Internet Printing Protocol/1.1: Implementor's Guide
RFC 3196

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Network Working Group                                        T. Hastings
Request for Comments: 3196                                     C. Manros
Obsoletes: 2639                                                P. Zehler
Category: Informational                                Xerox Corporation
                                                               C. Kugler
                                                 IBM Printing Systems Co
                                                                H. Holst
                                                 i-data Printing Systems
                                                           November 2001

          Internet Printing Protocol/1.1: Implementor's Guide

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2001).  All Rights Reserved.

Abstract

   This document is one of a set of documents, which together describe
   all aspects of a new Internet Printing Protocol (IPP).

Table of Contents

   1  Introduction...................................................  4
   1.1   Conformance language........................................  5
   1.2   Other terminology...........................................  6
   1.3   Issues Raised from Interoperability Testing Events..........  6
   2  IPP Objects....................................................  6
   3  IPP Operations.................................................  7
   3.1   Common Semantics............................................  7
   3.1.1  Summary of Operation Attributes............................  8
   3.1.2  Suggested Operation Processing Steps for IPP Objects....... 16
   3.1.2.1   Suggested Operation Processing Steps for all Operations. 17
   3.1.2.1.1   Validate version number............................... 18
   3.1.2.1.2   Validate operation identifier......................... 20
   3.1.2.1.3   Validate the request identifier....................... 20
   3.1.2.1.4   Validate attribute group and attribute presence and
               order................................................. 20
   3.1.2.1.4.1   Validate the presence and order of attribute groups. 20
   3.1.2.1.4.2   Ignore unknown attribute groups in the expected
                 position............................................ 21

Hastings, et al.             Informational                      [Page 1]
RFC 3196             Internet Printing Protocol/1.1        November 2001

   3.1.2.1.4.3   Validate the presence of a single occurrence of
                 required Operation attributes....................... 21
   3.1.2.1.5   Validate the values of the REQUIRED Operation
               attributes............................................ 29
   3.1.2.1.6   Validate the values of the OPTIONAL Operation
               attributes............................................ 33
   3.1.2.2   Suggested Additional Processing Steps for Operations
             that Create/Validate Jobs and Add Documents............. 37
   3.1.2.2.1   Default "ipp-attribute-fidelity" if not supplied...... 37
   3.1.2.2.2   Check that the Printer object is accepting jobs....... 38
   3.1.2.2.3   Validate the values of the Job Template attributes.... 38
   3.1.2.3   Algorithm for job validation............................ 39
   3.1.2.3.1   Check for conflicting Job Template attributes values.. 45
   3.1.2.3.2   Decide whether to REJECT the request.................. 46
   3.1.2.3.3   For the Validate-Job operation, RETURN one of the
               success status codes.................................. 48
   3.1.2.3.4   Create the Job object with attributes to support...... 48
   3.1.2.3.5   Return one of the success status codes................ 50
   3.1.2.3.6   Accept appended Document Content...................... 50
   3.1.2.3.7   Scheduling and Starting to Process the Job............ 50
   3.1.2.3.8   Completing the Job.................................... 50
   3.1.2.3.9   Destroying the Job after completion................... 51
   3.1.2.3.10  Interaction with "ipp-attribute-fidelity"............. 51
   3.1.2.3.11  Character set code conversion support................. 51
   3.1.2.3.12  What charset to return when an unsupported charset is
               requested (Issue 1.19)?....... ....................... 52
   3.1.2.3.13  Natural Language Override (NLO)....................... 53
   3.1.3  Status codes returned by operation......................... 55
   3.1.3.1   Printer Operations...................................... 55
   3.1.3.1.1   Print-Job............................................. 55
   3.1.3.1.2   Print-URI............................................. 58
   3.1.3.1.3   Validate-Job.......................................... 58
   3.1.3.1.4   Create-Job............................................ 58
   3.1.3.1.5   Get-Printer-Attributes................................ 59