Project description
Websocket-client module is websocket client for Python. This provide the low level APIs for WebSocket. All APIs is the synchronous functions.
Websocket-client supports only hybi-13.
License
Installation
This module was tested on Python 2.7 and Python 3.4+.
Type "python setup.py Install" or "Pip install websocket-client" to install.
caution!
From v0.16.0, we can install by ' pip install Websocket-client ' for Python 3.
This module depends on
- Six
- Backports.ssl_match_hostname for Python 2.x
Performance
"Send" method is too slow on pure python. If you want to get better performace, please install NumPy or wsaccel. You can get the best performance from NumPy.
How about Python 3
Now, we support Python 3 on single source code from version 0.14.0. Thanks, @battlemidget and @ralphbean.
HTTP Proxy
Support WebSocket access via HTTP proxy. The proxy server must allow "CONNECT" method to WebSocket port. Default squid setting is "allowed-CONNECT only HTTPS PORT".
Current implementation of Websocket-client is using "CONNECT" method via proxy.
Example
WebSocketwebsocket. WebSocket()ws. Connect("Ws://example.com/websocket"http_proxy_host="Proxy_host_name"http_proxy_ Port=3128)
exampleslong-lived Connection
This example is similar-to-WebSocket code looks in browsers using JavaScript.
ImportWebSocketTry: ImportThreadexceptImporterror:Import_thread as ThreadImport Timedefon_message (WS, message):Print(message)defon_error (WS, error):Print(Error)defon_close (WS):Print("# # # closed # #")defOn_open (WS):defRun (*args): forIinchRange (3): Time.sleep (1) Ws.send ("Hello%d"%i) Time.sleep (1) Ws.close ()Print("thread terminating ...") Thread.start_new_thread (Run, ())if __name__=="__main__": Websocket.enabletrace (True) WS= WebSocket. Websocketapp ("ws://echo.websocket.org/", On_message=On_message, On_error=On_error, On_close=on_close) Ws.on_open=on_open ws.run_forever ()
Short-lived one-off send-receive
This is if you want to communicate a short message and disconnect immediately when done.
fromWebSocketImportCREATE_CONNECTIONWS= Create_connection ("ws://echo.websocket.org/")Print("sending ' Hello, World ' ...") Ws.send ("Hello, World")Print("Sent")Print("receiving ...") Result=ws.recv ()Print("Received '%s '"%result) ws.close ()
If you want to customize socket options, set sockopt.
sockopt Example
from Import = create_connection ("ws://echo.websocket.org/", sockopt= ( Socket. IPPROTO_TCP, Socket. Tcp_nodelay),))
More Advanced:custom class
You can also write your own class for the connection, if you want to handle the nitty-gritty details yourself.
ImportSocket fromWebSocketImportcreate_connection, WebSocketclassMywebsocket (WebSocket):defRecv_frame (self): frame=super (). Recv_frame ()Print('yay! I got this frame:', frame)returnframews= Create_connection ("ws://echo.websocket.org/", Sockopt= (socket. IPPROTO_TCP, Socket. Tcp_nodelay, 1),), Class_=mywebsocket)
Faqhow To disable SSL cert verification?
Please set sslopt to {"Cert_reqs": SSL. Cert_none}.
Websocketapp sample
WS = WebSocket. Websocketapp ("wss://echo.websocket.org") ws.run_forever (sslopt={" Cert_reqs ": SSL. Cert_none})
Create_connection sample
WS = Websocket.create_connection ("wss://echo.websocket.org", sslopt={ " Cert_reqs ": SSL. Cert_none})
WebSocket sample
WS = WebSocket. WebSocket (sslopt={"cert_reqs": SSL. Cert_none}) Ws.connect ("wss://echo.websocket.org")
How to disable hostname verification.
Please set sslopt to {"Check_hostname": False}. (Since v0.18.0)
Websocketapp sample
WS = WebSocket. Websocketapp ("wss://echo.websocket.org") ws.run_forever (sslopt={" Check_hostname ": False})
Create_connection sample
WS = Websocket.create_connection ("wss://echo.websocket.org", sslopt={ " Check_hostname ": False})
WebSocket sample
WS = WebSocket. WebSocket (sslopt={"check_hostname": False}) Ws.connect ("wss:// echo.websocket.org")
How to enable SNI?
SNI support is available for Python 2.7.9+ and 3.2+. It'll be enabled automatically whenever possible.
Sub protocols.
The server needs to support sub protocols, please set the Subprotocol as this.
Subprotocol sample
WS = Websocket.create_connection ("ws://example.com/websocket", subprotocols=[" binary""base64"])
wsdump.py
Wsdump.py is a simple WebSocket test (Debug) tool.
Sample for echo.websocket.org:
$ wsdump.py Ws://echo.websocket.org/press Ctrl + C to quit> hello, websocket< Hello, websocket> how is you?< Ho W is you?
Usage
Usage
wsdump.py [-h] [-V [VERBOSE]] Ws_url
WebSocket Simple Dump Tool
-
Positional arguments:
-
Ws_url websocket URL. Ex. ws://echo.websocket.org/
-
Optional arguments:
-
-h, --help |
Show this help message and exit |
-
Websocketapp
-
-v VERBOSE, --verbose VERBOSE |
|
Set verbose mode. If set to 1, show opcode. If set to 2, enable to trace WebSocket module |
Example
$ wsdump.py ws://echo.websocket.org/$ wsdump.py ws://echo.websocket.org/-v$ wsdump.py ws://echo.websocket.org/-vv
WebSocket Client for Python