ABNF语法

http典型的请求场景

 

来自极客时间课件

 http协议介绍

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[c:\~]$ telnet www.taohui.pub 80     Host 'www.taohui.pub' resolved to 116.62.160.193. Connecting to 116.62.160.193:80... Connection established. To escape to local shell, press 'Ctrl+Alt+]'.   GET /wp-content/plugins/Pure-Highlightjs_1.0/assets/pure-highlight.css?ver=0.1.0 HTTP/1.1   Host:www.taohui.pub  输入后两个回车   HTTP/1.1 200 OK Server: openresty/1.15.8.1 Date: Thu, 30 May 2019 17:34:50 GMT Content-Type: text/css Content-Length: 108 Last-Modified: Thu, 27 Dec 2018 07:35:33 GMT Connection: keep-alive ETag: "5c2480c5-6c" Expires: Thu, 06 Jun 2019 17:34:50 GMT Cache-Control: max-age=604800 Accept-Ranges: bytes   pre.pure-highlightjs {     background-color: transparent;!important;     border: none;     padding: 0; }HTTP/1.1 400 Bad Request Server: openresty/1.15.8.1 Date: Thu, 30 May 2019 17:34:53 GMT Content-Type: text/html Content-Length: 163 Connection: close