Hypertext Transfer Protocol (HTTP)

HTTP is stands for Hypertext Transfer Protocol. It is an application level protocol and has become the standard Web service protocol. It enables transfer of files that may include text, graphic images, sound, video and other multimedia files on the World Wide Web. Essential concepts that are part of HTTP include the idea that files can contain references to other files whose selection will elicit additional transfer requests.

An HTTP daemon or HTTPd is a program that is designed to wait for a number of incoming. HTTP requests and respond them when they arrive. The standard web browser installed at the clients computers generate requests that are handled at the server by this HTTPd.Users demand to see the web pages by typing the the URL of the organization or web server such as http://www.examsagar.com or clicking na hypertext link the browser generates an HTTP request and sends it to the IP address indicated by the URL.
The concept of HTTP is based purely on request response combination with the client requesting and the server responding to the requests. The server straightaway process the request, generates a response and closes the connection

The built-in methods of HTTP are given below :

• GET - Request to read a webpage.
• HEAD - Request to read a webpage's header.
• PUT - Request to store a webpage.
• POST - Append to named resource.
• DELETE - Remove the webpage.
• LINK - Connects two existing resources.
• UNLIKE - Breaks an existing connection between two resource.