Release 23.3 (#2723)

Co-authored-by: L. Kärkkäinen <98187+Tronic@users.noreply.github.com>

.coveragerc

@@ -4,11 +4,12 @@ source = sanic
 omit =
     site-packages
     sanic/__main__.py
+    sanic/server/legacy.py
     sanic/compat.py
-    sanic/reloader_helpers.py
     sanic/simple.py
     sanic/utils.py
     sanic/cli
+    sanic/pages
 
 [html]
 directory = coverage
@@ -21,12 +22,4 @@ exclude_lines =
     NOQA
     pragma: no cover
     TYPE_CHECKING
-omit =
-    site-packages
-    sanic/__main__.py
-    sanic/compat.py
-    sanic/reloader_helpers.py
-    sanic/simple.py
-    sanic/utils.py
-    sanic/cli
 skip_empty = True

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,66 @@
+name: 🐞 Bug report
+description: Create a report to help us improve
+labels: ["bug", "triage"]
+body:
+  - type: checkboxes
+    id: existing
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the bug you encountered.
+      options:
+      - label: I have searched the existing issues
+        required: true
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the bug
+      description: A clear and concise description of what the bug is, make sure to paste any exceptions and tracebacks using markdown code-block syntax to make it easier to read.
+    validations:
+      required: true
+  - type: textarea
+    id: code
+    attributes:
+      label: Code snippet
+      description: Relevant source code, make sure to remove what is not necessary.
+    validations:
+      required: false
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: A concise description of what you expected to happen.
+    validations:
+      required: false
+  - type: dropdown
+    id: running
+    attributes:
+      label: How do you run Sanic?
+      options:
+        - Sanic CLI
+        - As a module
+        - As a script (`app.run` or `Sanic.serve`)
+        - ASGI
+    validations:
+      required: true
+  - type: input
+    id: os
+    attributes:
+      label: Operating System
+      description: What OS?
+    validations:
+      required: true
+  - type: input
+    id: version
+    attributes:
+      label: Sanic Version
+      description: Check startup logs or try `sanic --version`
+    validations:
+      required: true
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional context
+      description: Add any other context about the problem here.
+    validations:
+      required: false
+

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,25 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-
----
-
-**Describe the bug**
-A clear and concise description of what the bug is, make sure to paste any exceptions and tracebacks.
-
-
-**Code snippet**
-Relevant source code, make sure to remove what is not necessary.
-
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-
-**Environment (please complete the following information):**
- - OS: [e.g. iOS]
- - Version [e.g. 0.8.3]
-
-
-**Additional context**
-Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
-blank_issues_enabled: true
+blank_issues_enabled: false
 contact_links:
   - name: Questions and Help
     url: https://community.sanicframework.org/c/questions-and-help
     about: Do you need help with Sanic? Ask your questions here.
+  - name: Discussion and Support
+    url: https://discord.gg/FARQzAEMAA
+    about: For live discussion and support, checkout the Sanic Discord server.

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -0,0 +1,34 @@
+name: 🌟 Feature request
+description: Suggest an enhancement for Sanic
+labels: ["feature request"]
+body:
+  - type: checkboxes
+    id: existing
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please search to see if an issue already exists for the enhancement you are proposing.
+      options:
+      - label: I have searched the existing issues
+        required: true
+  - type: textarea
+    id: description
+    attributes:
+      label: Is your feature request related to a problem? Please describe.
+      description: A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+    validations:
+      required: false
+  - type: textarea
+    id: code
+    attributes:
+      label: Describe the solution you'd like
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional context
+      description: Add any other context about the problem here.
+    validations:
+      required: false
+

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,16 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for Sanic
-
----
-
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-
-**Additional context**
-Add any other context or sample code about the feature request here.

.github/ISSUE_TEMPLATE/rfc.yml

@@ -0,0 +1,33 @@
+name: 💡 Request for Comments
+description: Open an RFC for discussion
+labels: ["RFC"]
+body:
+  - type: input
+    id: compare
+    attributes:
+      label: Link to code
+      description: If available, share a [comparison](https://github.com/sanic-org/sanic/compare) from a POC branch to main
+      placeholder: https://github.com/sanic-org/sanic/compare/main...some-new-branch
+    validations:
+      required: false
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposal
+      description: A thorough discussion of the proposal discussing the problem it solves, potential code, use cases, and impacts
+    validations:
+      required: true
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional context
+      description: Add any other context that is relevant
+    validations:
+      required: false
+  - type: checkboxes
+    id: breaking
+    attributes:
+      label: Is this a breaking change?
+      options:
+        - label: "Yes"
+          required: false

.github/workflows/pr-bandit.yml

@@ -20,6 +20,7 @@ jobs:
           - { python-version: 3.8, tox-env: security}
           - { python-version: 3.9, tox-env: security}
           - { python-version: "3.10", tox-env: security}
+          - { python-version: "3.11", tox-env: security}
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2

.github/workflows/pr-docs.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         config:
-          - {python-version: "3.8", tox-env: "docs"}
+          - {python-version: "3.10", tox-env: "docs"}
       fail-fast: false
 
 

.github/workflows/pr-linter.yml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         config:
-          - { python-version: 3.8, tox-env: lint}
+          - { python-version: "3.10", tox-env: lint}
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2

.github/workflows/pr-python311.yml

@@ -0,0 +1,47 @@
+name: Python 3.11 Tests
+on:
+  pull_request:
+    branches:
+      - main
+      - "*LTS"
+    types: [opened, synchronize, reopened, ready_for_review]
+
+jobs:
+  testPy311:
+    if: github.event.pull_request.draft == false
+    name: ut-${{ matrix.config.tox-env }}-${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
+        config:
+          - {
+              python-version: "3.11",
+              tox-env: py311,
+              ignore-error-flake: "false",
+              command-timeout: "0",
+            }
+          - {
+              python-version: "3.11",
+              tox-env: py311-no-ext,
+              ignore-error-flake: "true",
+              command-timeout: "600000",
+            }
+    steps:
+      - name: Checkout the Repository
+        uses: actions/checkout@v2
+        id: checkout-branch
+
+      - name: Run Unit Tests
+        uses: harshanarayana/custom-actions@main
+        with:
+          python-version: ${{ matrix.config.python-version }}
+          test-infra-tool: tox
+          test-infra-version: latest
+          action: tests
+          test-additional-args: "-e=${{ matrix.config.tox-env }},-vv=''"
+          experimental-ignore-error: "${{ matrix.config.ignore-error-flake }}"
+          command-timeout: "${{ matrix.config.command-timeout }}"
+          test-failure-retry: "3"

.github/workflows/pr-type-check.yml

@@ -20,6 +20,7 @@ jobs:
           - { python-version: 3.8, tox-env: type-checking}
           - { python-version: 3.9, tox-env: type-checking}
           - { python-version: "3.10", tox-env: type-checking}
+          - { python-version: "3.11", tox-env: type-checking}
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2

.github/workflows/pr-windows.yml

@@ -19,6 +19,7 @@ jobs:
           - { python-version: 3.8, tox-env: py38-no-ext }
           - { python-version: 3.9, tox-env: py39-no-ext }
           - { python-version: "3.10", tox-env: py310-no-ext }
+          - { python-version: "3.11", tox-env: py310-no-ext }
           - { python-version: pypy-3.7, tox-env: pypy37-no-ext }
 
     steps:

.github/workflows/publish-images.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps:
       - name: Checkout repository

.github/workflows/publish-package.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: ["3.8"]
+        python-version: ["3.10"]
 
     steps:
       - name: Checkout Repository

CHANGELOG.rst

@@ -313,10 +313,8 @@ Version 21.3.0
     `#2074 <https://github.com/sanic-org/sanic/pull/2074>`_
     Performance adjustments in ``handle_request_``
 
-Version 20.12.3 🔷
+Version 20.12.3
-------------------
+---------------
-
-`Current LTS version`
 
 **Bugfixes**
 
@@ -350,8 +348,8 @@ Version 19.12.5
     `#2027 <https://github.com/sanic-org/sanic/pull/2027>`_
     Remove old chardet requirement, add in hard multidict requirement
 
-Version 20.12.0 🔹
+Version 20.12.0
------------------
+---------------
 
 **Features**
 

CODE_OF_CONDUCT.md

@@ -55,7 +55,7 @@ further defined and clarified by project maintainers.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at sanic-maintainers@googlegroups.com. All
+reported by contacting the project team at adam@sanicframework.org. All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.

CONTRIBUTING.rst

@@ -71,9 +71,9 @@ To execute only unittests, run ``tox`` with environment like so:
 
 .. code-block:: bash
 
-   tox -e py36 -v -- tests/test_config.py
-   # or
    tox -e py37 -v -- tests/test_config.py
+   # or
+   tox -e py310 -v -- tests/test_config.py
 
 Run lint checks
 ---------------

README.rst

@@ -102,9 +102,6 @@ Installation
   If you are running on a clean install of Fedora 28 or above, please make sure you have the ``redhat-rpm-config`` package installed in case if you want to
   use ``sanic`` with ``ujson`` dependency.
 
-.. note::
-
-  Windows support is currently "experimental" and on a best-effort basis. Multiple workers are also not currently supported on Windows (see `Issue #1517 <https://github.com/sanic-org/sanic/issues/1517>`_), but setting ``workers=1`` should launch the server successfully.
 
 Hello World Example
 -------------------

SECURITY.md

@@ -4,31 +4,42 @@
 
 Sanic releases long term support release once a year in December. LTS releases receive bug and security updates for **24 months**. Interim releases throughout the year occur every three months, and are supported until the subsequent interim release.
 
-| Version | LTS           | Supported          |
-| ------- | ------------- | ------------------ |
-| 20.12   | until 2022-12 | :heavy_check_mark: |
-| 20.9    |               | :x:                |
-| 20.6    |               | :x:                |
-| 20.3    |               | :x:                |
-| 19.12   | until 2021-12 | :white_check_mark: |
-| 19.9    |               | :x:                |
-| 19.6    |               | :x:                |
-| 19.3    |               | :x:                |
-| 18.12   |               | :x:                |
-| 0.8.3   |               | :x:                |
-| 0.7.0   |               | :x:                |
-| 0.6.0   |               | :x:                |
-| 0.5.4   |               | :x:                |
-| 0.4.1   |               | :x:                |
-| 0.3.1   |               | :x:                |
-| 0.2.0   |               | :x:                |
-| 0.1.9   |               | :x:                |
 
-:white_check_mark: = security/bug fixes
+| Version | LTS           | Supported               |
-:heavy_check_mark: = full support
+| ------- | ------------- | ----------------------- |
+| 22.12   | until 2024-12 | :white_check_mark:      |
+| 22.9    |               | :x:                     |
+| 22.6    |               | :x:                     |
+| 22.3    |               | :x:                     |
+| 21.12   | until 2023-12 | :ballot_box_with_check: |
+| 21.9    |               | :x:                     |
+| 21.6    |               | :x:                     |
+| 21.3    |               | :x:                     |
+| 20.12   |               | :x:                     |
+| 20.9    |               | :x:                     |
+| 20.6    |               | :x:                     |
+| 20.3    |               | :x:                     |
+| 19.12   |               | :x:                     |
+| 19.9    |               | :x:                     |
+| 19.6    |               | :x:                     |
+| 19.3    |               | :x:                     |
+| 18.12   |               | :x:                     |
+| 0.8.3   |               | :x:                     |
+| 0.7.0   |               | :x:                     |
+| 0.6.0   |               | :x:                     |
+| 0.5.4   |               | :x:                     |
+| 0.4.1   |               | :x:                     |
+| 0.3.1   |               | :x:                     |
+| 0.2.0   |               | :x:                     |
+| 0.1.9   |               | :x:                     |
+
+:ballot_box_with_check: = security/bug fixes 
+:white_check_mark: = full support
 
 ## Reporting a Vulnerability
 
 If you discover a security vulnerability, we ask that you **do not** create an issue on GitHub. Instead, please [send a message to the core-devs](https://community.sanicframework.org/g/core-devs) on the community forums. Once logged in, you can send a message to the core-devs by clicking the message button.
 
+Alternatively, you can send a private message to Adam Hopkins on Discord. Find him on the [Sanic discord server](https://discord.gg/FARQzAEMAA).
+
 This will help to not publicize the issue until the team can address it and resolve it.

codecov.yml

@@ -15,10 +15,10 @@ codecov:
 ignore:
   - "sanic/__main__.py"
   - "sanic/compat.py"
-  - "sanic/reloader_helpers.py"
   - "sanic/simple.py"
   - "sanic/utils.py"
-  - "sanic/cli"
+  - "sanic/cli/"
+  - "sanic/pages/"
   - ".github/"
   - "changelogs/"
   - "docker/"

docs/_static/custom.css

@@ -2,3 +2,12 @@
 .wy-nav-top {
   background: #444444;
 }
+
+#changelog section {
+  padding-left: 3rem;
+}
+
+#changelog section h2,
+#changelog section h3 {
+  margin-left: -3rem;
+}

docs/sanic/changelog.rst

@@ -1,6 +1,13 @@
 📜 Changelog
 ============
 
+| 🔶 Current release
+| 🔷 In support release
+|
+
+.. mdinclude:: ./releases/23/23.3.md
+.. mdinclude:: ./releases/22/22.12.md
+.. mdinclude:: ./releases/22/22.9.md
 .. mdinclude:: ./releases/22/22.6.md
 .. mdinclude:: ./releases/22/22.3.md
 .. mdinclude:: ./releases/21/21.12.md

docs/sanic/releases/22/22.12.md

@@ -0,0 +1,55 @@
+## Version 22.12.0 🔷
+
+_Current version_
+
+### Features
+
+- [#2569](https://github.com/sanic-org/sanic/pull/2569) Add `JSONResponse` class with some convenient methods when updating a response object
+- [#2598](https://github.com/sanic-org/sanic/pull/2598) Change `uvloop` requirement to `>=0.15.0`
+- [#2609](https://github.com/sanic-org/sanic/pull/2609) Add compatibility with `websockets` v11.0
+- [#2610](https://github.com/sanic-org/sanic/pull/2610) Kill server early on worker error
+    - Raise deadlock timeout to 30s
+- [#2617](https://github.com/sanic-org/sanic/pull/2617) Scale number of running server workers
+- [#2621](https://github.com/sanic-org/sanic/pull/2621) [#2634](https://github.com/sanic-org/sanic/pull/2634) Send `SIGKILL` on subsequent `ctrl+c` to force worker exit
+- [#2622](https://github.com/sanic-org/sanic/pull/2622) Add API to restart all workers from the multiplexer
+- [#2624](https://github.com/sanic-org/sanic/pull/2624) Default to `spawn` for all subprocesses unless specifically set:
+    ```python
+    from sanic import Sanic
+    
+    Sanic.start_method = "fork"
+    ```
+- [#2625](https://github.com/sanic-org/sanic/pull/2625) Filename normalisation of form-data/multipart file uploads
+- [#2626](https://github.com/sanic-org/sanic/pull/2626) Move to HTTP Inspector:
+    - Remote access to inspect running Sanic instances
+    - TLS support for encrypted calls to Inspector
+    - Authentication to Inspector with API key
+    - Ability to extend Inspector with custom commands
+- [#2632](https://github.com/sanic-org/sanic/pull/2632) Control order of restart operations
+- [#2633](https://github.com/sanic-org/sanic/pull/2633) Move reload interval to class variable
+- [#2636](https://github.com/sanic-org/sanic/pull/2636) Add `priority` to `register_middleware` method
+- [#2639](https://github.com/sanic-org/sanic/pull/2639) Add `unquote` to `add_route` method
+- [#2640](https://github.com/sanic-org/sanic/pull/2640) ASGI websockets to receive `text` or `bytes`
+
+
+### Bugfixes
+
+- [#2607](https://github.com/sanic-org/sanic/pull/2607) Force socket shutdown before close to allow rebinding
+- [#2590](https://github.com/sanic-org/sanic/pull/2590) Use actual `StrEnum` in Python 3.11+
+- [#2615](https://github.com/sanic-org/sanic/pull/2615) Ensure middleware executes only once per request timeout
+- [#2627](https://github.com/sanic-org/sanic/pull/2627) Crash ASGI application on lifespan failure
+- [#2635](https://github.com/sanic-org/sanic/pull/2635) Resolve error with low-level server creation on Windows
+
+
+### Deprecations and Removals
+
+- [#2608](https://github.com/sanic-org/sanic/pull/2608) [#2630](https://github.com/sanic-org/sanic/pull/2630) Signal conditions and triggers saved on `signal.extra` 
+- [#2626](https://github.com/sanic-org/sanic/pull/2626) Move to HTTP Inspector
+    - 🚨 *BREAKING CHANGE*: Moves the Inspector to a Sanic app from a simple TCP socket with a custom protocol
+    - *DEPRECATE*: The `--inspect*` commands have been deprecated in favor of `inspect ...` commands
+- [#2628](https://github.com/sanic-org/sanic/pull/2628) Replace deprecated `distutils.strtobool`
+
+
+### Developer infrastructure
+
+- [#2612](https://github.com/sanic-org/sanic/pull/2612) Add CI testing for Python 3.11
+

docs/sanic/releases/22/22.6.md

@@ -1,6 +1,17 @@
-## Version 22.6.0 🔶
+## Version 22.6.2
 
-_Current version_
+### Bugfixes
+
+- [#2522](https://github.com/sanic-org/sanic/pull/2522) Always show server location in ASGI
+
+## Version 22.6.1
+
+### Bugfixes
+
+- [#2477](https://github.com/sanic-org/sanic/pull/2477) Sanic static directory fails when folder name ends with ".."
+
+
+## Version 22.6.0
 
 ### Features
 - [#2378](https://github.com/sanic-org/sanic/pull/2378) Introduce HTTP/3 and autogeneration of TLS certificates in `DEBUG` mode

docs/sanic/releases/22/22.9.md

@@ -0,0 +1,74 @@
+## Version 22.9.1
+
+### Features
+
+- [#2585](https://github.com/sanic-org/sanic/pull/2585) Improved error message when no applications have been registered
+
+
+### Bugfixes
+
+- [#2578](https://github.com/sanic-org/sanic/pull/2578) Add certificate loader for in process certificate creation
+- [#2591](https://github.com/sanic-org/sanic/pull/2591) Do not use sentinel identity for `spawn` compatibility
+- [#2592](https://github.com/sanic-org/sanic/pull/2592) Fix properties in nested blueprint groups
+- [#2595](https://github.com/sanic-org/sanic/pull/2595) Introduce sleep interval on new worker reloader
+
+
+### Deprecations and Removals
+
+
+### Developer infrastructure
+
+- [#2588](https://github.com/sanic-org/sanic/pull/2588) Markdown templates on issue forms
+
+
+### Improved Documentation
+
+- [#2556](https://github.com/sanic-org/sanic/pull/2556) v22.9 documentation
+- [#2582](https://github.com/sanic-org/sanic/pull/2582) Cleanup documentation on Windows support
+
+
+## Version 22.9.0
+
+### Features
+
+- [#2445](https://github.com/sanic-org/sanic/pull/2445) Add custom loads function 
+- [#2490](https://github.com/sanic-org/sanic/pull/2490) Make `WebsocketImplProtocol` async iterable
+- [#2499](https://github.com/sanic-org/sanic/pull/2499) Sanic Server WorkerManager refactor
+- [#2506](https://github.com/sanic-org/sanic/pull/2506) Use `pathlib` for path resolution (for static file serving)
+- [#2508](https://github.com/sanic-org/sanic/pull/2508) Use `path.parts` instead of `match` (for static file serving)
+- [#2513](https://github.com/sanic-org/sanic/pull/2513) Better request cancel handling
+- [#2516](https://github.com/sanic-org/sanic/pull/2516) Add request properties for HTTP method info:
+    - `request.is_safe`
+    - `request.is_idempotent`
+    - `request.is_cacheable`
+    - *See* [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods) *for more information about when these apply*
+- [#2522](https://github.com/sanic-org/sanic/pull/2522) Always show server location in ASGI
+- [#2526](https://github.com/sanic-org/sanic/pull/2526) Cache control support for static files for returning 304 when appropriate
+- [#2533](https://github.com/sanic-org/sanic/pull/2533) Refactor `_static_request_handler`
+- [#2540](https://github.com/sanic-org/sanic/pull/2540) Add signals before and after handler execution
+    - `http.handler.before`
+    - `http.handler.after`
+- [#2542](https://github.com/sanic-org/sanic/pull/2542) Add *[redacted]* to CLI :)
+- [#2546](https://github.com/sanic-org/sanic/pull/2546) Add deprecation warning filter
+- [#2550](https://github.com/sanic-org/sanic/pull/2550) Middleware priority and performance enhancements
+
+### Bugfixes
+
+- [#2495](https://github.com/sanic-org/sanic/pull/2495) Prevent directory traversion with static files
+- [#2515](https://github.com/sanic-org/sanic/pull/2515) Do not apply double slash to paths in certain static dirs in Blueprints
+
+### Deprecations and Removals
+
+- [#2525](https://github.com/sanic-org/sanic/pull/2525) Warn on duplicate route names, will be prevented outright in v23.3
+- [#2537](https://github.com/sanic-org/sanic/pull/2537) Raise warning and deprecation notice on duplicate exceptions, will be prevented outright in v23.3
+
+### Developer infrastructure
+
+- [#2504](https://github.com/sanic-org/sanic/pull/2504) Cleanup test suite
+- [#2505](https://github.com/sanic-org/sanic/pull/2505) Replace Unsupported Python Version Number from the Contributing Doc
+- [#2530](https://github.com/sanic-org/sanic/pull/2530) Do not include tests folder in installed package resolver
+
+### Improved Documentation
+
+- [#2502](https://github.com/sanic-org/sanic/pull/2502) Fix a few typos
+- [#2517](https://github.com/sanic-org/sanic/pull/2517) [#2536](https://github.com/sanic-org/sanic/pull/2536) Add some type hints

docs/sanic/releases/23/23.3.md

@@ -0,0 +1,53 @@
+## Version 23.3.0 🔶
+
+### Features
+- [#2545](https://github.com/sanic-org/sanic/pull/2545) Standardize init of exceptions for more consistent control of HTTP responses using exceptions
+- [#2606](https://github.com/sanic-org/sanic/pull/2606) Decode headers as UTF-8 also in ASGI
+- [#2646](https://github.com/sanic-org/sanic/pull/2646) Separate ASGI request and lifespan callables
+- [#2659](https://github.com/sanic-org/sanic/pull/2659) Use ``FALLBACK_ERROR_FORMAT`` for handlers that return ``empty()``
+- [#2662](https://github.com/sanic-org/sanic/pull/2662) Add basic file browser (HTML page) and auto-index serving
+- [#2667](https://github.com/sanic-org/sanic/pull/2667) Nicer traceback formatting (HTML page)
+- [#2668](https://github.com/sanic-org/sanic/pull/2668) Smarter error page rendering format selection; more reliant upon header and "common sense" defaults
+- [#2680](https://github.com/sanic-org/sanic/pull/2680) Check the status of socket before shutting down with ``SHUT_RDWR``
+- [#2687](https://github.com/sanic-org/sanic/pull/2687) Refresh ``Request.accept`` functionality to be more performant and spec-compliant
+- [#2696](https://github.com/sanic-org/sanic/pull/2696) Add header accessors as properties
+    ```
+    Example-Field: Foo, Bar
+    Example-Field: Baz
+    ```
+    ```python
+    request.headers.example_field == "Foo, Bar,Baz"
+    ```
+- [#2700](https://github.com/sanic-org/sanic/pull/2700) Simpler CLI targets
+
+    ```sh
+    $ sanic path.to.module:app          # global app instance
+    $ sanic path.to.module:create_app   # factory pattern
+    $ sanic ./path/to/directory/        # simple serve
+    ```
+- [#2701](https://github.com/sanic-org/sanic/pull/2701) API to define a number of workers in managed processes
+- [#2704](https://github.com/sanic-org/sanic/pull/2704) Add convenience for dynamic changes to routing
+- [#2706](https://github.com/sanic-org/sanic/pull/2706) Add convenience methods for cookie creation and deletion
+    
+    ```python
+    response = text("...")
+    response.add_cookie("test", "It worked!", domain=".yummy-yummy-cookie.com")
+    ```
+- [#2707](https://github.com/sanic-org/sanic/pull/2707) Simplified ``parse_content_header`` escaping to be RFC-compliant and remove outdated FF hack
+- [#2710](https://github.com/sanic-org/sanic/pull/2710) Stricter charset handling and escaping of request URLs
+- [#2711](https://github.com/sanic-org/sanic/pull/2711) Consume body on ``DELETE`` by default
+- [#2719](https://github.com/sanic-org/sanic/pull/2719) Allow ``password`` to be passed to TLS context
+- [#2720](https://github.com/sanic-org/sanic/pull/2720) Skip middleware on ``RequestCancelled``
+- [#2721](https://github.com/sanic-org/sanic/pull/2721) Change access logging format to ``%s``
+- [#2722](https://github.com/sanic-org/sanic/pull/2722) Add ``CertLoader`` as application option for directly controlling ``SSLContext`` objects
+- [#2725](https://github.com/sanic-org/sanic/pull/2725) Worker sync state tolerance on race condition
+
+### Bugfixes
+- [#2651](https://github.com/sanic-org/sanic/pull/2651) ASGI websocket to pass thru bytes as is
+- [#2697](https://github.com/sanic-org/sanic/pull/2697) Fix comparison between datetime aware and naive in ``file`` when using ``If-Modified-Since``
+
+### Deprecations and Removals
+- [#2666](https://github.com/sanic-org/sanic/pull/2666) Remove deprecated ``__blueprintname__`` property
+
+### Improved Documentation
+- [#2712](https://github.com/sanic-org/sanic/pull/2712) Improved example using ``'https'`` to create the redirect

examples/http_redirect.py

@@ -29,7 +29,7 @@ def proxy(request, path):
         path=path,
         _server=https.config.SERVER_NAME,
         _external=True,
-        _scheme="http",
+        _scheme="https",
     )
     return response.redirect(url)
 

examples/unix_socket.py

@@ -1,6 +1,3 @@
-import os
-import socket
-
 from sanic import Sanic, response
 
 
@@ -13,13 +10,4 @@ async def test(request):
 
 
 if __name__ == "__main__":
-    server_address = "./uds_socket"
+    app.run(unix="./uds_socket")
-    # Make sure the socket does not already exist
-    try:
-        os.unlink(server_address)
-    except OSError:
-        if os.path.exists(server_address):
-            raise
-    sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-    sock.bind(server_address)
-    app.run(sock=sock)

pyproject.toml

@@ -22,5 +22,8 @@ module = [
     "httptools.*",
     "trustme.*",
     "sanic_routing.*",
+    "aioquic.*",
+    "html5tagger.*",
+    "tracerite.*",
 ]
 ignore_missing_imports = true

sanic/__init__.py

@@ -2,20 +2,66 @@ from sanic.__version__ import __version__
 from sanic.app import Sanic
 from sanic.blueprints import Blueprint
 from sanic.constants import HTTPMethod
+from sanic.exceptions import (
+    BadRequest,
+    ExpectationFailed,
+    FileNotFound,
+    Forbidden,
+    HeaderNotFound,
+    InternalServerError,
+    InvalidHeader,
+    MethodNotAllowed,
+    NotFound,
+    RangeNotSatisfiable,
+    SanicException,
+    ServerError,
+    ServiceUnavailable,
+    Unauthorized,
+)
 from sanic.request import Request
-from sanic.response import HTTPResponse, html, json, text
+from sanic.response import (
+    HTTPResponse,
+    empty,
+    file,
+    html,
+    json,
+    raw,
+    redirect,
+    text,
+)
 from sanic.server.websockets.impl import WebsocketImplProtocol as Websocket
 
 
 __all__ = (
     "__version__",
+    # Common objects
     "Sanic",
     "Blueprint",
     "HTTPMethod",
     "HTTPResponse",
     "Request",
     "Websocket",
+    # Common exceptions
+    "BadRequest",
+    "ExpectationFailed",
+    "FileNotFound",
+    "Forbidden",
+    "HeaderNotFound",
+    "InternalServerError",
+    "InvalidHeader",
+    "MethodNotAllowed",
+    "NotFound",
+    "RangeNotSatisfiable",
+    "SanicException",
+    "ServerError",
+    "ServiceUnavailable",
+    "Unauthorized",
+    # Common response methods
+    "empty",
+    "file",
     "html",
     "json",
+    "raw",
+    "redirect",
     "text",
 )

sanic/__main__.py

@@ -6,10 +6,10 @@ if OS_IS_WINDOWS:
     enable_windows_color_support()
 
 
-def main():
+def main(args=None):
     cli = SanicCLI()
     cli.attach()
-    cli.run()
+    cli.run(args)
 
 
 if __name__ == "__main__":

sanic/__version__.py

@@ -1 +1 @@
-__version__ = "22.6.1"
+__version__ = "23.3.0"

sanic/app.py

@@ -16,9 +16,10 @@ from asyncio import (
 )
 from asyncio.futures import Future
 from collections import defaultdict, deque
-from contextlib import suppress
+from contextlib import contextmanager, suppress
 from functools import partial
 from inspect import isawaitable
+from os import environ
 from socket import socket
 from traceback import format_exc
 from types import SimpleNamespace
@@ -32,6 +33,7 @@ from typing import (
     Deque,
     Dict,
     Iterable,
+    Iterator,
     List,
     Optional,
     Set,
@@ -41,14 +43,13 @@ from typing import (
     Union,
 )
 from urllib.parse import urlencode, urlunparse
-from warnings import filterwarnings
 
 from sanic_routing.exceptions import FinalizationError, NotFound
 from sanic_routing.route import Route
 
 from sanic.application.ext import setup_ext
-from sanic.application.state import ApplicationState, Mode, ServerStage
+from sanic.application.state import ApplicationState, ServerStage
-from sanic.asgi import ASGIApp
+from sanic.asgi import ASGIApp, Lifespan
 from sanic.base.root import BaseSanic
 from sanic.blueprint_group import BlueprintGroup
 from sanic.blueprints import Blueprint
@@ -61,16 +62,13 @@ from sanic.exceptions import (
     URLBuildError,
 )
 from sanic.handlers import ErrorHandler
-from sanic.helpers import _default
+from sanic.helpers import Default, _default
 from sanic.http import Stage
-from sanic.log import (
+from sanic.log import LOGGING_CONFIG_DEFAULTS, error_logger, logger
-    LOGGING_CONFIG_DEFAULTS,
+from sanic.middleware import Middleware, MiddlewareLocation
-    deprecation,
-    error_logger,
-    logger,
-)
 from sanic.mixins.listeners import ListenerEvent
-from sanic.mixins.runner import RunnerMixin
+from sanic.mixins.startup import StartupMixin
+from sanic.mixins.static import StaticHandleMixin
 from sanic.models.futures import (
     FutureException,
     FutureListener,
@@ -78,7 +76,6 @@ from sanic.models.futures import (
     FutureRegistry,
     FutureRoute,
     FutureSignal,
-    FutureStatic,
 )
 from sanic.models.handler_types import ListenerType, MiddlewareType
 from sanic.models.handler_types import Sanic as SanicVar
@@ -88,6 +85,10 @@ from sanic.router import Router
 from sanic.server.websockets.impl import ConnectionClosed
 from sanic.signals import Signal, SignalRouter
 from sanic.touchup import TouchUp, TouchUpMeta
+from sanic.types.shared_ctx import SharedContext
+from sanic.worker.inspector import Inspector
+from sanic.worker.loader import CertLoader
+from sanic.worker.manager import WorkerManager
 
 
 if TYPE_CHECKING:
@@ -101,10 +102,8 @@ if TYPE_CHECKING:
 if OS_IS_WINDOWS:  # no cov
     enable_windows_color_support()
 
-filterwarnings("once", category=DeprecationWarning)
 
-
+class Sanic(StaticHandleMixin, BaseSanic, StartupMixin, metaclass=TouchUpMeta):
-class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     """
     The main application instance
     """
@@ -117,6 +116,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     )
     __slots__ = (
         "_asgi_app",
+        "_asgi_lifespan",
         "_asgi_client",
         "_blueprint_order",
         "_delayed_tasks",
@@ -128,23 +128,29 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         "_future_routes",
         "_future_signals",
         "_future_statics",
+        "_inspector",
+        "_manager",
         "_state",
         "_task_registry",
         "_test_client",
         "_test_manager",
         "blueprints",
+        "certloader_class",
         "config",
         "configure_logging",
         "ctx",
         "error_handler",
+        "inspector_class",
         "go_fast",
         "listeners",
+        "multiplexer",
         "named_request_middleware",
         "named_response_middleware",
         "request_class",
         "request_middleware",
         "response_middleware",
         "router",
+        "shared_ctx",
         "signal_router",
         "sock",
         "strict_slashes",
@@ -153,12 +159,11 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     )
 
     _app_registry: Dict[str, "Sanic"] = {}
-    _uvloop_setting = None  # TODO: Remove in v22.6
     test_mode = False
 
     def __init__(
         self,
-        name: str = None,
+        name: Optional[str] = None,
         config: Optional[Config] = None,
         ctx: Optional[Any] = None,
         router: Optional[Router] = None,
@@ -171,9 +176,11 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         configure_logging: bool = True,
         dumps: Optional[Callable[..., AnyStr]] = None,
         loads: Optional[Callable[..., Any]] = None,
+        inspector: bool = False,
+        inspector_class: Optional[Type[Inspector]] = None,
+        certloader_class: Optional[Type[CertLoader]] = None,
     ) -> None:
         super().__init__(name=name)
-
         # logging
         if configure_logging:
             dict_config = log_config or LOGGING_CONFIG_DEFAULTS
@@ -187,12 +194,18 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         # First setup config
         self.config: Config = config or Config(env_prefix=env_prefix)
+        if inspector:
+            self.config.INSPECTOR = inspector
 
         # Then we can do the rest
+        self._asgi_app: Optional[ASGIApp] = None
+        self._asgi_lifespan: Optional[Lifespan] = None
         self._asgi_client: Any = None
         self._blueprint_order: List[Blueprint] = []
         self._delayed_tasks: List[str] = []
         self._future_registry: FutureRegistry = FutureRegistry()
+        self._inspector: Optional[Inspector] = None
+        self._manager: Optional[WorkerManager] = None
         self._state: ApplicationState = ApplicationState(app=self)
         self._task_registry: Dict[str, Task] = {}
         self._test_client: Any = None
@@ -200,9 +213,13 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         self.asgi = False
         self.auto_reload = False
         self.blueprints: Dict[str, Blueprint] = {}
+        self.certloader_class: Type[CertLoader] = (
+            certloader_class or CertLoader
+        )
         self.configure_logging: bool = configure_logging
         self.ctx: Any = ctx or SimpleNamespace()
         self.error_handler: ErrorHandler = error_handler or ErrorHandler()
+        self.inspector_class: Type[Inspector] = inspector_class or Inspector
         self.listeners: Dict[str, List[ListenerType[Any]]] = defaultdict(list)
         self.named_request_middleware: Dict[str, Deque[MiddlewareType]] = {}
         self.named_response_middleware: Dict[str, Deque[MiddlewareType]] = {}
@@ -210,6 +227,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         self.request_middleware: Deque[MiddlewareType] = deque()
         self.response_middleware: Deque[MiddlewareType] = deque()
         self.router: Router = router or Router()
+        self.shared_ctx: SharedContext = SharedContext()
         self.signal_router: SignalRouter = signal_router or SignalRouter()
         self.sock: Optional[socket] = None
         self.strict_slashes: bool = strict_slashes
@@ -243,7 +261,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
             )
         try:
             return get_running_loop()
-        except RuntimeError:
+        except RuntimeError:  # no cov
             if sys.version_info > (3, 10):
                 return asyncio.get_event_loop_policy().get_event_loop()
             else:
@@ -282,8 +300,12 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         return listener
 
     def register_middleware(
-        self, middleware: MiddlewareType, attach_to: str = "request"
+        self,
-    ) -> MiddlewareType:
+        middleware: Union[MiddlewareType, Middleware],
+        attach_to: str = "request",
+        *,
+        priority: Union[Default, int] = _default,
+    ) -> Union[MiddlewareType, Middleware]:
         """
         Register an application level middleware that will be attached
         to all the API URLs registered under this application.
@@ -299,19 +321,37 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
             **response** - Invoke before the response is returned back
         :return: decorated method
         """
-        if attach_to == "request":
+        retval = middleware
+        location = MiddlewareLocation[attach_to.upper()]
+
+        if not isinstance(middleware, Middleware):
+            middleware = Middleware(
+                middleware,
+                location=location,
+                priority=priority if isinstance(priority, int) else 0,
+            )
+        elif middleware.priority != priority and isinstance(priority, int):
+            middleware = Middleware(
+                middleware.func,
+                location=middleware.location,
+                priority=priority,
+            )
+
+        if location is MiddlewareLocation.REQUEST:
             if middleware not in self.request_middleware:
                 self.request_middleware.append(middleware)
-        if attach_to == "response":
+        if location is MiddlewareLocation.RESPONSE:
             if middleware not in self.response_middleware:
                 self.response_middleware.appendleft(middleware)
-        return middleware
+        return retval
 
     def register_named_middleware(
         self,
         middleware: MiddlewareType,
         route_names: Iterable[str],
         attach_to: str = "request",
+        *,
+        priority: Union[Default, int] = _default,
     ):
         """
         Method for attaching middleware to specific routes. This is mainly an
@@ -325,19 +365,35 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
             defaults to "request"
         :type attach_to: str, optional
         """
-        if attach_to == "request":
+        retval = middleware
+        location = MiddlewareLocation[attach_to.upper()]
+
+        if not isinstance(middleware, Middleware):
+            middleware = Middleware(
+                middleware,
+                location=location,
+                priority=priority if isinstance(priority, int) else 0,
+            )
+        elif middleware.priority != priority and isinstance(priority, int):
+            middleware = Middleware(
+                middleware.func,
+                location=middleware.location,
+                priority=priority,
+            )
+
+        if location is MiddlewareLocation.REQUEST:
             for _rn in route_names:
                 if _rn not in self.named_request_middleware:
                     self.named_request_middleware[_rn] = deque()
                 if middleware not in self.named_request_middleware[_rn]:
                     self.named_request_middleware[_rn].append(middleware)
-        if attach_to == "response":
+        if location is MiddlewareLocation.RESPONSE:
             for _rn in route_names:
                 if _rn not in self.named_response_middleware:
                     self.named_response_middleware[_rn] = deque()
                 if middleware not in self.named_response_middleware[_rn]:
                     self.named_response_middleware[_rn].appendleft(middleware)
-        return middleware
+        return retval
 
     def _apply_exception_handler(
         self,
@@ -379,36 +435,36 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         ctx = params.pop("route_context")
 
-        routes = self.router.add(**params)
+        with self.amend():
-        if isinstance(routes, Route):
+            routes = self.router.add(**params)
-            routes = [routes]
+            if isinstance(routes, Route):
+                routes = [routes]
 
-        for r in routes:
+            for r in routes:
-            r.ctx.websocket = websocket
+                r.extra.websocket = websocket
-            r.ctx.static = params.get("static", False)
+                r.extra.static = params.get("static", False)
-            r.ctx.__dict__.update(ctx)
+                r.ctx.__dict__.update(ctx)
 
         return routes
 
-    def _apply_static(self, static: FutureStatic) -> Route:
-        return self._register_static(static)
-
     def _apply_middleware(
         self,
         middleware: FutureMiddleware,
         route_names: Optional[List[str]] = None,
     ):
-        if route_names:
+        with self.amend():
-            return self.register_named_middleware(
+            if route_names:
-                middleware.middleware, route_names, middleware.attach_to
+                return self.register_named_middleware(
-            )
+                    middleware.middleware, route_names, middleware.attach_to
-        else:
+                )
-            return self.register_middleware(
+            else:
-                middleware.middleware, middleware.attach_to
+                return self.register_middleware(
-            )
+                    middleware.middleware, middleware.attach_to
+                )
 
     def _apply_signal(self, signal: FutureSignal) -> Signal:
-        return self.signal_router.add(*signal)
+        with self.amend():
+            return self.signal_router.add(*signal)
 
     def dispatch(
         self,
@@ -458,9 +514,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
     def blueprint(
         self,
-        blueprint: Union[
+        blueprint: Union[Blueprint, Iterable[Blueprint], BlueprintGroup],
-            Blueprint, List[Blueprint], Tuple[Blueprint], BlueprintGroup
-        ],
         **options: Any,
     ):
         """Register a blueprint on the application.
@@ -469,21 +523,20 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         :param options: option dictionary with blueprint defaults
         :return: Nothing
         """
-        if isinstance(blueprint, (list, tuple, BlueprintGroup)):
+        if isinstance(blueprint, (Iterable, BlueprintGroup)):
             for item in blueprint:
                 params = {**options}
                 if isinstance(blueprint, BlueprintGroup):
-                    if blueprint.url_prefix:
+                    merge_from = [
-                        merge_from = [
+                        options.get("url_prefix", ""),
-                            options.get("url_prefix", ""),
+                        blueprint.url_prefix or "",
-                            blueprint.url_prefix,
+                    ]
-                        ]
+                    if not isinstance(item, BlueprintGroup):
-                        if not isinstance(item, BlueprintGroup):
+                        merge_from.append(item.url_prefix or "")
-                            merge_from.append(item.url_prefix or "")
+                    merged_prefix = "/".join(
-                        merged_prefix = "/".join(
+                        u.strip("/") for u in merge_from if u
-                            u.strip("/") for u in merge_from
+                    ).rstrip("/")
-                        ).rstrip("/")
+                    params["url_prefix"] = f"/{merged_prefix}"
-                        params["url_prefix"] = f"/{merged_prefix}"
 
                     for _attr in ["version", "strict_slashes"]:
                         if getattr(item, _attr) is None:
@@ -581,7 +634,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         uri = route.path
 
-        if getattr(route.ctx, "static", None):
+        if getattr(route.extra, "static", None):
             filename = kwargs.pop("filename", "")
             # it's static folder
             if "__file_uri__" in uri:
@@ -614,18 +667,18 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         host = kwargs.pop("_host", None)
         external = kwargs.pop("_external", False) or bool(host)
         scheme = kwargs.pop("_scheme", "")
-        if route.ctx.hosts and external:
+        if route.extra.hosts and external:
-            if not host and len(route.ctx.hosts) > 1:
+            if not host and len(route.extra.hosts) > 1:
                 raise ValueError(
-                    f"Host is ambiguous: {', '.join(route.ctx.hosts)}"
+                    f"Host is ambiguous: {', '.join(route.extra.hosts)}"
                 )
-            elif host and host not in route.ctx.hosts:
+            elif host and host not in route.extra.hosts:
                 raise ValueError(
                     f"Requested host ({host}) is not available for this "
-                    f"route: {route.ctx.hosts}"
+                    f"route: {route.extra.hosts}"
                 )
             elif not host:
-                host = list(route.ctx.hosts)[0]
+                host = list(route.extra.hosts)[0]
 
         if scheme and not external:
             raise ValueError("When specifying _scheme, _external must be True")
@@ -701,7 +754,10 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     # -------------------------------------------------------------------- #
 
     async def handle_exception(
-        self, request: Request, exception: BaseException
+        self,
+        request: Request,
+        exception: BaseException,
+        run_middleware: bool = True,
     ):  # no cov
         """
         A handler that catches specific exceptions and outputs a response.
@@ -710,6 +766,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         :param exception: The exception that was raised
         :raises ServerError: response 500
         """
+        response = None
         await self.dispatch(
             "http.lifecycle.exception",
             inline=True,
@@ -750,9 +807,11 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         # -------------------------------------------- #
         # Request Middleware
         # -------------------------------------------- #
-        response = await self._run_request_middleware(
+        if run_middleware:
-            request, request_name=None
+            middleware = (
-        )
+                request.route and request.route.extra.request_middleware
+            ) or self.request_middleware
+            response = await self._run_request_middleware(request, middleware)
         # No middleware results
         if not response:
             try:
@@ -824,6 +883,8 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         :param request: HTTP Request object
         :return: Nothing
         """
+        __tracebackhide__ = True
+
         await self.dispatch(
             "http.lifecycle.handle",
             inline=True,
@@ -832,9 +893,15 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         # Define `response` var here to remove warnings about
         # allocation before assignment below.
-        response = None
+        response: Optional[
+            Union[
+                BaseHTTPResponse,
+                Coroutine[Any, Any, Optional[BaseHTTPResponse]],
+                ResponseStream,
+            ]
+        ] = None
+        run_middleware = True
         try:
-
             await self.dispatch(
                 "http.routing.before",
                 inline=True,
@@ -864,9 +931,8 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
             if (
                 request.stream
                 and request.stream.request_body
-                and not route.ctx.ignore_body
+                and not route.extra.ignore_body
             ):
-
                 if hasattr(handler, "is_stream"):
                     # Streaming handler: lift the size limit
                     request.stream.request_max_size = float("inf")
@@ -877,9 +943,11 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
             # -------------------------------------------- #
             # Request Middleware
             # -------------------------------------------- #
-            response = await self._run_request_middleware(
+            run_middleware = False
-                request, request_name=route.name
+            if request.route.extra.request_middleware:
-            )
+                response = await self._run_request_middleware(
+                    request, request.route.extra.request_middleware
+                )
 
             # No middleware results
             if not response:
@@ -896,9 +964,19 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
                     )
 
                 # Run response handler
+                await self.dispatch(
+                    "http.handler.before",
+                    inline=True,
+                    context={"request": request},
+                )
                 response = handler(request, **request.match_info)
                 if isawaitable(response):
                     response = await response
+                await self.dispatch(
+                    "http.handler.after",
+                    inline=True,
+                    context={"request": request},
+                )
 
             if request.responded:
                 if response is not None:
@@ -910,7 +988,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
                 if request.stream is not None:
                     response = request.stream.response
             elif response is not None:
-                response = await request.respond(response)
+                response = await request.respond(response)  # type: ignore
             elif not hasattr(handler, "is_websocket"):
                 response = request.stream.response  # type: ignore
 
@@ -949,7 +1027,9 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
             raise
         except Exception as e:
             # Response Generation Failed
-            await self.handle_exception(request, e)
+            await self.handle_exception(
+                request, e, run_middleware=run_middleware
+            )
 
     async def _websocket_handler(
         self, handler, request, *args, subprotocols=None, **kwargs
@@ -999,7 +1079,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     def asgi_client(self):  # noqa
         """
         A testing client that uses ASGI to reach into the application to
-        execute hanlers.
+        execute handlers.
 
