When you open i.e. or any web browser and enter a URL and submit the request to any webserver, "WHAT" is sent? When I say what, I mean I know that were making a call (request) for maybe a specific webpage as follows:
in the URL area
Click enter or submit
I know that the request for the above URL will return the default webpage (index.html or whatever) that the webserver has set up. But "WHAT" does the webserver receive? Does the webserver receive a text file that has request information?