for FeroxScan {
+    /// Function that handles serialization of a FeroxScan
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut state = serializer.serialize_struct("FeroxScan", 6)?;
+
+        state.serialize_field("id", &self.id)?;
+        state.serialize_field("url", &self.url)?;
+        state.serialize_field("normalized_url", &self.normalized_url)?;
+        state.serialize_field("scan_type", &self.scan_type)?;
+        state.serialize_field("status", &self.status)?;
+        state.serialize_field("num_requests", &self.num_requests)?;
+
+        state.end()
+    }
+}
+
+/// Deserialize implementation for FeroxScan
+impl<'de> Deserialize<'de> for FeroxScan {
+    /// Deserialize a FeroxScan from a serde_json::Value
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let mut scan = Self::default();
+
+        let map: HashMap<String, Value> = HashMap::deserialize(deserializer)?;
+
+        for (key, value) in &map {
+            match key.as_str() {
+                "id" => {
+                    if let Some(id) = value.as_str() {
+                        scan.id = id.to_string();
+                    }
+                }
+                "scan_type" => {
+                    if let Some(scan_type) = value.as_str() {
+                        scan.scan_type = match scan_type {
+                            "File" => ScanType::File,
+                            "Directory" => ScanType::Directory,
+                            _ => ScanType::File,
+                        }
+                    }
+                }
+                "status" => {
+                    if let Some(status) = value.as_str() {
+                        scan.status = Mutex::new(match status {
+                            "NotStarted" => ScanStatus::NotStarted,
+                            "Running" => ScanStatus::Running,
+                            "Complete" => ScanStatus::Complete,
+                            "Cancelled" => ScanStatus::Cancelled,
+                            _ => ScanStatus::default(),
+                        })
+                    }
+                }
+                "url" => {
+                    if let Some(url) = value.as_str() {
+                        scan.url = url.to_string();
+                    }
+                }
+                "normalized_url" => {
+                    if let Some(normalized_url) = value.as_str() {
+                        scan.normalized_url = normalized_url.to_string();
+                    }
+                }
+                "num_requests" => {
+                    if let Some(num_requests) = value.as_u64() {
+                        scan.num_requests = num_requests;
+                    }
+                }
+                _ => {}
+            }
+        }
+
+        Ok(scan)
+    }
+}
+
+/// Simple enum used to flag a `FeroxScan` as likely a directory or file
+#[derive(Debug, Serialize, Deserialize, Copy, Clone)]
+pub enum ScanType {
+    /// Just a file being requested
+    File,
+
+    /// A an entire directory that might be scanned
+    Directory,
+}
+
+/// Default implementation for ScanType
+impl Default for ScanType {
+    /// Return ScanType::File as default
+    fn default() -> Self {
+        Self::File
+    }
+}
+
+#[derive(Debug, Serialize, Deserialize, Copy, Clone)]
+/// Simple enum to represent a scan's current status ([in]complete, cancelled)
+pub enum ScanStatus {
+    /// Scan hasn't started yet
+    NotStarted,
+
+    /// Scan finished normally
+    Complete,
+
+    /// Scan was cancelled by the user
+    Cancelled,
+
+    /// Scan has started, but hasn't finished, nor been cancelled
+    Running,
+}
+
+/// Default implementation for ScanStatus
+impl Default for ScanStatus {
+    /// Default variant for ScanStatus is NotStarted
+    fn default() -> Self {
+        Self::NotStarted
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::thread::sleep;
+    use tokio::time::Duration;
+
+    #[test]
+    /// ensure that num_errors returns the correct values for the given PolicyTrigger
+    ///
+    /// covers tests for add_[403,429,error] and the related getters in addition to num_errors
+    fn num_errors_returns_correct_values() {
+        let scan = FeroxScan::new(
+            "http://localhost",
+            ScanType::Directory,
+            ScanOrder::Latest,
+            1000,
+            OutputLevel::Default,
+            None,
+        );
+
+        scan.add_error();
+        scan.add_403();
+        scan.add_403();
+        scan.add_429();
+        scan.add_429();
+        scan.add_429();
+
+        assert_eq!(scan.num_errors(PolicyTrigger::Errors), 1);
+        assert_eq!(scan.num_errors(PolicyTrigger::Status403), 2);
+        assert_eq!(scan.num_errors(PolicyTrigger::Status429), 3);
+    }
+
+    #[test]
+    /// ensure that requests_per_second returns the correct values
+    fn requests_per_second_returns_correct_values() {
+        let scan = FeroxScan {
+            id: "".to_string(),
+            url: "".to_string(),
+            normalized_url: String::from("/"),
+            scan_type: ScanType::Directory,
+            scan_order: ScanOrder::Initial,
+            num_requests: 0,
+            status: Mutex::new(ScanStatus::Running),
+            task: Default::default(),
+            progress_bar: Mutex::new(None),
+            output_level: Default::default(),
+            status_403s: Default::default(),
+            status_429s: Default::default(),
+            errors: Default::default(),
+            start_time: Instant::now(),
+        };
+
+        let pb = scan.progress_bar();
+        pb.set_position(100);
+
+        sleep(Duration::new(1, 0));
+
+        let req_sec = scan.requests_per_second();
+
+        assert_eq!(req_sec, 100);
+
+        scan.finish().unwrap();
+        assert_eq!(scan.requests_per_second(), 0);
+    }
+}
--- a/src/scan_manager/scan_container.rs
+++ b/src/scan_manager/scan_container.rs
@@ -0,0 +1,707 @@
+use super::scan::ScanType;
+use super::*;
+use crate::event_handlers::Handles;
+use crate::filters::{
+    EmptyFilter, LinesFilter, RegexFilter, SimilarityFilter, SizeFilter, StatusCodeFilter,
+    WildcardFilter, WordsFilter,
+};
+use crate::traits::FeroxFilter;
+use crate::Command::AddFilter;
+use crate::{
+    config::OutputLevel,
+    progress::PROGRESS_PRINTER,
+    progress::{add_bar, BarType},
+    scan_manager::{MenuCmd, MenuCmdResult},
+    scanner::RESPONSES,
+    traits::FeroxSerialize,
+    Command, SLEEP_DURATION,
+};
+use anyhow::Result;
+use console::style;
+use reqwest::StatusCode;
+use serde::{ser::SerializeSeq, Serialize, Serializer};
+use std::{
+    collections::HashSet,
+    convert::TryInto,
+    fs::File,
+    io::BufReader,
+    ops::Index,
+    sync::{
+        atomic::{AtomicBool, AtomicUsize, Ordering},
+        Arc, Mutex, RwLock,
+    },
+    thread::sleep,
+};
+use tokio::time::{self, Duration};
+
+/// Single atomic number that gets incremented once, used to track first thread to interact with
+/// when pausing a scan
+static INTERACTIVE_BARRIER: AtomicUsize = AtomicUsize::new(0);
+
+/// Atomic boolean flag, used to determine whether or not a scan should pause or resume
+pub static PAUSE_SCAN: AtomicBool = AtomicBool::new(false);
+
+/// Container around a locked hashset of `FeroxScan`s, adds wrappers for insertion and searching
+#[derive(Debug, Default)]
+pub struct FeroxScans {
+    /// Internal structure: locked hashset of `FeroxScan`s
+    pub scans: RwLock<Vec<Arc<FeroxScan>>>,
+
+    /// menu used for providing a way for users to cancel a scan
+    menu: Menu,
+
+    /// number of requests expected per scan (mirrors the same on Stats); used for initializing
+    /// progress bars and feroxscans
+    bar_length: Mutex<u64>,
+
+    /// whether or not the user passed --silent|--quiet on the command line
+    output_level: OutputLevel,
+
+    /// vector of extensions discovered and collected during scans
+    pub(crate) collected_extensions: RwLock<HashSet<String>>,
+}
+
+/// Serialize implementation for FeroxScans
+///
+/// purposefully skips menu attribute
+impl Serialize for FeroxScans {
+    /// Function that handles serialization of FeroxScans
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        match self.scans.read() {
+            Ok(scans) => {
+                let mut seq = serializer.serialize_seq(Some(scans.len() + 1))?;
+
+                for scan in scans.iter() {
+                    seq.serialize_element(scan).unwrap_or_default();
+                }
+                seq.end()
+            }
+            Err(_) => {
+                // if for some reason we can't unlock the RwLock, just write an empty list
+                let seq = serializer.serialize_seq(Some(0))?;
+                seq.end()
+            }
+        }
+    }
+}
+
+/// Implementation of `FeroxScans`
+impl FeroxScans {
+    /// given an OutputLevel, create a new FeroxScans object
+    pub fn new(output_level: OutputLevel) -> Self {
+        Self {
+            output_level,
+            ..Default::default()
+        }
+    }
+
+    /// Add a `FeroxScan` to the internal container
+    ///
+    /// If the internal container did NOT contain the scan, true is returned; else false
+    pub fn insert(&self, scan: Arc<FeroxScan>) -> bool {
+        // If the container did contain the scan, set sentry to false
+        // If the container did not contain the scan, set sentry to true
+        let sentry = !self.contains(&scan.url);
+
+        if sentry {
+            // can't update the internal container while the scan itself is locked, so first
+            // lock the scan and check the container for the scan's presence, then add if
+            // not found
+            match self.scans.write() {
+                Ok(mut scans) => {
+                    scans.push(scan);
+                }
+                Err(e) => {
+                    log::warn!("FeroxScans' container's mutex is poisoned: {}", e);
+                    return false;
+                }
+            }
+        }
+
+        sentry
+    }
+
+    /// load serialized FeroxScan(s) and any previously collected extensions into this FeroxScans  
+    pub fn add_serialized_scans(&self, filename: &str, handles: Arc<Handles>) -> Result<()> {
+        log::trace!("enter: add_serialized_scans({})", filename);
+        let file = File::open(filename)?;
+
+        let reader = BufReader::new(file);
+        let state: serde_json::Value = serde_json::from_reader(reader)?;
+
+        if let Some(scans) = state.get("scans") {
+            if let Some(arr_scans) = scans.as_array() {
+                for scan in arr_scans {
+                    let mut deser_scan: FeroxScan =
+                        serde_json::from_value(scan.clone()).unwrap_or_default();
+
+                    if deser_scan.is_cancelled() {
+                        // if the scan was cancelled by the user, mark it as complete. This will
+                        // prevent the scan from being resumed as well as prevent the wordlist
+                        // from requesting it again
+                        if let Ok(mut guard) = deser_scan.status.lock() {
+                            *guard = ScanStatus::Complete;
+                        }
+                    }
+
+                    // FeroxScans gets -q value from config as usual; the FeroxScans themselves
+                    // rely on that value being passed in. If the user starts a scan without -q
+                    // and resumes the scan but adds -q, FeroxScan will not have the proper value
+                    // without the line below
+                    deser_scan.output_level = self.output_level;
+
+                    self.insert(Arc::new(deser_scan));
+                }
+            }
+        }
+
+        if let Some(extensions) = state.get("collected_extensions") {
+            if let Some(arr_exts) = extensions.as_array() {
+                if let Ok(mut guard) = self.collected_extensions.write() {
+                    for ext in arr_exts {
+                        let deser_ext: String =
+                            serde_json::from_value(ext.clone()).unwrap_or_default();
+
+                        guard.insert(deser_ext);
+                    }
+                }
+            }
+        }
+
+        if let Some(filters) = state.get("filters") {
+            if let Some(arr_filters) = filters.as_array() {
+                for filter in arr_filters {
+                    let final_filter: Box<dyn FeroxFilter> = if let Ok(deserialized) =
+                        serde_json::from_value::<RegexFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else if let Ok(deserialized) =
+                        serde_json::from_value::<WordsFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else if let Ok(deserialized) =
+                        serde_json::from_value::<WildcardFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else if let Ok(deserialized) =
+                        serde_json::from_value::<SizeFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else if let Ok(deserialized) =
+                        serde_json::from_value::<LinesFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else if let Ok(deserialized) =
+                        serde_json::from_value::<SimilarityFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else if let Ok(deserialized) =
+                        serde_json::from_value::<StatusCodeFilter>(filter.clone())
+                    {
+                        Box::new(deserialized)
+                    } else {
+                        Box::new(EmptyFilter {})
+                    };
+
+                    handles
+                        .filters
+                        .send(AddFilter(final_filter))
+                        .unwrap_or_default();
+                }
+            }
+        }
+
+        log::trace!("exit: add_serialized_scans");
+        Ok(())
+    }
+
+    /// Simple check for whether or not a FeroxScan is contained within the inner container based
+    /// on the given URL
+    pub fn contains(&self, url: &str) -> bool {
+        if let Ok(scans) = self.scans.read() {
+            let normalized = format!("{}/", url.trim_end_matches('/'));
+
+            for scan in scans.iter() {
+                if scan.normalized_url == normalized {
+                    return true;
+                }
+            }
+        }
+        false
+    }
+
+    /// Find and return a `FeroxScan` based on the given URL
+    pub fn get_scan_by_url(&self, url: &str) -> Option<Arc<FeroxScan>> {
+        if let Ok(guard) = self.scans.read() {
+            let normalized = format!("{}/", url.trim_end_matches('/'));
+
+            for scan in guard.iter() {
+                if scan.normalized_url == normalized {
+                    return Some(scan.clone());
+                }
+            }
+        }
+        None
+    }
+
+    pub fn get_base_scan_by_url(&self, url: &str) -> Option<Arc<FeroxScan>> {
+        log::trace!("enter: get_base_scan_by_url({})", url);
+
+        // rmatch_indices returns tuples in index, match form, i.e. (10, "/")
+        // with the furthest-right match in the first position in the vector
+        let matches: Vec<_> = url.rmatch_indices('/').collect();
+
+        // iterate from the furthest right matching index and check the given url from the
+        // start to the furthest-right '/' character. compare that slice to the urls associated
+        // with directory scans and return the first match, since it should be the 'deepest'
+        // match.
