[nafey]

This looks interesting. What I don't understand is: how was it implemented without a server relay. I am no expert in WebRTC (or P2P for that matter) but I always assumed that there needs to be a central location for users to exchange their addresses and only then a P2P connection can be established. This must be the case here as well right? Or am I mistaken?

[avovsya]

That is exactly the case, there is a server in the background responsible for maintaining sessions and setting up WebRTC connections(ICE handshakes), when all clients are connected - messages are sent p2p