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WebSocket client for python3. hybi13 is supported.

Project description


websocket-client module is WebSocket client for python. This provide the low level APIs for WebSocket. All APIs are the synchronous functions.

websocket-client supports only hybi-13.

How about Python 2

py2( ) branch is for python 2. Every test case is passed.
If you are using python2, please check it.




This module is tested on Python 3.3.

Check out git repository of py3 branch, and type "python3 install".

This module does not depend on any other module.


Low Level API example::

from websocket import create_connection
ws = create_connection("ws://")
print("Sending 'Hello, World'...")
ws.send("Hello, World")
result = ws.recv()
print("Received '%s'" % result)

If you want to customize socket options, set sockopt.

sockopt example:

from websocket import create_connection
ws = create_connection("ws://".
sockopt=((socket.IPPROTO_TCP, socket.TCP_NODELAY),) )

JavaScript websocket-like API example::

import websocket
import threading
import time

def on_message(ws, message):
print message

def on_error(ws, error):

def on_close(ws):
print("### closed ###")

def on_open(ws):
def run(*args):
for i in range(3):
ws.send("Hello %d" % i)
print("thread terminating...")
threading.Thread(target=run, args=()).start()

if __name__ == "__main__":
ws = websocket.WebSocketApp("ws://",
on_message = on_message,
on_error = on_error,
on_close = on_close)
ws.on_open = on_open

============ is simple WebSocket test(debug) tool.

sample for

$ ws://
Press Ctrl+C to quit
> Hello, WebSocket
< Hello, WebSocket
> How are you?
< How are you?


usage:: [-h] [-v [VERBOSE]] ws_url

WebSocket Simple Dump Tool

positional arguments:
ws_url websocket url. ex. ws://

optional arguments:
-h, --help show this help message and exit

-v VERBOSE, --verbose VERBOSE set verbose mode. If set to 1, show opcode. If set to 2, enable to trace websocket module


$ ws://
$ ws:// -v
$ ws:// -vv


- v0.12.0

- support keep alive for WebSocketApp(ISSUE#34)
- fix some SSL bugs(ISSUE#35, #36)
- fix "Timing out leaves websocket library in bad state"(ISSUE#37)
- fix "WebSocketApp.run_with_no_err() silently eats all exceptions"(ISSUE#38)
- WebSocketTimeoutException will be raised for ws/wss timeout(ISSUE#40)
- improve wsdump message(ISSUE#42)
- support fragmentation message(ISSUE#43)
- fix some bugs

- v0.11.0

- Only log non-normal close status(ISSUE#31)
- Fix default Origin isn't URI(ISSUE#32)
- fileno support(ISSUE#33)

- v0.10.0

- allow to set HTTP Header to WebSocketApp(ISSUE#27)
- fix typo in pydoc(ISSUE#28)
- Passing a socketopt flag to the websocket constructor(ISSUE#29)
- websocket.send fails with long data(ISSUE#30)

- v0.9.0

- allow to set opcode in WebSocketApp.send(ISSUE#25)
- allow to modify Origin(ISSUE#26)

- v0.8.0

- many bug fix
- some performance improvement

- v0.7.0

- fixed problem to read long data.(ISSUE#12)
- fix buffer size boundary violation

- v0.6.0

- Patches: UUID4, self.keep_running, mask_key (ISSUE#11)
- add tool

- v0.5.2

- fix Echo App Demo Throw Error: 'NoneType' object has no attribute 'opcode (ISSUE#10)

- v0.5.1

- delete invalid print statement.

- v0.5.0

- support hybi-13 protocol.

- v0.4.1

- fix incorrect custom header order(ISSUE#1)

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