Web框架

Web应用：

WEB应用（网站）：
        Http协议：
            发送：
                POST /index HTTP/1.1
                Host: 127.0.0.1:8080
                Connection: keep-alive
                Cache-Control: max-age=0
                Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
                User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.89 Safari/537.36
                HTTPS: 1
                Accept-Encoding: gzip, deflate, sdch
                Accept-Language: zh-CN,zh;q=0.8
                Cookie: csrftoken=hNmu2JOtntGMN0hSRSPmMQk2newEb3o8zb6pXW5Cc3m54IaA5VlTkUvqWsFezpni


                p=123
            
            响应：
                200 OK
                Cache-Control:public, max-age=15
                Connection:keep-alive
                Content-Encoding:gzip
                Content-Type:text/html; charset=utf-8
                Date:Wed, 14 Jun 2017 01:21:17 GMT
                Expires:Wed, 14 Jun 2017 01:21:33 GMT
                Last-Modified:Wed, 14 Jun 2017 01:21:03 GMT
                Transfer-Encoding:chunked
                Vary:Accept-Encoding
                X-Frame-Options:SAMEORIGIN
                X-UA-Compatible:IE=10
                        
                
                
                用户在页面看到的内容“字符串”（看到页面效果，由于浏览器解析）------响应体