Thread: Socket Function - Error 10047

I'm trying to open a socket for using bluetooth and I'm getting an error (10047: Address family not supported by protocol family).
I'm using a USB dongle that's WIDCOMM. I'm able to find and search for devices using the bluetooth manager, so I think that it should work with the Microsoft SDK.

Code:

#include <stdio.h>
#include <stdlib.h>
#include <Winsock2.h>
#include <Bthsdpdef.h>
#include <Ws2bth.h>
#include <BluetoothAPIs.h>


int main()
{

	WSADATA wsd;
	SOCKADDR_BTH btconn;
	SOCKADDR_BTH btclient;
	SOCKET server_socket;
	SOCKET client_socket;
	BLUETOOTH_DEVICE_SEARCH_PARAMS BluetoothSearchParams;
	BLUETOOTH_DEVICE_INFO BluetoothDeviceInfo;
	HBLUETOOTH_DEVICE_FIND hBluetoothDevice;
	int btclientsize;
	int rError;

	if(WSAStartup(MAKEWORD(1,0), &wsd) != 0){
		printf("Unable to load Winsock! Error code is %d\n", WSAGetLastError());
		while(1);
	};

	memset (&btconn, 0, sizeof(btconn));
	btconn.addressFamily = AF_BTH;
	btconn.port = BT_PORT_ANY;
	btclientsize = sizeof(btclient);

	server_socket = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
	if(server_socket == INVALID_SOCKET){
		rError = WSAGetLastError();
		printf("socket error: %d", rError);
		while(1);
	}	

...

Is there anyone who can help solve this?
Thanks!

It could be due to your WSAStartup() call. You are requesting version 1 of the winsock protocol, but bluetooth is in version 2. Try changing the call to:

Code:

if(WSAStartup(MAKEWORD(2,2), &wsd) != 0){

Thanks,

I made the change, but I'm still getting the same error.

Hmm... I can't really help you then. A quick search on the internet seems to indicate that error means there is an issue with the SDK working with your hardware.

Maybe the socket type can't be streaming, try SOCK_DGRAM and report back if it complains no error.

The documentation says:

To create a Bluetooth socket, use: type = SOCK_STREAM

I still get the same error using SOCK_DGRAM.