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<!DOCTYPE html>
<html>
<head>
<title>WebRTC Reference App</title>
<meta http-equiv="X-UA-Compatible" content="chrome=1"/>
<link rel="canonical" href="https://apprtc.appspot.com/?r=96443121"/>
<link rel="stylesheet" href="css/main.css" />
<script type="text/javascript" src="_ah/channel/jsapi.js"></script>
<!--<script type="text/javascript" src="/_ah/channel/jsapi"></script>-->
<script src="js/main.js"></script>
<!-- Load the polyfill to switch-hit between Chrome and Firefox -->
<script src="js/adapter.js"></script>
</head>
<body >
<script type="text/javascript">
var errorMessages = [];
var channelToken = 'AHRlWroGHj6YqWMdr7JeFULjqux9vQzrpCOnFM7zD91GLHc4PVW1WDZJI08ptgM_XMj5M22InerI5Lw5QN1rS3rHu2Dlnx3g95ILmzupe2OFB4OLCbZGbAQ';
var me = '49847744';
var roomKey = '96443121';
var roomLink = 'https://apprtc.appspot.com/?r=96443121';
var initiator = 0;
var pcConfig = {"iceServers": [{"url": "stun:stun.l.google.com:19302"}]};
var pcConstraints = {"optional": [{"DtlsSrtpKeyAgreement": true}]};
var offerConstraints = {"optional": [], "mandatory": {}};
var mediaConstraints = {"audio": true, "video": true};
var turnUrl = 'https://computeengineondemand.appspot.com/turn?username=49847744&key=4080218913';
var stereo = false;
var audio_send_codec = '';
var audio_receive_codec = 'opus/48000';
setTimeout(initialize, 1);
</script>`enter code here`
<div id="maindiv">
<div id="container" ondblclick="enterFullScreen()">
<div id="card">
<div id="local">
<video id="localVideo" autoplay muted="true"/>
</div>
<div id="remote">
<video id="remoteVideo" autoplay>
</video>
<div id="mini">
<video id="miniVideo" autoplay muted="true"/>
</div>
</div>
</div>
</div>
<div class="buttons">
<button id="startButton">Start</button>
<button id="callButton">Call</button>
<button id="hangupButton">Hang Up</button>
</div>
</div>
<script>
var localStream, localPeerConnection, remotePeerConnection;
var localVideo = document.getElementById("localVideo");
var remoteVideo = document.getElementById("remoteVideo");
var startButton = document.getElementById("startButton");
var callButton = document.getElementById("callButton");
var hangupButton = document.getElementById("hangupButton");
startButton.disabled = false;
callButton.disabled = true;
hangupButton.disabled = true;
startButton.onclick = start;
callButton.onclick = call;
hangupButton.onclick = hangup;
function trace(text) {
console.log((performance.now() / 1000).toFixed(3) + ": " + text);
}
function gotStream(stream){
trace("Received local stream");
localVideo.src = URL.createObjectURL(stream);
localStream = stream;
callButton.disabled = false;
}
function start() {
trace("Requesting local stream");
startButton.disabled = true;
navigator.getUserMedia = navigator.getUserMedia ||
navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
navigator.getUserMedia({audio:true, video:true}, gotStream,
function(error) {
trace("navigator.getUserMedia error: ", error);
});
}
function call() {
callButton.disabled = true;
hangupButton.disabled = false;
trace("Starting call");
if (localStream.getVideoTracks().length > 0) {
trace('Using video device: ' + localStream.getVideoTracks()[0].label);
}
if (localStream.getAudioTracks().length > 0) {
trace('Using audio device: ' + localStream.getAudioTracks()[0].label);
}
var servers = null;
localPeerConnection = new webkitRTCPeerConnection(servers);
trace("Created local peer connection object localPeerConnection");
localPeerConnection.onicecandidate = gotLocalIceCandidate;
remotePeerConnection = new webkitRTCPeerConnection(servers);
trace("Created remote peer connection object remotePeerConnection");
remotePeerConnection.onicecandidate = gotRemoteIceCandidate;
remotePeerConnection.onaddstream = gotRemoteStream;
localPeerConnection.addStream(localStream);
trace("Added localStream to localPeerConnection");
localPeerConnection.createOffer(gotLocalDescription);
}
function gotLocalDescription(description){
localPeerConnection.setLocalDescription(description);
trace("Offer from localPeerConnection: \n" + description.sdp);
remotePeerConnection.setRemoteDescription(description);
remotePeerConnection.createAnswer(gotRemoteDescription);
}
function gotRemoteDescription(description){
remotePeerConnection.setLocalDescription(description);
trace("Answer from remotePeerConnection: \n" + description.sdp);
localPeerConnection.setRemoteDescription(description);
