Introduction

Underlying the user interface represented by browsers, is the network and the protocols that travel the wires to the servers or "engines" that process requests, and return the various media. The protocol of the web is known as HTTP, for HyperText Transfer Protocol (RFC 1945, 2616). Tim Berners-Lee implemented the HTTP protocol in 1990-1 at CERN, the European Center for High-Energy Physics in Geneva, Switzerland. HTTP stands at the very core of the World Wide Web. According to the HTTP/1.0 specification, the Hypertext Transfer Protocol is an application-level protocol with the lightness and speed necessary for distributed, collaborative, hypermedia information systems. It is a generic, stateless, object-oriented protocol which can be used for many tasks, such as name servers and distributed object management systems, through extension of its request methods (commands). A feature of HTTP is the typing and negotiation of data representation, allowing systems to be built independently of the data being transferred.