See README.txt in loan-broker sample for information about this sample. To change the multicast code in udps.groovy to rely on unicast instead, simply change the MulticastSocket type to DatagramSocket and remove the next 2 lines that deal with joining the multicast group. Then, in the configuration of the actual adapter, set: host="127.0.0.1" and multicast="false". For the Roo/Spring Integration application, edit the integrationContext.xml file, on the udpIn adapter, set multicast to false and remove the multicast-address attribute.