char* HOST = argv[1];
     char* SERVICE = argv[2];
     char* KEY = argv[3];

     int port, n, sfd;
     struct hostent* phe;
     struct sockaddr_in sin;

     phe = gethostbyname(HOST);
     sscanf(SERVICE, "%d%n", &port, &n);

     sfd = socket(PF_INET, SOCK_STREAM, 0);

     sin.sin_family = AF_INET;
     sin.sin_port = htons(port);
     memcpy(&sin.sin_addr, phe->h_addr_list[0], sizeof(sin.sin_addr));

     connect(sfd, (struct sockaddr *)&sin, sizeof(sin));