Monday, December 15, 2008

Workings of the World Wide Web

The World Wide Web operates using a client/server networking principle. When you enter the URL (the web address) of a web page into your browser and click on Go, you ask the browser to make an HTTP request of the particular computer having that address. On receiving this request, that computer returns ("serves") the required page to you in a form that your browser can interpret and display.

Sending Requests Using the HTTP Protocol," discusses the nitty-gritty of HTTP requests in more detail. For now, suffice to say that your HTTP request contains several pieces of information needed so that your page may be correctly identified and served to you, including the following:

The domain at which the page is stored (for example, mydomain.com)

The name of the page (This is the name of a file in the web server's file systemfor example, mypage.html.)

The names and values of any parameters that you want to send with your request

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