INTERNET: HTTP Request and HTTP Response ~ JAVA INTERVIEW QUESTIONS

Thursday, 9 February 2012

INTERNET: HTTP Request and HTTP Response

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HTTP (HyperText Transfer Protocol):

HTTP is a stateless protocol. That means, It doesn’t contain any information regarding the client.
It works as a request-response protocol in the client-side computing model.
As it’s an Application Layer Protocol within the Framework Internet Protocol Suite, needs a Transfer Layer Protocol (usually Transmission Control Protocol) for data transmission.
It carries request from Client-side (web browser) to the web server, known as HTTP Request. And again the response from the web-server to the browser, known as HTTP Response.

HTTP Request:

· HTTP Request means transferring a request form the client side to the server.

· It contains different types of HTTP Request Methods, which are used to indicate the type of the request.

· It has URI which locate the destination.

· It also has Protocol Version (Example: HTTP/1.1)

·        Then comes the Request Header, which contains information regarding the 
client environment like, Accept-Charset, Accept-Encoding, Authorization,etc.

· Then there is a Message Body section, which contains actual information regarding the request.

HTTP Response:

· HTTP Response means transferring a response of the client’s request by the web server.

· First it contains the protocol name, its version, status code of the request, and a brief description of the status code.

· Then it contains Response Header, which contain the information
of the server side environment.

· After that it has, Message Body, which contain the actual response for the client.