The bug is now filed upstream as requested (http://www.cups.org/str.php?L3967+Qversion:1.5). I also attempted to force validate_job to zero in backend/ipp.c, as I suggested earlier. So far, however, the result of that was to get "server-error-service-unavailable" errors when the actual Print-Job request occurs!
(I should also apologise at this point, since on re-reading http://www.cups.org/documentation.php/spec-ipp.html, it looks like Validate-Job is in fact part of the core IPP specification after all, and so would be expected to exist!)
Quick update:
The bug is now filed upstream as requested (http:// www.cups. org/str. php?L3967+ Qversion: 1.5). I also attempted to force validate_job to zero in backend/ipp.c, as I suggested earlier. So far, however, the result of that was to get "server- error-service- unavailable" errors when the actual Print-Job request occurs!
(I should also apologise at this point, since on re-reading http:// www.cups. org/documentati on.php/ spec-ipp. html, it looks like Validate-Job is in fact part of the core IPP specification after all, and so would be expected to exist!)