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only cache successful lookups

This commit is contained in:
bigeagle 2015-02-03 23:20:36 +08:00
parent 0728359489
commit b3b3939122
1 changed files with 1 additions and 1 deletions
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2
handler.go
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@ -136,7 +136,7 @@ func (h *GODNSHandler) do(Net string, w dns.ResponseWriter, req *dns.Msg) {
w.WriteMsg(mesg)
if IPQuery > 0 {
if IPQuery > 0 && len(mesg.Answer) > 0 {
err = h.cache.Set(key, mesg)
if err != nil {