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7c5e765b3b
subnet module deletes global cache and cachedb cache when it stores a result, and serve-expired is enabled, so that the global reply, that is older than the ecs reply, does not return after the ecs reply expires.
321 lines
6.4 KiB
Text
321 lines
6.4 KiB
Text
; config options
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server:
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target-fetch-policy: "0 0 0 0 0"
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qname-minimisation: no
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minimal-responses: no
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serve-expired: yes
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serve-expired-reply-ttl: 30
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; at least one second, so we can time skip past the timer in the
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; testbound script steps, but also reply within the time.
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serve-expired-client-timeout: 1200
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send-client-subnet: 1.2.3.4
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max-client-subnet-ipv4: 17
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; subnetcache is to the left of cachedb, because it sets no cache
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; store for edns subnet content for modules to the right of it.
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; this keeps subnet content out of cachedb as global content.
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module-config: "subnetcache cachedb iterator"
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cachedb:
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backend: "testframe"
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secret-seed: "testvalue"
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cachedb-check-when-serve-expired: yes
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stub-zone:
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name: "."
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stub-addr: 193.0.14.129
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CONFIG_END
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SCENARIO_BEGIN Test cachedb, subnet and serve-expired-client-timeout.
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; K.ROOT-SERVERS.NET.
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RANGE_BEGIN 0 400
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ADDRESS 193.0.14.129
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR NOERROR
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SECTION QUESTION
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. IN NS
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SECTION ANSWER
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. IN NS K.ROOT-SERVERS.NET.
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SECTION ADDITIONAL
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K.ROOT-SERVERS.NET. IN A 193.0.14.129
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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com. IN NS
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SECTION AUTHORITY
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com. IN NS a.gtld-servers.net.
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SECTION ADDITIONAL
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a.gtld-servers.net. IN A 192.5.6.30
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ENTRY_END
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RANGE_END
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; a.gtld-servers.net.
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RANGE_BEGIN 0 400
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ADDRESS 192.5.6.30
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN NS
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SECTION AUTHORITY
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example.com. IN NS ns2.example.com.
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SECTION ADDITIONAL
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ns2.example.com. IN A 1.2.3.5
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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foo.com. IN NS
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SECTION AUTHORITY
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foo.com. IN NS ns.foo.com.
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SECTION ADDITIONAL
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ns.foo.com. IN A 1.2.3.4
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ENTRY_END
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RANGE_END
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; ns2.example.com.
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RANGE_BEGIN 0 30
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ADDRESS 1.2.3.5
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ENTRY_BEGIN
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MATCH opcode qname qtype
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REPLY QR AA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN A 1.2.3.4
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ENTRY_END
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RANGE_END
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; ns2.example.com. - after change
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RANGE_BEGIN 40 100
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ADDRESS 1.2.3.5
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ENTRY_BEGIN
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MATCH opcode qname qtype
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REPLY QR AA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN CNAME example.foo.com.
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ENTRY_END
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RANGE_END
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; ns.foo.com.
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RANGE_BEGIN 40 100
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ADDRESS 1.2.3.4
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ENTRY_BEGIN
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MATCH opcode qname qtype ednsdata
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REPLY QR AA NOERROR
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SECTION QUESTION
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example.foo.com. IN A
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SECTION ANSWER
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example.foo.com. 10 IN A 1.2.3.5
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SECTION ADDITIONAL
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HEX_EDNSDATA_BEGIN
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; client is 127.0.0.1
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00 08 ; OPC
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00 07 ; option length
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00 01 ; Family
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11 00 ; source mask, scopemask
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7f 00 00 ; address
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HEX_EDNSDATA_END
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ENTRY_END
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RANGE_END
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; ns2.example.com. and ns.foo.com - no answer in 110-130.
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; ns2.example.com. - later
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RANGE_BEGIN 140 200
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ADDRESS 1.2.3.5
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ENTRY_BEGIN
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MATCH opcode qname qtype
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REPLY QR AA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN CNAME example.foo.com.
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ENTRY_END
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RANGE_END
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; ns.foo.com. - later
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RANGE_BEGIN 140 200
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ADDRESS 1.2.3.4
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ENTRY_BEGIN
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MATCH opcode qname qtype ednsdata
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REPLY QR AA NOERROR
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SECTION QUESTION
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example.foo.com. IN A
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SECTION ANSWER
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example.foo.com. 10 IN A 1.2.3.6
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SECTION ADDITIONAL
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HEX_EDNSDATA_BEGIN
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; client is 127.0.0.1
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00 08 ; OPC
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00 07 ; option length
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00 01 ; Family
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11 00 ; source mask, scopemask
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7f 00 00 ; address
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HEX_EDNSDATA_END
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ENTRY_END
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RANGE_END
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; make time not 0
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STEP 2 TIME_PASSES ELAPSE 212
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; Get an entry in cache.
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STEP 4 QUERY
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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; get the answer for it
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STEP 10 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN A 1.2.3.4
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ENTRY_END
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; now valid in cache and valid in cachedb, without subnet.
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STEP 20 FLUSH_MESSAGE www.example.com. IN A
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STEP 30 TIME_PASSES ELAPSE 20
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; now nothing in cache and cachedb has an expired entry.
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; the upstream is updated to CNAME to a subnet zone A record.
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STEP 40 QUERY ADDRESS 127.0.0.1
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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STEP 50 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN CNAME example.foo.com.
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example.foo.com. 10 IN A 1.2.3.5
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ENTRY_END
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; check that subnet has the query in cache.
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STEP 58 TIME_PASSES ELAPSE 2
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STEP 60 QUERY ADDRESS 127.0.0.1
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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STEP 70 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 8 IN CNAME example.foo.com.
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example.foo.com. 8 IN A 1.2.3.5
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ENTRY_END
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; everything is expired, cache, subnetcache and cachedb.
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STEP 80 TIME_PASSES ELAPSE 20
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; send the query, reply arrives quickly.
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STEP 90 QUERY ADDRESS 127.0.0.1
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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STEP 100 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN CNAME example.foo.com.
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example.foo.com. 10 IN A 1.2.3.5
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ENTRY_END
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; everything is expired, cache, subnetcache and cachedb.
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STEP 110 TIME_PASSES ELAPSE 20
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; send the query, but the reply is late, and there is expired data,
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; the expired entry from cachedb is used to reply with.
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STEP 120 QUERY ADDRESS 127.0.0.1
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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STEP 122 TIME_PASSES ELAPSE 2
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; But the entry has been deleted, so it cannot be served, the reply
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; at step 141 is returned instead.
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;STEP 130 CHECK_ANSWER
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;ENTRY_BEGIN
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;MATCH all
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;REPLY QR RD RA NOERROR
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;SECTION QUESTION
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;www.example.com. IN A
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;SECTION ANSWER
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;www.example.com. 30 IN A 1.2.3.4
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;ENTRY_END
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; reply can flow again.
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STEP 140 TRAFFIC
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STEP 141 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN CNAME example.foo.com.
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example.foo.com. 10 IN A 1.2.3.6
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ENTRY_END
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; see the entry now in cache, from the subnetcache.
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STEP 142 TIME_PASSES ELAPSE 2
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STEP 150 QUERY ADDRESS 127.0.0.1
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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STEP 160 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 8 IN CNAME example.foo.com.
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example.foo.com. 8 IN A 1.2.3.6
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ENTRY_END
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SCENARIO_END
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