; config options server: target-fetch-policy: "0 0 0 0 0" qname-minimisation: no minimal-responses: no serve-expired: yes serve-expired-client-timeout: 0 serve-expired-reply-ttl: 30 module-config: "cachedb iterator" 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 and serve-expired-reply-ttl. ; 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.example.com. ENTRY_END RANGE_END ; ns2.example.com. RANGE_BEGIN 0 400 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 ENTRY_BEGIN MATCH opcode qname qtype REPLY QR AA NOERROR SECTION QUESTION www2.example.com. IN A SECTION ANSWER www2.example.com. 10 IN A 1.2.3.5 ENTRY_END RANGE_END ; make time not 0 STEP 2 TIME_PASSES ELAPSE 212 ; Get an entry in cache, to make it expired. 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 ; Get another query in cache to make it expired. STEP 20 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www2.example.com. IN A ENTRY_END ; get the answer for it STEP 30 CHECK_ANSWER ENTRY_BEGIN MATCH all REPLY QR RD RA NOERROR SECTION QUESTION www2.example.com. IN A SECTION ANSWER www2.example.com. 10 IN A 1.2.3.5 ENTRY_END ; it is now expired STEP 40 TIME_PASSES ELAPSE 20 ; cache is expired, and cachedb is expired. STEP 50 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www2.example.com. IN A ENTRY_END STEP 60 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www2.example.com. IN A SECTION ANSWER www2.example.com. 30 IN A 1.2.3.5 ENTRY_END ; got an answer from upstream STEP 61 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www2.example.com. IN A ENTRY_END STEP 62 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www2.example.com. IN A SECTION ANSWER www2.example.com. 10 IN A 1.2.3.5 ENTRY_END ; cache is expired, cachedb has no answer STEP 70 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END STEP 80 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl 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 STEP 90 TRAFFIC ; the entry should be refreshed in cache now. ; cache is valid and cachedb is valid. STEP 100 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END STEP 110 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl 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 ; make both cache and cachedb expired. STEP 120 TIME_PASSES ELAPSE 20 STEP 130 FLUSH_MESSAGE www.example.com. IN A ; cache has no entry and cachedb is expired. STEP 140 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END STEP 150 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl 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 ; the name is resolved STEP 160 TRAFFIC ; the resolve name has been updated. STEP 170 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END STEP 180 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl 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 SCENARIO_END