; config options
server:
	module-config: "validator iterator"
	qname-minimisation: "no"
	minimal-responses: no
	iter-scrub-promiscuous: no
	serve-expired: yes
	serve-expired-client-timeout: 0
	serve-expired-reply-ttl: 123
	ede: yes
	ede-serve-expired: yes


stub-zone:
	name: "example.com"
	stub-addr: 1.2.3.4
CONFIG_END

SCENARIO_BEGIN Test serve-expired with NXDOMAIN followed by 0 TTL
; Scenario overview:
; - query for 0ttl.example.com. IN A
; - answer from upstream is NODATA; will be cached for the SOA negative TTL.
; - check that the client gets the NODATA; also cached
; - query again right after the TTL expired
; - this time the server answers with a 0 TTL RRset
; - check that we get the correct answer

; ns.example.com.
RANGE_BEGIN 0 20
	ADDRESS 1.2.3.4
	; response to A query
	ENTRY_BEGIN
		MATCH opcode qtype qname
		ADJUST copy_id
		REPLY QR AA NOERROR
		SECTION QUESTION
			0ttl.example.com. IN A
		SECTION AUTHORITY
			example.com IN SOA ns.example.com dns.example.com 1 7200 3600 2419200 10
	ENTRY_END
RANGE_END

; ns.example.com.
RANGE_BEGIN 30 100
	ADDRESS 1.2.3.4
	ENTRY_BEGIN
		MATCH opcode qtype qname
		ADJUST copy_id
		REPLY QR NOERROR
		SECTION QUESTION
			example.com. IN NS
		SECTION ANSWER
			example.com. 200 IN NS ns.example.com.
		SECTION ADDITIONAL
			ns.example.com. 200 IN A 1.2.3.4
	ENTRY_END

	ENTRY_BEGIN
		MATCH opcode qtype qname
		ADJUST copy_id
		REPLY QR NOERROR
		SECTION QUESTION
			0ttl.example.com. IN A
		SECTION ANSWER
			0ttl.example.com. 0 IN A 5.6.7.8
		SECTION AUTHORITY
			example.com. 200 IN NS ns.example.com.
		SECTION ADDITIONAL
			ns.example.com. 200 IN A 1.2.3.4
	ENTRY_END
RANGE_END

; Query with RD flag
STEP 0 QUERY
ENTRY_BEGIN
	REPLY RD
	SECTION QUESTION
		0ttl.example.com. IN A
ENTRY_END

; Check that we get the NODATA (will be cached)
STEP 10 CHECK_ANSWER
ENTRY_BEGIN
	MATCH all
	REPLY QR RD RA NOERROR
	SECTION QUESTION
		0ttl.example.com. IN A
	SECTION AUTHORITY
		example.com IN SOA ns.example.com dns.example.com 1 7200 3600 2419200 10
ENTRY_END

; Query again
STEP 20 QUERY
ENTRY_BEGIN
	REPLY RD
	SECTION QUESTION
		0ttl.example.com. IN A
ENTRY_END

; Check that we get the cached NODATA
STEP 30 CHECK_ANSWER
ENTRY_BEGIN
	MATCH all
	REPLY QR RD RA NOERROR
	SECTION QUESTION
		0ttl.example.com. IN A
	SECTION AUTHORITY
		example.com IN SOA ns.example.com dns.example.com 1 7200 3600 2419200 10
ENTRY_END

; Wait for the NODATA to expire
STEP 31 TIME_PASSES ELAPSE 10

; Query again
STEP 40 QUERY
ENTRY_BEGIN
	REPLY RD DO
	SECTION QUESTION
		0ttl.example.com. IN A
ENTRY_END

; Check that we get the cached NODATA
STEP 50 CHECK_ANSWER
ENTRY_BEGIN
	MATCH all ede=3
	REPLY QR RD RA DO NOERROR
	SECTION QUESTION
		0ttl.example.com. IN A
	SECTION AUTHORITY
		example.com IN SOA ns.example.com dns.example.com 1 7200 3600 2419200 10
ENTRY_END

; Query again
STEP 60 QUERY
ENTRY_BEGIN
	REPLY RD
	SECTION QUESTION
		0ttl.example.com. IN A
ENTRY_END

; Check that we got the correct answer
STEP 70 CHECK_ANSWER
ENTRY_BEGIN
	MATCH all ttl
	REPLY QR RD RA NOERROR
	SECTION QUESTION
		0ttl.example.com. IN A
	SECTION ANSWER
		0ttl.example.com. 0 IN A 5.6.7.8
	SECTION AUTHORITY
		example.com. 200 IN NS ns.example.com.
	SECTION ADDITIONAL
		ns.example.com. 200 IN A 1.2.3.4
ENTRY_END

SCENARIO_END