+        // Example:
+        //   url: http://shmocalhost/src/release/examples/stuff.php
+        //   scans:
+        //      http://shmocalhost/src/statistics
+        //      http://shmocalhost/src/banner
+        //      http://shmocalhost/src/release
+        //      http://shmocalhost/src/release/examples
+        //
+        //  returns: http://shmocalhost/src/release/examples
+        if let Ok(guard) = self.scans.read() {
+            for (idx, _) in &matches {
+                for scan in guard.iter() {
+                    let slice = url.index(0..*idx);
+                    if slice == scan.url || format!("{}/", slice).as_str() == scan.url {
+                        log::trace!("enter: get_base_scan_by_url -> {}", scan);
+                        return Some(scan.clone());
+                    }
+                }
+            }
+        }
+
+        log::trace!("enter: get_base_scan_by_url -> None");
+        None
+    }
+    /// add one to either 403 or 429 tracker in the scan related to the given url
+    pub fn increment_status_code(&self, url: &str, code: StatusCode) {
+        if let Some(scan) = self.get_base_scan_by_url(url) {
+            match code {
+                StatusCode::TOO_MANY_REQUESTS => {
+                    scan.add_429();
+                }
+                StatusCode::FORBIDDEN => {
+                    scan.add_403();
+                }
+                _ => {}
+            }
+        }
+    }
+
+    /// add one to either 403 or 429 tracker in the scan related to the given url
+    pub fn increment_error(&self, url: &str) {
+        if let Some(scan) = self.get_base_scan_by_url(url) {
+            scan.add_error();
+        }
+    }
+
+    /// Print all FeroxScans of type Directory
+    ///
+    /// Example:
+    ///   0: complete   https://10.129.45.20
+    ///   9: complete   https://10.129.45.20/images
+    ///  10: complete   https://10.129.45.20/assets
+    pub async fn display_scans(&self) {
+        let scans = {
+            // written this way in order to grab the vector and drop the lock immediately
+            // otherwise the spawned task that this is a part of is no longer Send due to
+            // the scan.task.lock().await below while the lock is held (RwLock is not Send)
+            self.scans
+                .read()
+                .expect("Could not acquire lock in display_scans")
+                .clone()
+        };
+
+        let mut printed = 0;
+
+        for (i, scan) in scans.iter().enumerate() {
+            if matches!(scan.scan_order, ScanOrder::Initial) || scan.task.try_lock().is_err() {
+                // original target passed in via either -u or --stdin
+                continue;
+            }
+
+            if matches!(scan.scan_type, ScanType::Directory) {
+                if printed == 0 {
+                    self.menu
+                        .println(&format!("{}:", style("Scans").bright().blue()));
+                }
+                // we're only interested in displaying directory scans, as those are
+                // the only ones that make sense to be stopped
+                let scan_msg = format!("{:3}: {}", i, scan);
+                self.menu.println(&scan_msg);
+                printed += 1;
+            }
+        }
+
+        if printed > 0 {
+            self.menu.print_border();
+        }
+    }
+
+    /// Given a list of indexes, cancel their associated FeroxScans
+    async fn cancel_scans(&self, indexes: Vec<usize>, force: bool) -> usize {
+        let menu_pause_duration = Duration::from_millis(SLEEP_DURATION);
+
+        let mut num_cancelled = 0_usize;
+
+        for num in indexes {
+            let selected = match self.scans.read() {
+                Ok(u_scans) => {
+                    // check if number provided is out of range
+                    if num >= u_scans.len() {
+                        // usize can't be negative, just need to handle exceeding bounds
+                        self.menu
+                            .println(&format!("The number {} is not a valid choice.", num));
+                        sleep(menu_pause_duration);
+                        continue;
+                    }
+                    u_scans.index(num).clone()
+                }
+                Err(..) => continue,
+            };
+
+            let input = if force {
+                'y'
+            } else {
+                self.menu.confirm_cancellation(&selected.url)
+            };
+
+            if input == 'y' || input == '\n' {
+                self.menu.println(&format!("Stopping {}...", selected.url));
+
+                selected
+                    .abort()
+                    .await
+                    .unwrap_or_else(|e| log::warn!("Could not cancel task: {}", e));
+
+                let pb = selected.progress_bar();
+                num_cancelled += pb.length() as usize - pb.position() as usize
+            } else {
+                self.menu.println("Ok, doing nothing...");
+            }
+
+            sleep(menu_pause_duration);
+        }
+
+        num_cancelled
+    }
+
+    fn display_filters(&self, handles: Arc<Handles>) {
+        let mut printed = 0;
+
+        if let Ok(guard) = handles.filters.data.filters.read() {
+            for (i, filter) in guard.iter().enumerate() {
+                if i == 0 {
+                    self.menu
+                        .println(&format!("{}:", style("Filters").bright().blue()));
+                }
+
+                let filter_msg = format!("{:3}: {}", i + 1, filter);
+                self.menu.println(&filter_msg);
+                printed += 1;
+            }
+
+            if printed > 0 {
+                self.menu.print_border();
+            }
+        }
+    }
+
+    /// CLI menu that allows for interactive cancellation of recursed-into directories
+    async fn interactive_menu(&self, handles: Arc<Handles>) -> Option<MenuCmdResult> {
+        self.menu.hide_progress_bars();
+        self.menu.clear_screen();
+        self.menu.print_header();
+        self.display_scans().await;
+        self.display_filters(handles.clone());
+        self.menu.print_footer();
+
+        let menu_cmd = if let Ok(line) = self.menu.term.read_line() {
+            self.menu.get_command_input_from_user(&line)
+        } else {
+            None
+        };
+
+        let result = match menu_cmd {
+            Some(MenuCmd::Cancel(indices, should_force)) => {
+                // cancel the things
+                let num_cancelled = self.cancel_scans(indices, should_force).await;
+                Some(MenuCmdResult::NumCancelled(num_cancelled))
+            }
+            Some(MenuCmd::AddUrl(url)) => Some(MenuCmdResult::Url(url)),
+            Some(MenuCmd::AddFilter(filter)) => Some(MenuCmdResult::Filter(filter)),
+            Some(MenuCmd::RemoveFilter(indices)) => {
+                handles
+                    .filters
+                    .send(Command::RemoveFilters(indices))
+                    .unwrap_or_default();
+                None
+            }
+            None => None,
+        };
+
+        self.menu.clear_screen();
+        self.menu.show_progress_bars();
+
+        result
+    }
+
+    /// prints all known responses that the scanner has already seen
+    pub fn print_known_responses(&self) {
+        if let Ok(mut responses) = RESPONSES.responses.write() {
+            for response in responses.iter_mut() {
+                if self.output_level != response.output_level {
+                    // set the output_level prior to printing the response to ensure that the
+                    // response's setting aligns with the overall configuration (since we're
+                    // calling this from a resumed state)
+                    response.output_level = self.output_level;
+                }
+                PROGRESS_PRINTER.println(response.as_str());
+            }
+        }
+    }
+
+    /// if a resumed scan is already complete, display a completed progress bar to the user
+    pub fn print_completed_bars(&self, bar_length: usize) -> Result<()> {
+        let bar_type = match self.output_level {
+            OutputLevel::Default => BarType::Message,
+            OutputLevel::Quiet => BarType::Quiet,
+            OutputLevel::Silent => return Ok(()), // fast exit when --silent was used
+        };
+
+        if let Ok(scans) = self.scans.read() {
+            for scan in scans.iter() {
+                if scan.is_complete() {
+                    // these scans are complete, and just need to be shown to the user
+                    let pb = add_bar(
+                        &scan.url,
+                        bar_length.try_into().unwrap_or_default(),
+                        bar_type,
+                    );
+                    pb.finish();
+                }
+            }
+        }
+        Ok(())
+    }
+
+    /// Forced the calling thread into a busy loop
+    ///
+    /// Every `SLEEP_DURATION` milliseconds, the function examines the result stored in `PAUSE_SCAN`
+    ///
+    /// When the value stored in `PAUSE_SCAN` becomes `false`, the function returns, exiting the busy
+    /// loop
+    pub async fn pause(
+        &self,
+        get_user_input: bool,
+        handles: Arc<Handles>,
+    ) -> Option<MenuCmdResult> {
+        // function uses tokio::time, not std
+
+        // local testing showed a pretty slow increase (less than linear) in CPU usage as # of
+        // concurrent scans rose when SLEEP_DURATION was set to 500, using that as the default for now
+        let mut interval = time::interval(time::Duration::from_millis(SLEEP_DURATION));
+        let mut command_result = None;
+
+        if INTERACTIVE_BARRIER.load(Ordering::Relaxed) == 0 {
+            INTERACTIVE_BARRIER.fetch_add(1, Ordering::Relaxed);
+
+            if get_user_input {
+                command_result = self.interactive_menu(handles).await;
+                PAUSE_SCAN.store(false, Ordering::Relaxed);
+                self.print_known_responses();
+            }
+        }
+
+        loop {
+            // first tick happens immediately, all others wait the specified duration
+            interval.tick().await;
+
+            if !PAUSE_SCAN.load(Ordering::Acquire) {
+                // PAUSE_SCAN is false, so we can exit the busy loop
+
+                if INTERACTIVE_BARRIER.load(Ordering::Relaxed) == 1 {
+                    INTERACTIVE_BARRIER.fetch_sub(1, Ordering::Relaxed);
+                }
+
+                log::trace!("exit: pause_scan -> {:?}", command_result);
+                return command_result;
+            }
+        }
+    }
+
+    /// set the bar length of FeroxScans
+    pub fn set_bar_length(&self, bar_length: u64) {
+        if let Ok(mut guard) = self.bar_length.lock() {
+            *guard = bar_length;
+        }
+    }
+
+    /// Given a url, create a new `FeroxScan` and add it to `FeroxScans`
+    ///
+    /// If `FeroxScans` did not already contain the scan, return true; otherwise return false
+    ///
+    /// Also return a reference to the new `FeroxScan`
+    pub(super) fn add_scan(
+        &self,
+        url: &str,
+        scan_type: ScanType,
+        scan_order: ScanOrder,
+    ) -> (bool, Arc<FeroxScan>) {
+        let bar_length = if let Ok(guard) = self.bar_length.lock() {
+            *guard
+        } else {
+            0
+        };
+
+        let bar = match scan_type {
+            ScanType::Directory => {
+                let bar_type = match self.output_level {
+                    OutputLevel::Default => BarType::Default,
+                    OutputLevel::Quiet => BarType::Quiet,
+                    OutputLevel::Silent => BarType::Hidden,
+                };
+
+                let progress_bar = add_bar(url, bar_length, bar_type);
+
+                progress_bar.reset_elapsed();
+
+                Some(progress_bar)
+            }
+            ScanType::File => None,
+        };
+
+        let ferox_scan = FeroxScan::new(
+            url,
+            scan_type,
+            scan_order,
+            bar_length,
+            self.output_level,
+            bar,
+        );
+
+        // If the set did not contain the scan, true is returned.
+        // If the set did contain the scan, false is returned.
