IBM WebSphere Application / Portal服务器，TAI和HttpSession和Cookies

Question

I have IBM WAS 6.1 and Portal 6.1. Also i have a TAI which works when user login/logout in/out Portal. I want to work with HttpSession in TAI. Shortly my task is next: when user logging in i want to save some parameter in memory and as a key i want to use ID of HttpSession (or something else?).

For an example, while user logging id of httpsession is "foo" . Than, user logged in and working in Portal, and press Logout button, portal logged out user using internal mechanize and than my TAI catch this request and now i have a http session with Id "bar" . So, WAS changed http session. This means i can not user http session to save any parameter, because WAS recreates it for logging out. But i have to save some parameter while user logging in, and use it while he logging out.

Also i can't use Cookies for some reasons. Any idea how i can save ID based on HttpSession?

Or i have to know who(Portal Uid of user) pressed logout button in TAI. It is also helps me to resolve my problem.

UPDATE #1.

Also, for some reason WAS(?) delete custom cookie. I add custom cookie in TAI and WAS deleting it, i can not find my own cookie. Any idea where and why? There also http server beyond was and client, but i checked it - he shouldn't delete it.

Answer 1

I did not resolve question about http session, but i resolved problem with a cookie. Right cookie:

Cookie cooky = new Cookie();
cooky.setPath("/");
cooky.setDomain("domain.com");