go基礎筆記----http and other Standard library

package main

import (
	"fmt"
	"net/http"
	"net/http/httputil"
	_ "net/http/pprof"
)

/*
	http{
		使用http客戶端發送請求
		使用http.Client控制請求頭部等
		使用httputil簡化工作
	}

	http服務器性能分析{
		import _ "net/http/pprof"
		訪問/debug/pprof/
		使用go tool pprof分析性能
	}
*/

/*
	other標準庫{
		bufio
		log
		encoding/json
		regexp //正則表達式
		time
	}
*/

func main() {
	request, err := http.NewRequest(http.MethodGet, "http://www.imooc.com", nil)
	request.Header.Add("User-Agent", "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1")
	client := http.Client{
		CheckRedirect: func(req *http.Request,
			via []*http.Request) error {
			fmt.Println("Redirect:", req)
			return nil
		},
	}
	resp, err := client.Do(request)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	s, err := httputil.DumpResponse(resp, true)
	if err != nil {
		panic(err)
	}

	fmt.Printf("%s \n", s)
}