two web sites one HttpSession ?

[Kit]

Hi all

I am trying to set up two web sites that need to share the same
HttpSession.

Both web-site.xml files already have this line.

<default-web-app application="default" name="defaultWebApp" shared="true" />

They are running on port 80 and 8080. They can share the same EJB
sessions, but when i switch to another web site, i lose my data stored in
previous HttpSession.  The two web sites don't share the same HttpSession.

Can anyone provide some hints ?

Thanks a lot.

-kit