本文介绍了为什么golang Lookup*** 函数不能提供服务器参数?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
对于nslookup
命令,它有nslookup where some.dns.server
.
然而,似乎golang dnsclient 只从/etc/resolv.conf
However, it seems that golang dnsclient only load config from /etc/resolv.conf
代码在这里:https://golang/src/net/dnsclient_unix.go#L225
golang 标准库是否提供类似的东西func LookupTXT(name string, dnsServer string) (txt []string, err error)
?
Does the golang standard library provide something like
func LookupTXT(name string, dnsServer string) (txt []string, err error)
?
要求
:1.不要改变默认的/etc/resolv.conf
.
requirement
:
1. Don't change the default /etc/resolv.conf
.
推荐答案
@holys
github/miekg/dns 对我来说太重了"
"github/miekg/dns is too heavy for me"
没那么重:
package main
import (
"log"
"github/miekg/dns"
)
func main() {
target := "microsoft"
server := "8.8.8.8"
c := dns.Client{}
m := dns.Msg{}
m.SetQuestion(target+".", dns.TypeA)
r, t, err := c.Exchange(&m, server+":53")
if err != nil {
log.Fatal(err)
}
log.Printf("Took %v", t)
if len(r.Answer) == 0 {
log.Fatal("No results")
}
for _, ans := range r.Answer {
Arecord := ans.(*dns.A)
log.Printf("%s", Arecord.A)
}
}
运行时,您应该看到:
$ go run dns.go
2015/07/26 00:24:46 Took 16.138928ms
2015/07/26 00:24:46 134.170.188.221
2015/07/26 00:24:46 134.170.185.46
这篇关于为什么golang Lookup*** 函数不能提供服务器参数?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
更多推荐
[db:关键词]
发布评论