THE BROWSER

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.