I’m trying to figure out which is the best way to do the following: having peer-to-peer communication between parties A and B, I want to add a third-party C, but the difficulty is that I do not want a complete mesh, B should only communicate with C through A (setting MCU, where A is the MCU).
B <-> A <-> C
What I tried so far is this: when peerConnectionAC is created and the didAddStream callback is called, I add peerConnectionAB.remoteStream as a local stream to peerConnectionAC, for example:
peerConnectionAC.addStream(remoteStreamAB)
Then I do it the other way around:
peerConnectionAB.addStream(remoteStreamAC)
At this point, WebRTC starts the re-registration callback, so a new offer is generated and sent to the relevant parties.
Audio now flows between B and C through A, but it is terribly distorted, almost incomprehensible. The sound flowing from the microphone to B and C remains clear.
Both peers use the same codec (OPUS, but also with iLBC) and with the same sampling rate.
The only link I found for this is a question more than six months ago , but without a clear answer.
It seems to be easy to do in the browser settings , but I need it to work on iOS / Android as a standalone application.
Can someone give me an idea or a pointer on how to fix a distorted sound?