Whats required for Joomla SSO with Tomcat/servlets?

[felem]

Hello,

this is probably an off topic question, but some experts here have certainly a lot of knowledge in this area and because I'm utterly new to this whole web-dev thing I'm very glad for any advise. So please feel free to post some hints.

I'm planning to embed some javascript code that communicates to a servlet in a Joomla site. Joomla is powered by Apache and the servlets are running on Tomcat. The users should authenticate against Joomla.

Now I need some way to test if a Joomla session is still valid from within a servlet. So the question is, how can a servlet test if a Joomla session is still valid? How must Apache/Tomcat be configured? Are there any other software components required beside Apache,Tomcat,Joomla and the servlet itself? How is Joomla/Tomcat SSO usually solved?

Any advise is welcome,
thank you.

[mhankosky]

Did you ever get this working?