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184 lines
7.7 KiB
184 lines
7.7 KiB
9 months ago
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Metadata-Version: 2.1
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Name: websocket-client
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Version: 1.7.0
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Summary: WebSocket client for Python with low level API options
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Home-page: https://github.com/websocket-client/websocket-client.git
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Download-URL: https://github.com/websocket-client/websocket-client/releases
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Author: liris
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Author-email: liris.pp@gmail.com
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Maintainer: engn33r
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Maintainer-email: websocket.client@proton.me
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License: Apache-2.0
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Project-URL: Documentation, https://websocket-client.readthedocs.io/
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Project-URL: Source, https://github.com/websocket-client/websocket-client/
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Keywords: websockets client
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Classifier: Development Status :: 4 - Beta
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Classifier: License :: OSI Approved :: Apache Software License
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Classifier: Programming Language :: Python :: 3
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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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Classifier: Programming Language :: Python :: 3.12
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Classifier: Operating System :: MacOS :: MacOS X
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Classifier: Operating System :: POSIX
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Classifier: Operating System :: Microsoft :: Windows
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Classifier: Topic :: Internet
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Classifier: Topic :: Software Development :: Libraries :: Python Modules
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Classifier: Intended Audience :: Developers
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Requires-Python: >=3.8
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Description-Content-Type: text/markdown
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License-File: LICENSE
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Provides-Extra: docs
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Requires-Dist: Sphinx >=6.0 ; extra == 'docs'
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Requires-Dist: sphinx-rtd-theme >=1.1.0 ; extra == 'docs'
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Provides-Extra: optional
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Requires-Dist: python-socks ; extra == 'optional'
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Requires-Dist: wsaccel ; extra == 'optional'
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Provides-Extra: test
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Requires-Dist: websockets ; extra == 'test'
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[](https://websocket-client.readthedocs.io/)
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[](https://github.com/websocket-client/websocket-client/actions/workflows/build.yml)
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[](https://codecov.io/gh/websocket-client/websocket-client)
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[](https://pepy.tech/project/websocket-client)
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[](https://pypi.org/project/websocket_client/)
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[](https://opensource.org/licenses/Apache-2.0)
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[](https://github.com/psf/black)
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# websocket-client
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websocket-client is a WebSocket client for Python. It provides access
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to low level APIs for WebSockets. websocket-client implements version
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[hybi-13](https://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-13)
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of the WebSocket protocol. This client does not currently support the
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permessage-deflate extension from
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[RFC 7692](https://tools.ietf.org/html/rfc7692).
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## Documentation
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This project's documentation can be found at
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[https://websocket-client.readthedocs.io/](https://websocket-client.readthedocs.io/)
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## Contributing
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Please see the [contribution guidelines](https://github.com/websocket-client/websocket-client/blob/master/CONTRIBUTING.md)
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## Installation
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You can use either `python3 setup.py install` or `pip3 install websocket-client`
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to install. This module is tested on Python 3.8+.
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There are several optional dependencies that can be installed to enable
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specific websocket-client features.
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- To install `python-socks` for proxy usage and `wsaccel` for a minor performance boost, use:
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`pip3 install websocket-client[optional]`
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- To install `websockets` to run unit tests using the local echo server, use:
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`pip3 install websocket-client[test]`
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- To install `Sphinx` and `sphinx_rtd_theme` to build project documentation, use:
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`pip3 install websocket-client[docs]`
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While not a strict dependency, [rel](https://github.com/bubbleboy14/registeredeventlistener)
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is useful when using `run_forever` with automatic reconnect. Install rel with `pip3 install rel`.
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Footnote: Some shells, such as zsh, require you to escape the `[` and `]` characters with a `\`.
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## Usage Tips
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Check out the documentation's FAQ for additional guidelines:
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[https://websocket-client.readthedocs.io/en/latest/faq.html](https://websocket-client.readthedocs.io/en/latest/faq.html)
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Known issues with this library include lack of WebSocket Compression
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support (RFC 7692) and [minimal threading documentation/support](https://websocket-client.readthedocs.io/en/latest/threading.html).
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## Performance
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The `send` and `validate_utf8` methods can sometimes be bottleneck.
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You can disable UTF8 validation in this library (and receive a
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performance enhancement) with the `skip_utf8_validation` parameter.
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If you want to get better performance, install wsaccel. While
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websocket-client does not depend on wsaccel, it will be used if
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available. wsaccel doubles the speed of UTF8 validation and
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offers a very minor 10% performance boost when masking the
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payload data as part of the `send` process. Numpy used to
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be a suggested performance enhancement alternative, but
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[issue #687](https://github.com/websocket-client/websocket-client/issues/687)
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found it didn't help.
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## Examples
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Many more examples are found in the
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[examples documentation](https://websocket-client.readthedocs.io/en/latest/examples.html).
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### Long-lived Connection
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Most real-world WebSockets situations involve longer-lived connections.
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The WebSocketApp `run_forever` loop will automatically try to reconnect
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to an open WebSocket connection when a network
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connection is lost if it is provided with:
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- a `dispatcher` argument (async dispatcher like rel or pyevent)
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- a non-zero `reconnect` argument (delay between disconnection and attempted reconnection)
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`run_forever` provides a variety of event-based connection controls
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using callbacks like `on_message` and `on_error`.
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`run_forever` **does not automatically reconnect** if the server
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closes the WebSocket gracefully (returning
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[a standard websocket close code](https://www.rfc-editor.org/rfc/rfc6455.html#section-7.4.1)).
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[This is the logic](https://github.com/websocket-client/websocket-client/pull/838#issuecomment-1228454826) behind the decision.
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Customizing behavior when the server closes
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the WebSocket should be handled in the `on_close` callback.
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This example uses [rel](https://github.com/bubbleboy14/registeredeventlistener)
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for the dispatcher to provide automatic reconnection.
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```python
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import websocket
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import _thread
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import time
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import rel
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def on_message(ws, message):
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print(message)
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def on_error(ws, error):
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print(error)
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def on_close(ws, close_status_code, close_msg):
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print("### closed ###")
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def on_open(ws):
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print("Opened connection")
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if __name__ == "__main__":
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websocket.enableTrace(True)
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ws = websocket.WebSocketApp("wss://api.gemini.com/v1/marketdata/BTCUSD",
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on_open=on_open,
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on_message=on_message,
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on_error=on_error,
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on_close=on_close)
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ws.run_forever(dispatcher=rel, reconnect=5) # Set dispatcher to automatic reconnection, 5 second reconnect delay if connection closed unexpectedly
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rel.signal(2, rel.abort) # Keyboard Interrupt
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rel.dispatch()
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```
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### Short-lived Connection
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This is if you want to communicate a short message and disconnect
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immediately when done. For example, if you want to confirm that a WebSocket
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server is running and responds properly to a specific request.
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```python
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from websocket import create_connection
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ws = create_connection("ws://echo.websocket.events/")
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print(ws.recv())
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print("Sending 'Hello, World'...")
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ws.send("Hello, World")
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print("Sent")
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print("Receiving...")
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result = ws.recv()
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print("Received '%s'" % result)
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ws.close()
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```
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