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Implement HTTP 103 Early Hints as modern replacement for HTTP/2 Server Push.
This allows servers to send resource hints before the final response,
enabling browsers to preload assets in parallel.
WSGI support:
- Add wsgi.early_hints callback to environ dict
- Apps can call environ['wsgi.early_hints'](headers) to send 103 responses
- Silently ignored for HTTP/1.0 clients (don't support 1xx responses)
ASGI support:
- Handle http.response.informational message type
- Apps can await send({"type": "http.response.informational", "status": 103, ...})
HTTP/2 support:
- Add send_informational() method to HTTP2ServerConnection
- Add async send_informational() method to AsyncHTTP2Connection
- Wire up early hints in gthread worker for HTTP/2 requests
Includes unit tests and Docker integration tests for all protocols.
Gunicorn
========
.. image:: https://img.shields.io/pypi/v/gunicorn.svg?style=flat
:alt: PyPI version
:target: https://pypi.python.org/pypi/gunicorn
.. image:: https://img.shields.io/pypi/pyversions/gunicorn.svg
:alt: Supported Python versions
:target: https://pypi.python.org/pypi/gunicorn
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:alt: Build Status
:target: https://github.com/benoitc/gunicorn/actions/workflows/tox.yml
Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork
worker model ported from Ruby's Unicorn_ project. The Gunicorn server is broadly
compatible with various web frameworks, simply implemented, light on server
resource usage, and fairly speedy.
**New in v24**: Native ASGI support (beta) for async frameworks like FastAPI!
Quick Start
-----------
.. code-block:: bash
pip install gunicorn
gunicorn myapp:app --workers 4
For ASGI applications (FastAPI, Starlette):
.. code-block:: bash
gunicorn myapp:app --worker-class asgi
Features
--------
- WSGI support for Django, Flask, Pyramid, and any WSGI framework
- **ASGI support** (beta) for FastAPI, Starlette, Quart
- uWSGI binary protocol for nginx integration
- Multiple worker types: sync, gthread, gevent, eventlet, asgi
- Graceful worker process management
- Compatible with Python 3.12+
Documentation
-------------
Full documentation at https://gunicorn.org
- `Quickstart <https://gunicorn.org/quickstart/>`_
- `Configuration <https://gunicorn.org/configure/>`_
- `Deployment <https://gunicorn.org/deploy/>`_
- `Settings Reference <https://gunicorn.org/reference/settings/>`_
Community
---------
- Report bugs on `GitHub Issues <https://github.com/benoitc/gunicorn/issues>`_
- Chat in `#gunicorn`_ on `Libera.chat`_
- See `CONTRIBUTING.md <CONTRIBUTING.md>`_ for contribution guidelines
Sponsors
--------
Gunicorn is maintained thanks to our sponsors. `Become a sponsor <https://github.com/sponsors/benoitc>`_.
.. Sponsor logos will appear here
License
-------
Gunicorn is released under the MIT License. See the LICENSE_ file for details.
.. _Unicorn: https://bogomips.org/unicorn/
.. _`#gunicorn`: https://web.libera.chat/?channels=#gunicorn
.. _`Libera.chat`: https://libera.chat/
.. _LICENSE: https://github.com/benoitc/gunicorn/blob/master/LICENSE
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