+        let response = self.insert(ferox_scan.clone());
+
+        (response, ferox_scan)
+    }
+
+    /// Given a url, create a new `FeroxScan` and add it to `FeroxScans` as a Directory Scan
+    ///
+    /// If `FeroxScans` did not already contain the scan, return true; otherwise return false
+    ///
+    /// Also return a reference to the new `FeroxScan`
+    pub fn add_directory_scan(&self, url: &str, scan_order: ScanOrder) -> (bool, Arc<FeroxScan>) {
+        let normalized = format!("{}/", url.trim_end_matches('/'));
+        self.add_scan(&normalized, ScanType::Directory, scan_order)
+    }
+
+    /// Given a url, create a new `FeroxScan` and add it to `FeroxScans` as a File Scan
+    ///
+    /// If `FeroxScans` did not already contain the scan, return true; otherwise return false
+    ///
+    /// Also return a reference to the new `FeroxScan`
+    pub fn add_file_scan(&self, url: &str, scan_order: ScanOrder) -> (bool, Arc<FeroxScan>) {
+        self.add_scan(url, ScanType::File, scan_order)
+    }
+
+    /// small helper to determine whether any scans are active or not
+    pub fn has_active_scans(&self) -> bool {
+        if let Ok(guard) = self.scans.read() {
+            for scan in guard.iter() {
+                if scan.is_active() {
+                    return true;
+                }
+            }
+        }
+        false
+    }
+
+    /// Retrieve all active scans
+    pub fn get_active_scans(&self) -> Vec<Arc<FeroxScan>> {
+        let mut scans = vec![];
+
+        if let Ok(guard) = self.scans.read() {
+            for scan in guard.iter() {
+                if !scan.is_active() {
+                    continue;
+                }
+                scans.push(scan.clone());
+            }
+        }
+        scans
+    }
+
+    /// given an extension, add it to `collected_extensions` if all constraints are met
+    /// returns `true` if an extension was added, `false` otherwise
+    pub fn add_discovered_extension(&self, extension: String) -> bool {
+        log::trace!("enter: add_discovered_extension({})", extension);
+        let mut extension_added = false;
+
+        // note: the filter by --dont-collect happens in the event handler, since it has access
+        // to a Handles object form which it can check the config value. additionally, the check
+        // against --extensions is performed there for the same reason
+
+        if let Ok(extensions) = self.collected_extensions.read() {
+            // quicker to allow most to read and return and then reopen for write if necessary
+            if extensions.contains(&extension) {
+                return extension_added;
+            }
+        }
+
+        if let Ok(mut extensions) = self.collected_extensions.write() {
+            log::info!("discovered new extension: {}", extension);
+            extensions.insert(extension);
+            extension_added = true;
+        }
+
+        log::trace!("exit: add_discovered_extension -> {}", extension_added);
+        extension_added
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    /// unknown extension should be added to collected_extensions
+    fn unknown_extension_is_added_to_collected_extensions() {
+        let scans = FeroxScans::new(OutputLevel::Default);
+
+        assert_eq!(0, scans.collected_extensions.read().unwrap().len());
+
+        let added = scans.add_discovered_extension(String::from("js"));
+
+        assert!(added);
+        assert_eq!(1, scans.collected_extensions.read().unwrap().len());
+    }
+
+    #[test]
+    /// known extension should not be added to collected_extensions
+    fn known_extension_is_added_to_collected_extensions() {
+        let scans = FeroxScans::new(OutputLevel::Default);
+        scans
+            .collected_extensions
+            .write()
+            .unwrap()
+            .insert(String::from("js"));
+
+        assert_eq!(1, scans.collected_extensions.read().unwrap().len());
+
+        let added = scans.add_discovered_extension(String::from("js"));
+
+        assert!(!added);
+        assert_eq!(1, scans.collected_extensions.read().unwrap().len());
+    }
+}
--- a/src/scan_manager/state.rs
+++ b/src/scan_manager/state.rs
@@ -0,0 +1,69 @@
+use super::*;
+use crate::filters::FeroxFilters;
+use crate::{config::Configuration, statistics::Stats, traits::FeroxSerialize, utils::fmt_err};
+use anyhow::{Context, Result};
+use serde::Serialize;
+use std::collections::HashSet;
+use std::sync::Arc;
+
+/// Data container for (de)?serialization of multiple items
+#[derive(Serialize, Debug)]
+pub struct FeroxState {
+    /// Known scans
+    scans: Arc<FeroxScans>,
+
+    /// Current running config
+    config: Arc<Configuration>,
+
+    /// Known responses
+    responses: &'static FeroxResponses,
+
+    /// Gathered statistics
+    statistics: Arc<Stats>,
+
+    /// collected extensions
+    collected_extensions: HashSet<String>,
+
+    /// runtime filters, as they may differ from original config
+    filters: Arc<FeroxFilters>,
+}
+
+/// implementation of FeroxState
+impl FeroxState {
+    /// create new FeroxState object
+    pub fn new(
+        scans: Arc<FeroxScans>,
+        config: Arc<Configuration>,
+        responses: &'static FeroxResponses,
+        statistics: Arc<Stats>,
+        filters: Arc<FeroxFilters>,
+    ) -> Self {
+        let collected_extensions = match scans.collected_extensions.read() {
+            Ok(extensions) => extensions.clone(),
+            Err(_) => HashSet::new(),
+        };
+
+        Self {
+            scans,
+            config,
+            responses,
+            statistics,
+            collected_extensions,
+            filters,
+        }
+    }
+}
+
+/// FeroxSerialize implementation for FeroxState
+impl FeroxSerialize for FeroxState {
+    /// Simply return debug format of FeroxState to satisfy as_str
+    fn as_str(&self) -> String {
+        format!("{:?}", self)
+    }
+
+    /// Simple call to produce a JSON string using the given FeroxState
+    fn as_json(&self) -> Result<String> {
+        serde_json::to_string(&self)
+            .with_context(|| fmt_err("Could not convert scan's running state to JSON"))
+    }
+}
--- a/src/scan_manager/tests.rs
+++ b/src/scan_manager/tests.rs
@@ -0,0 +1,780 @@
+use super::*;
+use crate::filters::{
+    FeroxFilters, LinesFilter, RegexFilter, SimilarityFilter, SizeFilter, StatusCodeFilter,
+    WordsFilter,
+};
+use crate::{
+    config::{Configuration, OutputLevel},
+    event_handlers::Handles,
+    response::FeroxResponse,
+    scanner::RESPONSES,
+    statistics::Stats,
+    traits::FeroxSerialize,
+    SIMILARITY_THRESHOLD, SLEEP_DURATION, VERSION,
+};
+use indicatif::ProgressBar;
+use predicates::prelude::*;
+use regex::Regex;
+use std::sync::{atomic::Ordering, Arc};
+use std::thread::sleep;
+use std::time::Instant;
+use tokio::time::{self, Duration};
+
+#[test]
+/// test that ScanType's default is File
+fn default_scantype_is_file() {
+    match ScanType::default() {
+        ScanType::File => {}
+        ScanType::Directory => panic!(),
+    }
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// tests that pause_scan pauses execution and releases execution when PAUSE_SCAN is toggled
+/// the spinner used during the test has had .finish_and_clear called on it, meaning that
+/// a new one will be created, taking the if branch within the function
+async fn scanner_pause_scan_with_finished_spinner() {
+    let now = time::Instant::now();
+    let urls = FeroxScans::default();
+    let handles = Arc::new(Handles::for_testing(None, None).0);
+
+    PAUSE_SCAN.store(true, Ordering::Relaxed);
+
+    let expected = time::Duration::from_secs(2);
+
+    tokio::spawn(async move {
+        time::sleep(expected).await;
+        PAUSE_SCAN.store(false, Ordering::Relaxed);
+    });
+
+    urls.pause(false, handles).await;
+
+    assert!(now.elapsed() > expected);
+}
+
+#[test]
+/// add an unknown url to the hashset, expect true
+fn add_url_to_list_of_scanned_urls_with_unknown_url() {
+    let urls = FeroxScans::default();
+    let url = "http://unknown_url";
+    let (result, _scan) = urls.add_scan(url, ScanType::Directory, ScanOrder::Latest);
+    assert!(result);
+}
+
+#[test]
+/// add a known url to the hashset, with a trailing slash, expect false
+fn add_url_to_list_of_scanned_urls_with_known_url() {
+    let urls = FeroxScans::default();
+    let pb = ProgressBar::new(1);
+    let url = "http://unknown_url/";
+
+    let scan = FeroxScan::new(
+        url,
+        ScanType::Directory,
+        ScanOrder::Latest,
+        pb.length(),
+        OutputLevel::Default,
+        Some(pb),
+    );
+
+    assert!(urls.insert(scan));
+
+    let (result, _scan) = urls.add_scan(url, ScanType::Directory, ScanOrder::Latest);
+
+    assert!(!result);
+}
+
+#[test]
+/// stop_progress_bar should stop the progress bar
+fn stop_progress_bar_stops_bar() {
+    let pb = ProgressBar::new(1);
+    let url = "http://unknown_url/";
+
+    let scan = FeroxScan::new(
+        url,
+        ScanType::Directory,
+        ScanOrder::Latest,
+        pb.length(),
+        OutputLevel::Default,
+        Some(pb),
+    );
+
+    assert!(!scan
+        .progress_bar
+        .lock()
+        .unwrap()
+        .as_ref()
+        .unwrap()
+        .is_finished());
+
+    scan.stop_progress_bar();
+
+    assert!(scan
+        .progress_bar
+        .lock()
+        .unwrap()
+        .as_ref()
+        .unwrap()
+        .is_finished());
+}
+
+#[test]
+/// add a known url to the hashset, without a trailing slash, expect false
+fn add_url_to_list_of_scanned_urls_with_known_url_without_slash() {
+    let urls = FeroxScans::default();
+    let url = "http://unknown_url";
+
+    let scan = FeroxScan::new(
+        url,
+        ScanType::File,
+        ScanOrder::Latest,
+        0,
+        OutputLevel::Default,
+        None,
+    );
+
+    assert!(urls.insert(scan));
+
+    let (result, _scan) = urls.add_scan(url, ScanType::File, ScanOrder::Latest);
+
+    assert!(!result);
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// just increasing coverage, no real expectations
+async fn call_display_scans() {
+    let urls = FeroxScans::default();
+    let pb = ProgressBar::new(1);
+    let pb_two = ProgressBar::new(2);
+    let url = "http://unknown_url/";
+    let url_two = "http://unknown_url/fa";
+    let scan = FeroxScan::new(
+        url,
+        ScanType::Directory,
+        ScanOrder::Latest,
+        pb.length(),
+        OutputLevel::Default,
+        Some(pb),
+    );
+    let scan_two = FeroxScan::new(
+        url_two,
+        ScanType::Directory,
+        ScanOrder::Latest,
+        pb_two.length(),
+        OutputLevel::Default,
+        Some(pb_two),
+    );
+
+    scan_two.finish().unwrap(); // one complete, one incomplete
+    scan_two
+        .set_task(tokio::spawn(async move {
+            sleep(Duration::from_millis(SLEEP_DURATION));
+        }))
+        .await
+        .unwrap();
+
+    assert!(urls.insert(scan));
+    assert!(urls.insert(scan_two));
+
+    urls.display_scans().await;
+}
+
+#[test]
+/// ensure that PartialEq compares FeroxScan.id fields
+fn partial_eq_compares_the_id_field() {
+    let url = "http://unknown_url/";
+    let scan = FeroxScan::new(
+        url,
+        ScanType::Directory,
+        ScanOrder::Latest,
+        0,
+        OutputLevel::Default,
+        None,
+    );
+    let scan_two = FeroxScan::new(
+        url,
+        ScanType::Directory,
+        ScanOrder::Latest,
+        0,
+        OutputLevel::Default,
+        None,
+    );
+
+    assert!(!scan.eq(&scan_two));
+
+    let scan_two = scan.clone();
+
+    assert!(scan.eq(&scan_two));
+}
+
+#[test]
+/// show that a new progress bar is created if one doesn't exist
+fn ferox_scan_get_progress_bar_when_none_is_set() {
+    let scan = FeroxScan::default();
+
+    assert!(scan.progress_bar.lock().unwrap().is_none()); // no pb exists
+
+    let pb = scan.progress_bar();
+
+    assert!(scan.progress_bar.lock().unwrap().is_some()); // new pb created
+    assert!(!pb.is_finished()) // not finished
+}
+
+#[test]
+/// given a JSON entry representing a FeroxScan, test that it deserializes into the proper type
+/// with the right attributes
+fn ferox_scan_deserialize() {
+    let fs_json = r#"{"id":"057016a14769414aac9a7a62707598cb","url":"https://spiritanimal.com","scan_type":"Directory","status":"Complete"}"#;
+    let fs_json_two = r#"{"id":"057016a14769414aac9a7a62707598cb","url":"https://spiritanimal.com","scan_type":"Not Correct","status":"Cancelled"}"#;
+    let fs_json_three = r#"{"id":"057016a14769414aac9a7a62707598cb","url":"https://spiritanimal.com","scan_type":"Not Correct","status":"","num_requests":42}"#;
+
+    let fs: FeroxScan = serde_json::from_str(fs_json).unwrap();
+    let fs_two: FeroxScan = serde_json::from_str(fs_json_two).unwrap();
+    let fs_three: FeroxScan = serde_json::from_str(fs_json_three).unwrap();
+    assert_eq!(fs.url, "https://spiritanimal.com");
+
+    match fs.scan_type {
+        ScanType::Directory => {}
+        ScanType::File => {
+            panic!();
+        }
+    }
+    match fs_two.scan_type {
+        ScanType::Directory => {
+            panic!();
+        }
+        ScanType::File => {}
+    }
+
+    match *fs.progress_bar.lock().unwrap() {
+        None => {}
+        Some(_) => {
+            panic!();
+        }
+    }
+    assert!(matches!(*fs.status.lock().unwrap(), ScanStatus::Complete));
+    assert!(matches!(
+        *fs_two.status.lock().unwrap(),
+        ScanStatus::Cancelled
+    ));
+    assert!(matches!(
+        *fs_three.status.lock().unwrap(),
+        ScanStatus::NotStarted
+    ));
+    assert_eq!(fs_three.num_requests, 42);
+    assert_eq!(fs.id, "057016a14769414aac9a7a62707598cb");
+}
+
+#[test]
+/// given a FeroxScan, test that it serializes into the proper JSON entry
+fn ferox_scan_serialize() {
+    let fs = FeroxScan::new(
+        "https://spiritanimal.com",
+        ScanType::Directory,
+        ScanOrder::Latest,
+        0,
+        OutputLevel::Default,
+        None,
+    );
+    let fs_json = format!(
+        r#"{{"id":"{}","url":"https://spiritanimal.com","normalized_url":"https://spiritanimal.com/","scan_type":"Directory","status":"NotStarted","num_requests":0}}"#,
+        fs.id
+    );
+    assert_eq!(fs_json, serde_json::to_string(&*fs).unwrap());
+}
+
+#[test]
+/// given a FeroxScans, test that it serializes into the proper JSON entry
+fn ferox_scans_serialize() {
+    let ferox_scan = FeroxScan::new(
+        "https://spiritanimal.com",
+        ScanType::Directory,
+        ScanOrder::Latest,
+        0,
+        OutputLevel::Default,
+        None,
+    );
+    let ferox_scans = FeroxScans::default();
+    let ferox_scans_json = format!(
+        r#"[{{"id":"{}","url":"https://spiritanimal.com","normalized_url":"https://spiritanimal.com/","scan_type":"Directory","status":"NotStarted","num_requests":0}}]"#,
+        ferox_scan.id
+    );
+    ferox_scans.scans.write().unwrap().push(ferox_scan);
+    assert_eq!(
+        ferox_scans_json,
+        serde_json::to_string(&ferox_scans).unwrap()
+    );
+}
+
+#[test]
+/// given a FeroxResponses, test that it serializes into the proper JSON entry
+fn ferox_responses_serialize() {
+    let json_response = r#"{"type":"response","url":"https://nerdcore.com/css","original_url":"https://nerdcore.com","path":"/css","wildcard":true,"status":301,"method":"GET","content_length":173,"line_count":10,"word_count":16,"headers":{"server":"nginx/1.16.1"},"extension":""}"#;
+    let response: FeroxResponse = serde_json::from_str(json_response).unwrap();
+
+    let responses = FeroxResponses::default();
+    responses.insert(response);
+    // responses has a response now
+
+    // serialized should be a list of responses
+    let expected = format!("[{}]", json_response);
+
+    let serialized = serde_json::to_string(&responses).unwrap();
+    assert_eq!(expected, serialized);
+}
+
+#[test]
+/// given a FeroxResponse, test that it serializes into the proper JSON entry
+fn ferox_response_serialize_and_deserialize() {
+    // deserialize
+    let json_response = r#"{"type":"response","url":"https://nerdcore.com/css","original_url":"https://nerdcore.com","path":"/css","wildcard":true,"status":301,"method":"GET","content_length":173,"line_count":10,"word_count":16,"headers":{"server":"nginx/1.16.1"},"extension":""}"#;
+    let response: FeroxResponse = serde_json::from_str(json_response).unwrap();
+
