Metadata-Version: 2.1
Name: websockets
Version: 10.3
Summary: An implementation of the WebSocket Protocol (RFC 6455 & 7692)
Home-page: https://github.com/aaugustin/websockets
Author: Aymeric Augustin
Author-email: aymeric.augustin@m4x.org
License: BSD
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/aaugustin/websockets/issues
Platform: UNKNOWN
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 :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Requires-Python: >=3.7
License-File: LICENSE
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:width: 480px
:alt: websockets
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:target: https://pypi.python.org/pypi/websockets
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:target: https://pypi.python.org/pypi/websockets
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:target: https://pypi.python.org/pypi/websockets
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:target: https://pypi.python.org/pypi/websockets
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:target: https://github.com/aaugustin/websockets/actions/workflows/tests.yml
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:target: https://websockets.readthedocs.io/
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, it
provides an elegant coroutine-based API.
`Documentation is available on Read the Docs. `_
Here's how a client sends and receives messages:
.. copy-pasted because GitHub doesn't support the include directive
.. code:: python
#!/usr/bin/env python
import asyncio
from websockets import connect
async def hello(uri):
async with connect(uri) as websocket:
await websocket.send("Hello world!")
await websocket.recv()
asyncio.run(hello("ws://localhost:8765"))
And here's an echo server:
.. code:: python
#!/usr/bin/env python
import asyncio
from websockets import serve
async def echo(websocket):
async for message in websocket:
await websocket.send(message)
async def main():
async with serve(echo, "localhost", 8765):
await asyncio.Future() # run forever
asyncio.run(main())
Does that look good?
`Get started with the tutorial! `_
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 a HTTP health check.
If you want to do both in the same server, look at HTTP frameworks that
build on top of ``websockets`` to support WebSocket connections, like
Sanic_.
.. _Sanic: https://sanicframework.org/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/aaugustin/websockets/issues/new
.. _pull request: https://github.com/aaugustin/websockets/compare/
Participants must uphold the `Contributor Covenant code of conduct`_.
.. _Contributor Covenant code of conduct: https://github.com/aaugustin/websockets/blob/main/CODE_OF_CONDUCT.md
``websockets`` is released under the `BSD license`_.
.. _BSD license: https://github.com/aaugustin/websockets/blob/main/LICENSE