Doc.: IEEE 802.11-15/182r0 Submission January 2015 RYU Cheol, ETRISlide 1 Service Hash Mapping Date:...
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doc.: IEEE 802.11-15/182r0 Submission January 2015 RYU Cheol , Slide 1 Service Hash Mapping Date: 2015-1-15 Authors: N am e C om pany A ddress Phone em ail RY U Cheol ETRI 161 G ajeong-dong, Y useong-gu, D aejeon, K orea +82 42 860 6604 ryuch@ etri.re.kr
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Transcript of Doc.: IEEE 802.11-15/182r0 Submission January 2015 RYU Cheol, ETRISlide 1 Service Hash Mapping Date:...
doc.: IEEE 802.11-15/182r0
Submission
January 2015
RYU Cheol, ETRI
Slide 1
Service Hash Mapping
Date: 2015-1-15
Name Company Address Phone email
RYU Cheol ETRI 161 Gajeong-dong,
Yuseong-gu, Daejeon, Korea
+82 42 860 6604 [email protected]
Authors:
doc.: IEEE 802.11-15/182r0
Submission
January 2015
RYU Cheol, ETRI
Slide 2
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.
doc.: IEEE 802.11-15/182r0
Submission
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.
January 2015
RYU Cheol, ETRI
Slide 3
doc.: IEEE 802.11-15/182r0
Submission
• 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
Proxyings
January 2015
RYU Cheol, ETRI
Slide 4
doc.: IEEE 802.11-15/182r0
Submission
• 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 de-pendent on ULP. But at the worst case, we can just proxy mom’s announcements.
Mom service discovery protocol
January 2015
RYU Cheol, ETRI
Slide 5
doc.: IEEE 802.11-15/182r0
Submission
• 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
References
January 2015
RYU Cheol, ETRI
Slide 6
