ASP.Net how to allow searchbots(google) to skip a disclaimer page

Question

I am creating an ASP.NET website witch forces users to accept a disclaimer. When they accept the disclaimer a cookie and session is set. On each page request a check is fired to see if the session or cookie present.

We want to allowed Google and other Searchbots to index/craw all the pages without accepting the disclaimer.

What is to best way to do this? The only thing that I can think about is a check in the Request.ServerVariables, but I am not sure witch values I should look for?

Answer 1

You need to bypass the check for the session/coockie in case Googlebot is passing by.

So in this check you indeed need to look at ServerVariables. E.g. for Google this would be something like

   HttpContext.Current.Request.ServerVariables["HTTP_USER_AGENT"].Contains("Googlebot"))

Of course, anyone pretending to be google will now also be able to skip the disclaimer.

I wouldn't call this cloacking - but no guarantees as to wether google likes it or not