that actually depends on how you build your app, what kind of data it uses and how you deliver it. but in a general case I’d recommend using socket.io. you’ll have to implement SDP (offer and transfer) and the Ice Candidate exchange. You’ll also most likely have to send the user state through a signal server (e.g. turning on/off the mic or cam). or you can implement that with a data channel when the connection between users is established. if you need more detailed help, contact me through the forasoft.com/contacts :) will be glad to help