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Metadata-Version: 2.1
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Name: websockets
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Version: 11.0.3
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Summary: An implementation of the WebSocket Protocol (RFC 6455 & 7692)
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Author-email: Aymeric Augustin <aymeric.augustin@m4x.org>
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License: BSD-3-Clause
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Project-URL: homepage, https://github.com/aaugustin/websockets
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Project-URL: changelog, https://websockets.readthedocs.io/en/stable/project/changelog.html
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Project-URL: documentation, https://websockets.readthedocs.io/
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Project-URL: funding, https://tidelift.com/subscription/pkg/pypi-websockets?utm_source=pypi-websockets&utm_medium=referral&utm_campaign=readme
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Project-URL: tracker, https://github.com/aaugustin/websockets/issues
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Keywords: WebSocket
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Classifier: Development Status :: 5 - Production/Stable
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Classifier: Environment :: Web Environment
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Classifier: Intended Audience :: Developers
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Classifier: License :: OSI Approved :: BSD License
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Classifier: Operating System :: OS Independent
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Classifier: Programming Language :: Python
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Classifier: Programming Language :: Python :: 3
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Classifier: Programming Language :: Python :: 3.7
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Classifier: Programming Language :: Python :: 3.8
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Classifier: Programming Language :: Python :: 3.9
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Classifier: Programming Language :: Python :: 3.10
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Classifier: Programming Language :: Python :: 3.11
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Requires-Python: >=3.7
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License-File: LICENSE
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.. image:: logo/horizontal.svg
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:width: 480px
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:alt: websockets
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|licence| |version| |pyversions| |tests| |docs| |openssf|
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.. |licence| image:: https://img.shields.io/pypi/l/websockets.svg
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:target: https://pypi.python.org/pypi/websockets
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.. |version| image:: https://img.shields.io/pypi/v/websockets.svg
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:target: https://pypi.python.org/pypi/websockets
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.. |pyversions| image:: https://img.shields.io/pypi/pyversions/websockets.svg
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:target: https://pypi.python.org/pypi/websockets
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.. |tests| image:: https://img.shields.io/github/checks-status/aaugustin/websockets/main?label=tests
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:target: https://github.com/aaugustin/websockets/actions/workflows/tests.yml
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.. |docs| image:: https://img.shields.io/readthedocs/websockets.svg
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:target: https://websockets.readthedocs.io/
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.. |openssf| image:: https://bestpractices.coreinfrastructure.org/projects/6475/badge
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:target: https://bestpractices.coreinfrastructure.org/projects/6475
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What is ``websockets``?
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-----------------------
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websockets is a library for building WebSocket_ servers and clients in Python
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with a focus on correctness, simplicity, robustness, and performance.
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.. _WebSocket: https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API
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Built on top of ``asyncio``, Python's standard asynchronous I/O framework, the
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default implementation provides an elegant coroutine-based API.
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An implementation on top of ``threading`` and a Sans-I/O implementation are also
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available.
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`Documentation is available on Read the Docs. <https://websockets.readthedocs.io/>`_
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.. copy-pasted because GitHub doesn't support the include directive
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Here's an echo server with the ``asyncio`` API:
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.. code:: python
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#!/usr/bin/env python
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import asyncio
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from websockets.server import serve
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async def echo(websocket):
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async for message in websocket:
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await websocket.send(message)
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async def main():
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async with serve(echo, "localhost", 8765):
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await asyncio.Future() # run forever
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asyncio.run(main())
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Here's how a client sends and receives messages with the ``threading`` API:
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.. code:: python
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import asyncio
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from websockets.sync.client import connect
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def hello():
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with connect("ws://localhost:8765") as websocket:
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websocket.send("Hello world!")
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message = websocket.recv()
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print(f"Received: {message}")
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hello()
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Does that look good?
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`Get started with the tutorial! <https://websockets.readthedocs.io/en/stable/intro/index.html>`_
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Why should I use ``websockets``?
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--------------------------------
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The development of ``websockets`` is shaped by four principles:
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1. **Correctness**: ``websockets`` is heavily tested for compliance with
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:rfc:`6455`. Continuous integration fails under 100% branch coverage.
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2. **Simplicity**: all you need to understand is ``msg = await ws.recv()`` and
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``await ws.send(msg)``. ``websockets`` takes care of managing connections
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so you can focus on your application.
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3. **Robustness**: ``websockets`` is built for production. For example, it was
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the only library to `handle backpressure correctly`_ before the issue
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became widely known in the Python community.
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4. **Performance**: memory usage is optimized and configurable. A C extension
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accelerates expensive operations. It's pre-compiled for Linux, macOS and
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Windows and packaged in the wheel format for each system and Python version.
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Documentation is a first class concern in the project. Head over to `Read the
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Docs`_ and see for yourself.
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.. _Read the Docs: https://websockets.readthedocs.io/
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.. _handle backpressure correctly: https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#websocket-servers
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Why shouldn't I use ``websockets``?
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-----------------------------------
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* If you prefer callbacks over coroutines: ``websockets`` was created to
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provide the best coroutine-based API to manage WebSocket connections in
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Python. Pick another library for a callback-based API.
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* If you're looking for a mixed HTTP / WebSocket library: ``websockets`` aims
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at being an excellent implementation of :rfc:`6455`: The WebSocket Protocol
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and :rfc:`7692`: Compression Extensions for WebSocket. Its support for HTTP
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is minimal — just enough for an HTTP health check.
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If you want to do both in the same server, look at HTTP frameworks that
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build on top of ``websockets`` to support WebSocket connections, like
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Sanic_.
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.. _Sanic: https://sanicframework.org/en/
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What else?
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----------
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Bug reports, patches and suggestions are welcome!
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To report a security vulnerability, please use the `Tidelift security
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contact`_. Tidelift will coordinate the fix and disclosure.
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.. _Tidelift security contact: https://tidelift.com/security
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For anything else, please open an issue_ or send a `pull request`_.
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.. _issue: https://github.com/aaugustin/websockets/issues/new
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.. _pull request: https://github.com/aaugustin/websockets/compare/
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Participants must uphold the `Contributor Covenant code of conduct`_.
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.. _Contributor Covenant code of conduct: https://github.com/aaugustin/websockets/blob/main/CODE_OF_CONDUCT.md
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``websockets`` is released under the `BSD license`_.
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.. _BSD license: https://github.com/aaugustin/websockets/blob/main/LICENSE
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