public BluetoothCharacteristic(BluetoothGattCharacteristic gattCharacteristic, BluetoothService service)
{
this.Service = service;
this.GattCharacteristic = gattCharacteristic;
this.Id = new Guid(gattCharacteristic.Uuid.ToString());
}
public async Task <IBluetoothService[]> GetServicesAsync(CancellationToken cancellationToken)
{
if (_servicesDiscovered)
{
return(ServicesById.Values.Select(x => (IBluetoothService)x).ToArray());
}
else
{
TaskCompletionSource <IBluetoothService[]> tcs = new TaskCompletionSource <IBluetoothService[]>();
CancellationTokenSource cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
cts.CancelAfter(TimeSpan.FromSeconds(5));
EventHandler <ServicesDiscoveredEventArgs> eventHandler = null;
eventHandler = (o, e) =>
{
BluetoothService service;
List <IBluetoothService> servicesList = new List <IBluetoothService>();
foreach (var platformService in e.Gatt.Services)
{
service = new BluetoothService(platformService, this);
this.ServicesById[platformService.Uuid] = service;
servicesList.Add(service);
}
tcs.TrySetResult(servicesList.ToArray());
};
this.ServicesDiscovered += eventHandler;
try
{
using (cts.Token.Register(() => tcs.TrySetResult(new IBluetoothService[] { }), false))
{
Connect();
return(await tcs.Task.ConfigureAwait(continueOnCapturedContext : false));
}
}
finally
{
this.ServicesDiscovered -= eventHandler;
}
}
}
