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Metadata-Version: 2.2
Name: websockets
Version: 15.0.1
Summary: An implementation of the WebSocket Protocol (RFC 6455 & 7692)
Author-email: Aymeric Augustin <aymeric.augustin@m4x.org>
License: BSD-3-Clause
Project-URL: Homepage, https://github.com/python-websockets/websockets
Project-URL: Changelog, https://websockets.readthedocs.io/en/stable/project/changelog.html
Project-URL: Documentation, https://websockets.readthedocs.io/
Project-URL: Funding, https://tidelift.com/subscription/pkg/pypi-websockets?utm_source=pypi-websockets&utm_medium=referral&utm_campaign=readme
Project-URL: Tracker, https://github.com/python-websockets/websockets/issues
Keywords: WebSocket
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Requires-Python: >=3.9
Description-Content-Type: text/x-rst
License-File: LICENSE
Dynamic: description
Dynamic: description-content-type
.. image:: logo/horizontal.svg
:width: 480px
:alt: websockets
|licence| |version| |pyversions| |tests| |docs| |openssf|
.. |licence| image:: https://img.shields.io/pypi/l/websockets.svg
:target: https://pypi.python.org/pypi/websockets
.. |version| image:: https://img.shields.io/pypi/v/websockets.svg
:target: https://pypi.python.org/pypi/websockets
.. |pyversions| image:: https://img.shields.io/pypi/pyversions/websockets.svg
:target: https://pypi.python.org/pypi/websockets
.. |tests| image:: https://img.shields.io/github/checks-status/python-websockets/websockets/main?label=tests
:target: https://github.com/python-websockets/websockets/actions/workflows/tests.yml
.. |docs| image:: https://img.shields.io/readthedocs/websockets.svg
:target: https://websockets.readthedocs.io/
.. |openssf| image:: https://bestpractices.coreinfrastructure.org/projects/6475/badge
:target: https://bestpractices.coreinfrastructure.org/projects/6475
What is ``websockets``?
-----------------------
websockets is a library for building WebSocket_ servers and clients in Python
with a focus on correctness, simplicity, robustness, and performance.
.. _WebSocket: https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API
Built on top of ``asyncio``, Python's standard asynchronous I/O framework, the
default implementation provides an elegant coroutine-based API.
An implementation on top of ``threading`` and a Sans-I/O implementation are also
available.
`Documentation is available on Read the Docs. <https://websockets.readthedocs.io/>`_
.. copy-pasted because GitHub doesn't support the include directive
Here's an echo server with the ``asyncio`` API:
.. code:: python
#!/usr/bin/env python
import asyncio
from websockets.asyncio.server import serve
async def echo(websocket):
async for message in websocket:
await websocket.send(message)
async def main():
async with serve(echo, "localhost", 8765) as server:
await server.serve_forever()
asyncio.run(main())
Here's how a client sends and receives messages with the ``threading`` API:
.. code:: python
#!/usr/bin/env python
from websockets.sync.client import connect
def hello():
with connect("ws://localhost:8765") as websocket:
websocket.send("Hello world!")
message = websocket.recv()
print(f"Received: {message}")
hello()
Does that look good?
`Get started with the tutorial! <https://websockets.readthedocs.io/en/stable/intro/index.html>`_
Why should I use ``websockets``?
--------------------------------
The development of ``websockets`` is shaped by four principles:
1. **Correctness**: ``websockets`` is heavily tested for compliance with
:rfc:`6455`. Continuous integration fails under 100% branch coverage.
2. **Simplicity**: all you need to understand is ``msg = await ws.recv()`` and
``await ws.send(msg)``. ``websockets`` takes care of managing connections
so you can focus on your application.
3. **Robustness**: ``websockets`` is built for production. For example, it was
the only library to `handle backpressure correctly`_ before the issue
became widely known in the Python community.
4. **Performance**: memory usage is optimized and configurable. A C extension
accelerates expensive operations. It's pre-compiled for Linux, macOS and
Windows and packaged in the wheel format for each system and Python version.
Documentation is a first class concern in the project. Head over to `Read the
Docs`_ and see for yourself.
.. _Read the Docs: https://websockets.readthedocs.io/
.. _handle backpressure correctly: https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#websocket-servers
Why shouldn't I use ``websockets``?
-----------------------------------
* If you prefer callbacks over coroutines: ``websockets`` was created to
provide the best coroutine-based API to manage WebSocket connections in
Python. Pick another library for a callback-based API.
* If you're looking for a mixed HTTP / WebSocket library: ``websockets`` aims
at being an excellent implementation of :rfc:`6455`: The WebSocket Protocol
and :rfc:`7692`: Compression Extensions for WebSocket. Its support for HTTP
is minimal — just enough for an HTTP health check.
If you want to do both in the same server, look at HTTP + WebSocket servers
that build on top of ``websockets`` to support WebSocket connections, like
uvicorn_ or Sanic_.
.. _uvicorn: https://www.uvicorn.org/
.. _Sanic: https://sanic.dev/en/
What else?
----------
Bug reports, patches and suggestions are welcome!
To report a security vulnerability, please use the `Tidelift security
contact`_. Tidelift will coordinate the fix and disclosure.
.. _Tidelift security contact: https://tidelift.com/security
For anything else, please open an issue_ or send a `pull request`_.
.. _issue: https://github.com/python-websockets/websockets/issues/new
.. _pull request: https://github.com/python-websockets/websockets/compare/
Participants must uphold the `Contributor Covenant code of conduct`_.
.. _Contributor Covenant code of conduct: https://github.com/python-websockets/websockets/blob/main/CODE_OF_CONDUCT.md
``websockets`` is released under the `BSD license`_.
.. _BSD license: https://github.com/python-websockets/websockets/blob/main/LICENSE
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