         :return: testing client
         :rtype: :class:`SanicASGITestClient`
@@ -1018,86 +1098,72 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     # -------------------------------------------------------------------- #
 
     async def _run_request_middleware(
-        self, request, request_name=None
+        self, request, middleware_collection
     ):  # no cov
-        # The if improves speed.  I don't know why
+        request._request_middleware_started = True
-        named_middleware = self.named_request_middleware.get(
-            request_name, deque()
-        )
-        applicable_middleware = self.request_middleware + named_middleware
 
-        # request.request_middleware_started is meant as a stop-gap solution
+        for middleware in middleware_collection:
-        # until RFC 1630 is adopted
+            await self.dispatch(
-        if applicable_middleware and not request.request_middleware_started:
+                "http.middleware.before",
-            request.request_middleware_started = True
+                inline=True,
+                context={
+                    "request": request,
+                    "response": None,
+                },
+                condition={"attach_to": "request"},
+            )
 
-            for middleware in applicable_middleware:
+            response = middleware(request)
-                await self.dispatch(
+            if isawaitable(response):
-                    "http.middleware.before",
+                response = await response
-                    inline=True,
-                    context={
-                        "request": request,
-                        "response": None,
-                    },
-                    condition={"attach_to": "request"},
-                )
 
-                response = middleware(request)
+            await self.dispatch(
-                if isawaitable(response):
+                "http.middleware.after",
-                    response = await response
+                inline=True,
+                context={
+                    "request": request,
+                    "response": None,
+                },
+                condition={"attach_to": "request"},
+            )
 
-                await self.dispatch(
+            if response:
-                    "http.middleware.after",
+                return response
-                    inline=True,
-                    context={
-                        "request": request,
-                        "response": None,
-                    },
-                    condition={"attach_to": "request"},
-                )
-
-                if response:
-                    return response
         return None
 
     async def _run_response_middleware(
-        self, request, response, request_name=None
+        self, request, response, middleware_collection
     ):  # no cov
-        named_middleware = self.named_response_middleware.get(
+        for middleware in middleware_collection:
-            request_name, deque()
+            await self.dispatch(
-        )
+                "http.middleware.before",
-        applicable_middleware = self.response_middleware + named_middleware
+                inline=True,
-        if applicable_middleware:
+                context={
-            for middleware in applicable_middleware:
+                    "request": request,
-                await self.dispatch(
+                    "response": response,
-                    "http.middleware.before",
+                },
-                    inline=True,
+                condition={"attach_to": "response"},
-                    context={
+            )
-                        "request": request,
-                        "response": response,
-                    },
-                    condition={"attach_to": "response"},
-                )
 
-                _response = middleware(request, response)
+            _response = middleware(request, response)
-                if isawaitable(_response):
+            if isawaitable(_response):
-                    _response = await _response
+                _response = await _response
 
-                await self.dispatch(
+            await self.dispatch(
-                    "http.middleware.after",
+                "http.middleware.after",
-                    inline=True,
+                inline=True,
-                    context={
+                context={
-                        "request": request,
+                    "request": request,
-                        "response": _response if _response else response,
+                    "response": _response if _response else response,
-                    },
+                },
-                    condition={"attach_to": "response"},
+                condition={"attach_to": "response"},
-                )
+            )
 
-                if _response:
+            if _response:
-                    response = _response
+                response = _response
-                    if isinstance(response, BaseHTTPResponse):
+                if isinstance(response, BaseHTTPResponse):
-                        response = request.stream.respond(response)
+                    response = request.stream.respond(response)
-                    break
+                break
         return response
 
     def _build_endpoint_name(self, *parts):
@@ -1184,7 +1250,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         *,
         name: Optional[str] = None,
         register: bool = True,
-    ) -> Optional[Task]:
+    ) -> Optional[Task[Any]]:
         """
         Schedule a task to run later, after the loop has started.
         Different from asyncio.ensure_future in that it does not
@@ -1194,7 +1260,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         `See user guide re: background tasks
         <https://sanicframework.org/guide/basics/tasks.html#background-tasks>`__
 
-        :param task: future, couroutine or awaitable
+        :param task: future, coroutine or awaitable
         """
         try:
             loop = self.loop  # Will raise SanicError if loop is not started
@@ -1291,12 +1357,14 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         three arguments: scope, receive, send. See the ASGI reference for more
         details: https://asgi.readthedocs.io/en/latest
         """
-        self.asgi = True
         if scope["type"] == "lifespan":
+            self.asgi = True
             self.motd("")
-        self._asgi_app = await ASGIApp.create(self, scope, receive, send)
+            self._asgi_lifespan = Lifespan(self, scope, receive, send)
-        asgi_app = self._asgi_app
+            await self._asgi_lifespan()
-        await asgi_app()
+        else:
+            self._asgi_app = await ASGIApp.create(self, scope, receive, send)
+            await self._asgi_app()
 
     _asgi_single_callable = True  # We conform to ASGI 3.0 single-callable
 
@@ -1315,7 +1383,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         self.config.update_config(config)
 
     @property
-    def asgi(self):
+    def asgi(self) -> bool:
         return self.state.asgi
 
     @asgi.setter
@@ -1326,18 +1394,6 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     def debug(self):
         return self.state.is_debug
 
-    @debug.setter
-    def debug(self, value: bool):
-        deprecation(
-            "Setting the value of a Sanic application's debug value directly "
-            "is deprecated and will be removed in v22.9. Please set it using "
-            "the CLI, app.run, app.prepare, or directly set "
-            "app.state.mode to Mode.DEBUG.",
-            22.9,
-        )
-        mode = Mode.DEBUG if value else Mode.PRODUCTION
-        self.state.mode = mode
-
     @property
     def auto_reload(self):
         return self.config.AUTO_RELOAD
@@ -1345,6 +1401,7 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
     @auto_reload.setter
     def auto_reload(self, value: bool):
         self.config.AUTO_RELOAD = value
+        self.state.auto_reload = value
 
     @property
     def state(self) -> ApplicationState:  # type: ignore
@@ -1353,58 +1410,6 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         """
         return self._state
 
-    @property
-    def is_running(self):
-        deprecation(
-            "Use of the is_running property is no longer used by Sanic "
-            "internally. The property is now deprecated and will be removed "
-            "in version 22.9. You may continue to set the property for your "
-            "own needs until that time. If you would like to check whether "
-            "the application is operational, please use app.state.stage. More "
-            "information is available at ___.",
-            22.9,
-        )
-        return self.state.is_running
-
-    @is_running.setter
-    def is_running(self, value: bool):
-        deprecation(
-            "Use of the is_running property is no longer used by Sanic "
-            "internally. The property is now deprecated and will be removed "
-            "in version 22.9. You may continue to set the property for your "
-            "own needs until that time. If you would like to check whether "
-            "the application is operational, please use app.state.stage. More "
-            "information is available at ___.",
-            22.9,
-        )
-        self.state.is_running = value
-
-    @property
-    def is_stopping(self):
-        deprecation(
-            "Use of the is_stopping property is no longer used by Sanic "
-            "internally. The property is now deprecated and will be removed "
-            "in version 22.9. You may continue to set the property for your "
-            "own needs until that time. If you would like to check whether "
-            "the application is operational, please use app.state.stage. More "
-            "information is available at ___.",
-            22.9,
-        )
-        return self.state.is_stopping
-
-    @is_stopping.setter
-    def is_stopping(self, value: bool):
-        deprecation(
-            "Use of the is_stopping property is no longer used by Sanic "
-            "internally. The property is now deprecated and will be removed "
-            "in version 22.9. You may continue to set the property for your "
-            "own needs until that time. If you would like to check whether "
-            "the application is operational, please use app.state.stage. More "
-            "information is available at ___.",
-            22.9,
-        )
-        self.state.is_stopping = value
-
     @property
     def reload_dirs(self):
         return self.state.reload_dirs
@@ -1462,6 +1467,18 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         cls._app_registry[name] = app
 
+    @classmethod
+    def unregister_app(cls, app: "Sanic") -> None:
+        """
+        Unregister a Sanic instance
+        """
+        if not isinstance(app, cls):
+            raise SanicException("Registered app must be an instance of Sanic")
+
+        name = app.name
+        if name in cls._app_registry:
+            del cls._app_registry[name]
+
     @classmethod
     def get_app(
         cls, name: Optional[str] = None, *, force_create: bool = False
@@ -1481,20 +1498,61 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
         try:
             return cls._app_registry[name]
         except KeyError:
+            if name == "__main__":
+                return cls.get_app("__mp_main__", force_create=force_create)
             if force_create:
                 return cls(name)
-            raise SanicException(f'Sanic app name "{name}" not found.')
+            raise SanicException(
+                f"Sanic app name '{name}' not found.\n"
+                "App instantiation must occur outside "
+                "if __name__ == '__main__' "
+                "block or by using an AppLoader.\nSee "
+                "https://sanic.dev/en/guide/deployment/app-loader.html"
+                " for more details."
+            )
+
+    @classmethod
+    def _check_uvloop_conflict(cls) -> None:
+        values = {app.config.USE_UVLOOP for app in cls._app_registry.values()}
+        if len(values) > 1:
+            error_logger.warning(
+                "It looks like you're running several apps with different "
+                "uvloop settings. This is not supported and may lead to "
+                "unintended behaviour."
+            )
 
     # -------------------------------------------------------------------- #
     # Lifecycle
     # -------------------------------------------------------------------- #
 
+    @contextmanager
+    def amend(self) -> Iterator[None]:
+        """
+        If the application has started, this function allows changes
+        to be made to add routes, middleware, and signals.
+        """
+        if not self.state.is_started:
+            yield
+        else:
+            do_router = self.router.finalized
+            do_signal_router = self.signal_router.finalized
+            if do_router:
+                self.router.reset()
+            if do_signal_router:
+                self.signal_router.reset()
+            yield
+            if do_signal_router:
+                self.signalize(self.config.TOUCHUP)
+            if do_router:
+                self.finalize()
+
     def finalize(self):
         try:
             self.router.finalize()
         except FinalizationError as e:
             if not Sanic.test_mode:
                 raise e
+        self.finalize_middleware()
 
     def signalize(self, allow_fail_builtin=True):
         self.signal_router.allow_fail_builtin = allow_fail_builtin
@@ -1514,24 +1572,29 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         if self.state.is_debug and self.config.TOUCHUP is not True:
             self.config.TOUCHUP = False
-        elif self.config.TOUCHUP is _default:
+        elif isinstance(self.config.TOUCHUP, Default):
             self.config.TOUCHUP = True
 
         # Setup routers
         self.signalize(self.config.TOUCHUP)
         self.finalize()
 
-        # TODO: Replace in v22.6 to check against apps in app registry
+        route_names = [route.extra.ident for route in self.router.routes]
-        if (
+        duplicates = {
-            self.__class__._uvloop_setting is not None
+            name for name in route_names if route_names.count(name) > 1
-            and self.__class__._uvloop_setting != self.config.USE_UVLOOP
+        }
-        ):
+        if duplicates:
-            error_logger.warning(
+            names = ", ".join(duplicates)
-                "It looks like you're running several apps with different "
+            message = (
-                "uvloop settings. This is not supported and may lead to "
+                f"Duplicate route names detected: {names}. You should rename "
-                "unintended behaviour."
+                "one or more of them explicitly by using the `name` param, "
+                "or changing the implicit name derived from the class and "
+                "function name. For more details, please see "
+                "https://sanic.dev/en/guide/release-notes/v23.3.html#duplicated-route-names-are-no-longer-allowed"  # noqa
             )
-        self.__class__._uvloop_setting = self.config.USE_UVLOOP
+            raise ServerError(message)
+
+        Sanic._check_uvloop_conflict()
 
         # Startup time optimizations
         if self.state.primary:
@@ -1542,6 +1605,10 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
 
         self.state.is_started = True
 
+    def ack(self):
+        if hasattr(self, "multiplexer"):
+            self.multiplexer.ack()
+
     async def _server_event(
         self,
         concern: str,
@@ -1570,3 +1637,43 @@ class Sanic(BaseSanic, RunnerMixin, metaclass=TouchUpMeta):
                 "loop": loop,
             },
         )
+
+    # -------------------------------------------------------------------- #
+    # Process Management
+    # -------------------------------------------------------------------- #
+
+    def refresh(
+        self,
+        passthru: Optional[Dict[str, Any]] = None,
+    ):
+        registered = self.__class__.get_app(self.name)
+        if self is not registered:
+            if not registered.state.server_info:
+                registered.state.server_info = self.state.server_info
+            self = registered
+        if passthru:
+            for attr, info in passthru.items():
+                if isinstance(info, dict):
+                    for key, value in info.items():
+                        setattr(getattr(self, attr), key, value)
+                else:
+                    setattr(self, attr, info)
+        if hasattr(self, "multiplexer"):
+            self.shared_ctx.lock()
+        return self
+
+    @property
+    def inspector(self):
+        if environ.get("SANIC_WORKER_PROCESS") or not self._inspector:
+            raise SanicException(
+                "Can only access the inspector from the main process"
+            )
+        return self._inspector
+
+    @property
+    def manager(self):
+        if environ.get("SANIC_WORKER_PROCESS") or not self._manager:
+            raise SanicException(
+                "Can only access the manager from the main process"
+            )
+        return self._manager

sanic/application/constants.py

@@ -1,15 +1,24 @@
 from enum import Enum, IntEnum, auto
 
 
-class StrEnum(str, Enum):
+class StrEnum(str, Enum):  # no cov
     def _generate_next_value_(name: str, *args) -> str:  # type: ignore
         return name.lower()
 
+    def __eq__(self, value: object) -> bool:
+        value = str(value).upper()
+        return super().__eq__(value)
+
+    def __hash__(self) -> int:
+        return hash(self.value)
+
+    def __str__(self) -> str:
+        return self.value
+
 
 class Server(StrEnum):
     SANIC = auto()
     ASGI = auto()
-    GUNICORN = auto()
 
 
 class Mode(StrEnum):

sanic/application/ext.py

@@ -8,11 +8,6 @@ from typing import TYPE_CHECKING
 if TYPE_CHECKING:
     from sanic import Sanic
 
-    try:
-        from sanic_ext import Extend  # type: ignore
-    except ImportError:
-        ...
-
 
 def setup_ext(app: Sanic, *, fail: bool = False, **kwargs):
     if not app.config.AUTO_EXTEND:
@@ -22,7 +17,7 @@ def setup_ext(app: Sanic, *, fail: bool = False, **kwargs):
     with suppress(ModuleNotFoundError):
         sanic_ext = import_module("sanic_ext")
 
-    if not sanic_ext:
+    if not sanic_ext:  # no cov
         if fail:
             raise RuntimeError(
                 "Sanic Extensions is not installed. You can add it to your "
@@ -33,7 +28,7 @@ def setup_ext(app: Sanic, *, fail: bool = False, **kwargs):
         return
 
     if not getattr(app, "_ext", None):
-        Ext: Extend = getattr(sanic_ext, "Extend")
+        Ext = getattr(sanic_ext, "Extend")
         app._ext = Ext(app, **kwargs)
 
         return app.ext

sanic/application/logo.py

@@ -40,6 +40,8 @@ FULL_COLOR_LOGO = """
 
 """  # noqa
 
+SVG_LOGO_SIMPLE = """<svg id=logo-simple viewBox="0 0 964 279"><desc>Sanic</desc><path d="M107 222c9-2 10-20 1-22s-20-2-30-2-17 7-16 14 6 10 15 10h30zm115-1c16-2 30-11 35-23s6-24 2-33-6-14-15-20-24-11-38-10c-7 3-10 13-5 19s17-1 24 4 15 14 13 24-5 15-14 18-50 0-74 0h-17c-6 4-10 15-4 20s16 2 23 3zM251 83q9-1 9-7 0-15-10-16h-13c-10 6-10 20 0 22zM147 60c-4 0-10 3-11 11s5 13 10 12 42 0 67 0c5-3 7-10 6-15s-4-8-9-8zm-33 1c-8 0-16 0-24 3s-20 10-25 20-6 24-4 36 15 22 26 27 78 8 94 3c4-4 4-12 0-18s-69 8-93-10c-8-7-9-23 0-30s12-10 20-10 12 2 16-3 1-15-5-18z" fill="#ff0d68"/><path d="M676 74c0-14-18-9-20 0s0 30 0 39 20 9 20 2zm-297-10c-12 2-15 12-23 23l-41 58H340l22-30c8-12 23-13 30-4s20 24 24 38-10 10-17 10l-68 2q-17 1-48 30c-7 6-10 20 0 24s15-8 20-13 20 -20 58-21h50 c20 2 33 9 52 30 8 10 24-4 16-13L384 65q-3-2-5-1zm131 0c-10 1-12 12-11 20v96c1 10-3 23 5 32s20-5 17-15c0-23-3-46 2-67 5-12 22-14 32-5l103 87c7 5 19 1 18-9v-64c-3-10-20-9-21 2s-20 22-30 13l-97-80c-5-4-10-10-18-10zM701 76v128c2 10 15 12 20 4s0-102 0-124s-20-18-20-7z M850 63c-35 0-69-2-86 15s-20 60-13 66 13 8 16 0 1-10 1-27 12-26 20-32 66-5 85-5 31 4 31-10-18-7-54-7M764 159c-6-2-15-2-16 12s19 37 33 43 23 8 25-4-4-11-11-14q-9-3-22-18c-4-7-3-16-10-19zM828 196c-4 0-8 1-10 5s-4 12 0 15 8 2 12 2h60c5 0 10-2 12-6 3-7-1-16-8-16z" fill="#1f1f1f"/></svg>"""  # noqa
+
 ansi_pattern = re.compile(r"\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])")
 
 

sanic/application/motd.py

@@ -80,20 +80,23 @@ class MOTDTTY(MOTD):
         )
         self.display_length = self.key_width + self.value_width + 2
 
-    def display(self):
+    def display(self, version=True, action="Goin' Fast", out=None):
-        version = f"Sanic v{__version__}".center(self.centering_length)
+        if not out:
+            out = logger.info
+        header = "Sanic"
+        if version:
+            header += f" v{__version__}"
+        header = header.center(self.centering_length)
         running = (
-            f"Goin' Fast @ {self.serve_location}"
+            f"{action} @ {self.serve_location}" if self.serve_location else ""
-            if self.serve_location
-            else ""
         ).center(self.centering_length)
-        length = len(version) + 2 - self.logo_line_length
+        length = len(header) + 2 - self.logo_line_length
         first_filler = "─" * (self.logo_line_length - 1)
         second_filler = "─" * length
         display_filler = "─" * (self.display_length + 2)
         lines = [
             f"\n┌{first_filler}─{second_filler}┐",
-            f"│ {version} │",
+            f"│ {header} │",
             f"│ {running} │",
             f"├{first_filler}┬{second_filler}┤",
         ]
@@ -107,7 +110,7 @@ class MOTDTTY(MOTD):
         self._render_fill(lines)
 
         lines.append(f"└{first_filler}┴{second_filler}┘\n")
-        logger.info(indent("\n".join(lines), "  "))
+        out(indent("\n".join(lines), "  "))
 
     def _render_data(self, lines, data, start):
         offset = 0

sanic/asgi.py

@@ -3,13 +3,12 @@ from __future__ import annotations
 import warnings
 
 from typing import TYPE_CHECKING, Optional
-from urllib.parse import quote
 
 from sanic.compat import Header
-from sanic.exceptions import ServerError
+from sanic.exceptions import BadRequest, ServerError
-from sanic.helpers import _default
+from sanic.helpers import Default
 from sanic.http import Stage
-from sanic.log import logger
+from sanic.log import error_logger, logger
 from sanic.models.asgi import ASGIReceive, ASGIScope, ASGISend, MockTransport
 from sanic.request import Request
 from sanic.response import BaseHTTPResponse
@@ -22,13 +21,15 @@ if TYPE_CHECKING:
 
 
 class Lifespan:
-    def __init__(self, asgi_app: ASGIApp) -> None:
+    def __init__(
-        self.asgi_app = asgi_app
+        self, sanic_app, scope: ASGIScope, receive: ASGIReceive, send: ASGISend
+    ) -> None:
+        self.sanic_app = sanic_app
+        self.scope = scope
+        self.receive = receive
+        self.send = send
 
-        if (
+        if "server.init.before" in self.sanic_app.signal_router.name_index:
-            "server.init.before"
-            in self.asgi_app.sanic_app.signal_router.name_index
-        ):
             logger.debug(
                 'You have set a listener for "before_server_start" '
                 "in ASGI mode. "
@@ -36,10 +37,7 @@ class Lifespan:
                 "the ASGI server is started.",
                 extra={"verbosity": 1},
             )
-        if (
+        if "server.shutdown.after" in self.sanic_app.signal_router.name_index:
-            "server.shutdown.after"
-            in self.asgi_app.sanic_app.signal_router.name_index
-        ):
             logger.debug(
                 'You have set a listener for "after_server_stop" '
                 "in ASGI mode. "
@@ -57,11 +55,11 @@ class Lifespan:
         in sequence since the ASGI lifespan protocol only supports a single
         startup event.
         """
-        await self.asgi_app.sanic_app._startup()
+        await self.sanic_app._startup()
-        await self.asgi_app.sanic_app._server_event("init", "before")
+        await self.sanic_app._server_event("init", "before")
-        await self.asgi_app.sanic_app._server_event("init", "after")
+        await self.sanic_app._server_event("init", "after")
 
-        if self.asgi_app.sanic_app.config.USE_UVLOOP is not _default:
+        if not isinstance(self.sanic_app.config.USE_UVLOOP, Default):
             warnings.warn(
                 "You have set the USE_UVLOOP configuration option, but Sanic "
                 "cannot control the event loop when running in ASGI mode."
@@ -77,21 +75,33 @@ class Lifespan:
         in sequence since the ASGI lifespan protocol only supports a single
         shutdown event.
         """
-        await self.asgi_app.sanic_app._server_event("shutdown", "before")
+        await self.sanic_app._server_event("shutdown", "before")
-        await self.asgi_app.sanic_app._server_event("shutdown", "after")
+        await self.sanic_app._server_event("shutdown", "after")
 
-    async def __call__(
+    async def __call__(self) -> None:
-        self, scope: ASGIScope, receive: ASGIReceive, send: ASGISend
+        while True:
-    ) -> None:
+            message = await self.receive()
-        message = await receive()
+            if message["type"] == "lifespan.startup":
-        if message["type"] == "lifespan.startup":
+                try:
-            await self.startup()
+                    await self.startup()
-            await send({"type": "lifespan.startup.complete"})
+                except Exception as e:
-
+                    error_logger.exception(e)
-        message = await receive()
+                    await self.send(
-        if message["type"] == "lifespan.shutdown":
+                        {"type": "lifespan.startup.failed", "message": str(e)}
-            await self.shutdown()
+                    )
-            await send({"type": "lifespan.shutdown.complete"})
+                else:
+                    await self.send({"type": "lifespan.startup.complete"})
+            elif message["type"] == "lifespan.shutdown":
+                try:
+                    await self.shutdown()
+                except Exception as e:
+                    error_logger.exception(e)
+                    await self.send(
+                        {"type": "lifespan.shutdown.failed", "message": str(e)}
+                    )
+                else:
+                    await self.send({"type": "lifespan.shutdown.complete"})
+                return
 
 
 class ASGIApp:
@@ -103,73 +113,78 @@ class ASGIApp:
     stage: Stage
     response: Optional[BaseHTTPResponse]
 
-    def __init__(self) -> None:
-        self.ws = None
-
     @classmethod
     async def create(
-        cls, sanic_app, scope: ASGIScope, receive: ASGIReceive, send: ASGISend
+        cls,
-    ) -> "ASGIApp":
+        sanic_app: Sanic,
+        scope: ASGIScope,
+        receive: ASGIReceive,
+        send: ASGISend,
+    ) -> ASGIApp:
         instance = cls()
+        instance.ws = None
         instance.sanic_app = sanic_app
         instance.transport = MockTransport(scope, receive, send)
         instance.transport.loop = sanic_app.loop
         instance.stage = Stage.IDLE
         instance.response = None
+        instance.sanic_app.state.is_started = True
         setattr(instance.transport, "add_task", sanic_app.loop.create_task)
 
-        headers = Header(
+        try:
-            [
+            headers = Header(
-                (key.decode("latin-1"), value.decode("latin-1"))
+                [
-                for key, value in scope.get("headers", [])
+                    (
-            ]
+                        key.decode("ASCII"),
-        )
+                        value.decode(errors="surrogateescape"),
-        instance.lifespan = Lifespan(instance)
+                    )
+                    for key, value in scope.get("headers", [])
+                ]
+            )
+        except UnicodeDecodeError:
+            raise BadRequest(
+                "Header names can only contain US-ASCII characters"
+            )
 
-        if scope["type"] == "lifespan":
+        if scope["type"] == "http":
-            await instance.lifespan(scope, receive, send)
+            version = scope["http_version"]
+            method = scope["method"]
+        elif scope["type"] == "websocket":
+            version = "1.1"
+            method = "GET"
+
+            instance.ws = instance.transport.create_websocket_connection(
+                send, receive
+            )
         else:
-            path = (
+            raise ServerError("Received unknown ASGI scope")
-                scope["path"][1:]
-                if scope["path"].startswith("/")
-                else scope["path"]
-            )
-            url = "/".join([scope.get("root_path", ""), quote(path)])
-            url_bytes = url.encode("latin-1")
-            url_bytes += b"?" + scope["query_string"]
 
-            if scope["type"] == "http":
+        url_bytes, query = scope["raw_path"], scope["query_string"]
-                version = scope["http_version"]
+        if query:
-                method = scope["method"]
+            # httpx ASGI client sends query string as part of raw_path
-            elif scope["type"] == "websocket":
+            url_bytes = url_bytes.split(b"?", 1)[0]
-                version = "1.1"
+            # All servers send them separately
-                method = "GET"
+            url_bytes = b"%b?%b" % (url_bytes, query)
 
-                instance.ws = instance.transport.create_websocket_connection(
+        request_class = sanic_app.request_class or Request
-                    send, receive
+        instance.request = request_class(
-                )
+            url_bytes,
-            else:
+            headers,
-                raise ServerError("Received unknown ASGI scope")
+            version,
+            method,
+            instance.transport,
+            sanic_app,
+        )
+        instance.request.stream = instance  # type: ignore
+        instance.request_body = True
+        instance.request.conn_info = ConnInfo(instance.transport)
 
-            request_class = sanic_app.request_class or Request
+        await instance.sanic_app.dispatch(
-            instance.request = request_class(
+            "http.lifecycle.request",
-                url_bytes,
+            inline=True,
-                headers,
+            context={"request": instance.request},
-                version,
+            fail_not_found=False,
-                method,
+        )
-                instance.transport,
-                sanic_app,
-            )
-            instance.request.stream = instance
-            instance.request_body = True
-            instance.request.conn_info = ConnInfo(instance.transport)
-
-            await sanic_app.dispatch(
-                "http.lifecycle.request",
-                inline=True,
-                context={"request": instance.request},
-                fail_not_found=False,
-            )
 
         return instance
 
@@ -234,4 +249,7 @@ class ASGIApp:
             self.stage = Stage.HANDLER
             await self.sanic_app.handle_request(self.request)
         except Exception as e:
-            await self.sanic_app.handle_exception(self.request, e)
+            try:
+                await self.sanic_app.handle_exception(self.request, e)
+            except Exception as exc:
+                await self.sanic_app.handle_exception(self.request, exc, False)

sanic/base/root.py

@@ -1,6 +1,6 @@
 import re
 
-from typing import Any
+from typing import Any, Optional
 
 from sanic.base.meta import SanicMeta
 from sanic.exceptions import SanicException
@@ -9,6 +9,7 @@ from sanic.mixins.listeners import ListenerMixin
 from sanic.mixins.middleware import MiddlewareMixin
 from sanic.mixins.routes import RouteMixin
 from sanic.mixins.signals import SignalMixin
+from sanic.mixins.static import StaticMixin
 
 
 VALID_NAME = re.compile(r"^[a-zA-Z_][a-zA-Z0-9_\-]*$")
@@ -16,6 +17,7 @@ VALID_NAME = re.compile(r"^[a-zA-Z_][a-zA-Z0-9_\-]*$")
 
 class BaseSanic(
     RouteMixin,
+    StaticMixin,
     MiddlewareMixin,
     ListenerMixin,
     ExceptionMixin,
@@ -24,7 +26,9 @@ class BaseSanic(
 ):
     __slots__ = ("name",)
 
-    def __init__(self, name: str = None, *args: Any, **kwargs: Any) -> None:
+    def __init__(
+        self, name: Optional[str] = None, *args: Any, **kwargs: Any
+    ) -> None:
         class_name = self.__class__.__name__
 
         if name is None:

sanic/blueprints.py

@@ -93,6 +93,7 @@ class Blueprint(BaseSanic):
         "_future_listeners",
         "_future_exceptions",
         "_future_signals",
+        "copied_from",
         "ctx",
         "exceptions",
         "host",
@@ -118,6 +119,7 @@ class Blueprint(BaseSanic):
     ):
         super().__init__(name=name)
         self.reset()
+        self.copied_from = ""
         self.ctx = SimpleNamespace()
         self.host = host
         self.strict_slashes = strict_slashes
@@ -213,6 +215,7 @@ class Blueprint(BaseSanic):
         self.reset()
         new_bp = deepcopy(self)
         new_bp.name = name
+        new_bp.copied_from = self.name
 
         if not isinstance(url_prefix, Default):
             new_bp.url_prefix = url_prefix
@@ -304,11 +307,8 @@ class Blueprint(BaseSanic):
 
         # Routes
         for future in self._future_routes:
-            # attach the blueprint name to the handler so that it can be
-            # prefixed properly in the router
-            future.handler.__blueprintname__ = self.name
             # Prepend the blueprint URI prefix if available
-            uri = url_prefix + future.uri if url_prefix else future.uri
+            uri = self._setup_uri(future.uri, url_prefix)
 
             version_prefix = self.version_prefix
             for prefix in (
@@ -333,7 +333,7 @@ class Blueprint(BaseSanic):
 
             apply_route = FutureRoute(
                 future.handler,
-                uri[1:] if uri.startswith("//") else uri,
+                uri,
                 future.methods,
                 host,
                 strict_slashes,
@@ -355,6 +355,16 @@ class Blueprint(BaseSanic):
 
             registered.add(apply_route)
             route = app._apply_route(apply_route)
+
+            # If it is a copied BP, then make sure all of the names of routes
+            # matchup with the new BP name
+            if self.copied_from:
+                for r in route:
+                    r.name = r.name.replace(self.copied_from, self.name)
+                    r.extra.ident = r.extra.ident.replace(
+                        self.copied_from, self.name
+                    )
+
             operation = (
                 routes.extend if isinstance(route, list) else routes.append
             )
@@ -363,7 +373,7 @@ class Blueprint(BaseSanic):
         # Static Files
         for future in self._future_statics:
             # Prepend the blueprint URI prefix if available
-            uri = url_prefix + future.uri if url_prefix else future.uri
+            uri = self._setup_uri(future.uri, url_prefix)
             apply_route = FutureStatic(uri, *future[1:])
 
             if (self, apply_route) in app._future_registry:
@@ -406,7 +416,7 @@ class Blueprint(BaseSanic):
 
         self.routes += [route for route in routes if isinstance(route, Route)]
         self.websocket_routes += [
-            route for route in self.routes if route.ctx.websocket
+            route for route in self.routes if route.extra.websocket
         ]
         self.middlewares += middleware
         self.exceptions += exception_handlers
@@ -442,7 +452,7 @@ class Blueprint(BaseSanic):
             events.add(signal.ctx.event)
 
         return asyncio.wait(
-            [event.wait() for event in events],
+            [asyncio.create_task(event.wait()) for event in events],
             return_when=asyncio.FIRST_COMPLETED,
             timeout=timeout,
         )
@@ -456,6 +466,18 @@ class Blueprint(BaseSanic):
                 break
         return value
 
+    @staticmethod
+    def _setup_uri(base: str, prefix: Optional[str]):
+        uri = base
+        if prefix:
+            uri = prefix
+            if base.startswith("/") and prefix.endswith("/"):
+                uri += base[1:]
+            else:
+                uri += base
+
+        return uri[1:] if uri.startswith("//") else uri
+
     @staticmethod
     def register_futures(
         apps: Set[Sanic], bp: Blueprint, futures: Sequence[Tuple[Any, ...]]

sanic/cli/app.py

@@ -2,21 +2,19 @@ import os
 import shutil
 import sys
 
-from argparse import ArgumentParser, RawTextHelpFormatter
+from argparse import Namespace
-from importlib import import_module
+from functools import partial
-from pathlib import Path
 from textwrap import indent
-from typing import Any, List, Union
+from typing import List, Union
 
 from sanic.app import Sanic
 from sanic.application.logo import get_logo
 from sanic.cli.arguments import Group
+from sanic.cli.base import SanicArgumentParser, SanicHelpFormatter
+from sanic.cli.inspector import make_inspector_parser
+from sanic.cli.inspector_client import InspectorClient
 from sanic.log import error_logger
-from sanic.simple import create_simple_server
+from sanic.worker.loader import AppLoader
-
-
-class SanicArgumentParser(ArgumentParser):
-    ...
 
 
 class SanicCLI:
@@ -25,17 +23,22 @@ class SanicCLI:
 {get_logo(True)}
 
 To start running a Sanic application, provide a path to the module, where
-app is a Sanic() instance:
+app is a Sanic() instance in the global scope:
 
     $ sanic path.to.server:app
 
+If the Sanic instance variable is called 'app', you can leave off the last
+part, and only provide a path to the module where the instance is:
+
+    $ sanic path.to.server
+
 Or, a path to a callable that returns a Sanic() instance:
 
-    $ sanic path.to.factory:create_app --factory
+    $ sanic path.to.factory:create_app
 
 Or, a path to a directory to run as a simple HTTP server:
 
-    $ sanic ./path/to/static --simple
+    $ sanic ./path/to/static
 """,
         prefix=" ",
     )
@@ -45,7 +48,7 @@ Or, a path to a directory to run as a simple HTTP server:
         self.parser = SanicArgumentParser(
             prog="sanic",
             description=self.DESCRIPTION,
-            formatter_class=lambda prog: RawTextHelpFormatter(
+            formatter_class=lambda prog: SanicHelpFormatter(
                 prog,
                 max_help_position=36 if width > 96 else 24,
                 indent_increment=4,
@@ -57,22 +60,37 @@ Or, a path to a directory to run as a simple HTTP server:
         self.main_process = (
             os.environ.get("SANIC_RELOADER_PROCESS", "") != "true"
         )
-        self.args: List[Any] = []
+        self.args: Namespace = Namespace()
         self.groups: List[Group] = []
+        self.inspecting = False
 
     def attach(self):
+        if len(sys.argv) > 1 and sys.argv[1] == "inspect":
+            self.inspecting = True
+            self.parser.description = get_logo(True)
+            make_inspector_parser(self.parser)
+            return
+
         for group in Group._registry:
             instance = group.create(self.parser)
             instance.attach()
             self.groups.append(instance)
 
-    def run(self):
+    def run(self, parse_args=None):
-        # This is to provide backwards compat -v to display version
+        if self.inspecting:
-        legacy_version = len(sys.argv) == 2 and sys.argv[-1] == "-v"
+            self._inspector()
-        parse_args = ["--version"] if legacy_version else None
+            return
 
+        legacy_version = False
         if not parse_args:
-            parsed, unknown = self.parser.parse_known_args()
+            # This is to provide backwards compat -v to display version
+            legacy_version = len(sys.argv) == 2 and sys.argv[-1] == "-v"
+            parse_args = ["--version"] if legacy_version else None
+        elif parse_args == ["-v"]:
+            parse_args = ["--version"]
+
+        if not legacy_version:
+            parsed, unknown = self.parser.parse_known_args(args=parse_args)
             if unknown and parsed.factory:
                 for arg in unknown:
                     if arg.startswith("--"):
@@ -80,20 +98,58 @@ Or, a path to a directory to run as a simple HTTP server:
 
         self.args = self.parser.parse_args(args=parse_args)
         self._precheck()
+        app_loader = AppLoader(
+            self.args.target, self.args.factory, self.args.simple, self.args
+        )
 
         try:
-            app = self._get_app()
+            app = self._get_app(app_loader)
             kwargs = self._build_run_kwargs()
-        except ValueError:
+        except ValueError as e:
-            error_logger.exception("Failed to run app")
+            error_logger.exception(f"Failed to run app: {e}")
         else:
             for http_version in self.args.http:
                 app.prepare(**kwargs, version=http_version)
+            if self.args.single:
+                serve = Sanic.serve_single
+            else:
+                serve = partial(Sanic.serve, app_loader=app_loader)
+            serve(app)
 
-            Sanic.serve()
+    def _inspector(self):
+        args = sys.argv[2:]
+        self.args, unknown = self.parser.parse_known_args(args=args)
+        if unknown:
+            for arg in unknown:
+                if arg.startswith("--"):
+                    try:
+                        key, value = arg.split("=")
+                        key = key.lstrip("-")
+                    except ValueError:
+                        value = False if arg.startswith("--no-") else True
+                        key = (
+                            arg.replace("--no-", "")
+                            .lstrip("-")
+                            .replace("-", "_")
+                        )
+                    setattr(self.args, key, value)
+
+        kwargs = {**self.args.__dict__}
+        host = kwargs.pop("host")
+        port = kwargs.pop("port")
+        secure = kwargs.pop("secure")
+        raw = kwargs.pop("raw")
+        action = kwargs.pop("action") or "info"
+        api_key = kwargs.pop("api_key")
+        positional = kwargs.pop("positional", None)
+        if action == "<custom>" and positional:
+            action = positional[0]
+            if len(positional) > 1:
+                kwargs["args"] = positional[1:]
+        InspectorClient(host, port, secure, raw, api_key).do(action, **kwargs)
 
     def _precheck(self):
-        # # Custom TLS mismatch handling for better diagnostics
+        # Custom TLS mismatch handling for better diagnostics
         if self.main_process and (
             # one of cert/key missing
             bool(self.args.cert) != bool(self.args.key)
@@ -114,57 +170,11 @@ Or, a path to a directory to run as a simple HTTP server:
             error_logger.error(message)
             sys.exit(1)
 
-    def _get_app(self):
+    def _get_app(self, app_loader: AppLoader):
         try:
-            module_path = os.path.abspath(os.getcwd())
+            app = app_loader.load()
-            if module_path not in sys.path:
-                sys.path.append(module_path)
-
-            if self.args.simple:
-                path = Path(self.args.module)
-                app = create_simple_server(path)
-            else:
-                delimiter = ":" if ":" in self.args.module else "."
-                module_name, app_name = self.args.module.rsplit(delimiter, 1)
-
-                if module_name == "" and os.path.isdir(self.args.module):
-                    raise ValueError(
-                        "App not found.\n"
-                        "   Please use --simple if you are passing a "
-                        "directory to sanic.\n"
-                        f"   eg. sanic {self.args.module} --simple"
-                    )
-
-                if app_name.endswith("()"):
-                    self.args.factory = True
-                    app_name = app_name[:-2]
-
-                module = import_module(module_name)
-                app = getattr(module, app_name, None)
-                if self.args.factory:
-                    try:
-                        app = app(self.args)
-                    except TypeError:
-                        app = app()
-
-                app_type_name = type(app).__name__
-
-                if not isinstance(app, Sanic):
-                    if callable(app):
-                        solution = f"sanic {self.args.module} --factory"
-                        raise ValueError(
-                            "Module is not a Sanic app, it is a "
-                            f"{app_type_name}\n"
-                            "  If this callable returns a "
-                            f"Sanic instance try: \n{solution}"
-                        )
-
-                    raise ValueError(
-                        f"Module is not a Sanic app, it is a {app_type_name}\n"
-                        f"  Perhaps you meant {self.args.module}:app?"
-                    )
         except ImportError as e:
-            if module_name.startswith(e.name):
+            if app_loader.module_name.startswith(e.name):  # type: ignore
                 error_logger.error(
                     f"No module named {e.name} found.\n"
                     "  Example File: project/sanic_server.py -> app\n"
@@ -190,8 +200,10 @@ Or, a path to a directory to run as a simple HTTP server:
         elif len(ssl) == 1 and ssl[0] is not None:
             # Use only one cert, no TLSSelector.
             ssl = ssl[0]
+
         kwargs = {
             "access_log": self.args.access_log,
+            "coffee": self.args.coffee,
             "debug": self.args.debug,
             "fast": self.args.fast,
             "host": self.args.host,
@@ -203,6 +215,7 @@ Or, a path to a directory to run as a simple HTTP server:
             "verbosity": self.args.verbosity or 0,
             "workers": self.args.workers,
             "auto_tls": self.args.auto_tls,
+            "single_process": self.args.single,
         }
 
         for maybe_arg in ("auto_reload", "dev"):

sanic/cli/arguments.py

@@ -30,7 +30,7 @@ class Group:
         instance = cls(parser, cls.name)
         return instance
 
