PeerJS 不返回远程流

如何解决PeerJS 不返回远程流

我用 PeerJS 做 android webRTC。 在本地流显示、发送和接收呼叫响应方面一切正常。

但很少有成功的连接。 大多数结果在远程显示器上是空白的（两个用户）。 我没有从 logcat 收到任何错误，也没有收到连接成功的原因。 这就是为什么我不知道如何解决这个问题。

请给一些建议。

//Kotlin 活动//

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_call)

    first = true

    type = intent.getIntExtra("type",-1)
    qUID = intent.getStringExtra("qUID")

    setupWebView()
}

fun onPeerConnected() {
    isPeerConnected = true
    listenForConnId()
}

private fun setupWebView() {
    webView.webChromeClient = object: WebChromeClient() {
        override fun onPermissionRequest(request: PermissionRequest?) {
            request?.grant(request.resources)
        }

        override fun onConsoleMessage(message: ConsoleMessage): Boolean {
            Log.e("PeerJS","${message.message()} >> From line:" +
                    "${message.lineNumber()} /// ID:${message.sourceId()}")
            return true
        }
    }

    webView.settings.javaScriptEnabled = true
    webView.settings.mediaPlaybackRequiresUserGesture = false
    webView.addJavascriptInterface(JavascriptInterface(this),"Android")

    loadVideoCall()
}

private fun loadVideoCall() {
    val filePath = "file:android_asset/call.html"
    webView.loadUrl(filePath)

    webView.webViewClient = object: WebViewClient() {
        override fun onPageFinished(view: WebView?,url: String?) {
            if (first) {
                callJavascriptFunction("javascript:init(\"${cUID}\")")

                if (type == 1 && first) {
                    RDB.child("Users")
                        .child(qUID!!)
                        .child("incoming")
                        .setValue(cUID)
                }

                first = false
            }
        }
    }
}

private fun listenForConnId() {
    if (type == 0) {
            RDB.child("Users").child(cUID).child("incoming")
                .addValueEventListener(object : ValueEventListener {
                    override fun onCancelled(error: DatabaseError) {}
                    override fun onDataChange(snapshot: DataSnapshot) {
                        if (snapshot.value != null && isPeerConnected) {
                            callJavascriptFunction("javascript:startCall(\"${snapshot.value.toString()}\")")
                        } else {
                            finish()
                        }
                    }
                })
    }
    if (type == 1) {
        RDB.child("Users").child(qUID!!).child("incoming")
            .addValueEventListener(object : ValueEventListener {
                override fun onCancelled(error: DatabaseError) {}
                override fun onDataChange(snapshot: DataSnapshot) {
                    if (snapshot.value != null && isPeerConnected) {
                        callJavascriptFunction("javascript:listen()")
                    }
                    if (snapshot.value == null) {
                        finish()
                    }
                }
            })
    }
}

private fun callJavascriptFunction(functionString: String) {
    webView.post { webView.evaluateJavascript(functionString,null) }
}

//javascript call.js//

let localVideo = document.getElementById("local-video")
let remoteVideo = document.getElementById("remote-video")

localVideo.style.opacity = 0
remoteVideo.style.opacity = 0

localVideo.onplaying = () => { localVideo.style.opacity = 1 }
remoteVideo.onplaying = () => { remoteVideo.style.opacity = 1 }

let peer
function init(userId) {
//    peer = new Peer(userId) **<<<get same result with default method**

    peer = new Peer(userId,{ 'iceServers': [
            { 'urls': 'stun:stun.l.google.com:19302' },{ url: 'turn:[e-mail]:80',credential: 'homeo' },{
                url: 'turn:numb.viagenie.ca',credential: 'muazkh',username: '[e-mail]'
            },{
                url: 'turn:192.158.29.39:3478?transport=udp',credential: 'JZEOEt2V3Qb0y27GRntt2u2PAYA=',username: '28224511:1379330808'
            },{
                url: 'turn:192.158.29.39:3478?transport=tcp',{
                url: 'turn:turn.bistri.com:80',credential: 'homeo',username: 'homeo'
            },{
                url: 'turn:turn.anyfirewall.com:443?transport=tcp',credential: 'webrtc',username: 'webrtc'
            }
        ],'sdpSemantics': 'unified-plan'
    })

    peer.on('open',() => {
        Android.onPeerConnected()

        navigator.getUserMedia({
            audio: true,video: true
        },(stream) => {
            localVideo.srcObject = stream
            localStream = stream
            localVideo.className = "secondary-video"
        },(err) => {
            console.error('PeerJS > Failed : peer.on open > navigator.getUserMedia',err);
        })

    },(err) => {
        console.error('PeerJS > Failed : peer.on open',err);
    })

    peer.on('error',function(err) {
        console.error('PeerJS > error : function(err)',err);
    });
}

let localStream
function listen() {
    peer.on('call',(call) => {

        navigator.getUserMedia({
            audio: true,(stream) => {
            localVideo.srcObject = stream
            localStream = stream

            call.answer(stream)
            call.on('stream',(remoteStream) => {
                remoteVideo.srcObject = remoteStream

                remoteVideo.className = "primary-video"
                localVideo.className = "secondary-video"

            },(err) => {
                console.error('PeerJS > Failed : peer.on call > call.on stream',err);
            })

        },(err) => {
            console.error('PeerJS > Failed : peer.on call > navigator.getUserMedia',(err) => {
        console.error('PeerJS > Failed : peer.on call',err);
    })
}

function startCall(otherUserId) {
    navigator.getUserMedia({
        audio: true,video: true
    },(stream) => {

        localVideo.srcObject = stream
        localStream = stream

        const call = peer.call(otherUserId,stream)
        call.on('stream',(remoteStream) => {
            remoteVideo.srcObject = remoteStream

            remoteVideo.className = "primary-video"
            localVideo.className = "secondary-video"

        },(err) => {
            console.error('PeerJS > Failed : startCall > navigator.getUserMedia > call.on stream',(err) => {
        console.error('PeerJS > Failed : startCall > navigator.getUserMedia',err);
    })
}

function toggleVideo(b) {
    if (b == "true") {
        localStream.getVideoTracks()[0].enabled = true
    } else {
        localStream.getVideoTracks()[0].enabled = false
    }
} 

function toggleAudio(b) {
    if (b == "true") {
        localStream.getAudioTracks()[0].enabled = true
    } else {
        localStream.getAudioTracks()[0].enabled = false
    }
}

function getUserID() {
    return peer.id
}

function disconnect() {
    peer.disconnect()
    peer.destroy()
}