Log standby retry transitions and await the actual wake phase

src/routing_layer/topo_group_connect.c

@@ -173,6 +173,8 @@ static void tgc_cancel_pause(struct TOPO_GROUP_CONNECT* gc) {
 static void tgc_resume(void* arg) {
     struct TOPO_GROUP_CONNECT* gc = arg;
     gc->pause_wait = NULL; gc->paused = 0;
+    DEBUG_INFO(DEBUG_CATEGORY_BGP, "group connect standby resumed: group=%016llx",
+               (unsigned long long)gc->group->group_id);
     topo_group_connect_changed(gc->group);
 }
 #endif
@@ -181,7 +183,12 @@ static int tgc_pause(struct TOPO_GROUP_CONNECT* gc) {
 #ifdef UTUN_HAVE_STANDBY
     if (standby_get_sleep_tb() > 0) {
         gc->pause_wait = standby_wait(gc, tgc_resume);
-        if (gc->pause_wait) { gc->paused = 1; return 1; }
+        if (gc->pause_wait) {
+            gc->paused = 1;
+            DEBUG_INFO(DEBUG_CATEGORY_BGP, "group connect standby wait: group=%016llx sleep_ms=%d",
+                       (unsigned long long)gc->group->group_id, standby_get_sleep_tb() / 10);
+            return 1;
+        }
         DEBUG_WARN(DEBUG_CATEGORY_BGP, "cannot wait for standby; using group retry timer");
     }
 #endif

tests/test_group_connect.c

@@ -244,7 +244,8 @@ static void standby_down(void) {
     while (!standby_get_sleep_tb()) uasync_poll(f.ua, 100);
     assert(topo_group_connect_init(f.group) == 0); poll_events(&f);
     assert(!peer(&f, 0) && !peer(&f, 1));
-    while (standby_get_sleep_tb()) uasync_poll(f.ua, 100);
+    /* Остаток SLEEP может обнулиться раньше доставки фазового callback. */
+    while (!standby_get_active_remaining_tb()) uasync_poll(f.ua, 100);
     poll_events(&f); assert(peer(&f, 0) && peer(&f, 1));
     assert(standby_set_enabled(f.inst, 0) == 0);
     destroy(&f);