本文整理汇总了Golang中dns.Client.DoRtt方法的典型用法代码示例。如果您正苦于以下问题：Golang Client.DoRtt方法的具体用法？Golang Client.DoRtt怎么用？Golang Client.DoRtt使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类dns.Client的用法示例。
在下文中一共展示了Client.DoRtt方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: main
//.........这里部分代码省略.........
e.Code = dns.EDNS0NSID
o.Option = append(o.Option, e)
// NSD will not return nsid when the udp message size is too small
o.SetUDPSize(dns.DefaultMsgSize)
}
if *client != "" {
e := new(dns.EDNS0_SUBNET)
e.Code = dns.EDNS0SUBNET
e.SourceScope = 0
e.Address = net.ParseIP(*client)
if e.Address == nil {
fmt.Fprintf(os.Stderr, "Failure to parse IP address: %s\n", *client)
return
}
e.Family = 1 // IP4
e.SourceNetmask = net.IPv4len * 8
if e.Address.To4() == nil {
e.Family = 2 // IP6
e.SourceNetmask = net.IPv6len * 8
}
o.Option = append(o.Option, e)
}
m.Extra = append(m.Extra, o)
}
for i, v := range qname {
m.Question[0] = dns.Question{v, qtype, qclass}
m.Id = dns.Id()
if *query {
fmt.Printf("%s", m.String())
fmt.Printf("\n;; size: %d bytes\n\n", m.Len())
}
// Add tsig
if *tsig != "" {
if algo, name, secret, ok := tsigKeyParse(*tsig); ok {
m.SetTsig(name, algo, 300, time.Now().Unix())
c.TsigSecret = map[string]string{name: secret}
} else {
fmt.Fprintf(os.Stderr, "tsig key data error\n")
return
}
}
c.DoRtt(m, nameserver, nil, func(m, r *dns.Msg, rtt time.Duration, e error, data interface{}) {
defer func() {
if i == len(qname)-1 {
os.Exit(0)
}
}()
Redo:
if r == nil {
return
}
if r.Rcode != dns.RcodeSuccess {
return
}
if r.Id != m.Id {
fmt.Printf("Id mismatch\n")
return
}
if r.MsgHdr.Truncated && *fallback {
if c.Net != "tcp" {
if !*dnssec {
fmt.Printf(";; Truncated, trying %d bytes bufsize\n", dns.DefaultMsgSize)
o := new(dns.RR_OPT)
o.Hdr.Name = "."
o.Hdr.Rrtype = dns.TypeOPT
o.SetUDPSize(dns.DefaultMsgSize)
m.Extra = append(m.Extra, o)
r, rtt, e = c.ExchangeRtt(m, nameserver)
*dnssec = true
goto Redo
} else {
// First EDNS, then TCP
fmt.Printf(";; Truncated, trying TCP\n")
c.Net = "tcp"
r, rtt, e = c.ExchangeRtt(m, nameserver)
goto Redo
}
}
}
if r.MsgHdr.Truncated && !*fallback {
fmt.Printf(";; Truncated\n")
}
if *check {
sigCheck(r, nameserver, *tcp)
nsecCheck(r)
//dns.AssertDelegationSigner(r.Reply, nil)
}
if *short {
r = shortMsg(r)
}
fmt.Printf("%v", r)
fmt.Printf("\n;; query time: %.3d µs, server: %s(%s), size: %d bytes\n", rtt/1e3, nameserver, c.Net, r.Size)
})
}
select {}
}