Get content and status code of headers and body and print to screen. Url is pulled from commandline arguments

get_request_url.go

package main

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

func main() {
	// Verify correct number of commandline arugments
	if len(os.Args) != 2 {
		log.Fatalf("Usage: %s URL", os.Args[0])
	}
	// Grabbing url from commandline argument
	url := os.Args[1]
	// Headers
	fmt.Println("Header\n")
	res_header, err := http.Head(url)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("Header Status Code:", res_header.StatusCode)
	for k, v := range res_header.Header {
		fmt.Printf("%s: %s\n", k, v)
	}
	// Body
	fmt.Println("\nBody\n")
	res_body, err := http.Get(url)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("Body Status Code:", res_body.StatusCode)
	body_out, err := ioutil.ReadAll(res_body.Body)
	res_body.Body.Close()
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%s", body_out)
}