1. HTTP协议(超文本传输协议)
浏览器===>服务器发送的请求格式如下:
GET / HTTP/1.1 Host: www.baidu.com Connection: keep-alive Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8 Accept-Encoding: gzip, deflate, br Accept-Language: zh-CN,zh;q=0.9
服务器==>浏览器回送的数据格式如下:
header：告诉浏览器特殊信息(必须有HTTP/1.1 200 OK)
HTTP/1.1 200 OK Bdpagetype: 2 Bdqid: 0xb49ba00a00010431 Cache-Control: private Connection: Keep-Alive Content-Encoding: gzip Content-Type: text/html;charset=utf-8 Date: Sat, 09 Mar 2019 14:40:59 GMT Expires: Sat, 09 Mar 2019 14:40:59 GMT Server: BWS/1.1 Set-Cookie: BDSVRTM=70; path=/ Set-Cookie: BD_HOME=1; path=/ Set-Cookie: H_PS_PSSID=28648_1455_28395_21114_28608_28584_28557_28604_28625_28605; path=/; domain=.baidu.com Strict-Transport-Security: max-age=172800 X-Ua-Compatible: IE=Edge,chrome=1 Transfer-Encoding: chunked
Cookie: BAIDUID=969EF83E73AFFBF96897E645871A1957:FG=1; BIDUPSID=969EF83E73AFFBF96897E645871A1957; PSTM=1549905544; BD_UPN=12314353; delPer=0; BD_CK_SAM=1; PSINO=1; ___rl__test__cookies=1552141627935; OUTFOX_SEARCH_USER_ID_NCOO=1556761245.5429947; BDRCVFR[QxxZVyx49rf]=I67x6TjHwwYf0; H_WISE_SIDS=125704_114553_129323_106370_128146_128229_120193_123018_129449_118893_118871_118854_118832_118787_107312_129945_129387_129088_129558_117336_129751_117432_128791_128402_129655_128246_124639_129620_129008_128967_129641_129293_128805_129692_129838_129981_129808_127764_129482_129643_129508_124030_130091_110085_129844_123289_128842_127417_128808_129049; FEED_SIDS=231735_0309_22; plus_lsv=393c3756be30db54; BDORZ=AE84CDB3A529C0F8A2B9DCDD1D18B695; plus_cv=1::m:49a3f4a6; Hm_lvt_12423ecbc0e2ca965d84259063d35238=1552141644; SE_LAUNCH=5%3A25869027_0%3A25869027; rsv_i=caa1rmCs0PpQpYzAbKe5ZOe7IPqcdsJjz9yFp5uzkt9iporuXUkXb39N0K1sIreyWXdiYvSq2TEnLzJMu1rSJdPaAoRZgSo; Hm_lpvt_12423ecbc0e2ca965d84259063d35238=1552141679; BDRCVFR[Usf3Hj-5366]=mk3SLVN4HKm; BDUSS=RJTzhiLTA2fkFSRmxiOGZYRVZEbVVMRU1FQmNsbHJDT2xRSHlPT1ZaV2NYS3RjQUFBQUFBJCQAAAAAAAAAAAEAAABEIlRw0LC2uTkwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJzPg1ycz4NcY2; BD_HOME=1; BDRCVFR[4r8LXJfwh-6]=8QV4RScte5tfjRLnjbdnHRsg17xUvNV; H_PS_645EC=1e9fAcA0iG5RIf%2Bi4FlV0onp3XbZL2oEMPgGRb1L2abD%2BGzuKThL6MgB%2Be%2FwIJ6wYVm0C2fUHAUL; H_PS_PSSID=28648_1455_28395_21114_28608_28584_28557_28604_28625_28605; sug=3; sugstore=1; ORIGIN=2; bdime=0
body
<!DOCTYPE html>
<!--STATUS OK-->
