Cleanup implementation

Co-authored-by: Néstor Pérez <25409753+prryplatypus@users.noreply.github.com>

.black.toml

@@ -1,2 +0,0 @@
-[tool.black]
-line-length = 79

.codeclimate.yml

@@ -1,28 +0,0 @@
-exclude_patterns:
-  - "sanic/__main__.py"
-  - "sanic/application/logo.py"
-  - "sanic/application/motd.py"
-  - "sanic/reloader_helpers.py"
-  - "sanic/simple.py"
-  - "sanic/utils.py"
-  - ".github/"
-  - "changelogs/"
-  - "docker/"
-  - "docs/"
-  - "examples/"
-  - "scripts/"
-  - "tests/"
-checks:
-  argument-count:
-    enabled: false
-  file-lines:
-    config:
-      threshold: 1000
-  method-count:
-    config:
-      threshold: 40
-  complex-logic:
-    enabled: false
-  method-complexity:
-    config:
-      threshold: 10

.coveragerc

@@ -3,13 +3,12 @@ branch = True
 source = sanic
 omit =
     site-packages
-    sanic/application/logo.py
-    sanic/application/motd.py
-    sanic/cli
     sanic/__main__.py
-    sanic/reloader_helpers.py
+    sanic/server/legacy.py
+    sanic/compat.py
     sanic/simple.py
     sanic/utils.py
+    sanic/cli
 
 [html]
 directory = coverage
@@ -21,3 +20,5 @@ exclude_lines =
     noqa
     NOQA
     pragma: no cover
+    TYPE_CHECKING
+skip_empty = True

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,25 +1,27 @@
 ---
 name: Bug report
 about: Create a report to help us improve
+labels: ["bug"]
 
 ---
 
 **Describe the bug**
-A clear and concise description of what the bug is, make sure to paste any exceptions and tracebacks.
+<!-- 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.
+<!-- Relevant source code, make sure to remove what is not necessary. -->
 
 
 **Expected behavior**
-A clear and concise description of what you expected to happen.
+<!-- 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]
+<!-- Please provide the information below. Instead, you can copy and paste the message that Sanic shows on startup. If you do, please remember to format it with ``` -->
+ - OS: 
+ - Sanic Version:
 
 
 **Additional context**
-Add any other context about the problem here.
+<!-- Add any other context about the problem here. -->

.github/ISSUE_TEMPLATE/config.yml

@@ -3,3 +3,6 @@ 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.md

@@ -1,16 +1,17 @@
 ---
 name: Feature request
 about: Suggest an idea for Sanic
+labels: ["feature request"]
 
 ---
 
 **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 [...]
+<!-- 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.
+<!-- 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.
+<!-- Add any other context or sample code about the feature request here. -->

.github/workflows/codeql-analysis.yml

@@ -2,9 +2,13 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ main ]
+    branches:
+      - main
+      - "*LTS"
   pull_request:
-    branches: [ main ]
+    branches:
+      - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
   schedule:
     - cron: '25 16 * * 0'

.github/workflows/coverage.yml

@@ -3,13 +3,15 @@ on:
   push:
     branches:
       - main
+      - "*LTS"
     tags:
       - "!*" # Do not execute on tags
   pull_request:
-    types: [opened, synchronize, reopened, ready_for_review]
+    branches:
+      - main
+      - "*LTS"
 jobs:
   test:
-    if: github.event.pull_request.draft == false
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -19,7 +21,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-
       - uses: actions/setup-python@v1
         with:
           python-version: ${{ matrix.python-version }}
@@ -28,9 +29,10 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install tox
-      - uses: paambaati/codeclimate-action@v2.5.3
-        if: always()
-        env:
-          CC_TEST_REPORTER_ID: ${{ secrets.CODECLIMATE }}
+      - name: Run coverage
+        run: tox -e coverage
+        continue-on-error: true
+      - uses: codecov/codecov-action@v2
         with:
-          coverageCommand: tox -e coverage
+          files: ./coverage.xml
+          fail_ci_if_error: false

.github/workflows/pr-bandit.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

.github/workflows/pr-docs.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

.github/workflows/pr-linter.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

.github/workflows/pr-python310.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

.github/workflows/pr-python37.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

.github/workflows/pr-python38.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

.github/workflows/pr-python39.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

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

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:
@@ -15,7 +16,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         config:
-          - { python-version: 3.7, tox-env: type-checking}
+          # - { python-version: 3.7, tox-env: type-checking}
           - { python-version: 3.8, tox-env: type-checking}
           - { python-version: 3.9, tox-env: type-checking}
           - { python-version: "3.10", tox-env: type-checking}

.github/workflows/pr-windows.yml

@@ -3,6 +3,7 @@ on:
   pull_request:
     branches:
       - main
+      - "*LTS"
     types: [opened, synchronize, reopened, ready_for_review]
 
 jobs:

CHANGELOG.rst

@@ -313,8 +313,10 @@ 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**
 
@@ -348,8 +350,8 @@ 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**
 
@@ -357,11 +359,6 @@ Version 20.12.0
     `#1993 <https://github.com/sanic-org/sanic/pull/1993>`_
     Add disable app registry
 
-Version 20.12.0
----------------
-
-**Features**
-
   *
     `#1945 <https://github.com/sanic-org/sanic/pull/1945>`_
     Static route more verbose if file not found

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
 ---------------
@@ -140,6 +140,7 @@ To maintain the code consistency, Sanic uses following tools.
 #. `isort <https://github.com/timothycrosley/isort>`_
 #. `black <https://github.com/python/black>`_
 #. `flake8 <https://github.com/PyCQA/flake8>`_
+#. `slotscheck <https://github.com/ariebovenberg/slotscheck>`_
 
 isort
 *****
@@ -167,7 +168,13 @@ flake8
 #. pycodestyle
 #. Ned Batchelder's McCabe script
 
-``isort``\ , ``black`` and ``flake8`` checks are performed during ``tox`` lint checks.
+slotscheck
+**********
+
+``slotscheck`` ensures that there are no problems with ``__slots__``
+(e.g. overlaps, or missing slots in base classes).
+
+``isort``\ , ``black``\ , ``flake8`` and ``slotscheck`` checks are performed during ``tox`` lint checks.
 
 The **easiest** way to make your code conform is to run the following before committing.
 

Makefile

@@ -66,15 +66,15 @@ ifdef include_tests
 	isort -rc sanic tests
 else
 	$(info Sorting Imports)
-	isort -rc sanic tests  --profile=black
+	isort -rc sanic tests
 endif
 endif
 
 black:
-	black --config ./.black.toml sanic tests
+	black sanic tests
 
 isort:
-	isort sanic tests --profile=black
+	isort sanic tests
 
 pretty: black isort
 

README.rst

@@ -66,7 +66,7 @@ Sanic | Build fast. Run fast.
 
 Sanic is a **Python 3.7+** web server and web framework that's written to go fast. It allows the usage of the ``async/await`` syntax added in Python 3.5, which makes your code non-blocking and speedy.
 
-Sanic is also ASGI compliant, so you can deploy it with an `alternative ASGI webserver <https://sanic.readthedocs.io/en/latest/sanic/deploying.html#running-via-asgi>`_.
+Sanic is also ASGI compliant, so you can deploy it with an `alternative ASGI webserver <https://sanicframework.org/en/guide/deployment/running.html#asgi>`_.
 
 `Source code on GitHub <https://github.com/sanic-org/sanic/>`_ | `Help and discussion board <https://community.sanicframework.org/>`_ | `User Guide <https://sanicframework.org>`_ | `Chat on Discord <https://discord.gg/FARQzAEMAA>`_
 
@@ -114,7 +114,7 @@ Hello World Example
     from sanic import Sanic
     from sanic.response import json
 
-    app = Sanic("My Hello, world app")
+    app = Sanic("my-hello-world-app")
 
     @app.route('/')
     async def test(request):

SECURITY.md

@@ -4,31 +4,40 @@
 
 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
-:heavy_check_mark: = full support
+| Version | LTS           | Supported               |
+| ------- | ------------- | ----------------------- |
+| 22.6    |               | :white_check_mark:      |
+| 22.3    |               | :x:                     |
+| 21.12   | until 2023-12 | :white_check_mark:      |
+| 21.9    |               | :x:                     |
+| 21.6    |               | :x:                     |
+| 21.3    |               | :x:                     |
+| 20.12   | until 2022-12 | :ballot_box_with_check: |
+| 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

@@ -0,0 +1,27 @@
+coverage:
+  status:
+    patch:
+      default:
+        target: auto
+        threshold: 0.75
+        informational: true
+    project:
+      default:
+        target: auto
+        threshold: 0.5
+  precision: 3
+codecov:
+  require_ci_to_pass: false
+ignore:
+  - "sanic/__main__.py"
+  - "sanic/compat.py"
+  - "sanic/simple.py"
+  - "sanic/utils.py"
+  - "sanic/cli"
+  - ".github/"
+  - "changelogs/"
+  - "docker/"
+  - "docs/"
+  - "examples/"
+  - "scripts/"
+  - "tests/"

docs/conf.py

@@ -24,7 +24,11 @@ import sanic
 
 # -- General configuration ------------------------------------------------
 
-extensions = ["sphinx.ext.autodoc", "m2r2"]
+extensions = [
+    "sphinx.ext.autodoc",
+    "m2r2",
+    "enum_tools.autoenum",
+]
 
 templates_path = ["_templates"]
 

docs/index.rst

@@ -9,7 +9,7 @@ API
 ===
 
 .. toctree::
-   :maxdepth: 2
+   :maxdepth: 3
 
    👥 User Guide <https://sanicframework.org/guide/>
    sanic/api_reference

docs/sanic/api/app.rst

@@ -15,3 +15,19 @@ sanic.config
 .. automodule:: sanic.config
     :members:
     :show-inheritance:
+
+sanic.application.constants
+---------------------------
+
+.. automodule:: sanic.application.constants
+    :exclude-members: StrEnum
+    :members:
+    :show-inheritance:
+    :inherited-members:
+
+sanic.application.state
+-----------------------
+
+.. automodule:: sanic.application.state
+    :members:
+    :show-inheritance:

docs/sanic/api/core.rst

@@ -17,6 +17,14 @@ sanic.handlers
     :show-inheritance:
 
 
+sanic.headers
+--------------
+
+.. automodule:: sanic.headers
+    :members:
+    :show-inheritance:
+
+
 sanic.request
 -------------
 

docs/sanic/api/server.rst

@@ -16,10 +16,3 @@ sanic.server
     :members:
     :show-inheritance:
 
-
-sanic.worker
-------------
-
-.. automodule:: sanic.worker
-    :members:
-    :show-inheritance:

docs/sanic/changelog.rst

@@ -1,6 +1,8 @@
 📜 Changelog
 ============
 
+.. mdinclude:: ./releases/22/22.6.md
+.. mdinclude:: ./releases/22/22.3.md
 .. mdinclude:: ./releases/21/21.12.md
 .. mdinclude:: ./releases/21/21.9.md
 .. include:: ../../CHANGELOG.rst

docs/sanic/releases/21/21.12.md

@@ -1,4 +1,12 @@
-## Version 21.12.0
+## Version 21.12.1 🔷
+
+_Current LTS version_
+
+- [#2349](https://github.com/sanic-org/sanic/pull/2349) Only display MOTD on startup
+- [#2354](https://github.com/sanic-org/sanic/pull/2354) Ignore name argument in Python 3.7
+- [#2355](https://github.com/sanic-org/sanic/pull/2355) Add config.update support for all config values
+
+## Version 21.12.0 🔹
 
 ### Features
 - [#2260](https://github.com/sanic-org/sanic/pull/2260) Allow early Blueprint registrations to still apply later added objects

docs/sanic/releases/22/22.3.md

@@ -0,0 +1,52 @@
+## Version 22.3.0
+
+### Features
+- [#2347](https://github.com/sanic-org/sanic/pull/2347) API for multi-application server
+    - 🚨 *BREAKING CHANGE*: The old `sanic.worker.GunicornWorker` has been **removed**. To run Sanic with `gunicorn`, you should use it thru `uvicorn` [as described in their docs](https://www.uvicorn.org/#running-with-gunicorn).
+    - 🧁 *SIDE EFFECT*: Named background tasks are now supported, even in Python 3.7
+- [#2357](https://github.com/sanic-org/sanic/pull/2357) Parse `Authorization` header as `Request.credentials`
+- [#2361](https://github.com/sanic-org/sanic/pull/2361) Add config option to skip `Touchup` step in application startup
+- [#2372](https://github.com/sanic-org/sanic/pull/2372) Updates to CLI help messaging
+- [#2382](https://github.com/sanic-org/sanic/pull/2382) Downgrade warnings to backwater debug messages 
+- [#2396](https://github.com/sanic-org/sanic/pull/2396) Allow for `multidict` v0.6
+- [#2401](https://github.com/sanic-org/sanic/pull/2401) Upgrade CLI catching for alternative application run types
+- [#2402](https://github.com/sanic-org/sanic/pull/2402) Conditionally inject CLI arguments into factory
+- [#2413](https://github.com/sanic-org/sanic/pull/2413) Add new start and stop event listeners to reloader process
+- [#2414](https://github.com/sanic-org/sanic/pull/2414) Remove loop as required listener arg
+- [#2415](https://github.com/sanic-org/sanic/pull/2415) Better exception for bad URL parsing
+- [sanic-routing#47](https://github.com/sanic-org/sanic-routing/pull/47) Add a new extention parameter type: `<file:ext>`, `<file:ext=jpg>`, `<file:ext=jpg|png|gif|svg>`, `<file=int:ext>`, `<file=int:ext=jpg|png|gif|svg>`, `<file=float:ext=tar.gz>`
+    - 👶 *BETA FEATURE*: This feature will not work with `path` type matching, and is being released as a beta feature only.
+- [sanic-routing#57](https://github.com/sanic-org/sanic-routing/pull/57) Change `register_pattern` to accept a `str` or `Pattern`
+- [sanic-routing#58](https://github.com/sanic-org/sanic-routing/pull/58) Default matching on non-empty strings only, and new `strorempty` pattern type
+    - 🚨 *BREAKING CHANGE*: Previously a route with a dynamic string parameter (`/<foo>` or `/<foo:str>`) would match on any string, including empty strings. It will now **only** match a non-empty string. To retain the old behavior, you should use the new parameter type: `/<foo:strorempty>`.
+
+### Bugfixes
+- [#2373](https://github.com/sanic-org/sanic/pull/2373) Remove `error_logger` on websockets
+- [#2381](https://github.com/sanic-org/sanic/pull/2381) Fix newly assigned `None` in task registry
+- [sanic-routing#52](https://github.com/sanic-org/sanic-routing/pull/52) Add type casting to regex route matching
+- [sanic-routing#60](https://github.com/sanic-org/sanic-routing/pull/60) Add requirements check on regex routes (this resolves, for example, multiple static directories with differing `host` values)
+
+### Deprecations and Removals
+- [#2362](https://github.com/sanic-org/sanic/pull/2362) 22.3 Deprecations and changes
+    1. `debug=True` and `--debug` do _NOT_ automatically run `auto_reload`
+    2. Default error render is with plain text (browsers still get HTML by default because `auto` looks at headers)
+    3. `config` is required for `ErrorHandler.finalize`
+    4. `ErrorHandler.lookup` requires two positional args
+    5. Unused websocket protocol args removed
+- [#2344](https://github.com/sanic-org/sanic/pull/2344) Deprecate loading of lowercase environment variables
+
+### Developer infrastructure
+- [#2363](https://github.com/sanic-org/sanic/pull/2363) Revert code coverage back to Codecov
+- [#2405](https://github.com/sanic-org/sanic/pull/2405) Upgrade tests for `sanic-routing` changes
+- [sanic-testing#35](https://github.com/sanic-org/sanic-testing/pull/35) Allow for httpx v0.22
+
+### Improved Documentation
+- [#2350](https://github.com/sanic-org/sanic/pull/2350) Fix link in README for ASGI
+- [#2398](https://github.com/sanic-org/sanic/pull/2398) Document middleware on_request and on_response
+- [#2409](https://github.com/sanic-org/sanic/pull/2409) Add missing documentation for `Request.respond`
+
+### Miscellaneous
+- [#2376](https://github.com/sanic-org/sanic/pull/2376) Fix typing for `ListenerMixin.listener`
+- [#2383](https://github.com/sanic-org/sanic/pull/2383) Clear deprecation warning in `asyncio.wait`
+- [#2387](https://github.com/sanic-org/sanic/pull/2387) Cleanup `__slots__` implementations
+- [#2390](https://github.com/sanic-org/sanic/pull/2390) Clear deprecation warning in `asyncio.get_event_loop`

docs/sanic/releases/22/22.6.md

@@ -0,0 +1,43 @@
+## Version 22.6.0 🔶
+
+_Current version_
+
+### Features
+- [#2378](https://github.com/sanic-org/sanic/pull/2378) Introduce HTTP/3 and autogeneration of TLS certificates in `DEBUG` mode
+    - 👶 *EARLY RELEASE FEATURE*: Serving Sanic over HTTP/3 is an early release feature. It does not yet fully cover the HTTP/3 spec, but instead aims for feature parity with Sanic's existing HTTP/1.1 server. Websockets, WebTransport, push responses are examples of some features not yet implemented.
+    - 📦 *EXTRA REQUIREMENT*: Not all HTTP clients are capable of interfacing with HTTP/3 servers. You may need to install a [HTTP/3 capable client](https://curl.se/docs/http3.html).
+    - 📦 *EXTRA REQUIREMENT*: In order to use TLS autogeneration, you must install either [mkcert](https://github.com/FiloSottile/mkcert) or [trustme](https://github.com/python-trio/trustme).
+- [#2416](https://github.com/sanic-org/sanic/pull/2416) Add message to `task.cancel`
+- [#2420](https://github.com/sanic-org/sanic/pull/2420) Add exception aliases for more consistent naming with standard HTTP response types (`BadRequest`, `MethodNotAllowed`, `RangeNotSatisfiable`)
+- [#2432](https://github.com/sanic-org/sanic/pull/2432) Expose ASGI `scope` as a property on the `Request` object
+- [#2438](https://github.com/sanic-org/sanic/pull/2438) Easier access to websocket class for annotation: `from sanic import Websocket`
+- [#2439](https://github.com/sanic-org/sanic/pull/2439) New API for reading form values with options: `Request.get_form` 
+- [#2445](https://github.com/sanic-org/sanic/pull/2445) Add custom `loads` function
+- [#2447](https://github.com/sanic-org/sanic/pull/2447), [#2486](https://github.com/sanic-org/sanic/pull/2486) Improved API to support setting cache control headers
+- [#2453](https://github.com/sanic-org/sanic/pull/2453) Move verbosity filtering to logger
+- [#2475](https://github.com/sanic-org/sanic/pull/2475) Expose getter for current request using `Request.get_current()`
+
+### Bugfixes
+- [#2448](https://github.com/sanic-org/sanic/pull/2448) Fix to allow running with `pythonw.exe` or places where there is no `sys.stdout`
+- [#2451](https://github.com/sanic-org/sanic/pull/2451) Trigger `http.lifecycle.request` signal in ASGI mode
+- [#2455](https://github.com/sanic-org/sanic/pull/2455) Resolve typing of stacked route definitions
+- [#2463](https://github.com/sanic-org/sanic/pull/2463) Properly catch websocket CancelledError in websocket handler in Python 3.7
+
+### Deprecations and Removals
+- [#2487](https://github.com/sanic-org/sanic/pull/2487) v22.6 deprecations and changes
+    1. Optional application registry
+    1. Execution of custom handlers after some part of response was sent
+    1. Configuring fallback handlers on the `ErrorHandler`
+    1. Custom `LOGO` setting
+    1. `sanic.response.stream`
+    1. `AsyncioServer.init`
+
+### Developer infrastructure
+- [#2449](https://github.com/sanic-org/sanic/pull/2449) Clean up `black` and `isort` config
+- [#2479](https://github.com/sanic-org/sanic/pull/2479) Fix some flappy tests
+
+### Improved Documentation
+- [#2461](https://github.com/sanic-org/sanic/pull/2461) Update example to match current application naming standards
+- [#2466](https://github.com/sanic-org/sanic/pull/2466) Better type annotation for `Extend`
+- [#2485](https://github.com/sanic-org/sanic/pull/2485) Improved help messages in CLI
+

examples/delayed_response.py

@@ -4,6 +4,7 @@ from sanic import Sanic, response
 
 
 app = Sanic("DelayedResponseApp", strict_slashes=True)
+app.config.AUTO_EXTEND = False
 
 
 @app.get("/")
@@ -11,7 +12,7 @@ async def handler(request):
     return response.redirect("/sleep/3")
 
 
-@app.get("/sleep/<t:number>")
+@app.get("/sleep/<t:float>")
 async def handler2(request, t=0.3):
     await sleep(t)
     return response.text(f"Slept {t:.1f} seconds.\n")

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"
-    # 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)
+    app.run(unix="./uds_socket")

pyproject.toml

@@ -1,3 +1,26 @@
 [build-system]
-requires = ["setuptools", "wheel"]
+requires = ["setuptools<60.0", "wheel"]
 build-backend = "setuptools.build_meta"
+
+[tool.black]
+line-length = 79
+
+[tool.isort]
+atomic = true
+default_section = "THIRDPARTY"
+include_trailing_comma = true
+known_first_party = "sanic"
+known_third_party = "pytest"
+line_length = 79
+lines_after_imports = 2
+lines_between_types = 1
+multi_line_output = 3
+profile = "black"
+
+[[tool.mypy.overrides]]
+module = [
+    "httptools.*",
+    "trustme.*",
+    "sanic_routing.*",
+]
+ignore_missing_imports = true

readthedocs.yml

@@ -6,4 +6,4 @@ python:
         path: .
         extra_requirements:
             - docs
-   system_packages: true
+   system_packages: true

sanic/__init__.py

@@ -3,7 +3,16 @@ from sanic.app import Sanic
 from sanic.blueprints import Blueprint
 from sanic.constants import HTTPMethod
 from sanic.request import Request
-from sanic.response import HTTPResponse, html, json, text
+from sanic.response import (
+    HTTPResponse,
+    empty,
+    file,
+    html,
+    json,
+    redirect,
+    text,
+)
+from sanic.server.websockets.impl import WebsocketImplProtocol as Websocket
 
 
 __all__ = (
@@ -13,7 +22,11 @@ __all__ = (
     "HTTPMethod",
     "HTTPResponse",
     "Request",
+    "Websocket",
+    "empty",
+    "file",
     "html",
     "json",
+    "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__ = "21.12.0"
+__version__ = "22.9.1"

sanic/application/constants.py

@@ -0,0 +1,32 @@
+from enum import Enum, IntEnum, auto
+
+
+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()
+
+
+class Mode(StrEnum):
+    PRODUCTION = auto()
+    DEBUG = auto()
+
+
+class ServerStage(IntEnum):
+    STOPPED = auto()
+    PARTIAL = auto()
+    SERVING = auto()

sanic/application/ext.py

@@ -5,7 +5,7 @@ from importlib import import_module
 from typing import TYPE_CHECKING
 
