如何获取当前机器的地址? [英] How to retrieve address of current machine?

问题描述

以下内容获取本地IP地址:

The following grabs the local IP addresses:

package main

import (
    "fmt"
    "net"
)

func main() {
    a, _ := net.LookupHost("localhost")
    fmt.Printf("Addresses: %#+v\n",a)
}

这是通常如何获取本地IP地址，根据需要手动过滤切片的方式吗?

Is this how you would normally get the local IP address, filtering the slice manually according to need?

推荐答案

这里是对原始代码段的快速而肮脏的修改

Here's a quick and dirty modification of a code snippet originally posted by Russ Cox to the golang-nuts google group:

package main

import (
  "fmt" 
  "net" 
  "os"  
)

func main() {
  tt, err := net.Interfaces()
  if err != nil { 
    panic(err)  
  }     
  for _, t := range tt {
    aa, err := t.Addrs()
    if err != nil {
      panic(err)        
    }           
    for _, a := range aa {
      ipnet, ok := a.(*net.IPNet) 
      if !ok {          
        continue                
      }                 
      v4 := ipnet.IP.To4() 
      if v4 == nil || v4[0] == 127 { // loopback address
        continue                
      }                 
      fmt.Printf("%v\n", v4)
    }           
    os.Exit(0)  
  }     
  os.Exit(1)

}

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