+    assert_eq!(response.url().as_str(), "https://nerdcore.com/css");
+    assert_eq!(response.url().path(), "/css");
+    assert!(response.wildcard());
+    assert_eq!(response.status().as_u16(), 301);
+    assert_eq!(response.content_length(), 173);
+    assert_eq!(response.line_count(), 10);
+    assert_eq!(response.word_count(), 16);
+    assert_eq!(response.headers().get("server").unwrap(), "nginx/1.16.1");
+
+    // serialize, however, this can fail when headers are out of order
+    let new_json = serde_json::to_string(&response).unwrap();
+    assert_eq!(json_response, new_json);
+}
+
+#[test]
+/// test FeroxSerialize implementation of FeroxState
+fn feroxstates_feroxserialize_implementation() {
+    let ferox_scan = FeroxScan::new(
+        "https://spiritanimal.com",
+        ScanType::Directory,
+        ScanOrder::Latest,
+        0,
+        OutputLevel::Default,
+        None,
+    );
+    let ferox_scans = FeroxScans::default();
+    let saved_id = ferox_scan.id.clone();
+
+    ferox_scans.insert(ferox_scan);
+
+    ferox_scans
+        .collected_extensions
+        .write()
+        .unwrap()
+        .insert(String::from("php"));
+
+    let mut config = Configuration::new().unwrap();
+
+    config.collect_extensions = true;
+
+    let stats = Arc::new(Stats::new(config.json));
+
+    let json_response = r#"{"type":"response","url":"https://nerdcore.com/css","path":"/css","wildcard":true,"status":301,"content_length":173,"line_count":10,"word_count":16,"headers":{"server":"nginx/1.16.1"},"extension":""}"#;
+    let response: FeroxResponse = serde_json::from_str(json_response).unwrap();
+    RESPONSES.insert(response);
+
+    let filters = FeroxFilters::default();
+    filters
+        .push(Box::new(StatusCodeFilter { filter_code: 100 }))
+        .unwrap();
+    filters
+        .push(Box::new(WordsFilter { word_count: 200 }))
+        .unwrap();
+    filters
+        .push(Box::new(SizeFilter {
+            content_length: 300,
+        }))
+        .unwrap();
+    filters
+        .push(Box::new(LinesFilter { line_count: 400 }))
+        .unwrap();
+    filters
+        .push(Box::new(RegexFilter {
+            raw_string: ".*".to_string(),
+            compiled: Regex::new(".*").unwrap(),
+        }))
+        .unwrap();
+    filters
+        .push(Box::new(SimilarityFilter {
+            hash: "3:YKEpn:Yfp".to_string(),
+            threshold: SIMILARITY_THRESHOLD,
+            original_url: "http://localhost:12345/".to_string(),
+        }))
+        .unwrap();
+
+    let ferox_state = FeroxState::new(
+        Arc::new(ferox_scans),
+        Arc::new(config),
+        &RESPONSES,
+        stats,
+        Arc::new(filters),
+    );
+
+    let expected_strs = predicates::str::contains("scans: FeroxScans").and(
+        predicate::str::contains("config: Configuration")
+            .and(predicate::str::contains("responses: FeroxResponses"))
+            .and(predicate::str::contains("nerdcore.com"))
+            .and(predicate::str::contains("/css"))
+            .and(predicate::str::contains("https://spiritanimal.com"))
+            .and(predicate::str::contains("php")),
+    );
+
+    assert!(expected_strs.eval(&ferox_state.as_str()));
+
+    let json_state = ferox_state.as_json().unwrap();
+
+    println!("echo '{}'|jq", json_state); // for debugging, if the test fails, can see what's going on
+
+    for expected in [
+        r#""scans""#,
+        &format!(r#""id":"{}""#, saved_id),
+        r#""url":"https://spiritanimal.com""#,
+        r#""scan_type":"Directory""#,
+        r#""status":"NotStarted""#,
+        r#""num_requests":0"#,
+        r#""config""#,
+        r#""type":"configuration""#,
+        r#""wordlist":"/usr/share/seclists/Discovery/Web-Content/raft-medium-directories.txt""#,
+        r#""config""#,
+        r#""proxy":"""#,
+        r#""replay_proxy":"""#,
+        r#""target_url":"""#,
+        r#""status_codes":[200,204,301,302,307,308,401,403,405,500]"#,
+        r#""replay_codes":[200,204,301,302,307,308,401,403,405,500]"#,
+        r#""filter_status":[]"#,
+        r#""threads":50"#,
+        r#""timeout":7"#,
+        r#""verbosity":0"#,
+        r#""silent":false"#,
+        r#""quiet":false"#,
+        r#""auto_bail":false"#,
+        r#""auto_tune":false"#,
+        r#""force_recursion":false"#,
+        r#""json":false"#,
+        r#""output":"""#,
+        r#""debug_log":"""#,
+        &format!(r#""user_agent":"feroxbuster/{}""#, VERSION),
+        r#""random_agent":false"#,
+        r#""redirects":false"#,
+        r#""insecure":false"#,
+        r#""extensions":[]"#,
+        r#""methods":["GET"],"#,
+        r#""data":[]"#,
+        r#""headers""#,
+        r#""queries":[]"#,
+        r#""no_recursion":false"#,
+        r#""extract_links":false"#,
+        r#""add_slash":false"#,
+        r#""stdin":false"#,
+        r#""depth":4"#,
+        r#""scan_limit":0"#,
+        r#""parallel":0"#,
+        r#""rate_limit":0"#,
+        r#""filter_size":[]"#,
+        r#""filter_line_count":[]"#,
+        r#""filter_word_count":[]"#,
+        r#""filter_regex":[]"#,
+        r#""dont_filter":false"#,
+        r#""resumed":false"#,
+        r#""resume_from":"""#,
+        r#""save_state":false"#,
+        r#""time_limit":"""#,
+        r#""filter_similar":[]"#,
+        r#""url_denylist":[]"#,
+        r#""responses""#,
+        r#""type":"response""#,
+        r#""url":"https://nerdcore.com/css""#,
+        r#""path":"/css""#,
+        r#""wildcard":true"#,
+        r#""status":301"#,
+        r#""method":"GET""#,
+        r#""content_length":173"#,
+        r#""line_count":10"#,
+        r#""word_count":16"#,
+        r#""headers""#,
+        r#""server":"nginx/1.16.1"#,
+        r#""collect_extensions":true"#,
+        r#""collect_backups":false"#,
+        r#""collect_words":false"#,
+        r#""filters":[{"filter_code":100},{"word_count":200},{"content_length":300},{"line_count":400},{"compiled":".*","raw_string":".*"},{"hash":"3:YKEpn:Yfp","threshold":95,"original_url":"http://localhost:12345/"}]"#,
+        r#""collected_extensions":["php"]"#,
+        r#""dont_collect":["tif","tiff","ico","cur","bmp","webp","svg","png","jpg","jpeg","jfif","gif","avif","apng","pjpeg","pjp","mov","wav","mpg","mpeg","mp3","mp4","m4a","m4p","m4v","ogg","webm","ogv","oga","flac","aac","3gp","css","zip","xls","xml","gz","tgz"]"#,
+    ]
+    .iter()
+    {
+        assert!(
+            predicates::str::contains(*expected).eval(&json_state)
+        );
+    }
+}
+
+#[should_panic]
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// call start_max_time_thread with a valid timespec, expect a panic, but only after a certain
+/// number of seconds
+async fn start_max_time_thread_panics_after_delay() {
+    let now = time::Instant::now();
+    let delay = time::Duration::new(3, 0);
+
+    let config = Configuration {
+        time_limit: String::from("3s"),
+        ..Default::default()
+    };
+
+    let handles = Arc::new(Handles::for_testing(None, Some(Arc::new(config))).0);
+
+    start_max_time_thread(handles).await;
+
+    assert!(now.elapsed() > delay);
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// call start_max_time_thread with a timespec that's too large to be parsed correctly, expect
+/// immediate return and no panic, as the sigint handler is never called
+async fn start_max_time_thread_returns_immediately_with_too_large_input() {
+    let now = time::Instant::now();
+    let delay = time::Duration::new(1, 0);
+    let config = Configuration {
+        time_limit: String::from("18446744073709551616m"),
+        ..Default::default()
+    };
+
+    let handles = Arc::new(Handles::for_testing(None, Some(Arc::new(config))).0);
+
+    // pub const MAX: usize = usize::MAX; // 18_446_744_073_709_551_615usize
+    start_max_time_thread(handles).await; // can't fit in dest u64
+
+    assert!(now.elapsed() < delay); // assuming function call will take less than 1second
+}
+
+#[test]
+/// coverage for FeroxScan's Display implementation
+fn feroxscan_display() {
+    let scan = FeroxScan {
+        id: "".to_string(),
+        url: String::from("http://localhost"),
+        normalized_url: String::from("http://localhost/"),
+        scan_order: ScanOrder::Latest,
+        scan_type: Default::default(),
+        num_requests: 0,
+        start_time: Instant::now(),
+        output_level: OutputLevel::Default,
+        status_403s: Default::default(),
+        status_429s: Default::default(),
+        status: Default::default(),
+        task: tokio::sync::Mutex::new(None),
+        progress_bar: std::sync::Mutex::new(None),
+        errors: Default::default(),
+    };
+
+    let not_started = format!("{}", scan);
+
+    assert!(predicate::str::contains("not started")
+        .and(predicate::str::contains("localhost"))
+        .eval(&not_started));
+
+    scan.set_status(ScanStatus::Complete).unwrap();
+    let complete = format!("{}", scan);
+    assert!(predicate::str::contains("complete")
+        .and(predicate::str::contains("localhost"))
+        .eval(&complete));
+
+    scan.set_status(ScanStatus::Cancelled).unwrap();
+    let cancelled = format!("{}", scan);
+    assert!(predicate::str::contains("cancelled")
+        .and(predicate::str::contains("localhost"))
+        .eval(&cancelled));
+
+    scan.set_status(ScanStatus::Running).unwrap();
+    let running = format!("{}", scan);
+    assert!(predicate::str::contains("running")
+        .and(predicate::str::contains("localhost"))
+        .eval(&running));
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 1)]
+/// call FeroxScan::abort, ensure status becomes cancelled
+async fn ferox_scan_abort() {
+    let scan = FeroxScan {
+        id: "".to_string(),
+        url: String::from("http://localhost"),
+        normalized_url: String::from("http://localhost/"),
+        scan_order: ScanOrder::Latest,
+        scan_type: Default::default(),
+        num_requests: 0,
+        start_time: Instant::now(),
+        output_level: OutputLevel::Default,
+        status_403s: Default::default(),
+        status_429s: Default::default(),
+        status: std::sync::Mutex::new(ScanStatus::Running),
+        task: tokio::sync::Mutex::new(Some(tokio::spawn(async move {
+            sleep(Duration::from_millis(SLEEP_DURATION * 2));
+        }))),
+        progress_bar: std::sync::Mutex::new(None),
+        errors: Default::default(),
+    };
+
+    scan.abort().await.unwrap();
+
+    assert!(matches!(
+        *scan.status.lock().unwrap(),
+        ScanStatus::Cancelled
+    ));
+}
+
+#[test]
+/// call a few menu functions for coverage's sake
+///
+/// there's not a trivial way to test these programmatically (at least i'm too lazy rn to do it)
+/// and their correctness can be verified easily manually; just calling for now
+fn menu_print_header_and_footer() {
+    let menu = Menu::new();
+    let menu_cmd_1 = MenuCmd::AddUrl(String::from("http://localhost"));
+    let menu_cmd_2 = MenuCmd::Cancel(vec![0], false);
+    let menu_cmd_res_1 = MenuCmdResult::Url(String::from("http://localhost"));
+    let menu_cmd_res_2 = MenuCmdResult::NumCancelled(2);
+    println!(
+        "{:?}{:?}{:?}{:?}",
+        menu_cmd_1, menu_cmd_2, menu_cmd_res_1, menu_cmd_res_2
+    );
+    menu.clear_screen();
+    menu.print_header();
+    menu.print_footer();
+    menu.hide_progress_bars();
+    menu.show_progress_bars();
+}
+
+/// ensure command parsing from user input results int he correct MenuCmd returned
+#[test]
+fn menu_get_command_input_from_user_returns_cancel() {
+    let menu = Menu::new();
+
+    for (idx, cmd) in ["cancel", "Cancel", "c", "C"].iter().enumerate() {
+        let force = idx % 2 == 0;
+
+        let full_cmd = if force {
+            format!("{} -f {}\n", cmd, idx)
+        } else {
+            format!("{} {}\n", cmd, idx)
+        };
+
+        let result = menu.get_command_input_from_user(&full_cmd).unwrap();
+
+        assert!(matches!(result, MenuCmd::Cancel(_, _)));
+
+        if let MenuCmd::Cancel(canx_list, ret_force) = result {
+            if idx == 0 {
+                assert!(canx_list.is_empty());
+            } else {
+                assert_eq!(canx_list, vec![idx]);
+            }
+            assert_eq!(force, ret_force);
+        }
+    }
+}
+
+/// ensure command parsing from user input results int he correct MenuCmd returned
+#[test]
+fn menu_get_command_input_from_user_returns_add() {
+    let menu = Menu::new();
+
+    for cmd in ["add", "Addd", "a", "A", "None"] {
+        let test_url = "http://happyfuntimes.commmm";
+        let full_cmd = format!("{} {}\n", cmd, test_url);
+
+        if cmd != "None" {
+            let result = menu.get_command_input_from_user(&full_cmd).unwrap();
+            assert!(matches!(result, MenuCmd::AddUrl(_)));
+
+            if let MenuCmd::AddUrl(url) = result {
+                assert_eq!(url, test_url);
+            }
+        } else {
+            assert!(menu.get_command_input_from_user(&full_cmd).is_none());
+        };
+    }
+}
+
+#[test]
+/// ensure spaces are trimmed and numbers are returned from split_to_nums
+fn split_to_nums_is_correct() {
+    let menu = Menu::new();
+
+    let nums = menu.split_to_nums("1, 3,      4, 7 -     12, 10-10, 10-11, 9-12, 12-6, -1, 4-");
+
+    assert_eq!(nums, vec![1, 3, 4, 7, 8, 9, 10, 11, 12]);
+    assert_eq!(menu.split_to_nums("9-12"), vec![9, 10, 11, 12]);
+    assert!(menu.split_to_nums("-12").is_empty());
+    assert!(menu.split_to_nums("12-").is_empty());
+    assert!(menu.split_to_nums("\n").is_empty());
+}
+
+#[test]
+/// given a deep url, find the correct scan
+fn get_base_scan_by_url_finds_correct_scan() {
+    let urls = FeroxScans::default();
+    let url = "http://localhost";
+    let url1 = "http://localhost/stuff";
+    let url2 = "http://shlocalhost/stuff/things";
+    let url3 = "http://shlocalhost/stuff/things/mostuff";
+    let (_, scan) = urls.add_scan(url, ScanType::Directory, ScanOrder::Latest);
+    let (_, scan1) = urls.add_scan(url1, ScanType::Directory, ScanOrder::Latest);
+    let (_, scan2) = urls.add_scan(url2, ScanType::Directory, ScanOrder::Latest);
+    let (_, scan3) = urls.add_scan(url3, ScanType::Directory, ScanOrder::Latest);
+
+    assert_eq!(
+        urls.get_base_scan_by_url("http://localhost/things.php")
+            .unwrap()
+            .id,
+        scan.id
+    );
+    assert_eq!(
+        urls.get_base_scan_by_url("http://localhost/stuff/things.php")
+            .unwrap()
+            .id,
+        scan1.id
+    );
+    assert_eq!(
+        urls.get_base_scan_by_url("http://shlocalhost/stuff/things/mostuff.php")
+            .unwrap()
+            .id,
+        scan2.id
+    );
+    assert_eq!(
+        urls.get_base_scan_by_url("http://shlocalhost/stuff/things/mostuff/mothings.php")
+            .unwrap()
+            .id,
+        scan3.id
+    );
+}
+
+#[test]
+/// given a shallow url without a trailing slash, find the correct scan
+fn get_base_scan_by_url_finds_correct_scan_without_trailing_slash() {
+    let urls = FeroxScans::default();
+    let url = "http://localhost";
+    let (_, scan) = urls.add_scan(url, ScanType::Directory, ScanOrder::Latest);
+    assert_eq!(
+        urls.get_base_scan_by_url("http://localhost/BKPMiherrortBPKcw")
+            .unwrap()
+            .id,
+        scan.id
+    );
+}
+
+#[test]
+/// given a shallow url with a trailing slash, find the correct scan
+fn get_base_scan_by_url_finds_correct_scan_with_trailing_slash() {
+    let urls = FeroxScans::default();
+    let url = "http://127.0.0.1:41971/";
+    let (_, scan) = urls.add_scan(url, ScanType::Directory, ScanOrder::Latest);
+    assert_eq!(
+        urls.get_base_scan_by_url("http://127.0.0.1:41971/BKPMiherrortBPKcw")
+            .unwrap()
+            .id,
+        scan.id
+    );
+}
--- a/src/scan_manager/utils.rs
+++ b/src/scan_manager/utils.rs
@@ -0,0 +1,92 @@
+#[cfg(not(test))]
+use crate::event_handlers::TermInputHandler;
+use crate::{
+    config::Configuration, event_handlers::Handles, parser::TIMESPEC_REGEX, scanner::RESPONSES,
+};
+
+use std::{fs::File, io::BufReader, sync::Arc};
+use tokio::time;
+
+/// Given a string representing some number of seconds, minutes, hours, or days, convert
+/// that representation to seconds and then wait for those seconds to elapse.  Once that period
+/// of time has elapsed, kill all currently running scans and dump a state file to disk that can
+/// be used to resume any unfinished scan.
