freeaddrinfo(res0);
return s;
}
+
+int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
+ int s, on = 1;
+ struct addrinfo *res;
+
+ for (res = addrinfo; res; res = res->ai_next) {
+ if (family != AF_UNSPEC && family != res->ai_family)
+ continue;
+ s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+ if (s < 0) {
+ debug(DBG_WARN, "bindtoaddr: socket failed");
+ continue;
+ }
+ if (reuse)
+ setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+ #ifdef IPV6_V6ONLY
+ if (v6only)
+ setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
+ #endif
+ if (!bind(s, res->ai_addr, res->ai_addrlen))
+ return s;
+ debug(DBG_WARN, "bindtoaddr: bind failed");
+ close(s);
+ }
+ return -1;
+}
+
+int connecttcp(struct addrinfo *addrinfo, struct addrinfo *src) {
+ int s;
+ struct addrinfo *res;
+
+ s = -1;
+ for (res = addrinfo; res; res = res->ai_next) {
+ s = bindtoaddr(src, res->ai_family, 1, 1);
+ if (s < 0) {
+ debug(DBG_WARN, "connecttoserver: socket failed");
+ continue;
+ }
+ if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
+ break;
+ debug(DBG_WARN, "connecttoserver: connect failed");
+ close(s);
+ s = -1;
+ }
+ return s;
+}