...
    extern "C" BOOL ( PASCAL * Real_ConnectEx)( SOCKET s, const struct sockaddr *name, int namelen, PVOID lpSendBuffer, DWORD dwSendDataLength, LPDWORD lpdwBytesSent, LPOVERLAPPED lpOverlapped ) = 0;

    BOOL PASCAL Detour_ConnectEx( SOCKET s, const struct sockaddr *name, int namelen, PVOID lpSendBuffer, DWORD dwSendDataLength, LPDWORD lpdwBytesSent, LPOVERLAPPED lpOverlapped )
    {
        char buffer[1024] = { 0 };
        memcpy( buffer, name, namelen );
        LogDestination( name );
        if( ShouldDetour( name, (sockaddr *)buffer ) )
        {
            return Real_ConnectEx( s, (sockaddr *)buffer, namelen, lpSendBuffer, dwSendDataLength, lpdwBytesSent, lpOverlapped );
        }
        return Real_ConnectEx( s, name, namelen, lpSendBuffer, dwSendDataLength, lpdwBytesSent, lpOverlapped );
    }

    void LoadConnectEx()
    {
        WSADATA wsaData = { 0 };
        WSAStartup( MAKEWORD( 2, 2 ), &wsaData );

        DWORD dwBytes = 0;
        SOCKET s = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
        if( SOCKET_ERROR != s )
        {
            if( SOCKET_ERROR != WSAIoctl( s, SIO_GET_EXTENSION_FUNCTION_POINTER, &GuidConnectEx, sizeof( GuidConnectEx ), &lpfnConnectEx, sizeof(lpfnConnectEx), &dwBytes, NULL, NULL ) )
            {
                Real_ConnectEx = lpfnConnectEx;
                printf( "Real_ConnectEx = %x\n", lpfnConnectEx );
            }
            else
            {
                printf( "WSAIoctl failed\n" );
            }
        }
        else
        {
            printf( "socket failed\n" );
        }

        WSACleanup();
    }

...

void User_Initialize()
{
    nsDetours::LoadConnectEx();

    DetourRestoreAfterWith();
    DetourTransactionBegin();
    DetourUpdateThread( GetCurrentThread() );

    DetourAttach( &(PVOID&)nsDetours::Real_ConnectEx, nsDetours::Detour_ConnectEx ); // RoM uses ConnectEx on winxp+

    DetourTransactionCommit();
}

...