When a URL is issued from the browser to retrieve a web source using HTTP, the browser turns the URL into a request message and sends the message to the HTTP server. The server then interprets the message and returns a response message which is either a requested resource or an error message.

  1. User issues url from the browser.
  2. Browser turns URL into a request message that gets sent to HTTP server
  3. Server interprets message (maps URL to file or program under the directory)
  4. Server sends a response message to the client
  5. Browser displays response to the user.
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