That will teach me to write an email when I'm walking out the door on Friday.
You're right Mike that I was talking about job-uuid and not job-uri. I'm just making sure we're not adding another job specifier to the uri/id mess we have now.
Thanks,
M.
From: Ira McDonald [mailto:blueroofmusic at gmail.com]
Sent: Saturday, March 05, 2011 6:14 AM
To: Michael Sweet; Ira McDonald
Cc: Yousey, Marc; ipp at pwg.org
Subject: Re: [IPP] Updated JPS3 draft posted
Hi Mike and Mark,
True, RFC 2911 allows "job-uri" alone to be specified
for *some* Job operations.
But RFC 2911/2910 do not specify the relationship
between "job-uri" and "printer-uri" (which is a bug).
So the later RFC 3510 ('ipp' URI Scheme) was unable
to specify any such relationship.
Which is why I've seen quite a few IPP implementations
that do NOT accept a "job-uri" value as HTTP request-URI
(i.e., as a protocol endpoint) - since it's implementation
dependent anyway, they simply refuse to honor stand-alone
"job-uri". I have always advised my clients to avoid the
assumption that "job-uri" is a safe protocol endpoint.
IPP Everywhere cannot really fix this ambiguity. And
just saying that "job-uri" should work won't help any.
OTOH - "printer-uri" plus "job-id" is safe and reliable.
My two cents.
Cheers,
- Ira
Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Co-Chair - IEEE-ISTO PWG IPP WG
Co-Chair - TCG Hardcopy WG
IETF Designated Expert - IPP & Printer MIB
Blue Roof Music/High North Inc
http://sites.google.com/site/blueroofmusichttp://sites.google.com/site/highnorthinc
mailto:blueroofmusic at gmail.com<mailto:blueroofmusic at gmail.com>
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On Sat, Mar 5, 2011 at 4:21 AM, Michael Sweet <msweet at apple.com<mailto:msweet at apple.com>> wrote:
On Mar 5, 2011, at 12:06 AM, Ira McDonald wrote:
> ...
> Note that our DMTF CIM_PrintInputTray class has the
> element "MediaSizeName" which we used to map from
> the Printer MIB's "prtInputMediaDimFeedDirDeclared"
> and "prtInputMediaDimFeedDirDeclared" objects.
media-size-name it is, then...
> Also note that either "job-uri" or "job-id" can be used in
> job operations, but either MUST be accompanied by the
> enclosing "printer-uri" that specifies the over-the-wire
> protocol target of the IPP over HTTP request.
Actually, only job-id needs the printer-uri. job-uri can stand alone, per 2911...
________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair
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