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<h1 class="page-title">Source: webrtcstreamer.js</h1>
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<pre class="prettyprint source linenums"><code>
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/**
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* Interface with WebRTC-streamer API
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* @constructor
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* @param {string} videoElement - id of the video element tag
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* @param {string} srvurl - url of webrtc-streamer (default is current location)
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*/
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function WebRtcStreamer (videoElement, srvurl) {
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this.videoElement = videoElement;
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this.srvurl = srvurl || location.protocol+"//"+window.location.hostname+":"+window.location.port;
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this.pc = null;
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this.pcOptions = { "optional": [{"DtlsSrtpKeyAgreement": true} ] };
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this.mediaConstraints = { offerToReceiveAudio: true, offerToReceiveVideo: true };
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this.iceServers = null;
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this.earlyCandidates = [];
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}
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/**
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* Connect a WebRTC Stream to videoElement
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* @param {string} videourl - id of WebRTC video stream
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* @param {string} audiourl - id of WebRTC audio stream
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* @param {string} options - options of WebRTC call
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* @param {string} stream - local stream to send
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*/
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WebRtcStreamer.prototype.connect = function(videourl, audiourl, options, localstream) {
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this.disconnect();
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// getIceServers is not already received
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if (!this.iceServers) {
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console.log("Get IceServers");
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var bind = this;
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request("GET" , this.srvurl + "/api/getIceServers")
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.done( function (response) {
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if (response.statusCode === 200) {
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bind.onReceiveGetIceServers.call(bind,JSON.parse(response.body), videourl, audiourl, options, localstream);
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}
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else {
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bind.onError(response.statusCode);
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}
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}
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);
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} else {
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this.onReceiveGetIceServers(this.iceServers, videourl, audiourl, options, localstream);
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}
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}
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/**
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* Disconnect a WebRTC Stream and clear videoElement source
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*/
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WebRtcStreamer.prototype.disconnect = function() {
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var videoElement = document.getElementById(this.videoElement);
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if (videoElement) {
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videoElement.src = "";
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}
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if (this.pc) {
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request("GET" , this.srvurl + "/api/hangup?peerid="+this.pc.peerid);
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try {
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this.pc.close();
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}
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catch (e) {
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console.log ("Failure close peer connection:" + e);
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}
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this.pc = null;
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}
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}
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/*
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* GetIceServers callback
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*/
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WebRtcStreamer.prototype.onReceiveGetIceServers = function(iceServers, videourl, audiourl, options, stream) {
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this.iceServers = iceServers;
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this.pcConfig = iceServers || {"iceServers": [] };
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try {
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this.pc = this.createPeerConnection();
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var peerid = Math.random();
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this.pc.peerid = peerid;
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var callurl = this.srvurl + "/api/call?peerid="+ peerid+"&url="+encodeURIComponent(videourl);
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if (audiourl) {
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callurl += "&audiourl="+encodeURIComponent(audiourl);
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}
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if (options) {
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callurl += "&options="+encodeURIComponent(options);
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}
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if (stream) {
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this.pc.addStream(stream);
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}
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// clear early candidates
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this.earlyCandidates.length = 0;
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// create Offer
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var bind = this;
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this.pc.createOffer(this.mediaConstraints).then(function(sessionDescription) {
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console.log("Create offer:" + JSON.stringify(sessionDescription));
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bind.pc.setLocalDescription(sessionDescription
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, function() {
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request("POST" , callurl, { body: JSON.stringify(sessionDescription) })
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.done( function (response) {
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if (response.statusCode === 200) {
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bind.onReceiveCall.call(bind,JSON.parse(response.body));
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}
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else {
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bind.onError(response.statusCode);
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}
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}
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);
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}
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, function() {} );
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}, function(error) {
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alert("Create offer error:" + JSON.stringify(error));
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});
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} catch (e) {
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this.disconnect();
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alert("connect error: " + e);
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}
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}
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/*
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* create RTCPeerConnection
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*/
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WebRtcStreamer.prototype.createPeerConnection = function() {
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console.log("createPeerConnection config: " + JSON.stringify(this.pcConfig) + " option:"+ JSON.stringify(this.pcOptions));
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var pc = new RTCPeerConnection(this.pcConfig, this.pcOptions);
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var streamer = this;
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pc.onicecandidate = function(evt) { streamer.onIceCandidate.call(streamer, evt); };
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pc.onaddstream = function(evt) { streamer.onAddStream.call(streamer,evt); };
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pc.oniceconnectionstatechange = function(evt) {
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console.log("oniceconnectionstatechange state: " + pc.iceConnectionState);
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var videoElement = document.getElementById(streamer.videoElement);
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if (videoElement) {
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if (pc.iceConnectionState === "connected") {
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videoElement.style.opacity = "1.0";
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}
