4 #define FLX_ANNOUNCEMENT_JITTER_MSEC 250
5 #define FLX_PROBE_JITTER_MSEC 250
6 #define FLX_PROBE_INTERVAL_MSEC 250
8 static void remove_announcement(flxServer *s, flxAnnouncement *a) {
13 flx_time_event_queue_remove(s->time_event_queue, a->time_event);
15 FLX_LLIST_REMOVE(flxAnnouncement, by_interface, a->interface->announcements, a);
16 FLX_LLIST_REMOVE(flxAnnouncement, by_entry, a->entry->announcements, a);
21 static void elapse_announce(flxTimeEvent *e, void *userdata);
23 static void set_timeout(flxAnnouncement *a, const GTimeVal *tv) {
28 flx_time_event_queue_remove(a->server->time_event_queue, a->time_event);
34 flx_time_event_queue_update(a->server->time_event_queue, a->time_event, tv);
36 a->time_event = flx_time_event_queue_add(a->server->time_event_queue, tv, elapse_announce, a);
40 static void next_state(flxAnnouncement *a);
42 void flx_entry_group_check_probed(flxEntryGroup *g, gboolean immediately) {
47 /* Check whether all group members have been probed */
49 if (g->state != FLX_ENTRY_GROUP_REGISTERING || g->n_probing > 0)
52 flx_entry_group_change_state(g, FLX_ENTRY_GROUP_ESTABLISHED);
57 for (e = g->entries; e; e = e->entries_next) {
60 for (a = e->announcements; a; a = a->by_entry_next) {
62 if (a->state != FLX_WAITING)
65 a->state = FLX_ANNOUNCING;
75 flx_elapse_time(&tv, 0, FLX_ANNOUNCEMENT_JITTER_MSEC);
82 static void next_state(flxAnnouncement *a) {
85 g_message("%i -- %u", a->state, a->n_iteration);
87 if (a->state == FLX_WAITING) {
89 g_assert(a->entry->group);
91 flx_entry_group_check_probed(a->entry->group, TRUE);
93 } else if (a->state == FLX_PROBING) {
95 if (a->n_iteration >= 4) {
100 g_message("Enough probes for record [%s]", t = flx_record_to_string(a->entry->record));
103 if (a->entry->group) {
104 g_assert(a->entry->group->n_probing);
105 a->entry->group->n_probing--;
108 if (a->entry->group && a->entry->group->state == FLX_ENTRY_GROUP_REGISTERING)
109 a->state = FLX_WAITING;
111 a->state = FLX_ANNOUNCING;
115 set_timeout(a, NULL);
120 flx_interface_post_probe(a->interface, a->entry->record, FALSE);
122 flx_elapse_time(&tv, FLX_PROBE_INTERVAL_MSEC, 0);
128 } else if (a->state == FLX_ANNOUNCING) {
130 flx_interface_post_response(a->interface, NULL, a->entry->record, a->entry->flags & FLX_ENTRY_UNIQUE, FALSE);
132 if (++a->n_iteration >= 4) {
134 /* Announcing done */
136 g_message("Enough announcements for record [%s]", t = flx_record_to_string(a->entry->record));
139 a->state = FLX_ESTABLISHED;
141 set_timeout(a, NULL);
144 flx_elapse_time(&tv, a->sec_delay*1000, FLX_ANNOUNCEMENT_JITTER_MSEC);
146 if (a->n_iteration < 10)
154 static void elapse_announce(flxTimeEvent *e, void *userdata) {
157 next_state(userdata);
160 flxAnnouncement *flx_get_announcement(flxServer *s, flxEntry *e, flxInterface *i) {
167 for (a = e->announcements; a; a = a->by_entry_next)
168 if (a->interface == i)
174 static void new_announcement(flxServer *s, flxInterface *i, flxEntry *e) {
184 /* g_message("NEW ANNOUNCEMENT: %s.%i [%s]", i->hardware->name, i->protocol, t = flx_record_to_string(e->record)); */
187 if (!flx_interface_match(i, e->interface, e->protocol) || !i->announcing || !flx_entry_commited(e))
190 /* We don't want duplicate announcements */
191 if (flx_get_announcement(s, e, i))
194 a = g_new(flxAnnouncement, 1);
199 if ((e->flags & FLX_ENTRY_UNIQUE) && !(e->flags & FLX_ENTRY_NOPROBE))
200 a->state = FLX_PROBING;
