How to modify http headers in Internet Explorer

When developing for the web, you may want to simulate various HTTP Header values for your application. This is easy in Firefox - there are a number of plugins that allow you to do this like Modify Headers.

However for IE6 it is more difficult. The best solution I have found is this one:

- Download Fiddler.
- Open the 'Customize Rules' window (Rules->Customize Rules...)
- find this function: static function OnBeforeRequest(oSession: Session)
- inside this function, add the header values that you would like to add, in this format:

oSession.oRequest["headerName"] = "headerValue";

-save


Voilà! Internet Explorer will now accept your custom header values. You will probably need to clear your browser cookies before it takes effect.