Naming, Trading, Directory and Discovery Services (CDK â chap.9)

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Example CORBAApplicationObjectsVerticalCORBA FacilitiesHorizontalCORBA FacilitiesObject Request BrokerCORBA ServicesTrader ServiceWithin CORBA, a naming service is available as well as a trading serviceThe ORB mediates between clients & serversIan Johnson 74 Distributed Systems
Service DiscoveryService discovery is an integral part of building ad hoc, self-configuringnetworks.Mobile computing requires a time-dependent resolution of many networkrelationships where name to address bindings change frequently. (Thewhole network can reconfigure - Spontaneous ad hoc network)Services may advertise their existence in a dynamic way.Discovery protocolsThese provide the mechanisms for dynamically discovering services in anetwork, providing the necessary information to:• Search and browse for services• Choose the right service• Use the serviceCurrent Examples:• Service Location Protocol (SLP)• Universal Plug and Play (UPnP) (more correctly SSDP)• Jini• Salutation• Secure Service Discovery Service (SSDS)• Bluetooth Service Discovery ProtocolIan Johnson 75 Distributed Systems
Page 1 and 2: Naming, Trading, Directory andDisco
Page 3 and 4: Naming Services• Name AssignmentP
Page 5 and 6: DNS Name space partitioningDNS Name
Page 7 and 8: Iterative Name LookupNS2Clien213NSN
Page 9 and 10: Recursive Name ResolutionServer for
Page 11 and 12: Organisation of name services(assum
Page 13 and 14: Directory ServicesAttribute lookup,
Page 15 and 16: Naming & Directory ServicesSummaryC
Page 17 and 18: CharacteristicsCommon language betw
Page 19: Consider a Video on DemandService."
Page 23 and 24: ¡¡¡¡¡¡¡¡¡¡Service Discove
Page 25 and 26: 1 Discovery: SSDP SidebarWhat is SS

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Naming, Trading, Directory and Discovery Services (CDK â chap.9)