Now use webrtc, found that the connection is established, can't correct to send and receive audio and video data, the code is as follows:

 
"Use strict"; 
//UserMedia configure 
Var mediaConstraints={
Audio: true,//We want an audio track 
Video: true 
}; 

Var offerConstraints={
OfferToReceiveAudio: 1, 
OfferToReceiveVideo: 1, 
VoiceActivityDetection: false 
}; 

Var myPeerConnection=null;//RTCPeerConnection 
Var localStream=null; 
Var webStream=null; 
Var testsdp=null; 
Var dataChannel=null; 

//real send function 
The function the send (MSG) {
Var msgJSON=JSON. Stringify (MSG); 
MySend ({
Address: the document. The getElementById (' name '). The value 
}, msgJSON, (err)=& gt; {
If (err) {
console.log(err); 
} 
}); 
} 

The function sendToServer (MSG) {
The console. The log (" send MSG "); 
The console. The log (MSG); 
Var msgJSON=JSON. Stringify (MSG); 
Send (msgJSON); 
} 

The function handleNewICECandidateMsg (MSG) {
Try {
Var candidate=new RTCIceCandidate (MSG) candidate); 
The console. The log (" * * * Adding received ICE candidate: "+ JSON. The stringify (candidate)); 

if (! MyPeerConnection) {createPeerConnection (); } 
MyPeerConnection. AddIceCandidate (candidate) 
{} the catch (err) 
ReportError (err); 
} 
} 

//called when the receive MSG 
The function onMessage (res) {
Var MSG=JSON. Parse (JSON parse (res) data)); 
The console. The log (" Message received: "+ MSG. Type); 
The console. The log (MSG); 

The switch (MSG) type) {
Case "video - offer" ://Invitation and offer to chat 
HandleVideoOfferMsg (MSG); 
break; 

Case "video - the answer:"//the Callee has opportunities our offer 
HandleVideoAnswerMsg (MSG); 
break; 

Case "hang - up" ://The other peer has hung up The call 
HandleHangUpMsg (MSG); 
break; 

Case "of" new - ice - candidate: 
HandleNewICECandidateMsg (MSG); 
break; 

Default: 
Log_error (" Unknown message received: "); 
The console. The log (MSG); 
} 
}; 
//called when RTCPeerConnection. AddStream was called 
The function handleAddStream (event) {
The console. The log (" * * * handleAddStream "); 
console.log(event); 
WebStream=event. Streams [0] | | event. The stream; 
Document. The getElementById (" received_video "). SrcObject=webStream; 
Document. The getElementById (" received_video "). CrossOrigin='*'; 
Document. The getElementById (" hangup - button "). The disabled=false; 
} 

The function handleICECandidateEvent (event) {
If (event. Candidate) {
Console. The log (" * * * Outgoing ICE candidate: "+ event. The candidate. The candidate). 

SendToServer ({
Type: "new - ice - candidate," 
Candidate: event. Candidate 
}); 
} 
} 

The function handleSignalStateChanged (event) {
The console. The log (" * * * * * handleSignalStateChanged * * * * * "); 
The console. The log (event) 
} 

//create a RTCPeerConnection 
The function createPeerConnection () {
The console. The log (" Setting up a connection... "); 

MyPeerConnection=new RTCPeerConnection ({" rtcpMuxPolicy ":" require "and" bundlePolicy ":" Max - bundle ", "iceServers" : []}); 
MyPeerConnection. Ontrack=handleAddStream; 
MyPeerConnection. Onicecandidate=handleICECandidateEvent 
MyPeerConnection. Onsignalingstatechange=handleSignalStateChanged; 
} 
//close the Video call chat 
The function closeVideoCall () {
Var localVideo=document. GetElementById (" local_video "); 


The console. The log (" Closing the call "); 

//Close the RTCPeerConnection 

If (myPeerConnection) {
The console. The log (" -- -- & gt; Closing the peer connection "); 

If (localVideo. SrcObject) {
LocalVideo. Pause (); 
LocalVideo. SrcObject. GetTracks (). The forEach (track=& gt; {
Track. Stop (); 
}); 
} 

//Close the peer connection 

MyPeerConnection. Close (); 
//dataChannel. Close (); 
//dataChannel=null; 
MyPeerConnection=null; 
} 
Document. The getElementById (" hangup - button "). The disabled=true; 
} 
//deal with the hangup MSG 
The function handleHangUpMsg (MSG) {
The console. The log (" * * * a Received hang up notification from other peer "); 

CloseVideoCall (); 
} 
//the click event 
The function hangUpCall () {
CloseVideoCall (); 

SendToServer ({
Type: "hang - up" 
}); 
} 

The function sendMsg () {
//dataChannel. Send (" hello, world "); 
} 

//the click event to start a video call chat 
The function the invite () {
The console. The log (" Starting to prepare an invitation "); 
If (myPeerConnection) {
The console. The log (" You can 't start a call because You already have one open!" ); 
} else {
CreatePeerConnection (); 
The navigator. MediaDevices. GetUserMedia (mediaConstraints). Then (function (stream) {
LocalStream=stream; 
The console. The log (' localStream '); 
The console. The log (localStream); 
//Adding a local stream won 't trigger the onaddstream callback 
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