How to determin what type of resource is being requested within AuthenticateRequest

[KiLLLaTHON]

What is the best way of working out whether or not a requested resource supports POST data before the request has been authenticated?In my HttpMoudle, within the \[code\]AuthenticateRequest\[/code\] event, I am checking whether or not the path ends with ".aspx" but this feels crude and doesn't work for routed URLs.I had explored checking the type of \[code\]HttpContext.Current.Handler\[/code\] but this is not assigned until later in the event chain.