41 lines
719 B
Go
41 lines
719 B
Go
package main
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import (
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"fmt"
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"github.com/miekg/dns"
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"time"
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)
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type Resolver struct {
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config *dns.ClientConfig
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}
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func (r *Resolver) Lookup(net string, req *dns.Msg) {
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c := &dns.Client{
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Net: net,
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ReadTimeout: r.Timeout(),
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WriteTimeout: r.Timeout(),
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}
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for _, nameserver := range r.Nameservers() {
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r, rtt, _ := c.Exchange(req, nameserver)
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fmt.Println(r)
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fmt.Println(rtt)
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}
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// r,rtt,_:c.Exchange(req, a)
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}
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func (r *Resolver) Nameservers() (ns []string) {
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for _, server := range r.config.Servers {
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nameserver := server + ":" + r.config.Port
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ns = append(ns, nameserver)
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}
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return
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}
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func (r *Resolver) Timeout() time.Duration {
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return time.Duration(r.config.Timeout) * time.Second
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}
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