Constructing Service Hashes from Various Sources
This presentation explores the construction of service hashes from different sources such as service types, parameters, and locations. The discussion covers possible mappings and dependencies on upper-layer service discovery protocols, highlighting the importance of understanding diverse hashing possibilities.
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January 2015 doc.: IEEE 802.11-15/182r0 Service Hash Mapping Date: 2015-1-15 Authors: Name Company Address Phone email 161 Gajeong-dong, Yuseong-gu, Daejeon, Korea RYU Cheol ETRI +82 42 860 6604 ryuch@etri.re.kr Submission Slide 1 RYU Cheol, ETRI
January 2015 doc.: IEEE 802.11-15/182r0 Abstract This presentation is on how to construct Service Hashes from various sources such as service types, service parameters, and service location. I would like to discuss various mapping could be possible and even cannot be possible. It is dependent on upper layer service discovery protocols. Submission Slide 2 RYU Cheol, ETRI
January 2015 doc.: IEEE 802.11-15/182r0 DNS-SD All those below can be sources of hashing. Service Type only _ipp._tcp.local. (IANA assigned name or bonjour service type) _skype._tcp.local (proprietary name) Service Type with domain New\ Employee\ Page._http._tcp.dns-sd-services http._tcp._wikipedia.org Service Type with some parameters _ipp._tcp.local color-supported=yes Service Name is not the only source of hashing. Submission Slide 3 RYU Cheol, ETRI
January 2015 doc.: IEEE 802.11-15/182r0 Proxyings Automatic proxying _ipp._tcp.local _ipp._tcp.local color-supported=yes Manual proxying (or service registration) New\ Employee\ Page._http._tcp.dns-sd-services Flight\ Information._http._tcp.local skype._tcp.local http._tcp._wikipedia.org Submission Slide 4 RYU Cheol, ETRI
January 2015 doc.: IEEE 802.11-15/182r0 Mom service discovery protocol A mom shouted in a multicast packet. Come on! Breakfast is ready. A kid asked and a mommy answered. Mommy breakfast is ready? Yes in 5 minutes. How can you map the service to hash value? It is dependent on ULP. But at the worst case, we can just proxy mom s announcements. Submission Slide 5 RYU Cheol, ETRI
January 2015 doc.: IEEE 802.11-15/182r0 References IETF RFC 2782 (DNS SVR): A DNS RR for specifying the location of services DNS SRV Service Types IANA Service Name and Transport Protocol Port Number Registry Submission Slide 6 RYU Cheol, ETRI
