Re: [OPSAWG] Fwd: New Version Notification for draft-lear-opsawg-sbom-access-00.txt

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 14 October 2020 19:41 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Eliot Lear <lear=40cisco.com@dmarc.ietf.org>, opsawg <opsawg@ietf.org>
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Date: Wed, 14 Oct 2020 15:41:42 -0400
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Subject: Re: [OPSAWG] Fwd: New Version Notification for draft-lear-opsawg-sbom-access-00.txt
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Eliot Lear <lear=40cisco.com@dmarc.ietf.org> wrote:
    > This is the same draft that was presented some time ago to you.
    > However, the emphasis is changed- MUD is not the sole means by which an
    > SBOM can be discovered.  The context will matter.

okay.

    > My request is that we discuss this in the WG, and then consider it for
    > adoption, understanding that it has a bit of a road to travel still.

I'm not sure that I understand why you are using the term "layer" in
"application-layer management system"?  Or maybe it is "application"
That section reads poorly, even though I eventually understood it.

I understand that it's an *application management system*, because it is
managing some application server.   But, I don't understand "layer" here,
which suggests "layer-7", when really the application management system
really manages all the layers?
Maybe people think of HTTP as being a kind of layer-5 or 6, rather than 7.
(But, really nothing beyond layer 4 has any meaning between OSI terminology
and reality)

Anyway, I thought that you were going to use a template for local-uri,
instead of having the enumeration of scheme?

While the set of SBOM formats is far from set in stone,  and I think that
each will have a MIME type, I want to suggest that this document make it
clear that HTTP content negotiation should be used to get the format
one wants and/or that the type returned will be tagged via Content-Type.

Should the MUD file contain a text description of what content-type(s) are
available?   Avoiding for now, any kind if enumeration, aiming just for
human consumption?

--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide