ipaddress.c

bool WinsockInitialized()
{
    SOCKET s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (s == INVALID_SOCKET && WSAGetLastError() == WSANOTINITIALISED){
        return false;
    }
    closesocket(s);
    return true;
}

int init_socket_library_if_needed()
{
	if( WinsockInitialized() == false)
	{
		WSAData wsa;
		int res =-1;
		res = WSAStartup(MAKEWORD(2,2), &wsa);
	    return res;
	}
	return 1;
}


void print_ip_address()
{
	struct IPv4
	{
	    unsigned char b1, b2, b3, b4;
	};
	IPv4 myIP;
	 char szBuffer[1024] ={'\0'};
	 if(gethostname(szBuffer, sizeof(szBuffer)) == SOCKET_ERROR)
	    {
	      #ifdef WIN32
	      WSACleanup();
	      #endif

	    }

	    struct hostent *host = gethostbyname(szBuffer);
	    if(host == NULL)
	    {
	      #ifdef WIN32
	      WSACleanup();
	      #endif

	    }

	    //Obtain the computer's IP
	    myIP.b1 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b1;
	    myIP.b2 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b2;
	    myIP.b3 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b3;
	    myIP.b4 = ((struct in_addr *)(host->h_addr))->S_un.S_un_b.s_b4;

	    cout <<" Waiting for Conection at : "<< (int)myIP.b1<<"."<<(int) myIP.b2<<"."<<(int)myIP.b3<<"."<<(int)myIP.b4<<endl;

}