mirror of
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25 lines
532 B
Go
25 lines
532 B
Go
package cache
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import "github.com/miekg/dns"
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// filterRRSlice filters out OPT RRs, and sets all RR TTLs to ttl.
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// If dup is true the RRs in rrs are _copied_ before adjusting their
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// TTL and the slice of copied RRs is returned.
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func filterRRSlice(rrs []dns.RR, ttl uint32, dup bool) []dns.RR {
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j := 0
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rs := make([]dns.RR, len(rrs))
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for _, r := range rrs {
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if r.Header().Rrtype == dns.TypeOPT {
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continue
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}
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if dup {
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rs[j] = dns.Copy(r)
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} else {
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rs[j] = r
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}
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rs[j].Header().Ttl = ttl
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j++
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}
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return rs[:j]
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}
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