Ios audio sometimes missing

[MeintrupStefan]

Ios audio sometimes missing

[MeintrupStefan]

I found the solution.

I am adding the tracks to the session by:

session.peerConnection.addTrack(track, stream)

This returns a RTCRtpSender object.

If the audio of the device is not send, then the sender object will have a stat with 0.0 "totalAudioEnergy".

My solution attempt:

final sender = session.peerConnection.addTrack(track, stream);
for (var stat in await sender.getStats()) {
   if (stat.values["totalAudioEnergy"] == 0.0) {
      // The initially added track does not work. Dispose it.
      disposePreviousLocalStream();
     // Create yourself a new local stream
     final localStream = createNewLocalStream();
     // This adds a new audio stream without the need for renegotiation
     sender.replaceTrack(localStream.getAudioTracks()[0]);
   }
}

[MeintrupStefan]

The reason why this happens on IOS sometimes is still not clear to me, but the above solution is good enough for me.