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168 lines
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168 lines
6.1 KiB
Plaintext
Metadata-Version: 2.1
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Name: websockets
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Version: 8.1
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Summary: An implementation of the WebSocket Protocol (RFC 6455 & 7692)
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Home-page: https://github.com/aaugustin/websockets
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Author: Aymeric Augustin
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Author-email: aymeric.augustin@m4x.org
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License: BSD
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Platform: UNKNOWN
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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 :: 3.6
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Classifier: Programming Language :: Python :: 3.7
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Classifier: Programming Language :: Python :: 3.8
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Requires-Python: >=3.6.1
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.. image:: logo/horizontal.svg
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:width: 480px
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:alt: websockets
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|rtd| |pypi-v| |pypi-pyversions| |pypi-l| |pypi-wheel| |circleci| |codecov|
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.. |rtd| image:: https://readthedocs.org/projects/websockets/badge/?version=latest
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:target: https://websockets.readthedocs.io/
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.. |pypi-v| image:: https://img.shields.io/pypi/v/websockets.svg
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:target: https://pypi.python.org/pypi/websockets
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.. |pypi-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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.. |pypi-l| image:: https://img.shields.io/pypi/l/websockets.svg
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:target: https://pypi.python.org/pypi/websockets
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.. |pypi-wheel| image:: https://img.shields.io/pypi/wheel/websockets.svg
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:target: https://pypi.python.org/pypi/websockets
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.. |circleci| image:: https://img.shields.io/circleci/project/github/aaugustin/websockets.svg
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:target: https://circleci.com/gh/aaugustin/websockets
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.. |codecov| image:: https://codecov.io/gh/aaugustin/websockets/branch/master/graph/badge.svg
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:target: https://codecov.io/gh/aaugustin/websockets
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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
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Python with a focus on correctness and simplicity.
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.. _servers: https://github.com/aaugustin/websockets/blob/master/example/server.py
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.. _clients: https://github.com/aaugustin/websockets/blob/master/example/client.py
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Built on top of ``asyncio``, Python's standard asynchronous I/O framework, it
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provides an elegant coroutine-based API.
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`Documentation is available on Read the Docs. <https://websockets.readthedocs.io/>`_
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Here's how a client sends and receives messages:
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.. copy-pasted because GitHub doesn't support the include directive
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.. code:: python
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#!/usr/bin/env python
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import asyncio
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import websockets
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async def hello(uri):
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async with websockets.connect(uri) as websocket:
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await websocket.send("Hello world!")
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await websocket.recv()
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asyncio.get_event_loop().run_until_complete(
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hello('ws://localhost:8765'))
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And here's an echo server:
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.. code:: python
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#!/usr/bin/env python
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import asyncio
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import websockets
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async def echo(websocket, path):
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async for message in websocket:
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await websocket.send(message)
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asyncio.get_event_loop().run_until_complete(
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websockets.serve(echo, 'localhost', 8765))
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asyncio.get_event_loop().run_forever()
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Does that look good?
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`Get started with the tutorial! <https://websockets.readthedocs.io/en/stable/intro.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. **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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2. **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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3. **Quality**: ``websockets`` is heavily tested. Continuous integration fails
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under 100% branch coverage. Also it passes the industry-standard `Autobahn
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Testsuite`_.
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4. **Performance**: memory use is configurable. An extension written in C
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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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.. _Autobahn Testsuite: https://github.com/aaugustin/websockets/blob/master/compliance/README.rst
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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 a HTTP health check.
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* If you want to use Python 2: ``websockets`` builds upon ``asyncio`` which
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only works on Python 3. ``websockets`` requires Python ≥ 3.6.1.
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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/master/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/master/LICENSE
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