Record on iOS: `onProgress` is always zero

[yanivshaked]

While recording on iOS, onProgress always provides zero.
Please note the same issue exists in flutter_sound:
Canardoux/flutter_sound#517

But how do I "translate" the workaround suggested there to tau?

Specifying SessionCategory.record along with AudioFocus.requestFocusAndDuckOthers seems to be working:


    await _audioRecorder.openAudioSession(
      focus: AudioFocus.requestFocusAndDuckOthers,
      category: SessionCategory.record,
    );

[yanivshaked]

I have found a workaround to solve this issue for now.
Creating TauPlayer and calling open just before the recording session solves the above issue.
Note that this is a temporary fix/workaround, a clean fix should be found.