 
-if TYPE_CHECKING:  # no cov
+if TYPE_CHECKING:
     from sanic import Sanic
 
     try:
@@ -22,7 +22,7 @@ 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 "

sanic/application/logo.py

@@ -3,6 +3,8 @@ import sys
 
 from os import environ
 
+from sanic.compat import is_atty
+
 
 BASE_LOGO = """
 
@@ -44,7 +46,7 @@ ansi_pattern = re.compile(r"\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])")
 def get_logo(full=False, coffee=False):
     logo = (
         (FULL_COLOR_LOGO if full else (COFFEE_LOGO if coffee else COLOR_LOGO))
-        if sys.stdout.isatty()
+        if is_atty()
         else BASE_LOGO
     )
 

sanic/application/motd.py

@@ -1,11 +1,10 @@
-import sys
-
 from abc import ABC, abstractmethod
 from shutil import get_terminal_size
 from textwrap import indent, wrap
 from typing import Dict, Optional
 
 from sanic import __version__
+from sanic.compat import is_atty
 from sanic.log import logger
 
 
@@ -36,7 +35,7 @@ class MOTD(ABC):
         data: Dict[str, str],
         extra: Dict[str, str],
     ) -> None:
-        motd_class = MOTDTTY if sys.stdout.isatty() else MOTDBasic
+        motd_class = MOTDTTY if is_atty() else MOTDBasic
         motd_class(logo, serve_location, data, extra).display()
 
 
@@ -81,20 +80,23 @@ class MOTDTTY(MOTD):
         )
         self.display_length = self.key_width + self.value_width + 2
 
-    def display(self):
-        version = f"Sanic v{__version__}".center(self.centering_length)
+    def display(self, version=True, action="Goin' Fast", out=None):
+        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}"
-            if self.serve_location
-            else ""
+            f"{action} @ {self.serve_location}" 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}┤",
         ]
@@ -108,7 +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/application/spinner.py

@@ -0,0 +1,86 @@
+import os
+import sys
+import time
+
+from contextlib import contextmanager
+from queue import Queue
+from threading import Thread
+
+
+if os.name == "nt":  # noqa
+    import ctypes  # noqa
+
+    class _CursorInfo(ctypes.Structure):
+        _fields_ = [("size", ctypes.c_int), ("visible", ctypes.c_byte)]
+
+
+class Spinner:  # noqa
+    def __init__(self, message: str) -> None:
+        self.message = message
+        self.queue: Queue[int] = Queue()
+        self.spinner = self.cursor()
+        self.thread = Thread(target=self.run)
+
+    def start(self):
+        self.queue.put(1)
+        self.thread.start()
+        self.hide()
+
+    def run(self):
+        while self.queue.get():
+            output = f"\r{self.message} [{next(self.spinner)}]"
+            sys.stdout.write(output)
+            sys.stdout.flush()
+            time.sleep(0.1)
+            self.queue.put(1)
+
+    def stop(self):
+        self.queue.put(0)
+        self.thread.join()
+        self.show()
+
+    @staticmethod
+    def cursor():
+        while True:
+            for cursor in "|/-\\":
+                yield cursor
+
+    @staticmethod
+    def hide():
+        if os.name == "nt":
+            ci = _CursorInfo()
+            handle = ctypes.windll.kernel32.GetStdHandle(-11)
+            ctypes.windll.kernel32.GetConsoleCursorInfo(
+                handle, ctypes.byref(ci)
+            )
+            ci.visible = False
+            ctypes.windll.kernel32.SetConsoleCursorInfo(
+                handle, ctypes.byref(ci)
+            )
+        elif os.name == "posix":
+            sys.stdout.write("\033[?25l")
+            sys.stdout.flush()
+
+    @staticmethod
+    def show():
+        if os.name == "nt":
+            ci = _CursorInfo()
+            handle = ctypes.windll.kernel32.GetStdHandle(-11)
+            ctypes.windll.kernel32.GetConsoleCursorInfo(
+                handle, ctypes.byref(ci)
+            )
+            ci.visible = True
+            ctypes.windll.kernel32.SetConsoleCursorInfo(
+                handle, ctypes.byref(ci)
+            )
+        elif os.name == "posix":
+            sys.stdout.write("\033[?25h")
+            sys.stdout.flush()
+
+
+@contextmanager
+def loading(message: str = "Loading"):  # noqa
+    spinner = Spinner(message)
+    spinner.start()
+    yield
+    spinner.stop()

sanic/application/state.py

@@ -3,33 +3,25 @@ from __future__ import annotations
 import logging
 
 from dataclasses import dataclass, field
-from enum import Enum, auto
 from pathlib import Path
 from socket import socket
 from ssl import SSLContext
-from typing import TYPE_CHECKING, Any, Optional, Set, Union
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Set, Union
 
-from sanic.log import logger
+from sanic.application.constants import Mode, Server, ServerStage
+from sanic.log import VerbosityFilter, logger
+from sanic.server.async_server import AsyncioServer
 
 
 if TYPE_CHECKING:
     from sanic import Sanic
 
 
-class StrEnum(str, Enum):
-    def _generate_next_value_(name: str, *args) -> str:  # type: ignore
-        return name.lower()
-
-
-class Server(StrEnum):
-    SANIC = auto()
-    ASGI = auto()
-    GUNICORN = auto()
-
-
-class Mode(StrEnum):
-    PRODUCTION = auto()
-    DEBUG = auto()
+@dataclass
+class ApplicationServerInfo:
+    settings: Dict[str, Any]
+    stage: ServerStage = field(default=ServerStage.STOPPED)
+    server: Optional[AsyncioServer] = field(default=None)
 
 
 @dataclass
@@ -45,12 +37,15 @@ class ApplicationState:
     unix: Optional[str] = field(default=None)
     mode: Mode = field(default=Mode.PRODUCTION)
     reload_dirs: Set[Path] = field(default_factory=set)
+    auto_reload: bool = field(default=False)
     server: Server = field(default=Server.SANIC)
     is_running: bool = field(default=False)
     is_started: bool = field(default=False)
     is_stopping: bool = field(default=False)
     verbosity: int = field(default=0)
     workers: int = field(default=0)
+    primary: bool = field(default=True)
+    server_info: List[ApplicationServerInfo] = field(default_factory=list)
 
     # This property relates to the ApplicationState instance and should
     # not be changed except in the __post_init__ method
@@ -74,6 +69,23 @@ class ApplicationState:
         if getattr(self.app, "configure_logging", False) and self.app.debug:
             logger.setLevel(logging.DEBUG)
 
+    def set_verbosity(self, value: int):
+        VerbosityFilter.verbosity = value
+
     @property
     def is_debug(self):
         return self.mode is Mode.DEBUG
+
+    @property
+    def stage(self) -> ServerStage:
+        if not self.server_info:
+            return ServerStage.STOPPED
+
+        if all(info.stage is ServerStage.SERVING for info in self.server_info):
+            return ServerStage.SERVING
+        elif any(
+            info.stage is ServerStage.SERVING for info in self.server_info
+        ):
+            return ServerStage.PARTIAL
+
+        return ServerStage.STOPPED

sanic/asgi.py

@@ -1,14 +1,16 @@
+from __future__ import annotations
+
 import warnings
 
-from typing import Optional
+from typing import TYPE_CHECKING, Optional
 from urllib.parse import quote
 
-import sanic.app  # noqa
-
 from sanic.compat import Header
 from sanic.exceptions import ServerError
+from sanic.handlers import RequestManager
 from sanic.helpers import _default
 from sanic.http import Stage
+from sanic.log import logger
 from sanic.models.asgi import ASGIReceive, ASGIScope, ASGISend, MockTransport
 from sanic.request import Request
 from sanic.response import BaseHTTPResponse
@@ -16,29 +18,35 @@ from sanic.server import ConnInfo
 from sanic.server.websockets.connection import WebSocketConnection
 
 
+if TYPE_CHECKING:
+    from sanic import Sanic
+
+
 class Lifespan:
-    def __init__(self, asgi_app: "ASGIApp") -> None:
+    def __init__(self, asgi_app: ASGIApp) -> None:
         self.asgi_app = asgi_app
 
         if (
             "server.init.before"
             in self.asgi_app.sanic_app.signal_router.name_index
         ):
-            warnings.warn(
+            logger.debug(
                 'You have set a listener for "before_server_start" '
                 "in ASGI mode. "
                 "It will be executed as early as possible, but not before "
-                "the ASGI server is started."
+                "the ASGI server is started.",
+                extra={"verbosity": 1},
             )
         if (
             "server.shutdown.after"
             in self.asgi_app.sanic_app.signal_router.name_index
         ):
-            warnings.warn(
+            logger.debug(
                 'You have set a listener for "after_server_stop" '
                 "in ASGI mode. "
                 "It will be executed as late as possible, but not after "
-                "the ASGI server is stopped."
+                "the ASGI server is stopped.",
+                extra={"verbosity": 1},
             )
 
     async def startup(self) -> None:
@@ -88,7 +96,7 @@ class Lifespan:
 
 
 class ASGIApp:
-    sanic_app: "sanic.app.Sanic"
+    sanic_app: Sanic
     request: Request
     transport: MockTransport
     lifespan: Lifespan
@@ -157,6 +165,13 @@ class ASGIApp:
             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
 
     async def read(self) -> Optional[bytes]:
@@ -216,8 +231,9 @@ class ASGIApp:
         """
         Handle the incoming request.
         """
+        manager = RequestManager.create(self.request)
         try:
             self.stage = Stage.HANDLER
-            await self.sanic_app.handle_request(self.request)
+            await manager.handle()
         except Exception as e:
-            await self.sanic_app.handle_exception(self.request, e)
+            await manager.error(e)

sanic/blueprint_group.py

@@ -5,7 +5,7 @@ from functools import partial
 from typing import TYPE_CHECKING, List, Optional, Union
 
 
-if TYPE_CHECKING:  # no cov
+if TYPE_CHECKING:
     from sanic.blueprints import Blueprint
 
 

sanic/blueprints.py

@@ -21,8 +21,8 @@ from typing import (
     Union,
 )
 
-from sanic_routing.exceptions import NotFound  # type: ignore
-from sanic_routing.route import Route  # type: ignore
+from sanic_routing.exceptions import NotFound
+from sanic_routing.route import Route
 
 from sanic.base.root import BaseSanic
 from sanic.blueprint_group import BlueprintGroup
@@ -36,7 +36,7 @@ from sanic.models.handler_types import (
 )
 
 
-if TYPE_CHECKING:  # no cov
+if TYPE_CHECKING:
     from sanic import Sanic
 
 
@@ -308,7 +308,7 @@ class Blueprint(BaseSanic):
             # 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,
@@ -363,7 +363,7 @@ 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:
@@ -456,6 +456,18 @@ 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

@@ -1,10 +1,10 @@
+import logging
 import os
 import shutil
 import sys
 
 from argparse import ArgumentParser, RawTextHelpFormatter
-from importlib import import_module
-from pathlib import Path
+from functools import partial
 from textwrap import indent
 from typing import Any, List, Union
 
@@ -12,7 +12,8 @@ from sanic.app import Sanic
 from sanic.application.logo import get_logo
 from sanic.cli.arguments import Group
 from sanic.log import error_logger
-from sanic.simple import create_simple_server
+from sanic.worker.inspector import inspect
+from sanic.worker.loader import AppLoader
 
 
 class SanicArgumentParser(ArgumentParser):
@@ -58,35 +59,73 @@ Or, a path to a directory to run as a simple HTTP server:
             os.environ.get("SANIC_RELOADER_PROCESS", "") != "true"
         )
         self.args: List[Any] = []
+        self.groups: List[Group] = []
 
     def attach(self):
         for group in Group._registry:
-            group.create(self.parser).attach()
+            instance = group.create(self.parser)
+            instance.attach()
+            self.groups.append(instance)
 
-    def run(self):
-        # 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
+    def run(self, parse_args=None):
+        legacy_version = False
+        if not parse_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("--"):
+                        self.parser.add_argument(arg.split("=")[0])
 
         self.args = self.parser.parse_args(args=parse_args)
         self._precheck()
+        app_loader = AppLoader(
+            self.args.module,
+            self.args.factory,
+            self.args.simple,
+            self.args,
+        )
 
         try:
-            app = self._get_app()
+            app = self._get_app(app_loader)
             kwargs = self._build_run_kwargs()
-            app.run(**kwargs)
-        except ValueError:
-            error_logger.exception("Failed to run app")
+        except ValueError as e:
+            error_logger.exception(f"Failed to run app: {e}")
+        else:
+            if self.args.inspect or self.args.inspect_raw or self.args.trigger:
+                os.environ["SANIC_IGNORE_PRODUCTION_WARNING"] = "true"
+            else:
+                for http_version in self.args.http:
+                    app.prepare(**kwargs, version=http_version)
+
+            if self.args.inspect or self.args.inspect_raw or self.args.trigger:
+                action = self.args.trigger or (
+                    "raw" if self.args.inspect_raw else "pretty"
+                )
+                inspect(
+                    app.config.INSPECTOR_HOST,
+                    app.config.INSPECTOR_PORT,
+                    action,
+                )
+                del os.environ["SANIC_IGNORE_PRODUCTION_WARNING"]
+                return
+
+            if self.args.single:
+                serve = Sanic.serve_single
+            elif self.args.legacy:
+                serve = Sanic.serve_legacy
+            else:
+                serve = partial(Sanic.serve, app_loader=app_loader)
+            serve(app)
 
     def _precheck(self):
-        if self.args.debug and self.main_process:
-            error_logger.warning(
-                "Starting in v22.3, --debug will no "
-                "longer automatically run the auto-reloader.\n  Switch to "
-                "--dev to continue using that functionality."
-            )
-
-        # # 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)
@@ -106,48 +145,27 @@ Or, a path to a directory to run as a simple HTTP server:
             )
             error_logger.error(message)
             sys.exit(1)
+        if self.args.inspect or self.args.inspect_raw:
+            logging.disable(logging.CRITICAL)
 
-    def _get_app(self):
+    def _get_app(self, app_loader: AppLoader):
         try:
-            module_path = os.path.abspath(os.getcwd())
-            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 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:
-                    app = app()
-
-                app_type_name = type(app).__name__
-
-                if not isinstance(app, Sanic):
-                    raise ValueError(
-                        f"Module is not a Sanic app, it is a {app_type_name}\n"
-                        f"  Perhaps you meant {self.args.module}.app?"
-                    )
+            app = app_loader.load()
         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"
                     "  Example Module: project.sanic_server.app"
                 )
+                sys.exit(1)
             else:
                 raise e
         return app
 
     def _build_run_kwargs(self):
+        for group in self.groups:
+            group.prepare(self.args)
         ssl: Union[None, dict, str, list] = []
         if self.args.tlshost:
             ssl.append(None)
@@ -160,8 +178,10 @@ 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,
@@ -172,18 +192,17 @@ Or, a path to a directory to run as a simple HTTP server:
             "unix": self.args.unix,
             "verbosity": self.args.verbosity or 0,
             "workers": self.args.workers,
+            "auto_tls": self.args.auto_tls,
+            "single_process": self.args.single,
+            "legacy": self.args.legacy,
         }
 
-        if self.args.auto_reload:
-            kwargs["auto_reload"] = True
+        for maybe_arg in ("auto_reload", "dev"):
+            if getattr(self.args, maybe_arg, False):
+                kwargs[maybe_arg] = True
 
         if self.args.path:
-            if self.args.auto_reload or self.args.debug:
-                kwargs["reload_dir"] = self.args.path
-            else:
-                error_logger.warning(
-                    "Ignoring '--reload-dir' since auto reloading was not "
-                    "enabled. If you would like to watch directories for "
-                    "changes, consider using --debug or --auto-reload."
-                )
+            kwargs["auto_reload"] = True
+            kwargs["reload_dir"] = self.args.path
+
         return kwargs

sanic/cli/arguments.py

@@ -3,9 +3,10 @@ from __future__ import annotations
 from argparse import ArgumentParser, _ArgumentGroup
 from typing import List, Optional, Type, Union
 
-from sanic_routing import __version__ as __routing_version__  # type: ignore
+from sanic_routing import __version__ as __routing_version__
 
 from sanic import __version__
+from sanic.http.constants import HTTP
 
 
 class Group:
@@ -29,7 +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)
@@ -37,6 +38,12 @@ 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:
+        ...
 
 
 class GeneralGroup(Group):
@@ -63,7 +70,8 @@ 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=(
@@ -71,7 +79,7 @@ class ApplicationGroup(Group):
                 "i.e. a () -> <Sanic app> callable"
             ),
         )
-        self.container.add_argument(
+        group.add_argument(
             "-s",
             "--simple",
             dest="simple",
@@ -81,6 +89,70 @@ class ApplicationGroup(Group):
                 "a directory\n(module arg should be a path)"
             ),
         )
+        group.add_argument(
+            "--inspect",
+            dest="inspect",
+            action="store_true",
+            help=("Inspect the state of a running instance, human readable"),
+        )
+        group.add_argument(
+            "--inspect-raw",
+            dest="inspect_raw",
+            action="store_true",
+            help=("Inspect the state of a running instance, JSON output"),
+        )
+        group.add_argument(
+            "--trigger-reload",
+            dest="trigger",
+            action="store_const",
+            const="reload",
+            help=("Trigger worker processes to reload"),
+        )
+        group.add_argument(
+            "--trigger-shutdown",
+            dest="trigger",
+            action="store_const",
+            const="shutdown",
+            help=("Trigger all processes to shutdown"),
+        )
+
+
+class HTTPVersionGroup(Group):
+    name = "HTTP version"
+
+    def attach(self):
+        http_values = [http.value for http in HTTP.__members__.values()]
+
+        self.container.add_argument(
+            "--http",
+            dest="http",
+            action="append",
+            choices=http_values,
+            type=int,
+            help=(
+                "Which HTTP version to use: HTTP/1.1 or HTTP/3. Value should\n"
+                "be either 1, or 3. [default 1]"
+            ),
+        )
+        self.container.add_argument(
+            "-1",
+            dest="http",
+            action="append_const",
+            const=1,
+            help=("Run Sanic server using HTTP/1.1"),
+        )
+        self.container.add_argument(
+            "-3",
+            dest="http",
+            action="append_const",
+            const=3,
+            help=("Run Sanic server using HTTP/3"),
+        )
+
+    def prepare(self, args):
+        if not args.http:
+            args.http = [1]
+        args.http = tuple(sorted(set(map(HTTP, args.http)), reverse=True))
 
 
 class SocketGroup(Group):
@@ -92,7 +164,6 @@ class SocketGroup(Group):
             "--host",
             dest="host",
             type=str,
-            default="127.0.0.1",
             help="Host address [default 127.0.0.1]",
         )
         self.container.add_argument(
@@ -100,7 +171,6 @@ class SocketGroup(Group):
             "--port",
             dest="port",
             type=int,
-            default=8000,
             help="Port to serve on [default 8000]",
         )
         self.container.add_argument(
@@ -167,8 +237,22 @@ 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.container.add_argument(
+            "--legacy",
+            action="store_true",
+            help="Use the legacy server manager",
+        )
         self.add_bool_arguments(
-            "--access-logs", dest="access_log", help="display access logs"
+            "--access-logs",
+            dest="access_log",
+            help="display access logs",
+            default=None,
         )
 
 
@@ -182,18 +266,6 @@ class DevelopmentGroup(Group):
             action="store_true",
             help="Run the server in debug mode",
         )
-        self.container.add_argument(
-            "-d",
-            "--dev",
-            dest="debug",
-            action="store_true",
-            help=(
-                "Currently is an alias for --debug. But starting in v22.3, \n"
-                "--debug will no longer automatically trigger auto_restart. \n"
-                "However, --dev will continue, effectively making it the \n"
-                "same as debug + auto_reload."
-            ),
-        )
         self.container.add_argument(
             "-r",
             "--reload",
@@ -212,12 +284,34 @@ class DevelopmentGroup(Group):
             action="append",
             help="Extra directories to watch and reload on changes",
         )
+        self.container.add_argument(
+            "-d",
+            "--dev",
+            dest="dev",
+            action="store_true",
+            help=("debug + auto reload"),
+        )
+        self.container.add_argument(
+            "--auto-tls",
+            dest="auto_tls",
+            action="store_true",
+            help=(
+                "Create a temporary TLS certificate for local development "
+                "(requires mkcert or trustme)"
+            ),
+        )
 
 
 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/compat.py

@@ -1,8 +1,9 @@
 import asyncio
 import os
 import signal
+import sys
 
-from sys import argv
+from typing import Awaitable
 
 from multidict import CIMultiDict  # type: ignore
 
@@ -47,12 +48,12 @@ class Header(CIMultiDict):
         return self.getall(key, default=[])
 
 
-use_trio = argv[0].endswith("hypercorn") and "trio" in argv
+use_trio = sys.argv[0].endswith("hypercorn") and "trio" in sys.argv
 
 if use_trio:  # pragma: no cover
     import trio  # type: ignore
 
-    def stat_async(path):
+    def stat_async(path) -> Awaitable[os.stat_result]:
         return trio.Path(path).stat()
 
     open_async = trio.open_file
@@ -72,7 +73,7 @@ def ctrlc_workaround_for_windows(app):
         """Asyncio wakeups to allow receiving SIGINT in Python"""
         while not die:
             # If someone else stopped the app, just exit
-            if app.is_stopping:
+            if app.state.is_stopping:
                 return
             # Windows Python blocks signal handlers while the event loop is
             # waiting for I/O. Frequent wakeups keep interrupts flowing.
@@ -89,3 +90,7 @@ def ctrlc_workaround_for_windows(app):
     die = False
     signal.signal(signal.SIGINT, ctrlc_handler)
     app.add_task(stay_active)
+
+
+def is_atty() -> bool:
+    return bool(sys.stdout and sys.stdout.isatty())

sanic/config.py

@@ -1,10 +1,14 @@
 from __future__ import annotations
 
+import sys
+
 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
@@ -12,34 +16,57 @@ from sanic.log import deprecation, 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,
     "KEEP_ALIVE_TIMEOUT": 5,  # 5 seconds
     "KEEP_ALIVE": True,
+    "LOCAL_CERT_CREATOR": LocalCertCreator.AUTO,
+    "LOCAL_TLS_KEY": _default,
+    "LOCAL_TLS_CERT": _default,
+    "LOCALHOST": "localhost",
     "MOTD": True,
     "MOTD_DISPLAY": {},
     "NOISY_EXCEPTIONS": False,
     "PROXIES_COUNT": None,
     "REAL_IP_HEADER": None,
-    "REGISTER": True,
     "REQUEST_BUFFER_SIZE": 65536,  # 64 KiB
     "REQUEST_MAX_HEADER_SIZE": 8192,  # 8 KiB, but cannot exceed 16384
     "REQUEST_ID_HEADER": "X-Request-ID",
     "REQUEST_MAX_SIZE": 100000000,  # 100 megabytes
     "REQUEST_TIMEOUT": 60,  # 60 seconds
     "RESPONSE_TIMEOUT": 60,  # 60 seconds
+    "TLS_CERT_PASSWORD": "",
+    "TOUCHUP": _default,
     "USE_UVLOOP": _default,
-    "WEBSOCKET_MAX_SIZE": 2 ** 20,  # 1 megabyte
+    "WEBSOCKET_MAX_SIZE": 2**20,  # 1 megabyte
     "WEBSOCKET_PING_INTERVAL": 20,
     "WEBSOCKET_PING_TIMEOUT": 20,
 }
@@ -63,17 +90,24 @@ 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
     KEEP_ALIVE_TIMEOUT: int
     KEEP_ALIVE: bool
-    NOISY_EXCEPTIONS: bool
+    LOCAL_CERT_CREATOR: Union[str, LocalCertCreator]
+    LOCAL_TLS_KEY: Union[Path, str, Default]
+    LOCAL_TLS_CERT: Union[Path, str, Default]
+    LOCALHOST: str
     MOTD: bool
     MOTD_DISPLAY: Dict[str, str]
+    NOISY_EXCEPTIONS: bool
     PROXIES_COUNT: Optional[int]
     REAL_IP_HEADER: Optional[str]
-    REGISTER: bool
     REQUEST_BUFFER_SIZE: int
     REQUEST_MAX_HEADER_SIZE: int
     REQUEST_ID_HEADER: str
@@ -81,6 +115,8 @@ class Config(dict, metaclass=DescriptorMeta):
     REQUEST_TIMEOUT: int
     RESPONSE_TIMEOUT: int
     SERVER_NAME: str
+    TLS_CERT_PASSWORD: str
+    TOUCHUP: Union[Default, bool]
     USE_UVLOOP: Union[Default, bool]
     WEBSOCKET_MAX_SIZE: int
     WEBSOCKET_PING_INTERVAL: int
@@ -98,7 +134,6 @@ class Config(dict, metaclass=DescriptorMeta):
         super().__init__({**DEFAULT_CONFIG, **defaults})
 
         self._converters = [str, str_to_bool, float, int]
-        self._LOGO = ""
 
         if converters:
             for converter in converters:
@@ -114,32 +149,38 @@ class Config(dict, metaclass=DescriptorMeta):
             self.load_environment_vars(SANIC_PREFIX)
 
         self._configure_header_size()
+        self._configure_warnings()
         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:
-        if attr in self.__class__.__setters__:
+    def __setattr__(self, attr: str, value: Any) -> None:
+        self.update({attr: value})
+
+    def __setitem__(self, attr: str, value: Any) -> None:
+        self.update({attr: value})
+
+    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)
+            for k in {**kwargs}.keys()
+            if k in self.__class__.__setters__
+        }
+
+        for key, value in setters.items():
             try:
-                super().__setattr__(attr, value)
+                super().__setattr__(key, value)
             except AttributeError:
                 ...
-            else:
-                return None
-        self.update({attr: value})
 
