How to enforce a persistent URI

Hi all,

I was wondering if someone has a better solution then one I came up with. Mine does not cover all issues. What's it all about.

We've got a remote working solution based on Citrix which is hosted by the BIG-IP appliance. The solution is for several customers. Each having it's own landing uri. So we've got:

* portal.company.foo/customer1

* portal.company.foo/customer2

* etc.

When you visit correct portal you get your own custimized login screen. After succesfull login you are redirect, by a policy, to the correct Citrix Web interface:

* /Citrix/Xenapp-Cust1

* /Citrix/Xenapp-Cust2

* etc.

No problem so far. Works fine. The problem is that you change the uri in the webinterface site. So Customer1 can browse to the site of customer2.

To prevent that from happening I created the following script:

when HTTP_REQUEST {
    if {[string tolower [HTTP::uri]] starts_with "/citrix/xenapp"} {
        if {[HTTP::cookie exists LastMRH_Session]} {
            set lstURI [split [HTTP::uri] /]
            lset lstURI 2 [table set -excl [HTTP::cookie value LastMRH_Session]-myInitialUri [lindex $lstURI 2] 86400]
            HTTP::uri [join $lstURI /]
        } else {
            log local0. "No cookie called LastMRH_Session yet."
        }
    }
}

Works fine too. But it only works if you uri sthat tarts with /citrix/xenapp. But What if you type something else? The reason for me to put in the IF statement is I only want record a correct initial uri.

So my question is: can this be done more elegant and robust? I'm fairly new with this product. Thanks for your help.

Richard