redircert traffic to a specific resource using HTTP:HEADER

You know, I'm not sure you can assign multiple webtops, so you may just have to have the logic assign a webtop which will won't change throughout the entire session. Since the

HTTP_REQUEST

executes prior to the session getting created, you may run into a problem with this. You might consider setting a variable in the

HTTP_REQUEST

event and then using the

ACCESS_SESSION_STARTED

event to set the session variable when the session gets initialized. From there, you could assign the right webtop based on that variable (I'd recommend using a single session variable and letting the value be something sepcific, or default to an empty string if no match). At that point, the webtop would be assigned and when the policy finishes (assuming you're not doing any redirection away from the webtop after login completes), they should see the desired webtop. Perhaps something like this:

when HTTP_REQUEST { 
    if { [HTTP::header exists "HEADER_NAME"] } { 
        log local0 "HEADER_NAME EXISTS" 
        set headerName "HEADER_NAME"
    }
}
when ACCESS_SESSION_STARTED {
     Check that the variable exists
    if { [info exists headerName] } {
        switch $headerName {
            "HEADER_NAME_1" {
                ACCESS::session data set session.custom.WHATEVER "value_1"
            }
            "HEADER_NAME_2" {
                ACCESS::session data set session.custom.WHATEVER "value_2"
            }
        }
    }
}