如何在Python上生成本地SDP

import asyncio
from aiortc import RTCPeerConnection, RTCSessionDescription

async def generate_local_sdp():
    # 创建RTCPeerConnection对象
    pc = RTCPeerConnection()

    # 创建本地数据通道
    pc.createDataChannel('channel')

    # 生成本地SDP
    offer = await pc.createOffer()
    await pc.setLocalDescription(offer)

    # 获取本地SDP
    local_sdp = pc.localDescription.sdp
    print("Local SDP:\n", local_sdp)

    # 关闭连接
    await pc.close()

# 运行生成本地SDP的异步函数
asyncio.run(generate_local_sdp())