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demo.html
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<!DOCTYPE html>
<html>
<head>
<!--手机和电脑连接的情况下的布局设计-->
<meta content="text/html ;chaset=utf-8" http-equiv="content-type">
<title>WebRTC-Demo</title>
<link rel="shortcut icon" type="image/x-icon" href="/favicon.ico"/>
<style>
video.tempwindow{
width:700pt;
height:930pt;
border:1px solid dodgerblue;
box-shadow:0px 3px 6px 1px skyblue;
}
video.yourwindow{
width:720pt;
height:100%;
border:1px solid dodgerblue;
box-shadow:0px 3px 6px 1px skyblue;
left:355pt;
}
video.ownwindow{
width:180pt;
top:298px;
right: 10px;
position: fixed;
}
textarea{
width : 320px;
height : 240px;
border : 1px solid dodgerblue;
box-shadow : 0px 3px 6px 1px skyblue;
}
p.title {
font-size:27px;
}
p.tag {
font-size:50px;
}
button{
font-size:40px;
}
</style>
</head>
<body>
<script></script>
<script src="extra/adapter.js" type="text/javascript"></script>
<script src="clientXHRSignalingChannel.js" type="text/javascript"></script>
<!--<script src="https://webrtc.github.io/adapter/adapter.js"
type = "text/javascript"></script>-->
<script>
var signalingChannel,key,id,
haveLocalMedia = false,
weWaited = false,
myVideoStream,myVideo,tempVideo,
yourVideoStream,yourVideo,
doNothing = function(){},
pc, dc , data={},
constraints = {mandatory:{
OfferToReceiveAudio : true,
OfferToReceiveVideo : true
}};
var videoconstraints = {
audio: true,
video: true
};
//below is main function
window.onload = function(){
if(queryparams && queryparams['key']){
document.getElementById("key").value = queryparams['key'];
connect();
}
myVideo = document.getElementById("myVideo");
tempVideo = document.getElementById("tempVideo");
yourVideo = document.getElementById("yourVideo");
getMedia();
}//end onload function
//now will create signaling channel
function connect(){
var errorCB , scHandlers,handleMsg;
//console.log("connect");
//get key from Element key.value
key = document.getElementById("key").value;
//display message from signaling channel
handleMsg = function(msg){
//release message to screen
var msgE = document.getElementById("inmessages");
var msgString = JSON.stringify(msg);
msgE.value = msgString + "\n" +msgE.value;
if(msg.type=== "offer"){
pc.setRemoteDescription(new RTCSessionDescription(msg));
answer();
}else if(msg.type === "answer"){
pc.setRemoteDescription(new RTCSessionDescription(msg));
}else if(msg.type === "candidate"){
pc.addIceCandidate(
new RTCIceCandidate({sdpMLineIndex:msg.mlineindex,
candidate:msg.candidate}));
}
};
//signaling channel handle function
scHandlers = {
'onWaiting' : function(){
setStatus("Waiting");
weWaited = true;
},
'onConnected': function(){
setStatus("Connected");
//wait for ready of local media
createPC();
},
'onMessage' : handleMsg
};
//finally, create signaling channel
signalingChannel = createSignalingChannel(key,scHandlers);
errorCB = function(msg){
document.getElementById("response").innerHTML = msg;
};
//connect to serverXHRSignalingChannel
//console.log("signaling channel connect",typeof(signalingChannel));
signalingChannel.connect(errorCB);
}//end connect function
function send(msg){
var handler = function(res){
document.getElementById("response").innerHTML=res;
return;
},
msg=msg||document.getElementById("message").value,
//release to screen
msgE=document.getElementById("outmessages");
var msgString = JSON.stringify(msg).replace(/\\r\\n/g,'\n');
msgE.value = msgString +"\n" +msgE.value;
//send message by signaling channel
signalingChannel.send(msg,handler);
}//end send function
//abtain local Media
function getMedia(){
navigator.mediaDevices.getUserMedia(videoconstraints)
.then(gotUserMedia)
.catch(didntGetUserMedia);
}
function gotUserMedia(stream){
myVideoStream = stream;
haveLocalMedia=true;
myVideo.srcObject=myVideoStream;
tempVideo.srcObject=myVideoStream;
attachMediaIfReady();
}
function didntGetUserMedia(){
console.log("Couldn't get video");
}
//set up RTC peer connect
function createPC(){
var stunuri = true,
turnuri = false,
myfalse = function(v){
return ((v==="0"||(v==="false")||(!v)));
},
config = new Array();
if(queryparams){
if('stunuri'in queryparams){
stunuri = !myfalse(queryparams['stunuri']);
}
if('turnuri' in queryparams){
turnuri = !myfalse(queryparams['turnuri']);
};
};
if(stunuri){
//this server is google public stun server
config.push({"url":"stun:stun.l.google.com:19302"});
}
if(turnuri){
if(stunuri){
config.push({"url":"turn:user@turn.webrtcbook.com",
"credential":"test"});
}else{
config.push({"url":"turn:user@turn-only.webrtcbook.com",
"credential":"test"});
}
}
console.log("config = "+JSON.stringify(config));
pc = new RTCPeerConnection({iceServers:config});
pc.onicecandidate = onIceCandidate;
pc.onaddstream = onRemoteStreamAdded;
pc.onremovestream = onRemoteStreamRemoved;
pc.ondatachannel = onDataChannelAdded;
attachMediaIfReady();
}//end createPC
function onIceCandidate(e){
if(e.candidate){
send({"type":'candidate',
mlineindex : e.candidate.sdpMLineIndex,
candidate : e.candidate.candidate});
}
}
function onRemoteStreamAdded(e){
