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fix bug 160914: try next server on empty answer recursion denied referral

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This commit is contained in:
jvdias 2005-07-07 19:06:57 +00:00
parent 5afcbdf40d
commit d9e5940295
1 changed files with 34 additions and 0 deletions
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34
bind-9.3.1-next_server_on_referral.patch Normal file
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@ -0,0 +1,34 @@
--- bind-9.3.1/bin/dig/dighost.c.next_server_on_referral 2005-07-07 13:19:29.000000000 -0400
+++ bind-9.3.1/bin/dig/dighost.c 2005-07-07 14:30:38.000000000 -0400
@@ -2765,7 +2765,15 @@
UNLOCK_LOOKUP;
return;
}
- if (msg->rcode == dns_rcode_servfail && !l->servfail_stops) {
+ if ( (!l->servfail_stops)
+ &&( (msg->rcode == dns_rcode_servfail)
+ ||( (msg->rcode == dns_rcode_noerror)
+ &&(msg->counts[DNS_SECTION_ANSWER] == 0)
+ &&((msg->flags & (DNS_MESSAGEFLAG_AA | DNS_MESSAGEFLAG_RA)) == 0)
+ )
+ )
+ )
+ {
dig_query_t *next = ISC_LIST_NEXT(query, link);
if (l->current_query == query)
l->current_query = NULL;
@@ -2783,9 +2791,11 @@
*/
if ((ISC_LIST_HEAD(l->q) != query) ||
(ISC_LIST_NEXT(query, link) != NULL)) {
- printf(";; Got SERVFAIL reply from %s, "
- "trying next server\n",
- query->servname);
+ if( l->comments == ISC_TRUE )
+ printf(";; Got %s reply from %s, "
+ "trying next server\n",
+ msg->rcode == dns_rcode_servfail ? "SERVFAIL" : "referral",
+ query->servname);
clear_query(query);
check_next_lookup(l);
dns_message_destroy(&msg);