Communication between webserver and the client-user

You, the client, give a request to the webserver

The webserver will give a response to your computer,

1. Upon receiving a request, an HTTP server first checks if the requested URL matches an existing file.
2. If so, the web server sends the file content back to the browser. If not, an application server builds the necessary file.
3. If neither process is possible, the web server returns an error message to the browser, most commonly 404 Not Found. The 404 error is so common that some web designers devote considerable time and effort to designing 404 error pages.

If webserver's response is OK,
the, files required to display website will be sent to your computer.

• example of HTTP reQUEST by CLIENT

• example of RESPONSE from WEBSERVER