+pub async fn start_max_time_thread(handles: Arc<Handles>) {
+    log::trace!("enter: start_max_time_thread({:?})", handles);
+
+    // as this function has already made it through the parser, which calls is_match on
+    // the value passed to --time-limit using TIMESPEC_REGEX; we can safely assume that
+    // the capture groups are populated; can expect something like 10m, 30s, 1h, etc...
+    let captures = TIMESPEC_REGEX.captures(&handles.config.time_limit).unwrap();
+    let length_match = captures.get(1).unwrap();
+    let measurement_match = captures.get(2).unwrap();
+
+    if let Ok(length) = length_match.as_str().parse::<u64>() {
+        let length_in_secs = match measurement_match.as_str().to_ascii_lowercase().as_str() {
+            "s" => length,
+            "m" => length * 60,           // minutes
+            "h" => length * 60 * 60,      // hours
+            "d" => length * 60 * 60 * 24, // days
+            _ => length,
+        };
+
+        log::debug!(
+            "max time limit as string: {} and as seconds: {}",
+            handles.config.time_limit,
+            length_in_secs
+        );
+
+        time::sleep(time::Duration::new(length_in_secs, 0)).await;
+
+        log::trace!("exit: start_max_time_thread");
+
+        #[cfg(test)]
+        panic!("{:?}", handles);
+        #[cfg(not(test))]
+        let _ = TermInputHandler::sigint_handler(handles.clone());
+    }
+
+    log::warn!(
+        "Could not parse the value provided ({}), can't enforce time limit",
+        handles.config.time_limit
+    );
+}
+
+/// Primary logic used to load a Configuration from disk and populate the appropriate data
+/// structures
+pub fn resume_scan(filename: &str) -> Configuration {
+    log::trace!("enter: resume_scan({})", filename);
+
+    let file = File::open(filename).unwrap_or_else(|e| {
+        log::error!("{}", e);
+        log::error!("Could not open state file, exiting");
+        std::process::exit(1);
+    });
+
+    let reader = BufReader::new(file);
+    let state: serde_json::Value = serde_json::from_reader(reader).unwrap();
+
+    let conf = state.get("config").unwrap_or_else(|| {
+        log::error!("Could not load configuration from state file, exiting");
+        std::process::exit(1);
+    });
+
+    let config = serde_json::from_value(conf.clone()).unwrap_or_else(|e| {
+        log::error!("{}", e);
+        log::error!("Could not deserialize configuration found in state file, exiting");
+        std::process::exit(1);
+    });
+
+    if let Some(responses) = state.get("responses") {
+        if let Some(arr_responses) = responses.as_array() {
+            for response in arr_responses {
+                if let Ok(deser_resp) = serde_json::from_value(response.clone()) {
+                    RESPONSES.insert(deser_resp);
+                }
+            }
+        }
+    }
+
+    log::trace!("exit: resume_scan -> {:?}", config);
+    config
+}
--- a/src/scanner.rs
+++ b/src/scanner.rs
@@ -1,986 +0,0 @@
-use crate::{
-    config::{Configuration, CONFIGURATION},
-    extractor::{extract_robots_txt, get_links, request_feroxresponse_from_new_link},
-    filters::{
-        FeroxFilter, LinesFilter, RegexFilter, SimilarityFilter, SizeFilter, StatusCodeFilter,
-        WildcardFilter, WordsFilter,
-    },
-    heuristics,
-    scan_manager::{FeroxResponses, FeroxScans, ScanStatus, PAUSE_SCAN},
-    statistics::{
-        StatCommand::{self, UpdateF64Field, UpdateUsizeField},
-        StatField::{DirScanTimes, ExpectedPerScan, TotalScans, WildcardsFiltered},
-        Stats,
-    },
-    utils::{format_url, get_current_depth, make_request},
-    FeroxChannel, FeroxResponse, SIMILARITY_THRESHOLD,
-};
-use futures::{
-    future::{BoxFuture, FutureExt},
-    stream, StreamExt,
-};
-use fuzzyhash::FuzzyHash;
-use lazy_static::lazy_static;
-use regex::Regex;
-use reqwest::{StatusCode, Url};
-#[cfg(not(test))]
-use std::process::exit;
-use std::{
-    collections::HashSet,
-    convert::TryInto,
-    ops::Deref,
-    sync::atomic::{AtomicUsize, Ordering},
-    sync::{Arc, RwLock},
-    time::Instant,
-};
-use tokio::{
-    sync::{
-        mpsc::{self, UnboundedReceiver, UnboundedSender},
-        Semaphore,
-    },
-    task::JoinHandle,
-};
-
-/// Single atomic number that gets incremented at least once, used to track first scan(s) vs. all
-/// others found during recursion
-///
-/// -u means this will be incremented once
-/// --stdin means this will be incremented by the number of targets passed via STDIN
-static CALL_COUNT: AtomicUsize = AtomicUsize::new(0);
-
-lazy_static! {
-    /// Set of urls that have been sent to [scan_url](fn.scan_url.html), used for deduplication
-    pub static ref SCANNED_URLS: FeroxScans = FeroxScans::default();
-
-    /// Vector of implementors of the FeroxFilter trait
-    static ref FILTERS: Arc<RwLock<Vec<Box<dyn FeroxFilter>>>> = Arc::new(RwLock::new(Vec::<Box<dyn FeroxFilter>>::new()));
-
-    /// Vector of FeroxResponse objects
-    pub static ref RESPONSES: FeroxResponses = FeroxResponses::default();
-
-    /// Bounded semaphore used as a barrier to limit concurrent scans
-    static ref SCAN_LIMITER: Semaphore = Semaphore::new(CONFIGURATION.scan_limit);
-
-
-}
-
-/// Adds the given FeroxFilter to the given list of FeroxFilter implementors
-///
-/// If the given list did not already contain the filter, return true; otherwise return false
-fn add_filter_to_list_of_ferox_filters(
-    filter: Box<dyn FeroxFilter>,
-    ferox_filters: Arc<RwLock<Vec<Box<dyn FeroxFilter>>>>,
-) -> bool {
-    log::trace!(
-        "enter: add_filter_to_list_of_ferox_filters({:?}, {:?})",
-        filter,
-        ferox_filters
-    );
-
-    match ferox_filters.write() {
-        Ok(mut filters) => {
-            // If the set did not contain the assigned filter, true is returned.
-            // If the set did contain the assigned filter, false is returned.
-            if filters.contains(&filter) {
-                log::trace!("exit: add_filter_to_list_of_ferox_filters -> false");
-                return false;
-            }
-
-            filters.push(filter);
-
-            log::trace!("exit: add_filter_to_list_of_ferox_filters -> true");
-            true
-        }
-        Err(e) => {
-            // poisoned lock
-            log::error!("Set of wildcard filters poisoned: {}", e);
-            log::trace!("exit: add_filter_to_list_of_ferox_filters -> false");
-            false
-        }
-    }
-}
-
-/// Spawn a single consumer task (sc side of mpsc)
-///
-/// The consumer simply receives Urls and scans them
-fn spawn_recursion_handler(
-    mut recursion_channel: UnboundedReceiver<String>,
-    wordlist: Arc<HashSet<String>>,
-    base_depth: usize,
-    stats: Arc<Stats>,
-    tx_term: UnboundedSender<FeroxResponse>,
-    tx_file: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> BoxFuture<'static, Vec<Arc<JoinHandle<()>>>> {
-    log::trace!(
-        "enter: spawn_recursion_handler({:?}, wordlist[{} words...], {}, {:?}, {:?}, {:?}, {:?})",
-        recursion_channel,
-        wordlist.len(),
-        base_depth,
-        stats,
-        tx_term,
-        tx_file,
-        tx_stats
-    );
-
-    let boxed_future = async move {
-        let mut scans = vec![];
-
-        while let Some(resp) = recursion_channel.recv().await {
-            let (unknown, scan) = SCANNED_URLS.add_directory_scan(&resp, stats.clone());
-
-            if !unknown {
-                // not unknown, i.e. we've seen the url before and don't need to scan again
-                continue;
-            }
-
-            update_stat!(tx_stats, UpdateUsizeField(TotalScans, 1));
-
-            log::info!("received {} on recursion channel", resp);
-
-            let term_clone = tx_term.clone();
-            let file_clone = tx_file.clone();
-            let tx_stats_clone = tx_stats.clone();
-            let stats_clone = stats.clone();
-            let resp_clone = resp.clone();
-            let list_clone = wordlist.clone();
-
-            let future = tokio::spawn(async move {
-                scan_url(
-                    resp_clone.to_owned().as_str(),
-                    list_clone,
-                    base_depth,
-                    stats_clone,
-                    term_clone,
-                    file_clone,
-                    tx_stats_clone,
-                )
-                .await
-            });
-
-            let shared_task = Arc::new(future);
-
-            if let Ok(mut u_scan) = scan.lock() {
-                u_scan.task = Some(shared_task.clone());
-            }
-
-            scans.push(shared_task);
-        }
-        scans
-    }
-    .boxed();
-
-    log::trace!("exit: spawn_recursion_handler -> BoxFuture<'static, Vec<JoinHandle<()>>>");
-    boxed_future
-}
-
-/// Creates a vector of formatted Urls
-///
-/// At least one value will be returned (base_url + word)
-///
-/// If any extensions were passed to the program, each extension will add a
-/// (base_url + word + ext) Url to the vector
-fn create_urls(
-    target_url: &str,
-    word: &str,
-    extensions: &[String],
-    tx_stats: UnboundedSender<StatCommand>,
-) -> Vec<Url> {
-    log::trace!(
-        "enter: create_urls({}, {}, {:?}, {:?})",
-        target_url,
-        word,
-        extensions,
-        tx_stats
-    );
-
-    let mut urls = vec![];
-
-    if let Ok(url) = format_url(
-        &target_url,
-        &word,
-        CONFIGURATION.add_slash,
-        &CONFIGURATION.queries,
-        None,
-        tx_stats.clone(),
-    ) {
-        urls.push(url); // default request, i.e. no extension
-    }
-
-    for ext in extensions.iter() {
-        if let Ok(url) = format_url(
-            &target_url,
-            &word,
-            CONFIGURATION.add_slash,
-            &CONFIGURATION.queries,
-            Some(ext),
-            tx_stats.clone(),
-        ) {
-            urls.push(url); // any extensions passed in
-        }
-    }
-
-    log::trace!("exit: create_urls -> {:?}", urls);
-    urls
-}
-
-/// Helper function to determine suitability for recursion
-///
-/// handles 2xx and 3xx responses by either checking if the url ends with a / (2xx)
-/// or if the Location header is present and matches the base url + / (3xx)
-fn response_is_directory(response: &FeroxResponse) -> bool {
-    log::trace!("enter: is_directory({})", response);
-
-    if response.status().is_redirection() {
-        // status code is 3xx
-        match response.headers().get("Location") {
-            // and has a Location header
-            Some(loc) => {
-                // get absolute redirect Url based on the already known base url
-                log::debug!("Location header: {:?}", loc);
-
-                if let Ok(loc_str) = loc.to_str() {
-                    if let Ok(abs_url) = response.url().join(loc_str) {
-                        if format!("{}/", response.url()) == abs_url.as_str() {
-                            // if current response's Url + / == the absolute redirection
-                            // location, we've found a directory suitable for recursion
-                            log::debug!(
-                                "found directory suitable for recursion: {}",
-                                response.url()
-                            );
-                            log::trace!("exit: is_directory -> true");
-                            return true;
-                        }
-                    }
-                }
-            }
-            None => {
-                log::debug!("expected Location header, but none was found: {}", response);
-                log::trace!("exit: is_directory -> false");
-                return false;
-            }
-        }
-    } else if response.status().is_success() || matches!(response.status(), &StatusCode::FORBIDDEN)
-    {
-        // status code is 2xx or 403, need to check if it ends in /
-
-        if response.url().as_str().ends_with('/') {
-            log::debug!("{} is directory suitable for recursion", response.url());
-            log::trace!("exit: is_directory -> true");
-            return true;
-        }
-    }
-
-    log::trace!("exit: is_directory -> false");
-    false
-}
-
-/// Helper function that determines if the configured maximum recursion depth has been reached
-///
-/// Essentially looks at the Url path and determines how many directories are present in the
-/// given Url
-fn reached_max_depth(url: &Url, base_depth: usize, max_depth: usize) -> bool {
-    log::trace!(
-        "enter: reached_max_depth({}, {}, {})",
-        url,
-        base_depth,
-        max_depth
-    );
-
-    if max_depth == 0 {
-        // early return, as 0 means recurse forever; no additional processing needed
-        log::trace!("exit: reached_max_depth -> false");
-        return false;
-    }
-
-    let depth = get_current_depth(url.as_str());
-
-    if depth - base_depth >= max_depth {
-        return true;
-    }
-
-    log::trace!("exit: reached_max_depth -> false");
-    false
-}
-
-/// Helper function that wraps logic to check for recursion opportunities
-///
-/// When a recursion opportunity is found, the new url is sent across the recursion channel
-async fn try_recursion(
-    response: &FeroxResponse,
-    base_depth: usize,
-    transmitter: UnboundedSender<String>,
-) {
-    log::trace!(
-        "enter: try_recursion({}, {}, {:?})",
-        response,
-        base_depth,
-        transmitter,
-    );
-
-    if !reached_max_depth(response.url(), base_depth, CONFIGURATION.depth)
-        && response_is_directory(&response)
-    {
-        if CONFIGURATION.redirects {
-            // response is 2xx can simply send it because we're following redirects
-            log::info!("Added new directory to recursive scan: {}", response.url());
-
-            match transmitter.send(String::from(response.url().as_str())) {
-                Ok(_) => {
-                    log::debug!("sent {} across channel to begin a new scan", response.url());
-                }
-                Err(e) => {
-                    log::error!(
-                        "Could not send {} to recursion handler: {}",
-                        response.url(),
-                        e
-                    );
-                }
-            }
-        } else {
-            let new_url = String::from(response.url().as_str());
-
-            log::info!("Added new directory to recursive scan: {}", new_url);
-
-            match transmitter.send(new_url) {
-                Ok(_) => {}
-                Err(e) => {
-                    log::error!(
-                        "Could not send {}/ to recursion handler: {}",
-                        response.url(),
-                        e
-                    );
-                }
-            }
-        }
-    }
-    log::trace!("exit: try_recursion");
-}
-
-/// Simple helper to stay DRY; determines whether or not a given `FeroxResponse` should be reported
-/// to the user or not.
