WebRTC iOS Audio Chat

Question

I am creating a voice only (no video) chat application. I have created my own node.js/socket.io based server for signaling.

For WebRTC, I am using the following pod: https://cocoapods.org/pods/WebRTC

I have been successful in creating peer connection, adding local stream, setting local/remote sdp, and send/receive ice candidates. The "didAddStream" delegate method is also called successfully having audio tracks but I am stuck here. I don't know what should I do with the audio track. What should be the next step? How would I send/receive audio on both sides?

Also, if I integrate CallKit, what changes do I need to make.

Answer 1

I got stuck on this one too. You have to retain the RTCMediaStream object in order for the audio to play. You don't need to do anything with the RTCAudioTrack , it will play automatically. I simply assign it to property so it can get retained. See my example here: https://github.com/redfearnk/WebRTCVideoChat/blob/master/WebRTCVideoChat/WebRTCClient.swift#L143