Jini™ Specifications, The, Second Edition

DU.3. LookupDiscovery Utility

In a Jini application environment the multicast discovery protocols are often collectively referred to as multicast discovery or group discovery. The entities that participate in the multicast discovery protocol are a discovering entity (Jini client or service) and a Jini lookup service, which acts as the entity that is to be discovered. When the discovering entity starts, it uses the multicast request protocol to announce its interest in finding lookup services within range. After a specified amount of time, the entity stops sending multicast requests, and simply listens for multicast announcements from any lookup services within range that may be broadcasting their availability. Through either of these protocols, ...