Service discovery

Automatic detection of devices and services on a computer network

This article is about a type of network protocols. For the multimedia session initiation protocol, see Session Description Protocol.

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Service discovery is the process of automatically detecting devices and services on a computer network. It aims to reduce the manual configuration effort required from users and administrators. A service discovery protocol (SDP) is a network protocol that helps accomplish service discovery.

Service discovery requires a common language to allow software agents to make use of one another's services without the need for continuous user intervention.[1]

## Protocols[edit]

There are many service discovery protocols, including:

* Bluetooth Service Discovery Protocol (SDP)
* DNS Service Discovery (DNS-SD), a component of zero-configuration networking
* DNS, as used for example in Kubernetes
* Dynamic Host Configuration Protocol (DHCP)
* Internet Storage Name Service (iSNS)
* Jini for Java objects.
* Lightweight Service Discovery (LSD), for mobile ad hoc networks [2]
* Link Layer Discovery Protocol (LLDP) standards-based neighbor discovery protocol similar to vendor-specific protocols which find each other by advertising to vendor-specific broadcast addresses (versus all-1's), such Cabletron (Enterasys) and Cisco Discovery Protocol (both referred to as CDP but different formats).
* Local Peer Discovery, or Local Service Discovery
* Multicast Source Discovery Protocol (MSDP), usually used for unicast exchange of multicast source information between anycast Rendez-Vous Points (RPs) to service mcast clients.
* Service Location Protocol (SLP)
* Session Announcement Protocol (SAP) used to discover RTP sessions
* Simple Service Discovery Protocol (SSDP), a component of Universal Plug and Play (UPnP)
* Universal Description Discovery and Integration (UDDI) for web services
* Web Proxy Autodiscovery Protocol (WPAD)
* WS-Discovery (Web Services Dynamic Discovery)
* XMPP Service Discovery (XEP-0030)
* XRDS (eXtensible Resource Descriptor Sequence) used by XRI, OpenID, OAuth, etc.

## See also[edit]

* Discoverability
* Semantic web

## References[edit]

1. ^ Berners-Lee, Tim (2001-05-01). "The Semantic Web". Scientific American. 284 (5): 34–43. Bibcode:2001SciAm.284e..34B. doi:10.1038/scientificamerican0501-34. Retrieved 2008-03-13.
2. ^ Lim, Byong-In; Choy, Kee-Hyun; Shin, Dong-Ryeol (2005). Sunderam, V.S.; van Albada, G.D.; Sloot, P.M.A.; Dongarra, J. (eds.). An Architecture for Lightweight Service Discovery Protocol. International Conference on Computational Science. Springer Berlin Heidelberg. pp. 963–966. doi:10.1007/11428862_148. ISBN 978-3-540-32118-7.

## External links[edit]

* Service Discovery S-Cube Knowledge Model
* Dong, H., Hussain, F.K., Chang, E.: Semantic Web Service matchmakers: State of the art and challenges[Online]. Concurrency and Computation: Practice and Experience 25(7) (May 2013) pp. 961–988. Accessed on June 16, 2015.
* Sun, L., Dong, H., Hussain, F.K., Hussain, O.K., Chang, E.: Cloud service selection: State-of-the-art and future research directions. Journal of Network and Computer Applications[Online] 45 (October 2014) pp. 134–150. Date accessed: 16 June 2015.