yourVideoStream = e.stream;
yourVideo.srcObject=yourVideoStream;
setStatus("On call");
}
function onRemoteStreamRemoved(e){}
//if another bower add data channel
//this function will save data channel id an set handle function
function onDataChannelAdded(e){
dc = e.channel;
setupDataHandlers();
sendChat("hello");
}
//datachannel handle function
function setupDataHandlers(){
data.send=function(msg){
msg = JSON.stringify(msg);
console.log("sending "+msg + " over data channel");
dc.send(msg);
}
dc.onmessage = function(e){
var msg = JSON.parse(e.data),
cb = document.getElementById("chatbox"),
rtt = document.getElementById("rtt");
if(msg.rtt){
console.log("received rtt of '"+msg.rtt + "'");
rtt.value = msg.rtt;
msg = msg.rtt;
}else if (msg.chat){
console.log("received chat of '"+msg.chat + "'");
cb.value +="<- "+msg.chat +"\n";
rtt.value = "";
cb.scrollTop = cb.scrollHeight;
msg = msg.chat;
}else{
console.log("received "+msg +"on data channel");
}
};
}
function sendRtt(){
var msg = document.getElementById("chat").value;
data.send({'rtt':msg});
}
function sendChat(msg){
var cb = document.getElementById("chatbox"),
c = document.getElementById("chat");
msg = msg || c.value;
console.log("sendChat(" + msg + ")");
cb.value += "->" +msg + "\n";
data.send({'chat':msg});
c.value = '';
cb.scrollTop = cb.scrollHeight;
}
function attachMediaIfReady(){
if(pc && haveLocalMedia){attachMedia();};
}
//add local meida stream to peer connection
function attachMedia(){
pc.addStream(myVideoStream);
setStatus("Ready for call");
if(queryparams && queryparams['call'] && !weWaited){
call();
}
}
//create SDP for offer
function call(){
dc= pc.createDataChannel('chat');
setupDataHandlers();
pc.createOffer(gotDescription,doNothing,constraints);
}
//create SDP for answer
function answer(){
pc.createAnswer(gotDescription,doNothing,constraints);
}
//set Local Session Description and send it to peer brower
function gotDescription(localDesc){
pc.setLocalDescription(localDesc);
send(localDesc);
}
//display the message of signaling
function setStatus(str){
var statusLineE=document.getElementById("statusline"),
statusE = document.getElementById("status"),
sendE = document.getElementById("send"),
callE = document.getElementById("call");
connectE = document.getElementById("connect"),
scMessage = document.getElementById("scMessage");
switch(str){
case "Waiting":
statusLineE.style.display = "inline";
statusE.innerHTML =
"Waiting for peer signaling connection";
sendE.style.display="none";
connectE.style.display = "none";
break;
case "Connected":
statusLineE.style.display = "inline";
statusE.innerHTML =
"Peer signaling connected,Waiting for local Media";
// sendE.style.display="inline";
connectE.style.display="none";
// scMessage.style.display = "inline-block";
break;
case "Ready for call":
statusE.innerHTML = "Ready for call";
callE.style.display="inline";
break;
case "On call":
statusE.innerHTML = "On call";
callE.style.display = "none";
tempVideo.style.display = "none";
yourVideo.style.display = "inline";
myVideo.style.display = "inline";
break;
default:
}
}
</script>
<div id = "setup" align = "center";>
<p class = "title">WebRTC Demo (local media and signaling, peer connection and data channel)</p>
<p class = "tag">Key:
<input type = "text" name="key" value = "xuin" id = "key" style="font-size:40px; width: 100;"
onkeyup ="if(event.keyCode==13){
connect; return false;
}"/>
<button id = "connect" onclick="connect();" >Connect</button>
<button id="call" style="display : none;"
onclick="call()">Call</button>
<br>
<span id = "statusline" style="display:none; font-size:30px;">Status:
<span id = "status">Disconnected</span>
</span>
</p>
</div>
<div align = "center";>
<video class="tempwindow" id="tempVideo" autoplay = "autoplay" muted="false" />
</div>
<div>
<video class="yourwindow" id="yourVideo" autoplay="autoplay" style="display: none"/></div>
</div>
<div align = "center";>
<video class="ownwindow" id="myVideo" autoplay = "autoplay" muted="false" style="display: none"/>
</div>
<div id = "scMessage" style="float:right;display:none;display:none">
<p>Signaling channel message:
<input type="text" width="100%" name="message" id="message"
onkeyup="if(event.keyCode ==13){
send(); return false;
}"/>
<button id = "send" style = "display:none"
onclick="send()">Send</button>
</p>
<p>Response: <span id="response"></span></p>
</div>
<br />
<div style="display:none">
<p><b>Outgoing Message</b>
<br/>
<textarea id = "outmessages"></textarea>
</p>
</div>
<div style="width:30%;vertical-align:top;display:none">
<textarea id = "chatbox" rows="10" style = "width:100%"></textarea>
<p style="width:100%"><b>Real-time:</b>
<textarea id = "rtt" rows = "2" style="width:100%"></textarea>
</p>
<p style="width:100%"><b>Chat message:</b>
<input type="text" style="width:100%" name="chat" id="chat"
onkeyup="sendRtt();
if(event.keyCode == 13){
sendChat(); return false;
}"/>
</p>
</div>
<div style="width:30%;vertical-align:top;display:none">
<p><b>Incoming Message</b>
<br />
<textarea id="inmessages"></textarea>
</p>
</div>
</body>
</html>