Saleh b0b317fdd6 plugin/dnstap: tap deferred error responses (#8549) ...

When the plugin chain returns an error rcode without writing a response
(it falls off the end, or returns SERVFAIL/REFUSED/FORMERR/NOTIMP), the
server generates and sends the error to the client after dnstap's ServeDNS
returns, so ResponseWriter.WriteMsg is never called and no CLIENT_RESPONSE
dnstap message is emitted. dnstap consumers then see a CLIENT_QUERY with no
matching CLIENT_RESPONSE.

Synthesize the deferred response and tap it as a CLIENT_RESPONSE, mirroring
the deferred-response handling already added to plugin/log.

Fixes #6532

Signed-off-by: Saleh <root@lr0.org>

2026-09-14 17:25:11 -07:00

1.3 KiB

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