1.4. Application protocol capabilities

By Rainer Hillebrand

Table of contents

1.4.1. A typical HTTP session
1.4.2. Persistent connections in HTTP/1.1

The application protocol for web browsing is the HyperText Transfer Protocol (HTTP) (see [22]). It has been specified by the Internet Engineering Task Force (IETF) in the Request for Comment (RFC) 2616.

A web browser uses this application-level protocol to send requests to web servers to ask for media objects like web pages, graphics, Cascading Style Sheet files, audio and video sequences. It is a stateless protocol, which means that it doesn't store information about previous HTTP sessions being considered in succeeding sessions. HTTP is a request/response protocol. A client or so-called user agent sends an HTTP request to an origin server. The origin server responds within this HTTP session and terminates the HTTP session. The server is only able to respond on a request.

Copyright © 2001-2003 by Rainer Hillebrand and Thomas Wierlemann