Question

我正试图从这个网站上抓取最新的出价并询问价格“http://btc-exchange.com/” 我可以看到这个socket.io

提供的价格

wss://pusher.mistertango.com/socket.io/?EIO=3&transport=websocket&sid=XXX

正在通过此调用生成sessionID

https://pusher.mistertango.com/socket.io/?EIO=3&transport=polling&t=1517079662330-10

这是我目前正在使用的代码

import requests
from websocket import create_connection
import json

SID_url = "https://pusher.mistertango.com/socket.io/?EIO=3&transport=polling"
SID_req = requests.get(SID_url, headers={'User-Agent': 'Mozilla/5.0'}).text
SID = SID_req[SID_req.index("sid")+6:SID_req.index(",")-1]
print(SID_req)
print(SID)

ws = create_connection("wss://pusher.mistertango.com/socket.io/?EIO=3&transport=websocket&sid="+SID)
ws.send('2probe')
print(ws.recv())
ws.send('5')
print(ws.recv())
ws.send('42["subscribe",{"chan":"market-e559906eda4362f58bcaab40a4bfb5b4"}]')
while True:
    result = ws.recv()
    print(result)
ws.close()

这是代码

的输出

    ÿ0{"sid":"mURV8OnaNqax_AmvAAF2","upgrades":["websocket"],"pingInterval":25000,"pingTimeout":60000}
mURV8OnaNqax_AmvAAF2
3probe
40

我发送的消息基于我在chrome-dev工具中看到的消息。 Websocket msgs

我的连接在'40'之后停止接收任何消息。我做错了什么？

Answer 1

有您想要的代码。经过测试并有效

#!/usr/bin/env python
from socketIO_client import SocketIO

def on_connect():
    print('connect')

def on_disconnect():
    print('disconnect')

def on_reconnect():
    print('reconnect')

def on_aaa_response(*args):
    print('on_aaa_response', args)

def on_bbb_response(*args):
    print('on_bbb_response', args)

with SocketIO('https://pusher.mistertango.com') as socketIO:
    socketIO.on('connect', on_connect)
    socketIO.on('disconnect', on_disconnect)
    socketIO.on('reconnect', on_reconnect)
    socketIO.on('market-orderbook', on_aaa_response)
    socketIO.emit('subscribe', {'chan': 'market-orderbook'}, on_bbb_response)
    socketIO.wait_for_callbacks(seconds=10)

Answer 2

您可以使用asyncio和websocket来解决您的问题。您可以使用以下命令安装websocket

pip install websocket

之后，使用以下代码片段作为与Web服务器通信的示例：

import asyncio
import websockets

async def responseFunc(uri):
    async with websockets.connect(uri) as websocket:
        await websocket.send("Hello world!")

url = "wss://pusher.mistertango.com/socket.io/?EIO=3&transport=websocket&sid=XXX"

asyncio.get_event_loop().run_until_complete(
    responseFunc(url))

参考：https://pypi.python.org/pypi/websockets

使用python

2 个答案: