static bool PlatformPairRequest(BluetoothAddress device, string pin)
{
if (pin != null)
{
if (pin.Length > BLUETOOTH_PIN_INFO.BTH_MAX_PIN_SIZE)
{
throw new ArgumentOutOfRangeException(nameof(pin));
}
}
BLUETOOTH_DEVICE_INFO info = new BLUETOOTH_DEVICE_INFO();
info.dwSize = Marshal.SizeOf(info);
info.Address = device;
RemoveRedundantAuthHandler(device);
NativeMethods.BluetoothGetDeviceInfo(IntPtr.Zero, ref info);
// don't wait on this process if already paired
if (info.fAuthenticated)
{
return(true);
}
var authHandler = new Win32BluetoothAuthentication(device, pin);
// Handle response without prompt
_authenticationHandlers.Add(authHandler);
bool success = NativeMethods.BluetoothAuthenticateDeviceEx(IntPtr.Zero, IntPtr.Zero, ref info, null, BluetoothAuthenticationRequirements.MITMProtectionNotRequired) == 0;
authHandler.WaitOne();
BluetoothDeviceInfo deviceInfo = new BluetoothDeviceInfo(info);
deviceInfo.Refresh();
// On Windows 7 these services are not automatically activated
if (deviceInfo.ClassOfDevice.Device == DeviceClass.AudioVideoHeadset || deviceInfo.ClassOfDevice.Device == DeviceClass.AudioVideoHandsFree)
{
deviceInfo.SetServiceState(BluetoothService.Headset, true);
deviceInfo.SetServiceState(BluetoothService.Handsfree, true);
}
return(success);
}
static void RemoveRedundantAuthHandler(ulong address)
{
Win32BluetoothAuthentication redundantAuth = null;
foreach (Win32BluetoothAuthentication authHandler in _authenticationHandlers)
{
if (authHandler.Address == address)
{
redundantAuth = authHandler;
redundantAuth.Dispose();
break;
}
}
if (redundantAuth != null)
{
_authenticationHandlers.Remove(redundantAuth);
}
}