Ruijie RG-S2900G-E Series, Руководство по настройке

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Configuration Guide Configuring HTTP Service
Configuring HTTP Service
Overview
Understanding HTTP
The Hypertext Transfer Protocol (HTTP) is used to deliver Web page information over the Internet. HTTP is located at the
application layer of the TCP/IP protocol stack and uses connection-oriented TCP as the transport protocol.
The Hypertext Transfer Protocol Secure (HTTPS) is an HTTP protocol that supports the Secure Sockets Layer (SSL)
protocol. Its main idea is to create a secure channel on an unsecure network to prevent information from being monitored
and Man-in-the-Middle Attacks. HTTPS is now widely used in communication sensitive to Internet safety, such as
electronic payment.
Basic Concepts
HTTP Service
HTTP service uses the HTTP protocol to deliver Web page information on the Internet. HTTP/1.0 is the HTTP protocol
version in common use. As a Web server may be accessed for tens of thousands or millions of times a day, HTTP/1.0
adopts the short connection mode to facilitate connection management. A TCP connection is created for a request. After
the request completes, the connection will be released. The server does not need to record or track previous requests.
Despite that HTTP/1.0 simplifies the connection management, it has weakness in its performance.
For example, a page may contain many images. In fact, the page contains their URL connection addresses rather than
the images themselves. Therefore, a browser will send multiple requests during the access process. A separate
connection will be created for each request and every connection is completely isolated. Moreover, the process of
establishment and release of connection will substantially affect the performance of clients and the server. See Figure 1-1.
Figure 1-1 HTTP/1.0 protocol packet interaction