-    def add_bool_arguments(self, *args, **kwargs):
+    def add_bool_arguments(self, *args, nullable=False, **kwargs):
         group = self.container.add_mutually_exclusive_group()
         kwargs["help"] = kwargs["help"].capitalize()
         group.add_argument(*args, action="store_true", **kwargs)
@@ -38,6 +38,9 @@ class Group:
         group.add_argument(
             "--no-" + args[0][2:], *args[1:], action="store_false", **kwargs
         )
+        if nullable:
+            params = {args[0][2:].replace("-", "_"): None}
+            group.set_defaults(**params)
 
     def prepare(self, args) -> None:
         ...
@@ -54,11 +57,15 @@ class GeneralGroup(Group):
         )
 
         self.container.add_argument(
-            "module",
+            "target",
             help=(
-                "Path to your Sanic app. Example: path.to.server:app\n"
+                "Path to your Sanic app instance.\n"
-                "If running a Simple Server, path to directory to serve. "
+                "\tExample: path.to.server:app\n"
-                "Example: ./\n"
+                "If running a Simple Server, path to directory to serve.\n"
+                "\tExample: ./\n"
+                "Additionally, this can be a path to a factory function\n"
+                "that returns a Sanic app instance.\n"
+                "\tExample: path.to.server:create_app\n"
             ),
         )
 
@@ -67,7 +74,8 @@ class ApplicationGroup(Group):
     name = "Application"
 
     def attach(self):
-        self.container.add_argument(
+        group = self.container.add_mutually_exclusive_group()
+        group.add_argument(
             "--factory",
             action="store_true",
             help=(
@@ -75,7 +83,7 @@ class ApplicationGroup(Group):
                 "i.e. a () -> <Sanic app> callable"
             ),
         )
-        self.container.add_argument(
+        group.add_argument(
             "-s",
             "--simple",
             dest="simple",
@@ -207,8 +215,17 @@ class WorkerGroup(Group):
             action="store_true",
             help="Set the number of workers to max allowed",
         )
+        group.add_argument(
+            "--single-process",
+            dest="single",
+            action="store_true",
+            help="Do not use multiprocessing, run server in a single process",
+        )
         self.add_bool_arguments(
-            "--access-logs", dest="access_log", help="display access logs"
+            "--access-logs",
+            dest="access_log",
+            help="display access logs",
+            default=None,
         )
 
 
@@ -262,6 +279,12 @@ class OutputGroup(Group):
     name = "Output"
 
     def attach(self):
+        self.add_bool_arguments(
+            "--coffee",
+            dest="coffee",
+            default=False,
+            help="Uhm, coffee?",
+        )
         self.add_bool_arguments(
             "--motd",
             dest="motd",

sanic/cli/base.py

@@ -0,0 +1,35 @@
+from argparse import (
+    SUPPRESS,
+    Action,
+    ArgumentParser,
+    RawTextHelpFormatter,
+    _SubParsersAction,
+)
+from typing import Any
+
+
+class SanicArgumentParser(ArgumentParser):
+    def _check_value(self, action: Action, value: Any) -> None:
+        if isinstance(action, SanicSubParsersAction):
+            return
+        super()._check_value(action, value)
+
+
+class SanicHelpFormatter(RawTextHelpFormatter):
+    def add_usage(self, usage, actions, groups, prefix=None):
+        if not usage:
+            usage = SUPPRESS
+            # Add one linebreak, but not two
+            self.add_text("\x1b[1A")
+        super().add_usage(usage, actions, groups, prefix)
+
+
+class SanicSubParsersAction(_SubParsersAction):
+    def __call__(self, parser, namespace, values, option_string=None):
+        self._name_parser_map
+        parser_name = values[0]
+        if parser_name not in self._name_parser_map:
+            self._name_parser_map[parser_name] = parser
+            values = ["<custom>", *values]
+
+        super().__call__(parser, namespace, values, option_string)

sanic/cli/inspector.py

@@ -0,0 +1,105 @@
+from argparse import ArgumentParser
+
+from sanic.application.logo import get_logo
+from sanic.cli.base import SanicHelpFormatter, SanicSubParsersAction
+
+
+def _add_shared(parser: ArgumentParser) -> None:
+    parser.add_argument(
+        "--host",
+        "-H",
+        default="localhost",
+        help="Inspector host address [default 127.0.0.1]",
+    )
+    parser.add_argument(
+        "--port",
+        "-p",
+        default=6457,
+        type=int,
+        help="Inspector port [default 6457]",
+    )
+    parser.add_argument(
+        "--secure",
+        "-s",
+        action="store_true",
+        help="Whether to access the Inspector via TLS encryption",
+    )
+    parser.add_argument("--api-key", "-k", help="Inspector authentication key")
+    parser.add_argument(
+        "--raw",
+        action="store_true",
+        help="Whether to output the raw response information",
+    )
+
+
+class InspectorSubParser(ArgumentParser):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        _add_shared(self)
+        if not self.description:
+            self.description = ""
+        self.description = get_logo(True) + self.description
+
+
+def make_inspector_parser(parser: ArgumentParser) -> None:
+    _add_shared(parser)
+    subparsers = parser.add_subparsers(
+        action=SanicSubParsersAction,
+        dest="action",
+        description=(
+            "Run one or none of the below subcommands. Using inspect without "
+            "a subcommand will fetch general information about the state "
+            "of the application instance.\n\n"
+            "Or, you can optionally follow inspect with a subcommand. "
+            "If you have created a custom "
+            "Inspector instance, then you can run custom commands. See "
+            "https://sanic.dev/en/guide/deployment/inspector.html "
+            "for more details."
+        ),
+        title="  Subcommands",
+        parser_class=InspectorSubParser,
+    )
+    reloader = subparsers.add_parser(
+        "reload",
+        help="Trigger a reload of the server workers",
+        formatter_class=SanicHelpFormatter,
+    )
+    reloader.add_argument(
+        "--zero-downtime",
+        action="store_true",
+        help=(
+            "Whether to wait for the new process to be online before "
+            "terminating the old"
+        ),
+    )
+    subparsers.add_parser(
+        "shutdown",
+        help="Shutdown the application and all processes",
+        formatter_class=SanicHelpFormatter,
+    )
+    scale = subparsers.add_parser(
+        "scale",
+        help="Scale the number of workers",
+        formatter_class=SanicHelpFormatter,
+    )
+    scale.add_argument(
+        "replicas",
+        type=int,
+        help="Number of workers requested",
+    )
+
+    custom = subparsers.add_parser(
+        "<custom>",
+        help="Run a custom command",
+        description=(
+            "keyword arguments:\n  When running a custom command, you can "
+            "add keyword arguments by appending them to your command\n\n"
+            "\tsanic inspect foo --one=1 --two=2"
+        ),
+        formatter_class=SanicHelpFormatter,
+    )
+    custom.add_argument(
+        "positional",
+        nargs="*",
+        help="Add one or more non-keyword args to your custom command",
+    )

sanic/cli/inspector_client.py

@@ -0,0 +1,119 @@
+from __future__ import annotations
+
+import sys
+
+from http.client import RemoteDisconnected
+from textwrap import indent
+from typing import Any, Dict, Optional
+from urllib.error import URLError
+from urllib.request import Request as URequest
+from urllib.request import urlopen
+
+from sanic.application.logo import get_logo
+from sanic.application.motd import MOTDTTY
+from sanic.log import Colors
+
+
+try:  # no cov
+    from ujson import dumps, loads
+except ModuleNotFoundError:  # no cov
+    from json import dumps, loads  # type: ignore
+
+
+class InspectorClient:
+    def __init__(
+        self,
+        host: str,
+        port: int,
+        secure: bool,
+        raw: bool,
+        api_key: Optional[str],
+    ) -> None:
+        self.scheme = "https" if secure else "http"
+        self.host = host
+        self.port = port
+        self.raw = raw
+        self.api_key = api_key
+
+        for scheme in ("http", "https"):
+            full = f"{scheme}://"
+            if self.host.startswith(full):
+                self.scheme = scheme
+                self.host = self.host[len(full) :]  # noqa E203
+
+    def do(self, action: str, **kwargs: Any) -> None:
+        if action == "info":
+            self.info()
+            return
+        result = self.request(action, **kwargs).get("result")
+        if result:
+            out = (
+                dumps(result)
+                if isinstance(result, (list, dict))
+                else str(result)
+            )
+            sys.stdout.write(out + "\n")
+
+    def info(self) -> None:
+        out = sys.stdout.write
+        response = self.request("", "GET")
+        if self.raw or not response:
+            return
+        data = response["result"]
+        display = data.pop("info")
+        extra = display.pop("extra", {})
+        display["packages"] = ", ".join(display["packages"])
+        MOTDTTY(get_logo(), self.base_url, display, extra).display(
+            version=False,
+            action="Inspecting",
+            out=out,
+        )
+        for name, info in data["workers"].items():
+            info = "\n".join(
+                f"\t{key}: {Colors.BLUE}{value}{Colors.END}"
+                for key, value in info.items()
+            )
+            out(
+                "\n"
+                + indent(
+                    "\n".join(
+                        [
+                            f"{Colors.BOLD}{Colors.SANIC}{name}{Colors.END}",
+                            info,
+                        ]
+                    ),
+                    "  ",
+                )
+                + "\n"
+            )
+
+    def request(self, action: str, method: str = "POST", **kwargs: Any) -> Any:
+        url = f"{self.base_url}/{action}"
+        params: Dict[str, Any] = {"method": method, "headers": {}}
+        if kwargs:
+            params["data"] = dumps(kwargs).encode()
+            params["headers"]["content-type"] = "application/json"
+        if self.api_key:
+            params["headers"]["authorization"] = f"Bearer {self.api_key}"
+        request = URequest(url, **params)
+
+        try:
+            with urlopen(request) as response:  # nosec B310
+                raw = response.read()
+                loaded = loads(raw)
+                if self.raw:
+                    sys.stdout.write(dumps(loaded.get("result")) + "\n")
+                    return {}
+                return loaded
+        except (URLError, RemoteDisconnected) as e:
+            sys.stderr.write(
+                f"{Colors.RED}Could not connect to inspector at: "
+                f"{Colors.YELLOW}{self.base_url}{Colors.END}\n"
+                "Either the application is not running, or it did not start "
+                f"an inspector instance.\n{e}\n"
+            )
+            sys.exit(1)
+
+    @property
+    def base_url(self):
+        return f"{self.scheme}://{self.host}:{self.port}"

sanic/compat.py

@@ -3,10 +3,23 @@ import os
 import signal
 import sys
 
-from typing import Awaitable
+from contextlib import contextmanager
+from enum import Enum
+from typing import Awaitable, Union
 
 from multidict import CIMultiDict  # type: ignore
 
+from sanic.helpers import Default
+
+
+if sys.version_info < (3, 8):  # no cov
+    StartMethod = Union[Default, str]
+else:  # no cov
+    from typing import Literal
+
+    StartMethod = Union[
+        Default, Literal["fork"], Literal["forkserver"], Literal["spawn"]
+    ]
 
 OS_IS_WINDOWS = os.name == "nt"
 UVLOOP_INSTALLED = False
@@ -18,6 +31,40 @@ try:
 except ImportError:
     pass
 
+# Python 3.11 changed the way Enum formatting works for mixed-in types.
+if sys.version_info < (3, 11, 0):
+
+    class StrEnum(str, Enum):
+        pass
+
+else:
+    from enum import StrEnum  # type: ignore # noqa
+
+
+class UpperStrEnum(StrEnum):
+    def _generate_next_value_(name, start, count, last_values):
+        return name.upper()
+
+    def __eq__(self, value: object) -> bool:
+        value = str(value).upper()
+        return super().__eq__(value)
+
+    def __hash__(self) -> int:
+        return hash(self.value)
+
+    def __str__(self) -> str:
+        return self.value
+
+
+@contextmanager
+def use_context(method: StartMethod):
+    from sanic import Sanic
+
+    orig = Sanic.start_method
+    Sanic.start_method = method
+    yield
+    Sanic.start_method = orig
+
 
 def enable_windows_color_support():
     import ctypes
@@ -41,6 +88,12 @@ class Header(CIMultiDict):
     very similar to a regular dictionary.
     """
 
+    def __getattr__(self, key: str) -> str:
+        if key.startswith("_"):
+            return self.__getattribute__(key)
+        key = key.rstrip("_").replace("_", "-")
+        return ",".join(self.getall(key, default=[]))
+
     def get_all(self, key: str):
         """
         Convenience method mapped to ``getall()``.

sanic/config.py

@@ -1,30 +1,55 @@
 from __future__ import annotations
 
+import sys
+
+from abc import ABCMeta
 from inspect import getmembers, isclass, isdatadescriptor
 from os import environ
 from pathlib import Path
 from typing import Any, Callable, Dict, Optional, Sequence, Union
+from warnings import filterwarnings
 
 from sanic.constants import LocalCertCreator
 from sanic.errorpages import DEFAULT_FORMAT, check_error_format
 from sanic.helpers import Default, _default
 from sanic.http import Http
-from sanic.log import deprecation, error_logger
+from sanic.log import error_logger
 from sanic.utils import load_module_from_file_location, str_to_bool
 
 
+if sys.version_info >= (3, 8):
+    from typing import Literal
+
+    FilterWarningType = Union[
+        Literal["default"],
+        Literal["error"],
+        Literal["ignore"],
+        Literal["always"],
+        Literal["module"],
+        Literal["once"],
+    ]
+else:
+    FilterWarningType = str
+
 SANIC_PREFIX = "SANIC_"
 
 
 DEFAULT_CONFIG = {
     "_FALLBACK_ERROR_FORMAT": _default,
-    "ACCESS_LOG": True,
+    "ACCESS_LOG": False,
     "AUTO_EXTEND": True,
     "AUTO_RELOAD": False,
     "EVENT_AUTOREGISTER": False,
+    "DEPRECATION_FILTER": "once",
     "FORWARDED_FOR_HEADER": "X-Forwarded-For",
     "FORWARDED_SECRET": None,
     "GRACEFUL_SHUTDOWN_TIMEOUT": 15.0,  # 15 sec
+    "INSPECTOR": False,
+    "INSPECTOR_HOST": "localhost",
+    "INSPECTOR_PORT": 6457,
+    "INSPECTOR_TLS_KEY": _default,
+    "INSPECTOR_TLS_CERT": _default,
+    "INSPECTOR_API_KEY": "",
     "KEEP_ALIVE_TIMEOUT": 5,  # 5 seconds
     "KEEP_ALIVE": True,
     "LOCAL_CERT_CREATOR": LocalCertCreator.AUTO,
@@ -50,12 +75,8 @@ DEFAULT_CONFIG = {
     "WEBSOCKET_PING_TIMEOUT": 20,
 }
 
-# These values will be removed from the Config object in v22.6 and moved
-# to the application state
-DEPRECATED_CONFIG = ("SERVER_RUNNING", "RELOADER_PROCESS", "RELOADED_FILES")
 
-
+class DescriptorMeta(ABCMeta):
-class DescriptorMeta(type):
     def __init__(cls, *_):
         cls.__setters__ = {name for name, _ in getmembers(cls, cls._is_setter)}
 
@@ -69,9 +90,16 @@ class Config(dict, metaclass=DescriptorMeta):
     AUTO_EXTEND: bool
     AUTO_RELOAD: bool
     EVENT_AUTOREGISTER: bool
+    DEPRECATION_FILTER: FilterWarningType
     FORWARDED_FOR_HEADER: str
     FORWARDED_SECRET: Optional[str]
     GRACEFUL_SHUTDOWN_TIMEOUT: float
+    INSPECTOR: bool
+    INSPECTOR_HOST: str
+    INSPECTOR_PORT: int
+    INSPECTOR_TLS_KEY: Union[Path, str, Default]
+    INSPECTOR_TLS_CERT: Union[Path, str, Default]
+    INSPECTOR_API_KEY: str
     KEEP_ALIVE_TIMEOUT: int
     KEEP_ALIVE: bool
     LOCAL_CERT_CREATOR: Union[str, LocalCertCreator]
@@ -99,7 +127,9 @@ class Config(dict, metaclass=DescriptorMeta):
 
     def __init__(
         self,
-        defaults: Dict[str, Union[str, bool, int, float, None]] = None,
+        defaults: Optional[
+            Dict[str, Union[str, bool, int, float, None]]
+        ] = None,
         env_prefix: Optional[str] = SANIC_PREFIX,
         keep_alive: Optional[bool] = None,
         *,
@@ -107,6 +137,7 @@ class Config(dict, metaclass=DescriptorMeta):
     ):
         defaults = defaults or {}
         super().__init__({**DEFAULT_CONFIG, **defaults})
+        self._configure_warnings()
 
         self._converters = [str, str_to_bool, float, int]
 
@@ -127,19 +158,19 @@ class Config(dict, metaclass=DescriptorMeta):
         self._check_error_format()
         self._init = True
 
-    def __getattr__(self, attr):
+    def __getattr__(self, attr: Any):
         try:
             return self[attr]
         except KeyError as ke:
             raise AttributeError(f"Config has no '{ke.args[0]}'")
 
-    def __setattr__(self, attr, value) -> None:
+    def __setattr__(self, attr: str, value: Any) -> None:
         self.update({attr: value})
 
-    def __setitem__(self, attr, value) -> None:
+    def __setitem__(self, attr: str, value: Any) -> None:
         self.update({attr: value})
 
-    def update(self, *other, **kwargs) -> None:
+    def update(self, *other: Any, **kwargs: Any) -> None:
         kwargs.update({k: v for item in other for k, v in dict(item).items()})
         setters: Dict[str, Any] = {
             k: kwargs.pop(k)
@@ -172,10 +203,12 @@ class Config(dict, metaclass=DescriptorMeta):
             self.LOCAL_CERT_CREATOR = LocalCertCreator[
                 self.LOCAL_CERT_CREATOR.upper()
             ]
+        elif attr == "DEPRECATION_FILTER":
+            self._configure_warnings()
 
     @property
     def FALLBACK_ERROR_FORMAT(self) -> str:
-        if self._FALLBACK_ERROR_FORMAT is _default:
+        if isinstance(self._FALLBACK_ERROR_FORMAT, Default):
             return DEFAULT_FORMAT
         return self._FALLBACK_ERROR_FORMAT
 
@@ -183,7 +216,7 @@ class Config(dict, metaclass=DescriptorMeta):
     def FALLBACK_ERROR_FORMAT(self, value):
         self._check_error_format(value)
         if (
-            self._FALLBACK_ERROR_FORMAT is not _default
+            not isinstance(self._FALLBACK_ERROR_FORMAT, Default)
             and value != self._FALLBACK_ERROR_FORMAT
         ):
             error_logger.warning(
@@ -199,6 +232,13 @@ class Config(dict, metaclass=DescriptorMeta):
             self.REQUEST_MAX_SIZE,
         )
 
+    def _configure_warnings(self):
+        filterwarnings(
+            self.DEPRECATION_FILTER,
+            category=DeprecationWarning,
+            module=r"sanic.*",
+        )
+
     def _check_error_format(self, format: Optional[str] = None):
         check_error_format(format or self.FALLBACK_ERROR_FORMAT)
 
@@ -206,7 +246,9 @@ class Config(dict, metaclass=DescriptorMeta):
         """
         Looks for prefixed environment variables and applies them to the
         configuration if present. This is called automatically when Sanic
-        starts up to load environment variables into config.
+        starts up to load environment variables into config. Environment
+        variables should start with the defined prefix and should only
+        contain uppercase letters.
 
         It will automatically hydrate the following types:
 
@@ -232,12 +274,9 @@ class Config(dict, metaclass=DescriptorMeta):
         `See user guide re: config
         <https://sanicframework.org/guide/deployment/configuration.html>`__
         """
-        lower_case_var_found = False
         for key, value in environ.items():
-            if not key.startswith(prefix):
+            if not key.startswith(prefix) or not key.isupper():
                 continue
-            if not key.isupper():
-                lower_case_var_found = True
 
             _, config_key = key.split(prefix, 1)
 
@@ -247,12 +286,6 @@ class Config(dict, metaclass=DescriptorMeta):
                     break
                 except ValueError:
                     pass
-        if lower_case_var_found:
-            deprecation(
-                "Lowercase environment variables will not be "
-                "loaded into Sanic config beginning in v22.9.",
-                22.9,
-            )
 
     def update_config(self, config: Union[bytes, str, dict, Any]):
         """

sanic/constants.py

@@ -1,20 +1,9 @@
-from enum import Enum, auto
+from enum import auto
+
+from sanic.compat import UpperStrEnum
 
 
-class HTTPMethod(str, Enum):
+class HTTPMethod(UpperStrEnum):
-    def _generate_next_value_(name, start, count, last_values):
-        return name.upper()
-
-    def __eq__(self, value: object) -> bool:
-        value = str(value).upper()
-        return super().__eq__(value)
-
-    def __hash__(self) -> int:
-        return hash(self.value)
-
-    def __str__(self) -> str:
-        return self.value
-
     GET = auto()
     POST = auto()
     PUT = auto()
@@ -24,16 +13,22 @@ class HTTPMethod(str, Enum):
     DELETE = auto()
 
 
-class LocalCertCreator(str, Enum):
+class LocalCertCreator(UpperStrEnum):
-    def _generate_next_value_(name, start, count, last_values):
-        return name.upper()
-
     AUTO = auto()
     TRUSTME = auto()
     MKCERT = auto()
 
 
 HTTP_METHODS = tuple(HTTPMethod.__members__.values())
+SAFE_HTTP_METHODS = (HTTPMethod.GET, HTTPMethod.HEAD, HTTPMethod.OPTIONS)
+IDEMPOTENT_HTTP_METHODS = (
+    HTTPMethod.GET,
+    HTTPMethod.HEAD,
+    HTTPMethod.PUT,
+    HTTPMethod.DELETE,
+    HTTPMethod.OPTIONS,
+)
+CACHEABLE_HTTP_METHODS = (HTTPMethod.GET, HTTPMethod.HEAD)
 DEFAULT_HTTP_CONTENT_TYPE = "application/octet-stream"
 DEFAULT_LOCAL_TLS_KEY = "key.pem"
 DEFAULT_LOCAL_TLS_CERT = "cert.pem"

sanic/cookies.py

@@ -1,156 +0,0 @@
-import re
-import string
-
-from datetime import datetime
-from typing import Dict
-
-
-DEFAULT_MAX_AGE = 0
-
-# ------------------------------------------------------------ #
-#  SimpleCookie
-# ------------------------------------------------------------ #
-
-# Straight up copied this section of dark magic from SimpleCookie
-
-_LegalChars = string.ascii_letters + string.digits + "!#$%&'*+-.^_`|~:"
-_UnescapedChars = _LegalChars + " ()/<=>?@[]{}"
-
-_Translator = {
-    n: "\\%03o" % n for n in set(range(256)) - set(map(ord, _UnescapedChars))
-}
-_Translator.update({ord('"'): '\\"', ord("\\"): "\\\\"})
-
-
-def _quote(str):
-    r"""Quote a string for use in a cookie header.
-    If the string does not need to be double-quoted, then just return the
-    string.  Otherwise, surround the string in doublequotes and quote
-    (with a \) special characters.
-    """
-    if str is None or _is_legal_key(str):
-        return str
-    else:
-        return '"' + str.translate(_Translator) + '"'
-
-
-_is_legal_key = re.compile("[%s]+" % re.escape(_LegalChars)).fullmatch
-
-# ------------------------------------------------------------ #
-#  Custom SimpleCookie
-# ------------------------------------------------------------ #
-
-
-class CookieJar(dict):
-    """
-    CookieJar dynamically writes headers as cookies are added and removed
-    It gets around the limitation of one header per name by using the
-    MultiHeader class to provide a unique key that encodes to Set-Cookie.
-    """
-
-    def __init__(self, headers):
-        super().__init__()
-        self.headers: Dict[str, str] = headers
-        self.cookie_headers: Dict[str, str] = {}
-        self.header_key: str = "Set-Cookie"
-
-    def __setitem__(self, key, value):
-        # If this cookie doesn't exist, add it to the header keys
-        if not self.cookie_headers.get(key):
-            cookie = Cookie(key, value)
-            cookie["path"] = "/"
-            self.cookie_headers[key] = self.header_key
-            self.headers.add(self.header_key, cookie)
-            return super().__setitem__(key, cookie)
-        else:
-            self[key].value = value
-
-    def __delitem__(self, key):
-        if key not in self.cookie_headers:
-            self[key] = ""
-            self[key]["max-age"] = 0
-        else:
-            cookie_header = self.cookie_headers[key]
-            # remove it from header
-            cookies = self.headers.popall(cookie_header)
-            for cookie in cookies:
-                if cookie.key != key:
-                    self.headers.add(cookie_header, cookie)
-            del self.cookie_headers[key]
-            return super().__delitem__(key)
-
-
-class Cookie(dict):
-    """A stripped down version of Morsel from SimpleCookie #gottagofast"""
-
-    _keys = {
-        "expires": "expires",
-        "path": "Path",
-        "comment": "Comment",
-        "domain": "Domain",
-        "max-age": "Max-Age",
-        "secure": "Secure",
-        "httponly": "HttpOnly",
-        "version": "Version",
-        "samesite": "SameSite",
-    }
-    _flags = {"secure", "httponly"}
-
-    def __init__(self, key, value):
-        if key in self._keys:
-            raise KeyError("Cookie name is a reserved word")
-        if not _is_legal_key(key):
-            raise KeyError("Cookie key contains illegal characters")
-        self.key = key
-        self.value = value
-        super().__init__()
-
-    def __setitem__(self, key, value):
-        if key not in self._keys:
-            raise KeyError("Unknown cookie property")
-        if value is not False:
-            if key.lower() == "max-age":
-                if not str(value).isdigit():
-                    raise ValueError("Cookie max-age must be an integer")
-            elif key.lower() == "expires":
-                if not isinstance(value, datetime):
-                    raise TypeError(
-                        "Cookie 'expires' property must be a datetime"
-                    )
-            return super().__setitem__(key, value)
-
-    def encode(self, encoding):
-        """
-        Encode the cookie content in a specific type of encoding instructed
-        by the developer. Leverages the :func:`str.encode` method provided
-        by python.
-
-        This method can be used to encode and embed ``utf-8`` content into
-        the cookies.
-
-        :param encoding: Encoding to be used with the cookie
-        :return: Cookie encoded in a codec of choosing.
-        :except: UnicodeEncodeError
-        """
-        return str(self).encode(encoding)
-
-    def __str__(self):
-        """Format as a Set-Cookie header value."""
-        output = ["%s=%s" % (self.key, _quote(self.value))]
-        for key, value in self.items():
-            if key == "max-age":
-                try:
-                    output.append("%s=%d" % (self._keys[key], value))
-                except TypeError:
-                    output.append("%s=%s" % (self._keys[key], value))
-            elif key == "expires":
-                output.append(
-                    "%s=%s"
-                    % (self._keys[key], value.strftime("%a, %d-%b-%Y %T GMT"))
-                )
-            elif key in self._flags and self[key]:
-                output.append(self._keys[key])
-            else:
-                output.append("%s=%s" % (self._keys[key], value))
-
-        return "; ".join(output)

sanic/cookies/__init__.py

@@ -0,0 +1,4 @@
+from .response import Cookie, CookieJar
+
+
+__all__ = ("Cookie", "CookieJar")

sanic/cookies/request.py

@@ -0,0 +1,119 @@
+import re
+
+from typing import Any, Dict, List, Optional
+
+from sanic.cookies.response import Cookie
+from sanic.log import deprecation
+from sanic.request.parameters import RequestParameters
+
+
+COOKIE_NAME_RESERVED_CHARS = re.compile(
+    '[\x00-\x1F\x7F-\xFF()<>@,;:\\\\"/[\\]?={} \x09]'
+)
+OCTAL_PATTERN = re.compile(r"\\[0-3][0-7][0-7]")
+QUOTE_PATTERN = re.compile(r"[\\].")
+
+
+def _unquote(str):  # no cov
+    if str is None or len(str) < 2:
+        return str
+    if str[0] != '"' or str[-1] != '"':
+        return str
+
+    str = str[1:-1]
+
+    i = 0
+    n = len(str)
+    res = []
+    while 0 <= i < n:
+        o_match = OCTAL_PATTERN.search(str, i)
+        q_match = QUOTE_PATTERN.search(str, i)
+        if not o_match and not q_match:
+            res.append(str[i:])
+            break
+        # else:
+        j = k = -1
+        if o_match:
+            j = o_match.start(0)
+        if q_match:
+            k = q_match.start(0)
+        if q_match and (not o_match or k < j):
+            res.append(str[i:k])
+            res.append(str[k + 1])
+            i = k + 2
+        else:
+            res.append(str[i:j])
+            res.append(chr(int(str[j + 1 : j + 4], 8)))  # noqa: E203
+            i = j + 4
+    return "".join(res)
+
+
+def parse_cookie(raw: str):
+    cookies: Dict[str, List] = {}
+
+    for token in raw.split(";"):
+        name, __, value = token.partition("=")
+        name = name.strip()
+        value = value.strip()
+
+        if not name:
+            continue
+
+        if COOKIE_NAME_RESERVED_CHARS.search(name):  # no cov
+            continue
+
+        if len(value) > 2 and value[0] == '"' and value[-1] == '"':  # no cov
+            value = _unquote(value)
+
+        if name in cookies:
+            cookies[name].append(value)
+        else:
+            cookies[name] = [value]
+
+    return cookies
+
+
+class CookieRequestParameters(RequestParameters):
+    def __getitem__(self, key: str) -> Optional[str]:
+        deprecation(
+            f"You are accessing cookie key '{key}', which is currently in "
+            "compat mode returning a single cookie value. Starting in v24.3 "
+            "accessing a cookie value like this will return a list of values. "
+            "To avoid this behavior and continue accessing a single value, "
+            f"please upgrade from request.cookies['{key}'] to "
+            f"request.cookies.get('{key}'). See more details: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#request-cookies",  # noqa
+            24.3,
+        )
+        try:
+            value = self._get_prefixed_cookie(key)
+        except KeyError:
+            value = super().__getitem__(key)
+        return value[0]
+
+    def __getattr__(self, key: str) -> str:
+        if key.startswith("_"):
+            return self.__getattribute__(key)
+        key = key.rstrip("_").replace("_", "-")
+        return str(self.get(key, ""))
+
+    def get(self, name: str, default: Optional[Any] = None) -> Optional[Any]:
+        try:
+            return self._get_prefixed_cookie(name)[0]
+        except KeyError:
+            return super().get(name, default)
+
+    def getlist(
+        self, name: str, default: Optional[Any] = None
+    ) -> Optional[Any]:
+        try:
+            return self._get_prefixed_cookie(name)
+        except KeyError:
+            return super().getlist(name, default)
+
+    def _get_prefixed_cookie(self, name: str) -> Any:
+        getitem = super().__getitem__
+        try:
+            return getitem(f"{Cookie.HOST_PREFIX}{name}")
+        except KeyError:
+            return getitem(f"{Cookie.SECURE_PREFIX}{name}")

sanic/cookies/response.py

@@ -0,0 +1,617 @@
+from __future__ import annotations
+
+import re
+import string
+import sys
+
+from datetime import datetime
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union
+
+from sanic.exceptions import ServerError
+from sanic.log import deprecation
+
+
+if TYPE_CHECKING:
+    from sanic.compat import Header
+
+if sys.version_info < (3, 8):  # no cov
+    SameSite = str
+else:  # no cov
+    from typing import Literal
+
+    SameSite = Union[
+        Literal["Strict"],
+        Literal["Lax"],
+        Literal["None"],
+        Literal["strict"],
+        Literal["lax"],
+        Literal["none"],
+    ]
+
+DEFAULT_MAX_AGE = 0
+SAMESITE_VALUES = ("strict", "lax", "none")
+
+LEGAL_CHARS = string.ascii_letters + string.digits + "!#$%&'*+-.^_`|~:"
+UNESCAPED_CHARS = LEGAL_CHARS + " ()/<=>?@[]{}"
+TRANSLATOR = {ch: f"\\{ch:03o}" for ch in bytes(range(32)) + b'";\\\x7F'}
+
+
+def _quote(str):  # no cov
+    r"""Quote a string for use in a cookie header.
+    If the string does not need to be double-quoted, then just return the
+    string.  Otherwise, surround the string in doublequotes and quote
+    (with a \) special characters.
+    """
+    if str is None or _is_legal_key(str):
+        return str
+    else:
+        return f'"{str.translate(TRANSLATOR)}"'
+
+
+_is_legal_key = re.compile("[%s]+" % re.escape(LEGAL_CHARS)).fullmatch
+
+
+# In v24.3, we should remove this as being a subclass of dict
+class CookieJar(dict):
+    """
+    CookieJar dynamically writes headers as cookies are added and removed
+    It gets around the limitation of one header per name by using the
+    MultiHeader class to provide a unique key that encodes to Set-Cookie.
+    """
+
+    HEADER_KEY = "Set-Cookie"
+
+    def __init__(self, headers: Header):
+        super().__init__()
+        self.headers = headers
+
+    def __setitem__(self, key, value):
+        # If this cookie doesn't exist, add it to the header keys
+        deprecation(
+            "Setting cookie values using the dict pattern has been "
+            "deprecated. You should instead use the cookies.add_cookie "
+            "method. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            0,
+        )
+        if key not in self:
+            self.add_cookie(key, value, secure=False, samesite=None)
+        else:
+            self[key].value = value
+
+    def __delitem__(self, key):
+        deprecation(
+            "Deleting cookie values using the dict pattern has been "
+            "deprecated. You should instead use the cookies.delete_cookie "
+            "method. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            0,
+        )
+        if key in self:
+            super().__delitem__(key)
+        self.delete_cookie(key)
+
+    def __len__(self):  # no cov
+        return len(self.cookies)
+
+    def __getitem__(self, key: str) -> Cookie:
+        deprecation(
+            "Accessing cookies from the CookieJar by dict key is deprecated. "
+            "You should instead use the cookies.get_cookie method. "
+            "To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            0,
+        )
+        return super().__getitem__(key)
+
+    def __iter__(self):  # no cov
+        deprecation(
+            "Iterating over the CookieJar has been deprecated and will be "
+            "removed in v24.3. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            24.3,
+        )
+        return super().__iter__()
+
+    def keys(self):  # no cov
+        deprecation(
+            "Accessing CookieJar.keys() has been deprecated and will be "
+            "removed in v24.3. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            24.3,
+        )
+        return super().keys()
+
+    def values(self):  # no cov
+        deprecation(
+            "Accessing CookieJar.values() has been deprecated and will be "
+            "removed in v24.3. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            24.3,
+        )
+        return super().values()
+
+    def items(self):  # no cov
+        deprecation(
+            "Accessing CookieJar.items() has been deprecated and will be "
+            "removed in v24.3. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            24.3,
+        )
+        return super().items()
+
+    def get(self, *args, **kwargs):  # no cov
+        deprecation(
+            "Accessing cookies from the CookieJar using get is deprecated "
+            "and will be removed in v24.3. You should instead use the "
+            "cookies.get_cookie method. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            24.3,
+        )
+        return super().get(*args, **kwargs)
+
+    def pop(self, key, *args, **kwargs):  # no cov
+        deprecation(
+            "Using CookieJar.pop() has been deprecated and will be "
+            "removed in v24.3. To learn more, please see: "
+            "https://sanic.dev/en/guide/release-notes/v23.3.html#response-cookies",  # noqa
+            24.3,
+        )
+        self.delete(key)
+        return super().pop(key, *args, **kwargs)
+
+    @property
+    def header_key(self):  # no cov
+        deprecation(
+            "The CookieJar.header_key property has been deprecated and will "
+            "be removed in version 24.3. Use CookieJar.HEADER_KEY. ",
+            24.3,
+        )
+        return CookieJar.HEADER_KEY
+
+    @property
+    def cookie_headers(self) -> Dict[str, str]:  # no cov
+        deprecation(
+            "The CookieJar.coookie_headers property has been deprecated "
+            "and will be removed in version 24.3. If you need to check if a "
+            "particular cookie key has been set, use CookieJar.has_cookie.",
+            24.3,
+        )
+        return {key: self.header_key for key in self}
+
+    @property
+    def cookies(self) -> List[Cookie]:
+        return self.headers.getall(self.HEADER_KEY)
+
+    def get_cookie(
+        self,
+        key: str,
+        path: str = "/",
+        domain: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ) -> Optional[Cookie]:
+        for cookie in self.cookies:
+            if (
+                cookie.key == Cookie.make_key(key, host_prefix, secure_prefix)
+                and cookie.path == path
+                and cookie.domain == domain
+            ):
+                return cookie
+        return None
+
+    def has_cookie(
+        self,
+        key: str,
+        path: str = "/",
+        domain: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ) -> bool:
+        for cookie in self.cookies:
+            if (
+                cookie.key == Cookie.make_key(key, host_prefix, secure_prefix)
+                and cookie.path == path
+                and cookie.domain == domain
+            ):
+                return True
+        return False
+
+    def add_cookie(
+        self,
+        key: str,
+        value: str,
+        *,
+        path: str = "/",
+        domain: Optional[str] = None,
+        secure: bool = True,
+        max_age: Optional[int] = None,
+        expires: Optional[datetime] = None,
+        httponly: bool = False,
+        samesite: Optional[SameSite] = "Lax",
+        partitioned: bool = False,
+        comment: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ) -> Cookie:
+        """
+        Add a cookie to the CookieJar
+
+        :param key: Key of the cookie
+        :type key: str
+        :param value: Value of the cookie
+        :type value: str
+        :param path: Path of the cookie, defaults to None
+        :type path: Optional[str], optional
+        :param domain: Domain of the cookie, defaults to None
+        :type domain: Optional[str], optional
+        :param secure: Whether to set it as a secure cookie, defaults to True
+        :type secure: bool
+        :param max_age: Max age of the cookie in seconds; if set to 0 a
+            browser should delete it, defaults to None
+        :type max_age: Optional[int], optional
+        :param expires: When the cookie expires; if set to None browsers
+            should set it as a session cookie, defaults to None
+        :type expires: Optional[datetime], optional
+        :param httponly: Whether to set it as HTTP only, defaults to False
+        :type httponly: bool
+        :param samesite: How to set the samesite property, should be
+            strict, lax or none (case insensitive), defaults to Lax
+        :type samesite: Optional[SameSite], optional
+        :param partitioned: Whether to set it as partitioned, defaults to False
+        :type partitioned: bool
+        :param comment: A cookie comment, defaults to None
+        :type comment: Optional[str], optional
+        :param host_prefix: Whether to add __Host- as a prefix to the key.
+            This requires that path="/", domain=None, and secure=True,
+            defaults to False
+        :type host_prefix: bool
+        :param secure_prefix: Whether to add __Secure- as a prefix to the key.
+            This requires that secure=True, defaults to False
+        :type secure_prefix: bool
+        :return: The instance of the created cookie
+        :rtype: Cookie
+        """
+        cookie = Cookie(
+            key,
+            value,
+            path=path,
+            expires=expires,
+            comment=comment,
+            domain=domain,
+            max_age=max_age,
+            secure=secure,
+            httponly=httponly,
+            samesite=samesite,
+            partitioned=partitioned,
+            host_prefix=host_prefix,
+            secure_prefix=secure_prefix,
+        )
+        self.headers.add(self.HEADER_KEY, cookie)
+
+        # This should be removed in v24.3
+        super().__setitem__(key, cookie)
+
+        return cookie
+
+    def delete_cookie(
+        self,
+        key: str,
+        *,
+        path: str = "/",
+        domain: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ) -> None:
+        """
+        Delete a cookie
+
+        This will effectively set it as Max-Age: 0, which a browser should
+        interpret it to mean: "delete the cookie".
+
+        Since it is a browser/client implementation, your results may vary
+        depending upon which client is being used.
+
+        :param key: The key to be deleted
+        :type key: str
+        :param path: Path of the cookie, defaults to None
+        :type path: Optional[str], optional
+        :param domain: Domain of the cookie, defaults to None
+        :type domain: Optional[str], optional
+        :param host_prefix: Whether to add __Host- as a prefix to the key.
+            This requires that path="/", domain=None, and secure=True,
+            defaults to False
+        :type host_prefix: bool
+        :param secure_prefix: Whether to add __Secure- as a prefix to the key.
+            This requires that secure=True, defaults to False
+        :type secure_prefix: bool
+        """
+        # remove it from header
+        cookies: List[Cookie] = self.headers.popall(self.HEADER_KEY, [])
+        for cookie in cookies:
+            if (
+                cookie.key != Cookie.make_key(key, host_prefix, secure_prefix)
+                or cookie.path != path
+                or cookie.domain != domain
+            ):
+                self.headers.add(self.HEADER_KEY, cookie)
+
+        # This should be removed in v24.3
+        try:
+            super().__delitem__(key)
+        except KeyError:
+            ...
+
+        self.add_cookie(
+            key=key,
+            value="",
+            path=path,
+            domain=domain,
+            max_age=0,
+            samesite=None,
+            host_prefix=host_prefix,
+            secure_prefix=secure_prefix,
+        )
+
+
+# In v24.3, we should remove this as being a subclass of dict
+# Instead, it should be an object with __slots__
+# All of the current property accessors should be removed in favor
+# of actual slotted properties.
+class Cookie(dict):
+    """A stripped down version of Morsel from SimpleCookie"""
+
+    HOST_PREFIX = "__Host-"
+    SECURE_PREFIX = "__Secure-"
+
+    _keys = {
+        "path": "Path",
+        "comment": "Comment",
+        "domain": "Domain",
+        "max-age": "Max-Age",
+        "expires": "expires",
+        "samesite": "SameSite",
+        "version": "Version",
+        "secure": "Secure",
+        "httponly": "HttpOnly",
+        "partitioned": "Partitioned",
+    }
+    _flags = {"secure", "httponly", "partitioned"}
+
+    def __init__(
+        self,
+        key: str,
+        value: str,
+        *,
+        path: str = "/",
+        domain: Optional[str] = None,
+        secure: bool = True,
+        max_age: Optional[int] = None,
+        expires: Optional[datetime] = None,
+        httponly: bool = False,
+        samesite: Optional[SameSite] = "Lax",
+        partitioned: bool = False,
+        comment: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ):
+        if key in self._keys:
+            raise KeyError("Cookie name is a reserved word")
+        if not _is_legal_key(key):
+            raise KeyError("Cookie key contains illegal characters")
+        if host_prefix:
+            if not secure:
+                raise ServerError(
+                    "Cannot set host_prefix on a cookie without secure=True"
+                )
+            if path != "/":
+                raise ServerError(
+                    "Cannot set host_prefix on a cookie unless path='/'"
+                )
+            if domain:
+                raise ServerError(
+                    "Cannot set host_prefix on a cookie with a defined domain"
+                )
+        elif secure_prefix and not secure:
+            raise ServerError(
+                "Cannot set secure_prefix on a cookie without secure=True"
+            )
+        if partitioned and not host_prefix:
+            # This is technically possible, but it is not advisable so we will
+            # take a stand and say "don't shoot yourself in the foot"
+            raise ServerError(
+                "Cannot create a partitioned cookie without "
+                "also setting host_prefix=True"
+            )
+
+        self.key = self.make_key(key, host_prefix, secure_prefix)
+        self.value = value
+        super().__init__()
+
+        # This is a temporary solution while this object is a dict. We update
+        # all of the values in bulk, except for the values that have
+        # key-specific validation in _set_value
+        self.update(
+            {
+                "path": path,
+                "comment": comment,
+                "domain": domain,
+                "secure": secure,
+                "httponly": httponly,
+                "partitioned": partitioned,
+                "expires": None,
+                "max-age": None,
+                "samesite": None,
+            }
+        )
+        if expires is not None:
+            self._set_value("expires", expires)
+        if max_age is not None:
+            self._set_value("max-age", max_age)
+        if samesite is not None:
+            self._set_value("samesite", samesite)
+
+    def __setitem__(self, key, value):
+        deprecation(
+            "Setting values on a Cookie object as a dict has been deprecated. "
+            "This feature will be removed in v24.3. You should instead set "
+            f"values on cookies as object properties: cookie.{key}=... ",
+            24.3,
+        )
+        self._set_value(key, value)
+
+    # This is a temporary method for backwards compat and should be removed
+    # in v24.3 when this is no longer a dict
+    def _set_value(self, key: str, value: Any) -> None:
+        if key not in self._keys:
+            raise KeyError("Unknown cookie property: %s=%s" % (key, value))
+
+        if value is not None:
+            if key.lower() == "max-age" and not str(value).isdigit():
+                raise ValueError("Cookie max-age must be an integer")
+            elif key.lower() == "expires" and not isinstance(value, datetime):
+                raise TypeError("Cookie 'expires' property must be a datetime")
+            elif key.lower() == "samesite":
+                if value.lower() not in SAMESITE_VALUES:
+                    raise TypeError(
+                        "Cookie 'samesite' property must "
+                        f"be one of: {','.join(SAMESITE_VALUES)}"
+                    )
+                value = value.title()
+
+        super().__setitem__(key, value)
+
+    def encode(self, encoding):
+        """
+        Encode the cookie content in a specific type of encoding instructed
+        by the developer. Leverages the :func:`str.encode` method provided
+        by python.
+
+        This method can be used to encode and embed ``utf-8`` content into
+        the cookies.
+
+        :param encoding: Encoding to be used with the cookie
+        :return: Cookie encoded in a codec of choosing.
+        :except: UnicodeEncodeError
+        """
+        deprecation(
+            "Direct encoding of a Cookie object has been deprecated and will "
+            "be removed in v24.3.",
+            24.3,
+        )
+        return str(self).encode(encoding)
+
+    def __str__(self):
+        """Format as a Set-Cookie header value."""
+        output = ["%s=%s" % (self.key, _quote(self.value))]
+        key_index = list(self._keys)
+        for key, value in sorted(
+            self.items(), key=lambda x: key_index.index(x[0])
+        ):
+            if value is not None and value is not False:
+                if key == "max-age":
+                    try:
+                        output.append("%s=%d" % (self._keys[key], value))
+                    except TypeError:
+                        output.append("%s=%s" % (self._keys[key], value))
+                elif key == "expires":
+                    output.append(
+                        "%s=%s"
+                        % (
+                            self._keys[key],
+                            value.strftime("%a, %d-%b-%Y %T GMT"),
+                        )
+                    )
+                elif key in self._flags:
+                    output.append(self._keys[key])
+                else:
+                    output.append("%s=%s" % (self._keys[key], value))
+
+        return "; ".join(output)
+
+    @property
+    def path(self) -> str:  # no cov
+        return self["path"]
+
+    @path.setter
+    def path(self, value: str) -> None:  # no cov
+        self._set_value("path", value)
+
+    @property
+    def expires(self) -> Optional[datetime]:  # no cov
+        return self.get("expires")
+
+    @expires.setter
+    def expires(self, value: datetime) -> None:  # no cov
+        self._set_value("expires", value)
+
+    @property
+    def comment(self) -> Optional[str]:  # no cov
+        return self.get("comment")
+
+    @comment.setter
+    def comment(self, value: str) -> None:  # no cov
+        self._set_value("comment", value)
+
+    @property
+    def domain(self) -> Optional[str]:  # no cov
+        return self.get("domain")
+
+    @domain.setter
+    def domain(self, value: str) -> None:  # no cov
+        self._set_value("domain", value)
+
+    @property
+    def max_age(self) -> Optional[int]:  # no cov
+        return self.get("max-age")
+
+    @max_age.setter
+    def max_age(self, value: int) -> None:  # no cov
+        self._set_value("max-age", value)
+
+    @property
+    def secure(self) -> bool:  # no cov
+        return self.get("secure", False)
+
+    @secure.setter
+    def secure(self, value: bool) -> None:  # no cov
+        self._set_value("secure", value)
+
+    @property
+    def httponly(self) -> bool:  # no cov
+        return self.get("httponly", False)
+
+    @httponly.setter
+    def httponly(self, value: bool) -> None:  # no cov
+        self._set_value("httponly", value)
+
+    @property
+    def samesite(self) -> Optional[SameSite]:  # no cov
+        return self.get("samesite")
+
+    @samesite.setter
+    def samesite(self, value: SameSite) -> None:  # no cov
+        self._set_value("samesite", value)
+
+    @property
+    def partitioned(self) -> bool:  # no cov
+        return self.get("partitioned", False)
+
+    @partitioned.setter
+    def partitioned(self, value: bool) -> None:  # no cov
+        self._set_value("partitioned", value)
+
+    @classmethod
+    def make_key(
+        cls, key: str, host_prefix: bool = False, secure_prefix: bool = False
+    ) -> str:
+        if host_prefix and secure_prefix:
+            raise ServerError(
+                "Both host_prefix and secure_prefix were requested. "
+                "A cookie should have only one prefix."
+            )
+        elif host_prefix:
+            key = cls.HOST_PREFIX + key
+        elif secure_prefix:
+            key = cls.SECURE_PREFIX + key
+        return key

