[Minor] Add probabilistic reset of errors in upstream addrs

diff --git a/src/libutil/upstream.c b/src/libutil/upstream.c
index fa1c75286905f9a95028c6aa000ab2a6d97ddc25..5d421b212c9af51156e2c9ef46d79f5ec28d4d3e 100644 (file)
--- a/src/libutil/upstream.c
+++ b/src/libutil/upstream.c
@@ -236,7 +236,7 @@ static void
 rspamd_upstream_update_addrs (struct upstream *up)
 {
        guint addr_cnt, i, port;
-       gboolean seen_addr;
+       gboolean seen_addr, reset_errors = FALSE;
        struct upstream_inet_addr_entry *cur, *tmp;
        GPtrArray *new_addrs;
        struct upstream_addr_elt *addr_elt, *naddr;
@@ -257,6 +257,11 @@ rspamd_upstream_update_addrs (struct upstream *up)
                        addr_cnt++;
                }
 
+               /* At 10% probability reset errors on addr elements */
+               if (rspamd_random_double_fast () > 0.9) {
+                       reset_errors = TRUE;
+               }
+
                new_addrs = g_ptr_array_new_full (addr_cnt, rspamd_upstream_addr_elt_dtor);
 
                /* Copy addrs back */
@@ -270,7 +275,7 @@ rspamd_upstream_update_addrs (struct upstream *up)
                                if (rspamd_inet_address_compare (addr_elt->addr, cur->addr) == 0) {
                                        naddr = g_malloc0 (sizeof (*addr_elt));
                                        naddr->addr = cur->addr;
-                                       naddr->errors = addr_elt->errors; /* Preserve errors */
+                                       naddr->errors = reset_errors ? 0 : addr_elt->errors;
                                        seen_addr = TRUE;
 
                                        break;