GraphQL request in Go

main.go

package main

import (
	"bufio"
	"bytes"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"strconv"
	"time"
)

func main() {

	file, err := os.Open("resources/collected_queries.txt")

	if err != nil {
		log.Fatalf("failed to open")

	}

	// The bufio.NewScanner() function is called in which the
	// object os.File passed as its parameter and this returns a
	// object bufio.Scanner which is further used on the
	// bufio.Scanner.Split() method.
	scanner := bufio.NewScanner(file)

	// The bufio.ScanLines is used as an
	// input to the method bufio.Scanner.Split()
	// and then the scanning forwards to each
	// new line using the bufio.Scanner.Scan()
	// method.
	scanner.Split(bufio.ScanLines)

	for scanner.Scan() {
		time.Sleep(2 * time.Second)
    request, err := http.NewRequest("POST", "https://{host}/endpoint", bytes.NewBuffer([]byte(scanner.Text())))
		request.Header.Set("Content-Type","application/json")
    request.Header.Set("Host",{host})
		client := &http.Client{Timeout: time.Second * 10}
		response, err := client.Do(request)
		if err != nil {
			fmt.Printf("The HTTP request failed with error %s\n", err)
		}
		data, _ := ioutil.ReadAll(response.Body)
		response.Body.Close()
		fmt.Println(string(data))
	}
}