使用VUE+WebRTC快速实现简单的音视频通话

<template>
  <div>
    <video ref="localVideo" autoplay muted></video>
    <video ref="remoteVideo" autoplay></video>
    <button @click="startCall">开始通话</button>
  </div>
</template>
 
<script>
export default {
  methods: {
    startCall() {
      // 获取本地视频流
      navigator.mediaDevices.getUserMedia({ video: true, audio: true })
        .then(stream => {
          this.$refs.localVideo.srcObject = stream;
 
          // 初始化 RTCPeerConnection
          const peerConnection = new RTCPeerConnection();
 
          // 将本地视频流添加到连接
          stream.getTracks().forEach(track => peerConnection.addTrack(track, stream));
 
          // 创建并监听用于接收数据的数据通道
          const dataChannel = peerConnection.createDataChannel('dataChannel', { negotiated: true });
          dataChannel.onerror = (error) => console.log(error);
          dataChannel.onmessage = (message) => console.log('Received message: ' + message.data);
          dataChannel.onopen = () => dataChannel.send('Hello, WebRTC!');
          dataChannel.onclose = () => console.log('Data channel is closed');
 
          // 设置本地视频流跟踪跟踪事件
          peerConnection.ontrack = (event) => {
            this.$refs.remoteVideo.srcObject = event.streams[0];
          };
 
          // 创建并发起offer
          peerConnection.createOffer().then(offer => {
            peerConnection.setLocalDescription(offer);
          }).catch(error => console.error(error));
 
          // 监听IceCandidate事件来管理ICE候选
          peerConnection.onicecandidate = (event) => {
            if (event.candidate) {
              // 发送candidate给对方
            }
          };
 
          // 监听signalingState变化
          peerConnection.onsignalingstatechange = () => {
            console.log(`Signaling state changed to: ${peerConnection.signalingState}`);
          };
 
          // 监听iceConnectionState变化
          peerConnection.oniceconnectionstatechange = () => {
            console.log(`ICE connection state changed to: ${peerConnection.iceConnectionState}`);
          };
 
          // 监听iceGatheringState变化
          peerConnection.onicegatheringstatechange = () => {
            console.log(`ICE gathering state changed to: ${peerConnection.iceGatheringState}`);
          };
        })
        .catch(error => console.error(error));
    }
  }
}
</script>

这个简化的代码实例展示了如何在Vue组件中使用WebRTC API来建立一个基本的视频通话。它首先获取本地视频流，然后初始化一个RTCPeerConnection，并通过这个连接发送视频流。同时，它还创建了