Re: [Insipid] publishing draft-kaplan session-id as historic
Hadriel Kaplan <HKaplan@acmepacket.com> Wed, 13 March 2013 22:43 UTC
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From: Hadriel Kaplan <HKaplan@acmepacket.com>
To: Robert Sparks <rjsparks@nostrum.com>
Thread-Topic: [Insipid] publishing draft-kaplan session-id as historic
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Date: Wed, 13 Mar 2013 22:43:44 +0000
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Cc: "<insipid@ietf.org>" <insipid@ietf.org>
Subject: Re: [Insipid] publishing draft-kaplan session-id as historic
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Yes sorry I should have been clearer - I realize I'll have to edit the doc to actually submit, I just meant using 03 as the version vs. 02 or 01 or whatever. -hadriel On Mar 13, 2013, at 5:04 PM, Robert Sparks <rjsparks@nostrum.com> wrote: > On 3/13/13 4:36 PM, Hadriel Kaplan wrote: >> From today's meeting action I took... below was the email. >> The difference between draft-kaplan-dispatch-session-id-03 and 02 can be seen here: >> >> http://tools.ietf.org/rfcdiff?url2=draft-kaplan-dispatch-session-id-03.txt >> >> It did not change the ABNF nor protocol rules. Therefore I propose to submit 03 as independent submission to the RFC Editor, for 'Historic' status. Or 'Epic' status if they have that. :) > It wouldn't be -03 as is - there needs to be an editing pass explaining this document's this is a proprietary something that may be in the wild. The text should be touched to make it an exposition (This is what you would have seen) vs a specification (this is what you should do). > > RjS > >> >> -hadriel >> >> >> On Aug 17, 2012, at 1:47 PM, Hadriel Kaplan <HKaplan@acmepacket.com> wrote: >> >>> When we talked about this in Vancouver I was thinking there wouldn't be any problem going to/from UUID syntax, because going to/from UUIDs in H.323 was talked about a long, long time ago for session-id. But I forgot about the bug in the draft-kaplan ABNF... >>> >>> Since version 01 of draft-kaplan-sip-session-id in 2008, which later became draft-kaplan-dispatch-session-id, the rules for generating the session-id always made it lower-case *hex* characters. I.e., the g-z range wasn't actually possible. The ABNF for it didn't get fixed until draft-kaplan-dispatch-session-id-01 in April 2010, but that also dropped it to 16 characters of hex because the algorithm changed, and then 3 months later reverted back to 32 characters and the correct ABNF. >>> >>> So that begs the question of *which* version of draft-kaplan we want to be backwards compatible with. Since draft-kaplan-dispatch-session-id-01 only existed for 3 months, I think we can ignore that one. And since everything else only used hex characters, except the initial 00-draft which itself only existed for 4 months, I think we can ignore that one too. >>> >>> Therefore, as far as I can tell we shouldn't have a problem converting draft-kaplan session-ids to/from UUIDs for H.323/whatever. >>> >>> -hadriel >>> >>> >>> On Aug 14, 2012, at 4:27 PM, Christer Holmberg wrote: >>> >>>> Hi, >>>> >>>> In Vancouver, I expressed a wish to make the INSIPID mechanism backward compatible with the draft-kaplan-session-id one, the reason being that it has been around for a relatively long time, and has been implemented and deployed. >>>> >>>> I compared the suggested draft-jones solution with the draft-kaplan solution, and I think there are ways to achieve backward compability. >>>> >>>> >>>> -------------- >>>> >>>> >>>> FIRST, looking purely at the ABNF syntax: >>>> >>>> The jones ABNF is: >>>> >>>> >>>> Session-ID-UUID = "Session-ID-UUID" HCOLON UUID >>>> >>>> >>>> >>>> The kaplan ABNF is: >>>> >>>> >>>> >>>> Session-ID = "Session-ID" HCOLON sess-id >>>> >>>> *( SEMI generic-param ) >>>> >>>> sess-id = 32(DIGIT / %x61-7A) ; 32 chars of [0-9a-z] >>>> >>>> >>>> >>>> >>>> >>>> Now, assuming 32 chars is enough to carry ONE UUID, jones applications could put the SECOND UUID in a header field parameter (generic-param), rather than combining it with the received UUID. >>>> >>>> >>>> >>>> Of course, the first UUDI (carried in sess-id) can only contains characters 0-9 and a-z. >>>> >>>> >>>> >>>> A UUID can contain characters 0-9 and a-f and A-F. >>>> >>>> >>>> >>>> So, a jones entity would have to be prepared to receive g-z. >>>> >>>> >>>> >>>> And, as kaplan entity is not prepared to receive capital A-F, a jones entity would have to only use small letters. But, that should not be a problem, afaik, as they have the same meaning as far as UUID is concerned. >>>> >>>> >>>> >>>> -------------- >>>> >>>> >>>> >>>> SECOND, looking