1 一:HTTP协议:hypertext transport protocol(超文本传输协议)
2 特点:
3 1.请求与响应
4 2.无状态的协议
5 请求协议:
6 请求首行:
7 请求头信息:
8 Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
9 Accept-Encoding:gzip, deflate, br
10 Accept-Language:zh-CN,zh;q=0.9
11 Connection:keep-alive
12 COOKIE:BAIDUID=47A6DD50BC3D91236FEE1906BD2DE0B6:FG=1; BIDUPSID=47A6DD50BC3D91236FEE1906BD2DE0B6; PSTM=1510046493; ispeed_lsm=10; BD_UPN=12314753; BDORZ=B490B5EBF6F3CD402E515D22BCDA1598
13 Host:www.baidu.com
14 Upgrade-Insecure-Requests:1
15 User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36
16 空行:
17 请求体:
18 --如果是get方式提交,数据是存放在UTL后面;而post是放在请求体中。
19 响应:
20 Bdpagetype:1
21 Bdqid:0x8f6422cd00053969
22 Bduserid:0
23 Cache-Control:private
24 Connection:Keep-Alive
25 Content-Encoding:gzip
26 Content-Type:text/html; charset=utf-8
27 Cxy_all:baidu+10365439d71d1527700dadaf75cc64b2
28 Date:Wed, 08 Nov 2017 10:05:53 GMT
29 Expires:Wed, 08 Nov 2017 10:05:32 GMT
30 Server:BWS/1.1
31 Set-COOKIE:BDSVRTM=0; path=/
32 Set-COOKIE:BD_HOME=0; path=/
33 Set-COOKIE:H_PS_PSSID=1424_24866_24558_21107_24879_22159; path=/; domain=.baidu.com
34 Strict-Transport-Security:max-age=172800
35 Transfer-Encoding:chunked
36 Vary:Accept-Encoding
37 X-Powered-By:HPHP
38 X-Ua-Compatible:IE=Edge,chrome=1