I inherited a rewritten
Java project that is written for an ATM Switch. I've been working on this project for 3.5 months and trying to
test the application for certification with Discover Card. I am not that familiar with Concurrency (threads and receive queuers) but I think I've run into a problem with a blocking problem and cannot find a way to correct the problem.
Here is the scenario of what occurs:
1. I start the application on our development server (Windows 2003).
2. I submit a ISO8583 message (0800) for a dynamic key
exchange to my application via a WEB APP called RCT on the Discover web site and the message processes fine. The message then stops.
3. The key is then held in memory in the Discover web app.
4. I submit the next ISO8583 mesage (0200) to my application BUT I never see the subsequent ISO8583 message even hit our application.
5. I can see the subsequent message come across the wire on a specific port using Wireshark to confirm but it never makes it to the application entry point. I put a breakpoint on where I would see the subsequent message hit the application but I never reach the breakpoint. In the Eclipse debug session I see the DiscoverChannel
thread running plus the 2 receive queuer threads running as well. They appear to be open and ready for a message but again it never reaches the application.
Any suggestions/direction on how to debug this type of problem would be appreciated. The previous developer at this company is no longer available to ask. I've been dealing with this specific issue for 2 weeks and cannot find a solution.
Regards.