In fact  the PDF is not local in the box where IIS is running. I am using a CMS solution and the file is located in the CMS server. The CMS itself has a handler that is supposed to do URL rewriting and forwarding the requests to the correct templates.

So, what I actually have is a request to a PDF file that is in a remote location. From within the http handler I cannot access it because I don't have the session object (thus, cannot load the file using the CMS API).

I just want the http handler to bypass the request if a particular cookie is available.