package main

import (
	"fmt"
	"net"
	"strings"
)

func main() {
	conn,err := net.Dial("udp","www.google.com.hk:80")
	if err != nil {
		fmt.Println(err.Error())
		return
	}
	defer conn.Close()
	fmt.Println(conn.LocalAddr().String())
	//fmt.Println(strings.Split(conn.LocalAddr().String(),":")[0])
}