It's using EasyRTC to handle WebRTC. I found it a delight to work with. The live examples are running with TURN server hosted by Xirsys. I did catch that artic

It's using EasyRTC to handle WebRTC. I found it a delight to work with. The live examples are running with TURN server hosted by Xirsys. I did catch that article last week. If I remember correctly it boiled down to a lack of good support for UDP / WebRTC in a client-server arch. It's actually one of the problems I want to play with soon. There are some frameworks, like Janus, that do it but I haven't heard great things.