package main

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

func main() {
    ipapiClient := http.Client{}
    
    req, err := http.NewRequest("GET", "https://ipapi.co/json/", nil)
    if err != nil {
        log.Fatal(err)
    }
    req.Header.Set("User-Agent", "ipapi.co/#go-v1.3")

    resp, err := ipapiClient.Do(req)
    if err != nil {
        log.Fatal(err)
    }

    defer resp.Body.Close()

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

    fmt.Println(string(body))
}