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Code Issues Releases Wiki Activity

WebRTC JS module

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This commit is contained in:
Alexandre Iooss
2020-10-21 22:10:39 +02:00
parent 0b3fb87fa2
commit 9d162b13ed
4 changed files with 128 additions and 89 deletions
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81
web/static/js/viewer.js
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@ -1,81 +0,0 @@
let peerConnection;
let streamPath = window.location.href;
let stream = streamPath;
let quality = "source";
const startPeerConnection = () => {
// Init peer connection
peerConnection = new RTCPeerConnection({
iceServers: [{ urls: stunServers }]
});
// On connection change, change indicator color
// if connection failed, restart peer connection
peerConnection.oniceconnectionstatechange = e => {
console.log("ICE connection state changed, " + peerConnection.iceConnectionState);
switch (peerConnection.iceConnectionState) {
case "disconnected":
document.getElementById("connectionIndicator").style.fill = "#dc3545";
break;
case "checking":
document.getElementById("connectionIndicator").style.fill = "#ffc107";
break;
case "connected":
document.getElementById("connectionIndicator").style.fill = "#28a745";
break;
case "closed":
case "failed":
console.log("Connection failed, restarting...");
peerConnection.close();
peerConnection = null;
setTimeout(startPeerConnection, 1000);
break;
}
};
// We want to receive audio and video
peerConnection.addTransceiver("video", { "direction": "sendrecv" });
peerConnection.addTransceiver("audio", { "direction": "sendrecv" });
// Create offer and set local description
peerConnection.createOffer().then(offer => {
// After setLocalDescription, the browser will fire onicecandidate events
peerConnection.setLocalDescription(offer);
}).catch(console.log);
// When candidate is null, ICE layer has run out of potential configurations to suggest
// so let's send the offer to the server
peerConnection.onicecandidate = event => {
if (event.candidate === null) {
// Send offer to server
// The server replies with its description
// After setRemoteDescription, the browser will fire ontrack events
console.log("Sending session description to server");
fetch(streamPath, {
method: "POST",
headers: {
"Accept": "application/json",
"Content-Type": "application/json"
},
body: JSON.stringify({
"webRtcSdp": peerConnection.localDescription,
"stream": stream,
"quality": quality
})
})
.then(response => response.json())
.then((data) => peerConnection.setRemoteDescription(new RTCSessionDescription(data)))
.catch(console.log);
}
};
// When video track is received, configure player
peerConnection.ontrack = function (event) {
console.log(`New ${event.track.kind} track`);
if (event.track.kind === "video") {
const viewer = document.getElementById("viewer");
viewer.srcObject = event.streams[0];
}
};
};