ChatterBox.Client.Universal.Background.Voip.VoipCoordinator.StartVoipTask C# (CSharp) Method

        public async Task StartVoipTask()
        {
            // Leaving the idle state means there's a call that's happening.
            // Trigger the VoipTask to prevent this background task from terminating.
#if true // VoipCallCoordinator support
            if (Hub.Instance.VoipTaskInstance == null &&
                ApiInformation.IsApiContractPresent("Windows.ApplicationModel.Calls.CallsVoipContract", 1))
            {
                var vcc = VoipCallCoordinator.GetDefault();
                var voipEntryPoint = typeof(VoipTask).FullName;
                Debug.WriteLine($"ReserveCallResourcesAsync {voipEntryPoint}");
                try
                {
                    var status = await vcc.ReserveCallResourcesAsync(voipEntryPoint);
                    Debug.WriteLine($"ReserveCallResourcesAsync result -> {status}");
                }
                catch (Exception ex)
                {
                    const int RTcTaskAlreadyRunningErrorCode = -2147024713;
                    if (ex.HResult == RTcTaskAlreadyRunningErrorCode)
                    {
                        Debug.WriteLine("VoipTask already running");
                    }
                    else
                    {
                        Debug.WriteLine($"ReserveCallResourcesAsync error -> {ex.HResult} : {ex.Message}");
                    }
                }
            }
#else
            var ret = await _hub.WebRtcTaskTrigger.RequestAsync();
            Debug.WriteLine($"VoipTask Trigger -> {ret}");
#endif
        }