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<html>
<head>
<title>trickle-ice</title>
</head>
<body>
<h3> ICE Connection States </h3>
<div id="iceConnectionStates"></div> <br />
<h3> Inbound DataChannel Messages </h3>
<div id="inboundDataChannelMessages"></div>
</body>
<script>
const socket = new WebSocket(`ws://${window.location.host}/websocket`)
let pc = new RTCPeerConnection({
iceServers: [
{
urls: 'stun:stun.l.google.com:19302'
}
]
})
socket.onmessage = e => {
let msg = JSON.parse(e.data)
if (!msg) {
return console.log('failed to parse msg')
}
if (msg.candidate) {
pc.addIceCandidate(msg)
} else {
pc.setRemoteDescription(msg)
}
}
let dc = pc.createDataChannel('data')
dc.onmessage = event => {
let el = document.createElement('p')
el.appendChild(document.createTextNode(event.data))
document.getElementById('inboundDataChannelMessages').appendChild(el);
}
pc.onicecandidate = e => {
if (e.candidate && e.candidate.candidate !== "") {
socket.send(JSON.stringify(e.candidate))
}
}
pc.oniceconnectionstatechange = () => {
let el = document.createElement('p')
el.appendChild(document.createTextNode(pc.iceConnectionState))
document.getElementById('iceConnectionStates').appendChild(el);
}
socket.onopen = () => {
pc.createOffer().then(offer => {
pc.setLocalDescription(offer)
socket.send(JSON.stringify(offer))
})
}
</script>
</html>
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