When creating webrtc peer connection, I passed in a list of STUN/TURN ICE servers (no trickling ICE). But when establishing the connection I only saw local ip address in ice candidates in the offer created. The same for the answer received. The connection worked sometimes. Was that expected? Where I could check if that was wrong?
It turned out that TURN server urls do exist in the sdp offer and answer. The issue in my case was I added the ICE servers after peer connection creation so it didn't add to the offer.