simple webrtc connection via peers
const pc1 = new RTCPeerConnection()
const pc2 = new RTCPeerConnection()
pc1.createOffer().
.then((offer) => pc1.setLocalDescription(offer))
.then(() => pc2.setRemoteDescription(pc1.localDescription))
.then(() => pc2.createAnswer())
.then((answer) => pc2.setLocalDescription(answer))
.then(() => pc1.setRemoteDescription(pc2.localDescription))