Re: [dispatch] Zstandard compression
Sean Leonard <dev+ietf@seantek.com> Mon, 13 November 2017 06:01 UTC
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From: Sean Leonard <dev+ietf@seantek.com>
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Date: Mon, 13 Nov 2017 14:01:06 +0800
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To: "Murray S. Kucherawy" <superuser@gmail.com>
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Subject: Re: [dispatch] Zstandard compression
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> On Nov 13, 2017, at 11:22 AM, Murray S. Kucherawy <superuser@gmail.com> wrote: > > On Mon, Nov 13, 2017 at 10:22 AM, Sean Leonard <dev+ietf@seantek.com <mailto:dev+ietf@seantek.com>> wrote: > Those documents do not specify MIME types, and I do not think this document draft-kucherawy-dispatch-zstd should do so either. The media type registration is weak: there is no way to signal inside the format what is inside other than an arbitrary stream of bytes. It is not a file archive format, or another kind of container format that identifies parts. > > Why does that imply that a media type is not appropriate? A module receiving this content for processing needs to know what format it's in, and I believe that's what these are for. Working on this. It strikes me as either…odd…or just not really that useful for the purpose. It is a format, but it’s just a format for a stream of arbitrary bytes. There is no way to label it internally beyond the implicit “application/octet-stream” type. Content-Encoding is therefore very appropriate, but that is for HTTP, not (as of yet) for mail or other messaging formats. May I ask, what is the reason why you need a media type? Let me think about it…maybe it would be good to ask the media-types ML. > > I request that we get an OID registration for this for use with Compressed Data Content Type for CMS, RFC 3274. That way it could be used with S/MIME or other formats that use CMS or S/MIME (seeing as how CMS / S/MIME are general container formats). > > Wilco. > > Surveying other container formats and doing the appropriate registrations with them in this draft would be appropriate, if one can articulate a use case in those respective formats. > > Can you suggest an example? Not offhand, just thought of those two (Content-Encoding, and RFC 3274 CompressedData media type). Well there’s TLS v1.2 compression methods. Just joking! :-) Sean > > -MSK
- [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Mark Nottingham
- Re: [dispatch] Zstandard compression Martin Thomson
- Re: [dispatch] Zstandard compression Mark Nottingham
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Mark Nottingham
- Re: [dispatch] Zstandard compression Martin Thomson
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Cullen Jennings
- Re: [dispatch] Zstandard compression Harald Alvestrand
- Re: [dispatch] Zstandard compression Sean Leonard
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Sean Leonard
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Martin J. Dürst
- Re: [dispatch] Zstandard compression Harald Alvestrand
- Re: [dispatch] Zstandard compression Sean Leonard
- Re: [dispatch] Zstandard compression Murray S. Kucherawy
- Re: [dispatch] Zstandard compression Harald Alvestrand
- Re: [dispatch] Zstandard compression John Levine