McDonald, Ira wrote:
> Hi Tom,
>
> I disagree entirely with your reasoning below.
>
> The main purpose of PSI is print-by-reference. If Send-URI
> remains OPTIONAL (and therefore rarely implemented and not
> interoperable) in IPP, then gateways based on FSG PAPI/1.0
> interfaces between PSI and IPP transports will fail (unless
> the gateway fetches the referenced document, which introduces
> a different set of security issues).
>
> This isn't a percentage kind of thing. The most important
> operation in PSI is AddDocumentByReference. All of the mobile
> scenarios depend on it. Mobile devices _cannot_ fetch local
> copies of large documents, in order to use AddDocumentByValue.
Well, if mobile devices cannot fetch large documents (to display
them), then printing them is a bit useless, right? Better to just
provide web-enabled applications for wireless devices to access
when they need to handle large documents.
The only operational scenario that I see where this would make *any*
sense is when viewing a large PDF file that has been linearized
("optimized") for the web, and even then you cannot have a proxy
between the client and server or none of the byte serving (which
allows a light-weight client to view the PDF file in pieces) will
work anyways.
I have yet to be convinced that print-by-reference is anything other
than a "gee wiz" feature.
-- ______________________________________________________________________ Michael Sweet, Easy Software Products mike at easysw dot com Printing Software for UNIX http://www.easysw.com
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