Is this feasible - match uri value from local value in file?

As Chris suggested, you could use a datagroup to store the values you want to check the URI against. You'd probably want to set a variable in the request tracking whether to insert a cookie in the response this could be based on the URI and/or whether the request contains a valid cookie. You could then check that variable in HTTP_RESPONSE and use HTTP::cookie insert and HTTP::cookie encrypt to set an encrypted cookie. See the HTTP::cookie wiki page for details:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/http__cookie

 

 

Aaron