+
+ disable_DF_bit(s,res);
+
+ 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 connectnonblocking(int s, const struct sockaddr *addr, socklen_t addrlen, struct timeval *timeout) {
+ int origflags, error = 0, r = -1;
+ fd_set writefds;
+ socklen_t len;
+
+ origflags = fcntl(s, F_GETFL, 0);
+ fcntl(s, F_SETFL, origflags | O_NONBLOCK);
+ if (!connect(s, addr, addrlen)) {
+ r = 0;
+ goto exit;
+ }
+ if (errno != EINPROGRESS)
+ goto exit;
+
+ FD_ZERO(&writefds);
+ FD_SET(s, &writefds);
+ if (select(s + 1, NULL, &writefds, NULL, timeout) < 1)
+ goto exit;
+
+ len = sizeof(error);
+ if (!getsockopt(s, SOL_SOCKET, SO_ERROR, (char*)&error, &len) && !error)
+ r = 0;
+
+exit:
+ fcntl(s, F_SETFL, origflags);
+ return r;
+}
+
+int connecttcp(struct addrinfo *addrinfo, struct addrinfo *src, uint16_t timeout) {
+ int s;
+ struct addrinfo *res;
+ struct timeval to;
+
+ s = -1;
+ if (timeout) {
+ if (addrinfo && addrinfo->ai_next && timeout > 5)
+ timeout = 5;
+ to.tv_sec = timeout;
+ to.tv_usec = 0;
+ }
+
+ 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 ((timeout
+ ? connectnonblocking(s, res->ai_addr, res->ai_addrlen, &to)
+ : connect(s, res->ai_addr, res->ai_addrlen)) == 0)