int bufferevent_socket_connect_hostname(struct bufferevent *bev, struct evdns_base *evdns_base, int family, const char *hostname, int port) { char portbuf[10]; struct evutil_addrinfo hint; int err; if (family != AF_INET && family != AF_INET6 && family != AF_UNSPEC) return -1; if (port < 1 || port > 65535) return -1; evutil_snprintf(portbuf, sizeof(portbuf), "%d", port); memset(&hint, 0, sizeof(hint)); hint.ai_family = family; hint.ai_protocol = IPPROTO_TCP; hint.ai_socktype = SOCK_STREAM; bufferevent_suspend_write(bev, BEV_SUSPEND_LOOKUP); bufferevent_suspend_read(bev, BEV_SUSPEND_LOOKUP); bufferevent_incref(bev); err = evutil_getaddrinfo_async(evdns_base, hostname, portbuf, &hint, bufferevent_connect_getaddrinfo_cb, bev); if (err == 0) { return 0; } else { bufferevent_unsuspend_write(bev, BEV_SUSPEND_LOOKUP); bufferevent_unsuspend_read(bev, BEV_SUSPEND_LOOKUP); return -1; } }
static void bufferevent_connect_getaddrinfo_cb(int result, struct evutil_addrinfo *ai, void *arg) { struct bufferevent *bev = arg; struct bufferevent_private *bev_p = EVUTIL_UPCAST(bev, struct bufferevent_private, bev); int r; BEV_LOCK(bev); bufferevent_unsuspend_write(bev, BEV_SUSPEND_LOOKUP); bufferevent_unsuspend_read(bev, BEV_SUSPEND_LOOKUP); if (result != 0) { bev_p->dns_error = result; _bufferevent_run_eventcb(bev, BEV_EVENT_ERROR); _bufferevent_decref_and_unlock(bev); if (ai) evutil_freeaddrinfo(ai); return; } /* XXX use the other addrinfos? */ /* XXX use this return value */ r = bufferevent_socket_connect(bev, ai->ai_addr, (int)ai->ai_addrlen); (void)r; _bufferevent_decref_and_unlock(bev); evutil_freeaddrinfo(ai); }
static void bufferevent_connect_getaddrinfo_cb(int result, struct evutil_addrinfo *ai, void *arg) { struct bufferevent *bev = arg; int r; BEV_LOCK(bev); bufferevent_unsuspend_write(bev, BEV_SUSPEND_LOOKUP); bufferevent_unsuspend_read(bev, BEV_SUSPEND_LOOKUP); if (result != 0) { /* XXX Communicate the error somehow. */ _bufferevent_run_eventcb(bev, BEV_EVENT_ERROR); _bufferevent_decref_and_unlock(bev); if (ai) evutil_freeaddrinfo(ai); return; } /* XXX use the other addrinfos? */ r = bufferevent_socket_connect(bev, ai->ai_addr, ai->ai_addrlen); _bufferevent_decref_and_unlock(bev); evutil_freeaddrinfo(ai); }