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Test and fix.

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git-svn-id: file:///svn/unbound/trunk@4583 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards
2018-03-13 13:14:56 +00:00
parent d111aaf64f
commit 3a287a70cd
2 changed files with 86 additions and 1 deletions
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services/cache/dns.c
Vendored
+1 -1
View File
@@ -135,7 +135,7 @@ msg_del_servfail(struct module_env* env, struct query_info* qinfo,
* lookups move from the cacheresponse stage to the recursionresponse
* stage */
e = msg_cache_lookup(env, qinfo->qname, qinfo->qname_len,
qinfo->qtype, qinfo->qclass, flags, *env->now, 0);
qinfo->qtype, qinfo->qclass, flags, 0, 0);
if(!e) return;
/* we don't check for the ttl here, also expired servfail entries
* are removed. If the user uses serve-expired, they would still be
testdata/fwd_0ttlservfail.rpl
Vendored
+85
View File
@@ -0,0 +1,85 @@
; This is a comment.
; config options go here.
server:
serve-expired: yes
forward-zone: name: "." forward-addr: 216.0.0.1
CONFIG_END
SCENARIO_BEGIN Zero ttl answer needs to override servfail in cache.
RANGE_BEGIN 0 100
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR RD RA SERVFAIL
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
ENTRY_END
RANGE_END
RANGE_BEGIN 200 300
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 0 IN A 10.20.30.40
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 10 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
ENTRY_END
; enough to pass by the TTL of the servfail answer in cache
STEP 50 TIME_PASSES ELAPSE 40
; this query triggers a prefetch
STEP 210 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 220 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
ENTRY_END
; this query gets the 0ttl answer
STEP 230 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 240 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 0 IN A 10.20.30.40
ENTRY_END
SCENARIO_END