Poloniex新的Websocket API

Question

我正在嘗試將新的websocket API與Poloniex一起使用 。 Wamp現在已被棄用，關於如何簡單調用實時公共數據（例如音量等）的信息很少。

我發現此代碼似乎實現了此套接字，但出現在bitestream中。 當我運行代碼時，它可以很好地調用標頭，並且也可以很好地獲得響應標頭，似乎可以發送和接收數據，然后關閉套接字。 如何訂閱音量頻道並解碼流數據？

import websocket
import threading
import time
import json
from threading import Thread


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("ON OPEN")
    def run(*args):
        ws.send(json.dumps({'command':'subscribe','channel':1003}))
        while True:
            time.sleep(1)
        ws.close()
        print("thread terminating...")
    threading.Thread(target=run).start()


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()


Am expecting a streaming connection to volume data but get this:

ON OPEN
send: b"\x81\xa9.)\x1d\xb8U\x0b~\xd7CD|\xd6J\x0b'\x98\x0cZh\xda]Jo\xd1LL?\x94\x0e\x0b~\xd0OGs\xddB\x0b'\x98\x1f\x19-\x8bS"
[1003,1]
unorderable types: float() > NoneType()
send: b'\x88\x82fWPGe\xbf'
### closed ###

Polo似乎認為我已訂閱：

Answer 1

奇怪，因為我無法重現您的錯誤，請嘗試以下操作：

import websocket
import threading
import time
import json
from threading import Thread


def on_message(ws, message):
    json_msg = json.loads(message)
    channel_id = int(json_msg[0])
    if (channel_id==1003) and len(json_msg)>2:
        print("volume update")
        print(json_msg[2][2])


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

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


def on_open(ws):
    print("ON OPEN")
    def run(*args):
        ws.send(json.dumps({'command':'subscribe','channel':"1003"}))

    threading.Thread(target=run).start()


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()

給你的：

[...]
ON OPEN
send: '\x81\xab\xc0\xe6~#\xbb\xc4\x1dL\xad\x8b\x1fM\xa4\xc4D\x03\xe2\x95\x0bA\xb3\x85\x0cJ\xa2\x83\\\x0f\xe0\xc4\x1dK\xa1\x88\x10F\xac\xc4D\x03\xe2\xd7N\x13\xf3\xc4\x03'
volume update
{u'USDT': u'5340084.934', u'ETH': u'914.931', u'XMR': u'194.895', u'BTC': u'1927.227', u'USDC': u'1275367.951'}