Fetch (scrape) product's data by net/http not uflfetch

no_uflfetch.go

package main

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

func main() {
	client := http.Client{}

	u := ""
	if len(os.Args) > 1 {
		u = os.Args[1]
	} else {
		fmt.Printf("please provide URL")
		return
	}

	req, err := http.NewRequest(http.MethodGet, u, nil)
	if err != nil {
		fmt.Printf("failed to create request for product's html, error: %s", err)
		return
	}

	req.Header.Set("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36")

	res, err := client.Do(req)
	if err != nil {
		fmt.Printf("failed to get product's html, error: %s", err)
		return
	}

	body, err := ioutil.ReadAll(res.Body)
	if err != nil {
		fmt.Printf("failed to read response body, error: %s", err)
		return
	}

	fmt.Printf("%s", body)
}