I have a JSP including a <iframe> in the middle of page. On top of page there are some links linking to different site. When click one link, the content is displayed in the <iframe> underneath the links.
When I clicked one link that goes to a web app in a different server, I got the page displayed in the iframe. However, after that whatever link I click, I found I can not see the page because the variables and credentials saved in session are all gone and I got session error page. Note: when I click the link for the first time, I still got everything. But after that, whatever link on the page i click, I was directed to the login page showing no session found.
what could be wrong for that link ? why did it work everytime when I click it for the first time ? but fails afterwards immediately ?