-    def __setitem__(self, attr, value) -> None:
-        self.update({attr: value})
-
-    def update(self, *other, **kwargs) -> None:
-        other_mapping = {k: v for item in other for k, v in dict(item).items()}
-        super().update(*other, **kwargs)
-        for attr, value in {**other_mapping, **kwargs}.items():
+        super().update(**kwargs)
+        for attr, value in {**setters, **kwargs}.items():
             self._post_set(attr, value)
 
     def _post_set(self, attr, value) -> None:
@@ -150,17 +191,15 @@ class Config(dict, metaclass=DescriptorMeta):
                 "REQUEST_MAX_SIZE",
             ):
                 self._configure_header_size()
-            elif attr == "LOGO":
-                self._LOGO = value
-                deprecation(
-                    "Setting the config.LOGO is deprecated and will no longer "
-                    "be supported starting in v22.6.",
-                    22.6,
-                )
 
-    @property
-    def LOGO(self):
-        return self._LOGO
+        if attr == "LOCAL_CERT_CREATOR" and not isinstance(
+            self.LOCAL_CERT_CREATOR, LocalCertCreator
+        ):
+            self.LOCAL_CERT_CREATOR = LocalCertCreator[
+                self.LOCAL_CERT_CREATOR.upper()
+            ]
+        elif attr == "DEPRECATION_FILTER":
+            self._configure_warnings()
 
     @property
     def FALLBACK_ERROR_FORMAT(self) -> str:
@@ -188,6 +227,13 @@ 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)
 
@@ -221,9 +267,12 @@ 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):
                 continue
+            if not key.isupper():
+                lower_case_var_found = True
 
             _, config_key = key.split(prefix, 1)
 
@@ -233,6 +282,12 @@ 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

@@ -24,5 +24,25 @@ class HTTPMethod(str, Enum):
     DELETE = auto()
 
 
+class LocalCertCreator(str, Enum):
+    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/errorpages.py

@@ -19,7 +19,7 @@ import typing as t
 from functools import partial
 from traceback import extract_tb
 
-from sanic.exceptions import InvalidUsage, SanicException
+from sanic.exceptions import BadRequest, SanicException
 from sanic.helpers import STATUS_CODES
 from sanic.request import Request
 from sanic.response import HTTPResponse, html, json, text
@@ -506,7 +506,7 @@ def exception_response(
                         # $ curl localhost:8000 -d '{"foo": "bar"}'
                         # And provide them with JSONRenderer
                         renderer = JSONRenderer if request.json else base
-                    except InvalidUsage:
+                    except BadRequest:
                         renderer = base
             else:
                 renderer = RENDERERS_BY_CONFIG.get(render_format, renderer)

sanic/exceptions.py

@@ -1,8 +1,13 @@
+from asyncio import CancelledError
 from typing import Any, Dict, Optional, Union
 
 from sanic.helpers import STATUS_CODES
 
 
+class RequestCancelled(CancelledError):
+    quiet = True
+
+
 class SanicException(Exception):
     message: str = ""
 
@@ -42,7 +47,7 @@ class NotFound(SanicException):
     quiet = True
 
 
-class InvalidUsage(SanicException):
+class BadRequest(SanicException):
     """
     **Status**: 400 Bad Request
     """
@@ -51,7 +56,14 @@ class InvalidUsage(SanicException):
     quiet = True
 
 
-class MethodNotSupported(SanicException):
+InvalidUsage = BadRequest
+
+
+class BadURL(BadRequest):
+    ...
+
+
+class MethodNotAllowed(SanicException):
     """
     **Status**: 405 Method Not Allowed
     """
@@ -64,6 +76,9 @@ class MethodNotSupported(SanicException):
         self.headers = {"Allow": ", ".join(allowed_methods)}
 
 
+MethodNotSupported = MethodNotAllowed
+
+
 class ServerError(SanicException):
     """
     **Status**: 500 Internal Server Error
@@ -125,19 +140,19 @@ class PayloadTooLarge(SanicException):
     quiet = True
 
 
-class HeaderNotFound(InvalidUsage):
+class HeaderNotFound(BadRequest):
     """
     **Status**: 400 Bad Request
     """
 
 
-class InvalidHeader(InvalidUsage):
+class InvalidHeader(BadRequest):
     """
     **Status**: 400 Bad Request
     """
 
 
-class ContentRangeError(SanicException):
+class RangeNotSatisfiable(SanicException):
     """
     **Status**: 416 Range Not Satisfiable
     """
@@ -150,7 +165,10 @@ class ContentRangeError(SanicException):
         self.headers = {"Content-Range": f"bytes */{content_range.total}"}
 
 
-class HeaderExpectationFailed(SanicException):
+ContentRangeError = RangeNotSatisfiable
+
+
+class ExpectationFailed(SanicException):
     """
     **Status**: 417 Expectation Failed
     """
@@ -159,6 +177,9 @@ class HeaderExpectationFailed(SanicException):
     quiet = True
 
 
+HeaderExpectationFailed = ExpectationFailed
+
+
 class Forbidden(SanicException):
     """
     **Status**: 403 Forbidden
@@ -168,7 +189,7 @@ class Forbidden(SanicException):
     quiet = True
 
 
-class InvalidRangeType(ContentRangeError):
+class InvalidRangeType(RangeNotSatisfiable):
     """
     **Status**: 416 Range Not Satisfiable
     """

sanic/handlers.py

@@ -1,25 +1,317 @@
 from __future__ import annotations
 
-from inspect import signature
-from typing import Dict, List, Optional, Tuple, Type, Union
+from functools import partial
+from inspect import isawaitable
+from traceback import format_exc
+from typing import Dict, List, Optional, Tuple, Type
 
-from sanic.config import Config
-from sanic.errorpages import (
-    DEFAULT_FORMAT,
-    BaseRenderer,
-    HTMLRenderer,
-    exception_response,
-)
+from sanic_routing import Route
+
+from sanic.errorpages import BaseRenderer, TextRenderer, exception_response
 from sanic.exceptions import (
-    ContentRangeError,
     HeaderNotFound,
     InvalidRangeType,
+    RangeNotSatisfiable,
     SanicException,
+    ServerError,
 )
-from sanic.helpers import Default, _default
-from sanic.log import deprecation, error_logger
+from sanic.http.constants import Stage
+from sanic.log import deprecation, error_logger, logger
 from sanic.models.handler_types import RouteHandler
-from sanic.response import text
+from sanic.request import Request
+from sanic.response import BaseHTTPResponse, HTTPResponse, ResponseStream, text
+from sanic.touchup import TouchUpMeta
+
+
+class RequestHandler:
+    def __init__(self, func, request_middleware, response_middleware):
+        self.func = func.func if isinstance(func, RequestHandler) else func
+        self.request_middleware = request_middleware
+        self.response_middleware = response_middleware
+
+    def __call__(self, *args, **kwargs):
+        return self.func(*args, **kwargs)
+
+
+class RequestManager(metaclass=TouchUpMeta):
+    __touchup__ = (
+        "cleanup",
+        "run_request_middleware",
+        "run_response_middleware",
+    )
+    __slots__ = (
+        "handler",
+        "request_middleware_run",
+        "request_middleware",
+        "request",
+        "response_middleware_run",
+        "response_middleware",
+    )
+    request: Request
+
+    def __init__(self, request: Request):
+        self.request_middleware_run = False
+        self.response_middleware_run = False
+        self.handler = self._noop
+        self.set_request(request)
+
+    @classmethod
+    def create(cls, request: Request) -> RequestManager:
+        return cls(request)
+
+    def set_request(self, request: Request):
+        request._manager = self
+        self.request = request
+        self.request_middleware = request.app.request_middleware
+        self.response_middleware = request.app.response_middleware
+
+    async def handle(self):
+        route = self.resolve_route()
+
+        if self.handler is None:
+            await self.error(
+                ServerError(
+                    (
+                        "'None' was returned while requesting a "
+                        "handler from the router"
+                    )
+                )
+            )
+            return
+
+        if (
+            self.request.stream
+            and self.request.stream.request_body
+            and not route.ctx.ignore_body
+        ):
+            await self.receive_body()
+
+        await self.lifecycle(
+            partial(self.handler, self.request, **self.request.match_info)
+        )
+
+    async def lifecycle(self, handler, raise_exception: bool = False):
+        response: Optional[BaseHTTPResponse] = None
+        if not self.request_middleware_run and self.request_middleware:
+            response = await self.run(
+                self.run_request_middleware, raise_exception
+            )
+
+        if not response:
+            # Run response handler
+            response = await self.run(handler, raise_exception)
+
+        if not self.response_middleware_run and self.response_middleware:
+            response = await self.run(
+                partial(self.run_response_middleware, response),
+                raise_exception,
+            )
+
+        await self.cleanup(response)
+
+    async def run(
+        self, operation, raise_exception: bool = False
+    ) -> Optional[BaseHTTPResponse]:
+        try:
+            response = operation()
+            if isawaitable(response):
+                response = await response
+        except Exception as e:
+            if raise_exception:
+                raise
+            response = await self.error(e)
+        return response
+
+    async def error(self, exception: Exception):
+        error_handler = self.request.app.error_handler
+        if (
+            self.request.stream is not None
+            and self.request.stream.stage is not Stage.HANDLER
+        ):
+            error_logger.exception(exception, exc_info=True)
+            logger.error(
+                "The error response will not be sent to the client for "
+                f'the following exception:"{exception}". A previous response '
+                "has at least partially been sent."
+            )
+
+            handler = error_handler._lookup(
+                exception, self.request.name if self.request else None
+            )
+            if handler:
+                logger.warning(
+                    "An error occurred while handling the request after at "
+                    "least some part of the response was sent to the client. "
+                    "The response from your custom exception handler "
+                    f"{handler.__name__} will not be sent to the client."
+                    "Exception handlers should only be used to generate the "
+                    "exception responses. If you would like to perform any "
+                    "other action on a raised exception, consider using a "
+                    "signal handler like "
+                    '`@app.signal("http.lifecycle.exception")`\n'
+                    "For further information, please see the docs: "
+                    "https://sanicframework.org/en/guide/advanced/"
+                    "signals.html",
+                )
+            return
+
+        try:
+            await self.lifecycle(
+                partial(error_handler.response, self.request, exception), True
+            )
+        except Exception as e:
+            if isinstance(e, SanicException):
+                response = error_handler.default(self.request, e)
+            elif self.request.app.debug:
+                response = HTTPResponse(
+                    (
+                        f"Error while handling error: {e}\n"
+                        f"Stack: {format_exc()}"
+                    ),
+                    status=500,
+                )
+            else:
+                error_logger.exception(e)
+                response = HTTPResponse(
+                    "An error occurred while handling an error", status=500
+                )
+            return response
+        return None
+
+    async def cleanup(self, response: Optional[BaseHTTPResponse]):
+        if self.request.responded:
+            if response is not None:
+                error_logger.error(
+                    "The response object returned by the route handler "
+                    "will not be sent to client. The request has already "
+                    "been responded to."
+                )
+            if self.request.stream is not None:
+                response = self.request.stream.response
+        elif response is not None:
+            self.request.reset_response()
+            response = await self.request.respond(response)  # type: ignore
+        elif not hasattr(self.handler, "is_websocket"):
+            response = self.request.stream.response  # type: ignore
+
+        if isinstance(response, BaseHTTPResponse):
+            await self.request.app.dispatch(
+                "http.lifecycle.response",
+                inline=True,
+                context={"request": self.request, "response": response},
+            )
+            await response.send(end_stream=True)
+        elif isinstance(response, ResponseStream):
+            await response(self.request)  # type: ignore
+            await response.eof()  # type: ignore
+            await self.request.app.dispatch(
+                "http.lifecycle.response",
+                inline=True,
+                context={"request": self.request, "response": response},
+            )
+        else:
+            if not hasattr(self.handler, "is_websocket"):
+                raise ServerError(
+                    f"Invalid response type {response!r} "
+                    "(need HTTPResponse)"
+                )
+
+    async def receive_body(self):
+        if hasattr(self.handler, "is_stream"):
+            # Streaming handler: lift the size limit
+            self.request.stream.request_max_size = float("inf")
+        else:
+            # Non-streaming handler: preload body
+            await self.request.receive_body()
+
+    async def run_request_middleware(self) -> Optional[BaseHTTPResponse]:
+        self.request._request_middleware_started = True
+        self.request_middleware_run = True
+
+        for middleware in self.request_middleware:
+            await self.request.app.dispatch(
+                "http.middleware.before",
+                inline=True,
+                context={"request": self.request, "response": None},
+                condition={"attach_to": "request"},
+            )
+
+            try:
+                response = await self.run(partial(middleware, self.request))
+            except Exception:
+                error_logger.exception(
+                    "Exception occurred in one of request middleware handlers"
+                )
+                raise
+
+            await self.request.app.dispatch(
+                "http.middleware.after",
+                inline=True,
+                context={"request": self.request, "response": None},
+                condition={"attach_to": "request"},
+            )
+
+            if response:
+                return response
+        return None
+
+    async def run_response_middleware(
+        self, response: BaseHTTPResponse
+    ) -> BaseHTTPResponse:
+        self.response_middleware_run = True
+        for middleware in self.response_middleware:
+            await self.request.app.dispatch(
+                "http.middleware.before",
+                inline=True,
+                context={"request": self.request, "response": None},
+                condition={"attach_to": "request"},
+            )
+
+            try:
+                resp = await self.run(
+                    partial(middleware, self.request, response), True
+                )
+            except Exception as e:
+                error_logger.exception(
+                    "Exception occurred in one of response middleware handlers"
+                )
+                await self.error(e)
+                resp = None
+
+            await self.request.app.dispatch(
+                "http.middleware.after",
+                inline=True,
+                context={"request": self.request, "response": None},
+                condition={"attach_to": "request"},
+            )
+
+            if resp:
+                return resp
+        return response
+
+    def resolve_route(self) -> Route:
+        # Fetch handler from router
+        route, handler, kwargs = self.request.app.router.get(
+            self.request.path,
+            self.request.method,
+            self.request.headers.getone("host", None),
+        )
+
+        self.request._match_info = {**kwargs}
+        self.request.route = route
+        self.handler = handler
+
+        if handler and handler.request_middleware:
+            self.request_middleware = handler.request_middleware
+
+        if handler and handler.response_middleware:
+            self.response_middleware = handler.response_middleware
+
+        return route
+
+    @staticmethod
+    def _noop(_):
+        ...
 
 
 class ErrorHandler:
@@ -35,119 +327,48 @@ class ErrorHandler:
 
     """
 
-    # Beginning in v22.3, the base renderer will be TextRenderer
     def __init__(
         self,
-        fallback: Union[str, Default] = _default,
-        base: Type[BaseRenderer] = HTMLRenderer,
+        base: Type[BaseRenderer] = TextRenderer,
     ):
-        self.handlers: List[Tuple[Type[BaseException], RouteHandler]] = []
         self.cached_handlers: Dict[
             Tuple[Type[BaseException], Optional[str]], Optional[RouteHandler]
         ] = {}
         self.debug = False
-        self._fallback = fallback
         self.base = base
 
-        if fallback is not _default:
-            self._warn_fallback_deprecation()
-
-    @property
-    def fallback(self):
-        # This is for backwards compat and can be removed in v22.6
-        if self._fallback is _default:
-            return DEFAULT_FORMAT
-        return self._fallback
-
-    @fallback.setter
-    def fallback(self, value: str):
-        self._warn_fallback_deprecation()
-        if not isinstance(value, str):
-            raise SanicException(
-                f"Cannot set error handler fallback to: value={value}"
-            )
-        self._fallback = value
-
-    @staticmethod
-    def _warn_fallback_deprecation():
+    @classmethod
+    def finalize(cls, *args, **kwargs):
         deprecation(
-            "Setting the ErrorHandler fallback value directly is "
-            "deprecated and no longer supported. This feature will "
-            "be removed in v22.6. Instead, use "
-            "app.config.FALLBACK_ERROR_FORMAT.",
-            22.6,
+            "ErrorHandler.finalize is deprecated and no longer needed. "
+            "Please remove update your code to remove it. ",
+            22.12,
         )
 
-    @classmethod
-    def _get_fallback_value(cls, error_handler: ErrorHandler, config: Config):
-        if error_handler._fallback is not _default:
-            if config._FALLBACK_ERROR_FORMAT is _default:
-                return error_handler.fallback
-
-            error_logger.warning(
-                "Conflicting error fallback values were found in the "
-                "error handler and in the app.config while handling an "
-                "exception. Using the value from app.config."
-            )
-        return config.FALLBACK_ERROR_FORMAT
-
-    @classmethod
-    def finalize(
-        cls,
-        error_handler: ErrorHandler,
-        fallback: Optional[str] = None,
-        config: Optional[Config] = None,
-    ):
-        if fallback:
-            deprecation(
-                "Setting the ErrorHandler fallback value via finalize() "
-                "is deprecated and no longer supported. This feature will "
-                "be removed in v22.6. Instead, use "
-                "app.config.FALLBACK_ERROR_FORMAT.",
-                22.6,
-            )
-
-        if config is None:
-            deprecation(
-                "Starting in v22.3, config will be a required argument "
-                "for ErrorHandler.finalize().",
-                22.3,
-            )
-
-        if fallback and fallback != DEFAULT_FORMAT:
-            if error_handler._fallback is not _default:
-                error_logger.warning(
-                    f"Setting the fallback value to {fallback}. This changes "
-                    "the current non-default value "
-                    f"'{error_handler._fallback}'."
-                )
-            error_handler._fallback = fallback
-
-        if not isinstance(error_handler, cls):
-            error_logger.warning(
-                f"Error handler is non-conforming: {type(error_handler)}"
-            )
-
-        sig = signature(error_handler.lookup)
-        if len(sig.parameters) == 1:
-            deprecation(
-                "You are using a deprecated error handler. The lookup "
-                "method should accept two positional parameters: "
-                "(exception, route_name: Optional[str]). "
-                "Until you upgrade your ErrorHandler.lookup, Blueprint "
-                "specific exceptions will not work properly. Beginning "
-                "in v22.3, the legacy style lookup method will not "
-                "work at all.",
-                22.3,
-            )
-            legacy_lookup = error_handler._legacy_lookup
-            error_handler._lookup = legacy_lookup  # type: ignore
-
     def _full_lookup(self, exception, route_name: Optional[str] = None):
         return self.lookup(exception, route_name)
 
-    def _legacy_lookup(self, exception, route_name: Optional[str] = None):
-        return self.lookup(exception)
+    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__"
+
+            error_logger.warning(
+                f"Duplicate exception handler definition on: route={name} "
+                f"and exception={exc}"
+            )
+            deprecation(
+                "A duplicate exception handler definition was discovered. "
+                "This may cause unintended consequences. A warning has been "
+                "issued now, but it will not be allowed starting in v23.3.",
+                23.3,
+            )
+        self.cached_handlers[key] = handler
 
     def add(self, exception, handler, route_names: Optional[List[str]] = None):
         """
@@ -162,14 +383,11 @@ class ErrorHandler:
 
         :return: None
         """
-        # self.handlers is deprecated and will be removed in version 22.3
-        self.handlers.append((exception, handler))
-
         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):
         """
@@ -236,7 +454,7 @@ class ErrorHandler:
         except Exception:
             try:
                 url = repr(request.url)
-            except AttributeError:
+            except AttributeError:  # no cov
                 url = "unknown"
             response_message = (
                 "Exception raised in exception handler " '"%s" for uri: %s'
@@ -265,7 +483,7 @@ class ErrorHandler:
         :return:
         """
         self.log(request, exception)
-        fallback = ErrorHandler._get_fallback_value(self, request.app.config)
+        fallback = request.app.config.FALLBACK_ERROR_FORMAT
         return exception_response(
             request,
             exception,
@@ -281,7 +499,7 @@ class ErrorHandler:
         if quiet is False or noisy is True:
             try:
                 url = repr(request.url)
-            except AttributeError:
+            except AttributeError:  # no cov
                 url = "unknown"
 
             error_logger.exception(
@@ -324,18 +542,18 @@ class ContentRangeHandler:
         try:
             self.start = int(start_b) if start_b else None
         except ValueError:
-            raise ContentRangeError(
+            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 ContentRangeError(
+            raise RangeNotSatisfiable(
                 "'%s' is invalid for Content Range" % (end_b,), self
             )
         if self.end is None:
             if self.start is None:
-                raise ContentRangeError(
+                raise RangeNotSatisfiable(
                     "Invalid for Content Range parameters", self
                 )
             else:
@@ -347,7 +565,7 @@ class ContentRangeHandler:
                 self.start = self.total - self.end
                 self.end = self.total - 1
         if self.start >= self.end:
-            raise ContentRangeError(
+            raise RangeNotSatisfiable(
                 "Invalid for Content Range parameters", self
             )
         self.size = self.end - self.start + 1

sanic/headers.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import re
 
-from typing import Any, Dict, Iterable, List, Optional, Tuple, Union
+from typing import Any, Dict, Iterable, List, Optional, Set, Tuple, Union
 from urllib.parse import unquote
 
 from sanic.exceptions import InvalidHeader
@@ -18,7 +18,7 @@ Options = Dict[str, Union[int, str]]  # key=value fields in various headers
 OptionsIterable = Iterable[Tuple[str, str]]  # May contain duplicate keys
 
