How to connect to poloniex.com websocket api using a python library

Question

I am trying to connect to wss://api.poloniex.com and subscribe to ticker. I can\'t find any working example in python. I have tried to use autobahn/twisted and websocket-cli

Answer 1

This uses the undocumented websocket endpoint because Poloniex has pulled support for the original WAMP socket endpoint.

import websocket
import thread
import time
import json

def on_message(ws, message):
    print(message)

def on_error(ws, error):
    print(error)

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

def on_open(ws):
    print("ONOPEN")
    def run(*args):
        ws.send(json.dumps({'command':'subscribe','channel':1001}))
        ws.send(json.dumps({'command':'subscribe','channel':1002}))
        ws.send(json.dumps({'command':'subscribe','channel':1003}))
        ws.send(json.dumps({'command':'subscribe','channel':'BTC_XMR'}))
        while True:
            time.sleep(1)
        ws.close()
        print("thread terminating...")
    thread.start_new_thread(run, ())


if __name__ == "__main__":
    websocket.enableTrace(True)
    ws = websocket.WebSocketApp("wss://api2.poloniex.com/",
                              on_message = on_message,
                              on_error = on_error,
                              on_close = on_close)
    ws.on_open = on_open
    ws.run_forever()

The channels are:

1001 = trollbox (you will get nothing but a heartbeat)
1002 = ticker
1003 = base coin 24h volume stats
1010 = heartbeat
'MARKET_PAIR' = market order books