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Comments on: http://www.w3.org/TR/2004/WD-xop10-20040608/

From: Graham Klyne <gk@ninebynine.org>
Date: Tue, 15 Jun 2004 11:45:46 +0100
Message-Id: <5.1.0.14.2.20040615103709.02b2a008@127.0.0.1>
To: xmlp-comments@w3.org

With reference to:
   http://www.w3.org/TR/2004/WD-xop10-20040608/

On a quick read-through, I have a couple of comments:

...

Section 1.2:
text/xml for root multipart/related element

The choice of a text/... MIME type for this purpose seems rather, er, 
perverse to me.  The intent of text/... MIME types is for data content that 
can reasonably be read as such by a human user [1].  text/html is regarded 
by at least one of MIME's designers as a mistake [2].  I really don't think 
that an XML SOAP envelope falls into the category of human-readable 
text.  I suggest:
(a) use application/xml, or
(b) register a new application/...+xml MIME type for this purpose.

I see in section 5 you describe application/soap_xop+xml, so I guess that's 
just a typo in the examples?

...

Section 5:

Looking at:
[[
For example, if the format identified by "application/soap+xml" is to be 
packaged as XOP serializations, then a XOP-specific media type (e.g., 
"application/soap_xop+xml") MUST be registered. A XOP Package using the 
Multipart/Related packaging mechanism and serializing such an Infoset would 
have a package media type of "multipart/related" and a root media type of 
"application/soap_xop+xml".
]]

This seems a bit awkward to me.  Has any consideration been given to 
defining a single MIME content-type, say application/xop+xml, having a 
parameter to specify the original MIME type; hence:
     Content-type: 
application/xop+xml;original-content-type="application/soap+xml"

Among other things, I think this would make it easier to implement a 
completely generic XOP serializer/deserializer since no special knowledge 
of any specific MIME type (other than application/xop+xml) would be required.

...

B.1 References:

The reference to RFC 2557 mis-spells one of the authors' name (J Palme).

#g
--

[1] http://www.ietf.org/rfc/rfc2046.txt, section 3

[2] http://www.imc.org/ietf-xml-mime/mail-archive/msg00622.html



------------
Graham Klyne
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Received on Tuesday, 15 June 2004 06:47:45 GMT

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