检查代码中是否正确设置了WebSocket连接的 Ping/Pong 操作，建议添加心跳检测，避免连接意外断开。以下是示例代码：

import websocket
import json
import threading
import time

# 设置WebSocket连接
ws = websocket.WebSocketApp('wss://stream.binance.com:9443/ws/btcusdt@aggTrade')

# 添加心跳检测
def heartbeat():
    while True:
        time.sleep(30)
        try:
            ws.ping()
        except Exception as e:
            print('ping failed:', e)

# 启动心跳检测线程
t = threading.Thread(target=heartbeat)
t.daemon = True
t.start()

# WebSocket连接回调函数
def on_message(ws, message):
    data = json.loads(message)
    print(data)

ws.on_message = on_message

# 启动WebSocket连接
ws.run_forever()