sanic/errorpages.py

@@ -12,6 +12,7 @@ Setting ``app.config.FALLBACK_ERROR_FORMAT = "auto"`` will enable a switch that
 will attempt to provide an appropriate response format based upon the
 request type.
 """
+from __future__ import annotations
 
 import sys
 import typing as t
@@ -21,8 +22,9 @@ from traceback import extract_tb
 
 from sanic.exceptions import BadRequest, SanicException
 from sanic.helpers import STATUS_CODES
-from sanic.request import Request
+from sanic.log import deprecation, logger
-from sanic.response import HTTPResponse, html, json, text
+from sanic.pages.error import ErrorPage
+from sanic.response import html, json, text
 
 
 dumps: t.Callable[..., str]
@@ -33,13 +35,15 @@ try:
 except ImportError:  # noqa
     from json import dumps
 
+if t.TYPE_CHECKING:
+    from sanic import HTTPResponse, Request
 
 DEFAULT_FORMAT = "auto"
-FALLBACK_TEXT = (
+FALLBACK_TEXT = """\
-    "The server encountered an internal error and "
+The application encountered an unexpected error and could not continue.\
-    "cannot complete your request."
+"""
-)
 FALLBACK_STATUS = 500
+JSON = "application/json"
 
 
 class BaseRenderer:
@@ -113,134 +117,18 @@ class HTMLRenderer(BaseRenderer):
     The default fallback type.
     """
 
-    TRACEBACK_STYLE = """
-        html { font-family: sans-serif }
-        h2 { color: #888; }
-        .tb-wrapper p, dl, dd { margin: 0 }
-        .frame-border { margin: 1rem }
-        .frame-line > *, dt, dd { padding: 0.3rem 0.6rem }
-        .frame-line, dl { margin-bottom: 0.3rem }
-        .frame-code, dd { font-size: 16px; padding-left: 4ch }
-        .tb-wrapper, dl { border: 1px solid #eee }
-        .tb-header,.obj-header {
-            background: #eee; padding: 0.3rem; font-weight: bold
-        }
-        .frame-descriptor, dt { background: #e2eafb; font-size: 14px }
-    """
-    TRACEBACK_WRAPPER_HTML = (
-        "<div class=tb-header>{exc_name}: {exc_value}</div>"
-        "<div class=tb-wrapper>{frame_html}</div>"
-    )
-    TRACEBACK_BORDER = (
-        "<div class=frame-border>"
-        "The above exception was the direct cause of the following exception:"
-        "</div>"
-    )
-    TRACEBACK_LINE_HTML = (
-        "<div class=frame-line>"
-        "<p class=frame-descriptor>"
-        "File {0.filename}, line <i>{0.lineno}</i>, "
-        "in <code><b>{0.name}</b></code>"
-        "<p class=frame-code><code>{0.line}</code>"
-        "</div>"
-    )
-    OBJECT_WRAPPER_HTML = (
-        "<div class=obj-header>{title}</div>"
-        "<dl class={obj_type}>{display_html}</dl>"
-    )
-    OBJECT_DISPLAY_HTML = "<dt>{key}</dt><dd><code>{value}</code></dd>"
-    OUTPUT_HTML = (
-        "<!DOCTYPE html><html lang=en>"
-        "<meta charset=UTF-8><title>{title}</title>\n"
-        "<style>{style}</style>\n"
-        "<h1>{title}</h1><p>{text}\n"
-        "{body}"
-    )
-
     def full(self) -> HTTPResponse:
-        return html(
+        page = ErrorPage(
-            self.OUTPUT_HTML.format(
+            debug=self.debug,
-                title=self.title,
+            title=super().title,
-                text=self.text,
+            text=super().text,
-                style=self.TRACEBACK_STYLE,
+            request=self.request,
-                body=self._generate_body(full=True),
+            exc=self.exception,
-            ),
-            status=self.status,
         )
+        return html(page.render(), status=self.status, headers=self.headers)
 
     def minimal(self) -> HTTPResponse:
-        return html(
+        return self.full()
-            self.OUTPUT_HTML.format(
-                title=self.title,
-                text=self.text,
-                style=self.TRACEBACK_STYLE,
-                body=self._generate_body(full=False),
-            ),
-            status=self.status,
-            headers=self.headers,
-        )
-
-    @property
-    def text(self):
-        return escape(super().text)
-
-    @property
-    def title(self):
-        return escape(f"⚠️ {super().title}")
-
-    def _generate_body(self, *, full):
-        lines = []
-        if full:
-            _, exc_value, __ = sys.exc_info()
-            exceptions = []
-            while exc_value:
-                exceptions.append(self._format_exc(exc_value))
-                exc_value = exc_value.__cause__
-
-            traceback_html = self.TRACEBACK_BORDER.join(reversed(exceptions))
-            appname = escape(self.request.app.name)
-            name = escape(self.exception.__class__.__name__)
-            value = escape(self.exception)
-            path = escape(self.request.path)
-            lines += [
-                f"<h2>Traceback of {appname} " "(most recent call last):</h2>",
-                f"{traceback_html}",
-                "<div class=summary><p>",
-                f"<b>{name}: {value}</b> "
-                f"while handling path <code>{path}</code>",
-                "</div>",
-            ]
-
-        for attr, display in (("context", True), ("extra", bool(full))):
-            info = getattr(self.exception, attr, None)
-            if info and display:
-                lines.append(self._generate_object_display(info, attr))
-
-        return "\n".join(lines)
-
-    def _generate_object_display(
-        self, obj: t.Dict[str, t.Any], descriptor: str
-    ) -> str:
-        display = "".join(
-            self.OBJECT_DISPLAY_HTML.format(key=key, value=value)
-            for key, value in obj.items()
-        )
-        return self.OBJECT_WRAPPER_HTML.format(
-            title=descriptor.title(),
-            display_html=display,
-            obj_type=descriptor.lower(),
-        )
-
-    def _format_exc(self, exc):
-        frames = extract_tb(exc.__traceback__)
-        frame_html = "".join(
-            self.TRACEBACK_LINE_HTML.format(frame) for frame in frames
-        )
-        return self.TRACEBACK_WRAPPER_HTML.format(
-            exc_name=escape(exc.__class__.__name__),
-            exc_value=escape(exc),
-            frame_html=frame_html,
-        )
 
 
 class TextRenderer(BaseRenderer):
@@ -388,32 +276,26 @@ def escape(text):
     return f"{text}".replace("&", "&amp;").replace("<", "&lt;")
 
 
-RENDERERS_BY_CONFIG = {
+MIME_BY_CONFIG = {
-    "html": HTMLRenderer,
+    "text": "text/plain",
-    "json": JSONRenderer,
+    "json": "application/json",
-    "text": TextRenderer,
+    "html": "text/html",
 }
-
+CONFIG_BY_MIME = {v: k for k, v in MIME_BY_CONFIG.items()}
 RENDERERS_BY_CONTENT_TYPE = {
     "text/plain": TextRenderer,
     "application/json": JSONRenderer,
     "multipart/form-data": HTMLRenderer,
     "text/html": HTMLRenderer,
 }
-CONTENT_TYPE_BY_RENDERERS = {
-    v: k for k, v in RENDERERS_BY_CONTENT_TYPE.items()
-}
 
+# Handler source code is checked for which response types it returns with the
+# route error_format="auto" (default) to determine which format to use.
 RESPONSE_MAPPING = {
-    "empty": "html",
     "json": "json",
     "text": "text",
-    "raw": "text",
     "html": "html",
-    "file": "html",
+    "JSONResponse": "json",
-    "file_stream": "text",
-    "stream": "text",
-    "redirect": "html",
     "text/plain": "text",
     "text/html": "html",
     "application/json": "json",
@@ -421,7 +303,7 @@ RESPONSE_MAPPING = {
 
 
 def check_error_format(format):
-    if format not in RENDERERS_BY_CONFIG and format != "auto":
+    if format not in MIME_BY_CONFIG and format != "auto":
         raise SanicException(f"Unknown format: {format}")
 
 
@@ -436,98 +318,68 @@ def exception_response(
     """
     Render a response for the default FALLBACK exception handler.
     """
-    content_type = None
-
     if not renderer:
-        # Make sure we have something set
+        mt = guess_mime(request, fallback)
-        renderer = base
+        renderer = RENDERERS_BY_CONTENT_TYPE.get(mt, base)
-        render_format = fallback
-
-        if request:
-            # If there is a request, try and get the format
-            # from the route
-            if request.route:
-                try:
-                    if request.route.ctx.error_format:
-                        render_format = request.route.ctx.error_format
-                except AttributeError:
-                    ...
-
-            content_type = request.headers.getone("content-type", "").split(
-                ";"
-            )[0]
-
-            acceptable = request.accept
-
-            # If the format is auto still, make a guess
-            if render_format == "auto":
-                # First, if there is an Accept header, check if text/html
-                # is the first option
-                # According to MDN Web Docs, all major browsers use text/html
-                # as the primary value in Accept (with the exception of IE 8,
-                # and, well, if you are supporting IE 8, then you have bigger
-                # problems to concern yourself with than what default exception
-                # renderer is used)
-                # Source:
-                # https://developer.mozilla.org/en-US/docs/Web/HTTP/Content_negotiation/List_of_default_Accept_values
-
-                if acceptable and acceptable[0].match(
-                    "text/html",
-                    allow_type_wildcard=False,
-                    allow_subtype_wildcard=False,
-                ):
-                    renderer = HTMLRenderer
-
-                # Second, if there is an Accept header, check if
-                # application/json is an option, or if the content-type
-                # is application/json
-                elif (
-                    acceptable
-                    and acceptable.match(
-                        "application/json",
-                        allow_type_wildcard=False,
-                        allow_subtype_wildcard=False,
-                    )
-                    or content_type == "application/json"
-                ):
-                    renderer = JSONRenderer
-
-                # Third, if there is no Accept header, assume we want text.
-                # The likely use case here is a raw socket.
-                elif not acceptable:
-                    renderer = TextRenderer
-                else:
-                    # Fourth, look to see if there was a JSON body
-                    # When in this situation, the request is probably coming
-                    # from curl, an API client like Postman or Insomnia, or a
-                    # package like requests or httpx
-                    try:
-                        # Give them the benefit of the doubt if they did:
-                        # $ curl localhost:8000 -d '{"foo": "bar"}'
-                        # And provide them with JSONRenderer
-                        renderer = JSONRenderer if request.json else base
-                    except BadRequest:
-                        renderer = base
-            else:
-                renderer = RENDERERS_BY_CONFIG.get(render_format, renderer)
-
-            # Lastly, if there is an Accept header, make sure
-            # our choice is okay
-            if acceptable:
-                type_ = CONTENT_TYPE_BY_RENDERERS.get(renderer)  # type: ignore
-                if type_ and type_ not in acceptable:
-                    # If the renderer selected is not in the Accept header
-                    # look through what is in the Accept header, and select
-                    # the first option that matches. Otherwise, just drop back
-                    # to the original default
-                    for accept in acceptable:
-                        mtype = f"{accept.type_}/{accept.subtype}"
-                        maybe = RENDERERS_BY_CONTENT_TYPE.get(mtype)
-                        if maybe:
-                            renderer = maybe
-                            break
-                    else:
-                        renderer = base
 
     renderer = t.cast(t.Type[BaseRenderer], renderer)
     return renderer(request, exception, debug).render()
+
+
+def guess_mime(req: Request, fallback: str) -> str:
+    # Attempt to find a suitable MIME format for the response.
+    # Insertion-ordered map of formats["html"] = "source of that suggestion"
+    formats = {}
+    name = ""
+    # Route error_format (by magic from handler code if auto, the default)
+    if req.route:
+        name = req.route.name
+        f = req.route.extra.error_format
+        if f in MIME_BY_CONFIG:
+            formats[f] = name
+
+    if not formats and fallback in MIME_BY_CONFIG:
+        formats[fallback] = "FALLBACK_ERROR_FORMAT"
+
+    # If still not known, check for the request for clues of JSON
+    if not formats and fallback == "auto" and req.accept.match(JSON):
+        if JSON in req.accept:  # Literally, not wildcard
+            formats["json"] = "request.accept"
+        elif JSON in req.headers.getone("content-type", ""):
+            formats["json"] = "content-type"
+        # DEPRECATION: Remove this block in 24.3
+        else:
+            c = None
+            try:
+                c = req.json
+            except BadRequest:
+                pass
+            if c:
+                formats["json"] = "request.json"
+                deprecation(
+                    "Response type was determined by the JSON content of "
+                    "the request. This behavior is deprecated and will be "
+                    "removed in v24.3. Please specify the format either by\n"
+                    f'  error_format="json" on route {name}, by\n'
+                    '  FALLBACK_ERROR_FORMAT = "json", or by adding header\n'
+                    "  accept: application/json to your requests.",
+                    24.3,
+                )
+
+    # Any other supported formats
+    if fallback == "auto":
+        for k in MIME_BY_CONFIG:
+            if k not in formats:
+                formats[k] = "any"
+
+    mimes = [MIME_BY_CONFIG[k] for k in formats]
+    m = req.accept.match(*mimes)
+    if m:
+        format = CONFIG_BY_MIME[m.mime]
+        source = formats[format]
+        logger.debug(
+            f"The client accepts {m.header}, using '{format}' from {source}"
+        )
+    else:
+        logger.debug(f"No format found, the client accepts {req.accept!r}")
+    return m.mime

sanic/exceptions.py

@@ -1,50 +1,167 @@
-from typing import Any, Dict, Optional, Union
+from asyncio import CancelledError, Protocol
+from os import PathLike
+from typing import Any, Dict, Optional, Sequence, Union
 
 from sanic.helpers import STATUS_CODES
 
 
+class RequestCancelled(CancelledError):
+    quiet = True
+
+
+class ServerKilled(Exception):
+    """
+    Exception Sanic server uses when killing a server process for something
+    unexpected happening.
+    """
+
+
 class SanicException(Exception):
+    """
+    Generic exception that will generate an HTTP response when raised
+    in the context of a request lifecycle.
+
+    Usually it is best practice to use one of the more specific exceptions
+    than this generic. Even when trying to raise a 500, it is generally
+    preferrable to use :class:`.ServerError`
+
+    .. code-block:: python
+
+        raise SanicException(
+            "Something went wrong",
+            status_code=999,
+            context={
+                "info": "Some additional details",
+            },
+            headers={
+                "X-Foo": "bar"
+            }
+        )
+
+    :param message: The message to be sent to the client. If ``None``
+        then the appropriate HTTP response status message will be used
+        instead, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param status_code: The HTTP response code to send, if applicable. If
+        ``None``, then it will be 500, defaults to None
+    :type status_code: Optional[int], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
+    """
+
+    status_code: int = 500
+    quiet: Optional[bool] = False
+    headers: Dict[str, str] = {}
     message: str = ""
 
     def __init__(
         self,
         message: Optional[Union[str, bytes]] = None,
         status_code: Optional[int] = None,
+        *,
         quiet: Optional[bool] = None,
         context: Optional[Dict[str, Any]] = None,
         extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
     ) -> None:
         self.context = context
         self.extra = extra
+        status_code = status_code or getattr(
+            self.__class__, "status_code", None
+        )
+        quiet = quiet or getattr(self.__class__, "quiet", None)
+        headers = headers or getattr(self.__class__, "headers", {})
         if message is None:
             if self.message:
                 message = self.message
-            elif status_code is not None:
+            elif status_code:
                 msg: bytes = STATUS_CODES.get(status_code, b"")
                 message = msg.decode("utf8")
 
         super().__init__(message)
 
-        if status_code is not None:
+        self.status_code = status_code
-            self.status_code = status_code
+        self.quiet = quiet
-
+        self.headers = headers
-        # quiet=None/False/True with None meaning choose by status
-        if quiet or quiet is None and status_code not in (None, 500):
-            self.quiet = True
 
 
-class NotFound(SanicException):
+class HTTPException(SanicException):
+    """
+    A base class for other exceptions and should not be called directly.
+    """
+
+    def __init__(
+        self,
+        message: Optional[Union[str, bytes]] = None,
+        *,
+        quiet: Optional[bool] = None,
+        context: Optional[Dict[str, Any]] = None,
+        extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        super().__init__(
+            message,
+            quiet=quiet,
+            context=context,
+            extra=extra,
+            headers=headers,
+        )
+
+
+class NotFound(HTTPException):
     """
     **Status**: 404 Not Found
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Not Found' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 404
     quiet = True
 
 
-class BadRequest(SanicException):
+class BadRequest(HTTPException):
     """
     **Status**: 400 Bad Request
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Bad Request' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 400
@@ -52,51 +169,133 @@ class BadRequest(SanicException):
 
 
 InvalidUsage = BadRequest
+BadURL = BadRequest
 
 
-class BadURL(BadRequest):
+class MethodNotAllowed(HTTPException):
-    ...
-
-
-class MethodNotAllowed(SanicException):
     """
     **Status**: 405 Method Not Allowed
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Method Not Allowed' will be sent,
+        defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param method: The HTTP method that was used, defaults to  an empty string
+    :type method: Optional[str], optional
+    :param allowed_methods: The HTTP methods that can be used instead of the
+        one that was attempted
+    :type allowed_methods: Optional[Sequence[str]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 405
     quiet = True
 
-    def __init__(self, message, method, allowed_methods):
+    def __init__(
-        super().__init__(message)
+        self,
-        self.headers = {"Allow": ", ".join(allowed_methods)}
+        message: Optional[Union[str, bytes]] = None,
+        method: str = "",
+        allowed_methods: Optional[Sequence[str]] = None,
+        *,
+        quiet: Optional[bool] = None,
+        context: Optional[Dict[str, Any]] = None,
+        extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
+    ):
+        super().__init__(
+            message,
+            quiet=quiet,
+            context=context,
+            extra=extra,
+            headers=headers,
+        )
+        if allowed_methods:
+            self.headers = {
+                **self.headers,
+                "Allow": ", ".join(allowed_methods),
+            }
+        self.method = method
+        self.allowed_methods = allowed_methods
 
 
 MethodNotSupported = MethodNotAllowed
 
 
-class ServerError(SanicException):
+class ServerError(HTTPException):
     """
     **Status**: 500 Internal Server Error
+
+    A general server-side error has occurred. If no other HTTP exception is
+    appropriate, then this should be used
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Internal Server Error' will be sent,
+         defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 500
 
 
-class ServiceUnavailable(SanicException):
+InternalServerError = ServerError
+
+
+class ServiceUnavailable(HTTPException):
     """
     **Status**: 503 Service Unavailable
 
     The server is currently unavailable (because it is overloaded or
     down for maintenance). Generally, this is a temporary state.
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Bad Request' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 503
     quiet = True
 
 
-class URLBuildError(ServerError):
+class URLBuildError(HTTPException):
     """
     **Status**: 500 Internal Server Error
+
+    An exception used by Sanic internals when unable to build a URL.
     """
 
     status_code = 500
@@ -105,30 +304,77 @@ class URLBuildError(ServerError):
 class FileNotFound(NotFound):
     """
     **Status**: 404 Not Found
+
+    A specific form of :class:`.NotFound` that is specifically when looking
+    for a file on the file system at a known path.
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Not Found' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param path: The path, if any, to the file that could not
+        be found, defaults to None
+    :type path: Optional[PathLike], optional
+    :param relative_url: A relative URL of the file, defaults to None
+    :type relative_url: Optional[str], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
-    def __init__(self, message, path, relative_url):
+    def __init__(
-        super().__init__(message)
+        self,
+        message: Optional[Union[str, bytes]] = None,
+        path: Optional[PathLike] = None,
+        relative_url: Optional[str] = None,
+        *,
+        quiet: Optional[bool] = None,
+        context: Optional[Dict[str, Any]] = None,
+        extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
+    ):
+        super().__init__(
+            message,
+            quiet=quiet,
+            context=context,
+            extra=extra,
+            headers=headers,
+        )
         self.path = path
         self.relative_url = relative_url
 
 
-class RequestTimeout(SanicException):
+class RequestTimeout(HTTPException):
-    """The Web server (running the Web site) thinks that there has been too
+    """
+    The Web server (running the Web site) thinks that there has been too
     long an interval of time between 1) the establishment of an IP
     connection (socket) between the client and the server and
     2) the receipt of any data on that socket, so the server has dropped
     the connection. The socket connection has actually been lost - the Web
     server has 'timed out' on that particular socket connection.
+
+    This is an internal exception thrown by Sanic and should not be used
+    directly.
     """
 
     status_code = 408
     quiet = True
 
 
-class PayloadTooLarge(SanicException):
+class PayloadTooLarge(HTTPException):
     """
     **Status**: 413 Payload Too Large
+
+    This is an internal exception thrown by Sanic and should not be used
+    directly.
     """
 
     status_code = 413
@@ -138,34 +384,126 @@ class PayloadTooLarge(SanicException):
 class HeaderNotFound(BadRequest):
     """
     **Status**: 400 Bad Request
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Bad Request' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
 
 class InvalidHeader(BadRequest):
     """
     **Status**: 400 Bad Request
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Bad Request' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
 
-class RangeNotSatisfiable(SanicException):
+class ContentRange(Protocol):
+    total: int
+
+
+class RangeNotSatisfiable(HTTPException):
     """
     **Status**: 416 Range Not Satisfiable
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Range Not Satisfiable' will be sent,
+        defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param content_range: An object meeting the :class:`.ContentRange` protocol
+        that has a ``total`` property, defaults to None
+    :type content_range: Optional[ContentRange], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 416
     quiet = True
 
-    def __init__(self, message, content_range):
+    def __init__(
-        super().__init__(message)
+        self,
-        self.headers = {"Content-Range": f"bytes */{content_range.total}"}
+        message: Optional[Union[str, bytes]] = None,
+        content_range: Optional[ContentRange] = None,
+        *,
+        quiet: Optional[bool] = None,
+        context: Optional[Dict[str, Any]] = None,
+        extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
+    ):
+        super().__init__(
+            message,
+            quiet=quiet,
+            context=context,
+            extra=extra,
+            headers=headers,
+        )
+        if content_range is not None:
+            self.headers = {
+                **self.headers,
+                "Content-Range": f"bytes */{content_range.total}",
+            }
 
 
 ContentRangeError = RangeNotSatisfiable
 
 
-class ExpectationFailed(SanicException):
+class ExpectationFailed(HTTPException):
     """
     **Status**: 417 Expectation Failed
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Expectation Failed' will be sent,
+        defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 417
@@ -175,9 +513,25 @@ class ExpectationFailed(SanicException):
 HeaderExpectationFailed = ExpectationFailed
 
 
-class Forbidden(SanicException):
+class Forbidden(HTTPException):
     """
     **Status**: 403 Forbidden
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Forbidden' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 403
@@ -193,20 +547,33 @@ class InvalidRangeType(RangeNotSatisfiable):
     quiet = True
 
 
-class PyFileError(Exception):
+class PyFileError(SanicException):
-    def __init__(self, file):
+    def __init__(
-        super().__init__("could not execute config file %s", file)
+        self,
+        file,
+        status_code: Optional[int] = None,
+        *,
+        quiet: Optional[bool] = None,
+        context: Optional[Dict[str, Any]] = None,
+        extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
+    ):
+        super().__init__(
+            "could not execute config file %s" % file,
+            status_code=status_code,
+            quiet=quiet,
+            context=context,
+            extra=extra,
+            headers=headers,
+        )
 
 
-class Unauthorized(SanicException):
+class Unauthorized(HTTPException):
     """
     **Status**: 401 Unauthorized
 
-    :param message: Message describing the exception.
+    When present, additional keyword arguments may be used to complete
-    :param status_code: HTTP Status code.
+    the WWW-Authentication header.
-    :param scheme: Name of the authentication scheme to be used.
-
-    When present, kwargs is used to complete the WWW-Authentication header.
 
     Examples::
 
@@ -231,21 +598,58 @@ class Unauthorized(SanicException):
         raise Unauthorized("Auth required.",
                            scheme="Bearer",
                            realm="Restricted Area")
+
+    :param message: The message to be sent to the client. If ``None``
+        then the HTTP status 'Bad Request' will be sent, defaults to None
+    :type message: Optional[Union[str, bytes]], optional
+    :param scheme: Name of the authentication scheme to be used.
+    :type scheme: Optional[str], optional
+    :param quiet: When ``True``, the error traceback will be suppressed
+        from the logs, defaults to None
+    :type quiet: Optional[bool], optional
+    :param context: Additional mapping of key/value data that will be
+        sent to the client upon exception, defaults to None
+    :type context: Optional[Dict[str, Any]], optional
+    :param extra: Additional mapping of key/value data that will NOT be
+        sent to the client when in PRODUCTION mode, defaults to None
+    :type extra: Optional[Dict[str, Any]], optional
+    :param headers: Additional headers that should be sent with the HTTP
+        response, defaults to None
+    :type headers: Optional[Dict[str, Any]], optional
     """
 
     status_code = 401
     quiet = True
 
-    def __init__(self, message, status_code=None, scheme=None, **kwargs):
+    def __init__(
-        super().__init__(message, status_code)
+        self,
+        message: Optional[Union[str, bytes]] = None,
+        scheme: Optional[str] = None,
+        *,
+        quiet: Optional[bool] = None,
+        context: Optional[Dict[str, Any]] = None,
+        extra: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, Any]] = None,
+        **challenges,
+    ):
+        super().__init__(
+            message,
+            quiet=quiet,
+            context=context,
+            extra=extra,
+            headers=headers,
+        )
 
         # if auth-scheme is specified, set "WWW-Authenticate" header
         if scheme is not None:
-            values = ['{!s}="{!s}"'.format(k, v) for k, v in kwargs.items()]
+            values = [
+                '{!s}="{!s}"'.format(k, v) for k, v in challenges.items()
+            ]
             challenge = ", ".join(values)
 
             self.headers = {
-                "WWW-Authenticate": f"{scheme} {challenge}".rstrip()
+                **self.headers,
+                "WWW-Authenticate": f"{scheme} {challenge}".rstrip(),
             }
 
 

sanic/handlers/__init__.py

@@ -0,0 +1,10 @@
+from .content_range import ContentRangeHandler
+from .directory import DirectoryHandler
+from .error import ErrorHandler
+
+
+__all__ = (
+    "ContentRangeHandler",
+    "DirectoryHandler",
+    "ErrorHandler",
+)

sanic/handlers/content_range.py

@@ -0,0 +1,78 @@
+from __future__ import annotations
+
+from sanic.exceptions import (
+    HeaderNotFound,
+    InvalidRangeType,
+    RangeNotSatisfiable,
+)
+
+
+class ContentRangeHandler:
+    """
+    A mechanism to parse and process the incoming request headers to
+    extract the content range information.
+
+    :param request: Incoming api request
+    :param stats: Stats related to the content
+
+    :type request: :class:`sanic.request.Request`
+    :type stats: :class:`posix.stat_result`
+
+    :ivar start: Content Range start
+    :ivar end: Content Range end
+    :ivar size: Length of the content
+    :ivar total: Total size identified by the :class:`posix.stat_result`
+        instance
+    :ivar ContentRangeHandler.headers: Content range header ``dict``
+    """
+
+    __slots__ = ("start", "end", "size", "total", "headers")
+
+    def __init__(self, request, stats):
+        self.total = stats.st_size
+        _range = request.headers.getone("range", None)
+        if _range is None:
+            raise HeaderNotFound("Range Header Not Found")
+        unit, _, value = tuple(map(str.strip, _range.partition("=")))
+        if unit != "bytes":
+            raise InvalidRangeType(
+                "%s is not a valid Range Type" % (unit,), self
+            )
+        start_b, _, end_b = tuple(map(str.strip, value.partition("-")))
+        try:
+            self.start = int(start_b) if start_b else None
+        except ValueError:
+            raise RangeNotSatisfiable(
+                "'%s' is invalid for Content Range" % (start_b,), self
+            )
+        try:
+            self.end = int(end_b) if end_b else None
+        except ValueError:
+            raise RangeNotSatisfiable(
+                "'%s' is invalid for Content Range" % (end_b,), self
+            )
+        if self.end is None:
+            if self.start is None:
+                raise RangeNotSatisfiable(
+                    "Invalid for Content Range parameters", self
+                )
+            else:
+                # this case represents `Content-Range: bytes 5-`
+                self.end = self.total - 1
+        else:
+            if self.start is None:
+                # this case represents `Content-Range: bytes -5`
+                self.start = self.total - self.end
+                self.end = self.total - 1
+        if self.start >= self.end:
+            raise RangeNotSatisfiable(
+                "Invalid for Content Range parameters", self
+            )
+        self.size = self.end - self.start + 1
+        self.headers = {
+            "Content-Range": "bytes %s-%s/%s"
+            % (self.start, self.end, self.total)
+        }
+
+    def __bool__(self):
+        return hasattr(self, "size") and self.size > 0

sanic/handlers/directory.py

@@ -0,0 +1,84 @@
+from __future__ import annotations
+
+from datetime import datetime
+from operator import itemgetter
+from pathlib import Path
+from stat import S_ISDIR
+from typing import Dict, Iterable, Optional, Sequence, Union, cast
+
+from sanic.exceptions import NotFound
+from sanic.pages.directory_page import DirectoryPage, FileInfo
+from sanic.request import Request
+from sanic.response import file, html, redirect
+
+
+class DirectoryHandler:
+    def __init__(
+        self,
+        uri: str,
+        directory: Path,
+        directory_view: bool = False,
+        index: Optional[Union[str, Sequence[str]]] = None,
+    ) -> None:
+        if isinstance(index, str):
+            index = [index]
+        elif index is None:
+            index = []
+        self.base = uri.strip("/")
+        self.directory = directory
+        self.directory_view = directory_view
+        self.index = tuple(index)
+
+    async def handle(self, request: Request, path: str):
+        current = path.strip("/")[len(self.base) :].strip("/")  # noqa: E203
+        for file_name in self.index:
+            index_file = self.directory / current / file_name
+            if index_file.is_file():
+                return await file(index_file)
+
+        if self.directory_view:
+            return self._index(
+                self.directory / current, path, request.app.debug
+            )
+
+        if self.index:
+            raise NotFound("File not found")
+
+        raise IsADirectoryError(f"{self.directory.as_posix()} is a directory")
+
+    def _index(self, location: Path, path: str, debug: bool):
+        # Remove empty path elements, append slash
+        if "//" in path or not path.endswith("/"):
+            return redirect(
+                "/" + "".join([f"{p}/" for p in path.split("/") if p])
+            )
+
+        # Render file browser
+        page = DirectoryPage(self._iter_files(location), path, debug)
+        return html(page.render())
+
+    def _prepare_file(self, path: Path) -> Dict[str, Union[int, str]]:
+        stat = path.stat()
+        modified = (
+            datetime.fromtimestamp(stat.st_mtime)
+            .isoformat()[:19]
+            .replace("T", " ")
+        )
+        is_dir = S_ISDIR(stat.st_mode)
+        icon = "📁" if is_dir else "📄"
+        file_name = path.name
+        if is_dir:
+            file_name += "/"
+        return {
+            "priority": is_dir * -1,
+            "file_name": file_name,
+            "icon": icon,
+            "file_access": modified,
+            "file_size": stat.st_size,
+        }
+
+    def _iter_files(self, location: Path) -> Iterable[FileInfo]:
+        prepared = [self._prepare_file(f) for f in location.iterdir()]
+        for item in sorted(prepared, key=itemgetter("priority", "file_name")):
+            del item["priority"]
+            yield cast(FileInfo, item)

sanic/handlers/error.py

@@ -3,12 +3,8 @@ from __future__ import annotations
 from typing import Dict, List, Optional, Tuple, Type
 
 from sanic.errorpages import BaseRenderer, TextRenderer, exception_response
-from sanic.exceptions import (
+from sanic.exceptions import ServerError
-    HeaderNotFound,
+from sanic.log import error_logger
-    InvalidRangeType,
-    RangeNotSatisfiable,
-)
-from sanic.log import deprecation, error_logger
 from sanic.models.handler_types import RouteHandler
 from sanic.response import text
 
@@ -23,7 +19,6 @@ class ErrorHandler:
     by the developers to perform a wide range of tasks from recording the error
     stats to reporting them to an external service that can be used for
     realtime alerting system.
-
     """
 
     def __init__(
@@ -36,17 +31,26 @@ class ErrorHandler:
         self.debug = False
         self.base = base
 
-    @classmethod
-    def finalize(cls, *args, **kwargs):
-        deprecation(
-            "ErrorHandler.finalize is deprecated and no longer needed. "
-            "Please remove update your code to remove it. ",
-            22.12,
-        )
-
     def _full_lookup(self, exception, route_name: Optional[str] = None):
         return self.lookup(exception, route_name)
 
+    def _add(
+        self,
+        key: Tuple[Type[BaseException], Optional[str]],
+        handler: RouteHandler,
+    ) -> None:
+        if key in self.cached_handlers:
+            exc, name = key
+            if name is None:
+                name = "__ALL_ROUTES__"
+
+            message = (
+                f"Duplicate exception handler definition on: route={name} "
+                f"and exception={exc}"
+            )
+            raise ServerError(message)
+        self.cached_handlers[key] = handler
+
     def add(self, exception, handler, route_names: Optional[List[str]] = None):
         """
         Add a new exception handler to an already existing handler object.
@@ -62,9 +66,9 @@ class ErrorHandler:
         """
         if route_names:
             for route in route_names:
-                self.cached_handlers[(exception, route)] = handler
+                self._add((exception, route), handler)
         else:
-            self.cached_handlers[(exception, None)] = handler
+            self._add((exception, None), handler)
 
     def lookup(self, exception, route_name: Optional[str] = None):
         """
@@ -182,74 +186,3 @@ class ErrorHandler:
             error_logger.exception(
                 "Exception occurred while handling uri: %s", url
             )
-
-
-class ContentRangeHandler:
-    """
-    A mechanism to parse and process the incoming request headers to
-    extract the content range information.
-
-    :param request: Incoming api request
-    :param stats: Stats related to the content
-
-    :type request: :class:`sanic.request.Request`
-    :type stats: :class:`posix.stat_result`
-
-    :ivar start: Content Range start
-    :ivar end: Content Range end
-    :ivar size: Length of the content
-    :ivar total: Total size identified by the :class:`posix.stat_result`
-        instance
-    :ivar ContentRangeHandler.headers: Content range header ``dict``
-    """
-
-    __slots__ = ("start", "end", "size", "total", "headers")
-
-    def __init__(self, request, stats):
-        self.total = stats.st_size
-        _range = request.headers.getone("range", None)
-        if _range is None:
-            raise HeaderNotFound("Range Header Not Found")
-        unit, _, value = tuple(map(str.strip, _range.partition("=")))
-        if unit != "bytes":
-            raise InvalidRangeType(
-                "%s is not a valid Range Type" % (unit,), self
-            )
-        start_b, _, end_b = tuple(map(str.strip, value.partition("-")))
-        try:
-            self.start = int(start_b) if start_b else None
-        except ValueError:
-            raise RangeNotSatisfiable(
-                "'%s' is invalid for Content Range" % (start_b,), self
-            )
-        try:
-            self.end = int(end_b) if end_b else None
-        except ValueError:
-            raise RangeNotSatisfiable(
-                "'%s' is invalid for Content Range" % (end_b,), self
-            )
-        if self.end is None:
-            if self.start is None:
-                raise RangeNotSatisfiable(
-                    "Invalid for Content Range parameters", self
-                )
-            else:
-                # this case represents `Content-Range: bytes 5-`
-                self.end = self.total - 1
-        else:
-            if self.start is None:
-                # this case represents `Content-Range: bytes -5`
-                self.start = self.total - self.end
-                self.end = self.total - 1
-        if self.start >= self.end:
-            raise RangeNotSatisfiable(
-                "Invalid for Content Range parameters", self
-            )
-        self.size = self.end - self.start + 1
-        self.headers = {
-            "Content-Range": "bytes %s-%s/%s"
-            % (self.start, self.end, self.total)
-        }
-
-    def __bool__(self):
-        return self.size > 0

sanic/headers.py

@@ -19,7 +19,6 @@ OptionsIterable = Iterable[Tuple[str, str]]  # May contain duplicate keys
 
 _token, _quoted = r"([\w!#$%&'*+\-.^_`|~]+)", r'"([^"]*)"'
 _param = re.compile(rf";\s*{_token}=(?:{_token}|{_quoted})", re.ASCII)
-_firefox_quote_escape = re.compile(r'\\"(?!; |\s*$)')
 _ipv6 = "(?:[0-9A-Fa-f]{0,4}:){2,7}[0-9A-Fa-f]{0,4}"
 _ipv6_re = re.compile(_ipv6)
 _host_re = re.compile(
@@ -33,143 +32,96 @@ _host_re = re.compile(
 # For more information, consult ../tests/test_requests.py
 
