-
Notifications
You must be signed in to change notification settings - Fork 4
/
client.js
81 lines (74 loc) · 2.45 KB
/
client.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
var pc = new RTCPeerConnection();
// register some listeners to help debugging
pc.addEventListener('icegatheringstatechange', function() {
console.warn(pc.iceGatheringState);
}, false);
pc.addEventListener('iceconnectionstatechange', function() {
console.warn(pc.iceConnectionState);
}, false);
pc.addEventListener('signalingstatechange', function() {
console.warn(pc.signalingState);
}, false);
// connect audio / video
pc.addEventListener('track', function(evt) {
console.log('incomming track')
console.log(evt);
if (evt.track.kind == 'video') {
document.getElementById('video').srcObject = evt.streams[0];
console.log('video elem added');
} else {
document.getElementById('audio').srcObject = evt.streams[0];
}
});
function negotiate() {
return pc.createOffer({offerToReceiveVideo: true, offerToReceiveAudio: false}).then(function(offer) {
return pc.setLocalDescription(offer);
}).then(function() {
// wait for ICE gathering to complete
return new Promise(function(resolve) {
if (pc.iceGatheringState === 'complete') {
resolve();
} else {
function checkState() {
if (pc.iceGatheringState === 'complete') {
pc.removeEventListener('icegatheringstatechange', checkState);
resolve();
}
}
pc.addEventListener('icegatheringstatechange', checkState);
}
});
}).then(function() {
var offer = pc.localDescription;
console.log('Offer SDP');
console.log(offer.sdp);
return fetch('/offer', {
body: JSON.stringify({
sdp: offer.sdp,
type: offer.type,
}),
headers: {
'Content-Type': 'application/json'
},
method: 'POST'
});
}).then(function(response) {
return response.json();
}).then(function(answer) {
console.log('Answer SDP');
console.log(answer.sdp);
return pc.setRemoteDescription(answer);
});
}
function start() {
document.getElementById('start').style.display = 'none';
negotiate();
document.getElementById('stop').style.display = 'inline-block';
}
function stop() {
document.getElementById('stop').style.display = 'none';
// close peer connection
setTimeout(function() {
pc.close();
}, 500);
}