Is my understanding of WebRTC protocol Correct?

Question

This is how I understand the protocol...

• user on browser get media stream
• generates own sdp (data on codecs, security, etc)
• creates an offer with it
• send this offer to server via signalling method (websocket)
• signalling server, looks who is this offer for and redirect it to that client
• client 2's browser gets the offer with sdp and in turn generate its own offer with its own sdp and send it to server
• server redirect client 2's offer to client 1. now both know each other specs.

Meanwhile, however...

• as soon as whichever client sends offer with sdp they also start to contact ICE (stun) server(s) to get possible reachable path to them via correct PublicIP:Port:Protocol combo, which they also send to another client via signalling server.

Answer 1

Client 2 generates an answer (using createAnswer), not an offer. The main difference is that an answer is a subset of the capabilities (like codecs) contained in the offer.

Otherwise this sounds good.