.

You could listen without segregating the server . i.e on the localhost as well. Just had to make sure, you listen on the "right" interface. Nevertheless, since you've already done that : Now all you need to do is to sniff the "right" data. : )

Capture Filter is how you do that!

First , see which port your application listens to, and filter on that port. You may even color them or discard other packets to see the clean shit "right" data.