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|
; config options
server:
target-fetch-policy: "0 0 0 0 0"
qname-minimisation: no
minimal-responses: no
serve-expired: yes
serve-expired-reply-ttl: 30
; at least one second, so we can time skip past the timer in the
; testbound script steps, but also reply within the time.
serve-expired-client-timeout: 1200
send-client-subnet: 1.2.3.4
max-client-subnet-ipv4: 17
; subnetcache is to the left of cachedb, because it sets no cache
; store for edns subnet content for modules to the right of it.
; this keeps subnet content out of cachedb as global content.
module-config: "subnetcache cachedb iterator"
discard-timeout: 3000
cachedb:
backend: "testframe"
secret-seed: "testvalue"
cachedb-check-when-serve-expired: yes
stub-zone:
name: "."
stub-addr: 193.0.14.129
CONFIG_END
SCENARIO_BEGIN Test cachedb, subnet and serve-expired-client-timeout.
; K.ROOT-SERVERS.NET.
RANGE_BEGIN 0 400
ADDRESS 193.0.14.129
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
. IN NS
SECTION ANSWER
. IN NS K.ROOT-SERVERS.NET.
SECTION ADDITIONAL
K.ROOT-SERVERS.NET. IN A 193.0.14.129
ENTRY_END
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
com. IN NS
SECTION AUTHORITY
com. IN NS a.gtld-servers.net.
SECTION ADDITIONAL
a.gtld-servers.net. IN A 192.5.6.30
ENTRY_END
RANGE_END
; a.gtld-servers.net.
RANGE_BEGIN 0 400
ADDRESS 192.5.6.30
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
example.com. IN NS
SECTION AUTHORITY
example.com. IN NS ns2.example.com.
SECTION ADDITIONAL
ns2.example.com. IN A 1.2.3.5
ENTRY_END
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
foo.com. IN NS
SECTION AUTHORITY
foo.com. IN NS ns.foo.com.
SECTION ADDITIONAL
ns.foo.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
; ns2.example.com.
RANGE_BEGIN 0 30
ADDRESS 1.2.3.5
ENTRY_BEGIN
MATCH opcode qname qtype
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN A 1.2.3.4
ENTRY_END
RANGE_END
; ns2.example.com. - after change
RANGE_BEGIN 40 100
ADDRESS 1.2.3.5
ENTRY_BEGIN
MATCH opcode qname qtype
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN CNAME example.foo.com.
ENTRY_END
RANGE_END
; ns.foo.com.
RANGE_BEGIN 40 100
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qname qtype ednsdata
REPLY QR AA NOERROR
SECTION QUESTION
example.foo.com. IN A
SECTION ANSWER
example.foo.com. 10 IN A 1.2.3.5
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.0.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
11 00 ; source mask, scopemask
7f 00 00 ; address
HEX_EDNSDATA_END
ENTRY_END
RANGE_END
; ns2.example.com. and ns.foo.com - no answer in 110-130.
; ns2.example.com. - later
RANGE_BEGIN 140 200
ADDRESS 1.2.3.5
ENTRY_BEGIN
MATCH opcode qname qtype
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN CNAME example.foo.com.
ENTRY_END
RANGE_END
; ns.foo.com. - later
RANGE_BEGIN 140 200
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qname qtype ednsdata
REPLY QR AA NOERROR
SECTION QUESTION
example.foo.com. IN A
SECTION ANSWER
example.foo.com. 10 IN A 1.2.3.6
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.0.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
11 00 ; source mask, scopemask
7f 00 00 ; address
HEX_EDNSDATA_END
ENTRY_END
RANGE_END
; make time not 0
STEP 2 TIME_PASSES ELAPSE 212
; Get an entry in cache.
STEP 4 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; get the answer for it
STEP 10 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN A 1.2.3.4
ENTRY_END
; now valid in cache and valid in cachedb, without subnet.
STEP 20 FLUSH_MESSAGE www.example.com. IN A
STEP 30 TIME_PASSES ELAPSE 20
; now nothing in cache and cachedb has an expired entry.
; the upstream is updated to CNAME to a subnet zone A record.
STEP 40 QUERY ADDRESS 127.0.0.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 50 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN CNAME example.foo.com.
example.foo.com. 10 IN A 1.2.3.5
ENTRY_END
; check that subnet has the query in cache.
STEP 58 TIME_PASSES ELAPSE 2
STEP 60 QUERY ADDRESS 127.0.0.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 70 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 8 IN CNAME example.foo.com.
example.foo.com. 8 IN A 1.2.3.5
ENTRY_END
; everything is expired, cache, subnetcache and cachedb.
STEP 80 TIME_PASSES ELAPSE 20
; send the query, reply arrives quickly.
STEP 90 QUERY ADDRESS 127.0.0.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 100 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN CNAME example.foo.com.
example.foo.com. 10 IN A 1.2.3.5
ENTRY_END
; everything is expired, cache, subnetcache and cachedb.
STEP 110 TIME_PASSES ELAPSE 20
; send the query, but the reply is late, and there is expired data,
; the expired entry from cachedb is used to reply with.
STEP 120 QUERY ADDRESS 127.0.0.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 122 TIME_PASSES ELAPSE 2
; But the entry has been deleted, so it cannot be served, the reply
; at step 141 is returned instead.
;STEP 130 CHECK_ANSWER
;ENTRY_BEGIN
;MATCH all
;REPLY QR RD RA NOERROR
;SECTION QUESTION
;www.example.com. IN A
;SECTION ANSWER
;www.example.com. 30 IN A 1.2.3.4
;ENTRY_END
; reply can flow again.
STEP 140 TRAFFIC
STEP 141 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 10 IN CNAME example.foo.com.
example.foo.com. 10 IN A 1.2.3.6
ENTRY_END
; see the entry now in cache, from the subnetcache.
STEP 142 TIME_PASSES ELAPSE 2
STEP 150 QUERY ADDRESS 127.0.0.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 160 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 8 IN CNAME example.foo.com.
example.foo.com. 8 IN A 1.2.3.6
ENTRY_END
SCENARIO_END
|