 
-def parse_arg_as_accept(f):
+class MediaType:
-    def func(self, other, *args, **kwargs):
+    """A media type, as used in the Accept header."""
-        if not isinstance(other, Accept) and other:
-            other = Accept.parse(other)
-        return f(self, other, *args, **kwargs)
-
-    return func
-
-
-class MediaType(str):
-    def __new__(cls, value: str):
-        return str.__new__(cls, value)
-
-    def __init__(self, value: str) -> None:
-        self.value = value
-        self.is_wildcard = self.check_if_wildcard(value)
-
-    def __eq__(self, other):
-        if self.is_wildcard:
-            return True
-
-        if self.match(other):
-            return True
-
-        other_is_wildcard = (
-            other.is_wildcard
-            if isinstance(other, MediaType)
-            else self.check_if_wildcard(other)
-        )
-
-        return other_is_wildcard
-
-    def match(self, other):
-        other_value = other.value if isinstance(other, MediaType) else other
-        return self.value == other_value
-
-    @staticmethod
-    def check_if_wildcard(value):
-        return value == "*"
-
-
-class Accept(str):
-    def __new__(cls, value: str, *args, **kwargs):
-        return str.__new__(cls, value)
 
     def __init__(
         self,
-        value: str,
+        type_: str,
-        type_: MediaType,
+        subtype: str,
-        subtype: MediaType,
+        **params: str,
-        *,
-        q: str = "1.0",
-        **kwargs: str,
     ):
-        qvalue = float(q)
+        self.type = type_
-        if qvalue > 1 or qvalue < 0:
-            raise InvalidHeader(
-                f"Accept header qvalue must be between 0 and 1, not: {qvalue}"
-            )
-        self.value = value
-        self.type_ = type_
         self.subtype = subtype
-        self.qvalue = qvalue
+        self.q = float(params.get("q", "1.0"))
-        self.params = kwargs
+        self.params = params
+        self.mime = f"{type_}/{subtype}"
+        self.key = (
+            -1 * self.q,
+            -1 * len(self.params),
+            self.subtype == "*",
+            self.type == "*",
+        )
 
-    def _compare(self, other, method):
+    def __repr__(self):
-        try:
+        return self.mime + "".join(f";{k}={v}" for k, v in self.params.items())
-            return method(self.qvalue, other.qvalue)
-        except (AttributeError, TypeError):
-            return NotImplemented
 
-    @parse_arg_as_accept
+    def __eq__(self, other):
-    def __lt__(self, other: Union[str, Accept]):
+        """Check for mime (str or MediaType) identical type/subtype.
-        return self._compare(other, lambda s, o: s < o)
+        Parameters such as q are not considered."""
+        if isinstance(other, str):
+            # Give a friendly reminder if str contains parameters
+            if ";" in other:
+                raise ValueError("Use match() to compare with parameters")
+            return self.mime == other
+        if isinstance(other, MediaType):
+            # Ignore parameters silently with MediaType objects
+            return self.mime == other.mime
+        return NotImplemented
 
-    @parse_arg_as_accept
-    def __le__(self, other: Union[str, Accept]):
-        return self._compare(other, lambda s, o: s <= o)
-
-    @parse_arg_as_accept
-    def __eq__(self, other: Union[str, Accept]):  # type: ignore
-        return self._compare(other, lambda s, o: s == o)
-
-    @parse_arg_as_accept
-    def __ge__(self, other: Union[str, Accept]):
-        return self._compare(other, lambda s, o: s >= o)
-
-    @parse_arg_as_accept
-    def __gt__(self, other: Union[str, Accept]):
-        return self._compare(other, lambda s, o: s > o)
-
-    @parse_arg_as_accept
-    def __ne__(self, other: Union[str, Accept]):  # type: ignore
-        return self._compare(other, lambda s, o: s != o)
-
-    @parse_arg_as_accept
     def match(
         self,
-        other,
+        mime_with_params: Union[str, MediaType],
-        *,
+    ) -> Optional[MediaType]:
-        allow_type_wildcard: bool = True,
+        """Check if this media type matches the given mime type/subtype.
-        allow_subtype_wildcard: bool = True,
+        Wildcards are supported both ways on both type and subtype.
-    ) -> bool:
+        If mime contains a semicolon, optionally followed by parameters,
-        type_match = (
+        the parameters of the two media types must match exactly.
-            self.type_ == other.type_
+        Note:  Use the `==` operator instead to check for literal matches
-            if allow_type_wildcard
+        without expanding wildcards.
-            else (
+        @param media_type: A type/subtype string to match.
-                self.type_.match(other.type_)
+        @return `self` if the media types are compatible, else `None`
-                and not self.type_.is_wildcard
+        """
-                and not other.type_.is_wildcard
+        mt = (
-            )
+            MediaType._parse(mime_with_params)
+            if isinstance(mime_with_params, str)
+            else mime_with_params
         )
-        subtype_match = (
+        return (
-            self.subtype == other.subtype
+            self
-            if allow_subtype_wildcard
+            if (
-            else (
+                mt
-                self.subtype.match(other.subtype)
+                # All parameters given in the other media type must match
-                and not self.subtype.is_wildcard
+                and all(self.params.get(k) == v for k, v in mt.params.items())
-                and not other.subtype.is_wildcard
+                # Subtype match
+                and (
+                    self.subtype == mt.subtype
+                    or self.subtype == "*"
+                    or mt.subtype == "*"
+                )
+                # Type match
+                and (
+                    self.type == mt.type or self.type == "*" or mt.type == "*"
+                )
             )
+            else None
         )
 
-        return type_match and subtype_match
+    @property
+    def has_wildcard(self) -> bool:
+        """Return True if this media type has a wildcard in it."""
+        return any(part == "*" for part in (self.subtype, self.type))
 
     @classmethod
-    def parse(cls, raw: str) -> Accept:
+    def _parse(cls, mime_with_params: str) -> Optional[MediaType]:
-        invalid = False
+        mtype = mime_with_params.strip()
-        mtype = raw.strip()
+        if "/" not in mime_with_params:
+            return None
 
-        try:
+        mime, *raw_params = mtype.split(";")
-            media, *raw_params = mtype.split(";")
+        type_, subtype = mime.split("/", 1)
-            type_, subtype = media.split("/")
+        if not type_ or not subtype:
-        except ValueError:
+            raise ValueError(f"Invalid media type: {mtype}")
-            invalid = True
-
-        if invalid or not type_ or not subtype:
-            raise InvalidHeader(f"Header contains invalid Accept value: {raw}")
 
         params = dict(
             [
@@ -178,46 +130,160 @@ class Accept(str):
             ]
         )
 
-        return cls(mtype, MediaType(type_), MediaType(subtype), **params)
+        return cls(type_.lstrip(), subtype.rstrip(), **params)
 
 
-class AcceptContainer(list):
+class Matched:
-    def __contains__(self, o: object) -> bool:
+    """A matching result of a MIME string against a header."""
-        return any(item.match(o) for item in self)
 
-    def match(
+    def __init__(self, mime: str, header: Optional[MediaType]):
-        self,
+        self.mime = mime
-        o: object,
+        self.header = header
-        *,
+
-        allow_type_wildcard: bool = True,
+    def __repr__(self):
-        allow_subtype_wildcard: bool = True,
+        return f"<{self} matched {self.header}>" if self else "<no match>"
-    ) -> bool:
+
-        return any(
+    def __str__(self):
-            item.match(
+        return self.mime
-                o,
+
-                allow_type_wildcard=allow_type_wildcard,
+    def __bool__(self):
-                allow_subtype_wildcard=allow_subtype_wildcard,
+        return self.header is not None
+
+    def __eq__(self, other: Any) -> bool:
+        try:
+            comp, other_accept = self._compare(other)
+        except TypeError:
+            return False
+
+        return bool(
+            comp
+            and (
+                (self.header and other_accept.header)
+                or (not self.header and not other_accept.header)
             )
-            for item in self
         )
 
+    def _compare(self, other) -> Tuple[bool, Matched]:
+        if isinstance(other, str):
+            parsed = Matched.parse(other)
+            if self.mime == other:
+                return True, parsed
+            other = parsed
+
+        if isinstance(other, Matched):
+            return self.header == other.header, other
+
+        raise TypeError(
+            "Comparison not supported between unequal "
+            f"mime types of '{self.mime}' and '{other}'"
+        )
+
+    def match(self, other: Union[str, Matched]) -> Optional[Matched]:
+        accept = Matched.parse(other) if isinstance(other, str) else other
+        if not self.header or not accept.header:
+            return None
+        if self.header.match(accept.header):
+            return accept
+        return None
+
+    @classmethod
+    def parse(cls, raw: str) -> Matched:
+        media_type = MediaType._parse(raw)
+        return cls(raw, media_type)
+
+
+class AcceptList(list):
+    """A list of media types, as used in the Accept header.
+
+    The Accept header entries are listed in order of preference, starting
+    with the most preferred. This class is a list of `MediaType` objects,
+    that encapsulate also the q value or any other parameters.
+
+    Two separate methods are provided for searching the list:
+    - 'match' for finding the most preferred match (wildcards supported)
+    -  operator 'in' for checking explicit matches (wildcards as literals)
+    """
+
+    def match(self, *mimes: str, accept_wildcards=True) -> Matched:
+        """Find a media type accepted by the client.
+
+        This method can be used to find which of the media types requested by
+        the client is most preferred against the ones given as arguments.
+
+        The ordering of preference is set by:
+        1. The order set by RFC 7231, s. 5.3.2, giving a higher priority
+            to q values and more specific type definitions,
+        2. The order of the arguments (first is most preferred), and
+        3. The first matching entry on the Accept header.
+
+        Wildcards are matched both ways. A match is usually found, as the
+        Accept headers typically include `*/*`, in particular if the header
+        is missing, is not manually set, or if the client is a browser.
+
+        Note: the returned object behaves as a string of the mime argument
+        that matched, and is empty/falsy if no match was found. The matched
+        header entry `MediaType` or `None` is available as the `m` attribute.
+
+        @param mimes: Any MIME types to search for in order of preference.
+        @param accept_wildcards: Match Accept entries with wildcards in them.
+        @return A match object with the mime string and the MediaType object.
+        """
+        a = sorted(
+            (-acc.q, i, j, mime, acc)
+            for j, acc in enumerate(self)
+            if accept_wildcards or not acc.has_wildcard
+            for i, mime in enumerate(mimes)
+            if acc.match(mime)
+        )
+        return Matched(*(a[0][-2:] if a else ("", None)))
+
+    def __str__(self):
+        """Format as Accept header value (parsed, not original)."""
+        return ", ".join(str(m) for m in self)
+
+
+def parse_accept(accept: Optional[str]) -> AcceptList:
+    """Parse an Accept header and order the acceptable media types in
+    according to RFC 7231, s. 5.3.2
+    https://datatracker.ietf.org/doc/html/rfc7231#section-5.3.2
+    """
+    if not accept:
+        if accept == "":
+            return AcceptList()  # Empty header, accept nothing
+        accept = "*/*"  # No header means that all types are accepted
+    try:
+        a = [
+            mt
+            for mt in [MediaType._parse(mtype) for mtype in accept.split(",")]
+            if mt
+        ]
+        if not a:
+            raise ValueError
+        return AcceptList(sorted(a, key=lambda x: x.key))
+    except ValueError:
+        raise InvalidHeader(f"Invalid header value in Accept: {accept}")
+
 
 def parse_content_header(value: str) -> Tuple[str, Options]:
     """Parse content-type and content-disposition header values.
 
-    E.g. 'form-data; name=upload; filename=\"file.txt\"' to
+    E.g. `form-data; name=upload; filename="file.txt"` to
     ('form-data', {'name': 'upload', 'filename': 'file.txt'})
 
     Mostly identical to cgi.parse_header and werkzeug.parse_options_header
-    but runs faster and handles special characters better. Unescapes quotes.
+    but runs faster and handles special characters better.
+
+    Unescapes %22 to `"` and %0D%0A to `\n` in field values.
     """
-    value = _firefox_quote_escape.sub("%22", value)
     pos = value.find(";")
     if pos == -1:
         options: Dict[str, Union[int, str]] = {}
     else:
         options = {
-            m.group(1).lower(): m.group(2) or m.group(3).replace("%22", '"')
+            m.group(1)
+            .lower(): (m.group(2) or m.group(3))
+            .replace("%22", '"')
+            .replace("%0D%0A", "\n")
             for m in _param.finditer(value[pos:])
         }
         value = value[:pos]
@@ -368,34 +434,6 @@ def format_http1_response(status: int, headers: HeaderBytesIterable) -> bytes:
     return ret
 
 
-def _sort_accept_value(accept: Accept):
-    return (
-        accept.qvalue,
-        len(accept.params),
-        accept.subtype != "*",
-        accept.type_ != "*",
-    )
-
-
-def parse_accept(accept: str) -> AcceptContainer:
-    """Parse an Accept header and order the acceptable media types in
-    accorsing to RFC 7231, s. 5.3.2
-    https://datatracker.ietf.org/doc/html/rfc7231#section-5.3.2
-    """
-    media_types = accept.split(",")
-    accept_list: List[Accept] = []
-
-    for mtype in media_types:
-        if not mtype:
-            continue
-
-        accept_list.append(Accept.parse(mtype))
-
-    return AcceptContainer(
-        sorted(accept_list, key=_sort_accept_value, reverse=True)
-    )
-
-
 def parse_credentials(
     header: Optional[str],
     prefixes: Union[List, Tuple, Set] = None,

sanic/http/http1.py

@@ -14,6 +14,7 @@ from sanic.exceptions import (
     BadRequest,
     ExpectationFailed,
     PayloadTooLarge,
+    RequestCancelled,
     ServerError,
     ServiceUnavailable,
 )
@@ -70,7 +71,6 @@ class Http(Stream, metaclass=TouchUpMeta):
         "request_body",
         "request_bytes",
         "request_bytes_left",
-        "request_max_size",
         "response",
         "response_func",
         "response_size",
@@ -132,7 +132,7 @@ class Http(Stream, metaclass=TouchUpMeta):
 
                 if self.stage is Stage.RESPONSE:
                     await self.response.send(end_stream=True)
-            except CancelledError:
+            except CancelledError as exc:
                 # Write an appropriate response before exiting
                 if not self.protocol.transport:
                     logger.info(
@@ -140,7 +140,11 @@ class Http(Stream, metaclass=TouchUpMeta):
                         "stopped. Transport is closed."
                     )
                     return
-                e = self.exception or ServiceUnavailable("Cancelled")
+                e = (
+                    RequestCancelled()
+                    if self.protocol.conn_info.lost
+                    else (self.exception or exc)
+                )
                 self.exception = None
                 self.keep_alive = False
                 await self.error_response(e)
@@ -236,9 +240,14 @@ class Http(Stream, metaclass=TouchUpMeta):
             headers_instance.getone("upgrade", "").lower() == "websocket"
         )
 
+        try:
+            url_bytes = self.url.encode("ASCII")
+        except UnicodeEncodeError:
+            raise BadRequest("URL may only contain US-ASCII characters.")
+
         # Prepare a Request object
         request = self.protocol.request_class(
-            url_bytes=self.url.encode(),
+            url_bytes=url_bytes,
             headers=headers_instance,
             head=bytes(head),
             version=protocol[5:],
@@ -424,7 +433,15 @@ class Http(Stream, metaclass=TouchUpMeta):
             if self.request is None:
                 self.create_empty_request()
 
-            await app.handle_exception(self.request, exception)
+            request_middleware = not isinstance(
+                exception, (ServiceUnavailable, RequestCancelled)
+            )
+            try:
+                await app.handle_exception(
+                    self.request, exception, request_middleware
+                )
+            except Exception as e:
+                await app.handle_exception(self.request, e, False)
 
     def create_empty_request(self) -> None:
         """
@@ -433,9 +450,18 @@ class Http(Stream, metaclass=TouchUpMeta):
         bogus response for error handling use.
         """
 
+        # Reformat any URL already received with \xHH escapes for better logs
+        url_bytes = (
+            self.url.encode(errors="surrogateescape")
+            .decode("ASCII", errors="backslashreplace")
+            .encode("ASCII")
+            if self.url
+            else b"*"
+        )
+
         # FIXME: Avoid this by refactoring error handling and response code
         self.request = self.protocol.request_class(
-            url_bytes=self.url.encode() if self.url else b"*",
+            url_bytes=url_bytes,
             headers=Header({}),
             version="1.1",
             method="NONE",

sanic/http/http3.py

@@ -18,11 +18,16 @@ from typing import (
 
 from sanic.compat import Header
 from sanic.constants import LocalCertCreator
-from sanic.exceptions import PayloadTooLarge, SanicException, ServerError
+from sanic.exceptions import (
+    BadRequest,
+    PayloadTooLarge,
+    SanicException,
+    ServerError,
+)
 from sanic.helpers import has_message_body
 from sanic.http.constants import Stage
 from sanic.http.stream import Stream
-from sanic.http.tls.context import CertSelector, CertSimple, SanicSSLContext
+from sanic.http.tls.context import CertSelector, SanicSSLContext
 from sanic.log import Colors, logger
 from sanic.models.protocol_types import TransportProtocol
 from sanic.models.server_types import ConnInfo
@@ -333,7 +338,17 @@ class Http3:
         return self.receivers[stream_id]
 
     def _make_request(self, event: HeadersReceived) -> Request:
-        headers = Header(((k.decode(), v.decode()) for k, v in event.headers))
+        try:
+            headers = Header(
+                (
+                    (k.decode("ASCII"), v.decode(errors="surrogateescape"))
+                    for k, v in event.headers
+                )
+            )
+        except UnicodeDecodeError:
+            raise BadRequest(
+                "Header names may only contain US-ASCII characters."
+            )
         method = headers[":method"]
         path = headers[":path"]
         scheme = headers.pop(":scheme", "")
@@ -342,9 +357,14 @@ class Http3:
         if authority:
             headers["host"] = authority
 
+        try:
+            url_bytes = path.encode("ASCII")
+        except UnicodeEncodeError:
+            raise BadRequest("URL may only contain US-ASCII characters.")
+
         transport = HTTP3Transport(self.protocol)
         request = self.protocol.request_class(
-            path.encode(),
+            url_bytes,
             headers,
             "3",
             method,
@@ -378,7 +398,7 @@ def get_config(
     app: Sanic, ssl: Union[SanicSSLContext, CertSelector, SSLContext]
 ):
     # TODO:
-    # - proper selection needed if servince with multiple certs insted of
+    # - proper selection needed if service with multiple certs insted of
     #   just taking the first
     if isinstance(ssl, CertSelector):
         ssl = cast(SanicSSLContext, ssl.sanic_select[0])
@@ -389,8 +409,8 @@ def get_config(
             "should be able to use mkcert instead. For more information, see: "
             "https://github.com/aiortc/aioquic/issues/295."
         )
-    if not isinstance(ssl, CertSimple):
+    if not isinstance(ssl, SanicSSLContext):
-        raise SanicException("SSLContext is not CertSimple")
+        raise SanicException("SSLContext is not SanicSSLContext")
 
     config = QuicConfiguration(
         alpn_protocols=H3_ALPN + H0_ALPN + ["siduck"],

sanic/http/stream.py

@@ -19,7 +19,7 @@ class Stream:
     request_max_size: Union[int, float]
 
     __touchup__: Tuple[str, ...] = tuple()
-    __slots__ = ()
+    __slots__ = ("request_max_size",)
 
     def respond(
         self, response: BaseHTTPResponse

sanic/http/tls/context.py

@@ -24,13 +24,15 @@ def create_context(
     certfile: Optional[str] = None,
     keyfile: Optional[str] = None,
     password: Optional[str] = None,
+    purpose: ssl.Purpose = ssl.Purpose.CLIENT_AUTH,
 ) -> ssl.SSLContext:
     """Create a context with secure crypto and HTTP/1.1 in protocols."""
-    context = ssl.create_default_context(purpose=ssl.Purpose.CLIENT_AUTH)
+    context = ssl.create_default_context(purpose=purpose)
     context.minimum_version = ssl.TLSVersion.TLSv1_2
     context.set_ciphers(":".join(CIPHERS_TLS12))
     context.set_alpn_protocols(["http/1.1"])
-    context.sni_callback = server_name_callback
+    if purpose is ssl.Purpose.CLIENT_AUTH:
+        context.sni_callback = server_name_callback
     if certfile and keyfile:
         context.load_cert_chain(certfile, keyfile, password)
     return context
@@ -157,7 +159,7 @@ class CertSimple(SanicSSLContext):
         # try common aliases, rename to cert/key
         certfile = kw["cert"] = kw.pop("certificate", None) or cert
         keyfile = kw["key"] = kw.pop("keyfile", None) or key
-        password = kw.pop("password", None)
+        password = kw.get("password", None)
         if not certfile or not keyfile:
             raise ValueError("SSL dict needs filenames for cert and key.")
         subject = {}

sanic/http/tls/creators.py

@@ -72,7 +72,8 @@ def get_ssl_context(
             "without passing a TLS certificate. If you are developing "
             "locally, please enable DEVELOPMENT mode and Sanic will "
             "generate a localhost TLS certificate. For more information "
-            "please see: ___."
+            "please see: https://sanic.dev/en/guide/deployment/development."
+            "html#automatic-tls-certificate."
         )
 
     creator = CertCreator.select(
@@ -125,7 +126,6 @@ class CertCreator(ABC):
         local_tls_key,
         local_tls_cert,
     ) -> CertCreator:
-
         creator: Optional[CertCreator] = None
 
         cert_creator_options: Tuple[
@@ -151,7 +151,8 @@ class CertCreator(ABC):
             raise SanicException(
                 "Sanic could not find package to create a TLS certificate. "
                 "You must have either mkcert or trustme installed. See "
-                "_____ for more details."
+                "https://sanic.dev/en/guide/deployment/development.html"
+                "#automatic-tls-certificate for more details."
             )
 
         return creator
@@ -203,7 +204,8 @@ class MkcertCreator(CertCreator):
                 "to proceed. Installation instructions can be found here: "
                 "https://github.com/FiloSottile/mkcert.\n"
                 "Find out more information about your options here: "
-                "_____"
+                "https://sanic.dev/en/guide/deployment/development.html#"
+                "automatic-tls-certificate"
             ) from e
 
     def generate_cert(self, localhost: str) -> ssl.SSLContext:
@@ -240,7 +242,12 @@ class MkcertCreator(CertCreator):
                         self.cert_path.unlink()
                     self.tmpdir.rmdir()
 
-        return CertSimple(self.cert_path, self.key_path)
+        context = CertSimple(self.cert_path, self.key_path)
+        context.sanic["creator"] = "mkcert"
+        context.sanic["localhost"] = localhost
+        SanicSSLContext.create_from_ssl_context(context)
+
+        return context
 
 
 class TrustmeCreator(CertCreator):
@@ -255,24 +262,28 @@ class TrustmeCreator(CertCreator):
                 "to proceed. Installation instructions can be found here: "
                 "https://github.com/python-trio/trustme.\n"
                 "Find out more information about your options here: "
-                "_____"
+                "https://sanic.dev/en/guide/deployment/development.html#"
+                "automatic-tls-certificate"
             )
 
     def generate_cert(self, localhost: str) -> ssl.SSLContext:
-        context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+        context = SanicSSLContext.create_from_ssl_context(
-        sanic_context = SanicSSLContext.create_from_ssl_context(context)
+            ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
-        sanic_context.sanic = {
+        )
+        context.sanic = {
             "cert": self.cert_path.absolute(),
             "key": self.key_path.absolute(),
         }
         ca = trustme.CA()
         server_cert = ca.issue_cert(localhost)
-        server_cert.configure_cert(sanic_context)
+        server_cert.configure_cert(context)
         ca.configure_trust(context)
 
         ca.cert_pem.write_to_path(str(self.cert_path.absolute()))
         server_cert.private_key_and_cert_chain_pem.write_to_path(
             str(self.key_path.absolute())
         )
+        context.sanic["creator"] = "trustme"
+        context.sanic["localhost"] = localhost
 
         return context

sanic/log.py

@@ -2,12 +2,23 @@ import logging
 import sys
 
 from enum import Enum
-from typing import Any, Dict
+from typing import TYPE_CHECKING, Any, Dict
 from warnings import warn
 
 from sanic.compat import is_atty
 
 
+# Python 3.11 changed the way Enum formatting works for mixed-in types.
+if sys.version_info < (3, 11, 0):
+
+    class StrEnum(str, Enum):
+        pass
+
+else:
+    if not TYPE_CHECKING:
+        from enum import StrEnum
+
+
 LOGGING_CONFIG_DEFAULTS: Dict[str, Any] = dict(  # no cov
     version=1,
     disable_existing_loggers=False,
@@ -25,6 +36,12 @@ LOGGING_CONFIG_DEFAULTS: Dict[str, Any] = dict(  # no cov
             "propagate": True,
             "qualname": "sanic.access",
         },
+        "sanic.server": {
+            "level": "INFO",
+            "handlers": ["console"],
+            "propagate": True,
+            "qualname": "sanic.server",
+        },
     },
     handlers={
         "console": {
@@ -45,13 +62,13 @@ LOGGING_CONFIG_DEFAULTS: Dict[str, Any] = dict(  # no cov
     },
     formatters={
         "generic": {
-            "format": "%(asctime)s [%(process)d] [%(levelname)s] %(message)s",
+            "format": "%(asctime)s [%(process)s] [%(levelname)s] %(message)s",
             "datefmt": "[%Y-%m-%d %H:%M:%S %z]",
             "class": "logging.Formatter",
         },
         "access": {
             "format": "%(asctime)s - (%(name)s)[%(levelname)s][%(host)s]: "
-            + "%(request)s %(message)s %(status)d %(byte)d",
+            + "%(request)s %(message)s %(status)s %(byte)s",
             "datefmt": "[%Y-%m-%d %H:%M:%S %z]",
             "class": "logging.Formatter",
         },
@@ -62,12 +79,13 @@ Defult logging configuration
 """
 
 
-class Colors(str, Enum):  # no cov
+class Colors(StrEnum):  # no cov
     END = "\033[0m"
-    BLUE = "\033[01;34m"
+    BOLD = "\033[1m"
-    GREEN = "\033[01;32m"
+    BLUE = "\033[34m"
-    PURPLE = "\033[01;35m"
+    GREEN = "\033[32m"
-    RED = "\033[01;31m"
+    PURPLE = "\033[35m"
+    RED = "\033[31m"
     SANIC = "\033[38;2;255;13;104m"
     YELLOW = "\033[01;33m"
 
@@ -100,9 +118,34 @@ Logger used by Sanic for access logging
 """
 access_logger.addFilter(_verbosity_filter)
 
+server_logger = logging.getLogger("sanic.server")  # no cov
+"""
+Logger used by Sanic for server related messages
+"""
+logger.addFilter(_verbosity_filter)
+
 
 def deprecation(message: str, version: float):  # no cov
-    version_info = f"[DEPRECATION v{version}] "
+    """
+    Add a deprecation notice
+
+    Example when a feature is being removed. In this case, version
+    should be AT LEAST next version + 2
+
+        deprecation("Helpful message", 99.9)
+
+    Example when a feature is deprecated but not being removed:
+
+        deprecation("Helpful message", 0)
+
+    :param message: The message of the notice
+    :type message: str
+    :param version: The version when the feature will be removed. If it is
+      not being removed, then set version=0.
+    :type version: float
+    """
+    version_display = f" v{version}" if version else ""
+    version_info = f"[DEPRECATION{version_display}] "
     if is_atty():
         version_info = f"{Colors.RED}{version_info}"
         message = f"{Colors.YELLOW}{message}{Colors.END}"

sanic/middleware.py

@@ -0,0 +1,69 @@
+from __future__ import annotations
+
+from collections import deque
+from enum import IntEnum, auto
+from itertools import count
+from typing import Deque, Sequence, Union
+
+from sanic.models.handler_types import MiddlewareType
+
+
+class MiddlewareLocation(IntEnum):
+    REQUEST = auto()
+    RESPONSE = auto()
+
+
+class Middleware:
+    _counter = count()
+
+    __slots__ = ("func", "priority", "location", "definition")
+
+    def __init__(
+        self,
+        func: MiddlewareType,
+        location: MiddlewareLocation,
+        priority: int = 0,
+    ) -> None:
+        self.func = func
+        self.priority = priority
+        self.location = location
+        self.definition = next(Middleware._counter)
+
+    def __call__(self, *args, **kwargs):
+        return self.func(*args, **kwargs)
+
+    def __hash__(self) -> int:
+        return hash(self.func)
+
+    def __repr__(self) -> str:
+        return (
+            f"{self.__class__.__name__}("
+            f"func=<function {self.func.__name__}>, "
+            f"priority={self.priority}, "
+            f"location={self.location.name})"
+        )
+
+    @property
+    def order(self):
+        return (self.priority, -self.definition)
+
+    @classmethod
+    def convert(
+        cls,
+        *middleware_collections: Sequence[Union[Middleware, MiddlewareType]],
+        location: MiddlewareLocation,
+    ) -> Deque[Middleware]:
+        return deque(
+            [
+                middleware
+                if isinstance(middleware, Middleware)
+                else Middleware(middleware, location)
+                for collection in middleware_collections
+                for middleware in collection
+            ]
+        )
+
+    @classmethod
+    def reset_count(cls):
+        cls._counter = count()
+        cls.count = next(cls._counter)

sanic/mixins/base.py

@@ -0,0 +1,35 @@
+from typing import Optional
+
+from sanic.base.meta import SanicMeta
+
+
+class BaseMixin(metaclass=SanicMeta):
+    name: str
+    strict_slashes: Optional[bool]
+
+    def _generate_name(self, *objects) -> str:
+        name = None
+
+        for obj in objects:
+            if obj:
+                if isinstance(obj, str):
+                    name = obj
+                    break
+
+                try:
+                    name = obj.name
+                except AttributeError:
+                    try:
+                        name = obj.__name__
+                    except AttributeError:
+                        continue
+                else:
+                    break
+
+        if not name:  # noqa
+            raise ValueError("Could not generate a name for handler")
+
+        if not name.startswith(f"{self.name}."):
+            name = f"{self.name}.{name}"
+
+        return name

sanic/mixins/listeners.py

@@ -17,9 +17,12 @@ class ListenerEvent(str, Enum):
     BEFORE_SERVER_STOP = "server.shutdown.before"
     AFTER_SERVER_STOP = "server.shutdown.after"
     MAIN_PROCESS_START = auto()
+    MAIN_PROCESS_READY = auto()
     MAIN_PROCESS_STOP = auto()
     RELOAD_PROCESS_START = auto()
     RELOAD_PROCESS_STOP = auto()
+    BEFORE_RELOAD_TRIGGER = auto()
+    AFTER_RELOAD_TRIGGER = auto()
 
 
 class ListenerMixin(metaclass=SanicMeta):
@@ -98,6 +101,11 @@ class ListenerMixin(metaclass=SanicMeta):
     ) -> ListenerType[Sanic]:
         return self.listener(listener, "main_process_start")
 
+    def main_process_ready(
+        self, listener: ListenerType[Sanic]
+    ) -> ListenerType[Sanic]:
+        return self.listener(listener, "main_process_ready")
+
     def main_process_stop(
         self, listener: ListenerType[Sanic]
     ) -> ListenerType[Sanic]:
@@ -113,6 +121,16 @@ class ListenerMixin(metaclass=SanicMeta):
     ) -> ListenerType[Sanic]:
         return self.listener(listener, "reload_process_stop")
 
+    def before_reload_trigger(
+        self, listener: ListenerType[Sanic]
+    ) -> ListenerType[Sanic]:
+        return self.listener(listener, "before_reload_trigger")
+
+    def after_reload_trigger(
+        self, listener: ListenerType[Sanic]
+    ) -> ListenerType[Sanic]:
+        return self.listener(listener, "after_reload_trigger")
+
     def before_server_start(
         self, listener: ListenerType[Sanic]
     ) -> ListenerType[Sanic]:

sanic/mixins/middleware.py

@@ -1,11 +1,17 @@
+from collections import deque
 from functools import partial
+from operator import attrgetter
 from typing import List
 
 from sanic.base.meta import SanicMeta
+from sanic.middleware import Middleware, MiddlewareLocation
 from sanic.models.futures import FutureMiddleware
+from sanic.router import Router
 
 
 class MiddlewareMixin(metaclass=SanicMeta):
+    router: Router
+
     def __init__(self, *args, **kwargs) -> None:
         self._future_middleware: List[FutureMiddleware] = []
 
@@ -13,7 +19,12 @@ class MiddlewareMixin(metaclass=SanicMeta):
         raise NotImplementedError  # noqa
 
     def middleware(
-        self, middleware_or_request, attach_to="request", apply=True
+        self,
+        middleware_or_request,
+        attach_to="request",
+        apply=True,
+        *,
+        priority=0
     ):
         """
         Decorate and register middleware to be called before a request
@@ -30,6 +41,12 @@ class MiddlewareMixin(metaclass=SanicMeta):
         def register_middleware(middleware, attach_to="request"):
             nonlocal apply
 
+            location = (
+                MiddlewareLocation.REQUEST
+                if attach_to == "request"
+                else MiddlewareLocation.RESPONSE
+            )
+            middleware = Middleware(middleware, location, priority=priority)
             future_middleware = FutureMiddleware(middleware, attach_to)
             self._future_middleware.append(future_middleware)
             if apply:
@@ -46,7 +63,7 @@ class MiddlewareMixin(metaclass=SanicMeta):
                 register_middleware, attach_to=middleware_or_request
             )
 
-    def on_request(self, middleware=None):
+    def on_request(self, middleware=None, *, priority=0):
         """Register a middleware to be called before a request is handled.
 
         This is the same as *@app.middleware('request')*.
@@ -54,11 +71,13 @@ class MiddlewareMixin(metaclass=SanicMeta):
         :param: middleware: A callable that takes in request.
         """
         if callable(middleware):
-            return self.middleware(middleware, "request")
+            return self.middleware(middleware, "request", priority=priority)
         else:
-            return partial(self.middleware, attach_to="request")
+            return partial(
+                self.middleware, attach_to="request", priority=priority
+            )
 
-    def on_response(self, middleware=None):
+    def on_response(self, middleware=None, *, priority=0):
         """Register a middleware to be called after a response is created.
 
         This is the same as *@app.middleware('response')*.
@@ -67,6 +86,57 @@ class MiddlewareMixin(metaclass=SanicMeta):
             A callable that takes in a request and its response.
         """
         if callable(middleware):
-            return self.middleware(middleware, "response")
+            return self.middleware(middleware, "response", priority=priority)
         else:
-            return partial(self.middleware, attach_to="response")
+            return partial(
+                self.middleware, attach_to="response", priority=priority
+            )
+
+    def finalize_middleware(self):
+        for route in self.router.routes:
+            request_middleware = Middleware.convert(
+                self.request_middleware,
+                self.named_request_middleware.get(route.name, deque()),
+                location=MiddlewareLocation.REQUEST,
+            )
+            response_middleware = Middleware.convert(
+                self.response_middleware,
+                self.named_response_middleware.get(route.name, deque()),
+                location=MiddlewareLocation.RESPONSE,
+            )
+            route.extra.request_middleware = deque(
+                sorted(
+                    request_middleware,
+                    key=attrgetter("order"),
+                    reverse=True,
+                )
+            )
+            route.extra.response_middleware = deque(
+                sorted(
+                    response_middleware,
+                    key=attrgetter("order"),
+                    reverse=True,
+                )[::-1]
+            )
+        request_middleware = Middleware.convert(
+            self.request_middleware,
+            location=MiddlewareLocation.REQUEST,
+        )
+        response_middleware = Middleware.convert(
+            self.response_middleware,
+            location=MiddlewareLocation.RESPONSE,
+        )
+        self.request_middleware = deque(
+            sorted(
+                request_middleware,
+                key=attrgetter("order"),
+                reverse=True,
+            )
+        )
+        self.response_middleware = deque(
+            sorted(
+                response_middleware,
+                key=attrgetter("order"),
+                reverse=True,
+            )[::-1]
+        )

sanic/mixins/routes.py

@@ -1,15 +1,11 @@
 from ast import NodeVisitor, Return, parse
 from contextlib import suppress
-from functools import partial, wraps
 from inspect import getsource, signature
-from mimetypes import guess_type
-from os import path
-from pathlib import Path, PurePath
 from textwrap import dedent
-from time import gmtime, strftime
 from typing import (
     Any,
     Callable,
+    Dict,
     Iterable,
     List,
     Optional,
@@ -18,50 +14,31 @@ from typing import (
     Union,
     cast,
 )
-from urllib.parse import unquote
 
 from sanic_routing.route import Route
 
 from sanic.base.meta import SanicMeta
-from sanic.compat import stat_async
+from sanic.constants import HTTP_METHODS
-from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE, HTTP_METHODS
 from sanic.errorpages import RESPONSE_MAPPING
-from sanic.exceptions import FileNotFound, HeaderNotFound, RangeNotSatisfiable
+from sanic.mixins.base import BaseMixin
-from sanic.handlers import ContentRangeHandler
-from sanic.log import error_logger
 from sanic.models.futures import FutureRoute, FutureStatic
 from sanic.models.handler_types import RouteHandler
-from sanic.response import HTTPResponse, file, file_stream
 from sanic.types import HashableDict
 
 
 RouteWrapper = Callable[
     [RouteHandler], Union[RouteHandler, Tuple[Route, RouteHandler]]
 ]
-RESTRICTED_ROUTE_CONTEXT = (
-    "ignore_body",
-    "stream",
-    "hosts",
-    "static",
-    "error_format",
-    "websocket",
-)
 
 
-class RouteMixin(metaclass=SanicMeta):
+class RouteMixin(BaseMixin, metaclass=SanicMeta):
-    name: str
-
     def __init__(self, *args, **kwargs) -> None:
         self._future_routes: Set[FutureRoute] = set()
         self._future_statics: Set[FutureStatic] = set()
-        self.strict_slashes: Optional[bool] = False
 
     def _apply_route(self, route: FutureRoute) -> List[Route]:
         raise NotImplementedError  # noqa
 
-    def _apply_static(self, static: FutureStatic) -> Route:
-        raise NotImplementedError  # noqa
-
     def route(
         self,
         uri: str,
@@ -225,7 +202,8 @@ class RouteMixin(metaclass=SanicMeta):
         stream: bool = False,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        unquote: bool = False,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """A helper method to register class instance or
         functions as a handler to the application url
@@ -271,6 +249,7 @@ class RouteMixin(metaclass=SanicMeta):
             name=name,
             version_prefix=version_prefix,
             error_format=error_format,
+            unquote=unquote,
             **ctx_kwargs,
         )(handler)
         return handler
@@ -286,7 +265,7 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **GET** *HTTP* method
@@ -329,7 +308,7 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **POST** *HTTP* method
@@ -372,7 +351,7 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **PUT** *HTTP* method
@@ -415,7 +394,7 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **HEAD** *HTTP* method
@@ -466,7 +445,7 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **OPTIONS** *HTTP* method
@@ -517,7 +496,7 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **PATCH** *HTTP* method
@@ -567,10 +546,10 @@ class RouteMixin(metaclass=SanicMeta):
         strict_slashes: Optional[bool] = None,
         version: Optional[Union[int, str, float]] = None,
         name: Optional[str] = None,
-        ignore_body: bool = True,
+        ignore_body: bool = False,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """
         Add an API URL under the **DELETE** *HTTP* method
@@ -614,7 +593,7 @@ class RouteMixin(metaclass=SanicMeta):
         apply: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ):
         """
         Decorate a function to be registered as a websocket route
@@ -658,7 +637,7 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ):
         """
         A helper method to register a function as a websocket route.
@@ -693,317 +672,6 @@ class RouteMixin(metaclass=SanicMeta):
             **ctx_kwargs,
         )(handler)
 