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else if (pc.iceConnectionState === "disconnected") {
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videoElement.style.opacity = "0.25";
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}
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else if ( (pc.iceConnectionState === "failed") || (pc.iceConnectionState === "closed") ) {
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videoElement.style.opacity = "0.5";
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}
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}
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}
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pc.ondatachannel = function(evt) {
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console.log("remote datachannel created:"+JSON.stringify(evt));
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evt.channel.onopen = function () {
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console.log("remote datachannel open");
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this.send("remote channel openned");
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}
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evt.channel.onmessage = function (event) {
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console.log("remote datachannel recv:"+JSON.stringify(event.data));
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}
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}
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try {
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var dataChannel = pc.createDataChannel("ClientDataChannel");
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dataChannel.onopen = function() {
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console.log("local datachannel open");
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this.send("local channel openned");
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}
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dataChannel.onmessage = function(evt) {
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console.log("local datachannel recv:"+JSON.stringify(evt.data));
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}
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} catch (e) {
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console.log("Cannor create datachannel error: " + e);
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}
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console.log("Created RTCPeerConnnection with config: " + JSON.stringify(this.pcConfig) + "option:"+ JSON.stringify(this.pcOptions) );
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return pc;
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}
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/*
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* RTCPeerConnection IceCandidate callback
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*/
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WebRtcStreamer.prototype.onIceCandidate = function (event) {
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if (event.candidate) {
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if (this.pc.currentRemoteDescription) {
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var bind = this;
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request("POST" , this.srvurl + "/api/addIceCandidate?peerid="+this.pc.peerid, { body: JSON.stringify(event.candidate) })
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.done( function (response) {
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if (response.statusCode === 200) {
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console.log("addIceCandidate ok:" + response.body);
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}
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else {
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bind.onError(response.statusCode);
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}
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}
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);
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} else {
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this.earlyCandidates.push(event.candidate);
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}
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}
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else {
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console.log("End of candidates.");
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}
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}
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/*
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* RTCPeerConnection AddTrack callback
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*/
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WebRtcStreamer.prototype.onAddStream = function(event) {
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console.log("Remote track added:" + JSON.stringify(event));
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var videoElement = document.getElementById(this.videoElement);
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videoElement.srcObject = event.stream;
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videoElement.setAttribute("playsinline", true);
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videoElement.play();
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}
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/*
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* AJAX /call callback
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*/
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WebRtcStreamer.prototype.onReceiveCall = function(dataJson) {
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var bind = this;
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console.log("offer: " + JSON.stringify(dataJson));
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this.pc.setRemoteDescription(new RTCSessionDescription(dataJson)
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, function() {
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console.log ("setRemoteDescription ok");
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while (bind.earlyCandidates.length) {
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var candidate = bind.earlyCandidates.shift();
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request("POST" , bind.srvurl + "/api/addIceCandidate?peerid=" + bind.pc.peerid, { body: JSON.stringify(candidate) })
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.done( function (response) {
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if (response.statusCode === 200) {
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console.log("addIceCandidate ok:" + response.body);
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}
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else {
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bind.onError(response.statusCode);
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}
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}
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);
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}
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request("GET" , bind.srvurl + "/api/getIceCandidate?peerid=" + bind.pc.peerid)
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.done( function (response) {
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if (response.statusCode === 200) {
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bind.onReceiveCandidate.call(bind,JSON.parse(response.body));
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}
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else {
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bind.onError(response.statusCode);
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}
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}
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);
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}
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, function(error) { console.log ("setRemoteDescription error:" + JSON.stringify(error)); });
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}
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/*
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* AJAX /getIceCandidate callback
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*/
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WebRtcStreamer.prototype.onReceiveCandidate = function(dataJson) {
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console.log("candidate: " + JSON.stringify(dataJson));
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if (dataJson) {
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for (var i=0; i<dataJson.length; i++) {
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var candidate = new RTCIceCandidate(dataJson[i]);
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console.log("Adding ICE candidate :" + JSON.stringify(candidate) );
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this.pc.addIceCandidate(candidate
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, function() { console.log ("addIceCandidate OK"); }
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, function(error) { console.log ("addIceCandidate error:" + JSON.stringify(error)); } );
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}
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this.pc.addIceCandidate();
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}
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}
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/*
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* AJAX callback for Error
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*/
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WebRtcStreamer.prototype.onError = function(status) {
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console.log("onError:" + status);
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}</code></pre>
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</article>
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</section>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="JanusVideoRoom.html">JanusVideoRoom</a></li><li><a href="WebRtcStreamer.html">WebRtcStreamer</a></li><li><a href="XMPPVideoRoom.html">XMPPVideoRoom</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.4.3</a> on Sat Aug 25 2018 15:00:27 GMT+0200 (CEST)
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