createAnswer method

Future<RTCSessionDescription> createAnswer({ bool audioRecv = true, bool videoRecv = true, bool audioSend = true, bool videoSend = true, })

This method is used to create webrtc answer, sets local description on internal PeerConnection object It supports both style of answer creation that is plan-b and unified.

Implementation

Future<RTCSessionDescription> createAnswer(
    {bool audioRecv: true,
    bool videoRecv: true,
    bool audioSend: true,
    bool videoSend: true}) async {
  dynamic offerOptions;
  if (_context._isUnifiedPlan && !_context._usePlanB) {
    await _prepareTranscievers(
        audioRecv: audioRecv,
        audioSend: audioSend,
        videoRecv: videoRecv,
        videoSend: videoSend);
  } else {
    offerOptions = {
      "offerToReceiveAudio": audioRecv,
      "offerToReceiveVideo": videoRecv
    };
  }
  try {
    RTCSessionDescription offer =
        await webRTCHandle!.peerConnection!.createAnswer(offerOptions ?? {});
    await webRTCHandle!.peerConnection!.setLocalDescription(offer);
    return offer;
  } catch (e) {
    //    handling kstable exception most ugly way but currently there's no other workaround, it just works
    RTCSessionDescription offer =
        await webRTCHandle!.peerConnection!.createAnswer(offerOptions ?? {});
    await webRTCHandle!.peerConnection!.setLocalDescription(offer);
    return offer;
  }
}