-pub fn should_filter_response(
-    response: &FeroxResponse,
-    tx_stats: UnboundedSender<StatCommand>,
-) -> bool {
-    match FILTERS.read() {
-        Ok(filters) => {
-            for filter in filters.iter() {
-                // wildcard.should_filter goes here
-                if filter.should_filter_response(&response) {
-                    if filter.as_any().downcast_ref::<WildcardFilter>().is_some() {
-                        update_stat!(tx_stats, UpdateUsizeField(WildcardsFiltered, 1))
-                    }
-                    return true;
-                }
-            }
-        }
-        Err(e) => {
-            log::error!("{}", e);
-        }
-    }
-    false
-}
-
-/// Wrapper for [make_request](fn.make_request.html)
-///
-/// Handles making multiple requests based on the presence of extensions
-///
-/// Attempts recursion when appropriate and sends Responses to the report handler for processing
-async fn make_requests(
-    target_url: &str,
-    word: &str,
-    base_depth: usize,
-    stats: Arc<Stats>,
-    dir_chan: UnboundedSender<String>,
-    report_chan: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-) {
-    log::trace!(
-        "enter: make_requests({}, {}, {}, {:?}, {:?}, {:?}, {:?})",
-        target_url,
-        word,
-        base_depth,
-        stats,
-        dir_chan,
-        report_chan,
-        tx_stats
-    );
-
-    let urls = create_urls(
-        &target_url,
-        &word,
-        &CONFIGURATION.extensions,
-        tx_stats.clone(),
-    );
-
-    for url in urls {
-        if let Ok(response) = make_request(&CONFIGURATION.client, &url, tx_stats.clone()).await {
-            // response came back without error, convert it to FeroxResponse
-            let ferox_response = FeroxResponse::from(response, true).await;
-
-            // do recursion if appropriate
-            if !CONFIGURATION.no_recursion {
-                try_recursion(&ferox_response, base_depth, dir_chan.clone()).await;
-            }
-
-            // purposefully doing recursion before filtering. the thought process is that
-            // even though this particular url is filtered, subsequent urls may not
-
-            if should_filter_response(&ferox_response, tx_stats.clone()) {
-                continue;
-            }
-
-            if CONFIGURATION.extract_links && !ferox_response.status().is_redirection() {
-                let new_links = get_links(&ferox_response, tx_stats.clone()).await;
-
-                for new_link in new_links {
-                    let mut new_ferox_response = match request_feroxresponse_from_new_link(
-                        &new_link,
-                        tx_stats.clone(),
-                    )
-                    .await
-                    {
-                        Some(resp) => resp,
-                        None => continue,
-                    };
-
-                    // filter if necessary
-                    if should_filter_response(&new_ferox_response, tx_stats.clone()) {
-                        continue;
-                    }
-
-                    if new_ferox_response.is_file() {
-                        // very likely a file, simply request and report
-                        log::debug!("Singular extraction: {}", new_ferox_response);
-
-                        SCANNED_URLS
-                            .add_file_scan(&new_ferox_response.url().to_string(), stats.clone());
-
-                        send_report(report_chan.clone(), new_ferox_response);
-
-                        continue;
-                    }
-
-                    if !CONFIGURATION.no_recursion {
-                        log::debug!("Recursive extraction: {}", new_ferox_response);
-
-                        if !new_ferox_response.url().as_str().ends_with('/')
-                            && (new_ferox_response.status().is_success()
-                                || matches!(new_ferox_response.status(), &StatusCode::FORBIDDEN))
-                        {
-                            // if the url doesn't end with a /
-                            // and the response code is either a 2xx or 403
-
-                            // since all of these are 2xx or 403, recursion is only attempted if the
-                            // url ends in a /. I am actually ok with adding the slash and not
-                            // adding it, as both have merit.  Leaving it in for now to see how
-                            // things turn out (current as of: v1.1.0)
-                            new_ferox_response.set_url(&format!("{}/", new_ferox_response.url()));
-                        }
-
-                        try_recursion(&new_ferox_response, base_depth, dir_chan.clone()).await;
-                    }
-                }
-            }
-
-            // everything else should be reported
-            send_report(report_chan.clone(), ferox_response);
-        }
-    }
-    log::trace!("exit: make_requests");
-}
-
-/// Simple helper to send a `FeroxResponse` over the tx side of an `mpsc::unbounded_channel`
-pub fn send_report(report_sender: UnboundedSender<FeroxResponse>, response: FeroxResponse) {
-    log::trace!("enter: send_report({:?}, {}", report_sender, response);
-
-    match report_sender.send(response) {
-        Ok(_) => {}
-        Err(e) => {
-            log::error!("{}", e);
-        }
-    }
-
-    log::trace!("exit: send_report");
-}
-
-/// Request /robots.txt from given url
-async fn scan_robots_txt(
-    target_url: &str,
-    base_depth: usize,
-    stats: Arc<Stats>,
-    tx_term: UnboundedSender<FeroxResponse>,
-    tx_dir: UnboundedSender<String>,
-    tx_stats: UnboundedSender<StatCommand>,
-) {
-    log::trace!(
-        "enter: scan_robots_txt({}, {}, {:?}, {:?}, {:?}, {:?})",
-        target_url,
-        base_depth,
-        stats,
-        tx_term,
-        tx_dir,
-        tx_stats
-    );
-
-    let robots_links = extract_robots_txt(&target_url, &CONFIGURATION, tx_stats.clone()).await;
-
-    for robot_link in robots_links {
-        // create a url based on the given command line options, continue on error
-        let mut ferox_response =
-            match request_feroxresponse_from_new_link(&robot_link, tx_stats.clone()).await {
-                Some(resp) => resp,
-                None => continue,
-            };
-
-        if should_filter_response(&ferox_response, tx_stats.clone()) {
-            continue;
-        }
-
-        if ferox_response.is_file() {
-            log::debug!("File extracted from robots.txt: {}", ferox_response);
-            SCANNED_URLS.add_file_scan(&robot_link, stats.clone());
-            send_report(tx_term.clone(), ferox_response);
-        } else if !CONFIGURATION.no_recursion {
-            log::debug!("Directory extracted from robots.txt: {}", ferox_response);
-            // todo this code is essentially the same as another piece around ~467 of this file
-            if !ferox_response.url().as_str().ends_with('/')
-                && (ferox_response.status().is_success()
-                    || matches!(ferox_response.status(), &StatusCode::FORBIDDEN))
-            {
-                // if the url doesn't end with a /
-                // and the response code is either a 2xx or 403
-                ferox_response.set_url(&format!("{}/", ferox_response.url()));
-            }
-
-            try_recursion(&ferox_response, base_depth, tx_dir.clone()).await;
-        }
-    }
-    log::trace!("exit: scan_robots_txt");
-}
-
-/// Scan a given url using a given wordlist
-///
-/// This is the primary entrypoint for the scanner
-pub async fn scan_url(
-    target_url: &str,
-    wordlist: Arc<HashSet<String>>,
-    base_depth: usize,
-    stats: Arc<Stats>,
-    tx_term: UnboundedSender<FeroxResponse>,
-    tx_file: UnboundedSender<FeroxResponse>,
-    tx_stats: UnboundedSender<StatCommand>,
-) {
-    log::trace!(
-        "enter: scan_url({:?}, wordlist[{} words...], {}, {:?}, {:?}, {:?}, {:?})",
-        target_url,
-        wordlist.len(),
-        base_depth,
-        stats,
-        tx_term,
-        tx_file,
-        tx_stats
-    );
-
-    log::info!("Starting scan against: {}", target_url);
-
-    let scan_timer = Instant::now();
-
-    let (tx_dir, rx_dir): FeroxChannel<String> = mpsc::unbounded_channel();
-
-    if CALL_COUNT.load(Ordering::Relaxed) < stats.initial_targets.load(Ordering::Relaxed) {
-        CALL_COUNT.fetch_add(1, Ordering::Relaxed);
-
-        if CONFIGURATION.extract_links {
-            // only grab robots.txt on the initial scan_url calls. all fresh dirs will be passed
-            // to try_recursion
-            scan_robots_txt(
-                target_url,
-                base_depth,
-                stats.clone(),
-                tx_term.clone(),
-                tx_dir.clone(),
-                tx_stats.clone(),
-            )
-            .await;
-        }
-
-        update_stat!(tx_stats, UpdateUsizeField(TotalScans, 1));
-
-        // this protection allows us to add the first scanned url to SCANNED_URLS
-        // from within the scan_url function instead of the recursion handler
-        SCANNED_URLS.add_directory_scan(&target_url, stats.clone());
-    }
-
-    let ferox_scan = match SCANNED_URLS.get_scan_by_url(&target_url) {
-        Some(scan) => {
-            if let Ok(mut u_scan) = scan.lock() {
-                u_scan.status = ScanStatus::Running;
-            }
-            scan
-        }
-        None => {
-            log::error!(
-                "Could not find FeroxScan associated with {}; this shouldn't happen... exiting",
-                target_url
-            );
-            return;
-        }
-    };
-
-    let progress_bar = match ferox_scan.lock() {
-        Ok(mut scan) => scan.progress_bar(),
-        Err(e) => {
-            log::error!("FeroxScan's ({:?}) mutex is poisoned: {}", ferox_scan, e);
-            return;
-        }
-    };
-
-    // When acquire is called and the semaphore has remaining permits, the function immediately
-    // returns a permit. However, if no remaining permits are available, acquire (asynchronously)
-    // waits until an outstanding permit is dropped. At this point, the freed permit is assigned
-    // to the caller.
-    let permit = SCAN_LIMITER.acquire().await;
-
-    // Arc clones to be passed around to the various scans
-    let wildcard_bar = progress_bar.clone();
-    let heuristics_term_clone = tx_term.clone();
-    let heuristics_stats_clone = tx_stats.clone();
-    let recurser_term_clone = tx_term.clone();
-    let recurser_file_clone = tx_file.clone();
-    let recurser_stats_clone = tx_stats.clone();
-    let recurser_words = wordlist.clone();
-    let looping_words = wordlist.clone();
-    let looping_stats = stats.clone();
-
-    let recurser = tokio::spawn(async move {
-        spawn_recursion_handler(
-            rx_dir,
-            recurser_words,
-            base_depth,
-            stats.clone(),
-            recurser_term_clone,
-            recurser_file_clone,
-            recurser_stats_clone,
-        )
-        .await
-    });
-
-    // add any wildcard filters to `FILTERS`
-    let filter = match heuristics::wildcard_test(
-        &target_url,
-        wildcard_bar,
-        heuristics_term_clone,
-        heuristics_stats_clone,
-    )
-    .await
-    {
-        Some(f) => Box::new(f),
-        None => Box::new(WildcardFilter::default()),
-    };
-
-    add_filter_to_list_of_ferox_filters(filter, FILTERS.clone());
-
-    // producer tasks (mp of mpsc); responsible for making requests
-    let producers = stream::iter(looping_words.deref().to_owned())
-        .map(|word| {
-            let txd = tx_dir.clone();
-            let txr = tx_term.clone();
-            let txs = tx_stats.clone();
-            let pb = progress_bar.clone(); // progress bar is an Arc around internal state
-            let tgt = target_url.to_string(); // done to satisfy 'static lifetime below
-            let lst = looping_stats.clone();
-            (
-                tokio::spawn(async move {
-                    if PAUSE_SCAN.load(Ordering::Acquire) {
-                        // for every word in the wordlist, check to see if PAUSE_SCAN is set to true
-                        // when true; enter a busy loop that only exits by setting PAUSE_SCAN back
-                        // to false
-                        SCANNED_URLS.pause(true).await;
-                    }
-                    make_requests(&tgt, &word, base_depth, lst, txd, txr, txs).await
-                }),
-                pb,
-            )
-        })
-        .for_each_concurrent(CONFIGURATION.threads, |(resp, bar)| async move {
-            match resp.await {
-                Ok(_) => {
-                    bar.inc((CONFIGURATION.extensions.len() + 1) as u64);
-                }
-                Err(e) => {
-                    log::error!("error awaiting a response: {}", e);
-                }
-            }
-        });
-
-    // await tx tasks
-    log::trace!("awaiting scan producers");
-    producers.await;
-    log::trace!("done awaiting scan producers");
-
-    update_stat!(
-        tx_stats,
-        UpdateF64Field(DirScanTimes, scan_timer.elapsed().as_secs_f64())
-    );
-
-    // drop the current permit so the semaphore will allow another scan to proceed
-    drop(permit);
-
-    if let Ok(mut scan) = ferox_scan.lock() {
-        scan.finish();
-    }
-
-    // manually drop tx in order for the rx task's while loops to eval to false
-    log::trace!("dropped recursion handler's transmitter");
-    drop(tx_dir);
-
-    // note: in v1.11.2 i removed the join_all call that used to handle the recurser handles.
