Tor from Golang

tor.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"net/http"

	"golang.org/x/net/proxy"
)

func main() {
	// Create a socks5 dialer
	dialer, err := proxy.SOCKS5("tcp", "127.0.0.1:9050", nil, proxy.Direct)
	if err != nil {
		log.Fatal(err)
	}

	// Setup HTTP transport
	tr := &http.Transport{
		Dial: dialer.Dial,
	}
	client := &http.Client{Transport: tr}

	res, err := client.Get("https://httpbin.org/ip")
	if err != nil {
		log.Fatal(err)
	}

	d, err := ioutil.ReadAll(res.Body)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(string(d))
}

hie how can i reset the public ip manually in the code

os.Setenv("HTTP_PROXY","socks5://127.0.0.1:9050")

i think this is more easier