Robert Fashion design splendor

Fashion design is a relatively new category, marking the shift from the dominance of French haute couture in the 1950s to new fashion centers in the United States, Europe, and Japan. Youth, street styles, and pop culture have become increasingly central to fashion design.

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The beginning of a request
comment 2 Comments Written by Robert on April 4, 2008 – 12:08 am

HTTP is basically a simple text protocol. The first line of a request specifies the request method (‘Get’, ‘Post’, …), the ‘resource’ and the protocol being used (HTTP/1.0 or HTTP/1.1). The next few lines are headers. These lines have a keyword that identifies the type of general header or request header, or entity header, and some data. There will be a blank line following these header data, and then possibly a request body (‘entity’).

General headers are used to specify properties of the transfer process. One example of a general header is the Connection header, which allows a client to specify that it wants to have its connection closed (Connection: close) as soon as the first response is complete. (Why would you want to do that? It is something messy relating to the use of proxy servers.) The Cache-Control header is a more complex example; a client requesting a resource that might be cached can use a Cache-Control header to specify constraints like the maximum age that it is prepared to accept for that resource. (An example might be a request for the headline page from a news source: you might accept a cached copy of page prepared two hours ago, but you wouldn’t want yesterday’s headlines.)

Request headers add supplementary information to a request or describe client capabilities. Examples include If-Modified-Since, Range, Accept-Language, Referer, and User-Agent. The header If-Modified-Since can be used with a ‘Get’ request for a static resource (fixed web page); this can save network traffic if the resource has not been modified as the server sends a short ‘not-modified’ response instead of a copy of the file. If a resource is large (e.g. a movie clip, audio clip or large image) it may be more convenient for a client to submit requests for successive segments of the data; a Range request allows a client to request a specified byte range from a resource.

An Accept-Language header specifies the language preferences that a user has specified in their browser’s properties dialog; if the server has a resource available in language variants, it should select the version that best matches the client’s requirement. If the client is requesting a resource by activating a hypertext link, the Referer header will contain the URI of the page containing that link. Finally, the User-Agent header will contain a text string identifying the browser that the client is using.

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