Enhancing discovery with liveness [network device disappearance detection protocol]
M. Bodiaender, J. Guldi, Lex Heerink · 2004
Discovery protocols like SSDP, SLP, Rendezvous and Jini allow fast detection of devices. They are typically less suitable for fast detection of disappearing devices. This paper describes the design of a liveness protocol that quickly detects that devices have left the network. Mechanisms that improve important properties like reliability and efficiency over wireless, scalability and high-dynamics are highlighted. The performance of the liveness protocol is analyzed: it has significantly less message overhead than alternative solutions.