IPP>PRO - Print by reference

IPP>PRO - Print by reference

IPP>PRO - Print by reference

Scott Isaacson SISAACSON at novell.com
Fri May 30 14:57:52 EDT 1997

I thought that a "reference" in "print-by-reference" meant a URI.

If it is a URI, then the URI determines the method for "fetching".  We
do not need to do anything to IPP to define a new way to fetch.
If it is an HTTP URI, do a GET on the URL
If it is an FTP URI, use FTP, etc.

I don't see an URI like "ipp://..." being used.

I had thought about what Scott L. was suggesting about having an
attribute describe the whether the Printer supported print-by-reference
or not.  What if we made this like "notification-addresses-supported" which
is a list of URI schemes that are supported by the Printer.?


Scott A. Isaacson
Print Services Consulting Engineer
Novell Inc., 122 E 1700 S, Provo, UT 84606
V: (801) 861-7366, (800) 453-1267 x17366
F: (801) 861-4025, E: scott_isaacson at novell.com
W: http://www.novell.com

>>> Roger K Debry <rdebry at us.ibm.com> 05/30 7:00 AM >>>
So far we have said (rightly or wrongly) that the actual fetch
of the actual fetch of the referenced document was outside the
scope of IPP.  For example, an implementation might use FTP
to retrieve a document.  If this were the case, then don't we still
get by with just an origin server?   Do you thinnk we need to add
the fetch to IPP and use HTTP for this?

Roger K deBry
Senior Techncial Staff Member
Architecture and Technology
IBM Printing Systems
email: rdebry at us.ibm.com 
phone: 1-303-924-4080

---------------------- Forwarded by Roger K Debry/Boulder/IBM on 05/30/97
AM ---------------------------

        ipp-owner @ pwg.org
        05/30/97 06:55 AM
Please respond to ipp-owner at pwg.org @ internet

To: jkm @ underscore.com @ internet
cc: ipp @ pwg.org @ internet
Subject: Re: IPP>PRO - Print by reference

>>>>> "JK" == JK Martin <jkm at underscore.com> writes:

JK> We also readily agree with Roger's belief that print-by-reference
JK> should be considered a basic (ie, mandatory) requirement for IPP.

  One objection that was raised to the use of HTTP as a 'transport'
  was that it might require substantial complexity.  In response, I
  among others pointed out that only the 'origin server' requirements
  of HTTP would apply.  If print-by-reference is a MUST, then most of
  the HTTP client requirements would be equally applicable.

  As I said before, I believe that specifying how this works if
  present is a very good idea, but I believe that whether or not to
  put this feature in any given product should be a choice left to the

  This strikes me as an easy feature to describe as a very small set
  of attributes which describe whether or not print-by-reference is
  supported and if so what identity the printer is configured to use
  and any network access restrictions it may have.

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