2020-10-06 07:20:25 +00:00
|
|
|
let peerConnection
|
|
|
|
let streamPath = window.location.href
|
2020-09-22 20:08:14 +00:00
|
|
|
|
2020-09-24 10:40:48 +00:00
|
|
|
startPeerConnection = () => {
|
|
|
|
// Init peer connection
|
|
|
|
peerConnection = new RTCPeerConnection({
|
2020-09-29 15:27:19 +00:00
|
|
|
iceServers: [{ urls: stunServers }]
|
2020-09-24 10:40:48 +00:00
|
|
|
})
|
2020-09-22 20:08:14 +00:00
|
|
|
|
2020-09-24 10:40:48 +00:00
|
|
|
// On connection change, change indicator color
|
|
|
|
// if connection failed, restart peer connection
|
|
|
|
peerConnection.oniceconnectionstatechange = e => {
|
2020-10-11 13:03:28 +00:00
|
|
|
console.log("ICE connection state changed, " + peerConnection.iceConnectionState)
|
2020-09-24 10:40:48 +00:00
|
|
|
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
|
2020-09-29 12:23:34 +00:00
|
|
|
setTimeout(startPeerConnection, 1000)
|
2020-09-24 10:40:48 +00:00
|
|
|
break
|
|
|
|
}
|
2020-09-22 20:08:14 +00:00
|
|
|
}
|
|
|
|
|
2020-09-24 10:40:48 +00:00
|
|
|
// We want to receive audio and video
|
|
|
|
peerConnection.addTransceiver('video', { 'direction': 'sendrecv' })
|
|
|
|
peerConnection.addTransceiver('audio', { 'direction': 'sendrecv' })
|
2020-09-23 11:52:12 +00:00
|
|
|
|
2020-09-24 10:40:48 +00:00
|
|
|
// Create offer and set local description
|
|
|
|
peerConnection.createOffer().then(offer => {
|
|
|
|
// After setLocalDescription, the browser will fire onicecandidate events
|
|
|
|
peerConnection.setLocalDescription(offer)
|
|
|
|
}).catch(console.log)
|
2020-09-23 11:52:12 +00:00
|
|
|
|
2020-09-24 10:40:48 +00:00
|
|
|
// 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 know the stream name from the url
|
|
|
|
// The server replies with its description
|
|
|
|
// After setRemoteDescription, the browser will fire ontrack events
|
|
|
|
console.log("Sending session description to server")
|
2020-10-06 07:20:25 +00:00
|
|
|
fetch(streamPath, {
|
2020-09-24 10:40:48 +00:00
|
|
|
method: 'POST',
|
|
|
|
headers: {
|
|
|
|
'Accept': 'application/json',
|
|
|
|
'Content-Type': 'application/json'
|
|
|
|
},
|
|
|
|
body: JSON.stringify(peerConnection.localDescription)
|
|
|
|
})
|
|
|
|
.then(response => response.json())
|
|
|
|
.then((data) => peerConnection.setRemoteDescription(new RTCSessionDescription(data)))
|
|
|
|
.catch(console.log)
|
|
|
|
}
|
2020-09-22 20:08:14 +00:00
|
|
|
}
|
|
|
|
|
2020-09-24 10:40:48 +00:00
|
|
|
// 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]
|
|
|
|
}
|
2020-09-22 20:08:14 +00:00
|
|
|
}
|
|
|
|
}
|
2020-10-18 09:32:57 +00:00
|
|
|
|
|
|
|
// Register keyboard interactions
|
|
|
|
window.onkeydown = function (event) {
|
|
|
|
let viewer = document.getElementById("viewer")
|
|
|
|
// Toggle fullscreen mode
|
|
|
|
if (event.key === "f") {
|
|
|
|
if (document.fullscreen)
|
|
|
|
document.exitFullscreen().then()
|
|
|
|
else
|
|
|
|
viewer.requestFullscreen().then()
|
|
|
|
}
|
|
|
|
// (Un)mute the stream
|
|
|
|
else if (event.key === "m") {
|
|
|
|
viewer.muted = !viewer.muted;
|
|
|
|
}
|
|
|
|
// Pause the stream
|
|
|
|
else if (event.key === " ") {
|
|
|
|
if (viewer.paused)
|
|
|
|
viewer.play()
|
|
|
|
else
|
|
|
|
viewer.pause()
|
|
|
|
}
|
|
|
|
}
|