else *servername = strdup("");
else { struct in_addr addr; addr.s_addr = serverNumber;  *servername = strdup(inet_ntoa(addr)); }
arlalib_getservername(u_int32_t serverNumber, char **servername){    struct hostent *he;    he = gethostbyaddr((char*) &serverNumber, sizeof(serverNumber), AF_INET);    if (he != NULL)	*servername = strdup(he->h_name);    else 	*servername = strdup("");    return (*servername == NULL);}