 _token, _quoted = r"([\w!#$%&'*+\-.^_`|~]+)", r'"([^"]*)"'
-_param = re.compile(fr";\s*{_token}=(?:{_token}|{_quoted})", re.ASCII)
+_param = re.compile(rf";\s*{_token}=(?:{_token}|{_quoted})", re.ASCII)
 _firefox_quote_escape = re.compile(r'\\"(?!; |\s*$)')
 _ipv6 = "(?:[0-9A-Fa-f]{0,4}:){2,7}[0-9A-Fa-f]{0,4}"
 _ipv6_re = re.compile(_ipv6)
@@ -394,3 +394,17 @@ def parse_accept(accept: str) -> AcceptContainer:
     return AcceptContainer(
         sorted(accept_list, key=_sort_accept_value, reverse=True)
     )
+
+
+def parse_credentials(
+    header: Optional[str],
+    prefixes: Union[List, Tuple, Set] = None,
+) -> Tuple[Optional[str], Optional[str]]:
+    """Parses any header with the aim to retrieve any credentials from it."""
+    if not prefixes or not isinstance(prefixes, (list, tuple, set)):
+        prefixes = ("Basic", "Bearer", "Token")
+    if header is not None:
+        for prefix in prefixes:
+            if prefix in header:
+                return prefix, header.partition(prefix)[-1].strip()
+    return None, header

sanic/http/__init__.py

@@ -0,0 +1,6 @@
+from .constants import Stage
+from .http1 import Http
+from .http3 import Http3
+
+
+__all__ = ("Http", "Stage", "Http3")

sanic/http/constants.py

@@ -0,0 +1,29 @@
+from enum import Enum, IntEnum
+
+
+class Stage(Enum):
+    """
+    Enum for representing the stage of the request/response cycle
+
+    | ``IDLE``  Waiting for request
+    | ``REQUEST``  Request headers being received
+    | ``HANDLER``  Headers done, handler running
+    | ``RESPONSE``  Response headers sent, body in progress
+    | ``FAILED``  Unrecoverable state (error while sending response)
+    |
+    """
+
+    IDLE = 0  # Waiting for request
+    REQUEST = 1  # Request headers being received
+    HANDLER = 3  # Headers done, handler running
+    RESPONSE = 4  # Response headers sent, body in progress
+    FAILED = 100  # Unrecoverable state (error while sending response)
+
+
+class HTTP(IntEnum):
+    VERSION_1 = 1
+    VERSION_3 = 3
+
+    def display(self) -> str:
+        value = 1.1 if self.value == 1 else self.value
+        return f"HTTP/{value}"

sanic/http/http1.py

@@ -3,71 +3,52 @@ from __future__ import annotations
 from typing import TYPE_CHECKING, Optional
 
 
-if TYPE_CHECKING:  # no cov
+if TYPE_CHECKING:
     from sanic.request import Request
     from sanic.response import BaseHTTPResponse
 
 from asyncio import CancelledError, sleep
-from enum import Enum
 
 from sanic.compat import Header
 from sanic.exceptions import (
-    HeaderExpectationFailed,
-    InvalidUsage,
+    BadRequest,
+    ExpectationFailed,
     PayloadTooLarge,
+    RequestCancelled,
     ServerError,
-    ServiceUnavailable,
 )
 from sanic.headers import format_http1_response
 from sanic.helpers import has_message_body
+from sanic.http.constants import Stage
+from sanic.http.stream import Stream
 from sanic.log import access_logger, error_logger, logger
 from sanic.touchup import TouchUpMeta
 
 
-class Stage(Enum):
-    """
-    Enum for representing the stage of the request/response cycle
-
-    | ``IDLE``  Waiting for request
-    | ``REQUEST``  Request headers being received
-    | ``HANDLER``  Headers done, handler running
-    | ``RESPONSE``  Response headers sent, body in progress
-    | ``FAILED``  Unrecoverable state (error while sending response)
-    |
-    """
-
-    IDLE = 0  # Waiting for request
-    REQUEST = 1  # Request headers being received
-    HANDLER = 3  # Headers done, handler running
-    RESPONSE = 4  # Response headers sent, body in progress
-    FAILED = 100  # Unrecoverable state (error while sending response)
-
-
 HTTP_CONTINUE = b"HTTP/1.1 100 Continue\r\n\r\n"
 
 
-class Http(metaclass=TouchUpMeta):
+class Http(Stream, metaclass=TouchUpMeta):
     """
-    Internal helper for managing the HTTP request/response cycle
+    Internal helper for managing the HTTP/1.1 request/response cycle
 
     :raises ServerError:
     :raises PayloadTooLarge:
     :raises Exception:
-    :raises InvalidUsage:
-    :raises HeaderExpectationFailed:
+    :raises BadRequest:
+    :raises ExpectationFailed:
     :raises RuntimeError:
     :raises ServerError:
     :raises ServerError:
-    :raises InvalidUsage:
-    :raises InvalidUsage:
-    :raises InvalidUsage:
+    :raises BadRequest:
+    :raises BadRequest:
+    :raises BadRequest:
     :raises PayloadTooLarge:
     :raises RuntimeError:
     """
 
     HEADER_CEILING = 16_384
     HEADER_MAX_SIZE = 0
-
     __touchup__ = (
         "http1_request_header",
         "http1_response_header",
@@ -143,7 +124,8 @@ class Http(metaclass=TouchUpMeta):
 
                 self.stage = Stage.HANDLER
                 self.request.conn_info = self.protocol.conn_info
-                await self.protocol.request_handler(self.request)
+
+                await self.request.manager.handle()
 
                 # Handler finished, response should've been sent
                 if self.stage is Stage.HANDLER and not self.upgrade_websocket:
@@ -151,7 +133,7 @@ class Http(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(
@@ -159,7 +141,11 @@ class Http(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)
@@ -248,7 +234,7 @@ class Http(metaclass=TouchUpMeta):
 
                 headers.append(h)
         except Exception:
-            raise InvalidUsage("Bad Request")
+            raise BadRequest("Bad Request")
 
         headers_instance = Header(headers)
         self.upgrade_websocket = (
@@ -265,6 +251,8 @@ class Http(metaclass=TouchUpMeta):
             transport=self.protocol.transport,
             app=self.protocol.app,
         )
+        self.protocol.request_handler.create(request)
+        self.protocol.request_class._current.set(request)
         await self.dispatch(
             "http.lifecycle.request",
             inline=True,
@@ -281,7 +269,7 @@ class Http(metaclass=TouchUpMeta):
                 if expect.lower() == "100-continue":
                     self.expecting_continue = True
                 else:
-                    raise HeaderExpectationFailed(f"Unknown Expect: {expect}")
+                    raise ExpectationFailed(f"Unknown Expect: {expect}")
 
             if headers.getone("transfer-encoding", None) == "chunked":
                 self.request_body = "chunked"
@@ -352,6 +340,12 @@ class Http(metaclass=TouchUpMeta):
             self.response_func = self.head_response_ignored
 
         headers["connection"] = "keep-alive" if self.keep_alive else "close"
+
+        # This header may be removed or modified by the AltSvcCheck Touchup
+        # service. At server start, we either remove this header from ever
+        # being assigned, or we change the value as required.
+        headers["alt-svc"] = ""
+
         ret = format_http1_response(status, res.processed_headers)
         if data:
             ret += data
@@ -431,12 +425,11 @@ class Http(metaclass=TouchUpMeta):
 
         # From request and handler states we can respond, otherwise be silent
         if self.stage is Stage.HANDLER:
-            app = self.protocol.app
-
             if self.request is None:
                 self.create_empty_request()
+                self.protocol.request_handler.create(self.request)
 
-            await app.handle_exception(self.request, exception)
+            await self.request.manager.error(exception)
 
     def create_empty_request(self) -> None:
         """
@@ -510,7 +503,7 @@ class Http(metaclass=TouchUpMeta):
 
                 if len(buf) > 64:
                     self.keep_alive = False
-                    raise InvalidUsage("Bad chunked encoding")
+                    raise BadRequest("Bad chunked encoding")
 
                 await self._receive_more()
 
@@ -518,14 +511,14 @@ class Http(metaclass=TouchUpMeta):
                 size = int(buf[2:pos].split(b";", 1)[0].decode(), 16)
             except Exception:
                 self.keep_alive = False
-                raise InvalidUsage("Bad chunked encoding")
+                raise BadRequest("Bad chunked encoding")
 
             if size <= 0:
                 self.request_body = None
 
                 if size < 0:
                     self.keep_alive = False
-                    raise InvalidUsage("Bad chunked encoding")
+                    raise BadRequest("Bad chunked encoding")
 
                 # Consume CRLF, chunk size 0 and the two CRLF that follow
                 pos += 4

sanic/http/http3.py

@@ -0,0 +1,406 @@
+from __future__ import annotations
+
+import asyncio
+
+from abc import ABC, abstractmethod
+from ssl import SSLContext
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    Dict,
+    List,
+    Optional,
+    Tuple,
+    Union,
+    cast,
+)
+
+from sanic.compat import Header
+from sanic.constants import LocalCertCreator
+from sanic.exceptions import 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, SanicSSLContext
+from sanic.log import Colors, logger
+from sanic.models.protocol_types import TransportProtocol
+from sanic.models.server_types import ConnInfo
+
+
+try:
+    from aioquic.h0.connection import H0_ALPN, H0Connection
+    from aioquic.h3.connection import H3_ALPN, H3Connection
+    from aioquic.h3.events import (
+        DatagramReceived,
+        DataReceived,
+        H3Event,
+        HeadersReceived,
+        WebTransportStreamDataReceived,
+    )
+    from aioquic.quic.configuration import QuicConfiguration
+    from aioquic.tls import SessionTicket
+
+    HTTP3_AVAILABLE = True
+except ModuleNotFoundError:  # no cov
+    HTTP3_AVAILABLE = False
+
+if TYPE_CHECKING:
+    from sanic import Sanic
+    from sanic.request import Request
+    from sanic.response import BaseHTTPResponse
+    from sanic.server.protocols.http_protocol import Http3Protocol
+
+    HttpConnection = Union[H0Connection, H3Connection]
+
+
+class HTTP3Transport(TransportProtocol):
+    __slots__ = ("_protocol",)
+
+    def __init__(self, protocol: Http3Protocol):
+        self._protocol = protocol
+
+    def get_protocol(self) -> Http3Protocol:
+        return self._protocol
+
+    def get_extra_info(self, info: str, default: Any = None) -> Any:
+        if (
+            info in ("socket", "sockname", "peername")
+            and self._protocol._transport
+        ):
+            return self._protocol._transport.get_extra_info(info, default)
+        elif info == "network_paths":
+            return self._protocol._quic._network_paths
+        elif info == "ssl_context":
+            return self._protocol.app.state.ssl
+        return default
+
+
+class Receiver(ABC):
+    future: asyncio.Future
+
+    def __init__(self, transmit, protocol, request: Request) -> None:
+        self.transmit = transmit
+        self.protocol = protocol
+        self.request = request
+
+    @abstractmethod
+    async def run(self):  # no cov
+        ...
+
+
+class HTTPReceiver(Receiver, Stream):
+    stage: Stage
+    request: Request
+
+    def __init__(self, *args, **kwargs) -> None:
+        super().__init__(*args, **kwargs)
+        self.request_body = None
+        self.stage = Stage.IDLE
+        self.headers_sent = False
+        self.response: Optional[BaseHTTPResponse] = None
+        self.request_max_size = self.protocol.request_max_size
+        self.request_bytes = 0
+
+    async def run(self, exception: Optional[Exception] = None):
+        self.stage = Stage.HANDLER
+        self.head_only = self.request.method.upper() == "HEAD"
+
+        if exception:
+            logger.info(  # no cov
+                f"{Colors.BLUE}[exception]: "
+                f"{Colors.RED}{exception}{Colors.END}",
+                exc_info=True,
+                extra={"verbosity": 1},
+            )
+            await self.error_response(exception)
+        else:
+            try:
+                logger.info(  # no cov
+                    f"{Colors.BLUE}[request]:{Colors.END} {self.request}",
+                    extra={"verbosity": 1},
+                )
+                await self.protocol.request_handler(self.request)
+            except Exception as e:  # no cov
+                # This should largely be handled within the request handler.
+                # But, just in case...
+                await self.run(e)
+        self.stage = Stage.IDLE
+
+    async def error_response(self, exception: Exception) -> None:
+        """
+        Handle response when exception encountered
+        """
+        # From request and handler states we can respond, otherwise be silent
+        app = self.protocol.app
+
+        await app.handle_exception(self.request, exception)
+
+    def _prepare_headers(
+        self, response: BaseHTTPResponse
+    ) -> List[Tuple[bytes, bytes]]:
+        size = len(response.body) if response.body else 0
+        headers = response.headers
+        status = response.status
+
+        if not has_message_body(status) and (
+            size
+            or "content-length" in headers
+            or "transfer-encoding" in headers
+        ):
+            headers.pop("content-length", None)
+            headers.pop("transfer-encoding", None)
+            logger.warning(  # no cov
+                f"Message body set in response on {self.request.path}. "
+                f"A {status} response may only have headers, no body."
+            )
+        elif "content-length" not in headers:
+            if size:
+                headers["content-length"] = size
+            else:
+                headers["transfer-encoding"] = "chunked"
+
+        headers = [
+            (b":status", str(response.status).encode()),
+            *response.processed_headers,
+        ]
+        return headers
+
+    def send_headers(self) -> None:
+        logger.debug(  # no cov
+            f"{Colors.BLUE}[send]: {Colors.GREEN}HEADERS{Colors.END}",
+            extra={"verbosity": 2},
+        )
+        if not self.response:
+            raise RuntimeError("no response")
+
+        response = self.response
+        headers = self._prepare_headers(response)
+
+        self.protocol.connection.send_headers(
+            stream_id=self.request.stream_id,
+            headers=headers,
+        )
+        self.headers_sent = True
+        self.stage = Stage.RESPONSE
+
+        if self.response.body and not self.head_only:
+            self._send(self.response.body, False)
+        elif self.head_only:
+            self.future.cancel()
+
+    def respond(self, response: BaseHTTPResponse) -> BaseHTTPResponse:
+        logger.debug(  # no cov
+            f"{Colors.BLUE}[respond]:{Colors.END} {response}",
+            extra={"verbosity": 2},
+        )
+
+        if self.stage is not Stage.HANDLER:
+            self.stage = Stage.FAILED
+            raise RuntimeError("Response already started")
+
+        # Disconnect any earlier but unused response object
+        if self.response is not None:
+            self.response.stream = None
+
+        self.response, response.stream = response, self
+
+        return response
+
+    def receive_body(self, data: bytes) -> None:
+        self.request_bytes += len(data)
+        if self.request_bytes > self.request_max_size:
+            raise PayloadTooLarge("Request body exceeds the size limit")
+
+        self.request.body += data
+
+    async def send(self, data: bytes, end_stream: bool) -> None:
+        logger.debug(  # no cov
+            f"{Colors.BLUE}[send]: {Colors.GREEN}data={data.decode()} "
+            f"end_stream={end_stream}{Colors.END}",
+            extra={"verbosity": 2},
+        )
+        self._send(data, end_stream)
+
+    def _send(self, data: bytes, end_stream: bool) -> None:
+        if not self.headers_sent:
+            self.send_headers()
+        if self.stage is not Stage.RESPONSE:
+            raise ServerError(f"not ready to send: {self.stage}")
+
+        # Chunked
+        if (
+            self.response
+            and self.response.headers.get("transfer-encoding") == "chunked"
+        ):
+            size = len(data)
+            if end_stream:
+                data = (
+                    b"%x\r\n%b\r\n0\r\n\r\n" % (size, data)
+                    if size
+                    else b"0\r\n\r\n"
+                )
+            elif size:
+                data = b"%x\r\n%b\r\n" % (size, data)
+
+        logger.debug(  # no cov
+            f"{Colors.BLUE}[transmitting]{Colors.END}",
+            extra={"verbosity": 2},
+        )
+        self.protocol.connection.send_data(
+            stream_id=self.request.stream_id,
+            data=data,
+            end_stream=end_stream,
+        )
+        self.transmit()
+
+        if end_stream:
+            self.stage = Stage.IDLE
+
+
+class WebsocketReceiver(Receiver):  # noqa
+    async def run(self):
+        ...
+
+
+class WebTransportReceiver(Receiver):  # noqa
+    async def run(self):
+        ...
+
+
+class Http3:
+    """
+    Internal helper for managing the HTTP/3 request/response cycle
+    """
+
+    if HTTP3_AVAILABLE:
+        HANDLER_PROPERTY_MAPPING = {
+            DataReceived: "stream_id",
+            HeadersReceived: "stream_id",
+            DatagramReceived: "flow_id",
+            WebTransportStreamDataReceived: "session_id",
+        }
+
+    def __init__(
+        self,
+        protocol: Http3Protocol,
+        transmit: Callable[[], None],
+    ) -> None:
+        self.protocol = protocol
+        self.transmit = transmit
+        self.receivers: Dict[int, Receiver] = {}
+
+    def http_event_received(self, event: H3Event) -> None:
+        logger.debug(  # no cov
+            f"{Colors.BLUE}[http_event_received]: "
+            f"{Colors.YELLOW}{event}{Colors.END}",
+            extra={"verbosity": 2},
+        )
+        receiver, created_new = self.get_or_make_receiver(event)
+        receiver = cast(HTTPReceiver, receiver)
+
+        if isinstance(event, HeadersReceived) and created_new:
+            receiver.future = asyncio.ensure_future(receiver.run())
+        elif isinstance(event, DataReceived):
+            try:
+                receiver.receive_body(event.data)
+            except Exception as e:
+                receiver.future.cancel()
+                receiver.future = asyncio.ensure_future(receiver.run(e))
+        else:
+            ...  # Intentionally here to help out Touchup
+            logger.debug(  # no cov
+                f"{Colors.RED}DOING NOTHING{Colors.END}",
+                extra={"verbosity": 2},
+            )
+
+    def get_or_make_receiver(self, event: H3Event) -> Tuple[Receiver, bool]:
+        if (
+            isinstance(event, HeadersReceived)
+            and event.stream_id not in self.receivers
+        ):
+            request = self._make_request(event)
+            receiver = HTTPReceiver(self.transmit, self.protocol, request)
+            request.stream = receiver
+
+            self.receivers[event.stream_id] = receiver
+            return receiver, True
+        else:
+            ident = getattr(event, self.HANDLER_PROPERTY_MAPPING[type(event)])
+            return self.receivers[ident], False
+
+    def get_receiver_by_stream_id(self, stream_id: int) -> Receiver:
+        return self.receivers[stream_id]
+
+    def _make_request(self, event: HeadersReceived) -> Request:
+        headers = Header(((k.decode(), v.decode()) for k, v in event.headers))
+        method = headers[":method"]
+        path = headers[":path"]
+        scheme = headers.pop(":scheme", "")
+        authority = headers.pop(":authority", "")
+
+        if authority:
+            headers["host"] = authority
+
+        transport = HTTP3Transport(self.protocol)
+        request = self.protocol.request_class(
+            path.encode(),
+            headers,
+            "3",
+            method,
+            transport,
+            self.protocol.app,
+            b"",
+        )
+        request.conn_info = ConnInfo(transport)
+        request._stream_id = event.stream_id
+        request._scheme = scheme
+
+        return request
+
+
+class SessionTicketStore:
+    """
+    Simple in-memory store for session tickets.
+    """
+
+    def __init__(self) -> None:
+        self.tickets: Dict[bytes, SessionTicket] = {}
+
+    def add(self, ticket: SessionTicket) -> None:
+        self.tickets[ticket.ticket] = ticket
+
+    def pop(self, label: bytes) -> Optional[SessionTicket]:
+        return self.tickets.pop(label, None)
+
+
+def get_config(
+    app: Sanic, ssl: Union[SanicSSLContext, CertSelector, SSLContext]
+):
+    # TODO:
+    # - 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])
+    if app.config.LOCAL_CERT_CREATOR is LocalCertCreator.TRUSTME:
+        raise SanicException(
+            "Sorry, you cannot currently use trustme as a local certificate "
+            "generator for an HTTP/3 server. This is not yet supported. You "
+            "should be able to use mkcert instead. For more information, see: "
+            "https://github.com/aiortc/aioquic/issues/295."
+        )
+    if not isinstance(ssl, SanicSSLContext):
+        raise SanicException("SSLContext is not SanicSSLContext")
+
+    config = QuicConfiguration(
+        alpn_protocols=H3_ALPN + H0_ALPN + ["siduck"],
+        is_client=False,
+        max_datagram_frame_size=65536,
+    )
+    password = app.config.TLS_CERT_PASSWORD or None
+
+    config.load_cert_chain(
+        ssl.sanic["cert"], ssl.sanic["key"], password=password
+    )
+
+    return config

sanic/http/stream.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, Optional, Tuple, Union
+
+from sanic.http.constants import Stage
+
+
+if TYPE_CHECKING:
+    from sanic.response import BaseHTTPResponse
+    from sanic.server.protocols.http_protocol import HttpProtocol
+
+
+class Stream:
+    stage: Stage
+    response: Optional[BaseHTTPResponse]
+    protocol: HttpProtocol
+    url: Optional[str]
+    request_body: Optional[bytes]
+    request_max_size: Union[int, float]
+
+    __touchup__: Tuple[str, ...] = tuple()
+    __slots__ = ()
+
+    def respond(
+        self, response: BaseHTTPResponse
+    ) -> BaseHTTPResponse:  # no cov
+        raise NotImplementedError("Not implemented")

sanic/http/tls/__init__.py

@@ -0,0 +1,5 @@
+from .context import process_to_context
+from .creators import get_ssl_context
+
+
+__all__ = ("get_ssl_context", "process_to_context")

sanic/http/tls/context.py

@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 import os
 import ssl
 
-from typing import Iterable, Optional, Union
+from typing import Any, Dict, Iterable, Optional, Union
 
 from sanic.log import logger
 
@@ -77,65 +79,6 @@ def load_cert_dir(p: str) -> ssl.SSLContext:
     return CertSimple(certfile, keyfile)
 
 
-class CertSimple(ssl.SSLContext):
-    """A wrapper for creating SSLContext with a sanic attribute."""
-
-    def __new__(cls, cert, key, **kw):
-        # 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)
-        if not certfile or not keyfile:
-            raise ValueError("SSL dict needs filenames for cert and key.")
-        subject = {}
-        if "names" not in kw:
-            cert = ssl._ssl._test_decode_cert(certfile)  # type: ignore
-            kw["names"] = [
-                name
-                for t, name in cert["subjectAltName"]
-                if t in ["DNS", "IP Address"]
-            ]
-            subject = {k: v for item in cert["subject"] for k, v in item}
-        self = create_context(certfile, keyfile, password)
-        self.__class__ = cls
-        self.sanic = {**subject, **kw}
-        return self
-
-    def __init__(self, cert, key, **kw):
-        pass  # Do not call super().__init__ because it is already initialized
-
-
-class CertSelector(ssl.SSLContext):
-    """Automatically select SSL certificate based on the hostname that the
-    client is trying to access, via SSL SNI. Paths to certificate folders
-    with privkey.pem and fullchain.pem in them should be provided, and
-    will be matched in the order given whenever there is a new connection.
-    """
-
-    def __new__(cls, ctxs):
-        return super().__new__(cls)
-
-    def __init__(self, ctxs: Iterable[Optional[ssl.SSLContext]]):
-        super().__init__()
-        self.sni_callback = selector_sni_callback  # type: ignore
-        self.sanic_select = []
-        self.sanic_fallback = None
-        all_names = []
-        for i, ctx in enumerate(ctxs):
-            if not ctx:
-                continue
-            names = dict(getattr(ctx, "sanic", {})).get("names", [])
-            all_names += names
-            self.sanic_select.append(ctx)
-            if i == 0:
-                self.sanic_fallback = ctx
-        if not all_names:
-            raise ValueError(
-                "No certificates with SubjectAlternativeNames found."
-            )
-        logger.info(f"Certificate vhosts: {', '.join(all_names)}")
-
-
 def find_cert(self: CertSelector, server_name: str):
     """Find the first certificate that matches the given SNI.
 
