title: how to receive unsolicited hl7 messages using hapi simple server?
body: <p>I'm trying to develop a simple hl7 server using the hapi library, based on this example: <a href="http://hl7api.sourceforge.net/xref/ca/uhn/hl7v2/examples/SendAndReceiveAMessage.html" rel="nofollow">http://hl7api.sourceforge.net/xref/ca/uhn/hl7v2/examples/SendAndReceiveAMessage.html</a></p>
  
  <p>I can send a query message to another, I get the acknowledgement on the socket used to send the QBP^Q22, but had no luck receiving the query response on a seperate port. I've tried to follow the above example as closely as possible, and tried replacing the SimpleServer with TwoPortServer, but that didn't seem to work any better.
  Any ideas?</p>