[Slim] Eric Rescorla's No Objection on draft-ietf-slim-negotiating-human-language-19: (with COMMENT)
Eric Rescorla <ekr@rtfm.com> Sun, 07 January 2018 01:39 UTC
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From: Eric Rescorla <ekr@rtfm.com>
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Date: Sat, 06 Jan 2018 17:39:31 -0800
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Subject: [Slim] Eric Rescorla's No Objection on draft-ietf-slim-negotiating-human-language-19: (with COMMENT)
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Eric Rescorla has entered the following ballot position for draft-ietf-slim-negotiating-human-language-19: No Objection When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-slim-negotiating-human-language/ ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- Document: draft-ietf-slim-negotiating-human-language-17.txt 1. I'm not marking this first point DISCUSS, but I do think it's important it be addressed and I trust the AD will ensure that it is. This document is ambiguous about the contents of the answer attribute. Specifically, it says: In an answer, 'hlang-send' is the language the answerer will send if using the media for language (which in most cases is one of the languages in the offer's 'hlang-recv'), and 'hlang-recv' is the language the answerer expects to receive if using the media for language (which in most cases is one of the languages in the offer's 'hlang-send'). However, the next paragraph permits >1 tag, as does the ABNF in S 6.1. Each value MUST be a list of one or more language tags per BCP 47 [RFC5646], separated by white space. BCP 47 describes mechanisms for matching language tags. Note that [RFC5646] Section 4.1 advises to "tag content wisely" and not include unnecessary subtags. So, how am I supposed to interpret an answer with >1 tag? Is this forbidden? I can imagine a number of semantics, but it's important it be clear in the document. 2. The negotiation structure here does not match that which is conventionally used with SDP, where each side indicates the formats it is prepared to receive and the other side can send any of them. Why did you use this structure? One reason you might is that you expect the answer to resolve which language is in use, however because SIP supports early media (i.e., media which is delivered prior to the answer.)
- [Slim] Eric Rescorla's No Objection on draft-ietf… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Bernard Aboba
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Bernard Aboba
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens (IETF)
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Paul Kyzivat
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Bernard Aboba
- Re: [Slim] Eric Rescorla's No Objection on draft-… Bernard Aboba
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Slim] Eric Rescorla's No Objection on draft-… Paul Kyzivat
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Paul Kyzivat
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Paul Kyzivat
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- Re: [Slim] Eric Rescorla's No Objection on draft-… Randall Gellens
- Re: [Slim] Eric Rescorla's No Objection on draft-… Gunnar Hellström
- [Slim] Updated version addresses comments receive… Randall Gellens
- Re: [Slim] Updated version addresses comments rec… Randall Gellens
- Re: [Slim] Updated version addresses comments rec… Randall Gellens