package net

import (
	"fmt"
	"io/ioutil"
	"net/http"
	"regexp"
)

// PublicIP 获取公网IP信息
func (n *NET) PublicIP() string {
	pip, err := http.Get("https://cip.cc")
	if err != nil {
		fmt.Println("获取IP地址错误: ", err)
		return ""
	}
	defer pip.Body.Close()
	content, _ := ioutil.ReadAll(pip.Body)
	extract := regexp.MustCompile("(\\d{1,3}\\.){3}\\d{1,3}")
	publicIP := extract.FindString(string(content))
	if publicIP != "" {
		return publicIP
	}
	return ""
}