@@ -194,3 +137,73 @@ def server_name_callback(
 ) -> None:
     """Store the received SNI as sslobj.sanic_server_name."""
     sslobj.sanic_server_name = server_name  # type: ignore
+
+
+class SanicSSLContext(ssl.SSLContext):
+    sanic: Dict[str, os.PathLike]
+
+    @classmethod
+    def create_from_ssl_context(cls, context: ssl.SSLContext):
+        context.__class__ = cls
+        return context
+
+
+class CertSimple(SanicSSLContext):
+    """A wrapper for creating SSLContext with a sanic attribute."""
+
+    sanic: Dict[str, Any]
+
+    def __new__(cls, cert, key, **kw):
+        # 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)
+        if not certfile or not keyfile:
+            raise ValueError("SSL dict needs filenames for cert and key.")
+        subject = {}
+        if "names" not in kw:
+            cert = ssl._ssl._test_decode_cert(certfile)  # type: ignore
+            kw["names"] = [
+                name
+                for t, name in cert["subjectAltName"]
+                if t in ["DNS", "IP Address"]
+            ]
+            subject = {k: v for item in cert["subject"] for k, v in item}
+        self = create_context(certfile, keyfile, password)
+        self.__class__ = cls
+        self.sanic = {**subject, **kw}
+        return self
+
+    def __init__(self, cert, key, **kw):
+        pass  # Do not call super().__init__ because it is already initialized
+
+
+class CertSelector(ssl.SSLContext):
+    """Automatically select SSL certificate based on the hostname that the
+    client is trying to access, via SSL SNI. Paths to certificate folders
+    with privkey.pem and fullchain.pem in them should be provided, and
+    will be matched in the order given whenever there is a new connection.
+    """
+
+    def __new__(cls, ctxs):
+        return super().__new__(cls)
+
+    def __init__(self, ctxs: Iterable[Optional[ssl.SSLContext]]):
+        super().__init__()
+        self.sni_callback = selector_sni_callback  # type: ignore
+        self.sanic_select = []
+        self.sanic_fallback = None
+        all_names = []
+        for i, ctx in enumerate(ctxs):
+            if not ctx:
+                continue
+            names = dict(getattr(ctx, "sanic", {})).get("names", [])
+            all_names += names
+            self.sanic_select.append(ctx)
+            if i == 0:
+                self.sanic_fallback = ctx
+        if not all_names:
+            raise ValueError(
+                "No certificates with SubjectAlternativeNames found."
+            )
+        logger.info(f"Certificate vhosts: {', '.join(all_names)}")

sanic/http/tls/creators.py

@@ -0,0 +1,286 @@
+from __future__ import annotations
+
+import ssl
+import subprocess
+import sys
+
+from abc import ABC, abstractmethod
+from contextlib import suppress
+from pathlib import Path
+from tempfile import mkdtemp
+from types import ModuleType
+from typing import TYPE_CHECKING, Optional, Tuple, Type, Union, cast
+
+from sanic.application.constants import Mode
+from sanic.application.spinner import loading
+from sanic.constants import (
+    DEFAULT_LOCAL_TLS_CERT,
+    DEFAULT_LOCAL_TLS_KEY,
+    LocalCertCreator,
+)
+from sanic.exceptions import SanicException
+from sanic.helpers import Default
+from sanic.http.tls.context import CertSimple, SanicSSLContext
+
+
+try:
+    import trustme
+
+    TRUSTME_INSTALLED = True
+except (ImportError, ModuleNotFoundError):
+    trustme = ModuleType("trustme")
+    TRUSTME_INSTALLED = False
+
+if TYPE_CHECKING:
+    from sanic import Sanic
+
+
+# Only allow secure ciphers, notably leaving out AES-CBC mode
+# OpenSSL chooses ECDSA or RSA depending on the cert in use
+CIPHERS_TLS12 = [
+    "ECDHE-ECDSA-CHACHA20-POLY1305",
+    "ECDHE-ECDSA-AES256-GCM-SHA384",
+    "ECDHE-ECDSA-AES128-GCM-SHA256",
+    "ECDHE-RSA-CHACHA20-POLY1305",
+    "ECDHE-RSA-AES256-GCM-SHA384",
+    "ECDHE-RSA-AES128-GCM-SHA256",
+]
+
+
+def _make_path(maybe_path: Union[Path, str], tmpdir: Optional[Path]) -> Path:
+    if isinstance(maybe_path, Path):
+        return maybe_path
+    else:
+        path = Path(maybe_path)
+        if not path.exists():
+            if not tmpdir:
+                raise RuntimeError("Reached an unknown state. No tmpdir.")
+            return tmpdir / maybe_path
+
+    return path
+
+
+def get_ssl_context(
+    app: Sanic, ssl: Optional[ssl.SSLContext]
+) -> ssl.SSLContext:
+    if ssl:
+        return ssl
+
+    if app.state.mode is Mode.PRODUCTION:
+        raise SanicException(
+            "Cannot run Sanic as an HTTPS server in PRODUCTION mode "
+            "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: ___."
+        )
+
+    creator = CertCreator.select(
+        app,
+        cast(LocalCertCreator, app.config.LOCAL_CERT_CREATOR),
+        app.config.LOCAL_TLS_KEY,
+        app.config.LOCAL_TLS_CERT,
+    )
+    context = creator.generate_cert(app.config.LOCALHOST)
+    return context
+
+
+class CertCreator(ABC):
+    def __init__(self, app, key, cert) -> None:
+        self.app = app
+        self.key = key
+        self.cert = cert
+        self.tmpdir = None
+
+        if isinstance(self.key, Default) or isinstance(self.cert, Default):
+            self.tmpdir = Path(mkdtemp())
+
+        key = (
+            DEFAULT_LOCAL_TLS_KEY
+            if isinstance(self.key, Default)
+            else self.key
+        )
+        cert = (
+            DEFAULT_LOCAL_TLS_CERT
+            if isinstance(self.cert, Default)
+            else self.cert
+        )
+
+        self.key_path = _make_path(key, self.tmpdir)
+        self.cert_path = _make_path(cert, self.tmpdir)
+
+    @abstractmethod
+    def check_supported(self) -> None:  # no cov
+        ...
+
+    @abstractmethod
+    def generate_cert(self, localhost: str) -> ssl.SSLContext:  # no cov
+        ...
+
+    @classmethod
+    def select(
+        cls,
+        app: Sanic,
+        cert_creator: LocalCertCreator,
+        local_tls_key,
+        local_tls_cert,
+    ) -> CertCreator:
+
+        creator: Optional[CertCreator] = None
+
+        cert_creator_options: Tuple[
+            Tuple[Type[CertCreator], LocalCertCreator], ...
+        ] = (
+            (MkcertCreator, LocalCertCreator.MKCERT),
+            (TrustmeCreator, LocalCertCreator.TRUSTME),
+        )
+        for creator_class, local_creator in cert_creator_options:
+            creator = cls._try_select(
+                app,
+                creator,
+                creator_class,
+                local_creator,
+                cert_creator,
+                local_tls_key,
+                local_tls_cert,
+            )
+            if creator:
+                break
+
+        if not creator:
+            raise SanicException(
+                "Sanic could not find package to create a TLS certificate. "
+                "You must have either mkcert or trustme installed. See "
+                "_____ for more details."
+            )
+
+        return creator
+
+    @staticmethod
+    def _try_select(
+        app: Sanic,
+        creator: Optional[CertCreator],
+        creator_class: Type[CertCreator],
+        creator_requirement: LocalCertCreator,
+        creator_requested: LocalCertCreator,
+        local_tls_key,
+        local_tls_cert,
+    ):
+        if creator or (
+            creator_requested is not LocalCertCreator.AUTO
+            and creator_requested is not creator_requirement
+        ):
+            return creator
+
+        instance = creator_class(app, local_tls_key, local_tls_cert)
+        try:
+            instance.check_supported()
+        except SanicException:
+            if creator_requested is creator_requirement:
+                raise
+            else:
+                return None
+
+        return instance
+
+
+class MkcertCreator(CertCreator):
+    def check_supported(self) -> None:
+        try:
+            subprocess.run(  # nosec B603 B607
+                ["mkcert", "-help"],
+                check=True,
+                stderr=subprocess.DEVNULL,
+                stdout=subprocess.DEVNULL,
+            )
+        except Exception as e:
+            raise SanicException(
+                "Sanic is attempting to use mkcert to generate local TLS "
+                "certificates since you did not supply a certificate, but "
+                "one is required. Sanic cannot proceed since mkcert does not "
+                "appear to be installed. Alternatively, you can use trustme. "
+                "Please install mkcert, trustme, or supply TLS certificates "
+                "to proceed. Installation instructions can be found here: "
+                "https://github.com/FiloSottile/mkcert.\n"
+                "Find out more information about your options here: "
+                "_____"
+            ) from e
+
+    def generate_cert(self, localhost: str) -> ssl.SSLContext:
+        try:
+            if not self.cert_path.exists():
+                message = "Generating TLS certificate"
+                # TODO: Validate input for security
+                with loading(message):
+                    cmd = [
+                        "mkcert",
+                        "-key-file",
+                        str(self.key_path),
+                        "-cert-file",
+                        str(self.cert_path),
+                        localhost,
+                    ]
+                    resp = subprocess.run(  # nosec B603
+                        cmd,
+                        check=True,
+                        stdout=subprocess.PIPE,
+                        stderr=subprocess.STDOUT,
+                        text=True,
+                    )
+                sys.stdout.write("\r" + " " * (len(message) + 4))
+                sys.stdout.flush()
+                sys.stdout.write(resp.stdout)
+        finally:
+
+            @self.app.main_process_stop
+            async def cleanup(*_):  # no cov
+                if self.tmpdir:
+                    with suppress(FileNotFoundError):
+                        self.key_path.unlink()
+                        self.cert_path.unlink()
+                    self.tmpdir.rmdir()
+
+        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):
+    def check_supported(self) -> None:
+        if not TRUSTME_INSTALLED:
+            raise SanicException(
+                "Sanic is attempting to use trustme to generate local TLS "
+                "certificates since you did not supply a certificate, but "
+                "one is required. Sanic cannot proceed since trustme does not "
+                "appear to be installed. Alternatively, you can use mkcert. "
+                "Please install mkcert, trustme, or supply TLS certificates "
+                "to proceed. Installation instructions can be found here: "
+                "https://github.com/python-trio/trustme.\n"
+                "Find out more information about your options here: "
+                "_____"
+            )
+
+    def generate_cert(self, localhost: str) -> ssl.SSLContext:
+        context = SanicSSLContext.create_from_ssl_context(
+            ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+        )
+        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(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

@@ -5,8 +5,10 @@ from enum import Enum
 from typing import Any, Dict
 from warnings import warn
 
+from sanic.compat import is_atty
 
-LOGGING_CONFIG_DEFAULTS: Dict[str, Any] = dict(
+
+LOGGING_CONFIG_DEFAULTS: Dict[str, Any] = dict(  # no cov
     version=1,
     disable_existing_loggers=False,
     loggers={
@@ -55,35 +57,54 @@ LOGGING_CONFIG_DEFAULTS: Dict[str, Any] = dict(
         },
     },
 )
+"""
+Defult logging configuration
+"""
 
 
-class Colors(str, Enum):
+class Colors(str, Enum):  # no cov
     END = "\033[0m"
-    BLUE = "\033[01;34m"
-    GREEN = "\033[01;32m"
+    BOLD = "\033[1m"
+    BLUE = "\033[34m"
+    GREEN = "\033[32m"
+    PURPLE = "\033[35m"
+    RED = "\033[31m"
+    SANIC = "\033[38;2;255;13;104m"
     YELLOW = "\033[01;33m"
-    RED = "\033[01;31m"
 
 
-logger = logging.getLogger("sanic.root")
+class VerbosityFilter(logging.Filter):
+    verbosity: int = 0
+
+    def filter(self, record: logging.LogRecord) -> bool:
+        verbosity = getattr(record, "verbosity", 0)
+        return verbosity <= self.verbosity
+
+
+_verbosity_filter = VerbosityFilter()
+
+logger = logging.getLogger("sanic.root")  # no cov
 """
 General Sanic logger
 """
+logger.addFilter(_verbosity_filter)
 
-error_logger = logging.getLogger("sanic.error")
+error_logger = logging.getLogger("sanic.error")  # no cov
 """
 Logger used by Sanic for error logging
 """
+error_logger.addFilter(_verbosity_filter)
 
-access_logger = logging.getLogger("sanic.access")
+access_logger = logging.getLogger("sanic.access")  # no cov
 """
 Logger used by Sanic for access logging
 """
+access_logger.addFilter(_verbosity_filter)
 
 
-def deprecation(message: str, version: float):
+def deprecation(message: str, version: float):  # no cov
     version_info = f"[DEPRECATION v{version}] "
-    if sys.stdout.isatty():
+    if is_atty():
         version_info = f"{Colors.RED}{version_info}"
         message = f"{Colors.YELLOW}{message}{Colors.END}"
     warn(version_info + message, DeprecationWarning)

sanic/middleware.py

@@ -0,0 +1,66 @@
+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 = MiddlewareLocation.REQUEST,
+        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 __repr__(self) -> str:
+        name = getattr(self.func, "__name__", str(self.func))
+        return (
+            f"{self.__class__.__name__}("
+            f"func=<function {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()

sanic/mixins/listeners.py

@@ -1,8 +1,9 @@
 from enum import Enum, auto
 from functools import partial
-from typing import List, Optional, Union
+from typing import Callable, List, Optional, Union, overload
 
 from sanic.base.meta import SanicMeta
+from sanic.exceptions import BadRequest
 from sanic.models.futures import FutureListener
 from sanic.models.handler_types import ListenerType, Sanic
 
@@ -16,7 +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):
@@ -26,12 +32,33 @@ class ListenerMixin(metaclass=SanicMeta):
     def _apply_listener(self, listener: FutureListener):
         raise NotImplementedError  # noqa
 
+    @overload
+    def listener(
+        self,
+        listener_or_event: ListenerType[Sanic],
+        event_or_none: str,
+        apply: bool = ...,
+    ) -> ListenerType[Sanic]:
+        ...
+
+    @overload
+    def listener(
+        self,
+        listener_or_event: str,
+        event_or_none: None = ...,
+        apply: bool = ...,
+    ) -> Callable[[ListenerType[Sanic]], ListenerType[Sanic]]:
+        ...
+
     def listener(
         self,
         listener_or_event: Union[ListenerType[Sanic], str],
         event_or_none: Optional[str] = None,
         apply: bool = True,
-    ) -> ListenerType[Sanic]:
+    ) -> Union[
+        ListenerType[Sanic],
+        Callable[[ListenerType[Sanic]], ListenerType[Sanic]],
+    ]:
         """
         Create a listener from a decorated function.
 
@@ -49,7 +76,9 @@ class ListenerMixin(metaclass=SanicMeta):
         :param event: event to listen to
         """
 
-        def register_listener(listener, event):
+        def register_listener(
+            listener: ListenerType[Sanic], event: str
+        ) -> ListenerType[Sanic]:
             nonlocal apply
 
             future_listener = FutureListener(listener, event)
@@ -59,6 +88,10 @@ class ListenerMixin(metaclass=SanicMeta):
             return listener
 
         if callable(listener_or_event):
+            if event_or_none is None:
+                raise BadRequest(
+                    "Invalid event registration: Missing event name."
+                )
             return register_listener(listener_or_event, event_or_none)
         else:
             return partial(register_listener, event=listener_or_event)
@@ -68,11 +101,36 @@ 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]:
         return self.listener(listener, "main_process_stop")
 
+    def reload_process_start(
+        self, listener: ListenerType[Sanic]
+    ) -> ListenerType[Sanic]:
+        return self.listener(listener, "reload_process_start")
+
+    def reload_process_stop(
+        self, listener: ListenerType[Sanic]
+    ) -> 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 +1,18 @@
+from collections import deque
 from functools import partial
+from operator import attrgetter
 from typing import List
 
 from sanic.base.meta import SanicMeta
+from sanic.handlers import RequestHandler
+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] = []
 
@@ -13,12 +20,17 @@ 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.
-        Can either be called as *@app.middleware* or
-        *@app.middleware('request')*
+        Decorate and register middleware to be called before a request
+        is handled or after a response is created. Can either be called as
+        *@app.middleware* or *@app.middleware('request')*.
 
         `See user guide re: middleware
         <https://sanicframework.org/guide/basics/middleware.html>`__
@@ -30,6 +42,12 @@ 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:
@@ -46,14 +64,84 @@ class MiddlewareMixin(metaclass=SanicMeta):
                 register_middleware, attach_to=middleware_or_request
             )
 
-    def on_request(self, middleware=None):
-        if callable(middleware):
-            return self.middleware(middleware, "request")
-        else:
-            return partial(self.middleware, attach_to="request")
+    def on_request(self, middleware=None, *, priority=0):
+        """Register a middleware to be called before a request is handled.
 
-    def on_response(self, middleware=None):
+        This is the same as *@app.middleware('request')*.
+
+        :param: middleware: A callable that takes in request.
+        """
         if callable(middleware):
-            return self.middleware(middleware, "response")
+            return self.middleware(middleware, "request", priority=priority)
         else:
-            return partial(self.middleware, attach_to="response")
+            return partial(
+                self.middleware, attach_to="request", priority=priority
+            )
+
+    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')*.
+
+        :param: middleware:
+            A callable that takes in a request and its response.
+        """
+        if callable(middleware):
+            return self.middleware(middleware, "response", priority=priority)
+        else:
+            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.handler = RequestHandler(
+                route.handler,
+                deque(
+                    sorted(
+                        request_middleware,
+                        key=attrgetter("order"),
+                        reverse=True,
+                    )
+                ),
+                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

@@ -4,27 +4,31 @@ from functools import partial, wraps
 from inspect import getsource, signature
 from mimetypes import guess_type
 from os import path
-from pathlib import PurePath
-from re import sub
+from pathlib import Path, PurePath
 from textwrap import dedent
 from time import gmtime, strftime
-from typing import Any, Callable, Iterable, List, Optional, Set, Tuple, Union
+from typing import (
+    Any,
+    Callable,
+    Iterable,
+    List,
+    Optional,
+    Set,
+    Tuple,
+    Union,
+    cast,
+)
 from urllib.parse import unquote
 
-from sanic_routing.route import Route  # type: ignore
+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, HTTP_METHODS
 from sanic.errorpages import RESPONSE_MAPPING
-from sanic.exceptions import (
-    ContentRangeError,
-    FileNotFound,
-    HeaderNotFound,
-    InvalidUsage,
-)
+from sanic.exceptions import FileNotFound, HeaderNotFound, RangeNotSatisfiable
 from sanic.handlers import ContentRangeHandler
-from sanic.log import deprecation, error_logger
+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
@@ -221,7 +225,7 @@ class RouteMixin(metaclass=SanicMeta):
         stream: bool = False,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
+        **ctx_kwargs: Any,
     ) -> RouteHandler:
         """A helper method to register class instance or
         functions as a handler to the application url
@@ -282,8 +286,8 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **GET** *HTTP* method
 
@@ -299,17 +303,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"GET"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            version=version,
-            name=name,
-            ignore_body=ignore_body,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"GET"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                version=version,
+                name=name,
+                ignore_body=ignore_body,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def post(
@@ -322,8 +329,8 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **POST** *HTTP* method
 
@@ -339,17 +346,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"POST"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            stream=stream,
-            version=version,
-            name=name,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"POST"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                stream=stream,
+                version=version,
+                name=name,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def put(
@@ -362,8 +372,8 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **PUT** *HTTP* method
 
@@ -379,17 +389,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"PUT"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            stream=stream,
-            version=version,
-            name=name,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"PUT"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                stream=stream,
+                version=version,
+                name=name,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def head(
@@ -402,8 +415,8 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **HEAD** *HTTP* method
 
@@ -427,17 +440,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"HEAD"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            version=version,
-            name=name,
-            ignore_body=ignore_body,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"HEAD"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                version=version,
+                name=name,
+                ignore_body=ignore_body,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def options(
@@ -450,8 +466,8 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **OPTIONS** *HTTP* method
 
@@ -475,17 +491,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"OPTIONS"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            version=version,
-            name=name,
-            ignore_body=ignore_body,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"OPTIONS"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                version=version,
+                name=name,
+                ignore_body=ignore_body,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def patch(
@@ -498,8 +517,8 @@ class RouteMixin(metaclass=SanicMeta):
         name: Optional[str] = None,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **PATCH** *HTTP* method
 
@@ -525,17 +544,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"PATCH"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            stream=stream,
-            version=version,
-            name=name,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"PATCH"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                stream=stream,
+                version=version,
+                name=name,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def delete(
@@ -548,8 +570,8 @@ class RouteMixin(metaclass=SanicMeta):
         ignore_body: bool = True,
         version_prefix: str = "/v",
         error_format: Optional[str] = None,
-        **ctx_kwargs,
-    ) -> RouteWrapper:
+        **ctx_kwargs: Any,
+    ) -> RouteHandler:
         """
         Add an API URL under the **DELETE** *HTTP* method
 
