可否提供python获取直播弹幕的示例代码？

[xuan06zyx]

我用gpt生成的代码反复修改测试报错永远是 websockets.exceptions.ConnectionClosedError: no close frame received or sent
目前我的代码是以下

import json
import base64
import asyncio

import websockets
from urllib.parse import quote


async def send_heartbeat(websocket):
    while True:
        await websocket.send("ping")
        await asyncio.wait_for(websocket.recv(), timeout=5)
        print("发送心跳包")
        await asyncio.sleep(30)  # 每30秒发送一次心跳包


async def connect_and_print(url):
    async with websockets.connect(url) as websocket:
        start = json.dumps({"roomid": 465244,
                            "protover": 2,
                            "platform": "web",
                            "type": 2
                            })
        await websocket.send(start)
        print(start)
        print("加入房间")
        await asyncio.sleep(5)
        await websocket.send("ping")
        print("发送心跳包")
        await asyncio.sleep(5)
        await asyncio.wait_for(websocket.recv(), timeout=5)
        print('接收消息')

        # await asyncio.sleep(5)
        # print("发送心跳包")
        # await websocket.send("ping")
        # await asyncio.sleep(5)

        while True:
            # 接收消息
            message = await asyncio.wait_for(websocket.recv(), timeout=5)
            print(f"Received message: {message}")


# 替换为你的 WebSocket 服务器地址
websocket_server_url = "wss://broadcastlv.chat.bilibili.com/sub"

# 使用 asyncio 运行协程
asyncio.run(connect_and_print(websocket_server_url))

大概是在进房以后无论是心跳还是进房消息都可以发送 后续不论是接收消息还是再次发送心跳都会报错