websockets
?websockets
is a library for building WebSocket servers and clients in Python with a focus on correctness and simplicity.
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:
#!/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:
#!/usr/bin/env python
import asyncio
from websockets import serve
async def echo(websocket, path):
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!
Available as part of the Tidelift Subscription
The maintainers of websockets and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.
(If you contribute to websockets
and would like to become an official support provider, let me know.)
websockets
?The development of websockets
is shaped by four principles:
msg = await ws.recv()
and await ws.send(msg)
; websockets
takes care of managing connections so you can focus on your application.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.websockets
is heavily tested. Continuous integration fails under 100% branch coverage. Also it passes the industry-standard Autobahn Testsuite.Documentation is a first class concern in the project. Head over to Read the Docs and see for yourself.
websockets
?websockets
was created to provide the best coroutine-based API to manage WebSocket connections in Python. Pick another library for a callback-based API.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.websockets
builds upon asyncio
which only works on Python 3. websockets
requires Python ≥ 3.7.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.
For anything else, please open an issue or send a pull request.
Participants must uphold the Contributor Covenant code of conduct.
Author: aaugustin
The Demo/Documentation: View The Demo/Documentation
Download Link: Download The Source Code
Official Website: https://github.com/aaugustin/websockets
License: BSD license.
#python #websocket