Re: [hybi] [Uri-review] ws: and wss: schemes
"Martin J. Dürst" <duerst@it.aoyama.ac.jp> Fri, 18 September 2009 09:18 UTC
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Date: Fri, 18 Sep 2009 18:18:50 +0900
From: "\"Martin J. Dürst\"" <duerst@it.aoyama.ac.jp>
Organization: Aoyama Gakuin University
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To: Julian Reschke <julian.reschke@gmx.de>
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Cc: hybi@ietf.org, uri-review@ietf.org, "public-iri@w3.org" <public-iri@w3.org>, URI <uri@w3.org>, "public-i18n-core@w3.org" <public-i18n-core@w3.org>
Subject: Re: [hybi] [Uri-review] ws: and wss: schemes
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On 2009/09/17 20:39, Julian Reschke wrote: > Ian Hickson wrote: >> Encoding considerations. >> Characters in the host component that are excluded by the syntax >> defined above must be converted from Unicode to ASCII by applying >> the IDNA ToASCII algorithm to the Unicode host name, with both the >> AllowUnassigned and UseSTD3ASCIIRules flags set, and using the >> result of this algorithm as the host in the URI. I think this has various problems. First, it is fixed to IDNA 2003 (I think I may have said this already). IDNA 2008 is around the door. It doesn't use terms such as "ToASCII" or "AllowUnassigned". Second, if this is about resolution (rather than about generic conversion), and because this is a new scheme, it should not exclude the case that some part of a domain name (reg-name) is percent-encoded, because both RFC 3986 and 3987 allow this. Third, wording this as "characters" seems to say that this is a character-by-character operation, or that it might be applied to subsequent non-ASCII characters in groups, but ToASCII, when used, has to be applied to whole labels, not characters. Fourth, as http://tools.ietf.org/html/draft-iab-idn-encoding-00 shows in more detail, assuming that DNS is always used for resolution of reg-names, and the technology will never be used e.g. on intranets with other resolution services seems to be unnecessarily restrictive. Ideally, all the above points should be addressed by some work on the IRI front (public-iri@w3.org cc'ed), but that work isn't done yet. >> Characters in other components that are excluded by the syntax >> defined above must be converted from Unicode to ASCII by first >> encoding the characters as UTF-8 and then replacing the >> corresponding bytes using their percent-encoded form as defined in >> the URI and IRI specification. [RFC3986] [RFC3987] > > I think that's good, except that the mention of IRI in the last sentence > seems to be superfluous. RFC3986 already defines everything that is > needed here. Or is there something specific from the IRI spec you think > is relevant? (In which case it should state that more clearly). RFC 3986 indeed defines how to use %-encoding, but except for domain names (which are not involved in this case), it does not specify UTF-8, which is only done in RFC 3987. Regards, Martin. -- #-# Martin J. Dürst, Professor, Aoyama Gakuin University #-# http://www.sw.it.aoyama.ac.jp mailto:duerst@it.aoyama.ac.jp
- [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Greg Wilkins
- Re: [hybi] [Uri-review] ws: and wss: schemes Ian Hickson
- Re: [hybi] [Uri-review] ws: and wss: schemes Maciej Stachowiak
- Re: [hybi] [Uri-review] ws: and wss: schemes Chris Anderson
- Re: [hybi] [Uri-review] ws: and wss: schemes Mark Nottingham
- Re: [hybi] [Uri-review] ws: and wss: schemes Pieter Hintjens
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Greg Wilkins
- Re: [hybi] [Uri-review] ws: and wss: schemes Maciej Stachowiak
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Maciej Stachowiak
- Re: [hybi] [Uri-review] ws: and wss: schemes Maciej Stachowiak
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes David Orchard
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Ian Hickson
- Re: [hybi] [Uri-review] ws: and wss: schemes Roy T. Fielding
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Ian Hickson
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes noah_mendelsohn
- Re: [hybi] [Uri-review] ws: and wss: schemes Toby Inkster
- Re: [hybi] [Uri-review] ws: and wss: schemes Křištof Želechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Erik Wilde
- Re: [hybi] [Uri-review] ws: and wss: schemes noah_mendelsohn
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes John Kemp
- Re: [hybi] [Uri-review] ws: and wss: schemes noah_mendelsohn
- Re: [hybi] [Uri-review] ws: and wss: schemes Mark Nottingham
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Erik Wilde
- Re: [hybi] [Uri-review] ws: and wss: schemes noah_mendelsohn
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes noah_mendelsohn
- Re: [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Toby Inkster
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] ws: and wss: schemes Martin J. Dürst
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes Toby Inkster
- Re: [hybi] [Uri-review] ws: and wss: schemes David Booth
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Martin J. Dürst
- Re: [hybi] [Uri-review] ws: and wss: schemes Křištof Želechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Křištof Želechovski
- Re: [hybi] [Uri-review] ws: and wss: schemes Jamie Lokier
- Re: [hybi] [Uri-review] ws: and wss: schemes Joseph A Holsten
- Re: [hybi] [Uri-review] ws: and wss: schemes Joseph A Holsten
- Re: [hybi] [Uri-review] ws: and wss: schemes Joseph A Holsten
- Re: [hybi] [Uri-review] ws: and wss: schemes Daniel R. Tobias
- Re: [hybi] [Uri-review] ws: and wss: schemes Daniel R. Tobias
- Re: [hybi] [Uri-review] ws: and wss: schemes Daniel R. Tobias
- Re: [hybi] [Uri-review] ws: and wss: schemes Lisa Dusseault
- Re: [hybi] [Uri-review] ws: and wss: schemes Infinity Linden
- Re: [hybi] [Uri-review] ws: and wss: schemes Lloyd Wood
- Re: [hybi] [Uri-review] ws: and wss: schemes Kristof Zelechovski
- Re: [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] ws: and wss: schemes Ian Hickson
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] ws: and wss: schemes Roy T. Fielding
- Re: [hybi] ws: and wss: schemes Julian Reschke
- Re: [hybi] [Uri-review] ws: and wss: schemes Martin J. Dürst
- Re: [hybi] ws: and wss: schemes Ian Hickson