-    def static(
-        self,
-        uri,
-        file_or_directory: Union[str, bytes, PurePath],
-        pattern=r"/?.+",
-        use_modified_since=True,
-        use_content_range=False,
-        stream_large_files=False,
-        name="static",
-        host=None,
-        strict_slashes=None,
-        content_type=None,
-        apply=True,
-        resource_type=None,
-    ):
-        """
-        Register a root to serve files from. The input can either be a
-        file or a directory. This method will enable an easy and simple way
-        to setup the :class:`Route` necessary to serve the static files.
-
-        :param uri: URL path to be used for serving static content
-        :param file_or_directory: Path for the Static file/directory with
-            static files
-        :param pattern: Regex Pattern identifying the valid static files
-        :param use_modified_since: If true, send file modified time, and return
-            not modified if the browser's matches the server's
-        :param use_content_range: If true, process header for range requests
-            and sends the file part that is requested
-        :param stream_large_files: If true, use the
-            :func:`StreamingHTTPResponse.file_stream` handler rather
-            than the :func:`HTTPResponse.file` handler to send the file.
-            If this is an integer, this represents the threshold size to
-            switch to :func:`StreamingHTTPResponse.file_stream`
-        :param name: user defined name used for url_for
-        :param host: Host IP or FQDN for the service to use
-        :param strict_slashes: Instruct :class:`Sanic` to check if the request
-            URLs need to terminate with a */*
-        :param content_type: user defined content type for header
-        :return: routes registered on the router
-        :rtype: List[sanic.router.Route]
-        """
-
-        name = self._generate_name(name)
-
-        if strict_slashes is None and self.strict_slashes is not None:
-            strict_slashes = self.strict_slashes
-
-        if not isinstance(file_or_directory, (str, bytes, PurePath)):
-            raise ValueError(
-                f"Static route must be a valid path, not {file_or_directory}"
-            )
-
-        static = FutureStatic(
-            uri,
-            file_or_directory,
-            pattern,
-            use_modified_since,
-            use_content_range,
-            stream_large_files,
-            name,
-            host,
-            strict_slashes,
-            content_type,
-            resource_type,
-        )
-        self._future_statics.add(static)
-
-        if apply:
-            self._apply_static(static)
-
-    def _generate_name(self, *objects) -> str:
-        name = None
-
-        for obj in objects:
-            if obj:
-                if isinstance(obj, str):
-                    name = obj
-                    break
-
-                try:
-                    name = obj.name
-                except AttributeError:
-                    try:
-                        name = obj.__name__
-                    except AttributeError:
-                        continue
-                else:
-                    break
-
-        if not name:  # noqa
-            raise ValueError("Could not generate a name for handler")
-
-        if not name.startswith(f"{self.name}."):
-            name = f"{self.name}.{name}"
-
-        return name
-
-    async def _static_request_handler(
-        self,
-        file_or_directory,
-        use_modified_since,
-        use_content_range,
-        stream_large_files,
-        request,
-        content_type=None,
-        __file_uri__=None,
-    ):
-        # Merge served directory and requested file if provided
-        file_path_raw = Path(unquote(file_or_directory))
-        root_path = file_path = file_path_raw.resolve()
-        not_found = FileNotFound(
-            "File not found",
-            path=file_or_directory,
-            relative_url=__file_uri__,
-        )
-
-        if __file_uri__:
-            # Strip all / that in the beginning of the URL to help prevent
-            # python from herping a derp and treating the uri as an
-            # absolute path
-            unquoted_file_uri = unquote(__file_uri__).lstrip("/")
-            file_path_raw = Path(file_or_directory, unquoted_file_uri)
-            file_path = file_path_raw.resolve()
-            if (
-                file_path < root_path and not file_path_raw.is_symlink()
-            ) or ".." in file_path_raw.parts:
-                error_logger.exception(
-                    f"File not found: path={file_or_directory}, "
-                    f"relative_url={__file_uri__}"
-                )
-                raise not_found
-
-        try:
-            file_path.relative_to(root_path)
-        except ValueError:
-            if not file_path_raw.is_symlink():
-                error_logger.exception(
-                    f"File not found: path={file_or_directory}, "
-                    f"relative_url={__file_uri__}"
-                )
-                raise not_found
-        try:
-            headers = {}
-            # Check if the client has been sent this file before
-            # and it has not been modified since
-            stats = None
-            if use_modified_since:
-                stats = await stat_async(file_path)
-                modified_since = strftime(
-                    "%a, %d %b %Y %H:%M:%S GMT", gmtime(stats.st_mtime)
-                )
-                if (
-                    request.headers.getone("if-modified-since", None)
-                    == modified_since
-                ):
-                    return HTTPResponse(status=304)
-                headers["Last-Modified"] = modified_since
-            _range = None
-            if use_content_range:
-                _range = None
-                if not stats:
-                    stats = await stat_async(file_path)
-                headers["Accept-Ranges"] = "bytes"
-                headers["Content-Length"] = str(stats.st_size)
-                if request.method != "HEAD":
-                    try:
-                        _range = ContentRangeHandler(request, stats)
-                    except HeaderNotFound:
-                        pass
-                    else:
-                        del headers["Content-Length"]
-                        for key, value in _range.headers.items():
-                            headers[key] = value
-
-            if "content-type" not in headers:
-                content_type = (
-                    content_type
-                    or guess_type(file_path)[0]
-                    or DEFAULT_HTTP_CONTENT_TYPE
-                )
-
-                if "charset=" not in content_type and (
-                    content_type.startswith("text/")
-                    or content_type == "application/javascript"
-                ):
-                    content_type += "; charset=utf-8"
-
-                headers["Content-Type"] = content_type
-
-            if request.method == "HEAD":
-                return HTTPResponse(headers=headers)
-            else:
-                if stream_large_files:
-                    if type(stream_large_files) == int:
-                        threshold = stream_large_files
-                    else:
-                        threshold = 1024 * 1024
-
-                    if not stats:
-                        stats = await stat_async(file_path)
-                    if stats.st_size >= threshold:
-                        return await file_stream(
-                            file_path, headers=headers, _range=_range
-                        )
-                return await file(file_path, headers=headers, _range=_range)
-        except RangeNotSatisfiable:
-            raise
-        except FileNotFoundError:
-            raise not_found
-        except Exception:
-            error_logger.exception(
-                f"Exception in static request handler: "
-                f"path={file_or_directory}, "
-                f"relative_url={__file_uri__}"
-            )
-            raise
-
-    def _register_static(
-        self,
-        static: FutureStatic,
-    ):
-        # TODO: Though sanic is not a file server, I feel like we should
-        # at least make a good effort here.  Modified-since is nice, but
-        # we could also look into etags, expires, and caching
-        """
-        Register a static directory handler with Sanic by adding a route to the
-        router and registering a handler.
-
-        :param app: Sanic
-        :param file_or_directory: File or directory path to serve from
-        :type file_or_directory: Union[str,bytes,Path]
-        :param uri: URL to serve from
-        :type uri: str
-        :param pattern: regular expression used to match files in the URL
-        :param use_modified_since: If true, send file modified time, and return
-                                not modified if the browser's matches the
-                                server's
-        :param use_content_range: If true, process header for range requests
-                                and sends the file part that is requested
-        :param stream_large_files: If true, use the file_stream() handler
-                                rather than the file() handler to send the file
-                                If this is an integer, this represents the
-                                threshold size to switch to file_stream()
-        :param name: user defined name used for url_for
-        :type name: str
-        :param content_type: user defined content type for header
-        :return: registered static routes
-        :rtype: List[sanic.router.Route]
-        """
-
-        if isinstance(static.file_or_directory, bytes):
-            file_or_directory = static.file_or_directory.decode("utf-8")
-        elif isinstance(static.file_or_directory, PurePath):
-            file_or_directory = str(static.file_or_directory)
-        elif not isinstance(static.file_or_directory, str):
-            raise ValueError("Invalid file path string.")
-        else:
-            file_or_directory = static.file_or_directory
-
-        uri = static.uri
-        name = static.name
-        # If we're not trying to match a file directly,
-        # serve from the folder
-        if not static.resource_type:
-            if not path.isfile(file_or_directory):
-                uri += "/<__file_uri__:path>"
-        elif static.resource_type == "dir":
-            if path.isfile(file_or_directory):
-                raise TypeError(
-                    "Resource type improperly identified as directory. "
-                    f"'{file_or_directory}'"
-                )
-            uri += "/<__file_uri__:path>"
-        elif static.resource_type == "file" and not path.isfile(
-            file_or_directory
-        ):
-            raise TypeError(
-                "Resource type improperly identified as file. "
-                f"'{file_or_directory}'"
-            )
-        elif static.resource_type != "file":
-            raise ValueError(
-                "The resource_type should be set to 'file' or 'dir'"
-            )
-
-        # special prefix for static files
-        # if not static.name.startswith("_static_"):
-        #     name = f"_static_{static.name}"
-
-        _handler = wraps(self._static_request_handler)(
-            partial(
-                self._static_request_handler,
-                file_or_directory,
-                static.use_modified_since,
-                static.use_content_range,
-                static.stream_large_files,
-                content_type=static.content_type,
-            )
-        )
-
-        route, _ = self.route(  # type: ignore
-            uri=uri,
-            methods=["GET", "HEAD"],
-            name=name,
-            host=static.host,
-            strict_slashes=static.strict_slashes,
-            static=True,
-        )(_handler)
-
-        return route
-
     def _determine_error_format(self, handler) -> str:
         with suppress(OSError, TypeError):
             src = dedent(getsource(handler))
@@ -1039,24 +707,12 @@ class RouteMixin(metaclass=SanicMeta):
 
         return types
 
-    def _build_route_context(self, raw):
+    def _build_route_context(self, raw: Dict[str, Any]) -> HashableDict:
         ctx_kwargs = {
             key.replace("ctx_", ""): raw.pop(key)
             for key in {**raw}.keys()
             if key.startswith("ctx_")
         }
-        restricted = [
-            key for key in ctx_kwargs.keys() if key in RESTRICTED_ROUTE_CONTEXT
-        ]
-        if restricted:
-            restricted_arguments = ", ".join(restricted)
-            raise AttributeError(
-                "Cannot use restricted route context: "
-                f"{restricted_arguments}. This limitation is only in place "
-                "until v22.9 when the restricted names will no longer be in"
-                "conflict. See https://github.com/sanic-org/sanic/issues/2303 "
-                "for more information."
-            )
         if raw:
             unexpected_arguments = ", ".join(raw.keys())
             raise TypeError(

sanic/mixins/signals.py

@@ -20,7 +20,7 @@ class SignalMixin(metaclass=SanicMeta):
         event: Union[str, Enum],
         *,
         apply: bool = True,
-        condition: Dict[str, Any] = None,
+        condition: Optional[Dict[str, Any]] = None,
         exclusive: bool = True,
     ) -> Callable[[SignalHandler], SignalHandler]:
         """
@@ -64,7 +64,7 @@ class SignalMixin(metaclass=SanicMeta):
         self,
         handler: Optional[Callable[..., Any]],
         event: str,
-        condition: Dict[str, Any] = None,
+        condition: Optional[Dict[str, Any]] = None,
         exclusive: bool = True,
     ):
         if not handler:

sanic/mixins/startup.py

@@ -16,14 +16,18 @@ from asyncio import (
 from contextlib import suppress
 from functools import partial
 from importlib import import_module
+from multiprocessing import Manager, Pipe, get_context
+from multiprocessing.context import BaseContext
 from pathlib import Path
-from socket import socket
+from socket import SHUT_RDWR, socket
 from ssl import SSLContext
 from typing import (
     TYPE_CHECKING,
     Any,
+    Callable,
     Dict,
     List,
+    Mapping,
     Optional,
     Set,
     Tuple,
@@ -32,24 +36,33 @@ from typing import (
     cast,
 )
 
-from sanic import reloader_helpers
+from sanic.application.ext import setup_ext
 from sanic.application.logo import get_logo
 from sanic.application.motd import MOTD
 from sanic.application.state import ApplicationServerInfo, Mode, ServerStage
 from sanic.base.meta import SanicMeta
-from sanic.compat import OS_IS_WINDOWS, is_atty
+from sanic.compat import OS_IS_WINDOWS, StartMethod, is_atty
-from sanic.helpers import _default
+from sanic.exceptions import ServerKilled
+from sanic.helpers import Default, _default
 from sanic.http.constants import HTTP
 from sanic.http.tls import get_ssl_context, process_to_context
-from sanic.log import Colors, deprecation, error_logger, logger
+from sanic.http.tls.context import SanicSSLContext
+from sanic.log import Colors, error_logger, logger
 from sanic.models.handler_types import ListenerType
 from sanic.server import Signal as ServerSignal
 from sanic.server import try_use_uvloop
 from sanic.server.async_server import AsyncioServer
 from sanic.server.events import trigger_events
+from sanic.server.loop import try_windows_loop
 from sanic.server.protocols.http_protocol import HttpProtocol
 from sanic.server.protocols.websocket_protocol import WebSocketProtocol
-from sanic.server.runners import serve, serve_multiple, serve_single
+from sanic.server.runners import serve
+from sanic.server.socket import configure_socket, remove_unix_socket
+from sanic.worker.loader import AppLoader
+from sanic.worker.manager import WorkerManager
+from sanic.worker.multiplexer import WorkerMultiplexer
+from sanic.worker.reloader import Reloader
+from sanic.worker.serve import worker_serve
 
 
 if TYPE_CHECKING:
@@ -59,20 +72,37 @@ if TYPE_CHECKING:
 
 SANIC_PACKAGES = ("sanic-routing", "sanic-testing", "sanic-ext")
 
-if sys.version_info < (3, 8):
+if sys.version_info < (3, 8):  # no cov
     HTTPVersion = Union[HTTP, int]
-else:
+else:  # no cov
     from typing import Literal
 
     HTTPVersion = Union[HTTP, Literal[1], Literal[3]]
 
 
-class RunnerMixin(metaclass=SanicMeta):
+class StartupMixin(metaclass=SanicMeta):
     _app_registry: Dict[str, Sanic]
     config: Config
     listeners: Dict[str, List[ListenerType[Any]]]
     state: ApplicationState
     websocket_enabled: bool
+    multiplexer: WorkerMultiplexer
+    start_method: StartMethod = _default
+
+    def setup_loop(self):
+        if not self.asgi:
+            if self.config.USE_UVLOOP is True or (
+                isinstance(self.config.USE_UVLOOP, Default)
+                and not OS_IS_WINDOWS
+            ):
+                try_use_uvloop()
+            elif OS_IS_WINDOWS:
+                try_windows_loop()
+
+    @property
+    def m(self) -> WorkerMultiplexer:
+        """Interface for interacting with the worker processes"""
+        return self.multiplexer
 
     def make_coffee(self, *args, **kwargs):
         self.state.coffee = True
@@ -95,7 +125,7 @@ class RunnerMixin(metaclass=SanicMeta):
         register_sys_signals: bool = True,
         access_log: Optional[bool] = None,
         unix: Optional[str] = None,
-        loop: AbstractEventLoop = None,
+        loop: Optional[AbstractEventLoop] = None,
         reload_dir: Optional[Union[List[str], str]] = None,
         noisy_exceptions: Optional[bool] = None,
         motd: bool = True,
@@ -103,6 +133,7 @@ class RunnerMixin(metaclass=SanicMeta):
         verbosity: int = 0,
         motd_display: Optional[Dict[str, str]] = None,
         auto_tls: bool = False,
+        single_process: bool = False,
     ) -> None:
         """
         Run the HTTP Server and listen until keyboard interrupt or term
@@ -163,9 +194,14 @@ class RunnerMixin(metaclass=SanicMeta):
             verbosity=verbosity,
             motd_display=motd_display,
             auto_tls=auto_tls,
+            single_process=single_process,
         )
 
-        self.__class__.serve(primary=self)  # type: ignore
+        if single_process:
+            serve = self.__class__.serve_single
+        else:
+            serve = self.__class__.serve
+        serve(primary=self)  # type: ignore
 
     def prepare(
         self,
@@ -184,14 +220,16 @@ class RunnerMixin(metaclass=SanicMeta):
         register_sys_signals: bool = True,
         access_log: Optional[bool] = None,
         unix: Optional[str] = None,
-        loop: AbstractEventLoop = None,
+        loop: Optional[AbstractEventLoop] = None,
         reload_dir: Optional[Union[List[str], str]] = None,
         noisy_exceptions: Optional[bool] = None,
         motd: bool = True,
         fast: bool = False,
         verbosity: int = 0,
         motd_display: Optional[Dict[str, str]] = None,
+        coffee: bool = False,
         auto_tls: bool = False,
+        single_process: bool = False,
     ) -> None:
         if version == 3 and self.state.server_info:
             raise RuntimeError(
@@ -204,6 +242,9 @@ class RunnerMixin(metaclass=SanicMeta):
             debug = True
             auto_reload = True
 
+        if debug and access_log is None:
+            access_log = True
+
         self.state.verbosity = verbosity
         if not self.state.auto_reload:
             self.state.auto_reload = bool(auto_reload)
@@ -211,6 +252,18 @@ class RunnerMixin(metaclass=SanicMeta):
         if fast and workers != 1:
             raise RuntimeError("You cannot use both fast=True and workers=X")
 
+        if single_process and (fast or (workers > 1) or auto_reload):
+            raise RuntimeError(
+                "Single process cannot be run with multiple workers "
+                "or auto-reload"
+            )
+
+        if register_sys_signals is False and not single_process:
+            raise RuntimeError(
+                "Cannot run Sanic.serve with register_sys_signals=False. "
+                "Use Sanic.serve_single."
+            )
+
         if motd_display:
             self.config.MOTD_DISPLAY.update(motd_display)
 
@@ -234,12 +287,6 @@ class RunnerMixin(metaclass=SanicMeta):
                 "#asynchronous-support"
             )
 
-        if (
-            self.__class__.should_auto_reload()
-            and os.environ.get("SANIC_SERVER_RUNNING") != "true"
-        ):  # no cov
-            return
-
         if sock is None:
             host, port = self.get_address(host, port, version, auto_tls)
 
@@ -265,6 +312,9 @@ class RunnerMixin(metaclass=SanicMeta):
             except AttributeError:  # no cov
                 workers = os.cpu_count() or 1
 
+        if coffee:
+            self.state.coffee = True
+
         server_settings = self._helper(
             host=host,
             port=port,
@@ -283,10 +333,10 @@ class RunnerMixin(metaclass=SanicMeta):
             ApplicationServerInfo(settings=server_settings)
         )
 
-        if self.config.USE_UVLOOP is True or (
+        # if self.config.USE_UVLOOP is True or (
-            self.config.USE_UVLOOP is _default and not OS_IS_WINDOWS
+        #     self.config.USE_UVLOOP is _default and not OS_IS_WINDOWS
-        ):
+        # ):
-            try_use_uvloop()
+        #     try_use_uvloop()
 
     async def create_server(
         self,
@@ -296,12 +346,12 @@ class RunnerMixin(metaclass=SanicMeta):
         debug: bool = False,
         ssl: Union[None, SSLContext, dict, str, list, tuple] = None,
         sock: Optional[socket] = None,
-        protocol: Type[Protocol] = None,
+        protocol: Optional[Type[Protocol]] = None,
         backlog: int = 100,
         access_log: Optional[bool] = None,
         unix: Optional[str] = None,
         return_asyncio_server: bool = False,
-        asyncio_server_kwargs: Dict[str, Any] = None,
+        asyncio_server_kwargs: Optional[Dict[str, Any]] = None,
         noisy_exceptions: Optional[bool] = None,
     ) -> Optional[AsyncioServer]:
         """
@@ -375,7 +425,7 @@ class RunnerMixin(metaclass=SanicMeta):
             run_async=return_asyncio_server,
         )
 
-        if self.config.USE_UVLOOP is not _default:
+        if not isinstance(self.config.USE_UVLOOP, Default):
             error_logger.warning(
                 "You are trying to change the uvloop configuration, but "
                 "this is only effective when using the run(...) method. "
@@ -395,18 +445,23 @@ class RunnerMixin(metaclass=SanicMeta):
             asyncio_server_kwargs=asyncio_server_kwargs, **server_settings
         )
 
-    def stop(self):
+    def stop(self, terminate: bool = True, unregister: bool = False):
         """
         This kills the Sanic
         """
+        if terminate and hasattr(self, "multiplexer"):
+            self.multiplexer.terminate()
         if self.state.stage is not ServerStage.STOPPED:
-            self.shutdown_tasks(timeout=0)
+            self.shutdown_tasks(timeout=0)  # type: ignore
             for task in all_tasks():
                 with suppress(AttributeError):
                     if task.get_name() == "RunServer":
                         task.cancel()
             get_event_loop().stop()
 
+        if unregister:
+            self.__class__.unregister_app(self)  # type: ignore
+
     def _helper(
         self,
         host: Optional[str] = None,
@@ -417,7 +472,7 @@ class RunnerMixin(metaclass=SanicMeta):
         sock: Optional[socket] = None,
         unix: Optional[str] = None,
         workers: int = 1,
-        loop: AbstractEventLoop = None,
+        loop: Optional[AbstractEventLoop] = None,
         protocol: Type[Protocol] = HttpProtocol,
         backlog: int = 100,
         register_sys_signals: bool = True,
@@ -468,7 +523,11 @@ class RunnerMixin(metaclass=SanicMeta):
 
         self.motd(server_settings=server_settings)
 
-        if is_atty() and not self.state.is_debug:
+        if (
+            is_atty()
+            and not self.state.is_debug
+            and not os.environ.get("SANIC_IGNORE_PRODUCTION_WARNING")
+        ):
             error_logger.warning(
                 f"{Colors.YELLOW}Sanic is running in PRODUCTION mode. "
                 "Consider using '--debug' or '--dev' while actively "
@@ -494,85 +553,94 @@ class RunnerMixin(metaclass=SanicMeta):
 
     def motd(
         self,
-        serve_location: str = "",
         server_settings: Optional[Dict[str, Any]] = None,
     ):
-        if serve_location:
+        if (
-            deprecation(
+            os.environ.get("SANIC_WORKER_NAME")
-                "Specifying a serve_location in the MOTD is deprecated and "
+            or os.environ.get("SANIC_MOTD_OUTPUT")
-                "will be removed.",
+            or os.environ.get("SANIC_WORKER_PROCESS")
-                22.9,
+            or os.environ.get("SANIC_SERVER_RUNNING")
-            )
+        ):
-        else:
+            return
-            serve_location = self.get_server_location(server_settings)
+        serve_location = self.get_server_location(server_settings)
         if self.config.MOTD:
-            mode = [f"{self.state.mode},"]
-            if self.state.fast:
-                mode.append("goin' fast")
-            if self.state.asgi:
-                mode.append("ASGI")
-            else:
-                if self.state.workers == 1:
-                    mode.append("single worker")
-                else:
-                    mode.append(f"w/ {self.state.workers} workers")
-
-            if server_settings:
-                server = ", ".join(
-                    (
-                        self.state.server,
-                        server_settings["version"].display(),  # type: ignore
-                    )
-                )
-            else:
-                server = ""
-
-            display = {
-                "mode": " ".join(mode),
-                "server": server,
-                "python": platform.python_version(),
-                "platform": platform.platform(),
-            }
-            extra = {}
-            if self.config.AUTO_RELOAD:
-                reload_display = "enabled"
-                if self.state.reload_dirs:
-                    reload_display += ", ".join(
-                        [
-                            "",
-                            *(
-                                str(path.absolute())
-                                for path in self.state.reload_dirs
-                            ),
-                        ]
-                    )
-                display["auto-reload"] = reload_display
-
-            packages = []
-            for package_name in SANIC_PACKAGES:
-                module_name = package_name.replace("-", "_")
-                try:
-                    module = import_module(module_name)
-                    packages.append(
-                        f"{package_name}=={module.__version__}"  # type: ignore
-                    )
-                except ImportError:
-                    ...
-
-            if packages:
-                display["packages"] = ", ".join(packages)
-
-            if self.config.MOTD_DISPLAY:
-                extra.update(self.config.MOTD_DISPLAY)
-
             logo = get_logo(coffee=self.state.coffee)
+            display, extra = self.get_motd_data(server_settings)
 
             MOTD.output(logo, serve_location, display, extra)
 
+    def get_motd_data(
+        self, server_settings: Optional[Dict[str, Any]] = None
+    ) -> Tuple[Dict[str, Any], Dict[str, Any]]:
+        mode = [f"{self.state.mode},"]
+        if self.state.fast:
+            mode.append("goin' fast")
+        if self.state.asgi:
+            mode.append("ASGI")
+        else:
+            if self.state.workers == 1:
+                mode.append("single worker")
+            else:
+                mode.append(f"w/ {self.state.workers} workers")
+
+        if server_settings:
+            server = ", ".join(
+                (
+                    self.state.server,
+                    server_settings["version"].display(),  # type: ignore
+                )
+            )
+        else:
+            server = "ASGI" if self.asgi else "unknown"  # type: ignore
+
+        display = {
+            "mode": " ".join(mode),
+            "server": server,
+            "python": platform.python_version(),
+            "platform": platform.platform(),
+        }
+        extra = {}
+        if self.config.AUTO_RELOAD:
+            reload_display = "enabled"
+            if self.state.reload_dirs:
+                reload_display += ", ".join(
+                    [
+                        "",
+                        *(
+                            str(path.absolute())
+                            for path in self.state.reload_dirs
+                        ),
+                    ]
+                )
+            display["auto-reload"] = reload_display
+
+        packages = []
+        for package_name in SANIC_PACKAGES:
+            module_name = package_name.replace("-", "_")
+            try:
+                module = import_module(module_name)
+                packages.append(
+                    f"{package_name}=={module.__version__}"  # type: ignore
+                )
+            except ImportError:  # no cov
+                ...
+
+        if packages:
+            display["packages"] = ", ".join(packages)
+
+        if self.config.MOTD_DISPLAY:
+            extra.update(self.config.MOTD_DISPLAY)
+
+        return display, extra
+
     @property
     def serve_location(self) -> str:
-        server_settings = self.state.server_info[0].settings
+        try:
-        return self.get_server_location(server_settings)
+            server_settings = self.state.server_info[0].settings
+            return self.get_server_location(server_settings)
+        except IndexError:
+            location = "ASGI" if self.asgi else "unknown"  # type: ignore
+            return f"http://<{location}>"
 
     @staticmethod
     def get_server_location(
@@ -583,24 +651,20 @@ class RunnerMixin(metaclass=SanicMeta):
         if not server_settings:
             return serve_location
 
-        if server_settings["ssl"] is not None:
+        host = server_settings["host"]
+        port = server_settings["port"]
+
+        if server_settings.get("ssl") is not None:
             proto = "https"
-        if server_settings["unix"]:
+        if server_settings.get("unix"):
             serve_location = f'{server_settings["unix"]} {proto}://...'
-        elif server_settings["sock"]:
+        elif server_settings.get("sock"):
-            serve_location = (
+            host, port, *_ = server_settings["sock"].getsockname()
-                f'{server_settings["sock"].getsockname()} {proto}://...'
+
-            )
+        if not serve_location and host and port:
-        elif server_settings["host"] and server_settings["port"]:
             # colon(:) is legal for a host only in an ipv6 address
-            display_host = (
+            display_host = f"[{host}]" if ":" in host else host
-                f'[{server_settings["host"]}]'
+            serve_location = f"{proto}://{display_host}:{port}"
-                if ":" in server_settings["host"]
-                else server_settings["host"]
-            )
-            serve_location = (
-                f'{proto}://{display_host}:{server_settings["port"]}'
-            )
 
         return serve_location
 
@@ -620,7 +684,209 @@ class RunnerMixin(metaclass=SanicMeta):
         return any(app.state.auto_reload for app in cls._app_registry.values())
 
     @classmethod
-    def serve(cls, primary: Optional[Sanic] = None) -> None:
+    def _get_startup_method(cls) -> str:
+        return (
+            cls.start_method
+            if not isinstance(cls.start_method, Default)
+            else "spawn"
+        )
+
+    @classmethod
+    def _get_context(cls) -> BaseContext:
+        method = cls._get_startup_method()
+        logger.debug("Creating multiprocessing context using '%s'", method)
+        return get_context(method)
+
+    @classmethod
+    def serve(
+        cls,
+        primary: Optional[Sanic] = None,
+        *,
+        app_loader: Optional[AppLoader] = None,
+        factory: Optional[Callable[[], Sanic]] = None,
+    ) -> None:
+        os.environ["SANIC_MOTD_OUTPUT"] = "true"
+        apps = list(cls._app_registry.values())
+        if factory:
+            primary = factory()
+        else:
+            if not primary:
+                if app_loader:
+                    primary = app_loader.load()
+                if not primary:
+                    try:
+                        primary = apps[0]
+                    except IndexError:
+                        raise RuntimeError(
+                            "Did not find any applications."
+                        ) from None
+
+            # This exists primarily for unit testing
+            if not primary.state.server_info:  # no cov
+                for app in apps:
+                    app.state.server_info.clear()
+                return
+
+        try:
+            primary_server_info = primary.state.server_info[0]
+        except IndexError:
+            raise RuntimeError(
+                f"No server information found for {primary.name}. Perhaps you "
+                "need to run app.prepare(...)?"
+            ) from None
+
+        socks = []
+        sync_manager = Manager()
+        setup_ext(primary)
+        exit_code = 0
+        try:
+            primary_server_info.settings.pop("main_start", None)
+            primary_server_info.settings.pop("main_stop", None)
+            main_start = primary.listeners.get("main_process_start")
+            main_stop = primary.listeners.get("main_process_stop")
+            app = primary_server_info.settings.pop("app")
+            app.setup_loop()
+            loop = new_event_loop()
+            trigger_events(main_start, loop, primary)
+
+            socks = [
+                sock
+                for sock in [
+                    configure_socket(server_info.settings)
+                    for app in apps
+                    for server_info in app.state.server_info
+                ]
+                if sock
+            ]
+            primary_server_info.settings["run_multiple"] = True
+            monitor_sub, monitor_pub = Pipe(True)
+            worker_state: Mapping[str, Any] = sync_manager.dict()
+            kwargs: Dict[str, Any] = {
+                **primary_server_info.settings,
+                "monitor_publisher": monitor_pub,
+                "worker_state": worker_state,
+            }
+
+            if not app_loader:
+                if factory:
+                    app_loader = AppLoader(factory=factory)
+                else:
+                    app_loader = AppLoader(
+                        factory=partial(cls.get_app, app.name)  # type: ignore
+                    )
+            kwargs["app_name"] = app.name
+            kwargs["app_loader"] = app_loader
+            kwargs["server_info"] = {}
+            kwargs["passthru"] = {
+                "auto_reload": app.auto_reload,
+                "state": {
+                    "verbosity": app.state.verbosity,
+                    "mode": app.state.mode,
+                },
+                "config": {
+                    "ACCESS_LOG": app.config.ACCESS_LOG,
+                    "NOISY_EXCEPTIONS": app.config.NOISY_EXCEPTIONS,
+                },
+                "shared_ctx": app.shared_ctx.__dict__,
+            }
+            for app in apps:
+                kwargs["server_info"][app.name] = []
+                for server_info in app.state.server_info:
+                    server_info.settings = {
+                        k: v
+                        for k, v in server_info.settings.items()
+                        if k not in ("main_start", "main_stop", "app", "ssl")
+                    }
+                    kwargs["server_info"][app.name].append(server_info)
+
+            ssl = kwargs.get("ssl")
+
+            if isinstance(ssl, SanicSSLContext):
+                kwargs["ssl"] = ssl.sanic
+
+            manager = WorkerManager(
+                primary.state.workers,
+                worker_serve,
+                kwargs,
+                cls._get_context(),
+                (monitor_pub, monitor_sub),
+                worker_state,
+            )
+            if cls.should_auto_reload():
+                reload_dirs: Set[Path] = primary.state.reload_dirs.union(
+                    *(app.state.reload_dirs for app in apps)
+                )
+                reloader = Reloader(monitor_pub, 0, reload_dirs, app_loader)
+                manager.manage("Reloader", reloader, {}, transient=False)
+
+            inspector = None
+            if primary.config.INSPECTOR:
+                display, extra = primary.get_motd_data()
+                packages = [
+                    pkg.strip() for pkg in display["packages"].split(",")
+                ]
+                module = import_module("sanic")
+                sanic_version = f"sanic=={module.__version__}"  # type: ignore
+                app_info = {
+                    **display,
+                    "packages": [sanic_version, *packages],
+                    "extra": extra,
+                }
+                inspector = primary.inspector_class(
+                    monitor_pub,
+                    app_info,
+                    worker_state,
+                    primary.config.INSPECTOR_HOST,
+                    primary.config.INSPECTOR_PORT,
+                    primary.config.INSPECTOR_API_KEY,
+                    primary.config.INSPECTOR_TLS_KEY,
+                    primary.config.INSPECTOR_TLS_CERT,
+                )
+                manager.manage("Inspector", inspector, {}, transient=False)
+
+            primary._inspector = inspector
+            primary._manager = manager
+
+            ready = primary.listeners["main_process_ready"]
+            trigger_events(ready, loop, primary)
+
+            manager.run()
+        except ServerKilled:
+            exit_code = 1
+        except BaseException:
+            kwargs = primary_server_info.settings
+            error_logger.exception(
+                "Experienced exception while trying to serve"
+            )
+            raise
+        finally:
+            logger.info("Server Stopped")
+            for app in apps:
+                app.state.server_info.clear()
+                app.router.reset()
+                app.signal_router.reset()
+
+            sync_manager.shutdown()
+            for sock in socks:
+                try:
+                    sock.shutdown(SHUT_RDWR)
+                except OSError:
+                    ...
+                sock.close()
+            socks = []
+            trigger_events(main_stop, loop, primary)
+            loop.close()
+            cls._cleanup_env_vars()
+            cls._cleanup_apps()
+            unix = kwargs.get("unix")
+            if unix:
+                remove_unix_socket(unix)
+        if exit_code:
+            os._exit(exit_code)
+
+    @classmethod
+    def serve_single(cls, primary: Optional[Sanic] = None) -> None:
+        os.environ["SANIC_MOTD_OUTPUT"] = "true"
         apps = list(cls._app_registry.values())
 
         if not primary:
@@ -629,22 +895,6 @@ class RunnerMixin(metaclass=SanicMeta):
             except IndexError:
                 raise RuntimeError("Did not find any applications.")
 
-        reloader_start = primary.listeners.get("reload_process_start")
-        reloader_stop = primary.listeners.get("reload_process_stop")
-        # We want to run auto_reload if ANY of the applications have it enabled
-        if (
-            cls.should_auto_reload()
-            and os.environ.get("SANIC_SERVER_RUNNING") != "true"
-        ):  # no cov
-            loop = new_event_loop()
-            trigger_events(reloader_start, loop, primary)
-            reload_dirs: Set[Path] = primary.state.reload_dirs.union(
-                *(app.state.reload_dirs for app in apps)
-            )
-            reloader_helpers.watchdog(1.0, reload_dirs)
-            trigger_events(reloader_stop, loop, primary)
-            return
-
         # This exists primarily for unit testing
         if not primary.state.server_info:  # no cov
             for app in apps:
@@ -653,36 +903,49 @@ class RunnerMixin(metaclass=SanicMeta):
 
         primary_server_info = primary.state.server_info[0]
         primary.before_server_start(partial(primary._start_servers, apps=apps))
+        kwargs = {
+            k: v
+            for k, v in primary_server_info.settings.items()
+            if k
+            not in (
+                "main_start",
+                "main_stop",
+                "app",
+            )
+        }
+        kwargs["app_name"] = primary.name
+        kwargs["app_loader"] = None
+        sock = configure_socket(kwargs)
+
+        kwargs["server_info"] = {}
+        kwargs["server_info"][primary.name] = []
+        for server_info in primary.state.server_info:
+            server_info.settings = {
+                k: v
+                for k, v in server_info.settings.items()
+                if k not in ("main_start", "main_stop", "app")
+            }
+            kwargs["server_info"][primary.name].append(server_info)
 
         try:
-            primary_server_info.stage = ServerStage.SERVING
+            worker_serve(monitor_publisher=None, **kwargs)
-
-            if primary.state.workers > 1 and os.name != "posix":  # no cov
-                logger.warn(
-                    f"Multiprocessing is currently not supported on {os.name},"
-                    " using workers=1 instead"
-                )
-                primary.state.workers = 1
-            if primary.state.workers == 1:
-                serve_single(primary_server_info.settings)
-            elif primary.state.workers == 0:
-                raise RuntimeError("Cannot serve with no workers")
-            else:
-                serve_multiple(
-                    primary_server_info.settings, primary.state.workers
-                )
         except BaseException:
             error_logger.exception(
                 "Experienced exception while trying to serve"
             )
             raise
         finally:
-            primary_server_info.stage = ServerStage.STOPPED
+            logger.info("Server Stopped")
-        logger.info("Server Stopped")
+            for app in apps:
-        for app in apps:
+                app.state.server_info.clear()
-            app.state.server_info.clear()
+                app.router.reset()
-            app.router.reset()
+                app.signal_router.reset()
-            app.signal_router.reset()
+
+            if sock:
+                sock.close()
+
+            cls._cleanup_env_vars()
+            cls._cleanup_apps()
 
     async def _start_servers(
         self,
@@ -720,7 +983,7 @@ class RunnerMixin(metaclass=SanicMeta):
                         *server_info.settings.pop("main_start", []),
                         *server_info.settings.pop("main_stop", []),
                     ]
-                    if handlers:
+                    if handlers:  # no cov
                         error_logger.warning(
                             f"Sanic found {len(handlers)} listener(s) on "
                             "secondary applications attached to the main "
@@ -733,12 +996,15 @@ class RunnerMixin(metaclass=SanicMeta):
                     if not server_info.settings["loop"]:
                         server_info.settings["loop"] = get_running_loop()
 
+                    serve_args: Dict[str, Any] = {
+                        **server_info.settings,
+                        "run_async": True,
+                        "reuse_port": bool(primary.state.workers - 1),
+                    }
+                    if "app" not in serve_args:
+                        serve_args["app"] = app
                     try:
-                        server_info.server = await serve(
+                        server_info.server = await serve(**serve_args)
-                            **server_info.settings,
-                            run_async=True,
-                            reuse_port=bool(primary.state.workers - 1),
-                        )
                     except OSError as e:  # no cov
                         first_message = (
                             "An OSError was detected on startup. "
@@ -764,10 +1030,9 @@ class RunnerMixin(metaclass=SanicMeta):
 
     async def _run_server(
         self,
-        app: RunnerMixin,
+        app: StartupMixin,
         server_info: ApplicationServerInfo,
-    ) -> None:
+    ) -> None:  # no cov
-
         try:
             # We should never get to this point without a server
             # This is primarily to keep mypy happy
@@ -790,3 +1055,26 @@ class RunnerMixin(metaclass=SanicMeta):
         finally:
             server_info.stage = ServerStage.STOPPED
             server_info.server = None
+
+    @staticmethod
+    def _cleanup_env_vars():
+        variables = (
+            "SANIC_RELOADER_PROCESS",
+            "SANIC_IGNORE_PRODUCTION_WARNING",
+            "SANIC_WORKER_NAME",
+            "SANIC_MOTD_OUTPUT",
+            "SANIC_WORKER_PROCESS",
+            "SANIC_SERVER_RUNNING",
+        )
+        for var in variables:
+            try:
+                del os.environ[var]
+            except KeyError:
+                ...
+
+    @classmethod
+    def _cleanup_apps(cls):
+        for app in cls._app_registry.values():
+            app.state.server_info.clear()
+            app.router.reset()
+            app.signal_router.reset()

sanic/mixins/static.py

@@ -0,0 +1,346 @@
+from email.utils import formatdate
+from functools import partial, wraps
+from mimetypes import guess_type
+from os import PathLike, path
+from pathlib import Path, PurePath
+from typing import Optional, Sequence, Set, Union
+from urllib.parse import unquote
+
+from sanic_routing.route import Route
+
+from sanic.base.meta import SanicMeta
+from sanic.compat import stat_async
+from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE
+from sanic.exceptions import FileNotFound, HeaderNotFound, RangeNotSatisfiable
+from sanic.handlers import ContentRangeHandler
+from sanic.handlers.directory import DirectoryHandler
+from sanic.log import error_logger
+from sanic.mixins.base import BaseMixin
+from sanic.models.futures import FutureStatic
+from sanic.request import Request
+from sanic.response import HTTPResponse, file, file_stream, validate_file
+
+
+class StaticMixin(BaseMixin, metaclass=SanicMeta):
+    def __init__(self, *args, **kwargs) -> None:
+        self._future_statics: Set[FutureStatic] = set()
+
+    def _apply_static(self, static: FutureStatic) -> Route:
+        raise NotImplementedError  # noqa
+
+    def static(
+        self,
+        uri: str,
+        file_or_directory: Union[PathLike, str],
+        pattern: str = r"/?.+",
+        use_modified_since: bool = True,
+        use_content_range: bool = False,
+        stream_large_files: Union[bool, int] = False,
+        name: str = "static",
+        host: Optional[str] = None,
+        strict_slashes: Optional[bool] = None,
+        content_type: Optional[str] = None,
+        apply: bool = True,
+        resource_type: Optional[str] = None,
+        index: Optional[Union[str, Sequence[str]]] = None,
+        directory_view: bool = False,
+        directory_handler: Optional[DirectoryHandler] = None,
+    ):
+        """
+        Register a root to serve files from. The input can either be a
+        file or a directory. This method will enable an easy and simple way
+        to setup the :class:`Route` necessary to serve the static files.
+
+        :param uri: URL path to be used for serving static content
+        :param file_or_directory: Path for the Static file/directory with
+            static files
+        :param pattern: Regex Pattern identifying the valid static files
+        :param use_modified_since: If true, send file modified time, and return
+            not modified if the browser's matches the server's
+        :param use_content_range: If true, process header for range requests
+            and sends the file part that is requested
+        :param stream_large_files: If true, use the
+            :func:`StreamingHTTPResponse.file_stream` handler rather
+            than the :func:`HTTPResponse.file` handler to send the file.
+            If this is an integer, this represents the threshold size to
+            switch to :func:`StreamingHTTPResponse.file_stream`
+        :param name: user defined name used for url_for
+        :param host: Host IP or FQDN for the service to use
+        :param strict_slashes: Instruct :class:`Sanic` to check if the request
+            URLs need to terminate with a */*
+        :param content_type: user defined content type for header
+        :param apply: If true, will register the route immediately
+        :param resource_type: Explicitly declare a resource to be a "
+            file" or a "dir"
+        :param index: When exposing against a directory, index is the name that
+            will be served as the default file. When multiple files names are
+            passed, then they will be tried in order.
+        :param directory_view: Whether to fallback to showing the directory
+            viewer when exposing a directory
+        :param directory_handler: An instance of :class:`DirectoryHandler`
+            that can be used for explicitly controlling and subclassing the
+            behavior of the default directory handler
+        :return: routes registered on the router
+        :rtype: List[sanic.router.Route]
+        """
+
+        name = self._generate_name(name)
+
+        if strict_slashes is None and self.strict_slashes is not None:
+            strict_slashes = self.strict_slashes
+
+        if not isinstance(file_or_directory, (str, bytes, PurePath)):
+            raise ValueError(
+                f"Static route must be a valid path, not {file_or_directory}"
+            )
+
+        try:
+            file_or_directory = Path(file_or_directory)
+        except TypeError:
+            raise TypeError(
+                "Static file or directory must be a path-like object or string"
+            )
+
+        if directory_handler and (directory_view or index):
+            raise ValueError(
+                "When explicitly setting directory_handler, you cannot "
+                "set either directory_view or index. Instead, pass "
+                "these arguments to your DirectoryHandler instance."
+            )
+
+        if not directory_handler:
+            directory_handler = DirectoryHandler(
+                uri=uri,
+                directory=file_or_directory,
+                directory_view=directory_view,
+                index=index,
+            )
+
+        static = FutureStatic(
+            uri,
+            file_or_directory,
+            pattern,
+            use_modified_since,
+            use_content_range,
+            stream_large_files,
+            name,
+            host,
+            strict_slashes,
+            content_type,
+            resource_type,
+            directory_handler,
+        )
+        self._future_statics.add(static)
+
+        if apply:
+            self._apply_static(static)
+
+
+class StaticHandleMixin(metaclass=SanicMeta):
+    def _apply_static(self, static: FutureStatic) -> Route:
+        return self._register_static(static)
+
+    def _register_static(
+        self,
+        static: FutureStatic,
+    ):
+        # TODO: Though sanic is not a file server, I feel like we should
+        # at least make a good effort here.  Modified-since is nice, but
+        # we could also look into etags, expires, and caching
+        """
+        Register a static directory handler with Sanic by adding a route to the
+        router and registering a handler.
+        """
+
+        if isinstance(static.file_or_directory, bytes):
+            file_or_directory = static.file_or_directory.decode("utf-8")
+        elif isinstance(static.file_or_directory, PurePath):
+            file_or_directory = str(static.file_or_directory)
+        elif not isinstance(static.file_or_directory, str):
+            raise ValueError("Invalid file path string.")
+        else:
+            file_or_directory = static.file_or_directory
+
+        uri = static.uri
+        name = static.name
+        # If we're not trying to match a file directly,
+        # serve from the folder
+        if not static.resource_type:
+            if not path.isfile(file_or_directory):
+                uri = uri.rstrip("/")
+                uri += "/<__file_uri__:path>"
+        elif static.resource_type == "dir":
+            if path.isfile(file_or_directory):
+                raise TypeError(
+                    "Resource type improperly identified as directory. "
+                    f"'{file_or_directory}'"
+                )
+            uri = uri.rstrip("/")
+            uri += "/<__file_uri__:path>"
+        elif static.resource_type == "file" and not path.isfile(
+            file_or_directory
+        ):
+            raise TypeError(
+                "Resource type improperly identified as file. "
+                f"'{file_or_directory}'"
+            )
+        elif static.resource_type != "file":
+            raise ValueError(
+                "The resource_type should be set to 'file' or 'dir'"
+            )
+
+        # special prefix for static files
+        # if not static.name.startswith("_static_"):
+        #     name = f"_static_{static.name}"
+
+        _handler = wraps(self._static_request_handler)(
+            partial(
+                self._static_request_handler,
+                file_or_directory=file_or_directory,
+                use_modified_since=static.use_modified_since,
+                use_content_range=static.use_content_range,
+                stream_large_files=static.stream_large_files,
+                content_type=static.content_type,
+                directory_handler=static.directory_handler,
+            )
+        )
+
+        route, _ = self.route(  # type: ignore
+            uri=uri,
+            methods=["GET", "HEAD"],
+            name=name,
+            host=static.host,
+            strict_slashes=static.strict_slashes,
+            static=True,
+        )(_handler)
+
+        return route
+
+    async def _static_request_handler(
+        self,
+        request: Request,
+        *,
+        file_or_directory: PathLike,
+        use_modified_since: bool,
+        use_content_range: bool,
+        stream_large_files: Union[bool, int],
+        directory_handler: DirectoryHandler,
+        content_type: Optional[str] = None,
+        __file_uri__: Optional[str] = None,
+    ):
+        not_found = FileNotFound(
+            "File not found",
+            path=file_or_directory,
+            relative_url=__file_uri__,
+        )
+
+        # Merge served directory and requested file if provided
+        file_path = await self._get_file_path(
+            file_or_directory, __file_uri__, not_found
+        )
+
+        try:
+            headers = {}
+            # Check if the client has been sent this file before
+            # and it has not been modified since
+            stats = None
+            if use_modified_since:
+                stats = await stat_async(file_path)
+                modified_since = stats.st_mtime
+                response = await validate_file(request.headers, modified_since)
+                if response:
+                    return response
+                headers["Last-Modified"] = formatdate(
+                    modified_since, usegmt=True
+                )
+            _range = None
+            if use_content_range:
+                _range = None
+                if not stats:
+                    stats = await stat_async(file_path)
+                headers["Accept-Ranges"] = "bytes"
+                headers["Content-Length"] = str(stats.st_size)
+                if request.method != "HEAD":
+                    try:
+                        _range = ContentRangeHandler(request, stats)
+                    except HeaderNotFound:
+                        pass
+                    else:
+                        del headers["Content-Length"]
+                        headers.update(_range.headers)
+
+            if "content-type" not in headers:
+                content_type = (
+                    content_type
+                    or guess_type(file_path)[0]
+                    or DEFAULT_HTTP_CONTENT_TYPE
+                )
+
+                if "charset=" not in content_type and (
+                    content_type.startswith("text/")
+                    or content_type == "application/javascript"
+                ):
+                    content_type += "; charset=utf-8"
+
+                headers["Content-Type"] = content_type
+
+            if request.method == "HEAD":
+                return HTTPResponse(headers=headers)
+            else:
+                if stream_large_files:
+                    if isinstance(stream_large_files, bool):
+                        threshold = 1024 * 1024
+                    else:
+                        threshold = stream_large_files
+
+                    if not stats:
+                        stats = await stat_async(file_path)
+                    if stats.st_size >= threshold:
+                        return await file_stream(
+                            file_path, headers=headers, _range=_range
+                        )
+                return await file(file_path, headers=headers, _range=_range)
+        except (IsADirectoryError, PermissionError):
+            return await directory_handler.handle(request, request.path)
+        except RangeNotSatisfiable:
+            raise
+        except FileNotFoundError:
+            raise not_found
+        except Exception:
+            error_logger.exception(
+                "Exception in static request handler: "
+                f"path={file_or_directory}, "
+                f"relative_url={__file_uri__}"
+            )
+            raise
+
+    async def _get_file_path(self, file_or_directory, __file_uri__, not_found):
+        file_path_raw = Path(unquote(file_or_directory))
+        root_path = file_path = file_path_raw.resolve()
+
+        if __file_uri__:
+            # Strip all / that in the beginning of the URL to help prevent
+            # python from herping a derp and treating the uri as an
+            # absolute path
+            unquoted_file_uri = unquote(__file_uri__).lstrip("/")
+            file_path_raw = Path(file_or_directory, unquoted_file_uri)
+            file_path = file_path_raw.resolve()
+            if (
+                file_path < root_path and not file_path_raw.is_symlink()
+            ) or ".." in file_path_raw.parts:
+                error_logger.exception(
+                    f"File not found: path={file_or_directory}, "
+                    f"relative_url={__file_uri__}"
+                )
+                raise not_found
+
+        try:
+            file_path.relative_to(root_path)
+        except ValueError:
+            if not file_path_raw.is_symlink():
+                error_logger.exception(
+                    f"File not found: path={file_or_directory}, "
+                    f"relative_url={__file_uri__}"
+                )
+                raise not_found
+        return file_path

sanic/models/futures.py

@@ -1,6 +1,7 @@
-from pathlib import PurePath
+from pathlib import Path
 from typing import Dict, Iterable, List, NamedTuple, Optional, Union
 
