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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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2
middleware/dnssec/dnssec.go
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@@ -41,7 +41,7 @@ func New(zones []string, keys []*DNSKEY, next middleware.Handler, cache *lru.Cac
func (d Dnssec) Sign(state request.Request, zone string, now time.Time) *dns.Msg {
req := state.Req
mt, _ := response.Typify(req) // TODO(miek): need opt record here?
mt, _ := response.Typify(req, time.Now().UTC()) // TODO(miek): need opt record here?
if mt == response.Delegation {
return req
}