Removing Unnecessary HTTP Headers in IIS and ASP.NET
Whenever a browser makes an HTTP request to a web server, it sends along several HTTP headers . These HTTP Headers are used to provide the web server with information to assist with handling the request. For instance, if the browser supports compression it will send along an Accept-Encoding HTTP Header, which lets the web server know what compression algorithms the browser can work with. Any cookies previously set by the web server are sent from the browser back to the server via the Cookies HTTP Header. The browser also sends the User-Agent HTTP Header, which the web server can parse to determine the browser (IE, Firefox, Safari, etc.), the version number, the operating system, and other information. Similarly, the web server includes a number of HTTP Headers when it sends back the contents of the requested resource. These headers are used by the browser to determine how to render the content and for how long to cache the content.