+from sanic.handlers.directory import DirectoryHandler
 from sanic.models.handler_types import (
     ErrorMiddlewareType,
     ListenerType,
@@ -46,16 +47,17 @@ class FutureException(NamedTuple):
 
 class FutureStatic(NamedTuple):
     uri: str
-    file_or_directory: Union[str, bytes, PurePath]
+    file_or_directory: Path
     pattern: str
     use_modified_since: bool
     use_content_range: bool
-    stream_large_files: bool
+    stream_large_files: Union[bool, int]
     name: str
     host: Optional[str]
     strict_slashes: Optional[bool]
-    content_type: Optional[bool]
+    content_type: Optional[str]
     resource_type: Optional[str]
+    directory_handler: DirectoryHandler
 
 
 class FutureSignal(NamedTuple):

sanic/models/server_types.py

@@ -21,6 +21,7 @@ class ConnInfo:
         "client",
         "client_ip",
         "ctx",
+        "lost",
         "peername",
         "server_port",
         "server",
@@ -33,6 +34,7 @@ class ConnInfo:
 
     def __init__(self, transport: TransportProtocol, unix=None):
         self.ctx = SimpleNamespace()
+        self.lost = False
         self.peername = None
         self.server = self.client = ""
         self.server_port = self.client_port = 0

sanic/pages/base.py

@@ -0,0 +1,70 @@
+from abc import ABC, abstractmethod
+
+from html5tagger import HTML, Builder, Document
+
+from sanic import __version__ as VERSION
+from sanic.application.logo import SVG_LOGO_SIMPLE
+from sanic.pages.css import CSS
+
+
+class BasePage(ABC, metaclass=CSS):  # no cov
+    TITLE = "Sanic"
+    HEADING = None
+    CSS: str
+    doc: Builder
+
+    def __init__(self, debug: bool = True) -> None:
+        self.debug = debug
+
+    @property
+    def style(self) -> str:
+        return self.CSS
+
+    def render(self) -> str:
+        self.doc = Document(self.TITLE, lang="en", id="sanic")
+        self._head()
+        self._body()
+        self._foot()
+        return str(self.doc)
+
+    def _head(self) -> None:
+        self.doc.style(HTML(self.style))
+        with self.doc.header:
+            self.doc.div(self.HEADING or self.TITLE)
+
+    def _foot(self) -> None:
+        with self.doc.footer:
+            self.doc.div("powered by")
+            with self.doc.div:
+                self._sanic_logo()
+            if self.debug:
+                self.doc.div(f"Version {VERSION}")
+                with self.doc.div:
+                    for idx, (title, href) in enumerate(
+                        (
+                            ("Docs", "https://sanic.dev"),
+                            ("Help", "https://sanic.dev/en/help.html"),
+                            ("GitHub", "https://github.com/sanic-org/sanic"),
+                        )
+                    ):
+                        if idx > 0:
+                            self.doc(" | ")
+                        self.doc.a(
+                            title,
+                            href=href,
+                            target="_blank",
+                            referrerpolicy="no-referrer",
+                        )
+                self.doc.div("DEBUG mode")
+
+    @abstractmethod
+    def _body(self) -> None:
+        ...
+
+    def _sanic_logo(self) -> None:
+        self.doc.a(
+            HTML(SVG_LOGO_SIMPLE),
+            href="https://sanic.dev",
+            target="_blank",
+            referrerpolicy="no-referrer",
+        )

sanic/pages/css.py

@@ -0,0 +1,35 @@
+from abc import ABCMeta
+from pathlib import Path
+from typing import Optional
+
+
+CURRENT_DIR = Path(__file__).parent
+
+
+def _extract_style(maybe_style: Optional[str], name: str) -> str:
+    if maybe_style is not None:
+        maybe_path = Path(maybe_style)
+        if maybe_path.exists():
+            return maybe_path.read_text(encoding="UTF-8")
+        return maybe_style
+    maybe_path = CURRENT_DIR / "styles" / f"{name}.css"
+    if maybe_path.exists():
+        return maybe_path.read_text(encoding="UTF-8")
+    return ""
+
+
+class CSS(ABCMeta):
+    """Cascade stylesheets, i.e. combine all ancestor styles"""
+
+    def __new__(cls, name, bases, attrs):
+        Page = super().__new__(cls, name, bases, attrs)
+        # Use a locally defined STYLE or the one from styles directory
+        Page.STYLE = _extract_style(attrs.get("STYLE_FILE"), name)
+        Page.STYLE += attrs.get("STYLE_APPEND", "")
+        # Combine with all ancestor styles
+        Page.CSS = "".join(
+            Class.STYLE
+            for Class in reversed(Page.__mro__)
+            if type(Class) is CSS
+        )
+        return Page

sanic/pages/directory_page.py

@@ -0,0 +1,66 @@
+import sys
+
+from typing import Dict, Iterable
+
+from html5tagger import E
+
+from .base import BasePage
+
+
+if sys.version_info < (3, 8):  # no cov
+    FileInfo = Dict
+
+else:
+    from typing import TypedDict
+
+    class FileInfo(TypedDict):
+        icon: str
+        file_name: str
+        file_access: str
+        file_size: str
+
+
+class DirectoryPage(BasePage):  # no cov
+    TITLE = "Directory Viewer"
+
+    def __init__(
+        self, files: Iterable[FileInfo], url: str, debug: bool
+    ) -> None:
+        super().__init__(debug)
+        self.files = files
+        self.url = url
+
+    def _body(self) -> None:
+        with self.doc.main:
+            self._headline()
+            files = list(self.files)
+            if files:
+                self._file_table(files)
+            else:
+                self.doc.p("The folder is empty.")
+
+    def _headline(self):
+        """Implement a heading with the current path, combined with
+        breadcrumb links"""
+        with self.doc.h1(id="breadcrumbs"):
+            p = self.url.split("/")[:-1]
+
+            for i, part in enumerate(p):
+                path = "/".join(p[: i + 1]) + "/"
+                with self.doc.a(href=path):
+                    self.doc.span(part, class_="dir").span("/", class_="sep")
+
+    def _file_table(self, files: Iterable[FileInfo]):
+        with self.doc.table(class_="autoindex container"):
+            for f in files:
+                self._file_row(**f)
+
+    def _file_row(
+        self,
+        icon: str,
+        file_name: str,
+        file_access: str,
+        file_size: str,
+    ):
+        first = E.span(icon, class_="icon").a(file_name, href=file_name)
+        self.doc.tr.td(first).td(file_size).td(file_access)

sanic/pages/error.py

@@ -0,0 +1,109 @@
+from typing import Any, Mapping
+
+import tracerite.html
+
+from html5tagger import E
+from tracerite import html_traceback, inspector
+
+from sanic.request import Request
+
+from .base import BasePage
+
+
+# Avoid showing the request in the traceback variable inspectors
+inspector.blacklist_types += (Request,)
+
+ENDUSER_TEXT = """\
+We're sorry, but it looks like something went wrong. Please try refreshing \
+the page or navigating back to the homepage. If the issue persists, our \
+technical team is working to resolve it as soon as possible. We apologize \
+for the inconvenience and appreciate your patience.\
+"""
+
+
+class ErrorPage(BasePage):
+    STYLE_APPEND = tracerite.html.style
+
+    def __init__(
+        self,
+        debug: bool,
+        title: str,
+        text: str,
+        request: Request,
+        exc: Exception,
+    ) -> None:
+        super().__init__(debug)
+        name = request.app.name.replace("_", " ").strip()
+        if name.islower():
+            name = name.title()
+        self.TITLE = f"Application {name} cannot handle your request"
+        self.HEADING = E("Application ").strong(name)(
+            " cannot handle your request"
+        )
+        self.title = title
+        self.text = text
+        self.request = request
+        self.exc = exc
+        self.details_open = not getattr(exc, "quiet", False)
+
+    def _head(self) -> None:
+        self.doc._script(tracerite.html.javascript)
+        super()._head()
+
+    def _body(self) -> None:
+        debug = self.request.app.debug
+        route_name = self.request.name or "[route not found]"
+        with self.doc.main:
+            self.doc.h1(f"⚠️ {self.title}").p(self.text)
+            # Show context details if available on the exception
+            context = getattr(self.exc, "context", None)
+            if context:
+                self._key_value_table(
+                    "Issue context", "exception-context", context
+                )
+
+            if not debug:
+                with self.doc.div(id="enduser"):
+                    self.doc.p(ENDUSER_TEXT).p.a("Front Page", href="/")
+                return
+            # Show additional details in debug mode,
+            # open by default for 500 errors
+            with self.doc.details(open=self.details_open, class_="smalltext"):
+                # Show extra details if available on the exception
+                extra = getattr(self.exc, "extra", None)
+                if extra:
+                    self._key_value_table(
+                        "Issue extra data", "exception-extra", extra
+                    )
+
+                self.doc.summary(
+                    "Details for developers (Sanic debug mode only)"
+                )
+                if self.exc:
+                    with self.doc.div(class_="exception-wrapper"):
+                        self.doc.h2(f"Exception in {route_name}:")
+                        self.doc(
+                            html_traceback(self.exc, include_js_css=False)
+                        )
+
+                self._key_value_table(
+                    f"{self.request.method} {self.request.path}",
+                    "request-headers",
+                    self.request.headers,
+                )
+
+    def _key_value_table(
+        self, title: str, table_id: str, data: Mapping[str, Any]
+    ) -> None:
+        with self.doc.div(class_="key-value-display"):
+            self.doc.h2(title)
+            with self.doc.dl(id=table_id, class_="key-value-table smalltext"):
+                for key, value in data.items():
+                    # Reading values may cause a new exception, so suppress it
+                    try:
+                        value = str(value)
+                    except Exception:
+                        value = E.em("Unable to display value")
+                    self.doc.dt.span(key, class_="nobr key").span(": ").dd(
+                        value
+                    )

sanic/pages/styles/BasePage.css

@@ -0,0 +1,146 @@
+/** BasePage **/
+
+:root {
+    --sanic: #ff0d68;
+    --sanic-yellow: #FFE900;
+    --sanic-background: #efeced;
+    --sanic-text: #121010;
+    --sanic-text-lighter: #756169;
+    --sanic-link: #ff0d68;
+    --sanic-block-background: #f7f4f6;
+    --sanic-block-text: #000;
+    --sanic-block-alt-text: #6b6468;
+    --sanic-header-background: #272325;
+    --sanic-header-border: #fff;
+    --sanic-header-text: #fff;
+    --sanic-highlight-background: var(--sanic-yellow);
+    --sanic-highlight-text: var(--sanic-text);
+    --sanic-tab-background: #f7f4f6;
+    --sanic-tab-shadow: #f7f6f6;
+    --sanic-tab-text: #222021;
+    --sanic-tracerite-var: var(--sanic-text);
+    --sanic-tracerite-val: #ff0d68;
+    --sanic-tracerite-type: #6d6a6b;
+}
+
+
+@media (prefers-color-scheme: dark) {
+    :root {
+        --sanic-text: #f7f4f6;
+        --sanic-background: #121010;
+        --sanic-block-background: #0f0d0e;
+        --sanic-block-text: #f7f4f6;
+        --sanic-header-background: #030203;
+        --sanic-header-border: #000;
+        --sanic-highlight-text: var(--sanic-background);
+        --sanic-tab-background: #292728;
+        --sanic-tab-shadow: #0f0d0e;
+        --sanic-tab-text: #aea7ab;
+    }
+}
+
+html {
+    font: 16px sans-serif;
+    background: var(--sanic-background);
+    color: var(--sanic-text);
+    scrollbar-gutter: stable;
+    overflow: hidden auto;
+}
+
+body {
+    margin: 0;
+    font-size: 1.25rem;
+    line-height: 125%;
+}
+
+body>* {
+    padding: 1rem 2vw;
+}
+
+@media (max-width: 1000px) {
+    body>* {
+        padding: 0.5rem 1.5vw;
+    }
+
+    html {
+        /* Scale everything by rem of 6px-16px by viewport width */
+        font-size: calc(6px + 10 * 100vw / 1000);
+    }
+}
+
+main {
+    /* Make sure the footer is closer to bottom */
+    min-height: 70vh;
+    /* Generous padding for readability */
+    padding: 1rem 2.5rem;
+}
+
+.smalltext {
+    font-size: 1.0rem;
+}
+
+.container {
+    min-width: 600px;
+    max-width: 1600px;
+}
+
+header {
+    background: var(--sanic-header-background);
+    color: var(--sanic-header-text);
+    border-bottom: 1px solid var(--sanic-header-border);
+    text-align: center;
+}
+
+footer {
+    text-align: center;
+    display: flex;
+    flex-direction: column;
+    font-size: 0.8rem;
+    margin: 2rem;
+    line-height: 1.5em;
+}
+
+h1 {
+    text-align: left;
+}
+
+a {
+    text-decoration: none;
+    color: var(--sanic-link);
+}
+
+a:hover,
+a:focus {
+    text-decoration: underline;
+    outline: none;
+}
+
+
+span.icon {
+    margin-right: 1rem;
+}
+
+#logo-simple {
+    height: 1.75rem;
+    padding: 0 0.25rem;
+}
+
+
+@media (prefers-color-scheme: dark) {
+    #logo-simple path:last-child {
+        fill: #e1e1e1;
+    }
+}
+
+#sanic pre,
+#sanic code {
+    font-family: "Fira Code",
+        "Source Code Pro",
+        Menlo,
+        Meslo,
+        Monaco,
+        Consolas,
+        Lucida Console,
+        monospace;
+    font-size: 0.8rem;
+}

sanic/pages/styles/DirectoryPage.css

@@ -0,0 +1,63 @@
+/** DirectoryPage **/
+#breadcrumbs>a:hover {
+    text-decoration: none;
+}
+
+#breadcrumbs>a .dir {
+    padding: 0 0.25em;
+}
+
+#breadcrumbs>a:first-child:hover::before,
+#breadcrumbs>a .dir:hover {
+    text-decoration: underline;
+}
+
+#breadcrumbs>a:first-child::before {
+    content: "🏠";
+}
+
+#breadcrumbs>a:last-child {
+    color: #ff0d68;
+}
+
+main a {
+    color: inherit;
+    font-weight: bold;
+}
+
+table.autoindex {
+    width: 100%;
+    font-family: monospace;
+    font-size: 1.25rem;
+}
+
+table.autoindex tr {
+    display: flex;
+}
+
+table.autoindex tr:hover {
+    background-color: #ddd;
+}
+
+table.autoindex td {
+    margin: 0 0.5rem;
+}
+
+table.autoindex td:first-child {
+    flex: 1;
+}
+
+table.autoindex td:nth-child(2) {
+    text-align: right;
+}
+
+table.autoindex td:last-child {
+    text-align: right;
+}
+
+
+@media (prefers-color-scheme: dark) {
+    table.autoindex tr:hover {
+        background-color: #222;
+    }
+}

sanic/pages/styles/ErrorPage.css

@@ -0,0 +1,108 @@
+/** ErrorPage **/
+#enduser {
+    max-width: 30em;
+    margin: 5em auto 5em auto;
+    text-align: justify;
+    /*text-justify: both;*/
+}
+
+#enduser a {
+    color: var(--sanic-blue);
+}
+
+#enduser p:last-child {
+    text-align: right;
+}
+
+summary {
+    margin-top: 3em;
+    color: var(--sanic-text-lighter);
+    cursor: pointer;
+}
+
+.tracerite {
+    --tracerite-var: var(--sanic-tracerite-var);
+    --tracerite-val: var(--sanic-tracerite-val);
+    --tracerite-type: var(--sanic-tracerite-type);
+    --tracerite-exception: var(--sanic);
+    --tracerite-highlight: var(--sanic-yellow);
+    --tracerite-tab: var(--sanic-tab-background);
+    --tracerite-tab-text: var(--sanic-tab-text);
+}
+
+.tracerite>h3 {
+    margin: 0.5rem 0 !important;
+}
+
+#sanic .tracerite .traceback-labels button {
+    font-size: 0.8rem;
+    line-height: 120%;
+    background: var(--tracerite-tab);
+    color: var(--tracerite-tab-text);
+    transition: 0.3s;
+    cursor: pointer;
+}
+
+.tracerite .traceback-labels {
+    padding-top: 5px;
+}
+
+.tracerite .traceback-labels button:hover {
+    filter: contrast(150%) brightness(120%) drop-shadow(0 -0 2px var(--sanic-tab-shadow));
+}
+
+#sanic .tracerite .tracerite-tooltip::before {
+    bottom: 1.75em;
+}
+
+#sanic .tracerite .traceback-details mark span {
+    background: var(--sanic-highlight-background);
+    color: var(--sanic-highlight-text);
+}
+
+header {
+    background: var(--sanic-header-background);
+}
+
+h2 {
+    font-size: 1.3rem;
+    color: var(--sanic-text);
+}
+
+.key-value-display,
+.exception-wrapper {
+    padding: 0.5rem;
+    margin-top: 1rem;
+}
+
+.key-value-display {
+    background-color: var(--sanic-block-background);
+    color: var(--sanic-block-text);
+}
+
+.key-value-display h2 {
+    margin-bottom: 0.2em;
+}
+
+dl.key-value-table {
+    width: 100%;
+    margin: 0;
+    display: grid;
+    grid-template-columns: 1fr 5fr;
+    grid-gap: .3em;
+    white-space: pre-wrap;
+}
+
+dl.key-value-table * {
+    margin: 0;
+}
+
+dl.key-value-table dt {
+    color: var(--sanic-block-alt-text);
+    word-break: break-word;
+}
+
+dl.key-value-table dd {
+    /* Better breaking for cookies header and such */
+    word-break: break-all;
+}

sanic/reloader_helpers.py

@@ -1,126 +0,0 @@
-import itertools
-import os
-import signal
-import subprocess
-import sys
-
-from time import sleep
-
-
-def _iter_module_files():
-    """This iterates over all relevant Python files.
-
-    It goes through all
-    loaded files from modules, all files in folders of already loaded modules
-    as well as all files reachable through a package.
-    """
-    # The list call is necessary on Python 3 in case the module
-    # dictionary modifies during iteration.
-    for module in list(sys.modules.values()):
-        if module is None:
-            continue
-        filename = getattr(module, "__file__", None)
-        if filename:
-            old = None
-            while not os.path.isfile(filename):
-                old = filename
-                filename = os.path.dirname(filename)
-                if filename == old:
-                    break
-            else:
-                if filename[-4:] in (".pyc", ".pyo"):
-                    filename = filename[:-1]
-                yield filename
-
-
-def _get_args_for_reloading():
-    """Returns the executable."""
-    main_module = sys.modules["__main__"]
-    mod_spec = getattr(main_module, "__spec__", None)
-    if sys.argv[0] in ("", "-c"):
-        raise RuntimeError(
-            f"Autoreloader cannot work with argv[0]={sys.argv[0]!r}"
-        )
-    if mod_spec:
-        # Parent exe was launched as a module rather than a script
-        return [sys.executable, "-m", mod_spec.name] + sys.argv[1:]
-    return [sys.executable] + sys.argv
-
-
-def restart_with_reloader(changed=None):
-    """Create a new process and a subprocess in it with the same arguments as
-    this one.
-    """
-    reloaded = ",".join(changed) if changed else ""
-    return subprocess.Popen(
-        _get_args_for_reloading(),
-        env={
-            **os.environ,
-            "SANIC_SERVER_RUNNING": "true",
-            "SANIC_RELOADER_PROCESS": "true",
-            "SANIC_RELOADED_FILES": reloaded,
-        },
-    )
-
-
-def _check_file(filename, mtimes):
-    need_reload = False
-
-    mtime = os.stat(filename).st_mtime
-    old_time = mtimes.get(filename)
-    if old_time is None:
-        mtimes[filename] = mtime
-    elif mtime > old_time:
-        mtimes[filename] = mtime
-        need_reload = True
-
-    return need_reload
-
-
-def watchdog(sleep_interval, reload_dirs):
-    """Watch project files, restart worker process if a change happened.
-
-    :param sleep_interval: interval in second.
-    :return: Nothing
-    """
-
-    def interrupt_self(*args):
-        raise KeyboardInterrupt
-
-    mtimes = {}
-    signal.signal(signal.SIGTERM, interrupt_self)
-    if os.name == "nt":
-        signal.signal(signal.SIGBREAK, interrupt_self)
-
-    worker_process = restart_with_reloader()
-
-    try:
-        while True:
-
-            changed = set()
-            for filename in itertools.chain(
-                _iter_module_files(),
-                *(d.glob("**/*") for d in reload_dirs),
-            ):
-                try:
-                    if _check_file(filename, mtimes):
-                        path = (
-                            filename
-                            if isinstance(filename, str)
-                            else filename.resolve()
-                        )
-                        changed.add(str(path))
-                except OSError:
-                    continue
-
-            if changed:
-                worker_process.terminate()
-                worker_process.wait()
-                worker_process = restart_with_reloader(changed)
-
-            sleep(sleep_interval)
-    except KeyboardInterrupt:
-        pass
-    finally:
-        worker_process.terminate()
-        worker_process.wait()

sanic/request/__init__.py

@@ -0,0 +1,11 @@
+from .form import File, parse_multipart_form
+from .parameters import RequestParameters
+from .types import Request
+
+
+__all__ = (
+    "File",
+    "parse_multipart_form",
+    "Request",
+    "RequestParameters",
+)

sanic/request/form.py

@@ -0,0 +1,110 @@
+from __future__ import annotations
+
+import email.utils
+import unicodedata
+
+from typing import NamedTuple
+from urllib.parse import unquote
+
+from sanic.headers import parse_content_header
+from sanic.log import logger
+
+from .parameters import RequestParameters
+
+
+class File(NamedTuple):
+    """
+    Model for defining a file. It is a ``namedtuple``, therefore you can
+    iterate over the object, or access the parameters by name.
+
+    :param type: The mimetype, defaults to text/plain
+    :param body: Bytes of the file
+    :param name: The filename
+    """
+
+    type: str
+    body: bytes
+    name: str
+
+
+def parse_multipart_form(body, boundary):
+    """
+    Parse a request body and returns fields and files
+
+    :param body: bytes request body
+    :param boundary: bytes multipart boundary
+    :return: fields (RequestParameters), files (RequestParameters)
+    """
+    files = {}
+    fields = {}
+
+    form_parts = body.split(boundary)
+    for form_part in form_parts[1:-1]:
+        file_name = None
+        content_type = "text/plain"
+        content_charset = "utf-8"
+        field_name = None
+        line_index = 2
+        line_end_index = 0
+        while not line_end_index == -1:
+            line_end_index = form_part.find(b"\r\n", line_index)
+            form_line = form_part[line_index:line_end_index].decode("utf-8")
+            line_index = line_end_index + 2
+
+            if not form_line:
+                break
+
+            colon_index = form_line.index(":")
+            idx = colon_index + 2
+            form_header_field = form_line[0:colon_index].lower()
+            form_header_value, form_parameters = parse_content_header(
+                form_line[idx:]
+            )
+
+            if form_header_field == "content-disposition":
+                field_name = form_parameters.get("name")
+                file_name = form_parameters.get("filename")
+
+                # non-ASCII filenames in RFC2231, "filename*" format
+                if file_name is None and form_parameters.get("filename*"):
+                    encoding, _, value = email.utils.decode_rfc2231(
+                        form_parameters["filename*"]
+                    )
+                    file_name = unquote(value, encoding=encoding)
+
+                # Normalize to NFC (Apple MacOS/iOS send NFD)
+                # Notes:
+                # - No effect for Windows, Linux or Android clients which
+                #   already send NFC
+                # - Python open() is tricky (creates files in NFC no matter
+                #   which form you use)
+                if file_name is not None:
+                    file_name = unicodedata.normalize("NFC", file_name)
+
+            elif form_header_field == "content-type":
+                content_type = form_header_value
+                content_charset = form_parameters.get("charset", "utf-8")
+
+        if field_name:
+            post_data = form_part[line_index:-4]
+            if file_name is None:
+                value = post_data.decode(content_charset)
+                if field_name in fields:
+                    fields[field_name].append(value)
+                else:
+                    fields[field_name] = [value]
+            else:
+                form_file = File(
+                    type=content_type, name=file_name, body=post_data
+                )
+                if field_name in files:
+                    files[field_name].append(form_file)
+                else:
+                    files[field_name] = [form_file]
+        else:
+            logger.debug(
+                "Form-data field does not have a 'name' parameter "
+                "in the Content-Disposition header"
+            )
+
+    return RequestParameters(fields), RequestParameters(files)

sanic/request/parameters.py

@@ -0,0 +1,22 @@
+from __future__ import annotations
+
+from typing import Any, Optional
+
+
+class RequestParameters(dict):
+    """
+    Hosts a dict with lists as values where get returns the first
+    value of the list and getlist returns the whole shebang
+    """
+
+    def get(self, name: str, default: Optional[Any] = None) -> Optional[Any]:
+        """Return the first value, either the default or actual"""
+        return super().get(name, [default])[0]
+
+    def getlist(
+        self, name: str, default: Optional[Any] = None
+    ) -> Optional[Any]:
+        """
+        Return the entire list
+        """
+        return super().get(name, default)

sanic/request/types.py

@@ -8,10 +8,10 @@ from typing import (
     DefaultDict,
     Dict,
     List,
-    NamedTuple,
     Optional,
     Tuple,
     Union,
+    cast,
 )
 
 from sanic_routing.route import Route
@@ -26,22 +26,26 @@ if TYPE_CHECKING:
     from sanic.server import ConnInfo
     from sanic.app import Sanic
 
-import email.utils
 import uuid
 
 from collections import defaultdict
-from http.cookies import SimpleCookie
 from types import SimpleNamespace
-from urllib.parse import parse_qs, parse_qsl, unquote, urlunparse
+from urllib.parse import parse_qs, parse_qsl, urlunparse
 
 from httptools import parse_url
 from httptools.parser.errors import HttpParserInvalidURLError
 
 from sanic.compat import CancelledErrors, Header
-from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE
+from sanic.constants import (
+    CACHEABLE_HTTP_METHODS,
+    DEFAULT_HTTP_CONTENT_TYPE,
+    IDEMPOTENT_HTTP_METHODS,
+    SAFE_HTTP_METHODS,
+)
+from sanic.cookies.request import CookieRequestParameters, parse_cookie
 from sanic.exceptions import BadRequest, BadURL, ServerError
 from sanic.headers import (
-    AcceptContainer,
+    AcceptList,
     Options,
     parse_accept,
     parse_content_header,
@@ -51,10 +55,13 @@ from sanic.headers import (
     parse_xforwarded,
 )
 from sanic.http import Stage
-from sanic.log import error_logger, logger
+from sanic.log import error_logger
 from sanic.models.protocol_types import TransportProtocol
 from sanic.response import BaseHTTPResponse, HTTPResponse
 
+from .form import parse_multipart_form
+from .parameters import RequestParameters
+
 
 try:
     from ujson import loads as json_loads  # type: ignore
@@ -62,25 +69,6 @@ except ImportError:
     from json import loads as json_loads  # type: ignore
 
 
-class RequestParameters(dict):
-    """
-    Hosts a dict with lists as values where get returns the first
-    value of the list and getlist returns the whole shebang
-    """
-
-    def get(self, name: str, default: Optional[Any] = None) -> Optional[Any]:
-        """Return the first value, either the default or actual"""
-        return super().get(name, [default])[0]
-
-    def getlist(
-        self, name: str, default: Optional[Any] = None
-    ) -> Optional[Any]:
-        """
-        Return the entire list
-        """
-        return super().get(name, default)
-
-
 class Request:
     """
     Properties of an HTTP request such as URL, headers, etc.
@@ -98,6 +86,8 @@ class Request:
         "_port",
         "_protocol",
         "_remote_addr",
+        "_request_middleware_started",
+        "_response_middleware_started",
         "_scheme",
         "_socket",
         "_stream_id",
@@ -112,6 +102,7 @@ class Request:
         "method",
         "parsed_accept",
         "parsed_args",
+        "parsed_cookies",
         "parsed_credentials",
         "parsed_files",
         "parsed_form",
@@ -121,7 +112,6 @@ class Request:
         "parsed_token",
         "raw_url",
         "responded",
-        "request_middleware_started",
         "route",
         "stream",
         "transport",
@@ -139,12 +129,12 @@ class Request:
         head: bytes = b"",
         stream_id: int = 0,
     ):
-
         self.raw_url = url_bytes
         try:
             self._parsed_url = parse_url(url_bytes)
         except HttpParserInvalidURLError:
-            raise BadURL(f"Bad URL: {url_bytes.decode()}")
+            url = url_bytes.decode(errors="backslashreplace")
+            raise BadURL(f"Bad URL: {url}")
         self._id: Optional[Union[uuid.UUID, str, int]] = None
         self._name: Optional[str] = None
         self._stream_id = stream_id
@@ -160,24 +150,25 @@ class Request:
         self.body = b""
         self.conn_info: Optional[ConnInfo] = None
         self.ctx = SimpleNamespace()
-        self.parsed_forwarded: Optional[Options] = None
+        self.parsed_accept: Optional[AcceptList] = None
-        self.parsed_accept: Optional[AcceptContainer] = None
-        self.parsed_credentials: Optional[Credentials] = None
-        self.parsed_json = None
-        self.parsed_form: Optional[RequestParameters] = None
-        self.parsed_files: Optional[RequestParameters] = None
-        self.parsed_token: Optional[str] = None
         self.parsed_args: DefaultDict[
             Tuple[bool, bool, str, str], RequestParameters
         ] = defaultdict(RequestParameters)
+        self.parsed_cookies: Optional[RequestParameters] = None
+        self.parsed_credentials: Optional[Credentials] = None
+        self.parsed_files: Optional[RequestParameters] = None
+        self.parsed_form: Optional[RequestParameters] = None
+        self.parsed_forwarded: Optional[Options] = None
+        self.parsed_json = None
         self.parsed_not_grouped_args: DefaultDict[
             Tuple[bool, bool, str, str], List[Tuple[str, str]]
         ] = defaultdict(list)
-        self.request_middleware_started = False
+        self.parsed_token: Optional[str] = None
+        self._request_middleware_started = False
+        self._response_middleware_started = False
         self.responded: bool = False
         self.route: Optional[Route] = None
         self.stream: Optional[Stream] = None
-        self._cookies: Optional[Dict[str, str]] = None
         self._match_info: Dict[str, Any] = {}
         self._protocol = None
 
@@ -188,7 +179,7 @@ class Request:
     @classmethod
     def get_current(cls) -> Request:
         """
-        Retrieve the currrent request object
+        Retrieve the current request object
 
         This implements `Context Variables
         <https://docs.python.org/3/library/contextvars.html>`_
@@ -319,9 +310,14 @@ class Request:
                 response = await response  # type: ignore
         # Run response middleware
         try:
-            response = await self.app._run_response_middleware(
+            middleware = (
-                self, response, request_name=self.name
+                self.route and self.route.extra.response_middleware
-            )
+            ) or self.app.response_middleware
+            if middleware and not self._response_middleware_started:
+                self._response_middleware_started = True
+                response = await self.app._run_response_middleware(
+                    self, response, middleware
+                )
         except CancelledErrors:
             raise
         except Exception:
@@ -477,14 +473,17 @@ class Request:
         return self.parsed_json
 
     @property
-    def accept(self) -> AcceptContainer:
+    def accept(self) -> AcceptList:
-        """
+        """Accepted response content types.
+
+        A convenience handler for easier RFC-compliant matching of MIME types,
+        parsed as a list that can match wildcards and includes */* by default.
+
         :return: The ``Accept`` header parsed
-        :rtype: AcceptContainer
+        :rtype: AcceptList
         """
         if self.parsed_accept is None:
-            accept_header = self.headers.getone("accept", "")
+            self.parsed_accept = parse_accept(self.headers.get("accept"))
-            self.parsed_accept = parse_accept(accept_header)
         return self.parsed_accept
 
     @property
@@ -706,24 +705,21 @@ class Request:
     default values.
     """
 
+    def get_cookies(self) -> RequestParameters:
+        cookie = self.headers.getone("cookie", "")
+        self.parsed_cookies = CookieRequestParameters(parse_cookie(cookie))
+        return self.parsed_cookies
+
     @property
-    def cookies(self) -> Dict[str, str]:
+    def cookies(self) -> RequestParameters:
         """
         :return: Incoming cookies on the request
         :rtype: Dict[str, str]
         """
 
-        if self._cookies is None:
+        if self.parsed_cookies is None:
-            cookie = self.headers.getone("cookie", None)
+            self.get_cookies()
-            if cookie is not None:
+        return cast(CookieRequestParameters, self.parsed_cookies)
-                cookies: SimpleCookie = SimpleCookie()
-                cookies.load(cookie)
-                self._cookies = {
-                    name: cookie.value for name, cookie in cookies.items()
-                }
-            else:
-                self._cookies = {}
-        return self._cookies
 
     @property
     def content_type(self) -> str:
@@ -975,90 +971,29 @@ class Request:
 
         return self.transport.scope
 
+    @property
+    def is_safe(self) -> bool:
+        """
+        :return: Whether the HTTP method is safe.
+            See https://datatracker.ietf.org/doc/html/rfc7231#section-4.2.1
+        :rtype: bool
+        """
+        return self.method in SAFE_HTTP_METHODS
 
-class File(NamedTuple):
+    @property
-    """
+    def is_idempotent(self) -> bool:
-    Model for defining a file. It is a ``namedtuple``, therefore you can
+        """
-    iterate over the object, or access the parameters by name.
+        :return: Whether the HTTP method is iempotent.
+            See https://datatracker.ietf.org/doc/html/rfc7231#section-4.2.2
+        :rtype: bool
+        """
+        return self.method in IDEMPOTENT_HTTP_METHODS
 
-    :param type: The mimetype, defaults to text/plain
+    @property
-    :param body: Bytes of the file
+    def is_cacheable(self) -> bool:
-    :param name: The filename
+        """
-    """
+        :return: Whether the HTTP method is cacheable.
-
+            See https://datatracker.ietf.org/doc/html/rfc7231#section-4.2.3
-    type: str
+        :rtype: bool
-    body: bytes
+        """
-    name: str
+        return self.method in CACHEABLE_HTTP_METHODS
-
-
-def parse_multipart_form(body, boundary):
-    """
-    Parse a request body and returns fields and files
-
-    :param body: bytes request body
-    :param boundary: bytes multipart boundary
-    :return: fields (RequestParameters), files (RequestParameters)
-    """
-    files = RequestParameters()
-    fields = RequestParameters()
-
-    form_parts = body.split(boundary)
-    for form_part in form_parts[1:-1]:
-        file_name = None
-        content_type = "text/plain"
-        content_charset = "utf-8"
-        field_name = None
-        line_index = 2
-        line_end_index = 0
-        while not line_end_index == -1:
-            line_end_index = form_part.find(b"\r\n", line_index)
-            form_line = form_part[line_index:line_end_index].decode("utf-8")
-            line_index = line_end_index + 2
-
-            if not form_line:
-                break
-
-            colon_index = form_line.index(":")
-            idx = colon_index + 2
-            form_header_field = form_line[0:colon_index].lower()
-            form_header_value, form_parameters = parse_content_header(
-                form_line[idx:]
-            )
-
-            if form_header_field == "content-disposition":
-                field_name = form_parameters.get("name")
-                file_name = form_parameters.get("filename")
-
-                # non-ASCII filenames in RFC2231, "filename*" format
-                if file_name is None and form_parameters.get("filename*"):
-                    encoding, _, value = email.utils.decode_rfc2231(
-                        form_parameters["filename*"]
-                    )
-                    file_name = unquote(value, encoding=encoding)
-            elif form_header_field == "content-type":
-                content_type = form_header_value
-                content_charset = form_parameters.get("charset", "utf-8")
-
-        if field_name:
-            post_data = form_part[line_index:-4]
-            if file_name is None:
-                value = post_data.decode(content_charset)
-                if field_name in fields:
-                    fields[field_name].append(value)
-                else:
-                    fields[field_name] = [value]
-            else:
-                form_file = File(
-                    type=content_type, name=file_name, body=post_data
-                )
-                if field_name in files:
-                    files[field_name].append(form_file)
-                else:
-                    files[field_name] = [form_file]
-        else:
-            logger.debug(
-                "Form-data field does not have a 'name' parameter "
-                "in the Content-Disposition header"
-            )
-
-    return fields, files

sanic/response/__init__.py

@@ -0,0 +1,36 @@
+from .convenience import (
+    empty,
+    file,
+    file_stream,
+    html,
+    json,
+    raw,
+    redirect,
+    text,
+    validate_file,
+)
+from .types import (
+    BaseHTTPResponse,
+    HTTPResponse,
+    JSONResponse,
+    ResponseStream,
+    json_dumps,
+)
+
+
+__all__ = (
+    "BaseHTTPResponse",
+    "HTTPResponse",
+    "JSONResponse",
+    "ResponseStream",
+    "empty",
+    "json",
+    "text",
+    "raw",
+    "html",
+    "validate_file",
+    "file",
+    "redirect",
+    "file_stream",
+    "json_dumps",
+)

sanic/response/convenience.py

@@ -1,216 +1,25 @@
 from __future__ import annotations
 
-from datetime import datetime
+from datetime import datetime, timezone
-from email.utils import formatdate
+from email.utils import formatdate, parsedate_to_datetime
-from functools import partial
 from mimetypes import guess_type
 from os import path
 from pathlib import PurePath
 from time import time
-from typing import (
+from typing import Any, AnyStr, Callable, Dict, Optional, Union
-    TYPE_CHECKING,
-    Any,
-    AnyStr,
-    Callable,
-    Coroutine,
-    Dict,
-    Iterator,
-    Optional,
-    Tuple,
-    TypeVar,
-    Union,
-)
 from urllib.parse import quote_plus
 
 from sanic.compat import Header, open_async, stat_async
 from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE
-from sanic.cookies import CookieJar
+from sanic.helpers import Default, _default
-from sanic.exceptions import SanicException, ServerError
+from sanic.log import logger
-from sanic.helpers import (
-    Default,
-    _default,
-    has_message_body,
-    remove_entity_headers,
-)
-from sanic.http import Http
 from sanic.models.protocol_types import HTMLProtocol, Range
 
-
+from .types import HTTPResponse, JSONResponse, ResponseStream
-if TYPE_CHECKING:
-    from sanic.asgi import ASGIApp
-    from sanic.http.http3 import HTTPReceiver
-    from sanic.request import Request
-else:
-    Request = TypeVar("Request")
-
-
-try:
-    from ujson import dumps as json_dumps
-except ImportError:
-    # This is done in order to ensure that the JSON response is
-    # kept consistent across both ujson and inbuilt json usage.
-    from json import dumps
-
-    json_dumps = partial(dumps, separators=(",", ":"))
-
-
-class BaseHTTPResponse:
-    """
-    The base class for all HTTP Responses
-    """
-
-    __slots__ = (
-        "asgi",
-        "body",
-        "content_type",
-        "stream",
-        "status",
-        "headers",
-        "_cookies",
-    )
-
-    _dumps = json_dumps
-
-    def __init__(self):
-        self.asgi: bool = False
-        self.body: Optional[bytes] = None
-        self.content_type: Optional[str] = None
-        self.stream: Optional[Union[Http, ASGIApp, HTTPReceiver]] = None
-        self.status: int = None
-        self.headers = Header({})
-        self._cookies: Optional[CookieJar] = None
-
-    def __repr__(self):
-        class_name = self.__class__.__name__
-        return f"<{class_name}: {self.status} {self.content_type}>"
-
-    def _encode_body(self, data: Optional[AnyStr]):
-        if data is None:
-            return b""
-        return (
-            data.encode() if hasattr(data, "encode") else data  # type: ignore
-        )
-
-    @property
-    def cookies(self) -> CookieJar:
-        """
-        The response cookies. Cookies should be set and written as follows:
-
-        .. code-block:: python
-
-                response.cookies["test"] = "It worked!"
-                response.cookies["test"]["domain"] = ".yummy-yummy-cookie.com"
-                response.cookies["test"]["httponly"] = True
-
-        `See user guide re: cookies
-        <https://sanicframework.org/guide/basics/cookies.html>`__
-
-        :return: the cookie jar
-        :rtype: CookieJar
-        """
-        if self._cookies is None:
-            self._cookies = CookieJar(self.headers)
-        return self._cookies
-
-    @property
-    def processed_headers(self) -> Iterator[Tuple[bytes, bytes]]:
-        """
-        Obtain a list of header tuples encoded in bytes for sending.
-
-        Add and remove headers based on status and content_type.
-
-        :return: response headers
-        :rtype: Tuple[Tuple[bytes, bytes], ...]
-        """
-        # TODO: Make a blacklist set of header names and then filter with that
-        if self.status in (304, 412):  # Not Modified, Precondition Failed
-            self.headers = remove_entity_headers(self.headers)
-        if has_message_body(self.status):
-            self.headers.setdefault("content-type", self.content_type)
-        # Encode headers into bytes
-        return (
-            (name.encode("ascii"), f"{value}".encode(errors="surrogateescape"))
-            for name, value in self.headers.items()
-        )
-
-    async def send(
-        self,
-        data: Optional[AnyStr] = None,
-        end_stream: Optional[bool] = None,
-    ) -> None:
-        """
-        Send any pending response headers and the given data as body.
-
-        :param data: str or bytes to be written
-        :param end_stream: whether to close the stream after this block
-        """
-        if data is None and end_stream is None:
-            end_stream = True
-        if self.stream is None:
-            raise SanicException(
-                "No stream is connected to the response object instance."
-            )
-        if self.stream.send is None:
-            if end_stream and not data:
-                return
-            raise ServerError(
-                "Response stream was ended, no more response data is "
-                "allowed to be sent."
-            )
-        data = (
-            data.encode()  # type: ignore
-            if hasattr(data, "encode")
-            else data or b""
-        )
-        await self.stream.send(
-            data,  # type: ignore
-            end_stream=end_stream or False,
-        )
-
-
-class HTTPResponse(BaseHTTPResponse):
-    """
-    HTTP response to be sent back to the client.
-
-    :param body: the body content to be returned
-    :type body: Optional[bytes]
-    :param status: HTTP response number. **Default=200**
-    :type status: int
-    :param headers: headers to be returned
-    :type headers: Optional;
-    :param content_type: content type to be returned (as a header)
-    :type content_type: Optional[str]
-    """
-
-    __slots__ = ()
-
-    def __init__(
-        self,
-        body: Optional[AnyStr] = None,
-        status: int = 200,
-        headers: Optional[Union[Header, Dict[str, str]]] = None,
-        content_type: Optional[str] = None,
-    ):
-        super().__init__()
-
-        self.content_type: Optional[str] = content_type
-        self.body = self._encode_body(body)
-        self.status = status
-        self.headers = Header(headers or {})
-        self._cookies = None
-
-    async def eof(self):
-        await self.send("", True)
-
-    async def __aenter__(self):
-        return self.send
-
-    async def __aexit__(self, *_):
-        await self.eof()
 
 
 def empty(
-    status=204, headers: Optional[Dict[str, str]] = None
+    status: int = 204, headers: Optional[Dict[str, str]] = None
 ) -> HTTPResponse:
     """
     Returns an empty response to the client.
@@ -227,8 +36,8 @@ def json(
     headers: Optional[Dict[str, str]] = None,
     content_type: str = "application/json",
     dumps: Optional[Callable[..., str]] = None,
-    **kwargs,
+    **kwargs: Any,
-) -> HTTPResponse:
+) -> JSONResponse:
     """
     Returns response object with body in json format.
 
