Minutes from PWG IPP Phone Conference - 980114
Attending:
Carl-Uno Manros
Don Wright
Scott Isaacson
Bob Herriot
Tom Hastings
Paul Moore
Peter Zehler
Ron Bergman
Keith Carter
Swen Johnson
Carl Kugler
Steve Gebert
Jim Walker
Harry Lewis
Randy Turner
Ira Mcdonald
Xavier Riley
One more gentleman from Novell (who's name I couldn't read afterwards!)
The main agenda point was to discuss Paul Moore's suggestion to examine the
use of XML to carry the protocol information which is currently in the
application/ipp MIME type.
Paul explained that the Microsoft Web Architecture team wanted to examine
the potential use of XML in IPP in order to align our protocol solution
with other standardization projects such as WEBDAV, which have already
jumped onto the XML bandwagon. He offered to have a strawman proposal ready
for presentation at the PWG IPP meeting in Maui on January 28th. Paul would
show up for the meeting and also bring along a Microsoft Web/XML expert.
It was agreed that this was a reasonable way to proceed for now, but it was
also clear that the group had not yet bought into this approach.
A number of comments were offered:
Tom Hastings has written up a small document listing the requirements for a
new protocol mapping, which has been distrubuted to the DL. Paul Moore
promissed to make sure that that list was studied in writing up the new
proposal.
Bob Herriot said that he had already stated his own analysis to try to
determine if a mapping to XML was feasible. Some initial ideas have already
been sent to the DL. He had identified a couple of issues, the most
important one seems to be how we get the document data in - can they form
part of the XML structure or do they have to be in a separate file? Bob
will try to verify any XML issues that come up with Sun experts that are
active in the XML project.
Peter Zehler wanted to get better information about the extra footprint
that an XML parser would take up in a small printer, compared to our
current solution.
It was also pointed out that the W3C has not yet ratified XML as an
official Recommendation; voting closes on January 20th.
Scott Isaacson pointed out that the Microsoft idea about also introducing
new HTTP methods was a separate subject that should be discussed
independently from the XML discussion. It seemed to be little or no
interest in the group to go over that subject again, which has been
extensively discussed during last year.
Paul More undertook to not only provide the new draft solution, but also to
come up with some convincing rationale for why we should consider the change.
It was also requested to set up a phone conference into the Maui meeting
for people who are unable to attend. Carl-Uno will organize that in
collaboration with Larry Stein who is making the conference arrangements
for Maui. The phone conference will be held on January 28th, 1 - 3 pm local
time (which is 3 - 5 pm PST and 6 - 8 pm EST), mark your calendars. So far,
20 people had signed up to be present in Maui on January 28th. I few more
might come due to this agenda change. Paul Moore will make sure that the
Microsoft input is available on the IPP DL on the day before the meeting.
On the IPP meeting agenda we will now reserve the time from 10:30 am to at
most 5 pm on the 28th for discussion of the prosed new protocol mapping,
which means that we will shorten the time previously planned to discuss
possible future extensions to IPP. Some, or all, of that discussion will be
moved to the following day, during which we will also discuss
interoperability testing.
The rest of the phone conference was devoted to some detailed comments
about the Model & Semantics document. Scott Isaacson will document the
final results of those discussions in the latest draft, which has actually
already been distributed to the DL carrying the date January 16th. This
draft is NOT expected to change further.
Next week's phone conference will review any new information that has come
up on the DL in the meantime.
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Carl-Uno
Carl-Uno Manros
Principal Engineer - Advanced Printing Standards - Xerox Corporation
701 S. Aviation Blvd., El Segundo, CA, M/S: ESAE-231
Phone +1-310-333 8273, Fax +1-310-333 5514
Email: manros at cp10.es.xerox.com