-    // nothing appears to change by having them removed, however, if ever a revert is needed
-    // this is the place and anything prior to 1.11.2 will have the code to do so
-    let _ = recurser.await.unwrap_or_default();
-
-    log::trace!("exit: scan_url");
-}
-
-/// Perform steps necessary to run scans that only need to be performed once (warming up the
-/// engine, as it were)
-pub async fn initialize(
-    num_words: usize,
-    config: &Configuration,
-    tx_stats: UnboundedSender<StatCommand>,
-) {
-    log::trace!(
-        "enter: initialize({}, {:?}, {:?})",
-        num_words,
-        config,
-        tx_stats
-    );
-
-    // number of requests only needs to be calculated once, and then can be reused
-    let num_reqs_expected: u64 = if config.extensions.is_empty() {
-        num_words.try_into().unwrap()
-    } else {
-        let total = num_words * (config.extensions.len() + 1);
-        total.try_into().unwrap()
-    };
-
-    // tell Stats object about the number of expected requests
-    update_stat!(
-        tx_stats,
-        UpdateUsizeField(ExpectedPerScan, num_reqs_expected as usize)
-    );
-
-    // add any status code filters to `FILTERS` (-C|--filter-status)
-    for code_filter in &config.filter_status {
-        let filter = StatusCodeFilter {
-            filter_code: *code_filter,
-        };
-        let boxed_filter = Box::new(filter);
-        add_filter_to_list_of_ferox_filters(boxed_filter, FILTERS.clone());
-    }
-
-    // add any line count filters to `FILTERS` (-N|--filter-lines)
-    for lines_filter in &config.filter_line_count {
-        let filter = LinesFilter {
-            line_count: *lines_filter,
-        };
-        let boxed_filter = Box::new(filter);
-        add_filter_to_list_of_ferox_filters(boxed_filter, FILTERS.clone());
-    }
-
-    // add any line count filters to `FILTERS` (-W|--filter-words)
-    for words_filter in &config.filter_word_count {
-        let filter = WordsFilter {
-            word_count: *words_filter,
-        };
-        let boxed_filter = Box::new(filter);
-        add_filter_to_list_of_ferox_filters(boxed_filter, FILTERS.clone());
-    }
-
-    // add any line count filters to `FILTERS` (-S|--filter-size)
-    for size_filter in &config.filter_size {
-        let filter = SizeFilter {
-            content_length: *size_filter,
-        };
-        let boxed_filter = Box::new(filter);
-        add_filter_to_list_of_ferox_filters(boxed_filter, FILTERS.clone());
-    }
-
-    // add any regex filters to `FILTERS` (-X|--filter-regex)
-    for regex_filter in &config.filter_regex {
-        let raw = regex_filter;
-        let compiled = match Regex::new(&raw) {
-            Ok(regex) => regex,
-            Err(e) => {
-                log::error!("Invalid regular expression: {}", e);
-                #[cfg(test)]
-                panic!();
-                #[cfg(not(test))]
-                exit(1);
-            }
-        };
-
-        let filter = RegexFilter {
-            raw_string: raw.to_owned(),
-            compiled,
-        };
-        let boxed_filter = Box::new(filter);
-        add_filter_to_list_of_ferox_filters(boxed_filter, FILTERS.clone());
-    }
-
-    // add any similarity filters to `FILTERS` (--filter-similar-to)
-    for similarity_filter in &config.filter_similar {
-        // url as-is based on input, ignores user-specified url manipulation options (add-slash etc)
-        if let Ok(url) = format_url(
-            &similarity_filter,
-            &"",
-            false,
-            &Vec::new(),
-            None,
-            tx_stats.clone(),
-        ) {
-            // attempt to request the given url
-            if let Ok(resp) = make_request(&CONFIGURATION.client, &url, tx_stats.clone()).await {
-                // if successful, create a filter based on the response's body
-                let fr = FeroxResponse::from(resp, true).await;
-
-                // hash the response body and store the resulting hash in the filter object
-                let hash = FuzzyHash::new(&fr.text()).to_string();
-
-                let filter = SimilarityFilter {
-                    text: hash,
-                    threshold: SIMILARITY_THRESHOLD,
-                };
-
-                let boxed_filter = Box::new(filter);
-                add_filter_to_list_of_ferox_filters(boxed_filter, FILTERS.clone());
-            }
-        }
-    }
-
-    if config.scan_limit == 0 {
-        // scan_limit == 0 means no limit should be imposed... however, scoping the Semaphore
-        // permit is tricky, so as a workaround, we'll add a ridiculous number of permits to
-        // the semaphore (1,152,921,504,606,846,975 to be exact) and call that 'unlimited'
-        SCAN_LIMITER.add_permits(usize::MAX >> 4);
-    }
-
-    log::trace!("exit: initialize");
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    /// sending url + word without any extensions should get back one url with the joined word
-    fn create_urls_no_extension_returns_base_url_with_word() {
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-        let urls = create_urls("http://localhost", "turbo", &[], tx);
-        assert_eq!(urls, [Url::parse("http://localhost/turbo").unwrap()])
-    }
-
-    #[test]
-    /// sending url + word + 1 extension should get back two urls, one base and one with extension
-    fn create_urls_one_extension_returns_two_urls() {
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-        let urls = create_urls("http://localhost", "turbo", &[String::from("js")], tx);
-        assert_eq!(
-            urls,
-            [
-                Url::parse("http://localhost/turbo").unwrap(),
-                Url::parse("http://localhost/turbo.js").unwrap()
-            ]
-        )
-    }
-
-    #[test]
-    /// sending url + word + multiple extensions should get back n+1 urls
-    fn create_urls_multiple_extensions_returns_n_plus_one_urls() {
-        let ext_vec = vec![
-            vec![String::from("js")],
-            vec![String::from("js"), String::from("php")],
-            vec![String::from("js"), String::from("php"), String::from("pdf")],
-            vec![
-                String::from("js"),
-                String::from("php"),
-                String::from("pdf"),
-                String::from("tar.gz"),
-            ],
-        ];
-
-        let base = Url::parse("http://localhost/turbo").unwrap();
-        let js = Url::parse("http://localhost/turbo.js").unwrap();
-        let php = Url::parse("http://localhost/turbo.php").unwrap();
-        let pdf = Url::parse("http://localhost/turbo.pdf").unwrap();
-        let tar = Url::parse("http://localhost/turbo.tar.gz").unwrap();
-
-        let expected = vec![
-            vec![base.clone(), js.clone()],
-            vec![base.clone(), js.clone(), php.clone()],
-            vec![base.clone(), js.clone(), php.clone(), pdf.clone()],
-            vec![base, js, php, pdf, tar],
-        ];
-
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-
-        for (i, ext_set) in ext_vec.into_iter().enumerate() {
-            let urls = create_urls("http://localhost", "turbo", &ext_set, tx.clone());
-            assert_eq!(urls, expected[i]);
-        }
-    }
-
-    #[test]
-    /// call reached_max_depth with max depth of zero, which is infinite recursion, expect false
-    fn reached_max_depth_returns_early_on_zero() {
-        let url = Url::parse("http://localhost").unwrap();
-        let result = reached_max_depth(&url, 0, 0);
-        assert!(!result);
-    }
-
-    #[test]
-    /// call reached_max_depth with url depth equal to max depth, expect true
-    fn reached_max_depth_current_depth_equals_max() {
-        let url = Url::parse("http://localhost/one/two").unwrap();
-        let result = reached_max_depth(&url, 0, 2);
-        assert!(result);
-    }
-
-    #[test]
-    /// call reached_max_depth with url dpeth less than max depth, expect false
-    fn reached_max_depth_current_depth_less_than_max() {
-        let url = Url::parse("http://localhost").unwrap();
-        let result = reached_max_depth(&url, 0, 2);
-        assert!(!result);
-    }
-
-    #[test]
-    /// call reached_max_depth with url of 2, base depth of 2, and max depth of 2, expect false
-    fn reached_max_depth_base_depth_equals_max_depth() {
-        let url = Url::parse("http://localhost/one/two").unwrap();
-        let result = reached_max_depth(&url, 2, 2);
-        assert!(!result);
-    }
-
-    #[test]
-    /// call reached_max_depth with url depth greater than max depth, expect true
-    fn reached_max_depth_current_greater_than_max() {
-        let url = Url::parse("http://localhost/one/two/three").unwrap();
-        let result = reached_max_depth(&url, 0, 2);
-        assert!(result);
-    }
-
-    #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-    #[should_panic]
-    /// call initialize with a bad regex, triggering a panic
-    async fn initialize_panics_on_bad_regex() {
-        let config = Configuration {
-            filter_regex: vec![r"(".to_string()],
-            ..Default::default()
-        };
-        let (tx, _): FeroxChannel<StatCommand> = mpsc::unbounded_channel();
-        initialize(1, &config, tx).await;
-    }
-}
--- a/src/scanner/ferox_scanner.rs
+++ b/src/scanner/ferox_scanner.rs
@@ -0,0 +1,354 @@
+use std::fmt::Write as _;
+use std::sync::atomic::AtomicBool;
+use std::{ops::Deref, sync::atomic::Ordering, sync::Arc, time::Instant};
+
+use anyhow::{bail, Result};
+use console::style;
+use futures::{stream, StreamExt};
+use indicatif::ProgressBar;
+use lazy_static::lazy_static;
+use tokio::sync::Semaphore;
+
+use crate::filters::{create_similarity_filter, EmptyFilter, SimilarityFilter};
+use crate::Command::AddFilter;
+use crate::{
+    event_handlers::{
+        Command::{AddError, AddToF64Field, AddToUsizeField, SubtractFromUsizeField},
+        Handles,
+    },
+    extractor::{ExtractionTarget, ExtractorBuilder},
+    heuristics,
+    scan_manager::{FeroxResponses, FeroxScans, MenuCmdResult, ScanOrder, ScanStatus, PAUSE_SCAN},
+    scanner::requester::TF_IDF,
+    statistics::{
+        StatError::Other,
+        StatField::{DirScanTimes, TotalExpected},
+    },
+    utils::fmt_err,
+    Command,
+};
+
+use super::requester::Requester;
+
+lazy_static! {
+    /// Vector of FeroxResponse objects
+    pub static ref RESPONSES: FeroxResponses = FeroxResponses::default();
+    // todo consider removing this
+}
+
+/// check to see if `pause_flag` is set to true. when true; enter a busy loop that only exits
+/// by setting PAUSE_SCAN back to false
+async fn check_for_user_input(
+    pause_flag: &AtomicBool,
+    scanned_urls: Arc<FeroxScans>,
+    handles: Arc<Handles>,
+) {
+    log::trace!(
+        "enter: check_for_user_input({:?}, SCANNED_URLS, HANDLES)",
+        pause_flag
+    );
+
+    // todo write a test or two for this function at some point...
+    if pause_flag.load(Ordering::Acquire) {
+        match scanned_urls.pause(true, handles.clone()).await {
+            Some(MenuCmdResult::Url(url)) => {
+                // user wants to add a new url to be scanned, need to send
+                // it over to the event handler for processing
+                handles
+                    .send_scan_command(Command::ScanNewUrl(url))
+                    .unwrap_or_else(|e| log::warn!("Could not add scan to scan queue: {}", e))
+            }
+            Some(MenuCmdResult::NumCancelled(num_canx)) => {
+                if num_canx > 0 {
+                    handles
+                        .stats
+                        .send(SubtractFromUsizeField(TotalExpected, num_canx))
+                        .unwrap_or_else(|e| log::warn!("Could not update overall scan bar: {}", e));
+                }
+            }
+            Some(MenuCmdResult::Filter(mut filter)) => {
+                let url = if let Some(SimilarityFilter { original_url, .. }) =
+                    filter.as_any().downcast_ref::<SimilarityFilter>()
+                {
+                    original_url.to_owned()
+                } else {
+                    String::new()
+                };
+
+                if !url.is_empty() {
+                    // filter was a SimilarityFilter and now we have a url to request.