at it would work functionwise: >>>> >>>> >>>> >>>> There are two main alternatives: >>>> >>>> >>>> >>>> >>>> >>>> 1. Second UUID is added even when one entity is kaplan compliant >>>> >>>> 2. Second UUID is not added when one entity is kaplan compliant >>>> >>>> >>>> >>>> >>>> >>>> Alternative 1: >>>> >>>> >>>> >>>> When a kaplan entity inserts the first UUID (I use that as a general term, eventhough a kaplan entity does not use UUIDs), one must assume that it is prepared to receive a response from a jones entity which has added the second UUID into the header field parameter. >>>> >>>> >>>> >>>> When a jones entity inserts the first UUID, one must assume that it is prepared to receive a response from a kaplan entity where the second UUID has *not* been added. >>>> >>>> >>>> >>>> >>>> >>>> Alternative 2: >>>> >>>> >>>> >>>> When a kaplan entity inserts the first UUID, the jones entity detects (using some identify-a-kaplan-entity mechanism) that it comes from a kaplan entity, so it does not insert a seoncd UUID in the first place. >>>> >>>> >>>> >>>> As in alternative 1, when a jones entity inserts the first UUID, it has to be prepared to receive a response where the second UUID has not been added (the identify-a-kaplan-entity mechanism might also inform the jones entity that the response comes from a kaplan entity. >>>> >>>> >>>> >>>> >>>> >>>> -------------- >>>> >>>> >>>> >>>> Now, there will of course be cases, where two UUIDs are required, that won't work. But, kaplan entities would be able to use the session-id for whatever they've used it so far. >>>> >>>> >>>> >>>> >>>> >>>> Regards, >>>> >>>> >>>> >>>> Christer >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> insipid mailing list >>>> insipid@ietf.org >>>> https://www.ietf.org/mailman/listinfo/insipid >>> _______________________________________________ >>> insipid mailing list >>> insipid@ietf.org >>> https://www.ietf.org/mailman/listinfo/insipid >> _______________________________________________ >> insipid mailing list >> insipid@ietf.org >> https://www.ietf.org/mailman/listinfo/insipid > > _______________________________________________ > insipid mailing list > insipid@ietf.org > https://www.ietf.org/mailman/listinfo/insipid
- [Insipid] Backward compability between draft-jone… Christer Holmberg
- Re: [Insipid] Backward compability between draft-… R.Jesske
- Re: [Insipid] Backward compability between draft-… R.Jesske
- Re: [Insipid] Backward compability between draft-… Shida Schubert
- Re: [Insipid] Backward compability between draft-… Andrew Allen
- Re: [Insipid] Backward compability between draft-… Leis, Peter (NSN - DE/Munich)
- Re: [Insipid] Backward compability between draft-… VAN GEEL Jan (CIS/SCC)
- Re: [Insipid] Backward compability between draft-… DOLLY, MARTIN C
- Re: [Insipid] Backward compability between draft-… Dawes, Peter, Vodafone Group
- Re: [Insipid] Backward compability between draft-… Hadriel Kaplan
- [Insipid] session-id ABNF (Was: Backward compabil… Hadriel Kaplan
- Re: [Insipid] Backward compability between draft-… Paul E. Jones
- Re: [Insipid] Backward compability between draft-… Hadriel Kaplan
- Re: [Insipid] Backward compability between draft-… Christer Holmberg
- Re: [Insipid] Backward compability between draft-… Paul E. Jones
- Re: [Insipid] Backward compability between draft-… Hadriel Kaplan
- Re: [Insipid] Backward compability between draft-… Paul E. Jones
- Re: [Insipid] Backward compability between draft-… Atle Monrad
- Re: [Insipid] Backward compability between draft-… James Polk
- Re: [Insipid] Backward compability between draft-… Christer Holmberg
- Re: [Insipid] Backward compability between draft-… Atle Monrad
- Re: [Insipid] Backward compability between draft-… Paul E. Jones
- Re: [Insipid] Backward compability between draft-… Christer Holmberg
- Re: [Insipid] Backward compability between draft-… Paul E. Jones
- Re: [Insipid] Backward compability between draft-… Christer Holmberg
- Re: [Insipid] Backward compability between draft-… Paul E. Jones
- [Insipid] publishing draft-kaplan session-id as h… Hadriel Kaplan
- Re: [Insipid] publishing draft-kaplan session-id … Robert Sparks
- Re: [Insipid] publishing draft-kaplan session-id … Hadriel Kaplan
- Re: [Insipid] publishing draft-kaplan session-id … Atle Monrad
- Re: [Insipid] publishing draft-kaplan session-id … DRAGE, Keith (Keith)
- Re: [Insipid] publishing draft-kaplan session-id … James Polk
- Re: [Insipid] publishing draft-kaplan session-id … DRAGE, Keith (Keith)
- Re: [Insipid] publishing draft-kaplan session-id … Mary Barnes
- Re: [Insipid] publishing draft-kaplan session-id … Hadriel Kaplan