Mantain Session when moving to a different site and comming back

Question

Hi all.... i have an application that runs some credit cards verification.. when the user reachs the checkout point, the system redirect some information to the page of our credit card system provider , then it checks there if transaction is approved and then returns to another page of my application. I put some information on the session before the application goes to the other site and I need to get that same information once I get back to my application, anyone has any clue to make this?

Answer 1

Session has to be the same. Before going/calling credit card checking program you should do 1 things: be sure that your session won't be destroyed while you're checking damned card. AFAIK default session invalidation time is 15 minutes (or even 1/2 hour) so you shouldn't be late :) If you're not sure about that you'd better call before going carding smth like:
hs.setMaxInactiveInterval(-1);So your session will never be destroyed/invalidated, well it depends on particular Servlet/JSP container.
Anyway after checking of card request again for your session:
HttpSession hs=request.getSession(false);
if(hs==null)
      System.err.println("My session is destroyed!");Paul