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middleware/cache: don't cache expired RRSIGs (#641)

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Check message for expired sig and don't cache those.

Aside: This hack of caching entire messages is probably something we
should stop doing at some point in the future and do this on a per RRset
basis.

Fixes #367 #635
This commit is contained in:
Miek Gieben
2017-04-29 15:06:42 +01:00
committed by Yong Tang
parent 1f63e639e4
commit 7d39c2ba51
7 changed files with 172 additions and 62 deletions
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3
middleware/log/log.go
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@@ -52,7 +52,8 @@ func (l Logger) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg)
rc = 0
}
class, _ := response.Classify(rrw.Msg)
tpe, _ := response.Typify(rrw.Msg, time.Now().UTC())
class := response.Classify(tpe)
if rule.Class == response.All || rule.Class == class {
rep := replacer.New(r, rrw, CommonLogEmptyValue)
rule.Log.Println(rep.Replace(rule.Format))