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Log the deferral reason when no handler answers and keep one logrus test hook

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This commit is contained in:
Viktor Liu
2026-07-27 11:57:59 +02:00
parent 4546908ceb
commit f7af852851
3 changed files with 22 additions and 10 deletions
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client/internal/dns/handler_chain.go
+5 -2
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@@ -367,8 +367,11 @@ func (c *HandlerChain) dispatch(w dns.ResponseWriter, r *dns.Msg, maxPriority in
resutil.AttachEDE(resp, resutil.EDENetbirdSoftenedNegative,
"netbird: name is served locally, no fallthrough resolver for this query type")
}
logger.Tracef("no handler below the deferring one for domain=%s type=%s, answering NODATA",
qname, dns.TypeToString[question.Qtype])
// logResponse never runs on this path, so the carried metadata is
// appended here or the reason for the deferral is lost in exactly the
// case that is hardest to diagnose.
logger.Tracef("no handler below the deferring one for domain=%s type=%s, answering NODATA%s",
qname, dns.TypeToString[question.Qtype], carried.format())
}
if err := w.WriteMsg(resp); err != nil {
logger.Errorf("failed to write DNS response: %v", err)