9:52 AM  Shubham Yadav  No comments

HTTP is the most ubiquitous protocol in use on the Internet. Every Web browser and server must communicate over this protocol in order to exchange information. There have been three major versions of the protocol, all of which maintained the same fundamental structure. HTTP is a request/response stateless protocol that allows computers to talk to each other rather efficiently and carry on conversations lasting hours, days, and weeks at a time.

Although the HTTP/1.0 specification currently in use is a far cry from the original specification proposed by Tim Berners-Lee in March 1990, the fundamental features of HTTP haven't changed all that much.

Major Version of HTTP:-

HTTP/0.9

The first official HTTP specification is typically considered HTTP/0.9. This version and its successor are defined in the Internet Engineering Task Force's (IETF) Request for Comments (RFC) document RFC1945 (http://www.ietf.org/rfc/rfc1945.txt). For four years (1992–1996), HTTP/0.9 found modest use on the Internet despite the Web's infancy at the time. HTTP/0.9 was limited in many ways and didn't cover what we now consider to be required elements of Web interaction.

HTTP/1.0

The HTTP/1.0 specification came along just as the Internet started to heat up. Despite its relative age in the technological sense—it was finalized in May 1996—HTTP/1.0 remains the king of the HTTP protocol versions on the Internet. Most Web servers and browsers still use HTTP/1.0 for default communication. As with HTTP/0.9, HTTP/1.0 is covered under RFC 1945.

The underpinnings of the HTTP/1.0 protocol reside with the request/response exchange. This exchange permits information to be sent, parsed, and returned between a client (Web browser) and a server (Web server)—or prevents it.

In general, the HTTP/1.0 URL looks something like this:

http://host