websocket/_app.py

The _app.py file

class websocket._app.WebSocketApp(url, header=None, on_open=None, on_message=None, on_error=None, on_close=None, on_ping=None, on_pong=None, on_cont_message=None, keep_running=True, get_mask_key=None, cookie=None, subprotocols=None, on_data=None)[source]

Higher level of APIs are provided. The interface is like JavaScript WebSocket object.

__init__(url, header=None, on_open=None, on_message=None, on_error=None, on_close=None, on_ping=None, on_pong=None, on_cont_message=None, keep_running=True, get_mask_key=None, cookie=None, subprotocols=None, on_data=None)[source]

WebSocketApp initialization

Parameters
  • url (str) – Websocket url.

  • header (list or dict) – Custom header for websocket handshake.

  • on_open (function) – Callback object which is called at opening websocket. on_open has one argument. The 1st argument is this class object.

  • on_message (function) – Callback object which is called when received data. on_message has 2 arguments. The 1st argument is this class object. The 2nd argument is utf-8 data received from the server.

  • on_error (function) – Callback object which is called when we get error. on_error has 2 arguments. The 1st argument is this class object. The 2nd argument is exception object.

  • on_close (function) – Callback object which is called when connection is closed. on_close has 3 arguments. The 1st argument is this class object. The 2nd argument is close_status_code. The 3rd argument is close_msg.

  • on_cont_message (function) – Callback object which is called when a continuation frame is received. on_cont_message has 3 arguments. The 1st argument is this class object. The 2nd argument is utf-8 string which we get from the server. The 3rd argument is continue flag. if 0, the data continue to next frame data

  • on_data (function) – Callback object which is called when a message received. This is called before on_message or on_cont_message, and then on_message or on_cont_message is called. on_data has 4 argument. The 1st argument is this class object. The 2nd argument is utf-8 string which we get from the server. The 3rd argument is data type. ABNF.OPCODE_TEXT or ABNF.OPCODE_BINARY will be came. The 4th argument is continue flag. If 0, the data continue

  • keep_running (bool) – This parameter is obsolete and ignored.

  • get_mask_key (function) – A callable function to get new mask keys, see the WebSocket.set_mask_key’s docstring for more information.

  • cookie (str) – Cookie value.

  • subprotocols (list) – List of available sub protocols. Default is None.

close(**kwargs)[source]

Close websocket connection.

run_forever(sockopt=None, sslopt=None, ping_interval=0, ping_timeout=None, ping_payload='', http_proxy_host=None, http_proxy_port=None, http_no_proxy=None, http_proxy_auth=None, skip_utf8_validation=False, host=None, origin=None, dispatcher=None, suppress_origin=False, proxy_type=None)[source]

Run event loop for WebSocket framework.

This loop is an infinite loop and is alive while websocket is available.

Parameters
  • sockopt (tuple) – Values for socket.setsockopt. sockopt must be tuple and each element is argument of sock.setsockopt.

  • sslopt (dict) – Optional dict object for ssl socket option.

  • ping_interval (int or float) – Automatically send “ping” command every specified period (in seconds). If set to 0, no ping is sent periodically.

  • ping_timeout (int or float) – Timeout (in seconds) if the pong message is not received.

  • ping_payload (str) – Payload message to send with each ping.

  • http_proxy_host (str) – HTTP proxy host name.

  • http_proxy_port (int or str) – HTTP proxy port. If not set, set to 80.

  • http_no_proxy (list) – Whitelisted host names that don’t use the proxy.

  • skip_utf8_validation (bool) – skip utf8 validation.

  • host (str) – update host header.

  • origin (str) – update origin header.

  • dispatcher (Dispatcher object) – customize reading data from socket.

  • suppress_origin (bool) – suppress outputting origin header.

Returns

teardown – False if caught KeyboardInterrupt, True if other exception was raised during a loop

Return type

bool

send(data, opcode=1)[source]

send message

Parameters
  • data (str) – Message to send. If you set opcode to OPCODE_TEXT, data must be utf-8 string or unicode.

  • opcode (int) – Operation code of data. Default is OPCODE_TEXT.