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123 lines
2.5 KiB
Plaintext
123 lines
2.5 KiB
Plaintext
; This is a comment.
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; config options go here.
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; extremely small cache to force dropping old records.
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server:
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msg-cache-size: 1 # one whole byte!
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msg-cache-slabs: 1
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forward-zone: name: "." forward-addr: 216.0.0.1
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CONFIG_END
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SCENARIO_BEGIN Old answer is dropped from the cache
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STEP 1 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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; the query is sent to the forwarder - no cache yet.
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STEP 2 CHECK_OUT_QUERY
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ENTRY_BEGIN
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MATCH qname qtype opcode
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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 3 REPLY
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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 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. IN A 10.20.30.40
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SECTION AUTHORITY
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www.example.com. IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. IN A 10.20.30.50
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ENTRY_END
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STEP 4 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH opcode qname qtype
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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. IN A 10.20.30.40
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ENTRY_END
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; another query to force the cache to drop the example.com entry.
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STEP 11 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.net. IN A
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ENTRY_END
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; the query is sent to the forwarder - no cache yet.
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STEP 12 CHECK_OUT_QUERY
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ENTRY_BEGIN
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MATCH qname qtype opcode
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SECTION QUESTION
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www.example.net. IN A
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ENTRY_END
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STEP 13 REPLY
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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 RD RA NOERROR
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SECTION QUESTION
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www.example.net. IN A
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SECTION ANSWER
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www.example.net. IN A 10.20.30.40
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SECTION AUTHORITY
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www.example.net. IN NS ns.example.net.
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SECTION ADDITIONAL
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ns.example.net. IN A 10.20.30.50
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ENTRY_END
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STEP 14 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH opcode qname qtype
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SECTION QUESTION
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www.example.net. IN A
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SECTION ANSWER
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www.example.net. IN A 10.20.30.40
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ENTRY_END
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; query, same as first, but it fell out of the cache.
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STEP 21 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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STEP 22 CHECK_OUT_QUERY
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ENTRY_BEGIN
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MATCH qname qtype opcode
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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 23 REPLY
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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 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. IN A 10.20.30.40
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SECTION AUTHORITY
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www.example.com. IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. IN A 10.20.30.50
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ENTRY_END
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STEP 24 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH opcode qname qtype
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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. IN A 10.20.30.40
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ENTRY_END
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SCENARIO_END
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