I already replied to your original mail. Please don't double post.
> I am looking at reverse ajax techniques to ping my client's
> browser. As we know detecting crashed or closed browsers seems to be
> impossible if caches and cookies are restored. I am unaware of any
> mechanism that banks might use to implement this. Ours is a core
> banking system.
> My current assumption is that DWR can keep track of dropped HTTP
> connections. So I can use a heartbeat but also use an exception
> handling mechanism to differentiate between crashed browsers and new
> browsers. I am assuming when a browser is closed or crashed the old
> HTTP socket is also discarded with some type of notification to the
> Can I try this mechanism with DWR ? This might also help us evaluate
> reverse ajax for website design.