Implementation of a simple xAP listener application that is actually a hugely useful tool for watching what's going on around your xAP network.
Whilst it outputs all received messages to the console window you can optionally filter out heartbeat messages by editing the supplied app.config file. You can also opt to see all heartbeats except those of the Listener application. This is quite a handy feature for debugging especially if there are no other xAPps running.
Lastly there is an option to only listen to messages originating from the local machine. This is useful for debugging on one machine without having to stop other xAPps to quieten things down a bit.
Has been succeeded by the superior xAP Message Viewer