HTTP!!!

一 : 请求报文

一个HTTP 请求报文, 分成四个部分

1. 首行
   GET https://cn.bing.com/?FORM=Z9FD1 HTTP/1.1
2. 请求头(header)
3. 空行
4. 正文(body)

1.2 : 首行

首行又分为三个部分 :
每个部分用空格分开

1. 请求的方法
   常用的是get ,post

2. 请求的URL(请求对方的网址)
   https://cn.bing.com/?FORM=Z9FD1

3. 版本号
   HTTP/1.1

1.3 :请求头(header)

Host: cn.bing.com
Connection: keep-alive
sec-ch-ua: "Microsoft Edge";v="125", "Chromium";v="125", "Not.A/Brand";v="24"
sec-ch-ua-mobile: ?0
sec-ch-ua-full-version: "125.0.2535.92"
sec-ch-ua-arch: "x86"
sec-ch-ua-platform: "Windows"
sec-ch-ua-platform-version: "15.0.0"
sec-ch-ua-model: ""
sec-ch-ua-bitness: "64"
sec-ch-ua-full-version-list: "Microsoft Edge";v="125.0.2535.92", "Chromium";v="125.0.6422.142", "Not.A/Brand";v="24.0.0.0"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36 Edg/125.0.0.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,ima