<html>
<head>
    <script>
      document.addEventListener('DOMContentLoaded', async () => {
        const peer = new RTCPeerConnection({ 'iceServers': [{ 'urls': 'stun:23.21.150.121' }] })
        const offer = await peer.createOffer({ 'offerToReceiveVideo': true })
        await peer.setRemoteDescription(offer)
        const senders = peer.getSenders()
        setTimeout(async () => await senders[1].setParameters({}), 334)
        await peer.setRemoteDescription(offer)
      })
    </script>
</head>
</html>