Add jitter for upstream reviving.

diff --git a/src/libutil/upstream.c b/src/libutil/upstream.c
index 070ff3858a2d0b2542c6f873bb1b031f15278195..b4d341daca84f0d1f56b4f2d66dc3637a960e834 100644 (file)
--- a/src/libutil/upstream.c
+++ b/src/libutil/upstream.c
@@ -70,6 +70,7 @@ static struct event_base *ev_base = NULL;
 /* 4 errors in 10 seconds */
 const guint default_max_errors = 4;
 const guint default_revive_time = 60;
+const gdouble default_revive_jitter = 0.4;
 const guint default_error_time = 10;
 const gdouble default_dns_timeout = 1.0;
 const guint default_dns_retransmits = 2;
@@ -210,7 +211,9 @@ rspamd_upstream_set_inactive (struct upstream_list *ls, struct upstream *up)
        if (ev_base != NULL) {
                event_base_set (ev_base, &up->ev);
        }
-       up->tv.tv_sec = default_revive_time;
+
+       up->tv.tv_sec = default_revive_time + ottery_rand_range (
+                       default_revive_time * default_revive_jitter);
        up->tv.tv_usec = 0;
        event_add (&up->ev, &up->tv);