@@ -565,17 +587,20 @@ class RouteMixin(metaclass=SanicMeta):
             will be appended to the route context (``route.ctx``)
         :return: Object decorated with :func:`route` method
         """
-        return self.route(
-            uri,
-            methods=frozenset({"DELETE"}),
-            host=host,
-            strict_slashes=strict_slashes,
-            version=version,
-            name=name,
-            ignore_body=ignore_body,
-            version_prefix=version_prefix,
-            error_format=error_format,
-            **ctx_kwargs,
+        return cast(
+            RouteHandler,
+            self.route(
+                uri,
+                methods=frozenset({"DELETE"}),
+                host=host,
+                strict_slashes=strict_slashes,
+                version=version,
+                name=name,
+                ignore_body=ignore_body,
+                version_prefix=version_prefix,
+                error_format=error_format,
+                **ctx_kwargs,
+            ),
         )
 
     def websocket(
@@ -589,7 +614,7 @@ 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
@@ -633,7 +658,7 @@ 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.
@@ -670,18 +695,18 @@ class RouteMixin(metaclass=SanicMeta):
 
     def static(
         self,
-        uri,
+        uri: str,
         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,
+        pattern: str = r"/?.+",
+        use_modified_since: bool = True,
+        use_content_range: bool = False,
+        stream_large_files: bool = False,
+        name: str = "static",
+        host: Optional[str] = None,
+        strict_slashes: Optional[bool] = None,
+        content_type: Optional[bool] = None,
+        apply: bool = True,
+        resource_type: Optional[str] = None,
     ):
         """
         Register a root to serve files from. The input can either be a
@@ -775,32 +800,40 @@ class RouteMixin(metaclass=SanicMeta):
         content_type=None,
         __file_uri__=None,
     ):
-        # Using this to determine if the URL is trying to break out of the path
-        # served.  os.path.realpath seems to be very slow
-        if __file_uri__ and "../" in __file_uri__:
-            raise InvalidUsage("Invalid URL")
         # Merge served directory and requested file if provided
-        # 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
-        root_path = file_path = file_or_directory
-        if __file_uri__:
-            file_path = path.join(
-                file_or_directory, sub("^[/]*", "", __file_uri__)
-            )
+        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__,
+        )
 
-        # URL decode the path sent by the browser otherwise we won't be able to
-        # match filenames which got encoded (filenames with spaces etc)
-        file_path = path.abspath(unquote(file_path))
-        if not file_path.startswith(path.abspath(unquote(root_path))):
-            error_logger.exception(
-                f"File not found: path={file_or_directory}, "
-                f"relative_url={__file_uri__}"
-            )
-            raise 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
@@ -865,14 +898,10 @@ class RouteMixin(metaclass=SanicMeta):
                             file_path, headers=headers, _range=_range
                         )
                 return await file(file_path, headers=headers, _range=_range)
-        except ContentRangeError:
+        except RangeNotSatisfiable:
             raise
         except FileNotFoundError:
-            raise FileNotFound(
-                "File not found",
-                path=file_or_directory,
-                relative_url=__file_uri__,
-            )
+            raise not_found
         except Exception:
             error_logger.exception(
                 f"Exception in static request handler: "
@@ -929,6 +958,7 @@ class RouteMixin(metaclass=SanicMeta):
         # 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):
@@ -936,6 +966,7 @@ class RouteMixin(metaclass=SanicMeta):
                     "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
@@ -994,17 +1025,6 @@ class RouteMixin(metaclass=SanicMeta):
                 nonlocal types
 
                 with suppress(AttributeError):
-                    if node.value.func.id == "stream":  # type: ignore
-                        deprecation(
-                            "The sanic.response.stream method has been "
-                            "deprecated and will be removed in v22.6. Please "
-                            "upgrade your application to use the new style "
-                            "streaming pattern. See "
-                            "https://sanicframework.org/en/guide/advanced/"
-                            "streaming.html#response-streaming for more "
-                            "information.",
-                            22.6,
-                        )
                     checks = [node.value.func.id]  # type: ignore
                     if node.value.keywords:  # type: ignore
                         checks += [
@@ -1035,7 +1055,7 @@ class RouteMixin(metaclass=SanicMeta):
             raise AttributeError(
                 "Cannot use restricted route context: "
                 f"{restricted_arguments}. This limitation is only in place "
-                "until v22.3 when the restricted names will no longer be in"
+                "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."
             )

sanic/models/asgi.py

@@ -3,7 +3,8 @@ import sys
 
 from typing import Any, Awaitable, Callable, MutableMapping, Optional, Union
 
-from sanic.exceptions import InvalidUsage
+from sanic.exceptions import BadRequest
+from sanic.models.protocol_types import TransportProtocol
 from sanic.server.websockets.connection import WebSocketConnection
 
 
@@ -13,7 +14,7 @@ ASGISend = Callable[[ASGIMessage], Awaitable[None]]
 ASGIReceive = Callable[[], Awaitable[ASGIMessage]]
 
 
-class MockProtocol:
+class MockProtocol:  # no cov
     def __init__(self, transport: "MockTransport", loop):
         # This should be refactored when < 3.8 support is dropped
         self.transport = transport
@@ -56,7 +57,7 @@ class MockProtocol:
         await self._not_paused.wait()
 
 
-class MockTransport:
+class MockTransport(TransportProtocol):  # no cov
     _protocol: Optional[MockProtocol]
 
     def __init__(
@@ -68,23 +69,25 @@ class MockTransport:
         self._protocol = None
         self.loop = None
 
-    def get_protocol(self) -> MockProtocol:
+    def get_protocol(self) -> MockProtocol:  # type: ignore
         if not self._protocol:
             self._protocol = MockProtocol(self, self.loop)
         return self._protocol
 
-    def get_extra_info(self, info: str) -> Union[str, bool, None]:
+    def get_extra_info(
+        self, info: str, default=None
+    ) -> Optional[Union[str, bool]]:
         if info == "peername":
             return self.scope.get("client")
         elif info == "sslcontext":
             return self.scope.get("scheme") in ["https", "wss"]
-        return None
+        return default
 
     def get_websocket_connection(self) -> WebSocketConnection:
         try:
             return self._websocket_connection
         except AttributeError:
-            raise InvalidUsage("Improper websocket connection.")
+            raise BadRequest("Improper websocket connection.")
 
     def create_websocket_connection(
         self, send: ASGISend, receive: ASGIReceive

sanic/models/handler_types.py

@@ -1,11 +1,13 @@
 from asyncio.events import AbstractEventLoop
 from typing import Any, Callable, Coroutine, Optional, TypeVar, Union
 
+import sanic
+
 from sanic.request import Request
 from sanic.response import BaseHTTPResponse, HTTPResponse
 
 
-Sanic = TypeVar("Sanic")
+Sanic = TypeVar("Sanic", bound="sanic.Sanic")
 
 MiddlewareResponse = Union[
     Optional[HTTPResponse], Coroutine[Any, Any, Optional[HTTPResponse]]
@@ -18,8 +20,9 @@ ErrorMiddlewareType = Callable[
     [Request, BaseException], Optional[Coroutine[Any, Any, None]]
 ]
 MiddlewareType = Union[RequestMiddlewareType, ResponseMiddlewareType]
-ListenerType = Callable[
-    [Sanic, AbstractEventLoop], Optional[Coroutine[Any, Any, None]]
+ListenerType = Union[
+    Callable[[Sanic], Optional[Coroutine[Any, Any, None]]],
+    Callable[[Sanic, AbstractEventLoop], Optional[Coroutine[Any, Any, None]]],
 ]
 RouteHandler = Callable[..., Coroutine[Any, Any, Optional[HTTPResponse]]]
 SignalHandler = Callable[..., Coroutine[Any, Any, None]]

sanic/models/http_types.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+from base64 import b64decode
+from dataclasses import dataclass, field
+from typing import Optional
+
+
+@dataclass()
+class Credentials:
+    auth_type: Optional[str]
+    token: Optional[str]
+    _username: Optional[str] = field(default=None)
+    _password: Optional[str] = field(default=None)
+
+    def __post_init__(self):
+        if self._auth_is_basic:
+            self._username, self._password = (
+                b64decode(self.token.encode("utf-8")).decode().split(":")
+            )
+
+    @property
+    def username(self):
+        if not self._auth_is_basic:
+            raise AttributeError("Username is available for Basic Auth only")
+        return self._username
+
+    @property
+    def password(self):
+        if not self._auth_is_basic:
+            raise AttributeError("Password is available for Basic Auth only")
+        return self._password
+
+    @property
+    def _auth_is_basic(self) -> bool:
+        return self.auth_type == "Basic"

sanic/models/protocol_types.py

@@ -1,28 +1,22 @@
+from __future__ import annotations
+
 import sys
 
-from typing import Any, AnyStr, TypeVar, Union
+from asyncio import BaseTransport
+from typing import TYPE_CHECKING, Any, AnyStr
+
+
+if TYPE_CHECKING:
+    from sanic.models.asgi import ASGIScope
 
 
 if sys.version_info < (3, 8):
-    from asyncio import BaseTransport
-
-    # from sanic.models.asgi import MockTransport
-    MockTransport = TypeVar("MockTransport")
-
-    TransportProtocol = Union[MockTransport, BaseTransport]
     Range = Any
     HTMLProtocol = Any
 else:
     # Protocol is a 3.8+ feature
     from typing import Protocol
 
-    class TransportProtocol(Protocol):
-        def get_protocol(self):
-            ...
-
-        def get_extra_info(self, info: str) -> Union[str, bool, None]:
-            ...
-
     class HTMLProtocol(Protocol):
         def __html__(self) -> AnyStr:
             ...
@@ -42,3 +36,8 @@ else:
 
         def total(self) -> int:
             ...
+
+
+class TransportProtocol(BaseTransport):
+    scope: ASGIScope
+    __slots__ = ()

sanic/models/server_types.py

@@ -1,6 +1,8 @@
-from ssl import SSLObject
+from __future__ import annotations
+
+from ssl import SSLContext, SSLObject
 from types import SimpleNamespace
-from typing import Any, Dict, Optional
+from typing import Any, Dict, List, Optional
 
 from sanic.models.protocol_types import TransportProtocol
 
@@ -19,6 +21,7 @@ class ConnInfo:
         "client",
         "client_ip",
         "ctx",
+        "lost",
         "peername",
         "server_port",
         "server",
@@ -26,10 +29,12 @@ class ConnInfo:
         "sockname",
         "ssl",
         "cert",
+        "network_paths",
     )
 
     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
@@ -38,17 +43,22 @@ class ConnInfo:
         self.ssl = False
         self.server_name = ""
         self.cert: Dict[str, Any] = {}
+        self.network_paths: List[Any] = []
         sslobj: Optional[SSLObject] = transport.get_extra_info(
             "ssl_object"
         )  # type: ignore
+        sslctx: Optional[SSLContext] = transport.get_extra_info(
+            "ssl_context"
+        )  # type: ignore
         if sslobj:
             self.ssl = True
             self.server_name = getattr(sslobj, "sanic_server_name", None) or ""
             self.cert = dict(getattr(sslobj.context, "sanic", {}))
+        if sslctx and not self.cert:
+            self.cert = dict(getattr(sslctx, "sanic", {}))
         if isinstance(addr, str):  # UNIX socket
             self.server = unix or addr
             return
-
         # IPv4 (ip, port) or IPv6 (ip, port, flowinfo, scopeid)
         if isinstance(addr, tuple):
             self.server = addr[0] if len(addr) == 2 else f"[{addr[0]}]"
@@ -57,6 +67,9 @@ class ConnInfo:
             if addr[1] != (443 if self.ssl else 80):
                 self.server = f"{self.server}:{addr[1]}"
         self.peername = addr = transport.get_extra_info("peername")
+        self.network_paths = transport.get_extra_info(  # type: ignore
+            "network_paths"
+        )
 
         if isinstance(addr, tuple):
             self.client = addr[0] if len(addr) == 2 else f"[{addr[0]}]"

sanic/request.py

@@ -1,5 +1,8 @@
 from __future__ import annotations
 
+from contextvars import ContextVar
+from functools import partial
+from inspect import isawaitable
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -12,10 +15,16 @@ from typing import (
     Union,
 )
 
-from sanic_routing.route import Route  # type: ignore
+from sanic_routing.route import Route
+
+from sanic.http.constants import HTTP  # type: ignore
+from sanic.http.stream import Stream
+from sanic.models.asgi import ASGIScope
+from sanic.models.http_types import Credentials
 
 
-if TYPE_CHECKING:  # no cov
+if TYPE_CHECKING:
+    from sanic.handlers import RequestManager
     from sanic.server import ConnInfo
     from sanic.app import Sanic
 
@@ -27,22 +36,29 @@ from http.cookies import SimpleCookie
 from types import SimpleNamespace
 from urllib.parse import parse_qs, parse_qsl, unquote, urlunparse
 
-from httptools import parse_url  # type: ignore
+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.exceptions import InvalidUsage, ServerError
+from sanic.compat import Header
+from sanic.constants import (
+    CACHEABLE_HTTP_METHODS,
+    DEFAULT_HTTP_CONTENT_TYPE,
+    IDEMPOTENT_HTTP_METHODS,
+    SAFE_HTTP_METHODS,
+)
+from sanic.exceptions import BadRequest, BadURL, ServerError
 from sanic.headers import (
     AcceptContainer,
     Options,
     parse_accept,
     parse_content_header,
+    parse_credentials,
     parse_forwarded,
     parse_host,
     parse_xforwarded,
 )
-from sanic.http import Http, Stage
-from sanic.log import error_logger, logger
+from sanic.http import Stage
+from sanic.log import deprecation, error_logger, logger
 from sanic.models.protocol_types import TransportProtocol
 from sanic.response import BaseHTTPResponse, HTTPResponse
 
@@ -77,16 +93,23 @@ class Request:
     Properties of an HTTP request such as URL, headers, etc.
     """
 
+    _current: ContextVar[Request] = ContextVar("request")
+    _loads = json_loads
+
     __slots__ = (
         "__weakref__",
         "_cookies",
         "_id",
         "_ip",
+        "_manager",
         "_parsed_url",
         "_port",
         "_protocol",
         "_remote_addr",
+        "_request_middleware_started",
+        "_scheme",
         "_socket",
+        "_stream_id",
         "_match_info",
         "_name",
         "app",
@@ -98,14 +121,15 @@ class Request:
         "method",
         "parsed_accept",
         "parsed_args",
-        "parsed_not_grouped_args",
+        "parsed_credentials",
         "parsed_files",
         "parsed_form",
-        "parsed_json",
         "parsed_forwarded",
+        "parsed_json",
+        "parsed_not_grouped_args",
+        "parsed_token",
         "raw_url",
         "responded",
-        "request_middleware_started",
         "route",
         "stream",
         "transport",
@@ -121,12 +145,17 @@ class Request:
         transport: TransportProtocol,
         app: Sanic,
         head: bytes = b"",
+        stream_id: int = 0,
     ):
+
         self.raw_url = url_bytes
-        # TODO: Content-Encoding detection
-        self._parsed_url = parse_url(url_bytes)
+        try:
+            self._parsed_url = parse_url(url_bytes)
+        except HttpParserInvalidURLError:
+            raise BadURL(f"Bad URL: {url_bytes.decode()}")
         self._id: Optional[Union[uuid.UUID, str, int]] = None
         self._name: Optional[str] = None
+        self._stream_id = stream_id
         self.app = app
 
         self.headers = Header(headers)
@@ -141,31 +170,87 @@ class Request:
         self.ctx = SimpleNamespace()
         self.parsed_forwarded: Optional[Options] = None
         self.parsed_accept: Optional[AcceptContainer] = None
+        self.parsed_credentials: Optional[Credentials] = None
         self.parsed_json = None
-        self.parsed_form = None
-        self.parsed_files = 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_not_grouped_args: DefaultDict[
             Tuple[bool, bool, str, str], List[Tuple[str, str]]
         ] = defaultdict(list)
-        self.request_middleware_started = False
+        self._request_middleware_started = False
+        self.responded: bool = False
+        self.route: Optional[Route] = None
+        self.stream: Optional[Stream] = None
+        self._manager: Optional[RequestManager] = None
         self._cookies: Optional[Dict[str, str]] = None
         self._match_info: Dict[str, Any] = {}
-        self.stream: Optional[Http] = None
-        self.route: Optional[Route] = None
         self._protocol = None
-        self.responded: bool = False
 
     def __repr__(self):
         class_name = self.__class__.__name__
         return f"<{class_name}: {self.method} {self.path}>"
 
+    @classmethod
+    def get_current(cls) -> Request:
+        """
+        Retrieve the current request object
+
+        This implements `Context Variables
+        <https://docs.python.org/3/library/contextvars.html>`_
+        to allow for accessing the current request from anywhere.
+
+        Raises :exc:`sanic.exceptions.ServerError` if it is outside of
+        a request lifecycle.
+
+        .. code-block:: python
+
+            from sanic import Request
+
+            current_request = Request.get_current()
+
+        :return: the current :class:`sanic.request.Request`
+        """
+        request = cls._current.get(None)
+        if not request:
+            raise ServerError("No current request")
+        return request
+
     @classmethod
     def generate_id(*_):
         return uuid.uuid4()
 
+    @property
+    def request_middleware_started(self):
+        deprecation(
+            "Request.request_middleware_started has been deprecated and will"
+            "be removed. You should set a flag on the request context using"
+            "either middleware or signals if you need this feature.",
+            22.3,
+        )
+        return self._request_middleware_started
+
+    @property
+    def stream_id(self):
+        """
+        Access the HTTP/3 stream ID.
+
+        Raises :exc:`sanic.exceptions.ServerError` if it is not an
+        HTTP/3 request.
+        """
+        if self.protocol.version is not HTTP.VERSION_3:
+            raise ServerError(
+                "Stream ID is only a property of a HTTP/3 request"
+            )
+        return self._stream_id
+
+    @property
+    def manager(self):
+        return self._manager
+
     def reset_response(self):
         try:
             if (
@@ -189,6 +274,53 @@ class Request:
         headers: Optional[Union[Header, Dict[str, str]]] = None,
         content_type: Optional[str] = None,
     ):
+        """Respond to the request without returning.
+
+        This method can only be called once, as you can only respond once.
+        If no ``response`` argument is passed, one will be created from the
+        ``status``, ``headers`` and ``content_type`` arguments.
+
+        **The first typical usecase** is if you wish to respond to the
+        request without returning from the handler:
+
+        .. code-block:: python
+
+            @app.get("/")
+            async def handler(request: Request):
+                data = ...  # Process something
+
+                json_response = json({"data": data})
+                await request.respond(json_response)
+
+                # You are now free to continue executing other code
+                ...
+
+            @app.on_response
+            async def add_header(_, response: HTTPResponse):
+                # Middlewares still get executed as expected
+                response.headers["one"] = "two"
+
+        **The second possible usecase** is for when you want to directly
+        respond to the request:
+
+        .. code-block:: python
+
+            response = await request.respond(content_type="text/csv")
+            await response.send("foo,")
+            await response.send("bar")
+
+            # You can control the completion of the response by calling
+            # the 'eof()' method:
+            await response.eof()
+
+        :param response: response instance to send
+        :param status: status code to return in the response
+        :param headers: headers to return in the response
+        :param content_type: Content-Type header of the response
+        :return: final response being sent (may be different from the
+            ``response`` parameter because of middlewares) which can be
+            used to manually send data
+        """
         try:
             if self.stream is not None and self.stream.response:
                 raise ServerError("Second respond call is not allowed.")
@@ -205,16 +337,17 @@ class Request:
         # Connect the response
         if isinstance(response, BaseHTTPResponse) and self.stream:
             response = self.stream.respond(response)
+
+            if isawaitable(response):
+                response = await response  # type: ignore
         # Run response middleware
-        try:
-            response = await self.app._run_response_middleware(
-                self, response, request_name=self.name
-            )
-        except CancelledErrors:
-            raise
-        except Exception:
-            error_logger.exception(
-                "Exception occurred in one of response middleware handlers"
+        if (
+            self._manager
+            and not self._manager.response_middleware_run
+            and self._manager.response_middleware
+        ):
+            response = await self._manager.run(
+                partial(self._manager.run_response_middleware, response)
             )
         self.responded = True
         return response
@@ -232,7 +365,19 @@ class Request:
             self.body = b"".join([data async for data in self.stream])
 
     @property
-    def name(self):
+    def name(self) -> Optional[str]:
+        """
+        The route name
+
+        In the following pattern:
+
+        .. code-block::
+
+            <AppName>.[<BlueprintName>.]<HandlerName>
+
+        :return: Route name
+        :rtype: Optional[str]
+        """
         if self._name:
             return self._name
         elif self.route:
@@ -240,26 +385,47 @@ class Request:
         return None
 
     @property
-    def endpoint(self):
+    def endpoint(self) -> Optional[str]:
+        """
+        :return: Alias of :attr:`sanic.request.Request.name`
+        :rtype: Optional[str]
+        """
         return self.name
 
     @property
-    def uri_template(self):
-        return f"/{self.route.path}"
+    def uri_template(self) -> Optional[str]:
+        """
+        :return: The defined URI template
+        :rtype: Optional[str]
+        """
+        if self.route:
+            return f"/{self.route.path}"
+        return None
 
     @property
     def protocol(self):
+        """
+        :return: The HTTP protocol instance
+        """
         if not self._protocol:
             self._protocol = self.transport.get_protocol()
         return self._protocol
 
     @property
-    def raw_headers(self):
+    def raw_headers(self) -> bytes:
+        """
+        :return: The unparsed HTTP headers
+        :rtype: bytes
+        """
         _, headers = self.head.split(b"\r\n", 1)
         return bytes(headers)
 
     @property
-    def request_line(self):
+    def request_line(self) -> bytes:
+        """
+        :return: The first line of a HTTP request
+        :rtype: bytes
+        """
         reqline, _ = self.head.split(b"\r\n", 1)
         return bytes(reqline)
 
@@ -308,72 +474,131 @@ class Request:
         return self._id  # type: ignore
 
     @property
-    def json(self):
+    def json(self) -> Any:
+        """
+        :return: The request body parsed as JSON
+        :rtype: Any
+        """
         if self.parsed_json is None:
             self.load_json()
 
         return self.parsed_json
 
-    def load_json(self, loads=json_loads):
+    def load_json(self, loads=None):
         try:
+            if not loads:
+                loads = self.__class__._loads
+
             self.parsed_json = loads(self.body)
         except Exception:
             if not self.body:
                 return None
-            raise InvalidUsage("Failed when parsing body as json")
+            raise BadRequest("Failed when parsing body as json")
 
         return self.parsed_json
 
     @property
     def accept(self) -> AcceptContainer:
+        """
+        :return: The ``Accept`` header parsed
+        :rtype: AcceptContainer
+        """
         if self.parsed_accept is None:
             accept_header = self.headers.getone("accept", "")
             self.parsed_accept = parse_accept(accept_header)
         return self.parsed_accept
 
     @property
-    def token(self):
+    def token(self) -> Optional[str]:
         """Attempt to return the auth header token.
 
         :return: token related to request
         """
-        prefixes = ("Bearer", "Token")
-        auth_header = self.headers.getone("authorization", None)
+        if self.parsed_token is None:
+            prefixes = ("Bearer", "Token")
+            _, token = parse_credentials(
+                self.headers.getone("authorization", None), prefixes
+            )
+            self.parsed_token = token
+        return self.parsed_token
 
-        if auth_header is not None:
-            for prefix in prefixes:
-                if prefix in auth_header:
-                    return auth_header.partition(prefix)[-1].strip()
+    @property
+    def credentials(self) -> Optional[Credentials]:
+        """Attempt to return the auth header value.
 
