Socket Function - Error 10047

This is a discussion on Socket Function - Error 10047 within the Windows Programming forums, part of the Platform Specific Boards category; I'm trying to open a socket for using bluetooth and I'm getting an error (10047: Address family not supported by ...

  1. #1
    amd
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    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!

  2. #2
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    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){

  3. #3
    amd
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    Thanks,

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

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    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.

  5. #5
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    Maybe the socket type can't be streaming, try SOCK_DGRAM and report back if it complains no error.
    Vanity of vanities, saith the Preacher, vanity of vanities; all is vanity.
    What profit hath a man of all his labour which he taketh under the sun?
    All the rivers run into the sea; yet the sea is not full; unto the place from whence the rivers come, thither they return again.
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  6. #6
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    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

  7. #7
    amd
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    I still get the same error using SOCK_DGRAM.

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