I am not sure if this is the write place to post this question, but we are using custom jboss extensions to allow users (clients) to login to an application. 

We have a custom login module we wrote that provides specific code for this login.  The current problem is that the client is needing a response xml when the login fails, and I am not sure how to return that to the jboss container and then to the client.

Can you help me with this?  Is it even possible to do?

Thanks,

Alex