Files
go2rtc/www/webrtc.html
2022-10-31 08:34:32 +03:00

112 lines
3.5 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>go2rtc - WebRTC</title>
<style>
body {
margin: 0;
padding: 0;
}
html, body {
height: 100%;
width: 100%;
}
#video {
/* video "container" size */
width: 100%;
height: 100%;
background: black;
}
</style>
</head>
<body>
<video id="video" autoplay controls playsinline muted></video>
<script>
function init(stream) {
// support api_path
const baseUrl = location.origin + location.pathname.substr(
0, location.pathname.lastIndexOf("/")
);
const ws = new WebSocket(`ws${baseUrl.substr(4)}/api/ws${location.search}`);
ws.onopen = () => {
console.debug('ws.onopen');
pc.createOffer().then(offer => {
pc.setLocalDescription(offer).then(() => {
console.log(offer.sdp);
const msg = {type: 'webrtc/offer', value: pc.localDescription.sdp};
ws.send(JSON.stringify(msg));
});
});
}
ws.onmessage = ev => {
const msg = JSON.parse(ev.data);
console.debug('ws.onmessage', msg);
if (msg.type === 'webrtc/candidate') {
pc.addIceCandidate({candidate: msg.value, sdpMid: ''});
} else if (msg.type === 'webrtc/answer') {
pc.setRemoteDescription({type: 'answer', sdp: msg.value});
}
}
const pc = new RTCPeerConnection({
iceServers: [{urls: 'stun:stun.l.google.com:19302'}]
});
pc.onicecandidate = ev => {
console.debug("pc.onicecandidate", ev.candidate);
if (ev.candidate !== null) {
ws.send(JSON.stringify({
type: 'webrtc/candidate', value: ev.candidate.toJSON().candidate
}));
}
}
pc.ontrack = ev => {
const video = document.getElementById('video');
console.debug('pc.ontrack', video.srcObject !== null);
// when audio track not exist in Chrome
if (ev.streams.length === 0) return;
// when audio track not exist in Firefox
if (ev.streams[0].id[0] === '{') return;
// when stream already init
if (video.srcObject !== null) return;
video.srcObject = ev.streams[0];
}
// Safari don't support "offerToReceiveVideo"
// so need to create transeivers manually
pc.addTransceiver('video', {direction: 'recvonly'});
pc.addTransceiver('audio', {direction: 'recvonly'});
if (stream) {
stream.getTracks().forEach(track => {
const sender = pc.addTrack(track, stream)
// track.stop();
// setTimeout(() => {
// navigator.mediaDevices.getUserMedia({audio: true}).then(stream => {
// stream.getTracks().forEach(track => {
// sender.replaceTrack(track);
// });
// });
// }, 10000);
});
}
}
if (navigator.mediaDevices) {
navigator.mediaDevices.getUserMedia({audio: true}).then(init).catch(() => init());
} else {
init();
}
</script>
</body>
</html>