1<!DOCTYPE html> 2<html> 3<head><title>Loopback test</title></head> 4<body> 5 <video id="remoteVideo" width="1280" height="720" autoplay muted></video> 6<script> 7var localStream, localPeerConnection, remotePeerConnection; 8var remoteVideo = document.getElementById("remoteVideo"); 9 10function start() { 11 navigator.getUserMedia = navigator.getUserMedia || 12 navigator.webkitGetUserMedia; 13 navigator.getUserMedia( 14 { 15 audio:false, 16 video:{ 17 "mandatory": { 18 "minWidth": "1280", 19 "minHeight": "720", 20 } 21 } 22 }, 23 gotLocalStream, 24 gotError); 25} 26 27function gotLocalStream(stream) { 28 localStream = stream; 29 var servers = null; 30 31 localPeerConnection = new webkitRTCPeerConnection(servers); 32 localPeerConnection.onicecandidate = gotLocalIceCandidate; 33 34 remotePeerConnection = new webkitRTCPeerConnection(servers); 35 remotePeerConnection.onicecandidate = gotRemoteIceCandidate; 36 remotePeerConnection.onaddstream = gotRemoteStream; 37 38 localPeerConnection.addStream(localStream); 39 localPeerConnection.createOffer(gotLocalDescription, function(error) {}); 40} 41 42function gotError(error) { 43 console.log("navigator.getUserMedia error: ", error); 44} 45 46function gotRemoteStream(event) { 47 remoteVideo.srcObject = event.stream; 48} 49 50function gotLocalDescription(description) { 51 localPeerConnection.setLocalDescription(description); 52 remotePeerConnection.setRemoteDescription(description); 53 remotePeerConnection.createAnswer(gotRemoteDescription, function(error) {}); 54} 55 56function gotRemoteDescription(description) { 57 remotePeerConnection.setLocalDescription(description); 58 localPeerConnection.setRemoteDescription(description); 59} 60 61function gotLocalIceCandidate(event) { 62 if (event.candidate) 63 remotePeerConnection.addIceCandidate(new RTCIceCandidate(event.candidate)); 64} 65 66function gotRemoteIceCandidate(event) { 67 if (event.candidate) 68 localPeerConnection.addIceCandidate(new RTCIceCandidate(event.candidate)); 69} 70 71window.onload=start; 72</script> 73</body> 74</html> 75