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