在Opera浏览器上没有调用webrtc onicecandidate。

Question

我有一个问题，我的onicecandidate事件在Opera浏览器中没有被触发，以下是我的代码。

我尝试了getUserMedia以不同的方式（通过addStream和addTrack）添加流到RTCPeerConnection，设置offerToReceiveAudio和offerToReceiveVideo，这些都没有用。

代码

const RTCPeerConnection =  window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
const RTCSessionDescription = window.RTCSessionDescription || window.mozRTCSessionDescription || window.RTCSessionDescription;
const RTCIceCandidate = window.mozRTCIceCandidate || window.RTCIceCandidate;

const mediaConstraints = {
    offerToReceiveAudio: true,
    offerToReceiveVideo: false
}

const options = {
    iceServers: [
        {
          urls: 'turn:74.11.232.11:3478',
          credential: 'password',
          username: 'username'
        }
    ],
};

function getUserMedia(callback) {
    navigator.mediaDevices.getUserMedia({
        audio: true,
        video: false
    }).then(callback);
}

getUserMedia((stream) => {
     localStream = stream

     localStream.getAudioTracks()[0].enabled = false

     WebRtcPeerConnection = new RTCPeerConnection(options)

     WebRtcPeerConnection.addStream(stream)

     WebRtcPeerConnection.createOffer(mediaConstraints).then((offer) => {
         console.log(offer.sdp)
         WebRtcPeerConnection.setLocalDescription(offer);
         WebRtcPeerConnection.onicecandidate = onRoomIceCandidate
         onRoomOffer(null, offer)
     });
})

Answer 1

我的错误是声明了常量RTCPeerConnection，因为我知道在Opera浏览器中RTCPeerConnection是一个全局类(它不在window.RTCPeerConnection等中)，我需要替换这一行。

const RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;

对此

const RTCPeerConnection = RTCPeerConnection || window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;