@@ -237,13 +46,14 @@ def json(
     :param headers: Custom Headers.
     :param kwargs: Remaining arguments that are passed to the json encoder.
     """
-    if not dumps:
+
-        dumps = BaseHTTPResponse._dumps
+    return JSONResponse(
-    return HTTPResponse(
+        body,
-        dumps(body, **kwargs),
-        headers=headers,
         status=status,
+        headers=headers,
         content_type=content_type,
+        dumps=dumps,
+        **kwargs,
     )
 
 
@@ -319,9 +129,53 @@ def html(
     )
 
 
+async def validate_file(
+    request_headers: Header, last_modified: Union[datetime, float, int]
+):
+    try:
+        if_modified_since = request_headers.getone("If-Modified-Since")
+    except KeyError:
+        return
+    try:
+        if_modified_since = parsedate_to_datetime(if_modified_since)
+    except (TypeError, ValueError):
+        logger.warning(
+            "Ignorning invalid If-Modified-Since header received: " "'%s'",
+            if_modified_since,
+        )
+        return
+    if not isinstance(last_modified, datetime):
+        last_modified = datetime.fromtimestamp(
+            float(last_modified), tz=timezone.utc
+        ).replace(microsecond=0)
+
+    if (
+        last_modified.utcoffset() is None
+        and if_modified_since.utcoffset() is not None
+    ):
+        logger.warning(
+            "Cannot compare tz-aware and tz-naive datetimes. To avoid "
+            "this conflict Sanic is converting last_modified to UTC."
+        )
+        last_modified.replace(tzinfo=timezone.utc)
+    elif (
+        last_modified.utcoffset() is not None
+        and if_modified_since.utcoffset() is None
+    ):
+        logger.warning(
+            "Cannot compare tz-aware and tz-naive datetimes. To avoid "
+            "this conflict Sanic is converting if_modified_since to UTC."
+        )
+        if_modified_since.replace(tzinfo=timezone.utc)
+    if last_modified.timestamp() <= if_modified_since.timestamp():
+        return HTTPResponse(status=304)
+
+
 async def file(
     location: Union[str, PurePath],
     status: int = 200,
+    request_headers: Optional[Header] = None,
+    validate_when_requested: bool = True,
     mime_type: Optional[str] = None,
     headers: Optional[Dict[str, str]] = None,
     filename: Optional[str] = None,
@@ -331,7 +185,12 @@ async def file(
     _range: Optional[Range] = None,
 ) -> HTTPResponse:
     """Return a response object with file data.
-
+    :param status: HTTP response code. Won't enforce the passed in
+        status if only a part of the content will be sent (206)
+        or file is being validated (304).
+    :param request_headers: The request headers.
+    :param validate_when_requested: If True, will validate the
+        file when requested.
     :param location: Location of file on system.
     :param mime_type: Specific mime_type.
     :param headers: Custom Headers.
@@ -341,11 +200,6 @@ async def file(
     :param no_store: Any cache should not store this response.
     :param _range:
     """
-    headers = headers or {}
-    if filename:
-        headers.setdefault(
-            "Content-Disposition", f'attachment; filename="{filename}"'
-        )
 
     if isinstance(last_modified, datetime):
         last_modified = last_modified.replace(microsecond=0).timestamp()
@@ -353,9 +207,24 @@ async def file(
         stat = await stat_async(location)
         last_modified = stat.st_mtime
 
+    if (
+        validate_when_requested
+        and request_headers is not None
+        and last_modified
+    ):
+        response = await validate_file(request_headers, last_modified)
+        if response:
+            return response
+
+    headers = headers or {}
     if last_modified:
         headers.setdefault(
-            "last-modified", formatdate(last_modified, usegmt=True)
+            "Last-Modified", formatdate(last_modified, usegmt=True)
+        )
+
+    if filename:
+        headers.setdefault(
+            "Content-Disposition", f'attachment; filename="{filename}"'
         )
 
     if no_store:
@@ -424,80 +293,6 @@ def redirect(
     )
 
 
-class ResponseStream:
-    """
-    ResponseStream is a compat layer to bridge the gap after the deprecation
-    of StreamingHTTPResponse. It will be removed when:
-    - file_stream is moved to new style streaming
-    - file and file_stream are combined into a single API
-    """
-
-    __slots__ = (
-        "_cookies",
-        "content_type",
-        "headers",
-        "request",
-        "response",
-        "status",
-        "streaming_fn",
-    )
-
-    def __init__(
-        self,
-        streaming_fn: Callable[
-            [Union[BaseHTTPResponse, ResponseStream]],
-            Coroutine[Any, Any, None],
-        ],
-        status: int = 200,
-        headers: Optional[Union[Header, Dict[str, str]]] = None,
-        content_type: Optional[str] = None,
-    ):
-        self.streaming_fn = streaming_fn
-        self.status = status
-        self.headers = headers or Header()
-        self.content_type = content_type
-        self.request: Optional[Request] = None
-        self._cookies: Optional[CookieJar] = None
-
-    async def write(self, message: str):
-        await self.response.send(message)
-
-    async def stream(self) -> HTTPResponse:
-        if not self.request:
-            raise ServerError("Attempted response to unknown request")
-        self.response = await self.request.respond(
-            headers=self.headers,
-            status=self.status,
-            content_type=self.content_type,
-        )
-        await self.streaming_fn(self)
-        return self.response
-
-    async def eof(self) -> None:
-        await self.response.eof()
-
-    @property
-    def cookies(self) -> CookieJar:
-        if self._cookies is None:
-            self._cookies = CookieJar(self.headers)
-        return self._cookies
-
-    @property
-    def processed_headers(self):
-        return self.response.processed_headers
-
-    @property
-    def body(self):
-        return self.response.body
-
-    def __call__(self, request: Request) -> ResponseStream:
-        self.request = request
-        return self
-
-    def __await__(self):
-        return self.stream().__await__()
-
-
 async def file_stream(
     location: Union[str, PurePath],
     status: int = 200,

sanic/response/types.py

@@ -0,0 +1,568 @@
+from __future__ import annotations
+
+from datetime import datetime
+from functools import partial
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    AnyStr,
+    Callable,
+    Coroutine,
+    Dict,
+    Iterator,
+    Optional,
+    Tuple,
+    TypeVar,
+    Union,
+)
+
+from sanic.compat import Header
+from sanic.cookies import CookieJar
+from sanic.cookies.response import Cookie, SameSite
+from sanic.exceptions import SanicException, ServerError
+from sanic.helpers import (
+    Default,
+    _default,
+    has_message_body,
+    remove_entity_headers,
+)
+from sanic.http import Http
+
+
+if TYPE_CHECKING:
+    from sanic.asgi import ASGIApp
+    from sanic.http.http3 import HTTPReceiver
+    from sanic.request import Request
+else:
+    Request = TypeVar("Request")
+
+
+try:
+    from ujson import dumps as json_dumps
+except ImportError:
+    # This is done in order to ensure that the JSON response is
+    # kept consistent across both ujson and inbuilt json usage.
+    from json import dumps
+
+    json_dumps = partial(dumps, separators=(",", ":"))
+
+
+class BaseHTTPResponse:
+    """
+    The base class for all HTTP Responses
+    """
+
+    __slots__ = (
+        "asgi",
+        "body",
+        "content_type",
+        "stream",
+        "status",
+        "headers",
+        "_cookies",
+    )
+
+    _dumps = json_dumps
+
+    def __init__(self):
+        self.asgi: bool = False
+        self.body: Optional[bytes] = None
+        self.content_type: Optional[str] = None
+        self.stream: Optional[Union[Http, ASGIApp, HTTPReceiver]] = None
+        self.status: int = None
+        self.headers = Header({})
+        self._cookies: Optional[CookieJar] = None
+
+    def __repr__(self):
+        class_name = self.__class__.__name__
+        return f"<{class_name}: {self.status} {self.content_type}>"
+
+    def _encode_body(self, data: Optional[AnyStr]):
+        if data is None:
+            return b""
+        return (
+            data.encode() if hasattr(data, "encode") else data  # type: ignore
+        )
+
+    @property
+    def cookies(self) -> CookieJar:
+        """
+        The response cookies. Cookies should be set and written as follows:
+
+        .. code-block:: python
+
+                response.cookies["test"] = "It worked!"
+                response.cookies["test"]["domain"] = ".yummy-yummy-cookie.com"
+                response.cookies["test"]["httponly"] = True
+
+        `See user guide re: cookies
+        <https://sanic.dev/en/guide/basics/cookies.html>`
+
+        :return: the cookie jar
+        :rtype: CookieJar
+        """
+        if self._cookies is None:
+            self._cookies = CookieJar(self.headers)
+        return self._cookies
+
+    @property
+    def processed_headers(self) -> Iterator[Tuple[bytes, bytes]]:
+        """
+        Obtain a list of header tuples encoded in bytes for sending.
+
+        Add and remove headers based on status and content_type.
+
+        :return: response headers
+        :rtype: Tuple[Tuple[bytes, bytes], ...]
+        """
+        # TODO: Make a blacklist set of header names and then filter with that
+        if self.status in (304, 412):  # Not Modified, Precondition Failed
+            self.headers = remove_entity_headers(self.headers)
+        if has_message_body(self.status):
+            self.headers.setdefault("content-type", self.content_type)
+        # Encode headers into bytes
+        return (
+            (name.encode("ascii"), f"{value}".encode(errors="surrogateescape"))
+            for name, value in self.headers.items()
+        )
+
+    async def send(
+        self,
+        data: Optional[AnyStr] = None,
+        end_stream: Optional[bool] = None,
+    ) -> None:
+        """
+        Send any pending response headers and the given data as body.
+
+        :param data: str or bytes to be written
+        :param end_stream: whether to close the stream after this block
+        """
+        if data is None and end_stream is None:
+            end_stream = True
+        if self.stream is None:
+            raise SanicException(
+                "No stream is connected to the response object instance."
+            )
+        if self.stream.send is None:
+            if end_stream and not data:
+                return
+            raise ServerError(
+                "Response stream was ended, no more response data is "
+                "allowed to be sent."
+            )
+        data = (
+            data.encode()  # type: ignore
+            if hasattr(data, "encode")
+            else data or b""
+        )
+        await self.stream.send(
+            data,  # type: ignore
+            end_stream=end_stream or False,
+        )
+
+    def add_cookie(
+        self,
+        key: str,
+        value: str,
+        *,
+        path: str = "/",
+        domain: Optional[str] = None,
+        secure: bool = True,
+        max_age: Optional[int] = None,
+        expires: Optional[datetime] = None,
+        httponly: bool = False,
+        samesite: Optional[SameSite] = "Lax",
+        partitioned: bool = False,
+        comment: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ) -> Cookie:
+        """
+        Add a cookie to the CookieJar
+
+        :param key: Key of the cookie
+        :type key: str
+        :param value: Value of the cookie
+        :type value: str
+        :param path: Path of the cookie, defaults to None
+        :type path: Optional[str], optional
+        :param domain: Domain of the cookie, defaults to None
+        :type domain: Optional[str], optional
+        :param secure: Whether to set it as a secure cookie, defaults to True
+        :type secure: bool
+        :param max_age: Max age of the cookie in seconds; if set to 0 a
+            browser should delete it, defaults to None
+        :type max_age: Optional[int], optional
+        :param expires: When the cookie expires; if set to None browsers
+            should set it as a session cookie, defaults to None
+        :type expires: Optional[datetime], optional
+        :param httponly: Whether to set it as HTTP only, defaults to False
+        :type httponly: bool
+        :param samesite: How to set the samesite property, should be
+            strict, lax or none (case insensitive), defaults to Lax
+        :type samesite: Optional[SameSite], optional
+        :param partitioned: Whether to set it as partitioned, defaults to False
+        :type partitioned: bool
+        :param comment: A cookie comment, defaults to None
+        :type comment: Optional[str], optional
+        :param host_prefix: Whether to add __Host- as a prefix to the key.
+            This requires that path="/", domain=None, and secure=True,
+            defaults to False
+        :type host_prefix: bool
+        :param secure_prefix: Whether to add __Secure- as a prefix to the key.
+            This requires that secure=True, defaults to False
+        :type secure_prefix: bool
+        :return: The instance of the created cookie
+        :rtype: Cookie
+        """
+        return self.cookies.add_cookie(
+            key=key,
+            value=value,
+            path=path,
+            domain=domain,
+            secure=secure,
+            max_age=max_age,
+            expires=expires,
+            httponly=httponly,
+            samesite=samesite,
+            partitioned=partitioned,
+            comment=comment,
+            host_prefix=host_prefix,
+            secure_prefix=secure_prefix,
+        )
+
+    def delete_cookie(
+        self,
+        key: str,
+        *,
+        path: str = "/",
+        domain: Optional[str] = None,
+        host_prefix: bool = False,
+        secure_prefix: bool = False,
+    ) -> None:
+        """
+        Delete a cookie
+
+        This will effectively set it as Max-Age: 0, which a browser should
+        interpret it to mean: "delete the cookie".
+
+        Since it is a browser/client implementation, your results may vary
+        depending upon which client is being used.
+
+        :param key: The key to be deleted
+        :type key: str
+        :param path: Path of the cookie, defaults to None
+        :type path: Optional[str], optional
+        :param domain: Domain of the cookie, defaults to None
+        :type domain: Optional[str], optional
+        :param host_prefix: Whether to add __Host- as a prefix to the key.
+            This requires that path="/", domain=None, and secure=True,
+            defaults to False
+        :type host_prefix: bool
+        :param secure_prefix: Whether to add __Secure- as a prefix to the key.
+            This requires that secure=True, defaults to False
+        :type secure_prefix: bool
+        """
+        self.cookies.delete_cookie(
+            key=key,
+            path=path,
+            domain=domain,
+            host_prefix=host_prefix,
+            secure_prefix=secure_prefix,
+        )
+
+
+class HTTPResponse(BaseHTTPResponse):
+    """
+    HTTP response to be sent back to the client.
+
+    :param body: the body content to be returned
+    :type body: Optional[bytes]
+    :param status: HTTP response number. **Default=200**
+    :type status: int
+    :param headers: headers to be returned
+    :type headers: Optional;
+    :param content_type: content type to be returned (as a header)
+    :type content_type: Optional[str]
+    """
+
+    __slots__ = ()
+
+    def __init__(
+        self,
+        body: Optional[Any] = None,
+        status: int = 200,
+        headers: Optional[Union[Header, Dict[str, str]]] = None,
+        content_type: Optional[str] = None,
+    ):
+        super().__init__()
+
+        self.content_type: Optional[str] = content_type
+        self.body = self._encode_body(body)
+        self.status = status
+        self.headers = Header(headers or {})
+        self._cookies = None
+
+    async def eof(self):
+        await self.send("", True)
+
+    async def __aenter__(self):
+        return self.send
+
+    async def __aexit__(self, *_):
+        await self.eof()
+
+
+class JSONResponse(HTTPResponse):
+    """
+    HTTP response to be sent back to the client, when the response
+    is of json type. Offers several utilities to manipulate common
+    json data types.
+
+    :param body: the body content to be returned
+    :type body: Optional[Any]
+    :param status: HTTP response number. **Default=200**
+    :type status: int
+    :param headers: headers to be returned
+    :type headers: Optional
+    :param content_type: content type to be returned (as a header)
+    :type content_type: Optional[str]
+    :param dumps: json.dumps function to use
+    :type dumps: Optional[Callable]
+    """
+
+    __slots__ = (
+        "_body",
+        "_body_manually_set",
+        "_initialized",
+        "_raw_body",
+        "_use_dumps",
+        "_use_dumps_kwargs",
+    )
+
+    def __init__(
+        self,
+        body: Optional[Any] = None,
+        status: int = 200,
+        headers: Optional[Union[Header, Dict[str, str]]] = None,
+        content_type: Optional[str] = None,
+        dumps: Optional[Callable[..., str]] = None,
+        **kwargs: Any,
+    ):
+        self._initialized = False
+        self._body_manually_set = False
+
+        self._use_dumps = dumps or BaseHTTPResponse._dumps
+        self._use_dumps_kwargs = kwargs
+
+        self._raw_body = body
+
+        super().__init__(
+            self._encode_body(self._use_dumps(body, **self._use_dumps_kwargs)),
+            headers=headers,
+            status=status,
+            content_type=content_type,
+        )
+
+        self._initialized = True
+
+    def _check_body_not_manually_set(self):
+        if self._body_manually_set:
+            raise SanicException(
+                "Cannot use raw_body after body has been manually set."
+            )
+
+    @property
+    def raw_body(self) -> Optional[Any]:
+        """Returns the raw body, as long as body has not been manually
+        set previously.
+
+        NOTE: This object should not be mutated, as it will not be
+        reflected in the response body. If you need to mutate the
+        response body, consider using one of the provided methods in
+        this class or alternatively call set_body() with the mutated
+        object afterwards or set the raw_body property to it.
+        """
+
+        self._check_body_not_manually_set()
+        return self._raw_body
+
+    @raw_body.setter
+    def raw_body(self, value: Any):
+        self._body_manually_set = False
+        self._body = self._encode_body(
+            self._use_dumps(value, **self._use_dumps_kwargs)
+        )
+        self._raw_body = value
+
+    @property  # type: ignore
+    def body(self) -> Optional[bytes]:  # type: ignore
+        return self._body
+
+    @body.setter
+    def body(self, value: Optional[bytes]):
+        self._body = value
+        if not self._initialized:
+            return
+        self._body_manually_set = True
+
+    def set_body(
+        self,
+        body: Any,
+        dumps: Optional[Callable[..., str]] = None,
+        **dumps_kwargs: Any,
+    ) -> None:
+        """Sets a new response body using the given dumps function
+        and kwargs, or falling back to the defaults given when
+        creating the object if none are specified.
+        """
+
+        self._body_manually_set = False
+        self._raw_body = body
+
+        use_dumps = dumps or self._use_dumps
+        use_dumps_kwargs = dumps_kwargs if dumps else self._use_dumps_kwargs
+
+        self._body = self._encode_body(use_dumps(body, **use_dumps_kwargs))
+
+    def append(self, value: Any) -> None:
+        """Appends a value to the response raw_body, ensuring that
+        body is kept up to date. This can only be used if raw_body
+        is a list.
+        """
+
+        self._check_body_not_manually_set()
+
+        if not isinstance(self._raw_body, list):
+            raise SanicException("Cannot append to a non-list object.")
+
+        self._raw_body.append(value)
+        self.raw_body = self._raw_body
+
+    def extend(self, value: Any) -> None:
+        """Extends the response's raw_body with the given values, ensuring
+        that body is kept up to date. This can only be used if raw_body is
+        a list.
+        """
+
+        self._check_body_not_manually_set()
+
+        if not isinstance(self._raw_body, list):
+            raise SanicException("Cannot extend a non-list object.")
+
+        self._raw_body.extend(value)
+        self.raw_body = self._raw_body
+
+    def update(self, *args, **kwargs) -> None:
+        """Updates the response's raw_body with the given values, ensuring
+        that body is kept up to date. This can only be used if raw_body is
+        a dict.
+        """
+
+        self._check_body_not_manually_set()
+
+        if not isinstance(self._raw_body, dict):
+            raise SanicException("Cannot update a non-dict object.")
+
+        self._raw_body.update(*args, **kwargs)
+        self.raw_body = self._raw_body
+
+    def pop(self, key: Any, default: Any = _default) -> Any:
+        """Pops a key from the response's raw_body, ensuring that body is
+        kept up to date. This can only be used if raw_body is a dict or a
+        list.
+        """
+
+        self._check_body_not_manually_set()
+
+        if not isinstance(self._raw_body, (list, dict)):
+            raise SanicException(
+                "Cannot pop from a non-list and non-dict object."
+            )
+
+        if isinstance(default, Default):
+            value = self._raw_body.pop(key)
+        elif isinstance(self._raw_body, list):
+            raise TypeError("pop doesn't accept a default argument for lists")
+        else:
+            value = self._raw_body.pop(key, default)
+
+        self.raw_body = self._raw_body
+
+        return value
+
+
+class ResponseStream:
+    """
+    ResponseStream is a compat layer to bridge the gap after the deprecation
+    of StreamingHTTPResponse. It will be removed when:
+    - file_stream is moved to new style streaming
+    - file and file_stream are combined into a single API
+    """
+
+    __slots__ = (
+        "_cookies",
+        "content_type",
+        "headers",
+        "request",
+        "response",
+        "status",
+        "streaming_fn",
+    )
+
+    def __init__(
+        self,
+        streaming_fn: Callable[
+            [Union[BaseHTTPResponse, ResponseStream]],
+            Coroutine[Any, Any, None],
+        ],
+        status: int = 200,
+        headers: Optional[Union[Header, Dict[str, str]]] = None,
+        content_type: Optional[str] = None,
+    ):
+        if not isinstance(headers, Header):
+            headers = Header(headers)
+        self.streaming_fn = streaming_fn
+        self.status = status
+        self.headers = headers or Header()
+        self.content_type = content_type
+        self.request: Optional[Request] = None
+        self._cookies: Optional[CookieJar] = None
+
+    async def write(self, message: str):
+        await self.response.send(message)
+
+    async def stream(self) -> HTTPResponse:
+        if not self.request:
+            raise ServerError("Attempted response to unknown request")
+        self.response = await self.request.respond(
+            headers=self.headers,
+            status=self.status,
+            content_type=self.content_type,
+        )
+        await self.streaming_fn(self)
+        return self.response
+
+    async def eof(self) -> None:
+        await self.response.eof()
+
+    @property
+    def cookies(self) -> CookieJar:
+        if self._cookies is None:
+            self._cookies = CookieJar(self.headers)
+        return self._cookies
+
+    @property
+    def processed_headers(self):
+        return self.response.processed_headers
+
+    @property
+    def body(self):
+        return self.response.body
+
+    def __call__(self, request: Request) -> ResponseStream:
+        self.request = request
+        return self
+
+    def __await__(self):
+        return self.stream().__await__()

sanic/router.py

@@ -39,13 +39,15 @@ class Router(BaseRouter):
                 extra={"host": host} if host else None,
             )
         except RoutingNotFound as e:
-            raise NotFound("Requested URL {} not found".format(e.path))
+            raise NotFound(f"Requested URL {e.path} not found") from None
         except NoMethod as e:
             raise MethodNotAllowed(
-                "Method {} not allowed for URL {}".format(method, path),
+                f"Method {method} not allowed for URL {path}",
                 method=method,
-                allowed_methods=e.allowed_methods,
+                allowed_methods=tuple(e.allowed_methods)
-            )
+                if e.allowed_methods
+                else None,
+            ) from None
 
     @lru_cache(maxsize=ROUTER_CACHE_SIZE)
     def get(  # type: ignore
@@ -61,6 +63,7 @@ class Router(BaseRouter):
             correct response
         :rtype: Tuple[ Route, RouteHandler, Dict[str, Any]]
         """
+        __tracebackhide__ = True
         return self._get(path, method, host)
 
     def add(  # type: ignore
@@ -132,15 +135,24 @@ class Router(BaseRouter):
             if host:
                 params.update({"requirements": {"host": host}})
 
+            ident = name
+            if len(hosts) > 1:
+                ident = (
+                    f"{name}_{host.replace('.', '_')}"
+                    if name
+                    else "__unnamed__"
+                )
+
             route = super().add(**params)  # type: ignore
-            route.ctx.ignore_body = ignore_body
+            route.extra.ident = ident
-            route.ctx.stream = stream
+            route.extra.ignore_body = ignore_body
-            route.ctx.hosts = hosts
+            route.extra.stream = stream
-            route.ctx.static = static
+            route.extra.hosts = hosts
-            route.ctx.error_format = error_format
+            route.extra.static = static
+            route.extra.error_format = error_format
 
             if error_format:
-                check_error_format(route.ctx.error_format)
+                check_error_format(route.extra.error_format)
 
             routes.append(route)
 

sanic/server/__init__.py

@@ -2,7 +2,7 @@ from sanic.models.server_types import ConnInfo, Signal
 from sanic.server.async_server import AsyncioServer
 from sanic.server.loop import try_use_uvloop
 from sanic.server.protocols.http_protocol import HttpProtocol
-from sanic.server.runners import serve, serve_multiple, serve_single
+from sanic.server.runners import serve
 
 
 __all__ = (
@@ -11,7 +11,5 @@ __all__ = (
     "HttpProtocol",
     "Signal",
     "serve",
-    "serve_multiple",
-    "serve_single",
     "try_use_uvloop",
 )

sanic/server/loop.py

@@ -1,10 +1,11 @@
 import asyncio
+import sys
 
-from distutils.util import strtobool
 from os import getenv
 
 from sanic.compat import OS_IS_WINDOWS
 from sanic.log import error_logger
+from sanic.utils import str_to_bool
 
 
 def try_use_uvloop() -> None:
@@ -34,7 +35,7 @@ def try_use_uvloop() -> None:
         )
         return
 
-    uvloop_install_removed = strtobool(getenv("SANIC_NO_UVLOOP", "no"))
+    uvloop_install_removed = str_to_bool(getenv("SANIC_NO_UVLOOP", "no"))
     if uvloop_install_removed:
         error_logger.info(
             "You are requesting to run Sanic using uvloop, but the "
@@ -47,3 +48,19 @@ def try_use_uvloop() -> None:
 
     if not isinstance(asyncio.get_event_loop_policy(), uvloop.EventLoopPolicy):
         asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+
+
+def try_windows_loop():
+    if not OS_IS_WINDOWS:
+        error_logger.warning(
+            "You are trying to use an event loop policy that is not "
+            "compatible with your system. You can simply let Sanic handle "
+            "selecting the best loop for you. Sanic will now continue to run "
+            "using the default event loop."
+        )
+        return
+
+    if sys.version_info >= (3, 8) and not isinstance(
+        asyncio.get_event_loop_policy(), asyncio.WindowsSelectorEventLoopPolicy
+    ):
+        asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())

sanic/server/protocols/base_protocol.py

@@ -2,13 +2,14 @@ from __future__ import annotations
 
 from typing import TYPE_CHECKING, Optional
 
+from sanic.exceptions import RequestCancelled
+
 
 if TYPE_CHECKING:
     from sanic.app import Sanic
 
 import asyncio
 
-from asyncio import CancelledError
 from asyncio.transports import Transport
 from time import monotonic as current_time
 
@@ -69,7 +70,7 @@ class SanicProtocol(asyncio.Protocol):
         """
         await self._can_write.wait()
         if self.transport.is_closing():
-            raise CancelledError
+            raise RequestCancelled
         self.transport.write(data)
         self._time = current_time()
 
@@ -120,6 +121,7 @@ class SanicProtocol(asyncio.Protocol):
         try:
             self.connections.discard(self)
             self.resume_writing()
+            self.conn_info.lost = True
             if self._task:
                 self._task.cancel()
         except BaseException:

sanic/server/protocols/http_protocol.py

@@ -15,7 +15,11 @@ import sys
 from asyncio import CancelledError
 from time import monotonic as current_time
 
-from sanic.exceptions import RequestTimeout, ServiceUnavailable
+from sanic.exceptions import (
+    RequestCancelled,
+    RequestTimeout,
+    ServiceUnavailable,
+)
 from sanic.http import Http, Stage
 from sanic.log import Colors, error_logger, logger
 from sanic.models.server_types import ConnInfo
@@ -225,7 +229,7 @@ class HttpProtocol(HttpProtocolMixin, SanicProtocol, metaclass=TouchUpMeta):
         """
         await self._can_write.wait()
         if self.transport.is_closing():
-            raise CancelledError
+            raise RequestCancelled
         await self.app.dispatch(
             "http.lifecycle.send",
             inline=True,
@@ -265,7 +269,6 @@ class HttpProtocol(HttpProtocolMixin, SanicProtocol, metaclass=TouchUpMeta):
             error_logger.exception("protocol.connect_made")
 
     def data_received(self, data: bytes):
-
         try:
             self._time = current_time()
             if not data:

sanic/server/protocols/websocket_protocol.py

@@ -1,10 +1,16 @@
 from typing import TYPE_CHECKING, Optional, Sequence, cast
 
-from websockets.connection import CLOSED, CLOSING, OPEN
+
-from websockets.server import ServerConnection
+try:  # websockets < 11.0
+    from websockets.connection import State
+    from websockets.server import ServerConnection as ServerProtocol
+except ImportError:  # websockets >= 11.0
+    from websockets.protocol import State  # type: ignore
+    from websockets.server import ServerProtocol  # type: ignore
+
 from websockets.typing import Subprotocol
 
-from sanic.exceptions import ServerError
+from sanic.exceptions import SanicException
 from sanic.log import logger
 from sanic.server import HttpProtocol
 
@@ -15,6 +21,11 @@ if TYPE_CHECKING:
     from websockets import http11
 
 
+OPEN = State.OPEN
+CLOSING = State.CLOSING
+CLOSED = State.CLOSED
+
+
 class WebSocketProtocol(HttpProtocol):
     __slots__ = (
         "websocket",
@@ -74,7 +85,7 @@ class WebSocketProtocol(HttpProtocol):
         # Called by Sanic Server when shutting down
         # If we've upgraded to websocket, shut it down
         if self.websocket is not None:
-            if self.websocket.connection.state in (CLOSING, CLOSED):
+            if self.websocket.ws_proto.state in (CLOSING, CLOSED):
                 return True
             elif self.websocket.loop is not None:
                 self.websocket.loop.create_task(self.websocket.close(1001))
@@ -90,7 +101,7 @@ class WebSocketProtocol(HttpProtocol):
         try:
             if subprotocols is not None:
                 # subprotocols can be a set or frozenset,
-                # but ServerConnection needs a list
+                # but ServerProtocol needs a list
                 subprotocols = cast(
                     Optional[Sequence[Subprotocol]],
                     list(
@@ -100,19 +111,19 @@ class WebSocketProtocol(HttpProtocol):
                         ]
                     ),
                 )
-            ws_conn = ServerConnection(
+            ws_proto = ServerProtocol(
                 max_size=self.websocket_max_size,
                 subprotocols=subprotocols,
                 state=OPEN,
                 logger=logger,
             )
-            resp: "http11.Response" = ws_conn.accept(request)
+            resp: "http11.Response" = ws_proto.accept(request)
         except Exception:
             msg = (
                 "Failed to open a WebSocket connection.\n"
                 "See server log for more information.\n"
             )
-            raise ServerError(msg, status_code=500)
+            raise SanicException(msg, status_code=500)
         if 100 <= resp.status_code <= 299:
             first_line = (
                 f"HTTP/1.1 {resp.status_code} {resp.reason_phrase}\r\n"
@@ -127,9 +138,9 @@ class WebSocketProtocol(HttpProtocol):
                 rbody += b"\r\n\r\n"
             await super().send(rbody)
         else:
-            raise ServerError(resp.body, resp.status_code)
+            raise SanicException(resp.body, resp.status_code)
         self.websocket = WebsocketImplProtocol(
-            ws_conn,
+            ws_proto,
             ping_interval=self.websocket_ping_interval,
             ping_timeout=self.websocket_ping_timeout,
             close_timeout=self.websocket_timeout,

sanic/server/runners.py

@@ -9,33 +9,27 @@ from sanic.config import Config
 from sanic.exceptions import ServerError
 from sanic.http.constants import HTTP
 from sanic.http.tls import get_ssl_context
-from sanic.server.events import trigger_events
 
 
 if TYPE_CHECKING:
     from sanic.app import Sanic
 
 import asyncio
-import multiprocessing
 import os
 import socket
 
 from functools import partial
-from signal import SIG_IGN, SIGINT, SIGTERM, Signals
+from signal import SIG_IGN, SIGINT, SIGTERM
 from signal import signal as signal_func
 
 from sanic.application.ext import setup_ext
 from sanic.compat import OS_IS_WINDOWS, ctrlc_workaround_for_windows
 from sanic.http.http3 import SessionTicketStore, get_config
-from sanic.log import error_logger, logger
+from sanic.log import error_logger, server_logger
 from sanic.models.server_types import Signal
 from sanic.server.async_server import AsyncioServer
 from sanic.server.protocols.http_protocol import Http3Protocol, HttpProtocol
-from sanic.server.socket import (
+from sanic.server.socket import bind_unix_socket, remove_unix_socket
-    bind_socket,
-    bind_unix_socket,
-    remove_unix_socket,
-)
 
 
 try:
@@ -129,7 +123,7 @@ def _setup_system_signals(
     run_multiple: bool,
     register_sys_signals: bool,
     loop: asyncio.AbstractEventLoop,
-) -> None:
+) -> None:  # no cov
     # Ignore SIGINT when run_multiple
     if run_multiple:
         signal_func(SIGINT, SIG_IGN)
@@ -141,18 +135,20 @@ def _setup_system_signals(
             ctrlc_workaround_for_windows(app)
         else:
             for _signal in [SIGTERM] if run_multiple else [SIGINT, SIGTERM]:
-                loop.add_signal_handler(_signal, app.stop)
+                loop.add_signal_handler(
+                    _signal, partial(app.stop, terminate=False)
+                )
 
 
 def _run_server_forever(loop, before_stop, after_stop, cleanup, unix):
     pid = os.getpid()
     try:
-        logger.info("Starting worker [%s]", pid)
+        server_logger.info("Starting worker [%s]", pid)
         loop.run_forever()
     except KeyboardInterrupt:
         pass
     finally:
-        logger.info("Stopping worker [%s]", pid)
+        server_logger.info("Stopping worker [%s]", pid)
 
         loop.run_until_complete(before_stop())
 
@@ -161,6 +157,7 @@ def _run_server_forever(loop, before_stop, after_stop, cleanup, unix):
 
         loop.run_until_complete(after_stop())
         remove_unix_socket(unix)
+        loop.close()
 
 
 def _serve_http_1(
@@ -197,8 +194,12 @@ def _serve_http_1(
     asyncio_server_kwargs = (
         asyncio_server_kwargs if asyncio_server_kwargs else {}
     )
+    if OS_IS_WINDOWS and sock:
+        pid = os.getpid()
+        sock = sock.share(pid)
+        sock = socket.fromshare(sock)
     # UNIX sockets are always bound by us (to preserve semantics between modes)
-    if unix:
+    elif unix:
         sock = bind_unix_socket(unix, backlog=backlog)
     server_coroutine = loop.create_server(
         server,
@@ -222,6 +223,7 @@ def _serve_http_1(
 
     loop.run_until_complete(app._startup())
     loop.run_until_complete(app._server_event("init", "before"))
+    app.ack()
 
     try:
         http_server = loop.run_until_complete(server_coroutine)
@@ -299,6 +301,7 @@ def _serve_http_3(
     server = AsyncioServer(app, loop, coro, [])
     loop.run_until_complete(server.startup())
     loop.run_until_complete(server.before_start())
+    app.ack()
     loop.run_until_complete(server)
     _setup_system_signals(app, run_multiple, register_sys_signals, loop)
     loop.run_until_complete(server.after_start())
@@ -310,92 +313,6 @@ def _serve_http_3(
     )
 
 
-def serve_single(server_settings):
-    main_start = server_settings.pop("main_start", None)
-    main_stop = server_settings.pop("main_stop", None)
-
-    if not server_settings.get("run_async"):
-        # create new event_loop after fork
-        loop = asyncio.new_event_loop()
-        asyncio.set_event_loop(loop)
-        server_settings["loop"] = loop
-
-    trigger_events(main_start, server_settings["loop"])
-    serve(**server_settings)
-    trigger_events(main_stop, server_settings["loop"])
-
-    server_settings["loop"].close()
-
-
-def serve_multiple(server_settings, workers):
-    """Start multiple server processes simultaneously.  Stop on interrupt
-    and terminate signals, and drain connections when complete.
-
-    :param server_settings: kw arguments to be passed to the serve function
-    :param workers: number of workers to launch
-    :param stop_event: if provided, is used as a stop signal
-    :return:
-    """
-    server_settings["reuse_port"] = True
-    server_settings["run_multiple"] = True
-
-    main_start = server_settings.pop("main_start", None)
-    main_stop = server_settings.pop("main_stop", None)
-    loop = asyncio.new_event_loop()
-    asyncio.set_event_loop(loop)
-
-    trigger_events(main_start, loop)
-
-    # Create a listening socket or use the one in settings
-    sock = server_settings.get("sock")
-    unix = server_settings["unix"]
-    backlog = server_settings["backlog"]
-    if unix:
-        sock = bind_unix_socket(unix, backlog=backlog)
-        server_settings["unix"] = unix
-    if sock is None:
-        sock = bind_socket(
-            server_settings["host"], server_settings["port"], backlog=backlog
-        )
-        sock.set_inheritable(True)
-        server_settings["sock"] = sock
-        server_settings["host"] = None
-        server_settings["port"] = None
-
-    processes = []
-
-    def sig_handler(signal, frame):
-        logger.info("Received signal %s. Shutting down.", Signals(signal).name)
-        for process in processes:
-            os.kill(process.pid, SIGTERM)
-
-    signal_func(SIGINT, lambda s, f: sig_handler(s, f))
-    signal_func(SIGTERM, lambda s, f: sig_handler(s, f))
-    mp = multiprocessing.get_context("fork")
-
-    for _ in range(workers):
-        process = mp.Process(
-            target=serve,
-            kwargs=server_settings,
-        )
-        process.daemon = True
-        process.start()
-        processes.append(process)
-
-    for process in processes:
-        process.join()
-
-    # the above processes will block this until they're stopped
-    for process in processes:
-        process.terminate()
-
-    trigger_events(main_stop, loop)
-
-    sock.close()
-    loop.close()
-    remove_unix_socket(unix)
-
-
 def _build_protocol_kwargs(
     protocol: Type[asyncio.Protocol], config: Config
 ) -> Dict[str, Union[int, float]]:

sanic/server/socket.py

@@ -6,7 +6,10 @@ import socket
 import stat
 
 from ipaddress import ip_address
-from typing import Optional
+from typing import Any, Dict, Optional
+
+from sanic.exceptions import ServerError
+from sanic.http.constants import HTTP
 
 
 def bind_socket(host: str, port: int, *, backlog=100) -> socket.socket:
@@ -16,6 +19,8 @@ def bind_socket(host: str, port: int, *, backlog=100) -> socket.socket:
     :param backlog: Maximum number of connections to queue
     :return: socket.socket object
     """
+    location = (host, port)
+    # socket.share, socket.fromshare
     try:  # IP address: family must be specified for IPv6 at least
         ip = ip_address(host)
         host = str(ip)
@@ -25,8 +30,9 @@ def bind_socket(host: str, port: int, *, backlog=100) -> socket.socket:
     except ValueError:  # Hostname, may become AF_INET or AF_INET6
         sock = socket.socket()
     sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-    sock.bind((host, port))
+    sock.bind(location)
     sock.listen(backlog)
+    sock.set_inheritable(True)
     return sock
 
 
@@ -36,7 +42,7 @@ def bind_unix_socket(path: str, *, mode=0o666, backlog=100) -> socket.socket:
     :param backlog: Maximum number of connections to queue
     :return: socket.socket object
     """
-    """Open or atomically replace existing socket with zero downtime."""
+
     # Sanitise and pre-verify socket path
     path = os.path.abspath(path)
     folder = os.path.dirname(path)
@@ -85,3 +91,40 @@ def remove_unix_socket(path: Optional[str]) -> None:
                     os.unlink(path)
     except FileNotFoundError:
         pass
+
+
+def configure_socket(
+    server_settings: Dict[str, Any]
+) -> Optional[socket.SocketType]:
+    # Create a listening socket or use the one in settings
+    if server_settings.get("version") is HTTP.VERSION_3:
+        return None
+    sock = server_settings.get("sock")
+    unix = server_settings["unix"]
+    backlog = server_settings["backlog"]
+    if unix:
+        sock = bind_unix_socket(unix, backlog=backlog)
+        server_settings["unix"] = unix
+    if sock is None:
+        try:
+            sock = bind_socket(
+                server_settings["host"],
+                server_settings["port"],
+                backlog=backlog,
+            )
+        except OSError as e:  # no cov
+            error = ServerError(
+                f"Sanic server could not start: {e}.\n\n"
+                "This may have happened if you are running Sanic in the "
+                "global scope and not inside of a "
+                '`if __name__ == "__main__"` block.\n\nSee more information: '
+                "https://sanic.dev/en/guide/deployment/manager.html#"
+                "how-sanic-server-starts-processes\n"
+            )
+            error.quiet = True
+            raise error
+        sock.set_inheritable(True)
+        server_settings["sock"] = sock
+        server_settings["host"] = None
+        server_settings["port"] = None
+    return sock