[IPP] Question about PWG 5100.7 and "document-format-details"

[IPP] Question about PWG 5100.7 and "document-format-details"

[IPP] Question about PWG 5100.7 and "document-format-details"

Kennedy, Smith (Wireless Architect) smith.kennedy at hp.com
Thu Mar 17 21:19:38 UTC 2016

Would rejecting the operation with "client-error-conflicting-attributes" be an appropriate response?


On 2016-03-17, at 3:09 PM, Michael Sweet <msweet at apple.com<mailto:msweet at apple.com>> wrote:


On Mar 17, 2016, at 5:00 PM, Kennedy, Smith (Wireless Architect) <smith.kennedy at hp.com<mailto:smith.kennedy at hp.com>> wrote:


PWG 5100.7 defined the "document-format-details" attribute, and one of its children is "document-format".  There is also a "document-format" attribute, which is essential to the proper operation of IPP in general (filtering printer description attributes and so forth).  But the definition of "document-format-details" is ambiguous in situations where "document-format" is not a "packaging" format.

If "document-format" is not a packaging format, but is rather a conventional format such as "application/pdf" or "image/pwg-raster", and "document-format-details" is provided by the Client, but the "document-format" child of "document-format-details" doesn't match "document-format", what should the Printer do?

Given the lack of firm conformance requirements, the Printer is free to return client-error-attributes-or-values-not-supported or successful-ok-ignored-or-substituted-attributes, or to ignore the value completely and just return successful-ok. (any of those is allowed by 2911)

Michael Sweet, Senior Printing System Engineer

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