}
function hangup() {
trace("Ending call");
localPeerConnection.close();
remotePeerConnection.close();
localPeerConnection = null;
remotePeerConnection = null;
hangupButton.disabled = true;
callButton.disabled = false;
}
function gotRemoteStream(event){
remoteVideo.src = URL.createObjectURL(event.stream);
trace("Received remote stream");
}
function gotLocalIceCandidate(event){
if (event.candidate) {
remotePeerConnection.addIceCandidate(new RTCIceCandidate(event.candidate));
trace("Local ICE candidate: \n" + event.candidate.candidate);
}
}
function gotRemoteIceCandidate(event){
if (event.candidate) {
localPeerConnection.addIceCandidate(new RTCIceCandidate(event.candidate));
trace("Remote ICE candidate: \n " + event.candidate.candidate);
}
}
</script>
</body>
<footer id="status">`enter code here`
</footer>
<div id="infoDiv"></div>
</html>
最佳答案
您将需要一个信令服务器来中继两个对等点之间的所有消息。例如,您可以使用 node.js 在 Javascript 中执行此操作:
var WebSocketServer = require('websocket').server;
var http = require('http');
var clients = [];
var server = http.createServer(function(request, response) {
// process HTTP request. Since we're writing just WebSockets server
// we don't have to implement anything.
});
server.listen(80, function() {
console.log((new Date()) + " Server is listening on port 80");
});
// create the server
wsServer = new WebSocketServer({
httpServer: server
});
function sendCallback(err) {
if (err) console.error("send() error: " + err);
}
// This callback function is called every time someone
// tries to connect to the WebSocket server
wsServer.on('request', function(request) {
console.log((new Date()) + ' Connection from origin ' + request.origin + '.');
var connection = request.accept(null, request.origin);
console.log(' Connection ' + connection.remoteAddress);
clients.push(connection);
// This is the most important callback for us, we'll handle
// all messages from users here.
connection.on('message', function(message) {
if (message.type === 'utf8') {
// process WebSocket message
console.log((new Date()) + ' Received Message ' + message.utf8Data);
// broadcast message to all connected clients
clients.forEach(function (outputConnection) {
if (outputConnection != connection) {
outputConnection.send(message.utf8Data, sendCallback);
}
});
}
});
connection.on('close', function(connection) {
// close user connection
console.log((new Date()) + " Peer disconnected.");
});
});
function connect() {
if (!started && localStream && channelReady) {
createPeerConnection();
started = true;
peerConn.createOffer(setLocalAndSendMessage, errorCallback, mediaConstraints);
} else {
alert("Local stream may not be running yet, or problem with signaling");
}
}
// send SDP via websocket connection
function setLocalAndSendMessage(sessionDescription) {
peerConn.setLocalDescription(sessionDescription);
socket.send(JSON.stringify(sessionDescription));
}
// Signaling messages end up here
function onMessage(evt) {
var descr = JSON.parse(evt.data);
if (descr.type === 'offer') {
if (!started) {
createPeerConnection();
started = true;
}
peerConn.setRemoteDescription(new RTCSessionDescription(descr));
peerConn.createAnswer(setLocalAndSendMessage, errorCallback, mediaConstraints);
} else if (descr.type === 'answer'){
peerConn.setRemoteDescription(new RTCSessionDescription(descr));
} else if (descr.type === 'candidate'){
var candidate = new RTCIceCandidate({sdpMLineIndex: descr.sdpMLineIndex, sdpMid: descr.sdpMid, candidate: descr.candidate});
peerConn.addIceCandidate(candidate);
}
}
//Creates a new RTCPeerConnection
function createPeerConnection() {
peerConn = new webkitRTCPeerConnection({"iceServers": []});
// send any ice candidates to the other peer
peerConn.onicecandidate = function(evt) {
if (event.candidate) {
socket.send(JSON.stringify({
type: "candidate",
sdpMLineIndex: evt.candidate.sdpMLineIndex,
sdpMid: evt.candidate.sdpMid,
candidate: evt.candidate.candidate}));
} else {
console.log("End of candidates.");
}
};
peerConn.addStream(localStream);
peerConn.addEventListener("addstream", onRemoteStreamAdded, false);
}
function onRemoteStreamAdded(event) {
//peerConn.removeEventListener("addstream", onRemoteStreamAdded, false);
remotevidArr.src = window.URL.createObjectURL(event.stream);
}
关于webrtc - (WebRTC) 如何连接两台电脑进行视频聊天?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19927715/
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