-        return auth_header
+        Covers NoAuth, Basic Auth, Bearer Token, Api Token authentication
+        schemas.
+
+        :return: A Credentials object with token, or username and password
+                 related to the request
+        """
+        if self.parsed_credentials is None:
+            try:
+                prefix, credentials = parse_credentials(
+                    self.headers.getone("authorization", None)
+                )
+                if credentials:
+                    self.parsed_credentials = Credentials(
+                        auth_type=prefix, token=credentials
+                    )
+            except ValueError:
+                pass
+        return self.parsed_credentials
+
+    def get_form(
+        self, keep_blank_values: bool = False
+    ) -> Optional[RequestParameters]:
+        """
+        Method to extract and parse the form data from a request.
+
+        :param keep_blank_values:
+            Whether to discard blank values from the form data
+        :type keep_blank_values: bool
+        :return: the parsed form data
+        :rtype: Optional[RequestParameters]
+        """
+        self.parsed_form = RequestParameters()
+        self.parsed_files = RequestParameters()
+        content_type = self.headers.getone(
+            "content-type", DEFAULT_HTTP_CONTENT_TYPE
+        )
+        content_type, parameters = parse_content_header(content_type)
+        try:
+            if content_type == "application/x-www-form-urlencoded":
+                self.parsed_form = RequestParameters(
+                    parse_qs(
+                        self.body.decode("utf-8"),
+                        keep_blank_values=keep_blank_values,
+                    )
+                )
+            elif content_type == "multipart/form-data":
+                # TODO: Stream this instead of reading to/from memory
+                boundary = parameters["boundary"].encode(  # type: ignore
+                    "utf-8"
+                )  # type: ignore
+                self.parsed_form, self.parsed_files = parse_multipart_form(
+                    self.body, boundary
+                )
+        except Exception:
+            error_logger.exception("Failed when parsing form")
+
+        return self.parsed_form
 
     @property
     def form(self):
+        """
+        :return: The request body parsed as form data
+        """
         if self.parsed_form is None:
-            self.parsed_form = RequestParameters()
-            self.parsed_files = RequestParameters()
-            content_type = self.headers.getone(
-                "content-type", DEFAULT_HTTP_CONTENT_TYPE
-            )
-            content_type, parameters = parse_content_header(content_type)
-            try:
-                if content_type == "application/x-www-form-urlencoded":
-                    self.parsed_form = RequestParameters(
-                        parse_qs(self.body.decode("utf-8"))
-                    )
-                elif content_type == "multipart/form-data":
-                    # TODO: Stream this instead of reading to/from memory
-                    boundary = parameters["boundary"].encode("utf-8")
-                    self.parsed_form, self.parsed_files = parse_multipart_form(
-                        self.body, boundary
-                    )
-            except Exception:
-                error_logger.exception("Failed when parsing form")
+            self.get_form()
 
         return self.parsed_form
 
     @property
     def files(self):
+        """
+        :return: The request body parsed as uploaded files
+        """
         if self.parsed_files is None:
             self.form  # compute form to get files
 
@@ -387,8 +612,8 @@ class Request:
         errors: str = "replace",
     ) -> RequestParameters:
         """
-        Method to parse `query_string` using `urllib.parse.parse_qs`.
-        This methods is used by `args` property.
+        Method to parse ``query_string`` using ``urllib.parse.parse_qs``.
+        This methods is used by ``args`` property.
         Can be used directly if you need to change default parameters.
 
         :param keep_blank_values:
@@ -437,6 +662,10 @@ class Request:
         ]
 
     args = property(get_args)
+    """
+    Convenience property to access :meth:`Request.get_args` with
+    default values.
+    """
 
     def get_query_args(
         self,
@@ -556,6 +785,9 @@ class Request:
 
     @property
     def socket(self):
+        """
+        :return: Information about the connected socket if available
+        """
         return self.conn_info.peername if self.conn_info else (None, None)
 
     @property
@@ -566,6 +798,13 @@ class Request:
         """
         return self._parsed_url.path.decode("utf-8")
 
+    @property
+    def network_paths(self):
+        """
+        Access the network paths if available
+        """
+        return self.conn_info.network_paths
+
     # Proxy properties (using SERVER_NAME/forwarded/request/transport info)
 
     @property
@@ -619,23 +858,25 @@ class Request:
         :return: http|https|ws|wss or arbitrary value given by the headers.
         :rtype: str
         """
-        if "//" in self.app.config.get("SERVER_NAME", ""):
-            return self.app.config.SERVER_NAME.split("//")[0]
-        if "proto" in self.forwarded:
-            return str(self.forwarded["proto"])
+        if not hasattr(self, "_scheme"):
+            if "//" in self.app.config.get("SERVER_NAME", ""):
+                return self.app.config.SERVER_NAME.split("//")[0]
+            if "proto" in self.forwarded:
+                return str(self.forwarded["proto"])
 
-        if (
-            self.app.websocket_enabled
-            and self.headers.getone("upgrade", "").lower() == "websocket"
-        ):
-            scheme = "ws"
-        else:
-            scheme = "http"
+            if (
+                self.app.websocket_enabled
+                and self.headers.getone("upgrade", "").lower() == "websocket"
+            ):
+                scheme = "ws"
+            else:
+                scheme = "http"
 
-        if self.transport.get_extra_info("sslcontext"):
-            scheme += "s"
+            if self.transport.get_extra_info("sslcontext"):
+                scheme += "s"
+            self._scheme = scheme
 
-        return scheme
+        return self._scheme
 
     @property
     def host(self) -> str:
@@ -740,6 +981,48 @@ class Request:
             view_name, _external=True, _scheme=scheme, _server=netloc, **kwargs
         )
 
+    @property
+    def scope(self) -> ASGIScope:
+        """
+        :return: The ASGI scope of the request.
+                 If the app isn't an ASGI app, then raises an exception.
+        :rtype: Optional[ASGIScope]
+        """
+        if not self.app.asgi:
+            raise NotImplementedError(
+                "App isn't running in ASGI mode. "
+                "Scope is only available for ASGI apps."
+            )
+
+        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
+
+    @property
+    def is_idempotent(self) -> bool:
+        """
+        :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
+
+    @property
+    def is_cacheable(self) -> bool:
+        """
+        :return: Whether the HTTP method is cacheable.
+            See https://datatracker.ietf.org/doc/html/rfc7231#section-4.2.3
+        :rtype: bool
+        """
+        return self.method in CACHEABLE_HTTP_METHODS
+
 
 class File(NamedTuple):
     """

sanic/response.py

@@ -1,9 +1,12 @@
 from __future__ import annotations
 
+from datetime import datetime, timezone
+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 (
     TYPE_CHECKING,
     Any,
@@ -19,17 +22,24 @@ from typing import (
 )
 from urllib.parse import quote_plus
 
-from sanic.compat import Header, open_async
+from sanic.compat import Header, open_async, stat_async
 from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE
 from sanic.cookies import CookieJar
 from sanic.exceptions import SanicException, ServerError
-from sanic.helpers import has_message_body, remove_entity_headers
+from sanic.helpers import (
+    Default,
+    _default,
+    has_message_body,
+    remove_entity_headers,
+)
 from sanic.http import Http
+from sanic.log import logger
 from sanic.models.protocol_types import HTMLProtocol, Range
 
 
 if TYPE_CHECKING:
     from sanic.asgi import ASGIApp
+    from sanic.http.http3 import HTTPReceiver
     from sanic.request import Request
 else:
     Request = TypeVar("Request")
@@ -50,17 +60,31 @@ 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]] = 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""
@@ -139,7 +163,10 @@ class BaseHTTPResponse:
             if hasattr(data, "encode")
             else data or b""
         )
-        await self.stream.send(data, end_stream=end_stream)
+        await self.stream.send(
+            data,  # type: ignore
+            end_stream=end_stream or False,
+        )
 
 
 class HTTPResponse(BaseHTTPResponse):
@@ -156,7 +183,7 @@ class HTTPResponse(BaseHTTPResponse):
     :type content_type: Optional[str]
     """
 
-    __slots__ = ("body", "status", "content_type", "headers", "_cookies")
+    __slots__ = ()
 
     def __init__(
         self,
@@ -184,7 +211,7 @@ class HTTPResponse(BaseHTTPResponse):
 
 
 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.
@@ -201,7 +228,7 @@ def json(
     headers: Optional[Dict[str, str]] = None,
     content_type: str = "application/json",
     dumps: Optional[Callable[..., str]] = None,
-    **kwargs,
+    **kwargs: Any,
 ) -> HTTPResponse:
     """
     Returns response object with body in json format.
@@ -293,27 +320,101 @@ 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 <= if_modified_since:
+        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,
+    last_modified: Optional[Union[datetime, float, int, Default]] = _default,
+    max_age: Optional[Union[float, int]] = None,
+    no_store: Optional[bool] = None,
     _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.
     :param filename: Override filename.
+    :param last_modified: The last modified date and time of the file.
+    :param max_age: Max age for cache control.
+    :param no_store: Any cache should not store this response.
     :param _range:
     """
+
+    if isinstance(last_modified, datetime):
+        last_modified = last_modified.replace(microsecond=0).timestamp()
+    elif isinstance(last_modified, Default):
+        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)
+        )
+
     if filename:
         headers.setdefault(
             "Content-Disposition", f'attachment; filename="{filename}"'
         )
+
+    if no_store:
+        cache_control = "no-store"
+    elif max_age:
+        cache_control = f"public, max-age={max_age}"
+        headers.setdefault(
+            "expires",
+            formatdate(
+                time() + max_age,
+                usegmt=True,
+            ),
+        )
+    else:
+        cache_control = "no-cache"
+
+    headers.setdefault("cache-control", cache_control)
+
     filename = filename or path.split(location)[-1]
 
     async with await open_async(location, mode="rb") as f:
@@ -367,8 +468,7 @@ def redirect(
 class ResponseStream:
     """
     ResponseStream is a compat layer to bridge the gap after the deprecation
-    of StreamingHTTPResponse. In v22.6 it will be removed when:
-    - stream is removed
+    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
     """
@@ -496,38 +596,3 @@ async def file_stream(
         headers=headers,
         content_type=mime_type,
     )
-
-
-def stream(
-    streaming_fn: Callable[
-        [Union[BaseHTTPResponse, ResponseStream]], Coroutine[Any, Any, None]
-    ],
-    status: int = 200,
-    headers: Optional[Dict[str, str]] = None,
-    content_type: str = "text/plain; charset=utf-8",
-) -> ResponseStream:
-    """Accepts a coroutine `streaming_fn` which can be used to
-    write chunks to a streaming response. Returns a `ResponseStream`.
-
-    Example usage::
-
-        @app.route("/")
-        async def index(request):
-            async def streaming_fn(response):
-                await response.write('foo')
-                await response.write('bar')
-
-            return stream(streaming_fn, content_type='text/plain')
-
-    :param streaming_fn: A coroutine accepts a response and
-        writes content to that response.
-    :param status: HTTP status.
-    :param content_type: Specific content_type.
-    :param headers: Custom Headers.
-    """
-    return ResponseStream(
-        streaming_fn,
-        headers=headers,
-        content_type=content_type,
-        status=status,
-    )

sanic/router.py

@@ -5,16 +5,15 @@ from inspect import signature
 from typing import Any, Dict, Iterable, List, Optional, Tuple, Union
 from uuid import UUID
 
-from sanic_routing import BaseRouter  # type: ignore
-from sanic_routing.exceptions import NoMethod  # type: ignore
-from sanic_routing.exceptions import (
-    NotFound as RoutingNotFound,  # type: ignore
-)
-from sanic_routing.route import Route  # type: ignore
+from sanic_routing import BaseRouter
+from sanic_routing.exceptions import NoMethod
+from sanic_routing.exceptions import NotFound as RoutingNotFound
+from sanic_routing.route import Route
 
 from sanic.constants import HTTP_METHODS
 from sanic.errorpages import check_error_format
-from sanic.exceptions import MethodNotSupported, NotFound, SanicException
+from sanic.exceptions import MethodNotAllowed, NotFound, SanicException
+from sanic.handlers import RequestHandler
 from sanic.models.handler_types import RouteHandler
 
 
@@ -33,9 +32,11 @@ class Router(BaseRouter):
 
     def _get(
         self, path: str, method: str, host: Optional[str]
-    ) -> Tuple[Route, RouteHandler, Dict[str, Any]]:
+    ) -> Tuple[Route, RequestHandler, Dict[str, Any]]:
         try:
-            return self.resolve(
+            # We know this will always be RequestHandler, so we can ignore
+            # typing issue here
+            return self.resolve(  # type: ignore
                 path=path,
                 method=method,
                 extra={"host": host} if host else None,
@@ -43,7 +44,7 @@ class Router(BaseRouter):
         except RoutingNotFound as e:
             raise NotFound("Requested URL {} not found".format(e.path))
         except NoMethod as e:
-            raise MethodNotSupported(
+            raise MethodNotAllowed(
                 "Method {} not allowed for URL {}".format(method, path),
                 method=method,
                 allowed_methods=e.allowed_methods,
@@ -52,7 +53,7 @@ class Router(BaseRouter):
     @lru_cache(maxsize=ROUTER_CACHE_SIZE)
     def get(  # type: ignore
         self, path: str, method: str, host: Optional[str]
-    ) -> Tuple[Route, RouteHandler, Dict[str, Any]]:
+    ) -> Tuple[Route, RequestHandler, Dict[str, Any]]:
         """
         Retrieve a `Route` object containing the details about how to handle
         a response for a given request
@@ -61,7 +62,7 @@ class Router(BaseRouter):
         :type request: Request
         :return: details needed for handling the request and returning the
             correct response
-        :rtype: Tuple[ Route, RouteHandler, Dict[str, Any]]
+        :rtype: Tuple[ Route, RequestHandler, Dict[str, Any]]
         """
         return self._get(path, method, host)
 
@@ -116,7 +117,7 @@ class Router(BaseRouter):
 
         params = dict(
             path=uri,
-            handler=handler,
+            handler=RequestHandler(handler, [], []),
             methods=frozenset(map(str, methods)) if methods else None,
             name=name,
             strict=strict_slashes,

sanic/server/async_server.py

@@ -5,7 +5,6 @@ import asyncio
 from typing import TYPE_CHECKING
 
 from sanic.exceptions import SanicException
-from sanic.log import deprecation
 
 
 if TYPE_CHECKING:
@@ -35,15 +34,6 @@ class AsyncioServer:
         self.serve_coro = serve_coro
         self.server = None
 
-    @property
-    def init(self):
-        deprecation(
-            "AsyncioServer.init has been deprecated and will be removed "
-            "in v22.6. Use Sanic.state.is_started instead.",
-            22.6,
-        )
-        return self.app.state.is_started
-
     def startup(self):
         """
         Trigger "before_server_start" events

sanic/server/events.py

@@ -1,8 +1,18 @@
+from __future__ import annotations
+
 from inspect import isawaitable
-from typing import Any, Callable, Iterable, Optional
+from typing import TYPE_CHECKING, Any, Callable, Iterable, Optional
 
 
-def trigger_events(events: Optional[Iterable[Callable[..., Any]]], loop):
+if TYPE_CHECKING:
+    from sanic import Sanic
+
+
+def trigger_events(
+    events: Optional[Iterable[Callable[..., Any]]],
+    loop,
+    app: Optional[Sanic] = None,
+):
     """
     Trigger event callbacks (functions or async)
 
@@ -11,6 +21,9 @@ def trigger_events(events: Optional[Iterable[Callable[..., Any]]], loop):
     """
     if events:
         for event in events:
-            result = event(loop)
+            try:
+                result = event() if not app else event(app)
+            except TypeError:
+                result = event(loop) if not app else event(app, loop)
             if isawaitable(result):
                 loop.run_until_complete(result)

sanic/server/legacy.py

@@ -9,7 +9,6 @@ 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.
@@ -52,7 +51,7 @@ def restart_with_reloader(changed=None):
     this one.
     """
     reloaded = ",".join(changed) if changed else ""
-    return subprocess.Popen(
+    return subprocess.Popen(  # nosec B603
         _get_args_for_reloading(),
         env={
             **os.environ,
@@ -77,9 +76,8 @@ def _check_file(filename, mtimes):
     return need_reload
 
 
-def watchdog(sleep_interval, app):
+def watchdog(sleep_interval, reload_dirs):
     """Watch project files, restart worker process if a change happened.
-
     :param sleep_interval: interval in second.
     :return: Nothing
     """
@@ -100,7 +98,7 @@ def watchdog(sleep_interval, app):
             changed = set()
             for filename in itertools.chain(
                 _iter_module_files(),
-                *(d.glob("**/*") for d in app.reload_dirs),
+                *(d.glob("**/*") for d in reload_dirs),
             ):
                 try:
                     if _check_file(filename, mtimes):

sanic/server/loop.py

@@ -1,4 +1,5 @@
 import asyncio
+import sys
 
 from distutils.util import strtobool
 from os import getenv
@@ -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

@@ -2,33 +2,94 @@ from __future__ import annotations
 
 from typing import TYPE_CHECKING, Optional
 
+from sanic.handlers import RequestManager
+from sanic.http.constants import HTTP
+from sanic.http.http3 import Http3
 from sanic.touchup.meta import TouchUpMeta
 
 
 if TYPE_CHECKING:
     from sanic.app import Sanic
 
+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 error_logger, logger
+from sanic.log import Colors, error_logger, logger
 from sanic.models.server_types import ConnInfo
 from sanic.request import Request
 from sanic.server.protocols.base_protocol import SanicProtocol
 
 
-class HttpProtocol(SanicProtocol, metaclass=TouchUpMeta):
+ConnectionProtocol = type("ConnectionProtocol", (), {})
+try:
+    from aioquic.asyncio import QuicConnectionProtocol
+    from aioquic.h3.connection import H3_ALPN, H3Connection
+    from aioquic.quic.events import (
+        DatagramFrameReceived,
+        ProtocolNegotiated,
+        QuicEvent,
+    )
+
+    ConnectionProtocol = QuicConnectionProtocol
+except ModuleNotFoundError:  # no cov
+    ...
+
+
+class HttpProtocolMixin:
+    __slots__ = ()
+    __version__: HTTP
+
+    def _setup_connection(self, *args, **kwargs):
+        self._http = self.HTTP_CLASS(self, *args, **kwargs)
+        self._time = current_time()
+        try:
+            self.check_timeouts()
+        except AttributeError:
+            ...
+
+    def _setup(self):
+        self.request: Optional[Request] = None
+        self.access_log = self.app.config.ACCESS_LOG
+        self.request_handler = RequestManager
+        self.error_handler = self.app.error_handler
+        self.request_timeout = self.app.config.REQUEST_TIMEOUT
+        self.response_timeout = self.app.config.RESPONSE_TIMEOUT
+        self.keep_alive_timeout = self.app.config.KEEP_ALIVE_TIMEOUT
+        self.request_max_size = self.app.config.REQUEST_MAX_SIZE
+        self.request_class = self.app.request_class or Request
+
+    @property
+    def http(self):
+        if not hasattr(self, "_http"):
+            return None
+        return self._http
+
+    @property
+    def version(self):
+        return self.__class__.__version__
+
+
+class HttpProtocol(HttpProtocolMixin, SanicProtocol, metaclass=TouchUpMeta):
     """
     This class provides implements the HTTP 1.1 protocol on top of our
     Sanic Server transport
     """
 
+    HTTP_CLASS = Http
+
     __touchup__ = (
         "send",
         "connection_task",
     )
+    __version__ = HTTP.VERSION_1
     __slots__ = (
         # request params
         "request",
@@ -70,25 +131,12 @@ class HttpProtocol(SanicProtocol, metaclass=TouchUpMeta):
             unix=unix,
         )
         self.url = None
-        self.request: Optional[Request] = None
-        self.access_log = self.app.config.ACCESS_LOG
-        self.request_handler = self.app.handle_request
-        self.error_handler = self.app.error_handler
-        self.request_timeout = self.app.config.REQUEST_TIMEOUT
-        self.response_timeout = self.app.config.RESPONSE_TIMEOUT
-        self.keep_alive_timeout = self.app.config.KEEP_ALIVE_TIMEOUT
-        self.request_max_size = self.app.config.REQUEST_MAX_SIZE
-        self.request_class = self.app.request_class or Request
         self.state = state if state else {}
+        self._setup()
         if "requests_count" not in self.state:
             self.state["requests_count"] = 0
         self._exception = None
 
-    def _setup_connection(self):
-        self._http = Http(self)
-        self._time = current_time()
-        self.check_timeouts()
-
     async def connection_task(self):  # no cov
         """
         Run a HTTP connection.
@@ -169,7 +217,10 @@ class HttpProtocol(SanicProtocol, metaclass=TouchUpMeta):
                 )
                 self.loop.call_later(max(0.1, interval), self.check_timeouts)
                 return
-            self._task.cancel()
+            cancel_msg_args = ()
+            if sys.version_info >= (3, 9):
+                cancel_msg_args = ("Cancel connection task with a timeout",)
+            self._task.cancel(*cancel_msg_args)
         except Exception:
             error_logger.exception("protocol.check_timeouts")
 
@@ -179,7 +230,7 @@ class HttpProtocol(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,
@@ -219,7 +270,6 @@ class HttpProtocol(SanicProtocol, metaclass=TouchUpMeta):
             error_logger.exception("protocol.connect_made")
 
     def data_received(self, data: bytes):
-
         try:
             self._time = current_time()
             if not data:
@@ -236,3 +286,39 @@ class HttpProtocol(SanicProtocol, metaclass=TouchUpMeta):
                 self._data_received.set()
         except Exception:
             error_logger.exception("protocol.data_received")
+
+
+class Http3Protocol(HttpProtocolMixin, ConnectionProtocol):  # type: ignore
+    HTTP_CLASS = Http3
+    __version__ = HTTP.VERSION_3
+
+    def __init__(self, *args, app: Sanic, **kwargs) -> None:
+        self.app = app
+        super().__init__(*args, **kwargs)
+        self._setup()
+        self._connection: Optional[H3Connection] = None
+
+    def quic_event_received(self, event: QuicEvent) -> None:
+        logger.debug(
+            f"{Colors.BLUE}[quic_event_received]: "
+            f"{Colors.PURPLE}{event}{Colors.END}",
+            extra={"verbosity": 2},
+        )
+        if isinstance(event, ProtocolNegotiated):
+            self._setup_connection(transmit=self.transmit)
+            if event.alpn_protocol in H3_ALPN:
+                self._connection = H3Connection(
+                    self._quic, enable_webtransport=True
+                )
+        elif isinstance(event, DatagramFrameReceived):
+            if event.data == b"quack":
+                self._quic.send_datagram_frame(b"quack-ack")
+
+        #  pass event to the HTTP layer
+        if self._connection is not None:
+            for http_event in self._connection.handle_event(event):
+                self._http.http_event_received(http_event)
+
+    @property
+    def connection(self) -> Optional[H3Connection]:
+        return self._connection

sanic/server/protocols/websocket_protocol.py

@@ -5,7 +5,7 @@ from websockets.server import ServerConnection
 from websockets.typing import Subprotocol
 
 from sanic.exceptions import ServerError
-from sanic.log import deprecation, error_logger
+from sanic.log import logger
 from sanic.server import HttpProtocol
 
 from ..websockets.impl import WebsocketImplProtocol
@@ -29,9 +29,6 @@ class WebSocketProtocol(HttpProtocol):
         *args,
         websocket_timeout: float = 10.0,
         websocket_max_size: Optional[int] = None,
-        websocket_max_queue: Optional[int] = None,  # max_queue is deprecated
-        websocket_read_limit: Optional[int] = None,  # read_limit is deprecated
-        websocket_write_limit: Optional[int] = None,  # write_limit deprecated
         websocket_ping_interval: Optional[float] = 20.0,
         websocket_ping_timeout: Optional[float] = 20.0,
         **kwargs,
@@ -40,27 +37,6 @@ class WebSocketProtocol(HttpProtocol):
         self.websocket: Optional[WebsocketImplProtocol] = None
         self.websocket_timeout = websocket_timeout
         self.websocket_max_size = websocket_max_size
-        if websocket_max_queue is not None and websocket_max_queue > 0:
-            # TODO: Reminder remove this warning in v22.3
-            deprecation(
-                "Websocket no longer uses queueing, so websocket_max_queue"
-                " is no longer required.",
-                22.3,
-            )
-        if websocket_read_limit is not None and websocket_read_limit > 0:
-            # TODO: Reminder remove this warning in v22.3
-            deprecation(
-                "Websocket no longer uses read buffers, so "
-                "websocket_read_limit is not required.",
-                22.3,
-            )
-        if websocket_write_limit is not None and websocket_write_limit > 0:
-            # TODO: Reminder remove this warning in v22.3
-            deprecation(
-                "Websocket no longer uses write buffers, so "
-                "websocket_write_limit is not required.",
-                22.3,
-            )
         self.websocket_ping_interval = websocket_ping_interval
         self.websocket_ping_timeout = websocket_ping_timeout
 
@@ -128,7 +104,7 @@ class WebSocketProtocol(HttpProtocol):
                 max_size=self.websocket_max_size,
                 subprotocols=subprotocols,
                 state=OPEN,
-                logger=error_logger,
+                logger=logger,
             )
             resp: "http11.Response" = ws_conn.accept(request)
         except Exception:

sanic/server/runners.py

@@ -6,6 +6,9 @@ from ssl import SSLContext
 from typing import TYPE_CHECKING, Dict, Optional, Type, Union
 
 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
 
 
@@ -23,10 +26,11 @@ 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.models.server_types import Signal
 from sanic.server.async_server import AsyncioServer
-from sanic.server.protocols.http_protocol import HttpProtocol
+from sanic.server.protocols.http_protocol import Http3Protocol, HttpProtocol
 from sanic.server.socket import (
     bind_socket,
     bind_unix_socket,
@@ -34,6 +38,14 @@ from sanic.server.socket import (
 )
 
 
+try:
+    from aioquic.asyncio import serve as quic_serve
+
+    HTTP3_AVAILABLE = True
+except ModuleNotFoundError:  # no cov
+    HTTP3_AVAILABLE = False
+
+
 def serve(
     host,
     port,
@@ -52,6 +64,7 @@ def serve(
     signal=Signal(),
     state=None,
     asyncio_server_kwargs=None,
+    version=HTTP.VERSION_1,
 ):
     """Start asynchronous HTTP Server on an individual process.
 
