golanggohlsrtmpwebrtcmedia-serverobs-studiortcprtmp-proxyrtmp-serverrtprtsprtsp-proxyrtsp-relayrtsp-serversrtstreamingwebrtc-proxy
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174 lines
3.9 KiB
174 lines
3.9 KiB
<!DOCTYPE html> |
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<html> |
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<head> |
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<meta charset="utf-8"> |
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<style> |
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html, body { |
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margin: 0; |
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padding: 0; |
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height: 100%; |
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overflow: hidden; |
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} |
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#video { |
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width: 100%; |
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height: 100%; |
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background: black; |
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} |
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</style> |
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</head> |
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<body> |
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<video id="video" muted controls autoplay playsinline></video> |
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<script> |
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const restartPause = 2000; |
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class Receiver { |
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constructor() { |
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this.terminated = false; |
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this.ws = null; |
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this.pc = null; |
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this.restartTimeout = null; |
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this.start(); |
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} |
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start() { |
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console.log("connecting"); |
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this.ws = new WebSocket(window.location.href.replace(/^http/, "ws") + 'ws'); |
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this.ws.onerror = () => { |
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console.log("ws error"); |
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if (this.ws === null) { |
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return; |
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} |
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this.ws.close(); |
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this.ws = null; |
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}; |
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this.ws.onclose = () => { |
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console.log("ws closed"); |
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this.ws = null; |
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this.scheduleRestart(); |
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}; |
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this.ws.onmessage = (msg) => this.onIceServers(msg); |
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} |
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onIceServers(msg) { |
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if (this.ws === null) { |
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return; |
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} |
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const iceServers = JSON.parse(msg.data); |
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this.pc = new RTCPeerConnection({ |
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iceServers, |
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}); |
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this.ws.onmessage = (msg) => this.onRemoteDescription(msg); |
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this.pc.onicecandidate = (evt) => this.onIceCandidate(evt); |
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this.pc.oniceconnectionstatechange = () => { |
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if (this.pc === null) { |
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return; |
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} |
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console.log("peer connection state:", this.pc.iceConnectionState); |
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switch (this.pc.iceConnectionState) { |
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case "connected": |
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this.pc.onicecandidate = undefined; |
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this.ws.onmessage = undefined; |
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this.ws.onerror = undefined |
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this.ws.onclose = undefined; |
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// do not close the WebSocket connection |
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// in order to allow the other side of the connection |
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// to switch to the "connected" state before WebSocket is closed. |
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break; |
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case "disconnected": |
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this.scheduleRestart(); |
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} |
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}; |
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this.pc.ontrack = (evt) => { |
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console.log("new track " + evt.track.kind); |
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document.getElementById("video").srcObject = evt.streams[0]; |
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}; |
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const direction = "sendrecv"; |
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this.pc.addTransceiver("video", { direction }); |
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this.pc.addTransceiver("audio", { direction }); |
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this.pc.createOffer() |
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.then((desc) => { |
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if (this.pc === null || this.ws === null) { |
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return; |
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} |
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this.pc.setLocalDescription(desc); |
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console.log("sending offer"); |
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this.ws.send(JSON.stringify(desc)); |
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}); |
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} |
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onRemoteDescription(msg) { |
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if (this.pc === null || this.ws === null) { |
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return; |
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} |
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this.pc.setRemoteDescription(new RTCSessionDescription(JSON.parse(msg.data))); |
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this.ws.onmessage = (msg) => this.onRemoteCandidate(msg); |
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} |
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onIceCandidate(evt) { |
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if (this.ws === null) { |
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return; |
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} |
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if (evt.candidate !== null) { |
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if (evt.candidate.candidate !== "") { |
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this.ws.send(JSON.stringify(evt.candidate)); |
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} |
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} |
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} |
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onRemoteCandidate(msg) { |
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if (this.pc === null) { |
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return; |
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} |
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this.pc.addIceCandidate(JSON.parse(msg.data)); |
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} |
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scheduleRestart() { |
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if (this.terminated) { |
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return; |
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} |
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if (this.ws !== null) { |
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this.ws.close(); |
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this.ws = null; |
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} |
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if (this.pc !== null) { |
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this.pc.close(); |
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this.pc = null; |
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} |
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this.restartTimeout = window.setTimeout(() => { |
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this.restartTimeout = null; |
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this.start(); |
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}, restartPause); |
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} |
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} |
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window.addEventListener('DOMContentLoaded', () => new Receiver()); |
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</script> |
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</body> |
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</html>
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