/// <summary>
/// Asynchronously gets the requested service
/// </summary>
public static Task<IDevice> ConnectAsync(this IAdapter adapter, IDevice device)
{
if (device.State == DeviceState.Connected)
return Task.FromResult<IDevice>(device);
var tcs = new TaskCompletionSource<IDevice>();
EventHandler<DeviceConnectionEventArgs> h = null;
EventHandler<DeviceConnectionEventArgs> he = null;
h = (sender, e) =>
{
Mvx.TaggedTrace("ConnectAsync", "Connected: {0} {1}", e.Device.ID, e.Device.Name);
if (e.Device.ID == device.ID)
{
adapter.DeviceConnected -= h;
adapter.DeviceConnectionError -= he;
tcs.TrySetResult(e.Device);
}
};
he = (sender, e) =>
{
// Would be nice to use C#6.0 null-conditional operators like e.Device?.ID
Mvx.TaggedWarning("ConnectAsync", "Connection Error: {0} {1}",
(e.Device != null ? e.Device.ID.ToString() : ""),
(e.Device != null ? e.Device.Name : ""));
if(e.Device.ID == device.ID)
{
adapter.DeviceConnectionError -= he;
adapter.DeviceConnected -= h;
tcs.TrySetException(new Exception("Connect operation exception"));
}
};
adapter.DeviceConnected += h;
adapter.DeviceConnectionError += he;
adapter.ConnectToDevice(device);
return tcs.Task;
}
/// <summary>
/// Asynchronously gets the requested service
/// </summary>
public static Task<IDevice> ConnectAsync(this IAdapter adapter, IDevice device)
{
if (device.State == DeviceState.Connected)
return Task.FromResult<IDevice> (null);
var tcs = new TaskCompletionSource<IDevice> ();
EventHandler<DeviceConnectionEventArgs> h = null;
h = (sender, e) => {
Debug.WriteLine ("CCC: " + e.Device.ID + " " + e.Device.State);
if (e.Device.ID == device.ID)
{
adapter.DeviceConnected -= h;
tcs.SetResult (e.Device);
}
};
adapter.DeviceConnected += h;
adapter.ConnectToDevice (device);
return tcs.Task;
}
/// <summary>
/// Connect to a discovered <see cref="IBlePeripheral" />. Timeout if the connection is not obtained in
/// the provided time
/// </summary>
public static Task<IBleGattServer> ConnectToDevice( this IBluetoothLowEnergyAdapter adapter, IBlePeripheral device,
TimeSpan timeout )
{
return adapter.ConnectToDevice( device, new CancellationTokenSource( timeout ).Token );
}