[nbs] Naming details for the API
Ran Atkinson <ran.atkinson@gmail.com> Thu, 02 December 2010 16:46 UTC
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From: Ran Atkinson <ran.atkinson@gmail.com>
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Date: Thu, 02 Dec 2010 11:48:07 -0500
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Subject: [nbs] Naming details for the API
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Hi, (I apologise if this entire note is too obvious and redundant with the existing text.) A) Service Names I would urge that any name-oriented API use "Service Names", in lieu of transport-protocol and port number. Section 5 of [1] provides a workable formal definition -- both for the set of valid "Service Name" values and also for the mapping of "Service Name" to a specific (transport-protocol + port number). It would also be good if the NBS API documentation urged implementations of the API to use DNS SRV records and also to look for mDNS/DNS-SD advertisement traffic. Both mDNS & DNS-SD are widely deployed already, for all major OSs (Windows, BSD Unix, Linux, Solaris, MacOS X, iOS, etc.). I believe the IETF is currently in Last Call to publish both of those specifications on the IETF standards-track. In this light, it is probably also worth citing [2] and [3]. 2) End-point Names A) UNICAST: DNS FQDNs are the obvious choice here, where local-scope DNS names are also allowed (e.g. host-name.local) -- for use with mDNS/DNS-SD. B) MULTICAST: I'm not sure what to do about naming IP multicasting. Clearly multicasting needs to be supported, but the best way to name dynamic IP multicast groups isn't obvious to me. I think some convention either exists (or could be created) for standardised IP multicast groups (e.g. All routers, All hosts, All OSPF routers). 3) Network-Layer Details I'd suggest that any name-oriented API be devoid of version-specific or network-protocol-specific details. That is, the exact same API ought to work well for all of the network-layer protocols active in the IETF/IRTF universe these days (e.g. HIP, ILNP, IPv4, IPv6, SHIM6 [what did I miss ?] -- listed in alphabetical order). Omission of CLNP/TP* from the above list is deliberate, but only because it has negligible deployment now, and will have less (or zero) deployment in future. 4) Other topics I need to think more about things like support for use of [ESP, AH], and maybe some other specialised things (e.g. transport-protocol-specific nonces). Cheers, Ran REFERENCES: [1] http://www.ietf.org/id/draft-ietf-tsvwg-iana-ports-09.txt [2] http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt [3] http://files.multicastdns.org/draft-cheshire-dnsext-multicastdns.txt
- [nbs] Naming details for the API RJ Atkinson
- Re: [nbs] Naming details for the API Javier Ubillos
- [nbs] Naming details for the API Ran Atkinson