IPP Mail Archive: Re: IPP> ADM - Minutes from PWG IPP Phone Conference - 98011

Re: IPP> ADM - Minutes from PWG IPP Phone Conference - 98011

Carl Kugler (kugler@us.ibm.com)
Mon, 19 Jan 1998 19:07:33 -0500

The weakness with the MIME way is that it's either unsafe or slow -- ei=
ther you
arbitrarily pick a boundary string and hope that it doesn't appear in t=
he
binary data, or you prescan the data to make sure. Content-length avoi=
ds those
problems.

---------------------- Forwarded by Carl Kugler/Boulder/IBM on 01/19/98=
10:37 AM
---------------------------

ipp-owner@pwg.org on 01/19/98 03:25:14 AM
Please respond to walker@dazel.com @ internet
To: masinter@parc.xerox.com @ internet
cc: lstein@fapo.com @ internet, paulmo@microsoft.com @ internet, ipp@pw=
g.org @
internet, cmanros@cp10.es.xerox.com @ internet
Subject: Re: IPP> ADM - Minutes from PWG IPP Phone Conference - 98011

Larry Masinter wrote:
>
> If you use XML for the protocol mapping and yet want to get
> file data in, you might consider a protocol mapping which separates
> the print data stream from the print protocol using MIME
> multipart, e.g., "multipart/related" where the print protocol
> elements are in an XML data structure, and the binary data streams
> are encoded appropriately just with their MIME media designations
> (application/postscript, etc.).

This seemed like a nice approach to me as well. In fact, I so much
as raised it as a suggestion at the last IPP conference call (only
I being a MIME neophyte suggested "multipart/mixed"; your suggestion
sounds a lot better to me). However, my suggestion was immediately
shouted down, as "this issue had already been discussed in the past,
and a decision made".

Well, as we are re-visiting the protocol encoding at this point, I
would like to have this decision re-considered as well. It seems
like a multipart MIME message, with the protocol and data in separate
parts would be a natural solution.

...walker

--
Jim Walker <walker@dazel.com>
System Architect/DAZEL Wizard
DAZEL Corporation, Austin, TX

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