avahi_elapse_time(&tv, 1000, 0);
r->time_event = avahi_time_event_queue_add(server->time_event_queue, &tv, time_event_callback, r);
avahi_elapse_time(&tv, 1000, 0);
r->time_event = avahi_time_event_queue_add(server->time_event_queue, &tv, time_event_callback, r);