renegotiateWithParticipant method

Implementation

@override
Future<void> renegotiateWithParticipant({
  required String targetId,
  required String sdp,
}) async {
  if (targetId.isEmpty && _remoteSubscribers.length != 1) {
    return;
  }

  late String participantId;

  if (targetId.isEmpty) {
    participantId = _remoteSubscribers.keys.first;
    await Future.delayed(1.seconds);
  } else {
    participantId = targetId;
  }

  if (_remoteSubscribers[participantId]?.peerConnection == null) return;

  final RTCPeerConnection pc =
      _remoteSubscribers[participantId]!.peerConnection;

  final RTCSessionDescription remoteDescription = RTCSessionDescription(
    sdp,
    DescriptionType.offer.type,
  );

  await pc.setRemoteDescription(remoteDescription);

  try {
    final String sdpAnswer = await _createAnswerSdp(pc);
    final RTCSessionDescription localDescription = RTCSessionDescription(
      sdpAnswer,
      DescriptionType.answer.type,
    );
    await pc.setLocalDescription(localDescription);

    _wsEmitter.answerSubscription(
      roomId: _currentRoomId!,
      targetId: targetId,
      sdp: sdpAnswer,
      connectionType: _connectionType,
    );
  } catch (_) {}
}