Add a setMaxTTL() function
Will be useful to interprete HTTP cache headers in DoH
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@ -73,3 +73,21 @@ func getMinTTL(msg *dns.Msg, minTTL uint32, maxTTL uint32, negCacheMinTTL uint32
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}
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return time.Duration(ttl) * time.Second
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}
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func setMaxTTL(msg *dns.Msg, ttl uint32) {
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for _, rr := range msg.Answer {
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if ttl < rr.Header().Ttl {
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rr.Header().Ttl = ttl
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}
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}
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for _, rr := range msg.Ns {
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if ttl < rr.Header().Ttl {
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rr.Header().Ttl = ttl
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}
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}
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for _, rr := range msg.Extra {
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if ttl < rr.Header().Ttl {
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rr.Header().Ttl = ttl
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}
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}
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}
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