pki/vendor/github.com/go-acme/lego/v4/challenge/dns01/cname.go

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2020-11-25 20:36:07 +01:00
package dns01
import "github.com/miekg/dns"
// Update FQDN with CNAME if any.
func updateDomainWithCName(r *dns.Msg, fqdn string) string {
for _, rr := range r.Answer {
if cn, ok := rr.(*dns.CNAME); ok {
if cn.Hdr.Name == fqdn {
return cn.Target
}
}
}
return fqdn
}