I've two devices running Windows on them; a Raspberry PI 3B + with Windows 10 IoT and a Surface pro with Windows 10. Now, I'm attempting to establish a communication between the two.
Here's my server at the Raspberry Pi:
private readonly Guid _rfcommChatServiceUuid = Guid.Parse("34B1CF4D-1069-4AD6-89B6-E161D79BE4D8");
private async void CreateServer()
{
_provider = await RfcommServiceProvider.CreateAsync(RfcommServiceId.FromUuid(_rfcommChatServiceUuid));
_listener = new StreamSocketListener();
_listener.ConnectionReceived += OnConnectionReceived;
await _listener.BindServiceNameAsync(_provider.ServiceId.AsString(),SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication);
InitializeServiceSdpAttributes(_provider);
_provider.StartAdvertising(_listener);
}
const uint SERVICE_VERSION_ATTRIBUTE_ID = 0x0300;
const byte SERVICE_VERSION_ATTRIBUTE_TYPE = 0x0A; // UINT32
const uint SERVICE_VERSION = 200;
void InitializeServiceSdpAttributes(RfcommServiceProvider provider)
{
var writer = new DataWriter();
writer.WriteByte(SERVICE_VERSION_ATTRIBUTE_TYPE);
writer.WriteUInt32(SERVICE_VERSION);
var data = writer.DetachBuffer();
provider.SdpRawAttributes.Add(SERVICE_VERSION_ATTRIBUTE_ID, data);
}
async void OnConnectionReceived(
StreamSocketListener listener,
StreamSocketListenerConnectionReceivedEventArgs args)
{
_provider.StopAdvertising();
_listener.Dispose();
_listener = null;
_socket = args.Socket;
And, here's my client at the Surface Pro:
var services = await DeviceInformation.FindAllAsync(
RfcommDeviceService.GetDeviceSelector(RfcommServiceId.FromUuid(_rfcommChatServiceUuid)));
I don't understand why the services collection is still empty, can anyone tell me what's going on here?