I have two web application A and B with SSO on JBoss AS 7.1.1.

jboss-web.xml of application A is:

    <jboss-web>

     <context-root>/A</context-root>

      <security-domain>MySecurityDomain</security-domain>

     <valve> 

         <class-name>org.apache.catalina.authenticator.SingleSignOn</class-name> 

     </valve>

    </jboss-web>

jboss-web.xml of application B is:

<jboss-web>
     <context-root>/B</context-root>
      <security-domain>MySecurityDomain</security-domain>
     <valve> 
         <class-name>org.apache.catalina.authenticator.SingleSignOn</class-name> 
     </valve>
    </jboss-web>

When I login in A, I login also in B, it works.

If I logout in A, I logout also in B, it works.

If I login in A and I logout in B, it doesn't work.

My java function for logout, using primefaces, is:

  public void doLogout() {
        HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);

        if (session != null) {
            session.invalidate();
        }

        HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
        try {
            request.logout();
        } catch (ServletException ex) {
            Logger.getLogger(LoginController.class.getName()).log(Level.SEVERE, null, ex);
        }
       
    }