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<html>
<head>
<title>ice-restart</title>
</head>
<body>
<button onclick="window.doSignaling(true)"> ICE Restart </button><br />
<h3> ICE Connection States </h3>
<div id="iceConnectionStates"></div> <br />
<h3> ICE Selected Pairs </h3>
<div id="iceSelectedPairs"></div> <br />
<h3> Inbound DataChannel Messages </h3>
<div id="inboundDataChannelMessages"></div>
</body>
<script>
let pc = new RTCPeerConnection({
iceServers: [
{
urls: 'stun:stun.l.google.com:19302'
}
]
})
let dc = pc.createDataChannel('data')
dc.onopen = () => {
setInterval(function() {
let el = document.createElement('template')
let selectedPair = pc.sctp.transport.iceTransport.getSelectedCandidatePair()
el.innerHTML = `<div>
<ul>
<li> <i> Local</i> - ${selectedPair.local.candidate}</li>
<li> <i> Remote</i> - ${selectedPair.remote.candidate} </li>
</ul>
</div>`
document.getElementById('iceSelectedPairs').appendChild(el.content.firstChild);
}, 3000);
}
dc.onmessage = event => {
let el = document.createElement('p')
el.appendChild(document.createTextNode(event.data))
document.getElementById('inboundDataChannelMessages').appendChild(el);
}
pc.oniceconnectionstatechange = () => {
let el = document.createElement('p')
el.appendChild(document.createTextNode(pc.iceConnectionState))
document.getElementById('iceConnectionStates').appendChild(el);
}
window.doSignaling = iceRestart => {
pc.createOffer({iceRestart})
.then(offer => {
pc.setLocalDescription(offer)
return fetch(`/doSignaling`, {
method: 'post',
headers: {
'Accept': 'application/json, text/plain, */*',
'Content-Type': 'application/json'
},
body: JSON.stringify(offer)
})
})
.then(res => res.json())
.then(res => pc.setRemoteDescription(res))
.catch(alert)
}
window.doSignaling(false)
</script>
</html>
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