@@ -88,6 +101,90 @@ def serve(
 
     app.asgi = False
 
+    if version is HTTP.VERSION_3:
+        return _serve_http_3(host, port, app, loop, ssl)
+    return _serve_http_1(
+        host,
+        port,
+        app,
+        ssl,
+        sock,
+        unix,
+        reuse_port,
+        loop,
+        protocol,
+        backlog,
+        register_sys_signals,
+        run_multiple,
+        run_async,
+        connections,
+        signal,
+        state,
+        asyncio_server_kwargs,
+    )
+
+
+def _setup_system_signals(
+    app: Sanic,
+    run_multiple: bool,
+    register_sys_signals: bool,
+    loop: asyncio.AbstractEventLoop,
+) -> None:  # no cov
+    # Ignore SIGINT when run_multiple
+    if run_multiple:
+        signal_func(SIGINT, SIG_IGN)
+        os.environ["SANIC_WORKER_PROCESS"] = "true"
+
+    # Register signals for graceful termination
+    if register_sys_signals:
+        if OS_IS_WINDOWS:
+            ctrlc_workaround_for_windows(app)
+        else:
+            for _signal in [SIGTERM] if run_multiple else [SIGINT, SIGTERM]:
+                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)
+        loop.run_forever()
+    except KeyboardInterrupt:
+        pass
+    finally:
+        logger.info("Stopping worker [%s]", pid)
+
+        loop.run_until_complete(before_stop())
+
+        if cleanup:
+            cleanup()
+
+        loop.run_until_complete(after_stop())
+        remove_unix_socket(unix)
+        loop.close()
+
+
+def _serve_http_1(
+    host,
+    port,
+    app,
+    ssl,
+    sock,
+    unix,
+    reuse_port,
+    loop,
+    protocol,
+    backlog,
+    register_sys_signals,
+    run_multiple,
+    run_async,
+    connections,
+    signal,
+    state,
+    asyncio_server_kwargs,
+):
     connections = connections if connections is not None else set()
     protocol_kwargs = _build_protocol_kwargs(protocol, app.config)
     server = partial(
@@ -103,8 +200,12 @@ def serve(
     asyncio_server_kwargs = (
         asyncio_server_kwargs if asyncio_server_kwargs else {}
     )
+    if OS_IS_WINDOWS:
+        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,
@@ -132,33 +233,10 @@ def serve(
     try:
         http_server = loop.run_until_complete(server_coroutine)
     except BaseException:
-        error_logger.exception("Unable to start server")
+        error_logger.exception("Unable to start server", exc_info=True)
         return
 
-    # Ignore SIGINT when run_multiple
-    if run_multiple:
-        signal_func(SIGINT, SIG_IGN)
-        os.environ["SANIC_WORKER_PROCESS"] = "true"
-
-    # Register signals for graceful termination
-    if register_sys_signals:
-        if OS_IS_WINDOWS:
-            ctrlc_workaround_for_windows(app)
-        else:
-            for _signal in [SIGTERM] if run_multiple else [SIGINT, SIGTERM]:
-                loop.add_signal_handler(_signal, app.stop)
-
-    loop.run_until_complete(app._server_event("init", "after"))
-    pid = os.getpid()
-    try:
-        logger.info("Starting worker [%s]", pid)
-        loop.run_forever()
-    finally:
-        logger.info("Stopping worker [%s]", pid)
-
-        # Run the on_stop function if provided
-        loop.run_until_complete(app._server_event("shutdown", "before"))
-
+    def _cleanup():
         # Wait for event loop to finish and all connections to drain
         http_server.close()
         loop.run_until_complete(http_server.wait_closed())
@@ -188,8 +266,55 @@ def serve(
                 conn.websocket.fail_connection(code=1001)
             else:
                 conn.abort()
-        loop.run_until_complete(app._server_event("shutdown", "after"))
-        remove_unix_socket(unix)
+
+    _setup_system_signals(app, run_multiple, register_sys_signals, loop)
+    loop.run_until_complete(app._server_event("init", "after"))
+    _run_server_forever(
+        loop,
+        partial(app._server_event, "shutdown", "before"),
+        partial(app._server_event, "shutdown", "after"),
+        _cleanup,
+        unix,
+    )
+
+
+def _serve_http_3(
+    host,
+    port,
+    app,
+    loop,
+    ssl,
+    register_sys_signals: bool = True,
+    run_multiple: bool = False,
+):
+    if not HTTP3_AVAILABLE:
+        raise ServerError(
+            "Cannot run HTTP/3 server without aioquic installed. "
+        )
+    protocol = partial(Http3Protocol, app=app)
+    ticket_store = SessionTicketStore()
+    ssl_context = get_ssl_context(app, ssl)
+    config = get_config(app, ssl_context)
+    coro = quic_serve(
+        host,
+        port,
+        configuration=config,
+        create_protocol=protocol,
+        session_ticket_fetcher=ticket_store.pop,
+        session_ticket_handler=ticket_store.add,
+    )
+    server = AsyncioServer(app, loop, coro, [])
+    loop.run_until_complete(server.startup())
+    loop.run_until_complete(server.before_start())
+    loop.run_until_complete(server)
+    _setup_system_signals(app, run_multiple, register_sys_signals, loop)
+    loop.run_until_complete(server.after_start())
+
+    # TODO: Create connection cleanup and graceful shutdown
+    cleanup = None
+    _run_server_forever(
+        loop, server.before_stop, server.after_stop, cleanup, None
+    )
 
 
 def serve_single(server_settings):

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 +91,37 @@ 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
+            raise ServerError(
+                f"Sanic server could not start: {e}.\n"
+                "This may have happened if you are running Sanic in the "
+                "global scope and not inside of a "
+                '`if __name__ == "__main__"` block. See more information: '
+                "____."
+            ) from e
+        sock.set_inheritable(True)
+        server_settings["sock"] = sock
+        server_settings["host"] = None
+        server_settings["port"] = None
+    return sock

sanic/server/websockets/frame.py

@@ -131,7 +131,7 @@ class WebsocketFrameAssembler:
             if self.paused:
                 self.protocol.resume_frames()
                 self.paused = False
-            if not self.get_in_progress:
+            if not self.get_in_progress:  # no cov
                 # This should be guarded against with the read_mutex,
                 # exception is here as a failsafe
                 raise ServerError(
@@ -204,7 +204,7 @@ class WebsocketFrameAssembler:
             if self.paused:
                 self.protocol.resume_frames()
                 self.paused = False
-            if not self.get_in_progress:
+            if not self.get_in_progress:  # no cov
                 # This should be guarded against with the read_mutex,
                 # exception is here as a failsafe
                 raise ServerError(
@@ -212,7 +212,7 @@ class WebsocketFrameAssembler:
                     "asynchronous get was in progress."
                 )
             self.get_in_progress = False
-            if not self.message_complete.is_set():
+            if not self.message_complete.is_set():  # no cov
                 # This should be guarded against with the read_mutex,
                 # exception is here as a failsafe
                 raise ServerError(
@@ -220,7 +220,7 @@ class WebsocketFrameAssembler:
                     "message was complete."
                 )
             self.message_complete.clear()
-            if self.message_fetched.is_set():
+            if self.message_fetched.is_set():  # no cov
                 # This should be guarded against with the read_mutex,
                 # and get_in_progress check, this exception is
                 # here as a failsafe

sanic/server/websockets/impl.py

@@ -252,7 +252,7 @@ class WebsocketImplProtocol:
 
     def _force_disconnect(self) -> bool:
         """
-        Internal methdod used by end_connection and fail_connection
+        Internal method used by end_connection and fail_connection
         only when the graceful auto-closer cannot be used
         """
         if self.auto_closer_task and not self.auto_closer_task.done():
@@ -518,8 +518,12 @@ class WebsocketImplProtocol:
             )
         try:
             self.recv_cancel = asyncio.Future()
+            tasks = (
+                self.recv_cancel,
+                asyncio.ensure_future(self.assembler.get(timeout)),
+            )
             done, pending = await asyncio.wait(
-                (self.recv_cancel, self.assembler.get(timeout)),
+                tasks,
                 return_when=asyncio.FIRST_COMPLETED,
             )
             done_task = next(iter(done))
@@ -570,8 +574,12 @@ class WebsocketImplProtocol:
             self.can_pause = False
             self.recv_cancel = asyncio.Future()
             while True:
+                tasks = (
+                    self.recv_cancel,
+                    asyncio.ensure_future(self.assembler.get(timeout=0)),
+                )
                 done, pending = await asyncio.wait(
-                    (self.recv_cancel, self.assembler.get(timeout=0)),
+                    tasks,
                     return_when=asyncio.FIRST_COMPLETED,
                 )
                 done_task = next(iter(done))

sanic/signals.py

@@ -6,9 +6,9 @@ from enum import Enum
 from inspect import isawaitable
 from typing import Any, Dict, List, Optional, Tuple, Union, cast
 
-from sanic_routing import BaseRouter, Route, RouteGroup  # type: ignore
-from sanic_routing.exceptions import NotFound  # type: ignore
-from sanic_routing.utils import path_to_parts  # type: ignore
+from sanic_routing import BaseRouter, Route, RouteGroup
+from sanic_routing.exceptions import NotFound
+from sanic_routing.utils import path_to_parts
 
 from sanic.exceptions import InvalidSignal
 from sanic.log import error_logger, logger
@@ -30,6 +30,8 @@ class Event(Enum):
     HTTP_LIFECYCLE_RESPONSE = "http.lifecycle.response"
     HTTP_ROUTING_AFTER = "http.routing.after"
     HTTP_ROUTING_BEFORE = "http.routing.before"
+    HTTP_HANDLER_AFTER = "http.handler.after"
+    HTTP_HANDLER_BEFORE = "http.handler.before"
     HTTP_LIFECYCLE_SEND = "http.lifecycle.send"
     HTTP_MIDDLEWARE_AFTER = "http.middleware.after"
     HTTP_MIDDLEWARE_BEFORE = "http.middleware.before"
@@ -53,6 +55,8 @@ RESERVED_NAMESPACES = {
         Event.HTTP_LIFECYCLE_RESPONSE.value,
         Event.HTTP_ROUTING_AFTER.value,
         Event.HTTP_ROUTING_BEFORE.value,
+        Event.HTTP_HANDLER_AFTER.value,
+        Event.HTTP_HANDLER_BEFORE.value,
         Event.HTTP_LIFECYCLE_SEND.value,
         Event.HTTP_MIDDLEWARE_AFTER.value,
         Event.HTTP_MIDDLEWARE_BEFORE.value,
@@ -80,6 +84,7 @@ class SignalRouter(BaseRouter):
             group_class=SignalGroup,
             stacking=True,
         )
+        self.allow_fail_builtin = True
         self.ctx.loop = None
 
     def get(  # type: ignore
@@ -129,7 +134,8 @@ class SignalRouter(BaseRouter):
         try:
             group, handlers, params = self.get(event, condition=condition)
         except NotFound as e:
-            if fail_not_found:
+            is_reserved = event.split(".", 1)[0] in RESERVED_NAMESPACES
+            if fail_not_found and (not is_reserved or self.allow_fail_builtin):
                 raise e
             else:
                 if self.ctx.app.debug and self.ctx.app.state.verbosity >= 1:
@@ -148,13 +154,13 @@ class SignalRouter(BaseRouter):
         try:
             for signal in signals:
                 params.pop("__trigger__", None)
+                requirements = getattr(
+                    signal.handler, "__requirements__", None
+                )
                 if (
                     (condition is None and signal.ctx.exclusive is False)
-                    or (
-                        condition is None
-                        and not signal.handler.__requirements__
-                    )
-                    or (condition == signal.handler.__requirements__)
+                    or (condition is None and not requirements)
+                    or (condition == requirements)
                 ) and (signal.ctx.trigger or event == signal.ctx.definition):
                     maybe_coroutine = signal.handler(**params)
                     if isawaitable(maybe_coroutine):
@@ -185,7 +191,7 @@ class SignalRouter(BaseRouter):
             fail_not_found=fail_not_found and inline,
             reverse=reverse,
         )
-        logger.debug(f"Dispatching signal: {event}")
+        logger.debug(f"Dispatching signal: {event}", extra={"verbosity": 1})
 
         if inline:
             return await dispatch

sanic/touchup/schemes/__init__.py

@@ -1,3 +1,4 @@
+from .altsvc import AltSvcCheck  # noqa
 from .base import BaseScheme
 from .ode import OptionalDispatchEvent  # noqa
 

sanic/touchup/schemes/altsvc.py

@@ -0,0 +1,56 @@
+from __future__ import annotations
+
+from ast import Assign, Constant, NodeTransformer, Subscript
+from typing import TYPE_CHECKING, Any, List
+
+from sanic.http.constants import HTTP
+
+from .base import BaseScheme
+
+
+if TYPE_CHECKING:
+    from sanic import Sanic
+
+
+class AltSvcCheck(BaseScheme):
+    ident = "ALTSVC"
+
+    def visitors(self) -> List[NodeTransformer]:
+        return [RemoveAltSvc(self.app, self.app.state.verbosity)]
+
+
+class RemoveAltSvc(NodeTransformer):
+    def __init__(self, app: Sanic, verbosity: int = 0) -> None:
+        self._app = app
+        self._verbosity = verbosity
+        self._versions = {
+            info.settings["version"] for info in app.state.server_info
+        }
+
+    def visit_Assign(self, node: Assign) -> Any:
+        if any(self._matches(target) for target in node.targets):
+            if self._should_remove():
+                return None
+            assert isinstance(node.value, Constant)
+            node.value.value = self.value()
+        return node
+
+    def _should_remove(self) -> bool:
+        return len(self._versions) == 1
+
+    @staticmethod
+    def _matches(node) -> bool:
+        return (
+            isinstance(node, Subscript)
+            and isinstance(node.slice, Constant)
+            and node.slice.value == "alt-svc"
+        )
+
+    def value(self):
+        values = []
+        for info in self._app.state.server_info:
+            port = info.settings["port"]
+            version = info.settings["version"]
+            if version is HTTP.VERSION_3:
+                values.append(f'h3=":{port}"')
+        return ", ".join(values)

sanic/touchup/schemes/base.py

@@ -1,5 +1,8 @@
 from abc import ABC, abstractmethod
-from typing import Set, Type
+from ast import NodeTransformer, parse
+from inspect import getsource
+from textwrap import dedent
+from typing import Any, Dict, List, Set, Type
 
 
 class BaseScheme(ABC):
@@ -10,11 +13,26 @@ class BaseScheme(ABC):
         self.app = app
 
     @abstractmethod
-    def run(self, method, module_globals) -> None:
+    def visitors(self) -> List[NodeTransformer]:
         ...
 
     def __init_subclass__(cls):
         BaseScheme._registry.add(cls)
 
-    def __call__(self, method, module_globals):
-        return self.run(method, module_globals)
+    def __call__(self):
+        return self.visitors()
+
+    @classmethod
+    def build(cls, method, module_globals, app):
+        raw_source = getsource(method)
+        src = dedent(raw_source)
+        node = parse(src)
+
+        for scheme in cls._registry:
+            for visitor in scheme(app)():
+                node = visitor.visit(node)
+
+        compiled_src = compile(node, method.__name__, "exec")
+        exec_locals: Dict[str, Any] = {}
+        exec(compiled_src, module_globals, exec_locals)  # nosec
+        return exec_locals[method.__name__]

sanic/touchup/schemes/ode.py

@@ -1,7 +1,5 @@
-from ast import Attribute, Await, Dict, Expr, NodeTransformer, parse
-from inspect import getsource
-from textwrap import dedent
-from typing import Any
+from ast import Attribute, Await, Expr, NodeTransformer
+from typing import Any, List
 
 from sanic.log import logger
 
@@ -10,32 +8,52 @@ from .base import BaseScheme
 
 class OptionalDispatchEvent(BaseScheme):
     ident = "ODE"
+    SYNC_SIGNAL_NAMESPACES = "http."
 
     def __init__(self, app) -> None:
         super().__init__(app)
 
+        self._sync_events()
         self._registered_events = [
-            signal.path for signal in app.signal_router.routes
+            signal.name for signal in app.signal_router.routes
         ]
 
-    def run(self, method, module_globals):
-        raw_source = getsource(method)
-        src = dedent(raw_source)
-        tree = parse(src)
-        node = RemoveDispatch(
-            self._registered_events, self.app.state.verbosity
-        ).visit(tree)
-        compiled_src = compile(node, method.__name__, "exec")
-        exec_locals: Dict[str, Any] = {}
-        exec(compiled_src, module_globals, exec_locals)  # nosec
+    def visitors(self) -> List[NodeTransformer]:
+        return [RemoveDispatch(self._registered_events)]
 
-        return exec_locals[method.__name__]
+    def _sync_events(self):
+        all_events = set()
+        app_events = {}
+        for app in self.app.__class__._app_registry.values():
+            if app.state.server_info:
+                app_events[app] = {
+                    signal.name for signal in app.signal_router.routes
+                }
+                all_events.update(app_events[app])
+
+        for app, events in app_events.items():
+            missing = {
+                x
+                for x in all_events.difference(events)
+                if any(x.startswith(y) for y in self.SYNC_SIGNAL_NAMESPACES)
+            }
+            if missing:
+                was_finalized = app.signal_router.finalized
+                if was_finalized:  # no cov
+                    app.signal_router.reset()
+                for event in missing:
+                    app.signal(event)(self.noop)
+                if was_finalized:  # no cov
+                    app.signal_router.finalize()
+
+    @staticmethod
+    async def noop(**_):  # no cov
+        ...
 
 
 class RemoveDispatch(NodeTransformer):
-    def __init__(self, registered_events, verbosity: int = 0) -> None:
+    def __init__(self, registered_events) -> None:
         self._registered_events = registered_events
-        self._verbosity = verbosity
 
     def visit_Expr(self, node: Expr) -> Any:
         call = node.value
@@ -52,8 +70,10 @@ class RemoveDispatch(NodeTransformer):
             if hasattr(event, "s"):
                 event_name = getattr(event, "value", event.s)
                 if self._not_registered(event_name):
-                    if self._verbosity >= 2:
-                        logger.debug(f"Disabling event: {event_name}")
+                    logger.debug(
+                        f"Disabling event: {event_name}",
+                        extra={"verbosity": 2},
+                    )
                     return None
         return node
 

sanic/touchup/service.py

@@ -21,10 +21,8 @@ class TouchUp:
 
             module = getmodule(target)
             module_globals = dict(getmembers(module))
-
-            for scheme in BaseScheme._registry:
-                modified = scheme(app)(method, module_globals)
-                setattr(target, method_name, modified)
+            modified = BaseScheme.build(method, module_globals, app)
+            setattr(target, method_name, modified)
 
             target.__touched__ = True
 

sanic/types/shared_ctx.py

@@ -0,0 +1,55 @@
+import os
+
+from types import SimpleNamespace
+from typing import Any, Iterable
+
+from sanic.log import Colors, error_logger
+
+
+class SharedContext(SimpleNamespace):
+    SAFE = ("_lock",)
+
+    def __init__(self, **kwargs: Any) -> None:
+        super().__init__(**kwargs)
+        self._lock = False
+
+    def __setattr__(self, name: str, value: Any) -> None:
+        if self.is_locked:
+            raise RuntimeError(
+                f"Cannot set {name} on locked SharedContext object"
+            )
+        if not os.environ.get("SANIC_WORKER_NAME"):
+            to_check: Iterable[Any]
+            if not isinstance(value, (tuple, frozenset)):
+                to_check = [value]
+            else:
+                to_check = value
+            for item in to_check:
+                self._check(name, item)
+        super().__setattr__(name, value)
+
+    def _check(self, name: str, value: Any) -> None:
+        if name in self.SAFE:
+            return
+        try:
+            module = value.__module__
+        except AttributeError:
+            module = ""
+        if not any(
+            module.startswith(prefix)
+            for prefix in ("multiprocessing", "ctypes")
+        ):
+            error_logger.warning(
+                f"{Colors.YELLOW}Unsafe object {Colors.PURPLE}{name} "
+                f"{Colors.YELLOW}with type {Colors.PURPLE}{type(value)} "
+                f"{Colors.YELLOW}was added to shared_ctx. It may not "
+                "not function as intended. Consider using the regular "
+                f"ctx. For more information, please see ____.{Colors.END}"
+            )
+
+    @property
+    def is_locked(self) -> bool:
+        return getattr(self, "_lock", False)
+
+    def lock(self) -> None:
+        self._lock = True

sanic/views.py

@@ -13,7 +13,7 @@ from typing import (
 from sanic.models.handler_types import RouteHandler
 
 
-if TYPE_CHECKING:  # no cov
+if TYPE_CHECKING:
     from sanic import Sanic
     from sanic.blueprints import Blueprint