Created
March 19, 2021 03:24
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WebRTC Example (Web, Plain JavaScript)
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <title>WebRTC Practice</title> | |
| </head> | |
| <body> | |
| <video | |
| id="vid1" | |
| src="" | |
| style="height: 500px; width: 500px; border: 1px solid red" | |
| ></video> | |
| <video | |
| id="vid2" | |
| src="" | |
| style="height: 500px; width: 500px; border: 1px solid green" | |
| ></video> | |
| <script src="./index.js"></script> | |
| </body> | |
| </html> |
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| const vidOne = document.querySelector("#vid1"); | |
| const vidTwo = document.querySelector("#vid2"); | |
| const iceCfg = { iceServers: [{ urls: "stun:stun.l.google.com:19302" }] }; | |
| const peerConnOne = new RTCPeerConnection(iceCfg); | |
| const peerConnTwo = new RTCPeerConnection(iceCfg); | |
| async function getUserStream() { | |
| const stream = navigator.mediaDevices.getUserMedia({ | |
| audio: false, | |
| video: { | |
| width: { min: 0 }, | |
| height: { min: 0 }, | |
| }, | |
| }); | |
| return stream; | |
| } | |
| async function makeCall() { | |
| try { | |
| const stream = await getUserStream(); | |
| stream.getTracks().forEach((tr) => peerConnOne.addTrack(tr, stream)); | |
| vidOne.srcObject = stream; | |
| vidOne.onloadedmetadata = () => vidOne.play(); | |
| const offer = await peerConnOne.createOffer(); | |
| await peerConnOne.setLocalDescription(offer); | |
| await peerConnTwo.setRemoteDescription(offer); | |
| const answer = await peerConnTwo.createAnswer(); | |
| await peerConnTwo.setLocalDescription(answer); | |
| await peerConnOne.setRemoteDescription(answer); | |
| } catch (err) { | |
| console.log(err); | |
| } | |
| } | |
| makeCall(); | |
| // handle ICE | |
| peerConnOne.onicecandidate = ({ candidate }) => { | |
| candidate && peerConnTwo.addIceCandidate(candidate); | |
| }; | |
| peerConnTwo.onicecandidate = ({ candidate }) => { | |
| candidate && peerConnOne.addIceCandidate(candidate); | |
| }; | |
| // check connection state | |
| peerConnOne.onconnectionstatechange = (e) => { | |
| console.log(`peerOne -----> `, e.currentTarget.connectionState); | |
| }; | |
| peerConnTwo.onconnectionstatechange = (e) => { | |
| console.log(`peerTwo -----> `, e.currentTarget.connectionState); | |
| }; | |
| // handle remoteStream | |
| let remoteStream = new MediaStream(); | |
| peerConnTwo.ontrack = (ev) => { | |
| remoteStream.addTrack(ev.track, remoteStream); | |
| }; | |
| vidTwo.srcObject = remoteStream; | |
| vidTwo.onloadedmetadata = () => vidTwo.play(); |
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