golang网络操作之ip

net包定义的IP类型为一个字节数组

type IP []byte

ParseIP(string)函数获取点号分割的IPV4或者磨耗分割的IPV6地址，比如127.0.0.1或者0:0:0:0:0:0:0:1

IP有string方法返回字符串

package main

import (

"fmt"

"net"

"os"

)

func main() {

if len(os.Args) != 2 {

fmt.Fprintf(os.Stderr, "Usage %s ip-addr\n", os.Args[0])

os.Exit(-1)

}

name := os.Args[1]

addr := net.ParseIP(name)

if addr == nil {

fmt.Println("Invalid address")

} else {

fmt.Println("The address is ", addr.String())

}

}