201 else if (!(e->flags & FLX_ENTRY_NOANNOUNCE)) {
203 if (!e->group || e->group->state == FLX_ENTRY_GROUP_ESTABLISHED)
204 a->state = FLX_ANNOUNCING;
206 a->state = FLX_WAITING;
209 a->state = FLX_ESTABLISHED;
212 g_message("New announcement on interface %s.%i for entry [%s] state=%i", i->hardware->name, i->protocol, t = flx_record_to_string(e->record), a->state);
217 a->time_event = NULL;
219 if (a->state == FLX_PROBING)
221 e->group->n_probing++;
223 FLX_LLIST_PREPEND(flxAnnouncement, by_interface, i->announcements, a);
224 FLX_LLIST_PREPEND(flxAnnouncement, by_entry, e->announcements, a);
226 if (a->state == FLX_PROBING) {
227 flx_elapse_time(&tv, 0, FLX_PROBE_JITTER_MSEC);
229 } else if (a->state == FLX_ANNOUNCING) {
230 flx_elapse_time(&tv, 0, FLX_ANNOUNCEMENT_JITTER_MSEC);
235 void flx_announce_interface(flxServer *s, flxInterface *i) {
244 for (e = s->entries; e; e = e->entries_next)
246 new_announcement(s, i, e);
249 static void announce_walk_callback(flxInterfaceMonitor *m, flxInterface *i, gpointer userdata) {
250 flxEntry *e = userdata;
257 new_announcement(m->server, i, e);
260 void flx_announce_entry(flxServer *s, flxEntry *e) {
265 flx_interface_monitor_walk(s->monitor, e->interface, e->protocol, announce_walk_callback, e);
268 void flx_announce_group(flxServer *s, flxEntryGroup *g) {
274 for (e = g->entries; e; e = e->by_group_next)
276 flx_announce_entry(s, e);
279 gboolean flx_entry_registered(flxServer *s, flxEntry *e, flxInterface *i) {
287 if (!(a = flx_get_announcement(s, e, i)))
290 return a->state == FLX_ANNOUNCING || a->state == FLX_ESTABLISHED;
293 gboolean flx_entry_registering(flxServer *s, flxEntry *e, flxInterface *i) {
301 if (!(a = flx_get_announcement(s, e, i)))
304 return a->state == FLX_PROBING || a->state == FLX_WAITING;
307 static flxRecord *make_goodbye_record(flxRecord *r) {
313 g_message("Preparing goodbye for record [%s]", t = flx_record_to_string(r));
316 g = flx_record_copy(r);
317 g_assert(g->ref == 1);
323 static void send_goodbye_callback(flxInterfaceMonitor *m, flxInterface *i, gpointer userdata) {
324 flxEntry *e = userdata;
332 if (!flx_interface_match(i, e->interface, e->protocol))
335 if (e->flags & FLX_ENTRY_NOANNOUNCE)
338 if (!flx_entry_registered(m->server, e, i))
341 g = make_goodbye_record(e->record);
342 flx_interface_post_response(i, NULL, g, e->flags & FLX_ENTRY_UNIQUE, TRUE);
346 void flx_goodbye_interface(flxServer *s, flxInterface *i, gboolean goodbye) {
350 g_message("goodbye interface: %s.%u", i->hardware->name, i->protocol);
352 if (goodbye && flx_interface_relevant(i)) {
355 for (e = s->entries; e; e = e->entries_next)
357 send_goodbye_callback(s->monitor, i, e);
360 while (i->announcements)
361 remove_announcement(s, i->announcements);
363 g_message("goodbye interface done: %s.%u", i->hardware->name, i->protocol);
367 void flx_goodbye_entry(flxServer *s, flxEntry *e, gboolean goodbye) {
371 g_message("goodbye entry: %p", e);
373 if (goodbye && !e->dead)
374 flx_interface_monitor_walk(s->monitor, 0, AF_UNSPEC, send_goodbye_callback, e);
376 while (e->announcements)
377 remove_announcement(s, e->announcements);
379 g_message("goodbye entry done: %p", e);
383 void flx_goodbye_all(flxServer *s, gboolean goodbye) {
388 g_message("goodbye all");
390 for (e = s->entries; e; e = e->entries_next)
392 flx_goodbye_entry(s, e, goodbye);
394 g_message("goodbye all done");