+                    //
+                    // The reason for this janky structure is that `filter.as_any().downcast_ref`
+                    // isn't Send so we can't call create_similarity_filter(...).await, within
+                    // the if let Some ipso-facto, janky code /shrug
+                    let real_filter = create_similarity_filter(&url, handles.clone())
+                        .await
+                        .unwrap_or_default();
+
+                    if real_filter.original_url.is_empty() {
+                        // failed to create filter
+                        filter = Box::new(EmptyFilter {});
+                    } else {
+                        filter = Box::new(real_filter)
+                    }
+                }
+
+                handles
+                    .filters
+                    .send(AddFilter(filter))
+                    .unwrap_or_else(|e| log::warn!("Could not add new filter: {}", e));
+            }
+            _ => {}
+        }
+    }
+    log::trace!("exit: check_for_user_input");
+}
+
+/// handles the main muscle movement of scanning a url
+pub struct FeroxScanner {
+    /// handles to handlers and config
+    pub(super) handles: Arc<Handles>,
+
+    /// url that will be scanned
+    pub(super) target_url: String,
+
+    /// whether or not this scanner is targeting an initial target specified by the user or one
+    /// found via recursion
+    order: ScanOrder,
+
+    /// wordlist that's already been read from disk
+    wordlist: Arc<Vec<String>>,
+
+    /// limiter that restricts the number of active FeroxScanners
+    scan_limiter: Arc<Semaphore>,
+}
+
+/// FeroxScanner implementation
+impl FeroxScanner {
+    /// create a new FeroxScanner
+    pub fn new(
+        target_url: &str,
+        order: ScanOrder,
+        wordlist: Arc<Vec<String>>,
+        scan_limiter: Arc<Semaphore>,
+        handles: Arc<Handles>,
+    ) -> Self {
+        Self {
+            order,
+            handles,
+            wordlist,
+            scan_limiter,
+            target_url: target_url.to_string(),
+        }
+    }
+
+    /// produces and awaits tasks (mp of mpsc); responsible for making requests
+    async fn stream_requests(
+        &self,
+        looping_words: Arc<Vec<String>>,
+        progress_bar: ProgressBar,
+        scanned_urls: Arc<FeroxScans>,
+        requester: Arc<Requester>,
+    ) {
+        log::trace!("enter: stream_requests(params too verbose to print)");
+
+        let producers = stream::iter(looping_words.deref().to_owned())
+            .map(|word| {
+                let pb = progress_bar.clone(); // progress bar is an Arc around internal state
+                let scanned_urls_clone = scanned_urls.clone();
+                let requester_clone = requester.clone();
+                let handles_clone = self.handles.clone();
+                (
+                    tokio::spawn(async move {
+                        // for every word in the wordlist, check to see if user has pressed enter
+                        // in order to go into the interactive menu
+                        check_for_user_input(&PAUSE_SCAN, scanned_urls_clone, handles_clone).await;
+
+                        // after checking for user input, send the request
+                        requester_clone
+                            .request(&word)
+                            .await
+                            .unwrap_or_else(|e| log::warn!("Requester encountered an error: {}", e))
+                    }),
+                    pb,
+                )
+            })
+            .for_each_concurrent(self.handles.config.threads, |(resp, bar)| async move {
+                match resp.await {
+                    Ok(_) => {
+                        let increment_len = self.handles.expected_num_requests_multiplier() as u64;
+                        bar.inc(increment_len);
+                    }
+                    Err(e) => {
+                        log::warn!("error awaiting a response: {}", e);
+                        self.handles.stats.send(AddError(Other)).unwrap_or_default();
+                    }
+                }
+            });
+
+        // await tx tasks
+        log::trace!("awaiting scan producers");
+        producers.await;
+        log::trace!("done awaiting scan producers");
+        log::trace!("exit: stream_requests");
+    }
+
+    /// Scan a given url using a given wordlist
+    ///
+    /// This is the primary entrypoint for the scanner
+    pub async fn scan_url(&self) -> Result<()> {
+        log::trace!("enter: scan_url");
+        log::info!("Starting scan against: {}", self.target_url);
+
+        let mut scan_timer = Instant::now();
+
+        if self.handles.config.extract_links && matches!(self.order, ScanOrder::Initial) {
+            // check for robots.txt (cannot be in sub-directories, so limited to Initial)
+            let mut extractor = ExtractorBuilder::default()
+                .target(ExtractionTarget::RobotsTxt)
+                .url(&self.target_url)
+                .handles(self.handles.clone())
+                .build()?;
+
+            let result = extractor.extract().await?;
+            extractor.request_links(result).await?;
+        }
+
+        let scanned_urls = self.handles.ferox_scans()?;
+        let ferox_scan = match scanned_urls.get_scan_by_url(&self.target_url) {
+            Some(scan) => {
+                scan.set_status(ScanStatus::Running)?;
+                scan
+            }
+            None => {
+                let msg = format!(
+                    "Could not find FeroxScan associated with {}; this shouldn't happen... exiting",
+                    self.target_url
+                );
+                bail!(fmt_err(&msg))
+            }
+        };
+
+        let progress_bar = ferox_scan.progress_bar();
+
+        // When acquire is called and the semaphore has remaining permits, the function immediately
+        // returns a permit. However, if no remaining permits are available, acquire (asynchronously)
+        // waits until an outstanding permit is dropped, at which point, the freed permit is assigned
+        // to the caller.
+        let _permit = self.scan_limiter.acquire().await;
+
+        if self.handles.config.scan_limit > 0 {
+            scan_timer = Instant::now();
+            progress_bar.reset();
+        }
+
+        {
+            // heuristics test block
+            let test = heuristics::HeuristicTests::new(self.handles.clone());
+
+            if let Ok(num_reqs) = test.wildcard(&self.target_url).await {
+                progress_bar.inc(num_reqs);
+            }
+
+            if let Ok(dirlist_result) = test.directory_listing(&self.target_url).await {
+                if dirlist_result.is_some() {
+                    let dirlist_result = dirlist_result.unwrap();
+                    // at this point, we have a DirListingType, and it's not the None variant
+                    // which means we found directory listing based on the heuristic; now we need
+                    // to process the links that are available if --extract-links was used
+
+                    if self.handles.config.extract_links {
+                        let mut extractor = ExtractorBuilder::default()
+                            .response(&dirlist_result.response)
+                            .target(ExtractionTarget::DirectoryListing)
+                            .url(&self.target_url)
+                            .handles(self.handles.clone())
+                            .build()?;
+
+                        let result = extractor.extract_from_dir_listing().await?;
+
+                        extractor.request_links(result).await?;
+
+                        log::trace!("exit: scan_url -> Directory listing heuristic");
+
+                        self.handles.stats.send(AddToF64Field(
+                            DirScanTimes,
+                            scan_timer.elapsed().as_secs_f64(),
+                        ))?;
+
+                        self.handles.stats.send(SubtractFromUsizeField(
+                            TotalExpected,
+                            progress_bar.length() as usize,
+                        ))?;
+                    }
+
+                    let mut message = format!("=> {}", style("Directory listing").blue().bright());
+
+                    if !self.handles.config.extract_links {
+                        write!(message, " (add {} to scan)", style("-e").bright().yellow())?;
+                    }
+
+                    progress_bar.reset_eta();
+                    progress_bar.finish_with_message(&message);
+
+                    ferox_scan.finish()?;
+
+                    return Ok(());
+                }
+            }
+        }
+
+        // Arc clones to be passed around to the various scans
+        let looping_words = self.wordlist.clone();
+
+        let requester = Arc::new(Requester::from(self, ferox_scan.clone())?);
+
+        self.stream_requests(
+            looping_words.clone(),
+            progress_bar.clone(),
+            scanned_urls.clone(),
+            requester.clone(),
+        )
+        .await;
+
+        if self.handles.config.collect_words {
+            let new_words = TF_IDF.read().unwrap().all_words();
+            let new_words_len = new_words.len();
+
+            let cur_length = progress_bar.length();
+            let new_length = cur_length + new_words_len as u64;
+
+            progress_bar.set_length(new_length);
+
+            self.handles
+                .stats
+                .send(AddToUsizeField(TotalExpected, new_words.len()))
+                .unwrap_or_default();
+
+            log::info!(
+                "requesting {} collected words: {:?}...",
+                new_words_len,
+                &new_words[..new_words_len.min(3)]
+            );
+
+            self.stream_requests(
+                Arc::new(new_words),
+                progress_bar.clone(),
+                scanned_urls.clone(),
+                requester.clone(),
+            )
+            .await;
+        }
+
+        self.handles.stats.send(AddToF64Field(
+            DirScanTimes,
+            scan_timer.elapsed().as_secs_f64(),
+        ))?;
+
+        ferox_scan.finish()?;
+
+        log::trace!("exit: scan_url");
+
+        Ok(())
+    }
+}
--- a/src/scanner/init.rs
+++ b/src/scanner/init.rs
@@ -0,0 +1,29 @@
+use crate::{
+    event_handlers::{Command::AddToUsizeField, Handles},
+    statistics::StatField::ExpectedPerScan,
+};
+use anyhow::Result;
+use std::{convert::TryInto, sync::Arc};
+
+/// Perform steps necessary to run scans that only need to be performed once (warming up the
+/// engine, as it were)
+pub async fn initialize(num_words: usize, handles: Arc<Handles>) -> Result<()> {
+    log::trace!("enter: initialize({}, {:?})", num_words, handles);
+
+    // number of requests only needs to be calculated once, and then can be reused
+    let num_reqs_expected: u64 = handles.expected_num_requests_per_dir().try_into()?;
+
+    {
+        // no real reason to keep the arc around beyond this call
+        let scans = handles.ferox_scans()?;
+        scans.set_bar_length(num_reqs_expected);
+    }
+
+    // tell Stats object about the number of expected requests
+    handles
+        .stats
+        .send(AddToUsizeField(ExpectedPerScan, num_reqs_expected as usize))?;
+
+    log::trace!("exit: initialize");
+    Ok(())
+}
--- a/src/scanner/limit_heap.rs
+++ b/src/scanner/limit_heap.rs
@@ -0,0 +1,171 @@
+use std::fmt::{Debug, Formatter, Result};
+
+/// bespoke variation on an array-backed max-heap
+///
+/// 255 possible values generated from the initial requests/second
+///
+/// when no additional errors are encountered, the left child is taken (increasing req/sec)
+/// if errors have increased since the last interval, the right child is taken (decreasing req/sec)
+///
+/// formula for each child:
+/// - left: (|parent - current|) / 2 + current
+/// - right: current - ((|parent - current|) / 2)
+pub(super) struct LimitHeap {
+    /// backing array, 255 nodes == height of 7 ( 2^(h+1) -1 nodes )
+    pub(super) inner: [i32; 255],
+
+    /// original # of requests / second
+    pub(super) original: i32,
+
+    /// current position w/in the backing array
+    pub(super) current: usize,
+}
+
+/// default implementation of a LimitHeap
+impl Default for LimitHeap {
+    /// zero-initialize the backing array
+    fn default() -> Self {
+        Self {
+            inner: [0; 255],
+            original: 0,
+            current: 0,
+        }
+    }
+}
+
+/// Debug implementation of a LimitHeap
+impl Debug for LimitHeap {
+    /// return debug representation that conforms to <32 elements in array
+    fn fmt(&self, f: &mut Formatter<'_>) -> Result {
+        let msg = format!(
+            "LimitHeap {{ original: {}, current: {}, inner: [{}...] }}",
+            self.original, self.current, self.inner[0]
+        );
+        write!(f, "{}", msg)
+    }
+}
+
+/// implementation of a LimitHeap
+impl LimitHeap {
+    /// move to right child, return node's index from which the move was requested
+    pub(super) fn move_right(&mut self) -> usize {
+        if self.has_children() {
+            let tmp = self.current;
+            self.current = self.current * 2 + 2;
+            return tmp;
+        }
+        self.current
+    }
+
+    /// move to left child, return node's index from which the move was requested
+    pub(super) fn move_left(&mut self) -> usize {
+        if self.has_children() {
+            let tmp = self.current;
+            self.current = self.current * 2 + 1;
+            return tmp;
+        }
+        self.current
+    }
+
+    /// move to parent, return node's index from which the move was requested
+    pub(super) fn move_up(&mut self) -> usize {
+        if self.has_parent() {
+            let tmp = self.current;
+            self.current = (self.current - 1) / 2;
+            return tmp;
+        }
+        self.current
+    }
+
+    /// move directly to the given index
+    pub(super) fn move_to(&mut self, index: usize) {
+        self.current = index;
+    }
+
+    /// get the current node's value
+    pub(super) fn value(&self) -> i32 {
+        self.inner[self.current]
+    }
+
+    /// set the current node's value
+    pub(super) fn set_value(&mut self, value: i32) {
+        self.inner[self.current] = value;
+    }
+
+    /// check that this node has a parent (true for all except root)
+    pub(super) fn has_parent(&self) -> bool {
+        self.current > 0
+    }
+
+    /// get node's parent's value or self.original if at the root
+    pub(super) fn parent_value(&mut self) -> i32 {
+        if self.has_parent() {
+            let current = self.move_up();
+            let val = self.value();
+            self.move_to(current);
+            return val;
+        }
+        self.original
+    }
+
+    /// check if the current node has children
+    pub(super) fn has_children(&self) -> bool {
+        // inner structure is a complete tree, just check for the right child
+        self.current * 2 + 2 <= self.inner.len()
+    }
+
+    /// get current node's right child's value
+    fn right_child_value(&mut self) -> i32 {
+        let tmp = self.move_right();
+        let val = self.value();
+        self.move_to(tmp);
+        val
+    }
+
+    /// set current node's left child's value
+    fn set_left_child(&mut self) {
+        let parent = self.parent_value();
+        let current = self.value();
+        let value = ((parent - current).abs() / 2) + current;
+
+        self.move_left();
+        self.set_value(value);
+        self.move_up();
+    }
+
+    /// set current node's right child's value
+    fn set_right_child(&mut self) {
+        let parent = self.parent_value();
+        let current = self.value();
+        let value = current - ((parent - current).abs() / 2);
+
+        self.move_right();
+        self.set_value(value);
+        self.move_up();
+    }
+
+    /// iterate over the backing array, filling in each child's value based on the original value
+    pub(super) fn build(&mut self) {
+        // ex: original is 400
+        // arr[0] == 200
+        // arr[1] (left child) == 300
+        // arr[2] (right child) == 100
+        let root = self.original / 2;
+
+        self.inner[0] = root; // set root node to half of the original value
+        self.inner[1] = ((self.original - root).abs() / 2) + root;
+        self.inner[2] = root - ((self.original - root).abs() / 2);
+
+        // start with index 1 and fill in each child below that node
+        for i in 1..self.inner.len() {
+            self.move_to(i);
+
+            if self.has_children() && self.right_child_value() == 0 {
+                // this node has an unset child since the rchild is 0
+                self.set_left_child();
+                self.set_right_child();
+            }
+        }
+        self.move_to(0); // reset current index to the root of the tree
+    }
+}
--- a/src/scanner/mod.rs
+++ b/src/scanner/mod.rs
@@ -0,0 +1,12 @@
+mod ferox_scanner;
+mod utils;
+mod init;
+#[cfg(test)]
+mod tests;
+mod limit_heap;
+mod policy_data;
+mod requester;
+
+pub use self::ferox_scanner::{FeroxScanner, RESPONSES};
+pub use self::init::initialize;
+pub use self::utils::PolicyTrigger;
--- a/Show More
+++ b/Show More