从Go中的IP地址获取域名 [英] Get domain name from IP address in Go

问题描述

我正在尝试从IP地址中解析主机名，这显然比我想象的要好一些。

I'm trying to resolve the host name from an IP address, which is apparently proving to be a little more challenging than I thought it'd be.

我已经尝试使用了一些功能，包括 net.LookupHost 方法，但是它们似乎只是返回我输入的IP地址。

I've tried using a couple of functions, including the net.LookupHost method, but all of them seem to be just returning the IP address which I input.

这是我使用的代码：

package main

import (
    "fmt"
    "net"
)

func main() {
    // obtained from ping -c 1 stackoverflow.com, should print "stackoverflow.com"
    addr, err := net.LookupHost("198.252.206.16")
    fmt.Println(addr, err)
}

推荐答案

例如，

package main

import (
    "fmt"
    "net"
)

func main() {
    // obtained from ping -c 1 stackoverflow.com, should print "stackoverflow.com"
    addr, err := net.LookupAddr("198.252.206.16")
    fmt.Println(addr, err)
}

输出：

[stackoverflow.com.] <nil>

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