private async void _adapter_DeviceAdvertised(object sender, Plugin.BLE.Abstractions.EventArgs.DeviceEventArgs e)
{
if (e?.Device == null)
{
BpLogger.Debug("Null BLE advertisement received: skipping");
return;
}
var advertName = e.Device.Name;
var btAddr = e.Device.Id.ToString();
BpLogger.Trace($"Got BLE Advertisement for device: {advertName} / {btAddr}");
if (_seenAddresses.Contains(btAddr))
{
BpLogger.Trace($"Ignoring advertisement for already connecting device: {btAddr}");
//return;
}
else
{
_seenAddresses.Add(btAddr);
}
Debug.WriteLine("BLE device found: " + advertName);
// We always need a name to match against.
if (string.IsNullOrEmpty(advertName))
{
return;
}
var deviceCriteria = new BluetoothLEProtocolConfiguration(advertName);
var deviceFactory = DeviceConfigurationManager.Manager.Find(deviceCriteria);
// If we don't have a protocol to match the device, we can't do anything with it.
if (deviceFactory == null || !(deviceFactory.Config is BluetoothLEProtocolConfiguration bleConfig))
{
BpLogger.Debug($"No usable device factory available for {advertName}.");
return;
}
// If a device is turned on after scanning has started, windows seems to lose the device
// handle the first couple of times it tries to deal with the advertisement. Just log the
// error and hope it reconnects on a later retry.
IButtplugDeviceImpl bleDevice = null;
IButtplugDevice btDevice = null;
try
{
await _adapter.ConnectToDeviceAsync(e.Device);
bleDevice = await XamarinBluetoothDeviceInterface.Create(LogManager, bleConfig, e.Device).ConfigureAwait(false);
btDevice = await deviceFactory.CreateDevice(LogManager, bleDevice).ConfigureAwait(false);
InvokeDeviceAdded(new DeviceAddedEventArgs(btDevice));
}
catch (Exception ex)
{
if (btDevice != null)
{
btDevice.Disconnect();
}
else
{
bleDevice?.Disconnect();
}
BpLogger.Error(
$"Cannot connect to device {advertName} {btAddr}: {ex.Message}");
}
}