+int sockconn(char *host, char *serv, int prot, int type)
+{
+ struct addrinfo hint, *addr, *save;
+ int res;
+ int sock;
+ memset(&hint, 0, sizeof(struct addrinfo));
+ hint.ai_family = PF_UNSPEC; /* generic address (IPv4 or IPv6) */
+ hint.ai_protocol = prot; /* protocol */
+ hint.ai_socktype = type; /* socket type */
+ res = getaddrinfo(host, serv, &hint, &addr); /* calling getaddrinfo */
+ if (res != 0) { /* on error exit */
+ fprintf(stderr, "sockconn: resolution failed:");
+ fprintf(stderr, " %s\n", gai_strerror(res));
+ errno = 0; /* clear errno */
+ return -1;
+ }
+ save = addr;
+ while (addr != NULL) { /* loop on possible addresses */
+ sock = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+ if (sock < 0) { /* on error */
+ if (addr->ai_next != NULL) { /* if other addresses */
+ addr=addr->ai_next; /* take next */
+ continue; /* restart cycle */
+ } else { /* else stop */
+ perror("sockconn: cannot create socket");
+ return sock;
+ }
+ }
+ if ( (res = connect(sock, addr->ai_addr, addr->ai_addrlen) < 0)) {
+ if (addr->ai_next != NULL) { /* if other addresses */
+ addr=addr->ai_next; /* take next */
+ close(sock); /* close socket */
+ continue; /* restart cycle */
+ } else { /* else stop */
+ perror("sockconn: cannot connect");
+ close(sock);
+ return res;
+ }
+ } else break; /* ok, we are connected! */
+ }
+ freeaddrinfo(save); /* done, release memory */
+ return sock;
+}