Here it is. I would like to have your comments on this in tomorrows
PWG IPP phone conference, so we can pass it on to the IETF shortly afterwards.
You can obviously also send comments to the IPP DL.
Carl-Uno
---Internet Printing Protocol (ipp) Charter
--------------------------------------------------------------------------- In addition to this official charter maintained by the IETF Secretariat, there is additional information about this working group on the Web at:
* Additional Internet Printing Protocol Page: http://www.pwg.org/ipp
---------------------------------------------------------------------------
Chair(s)
* Carl-Uno Manros <cmanros@cp10.es.xerox.com> * Steve Zilles <szilles@adobe.com>
Applications Area Director(s):
* Keith Moore <moore+iesg@cs.utk.edu> * Harald Alvestrand <Harald.T.Alvestrand@uninett.no>
Area Advisor
* Keith Moore <moore+iesg@cs.utk.edu>
Mailing List Information
* General Discussion:ipp@pwg.org * To Subscribe: ipp-request@pwg.org * Archive: ftp://ftp.pwg.org/pub/pwg/ipp/
Description of Working Group
There is currently no universal standard for printing. Several protocols are in use, but each has limited applicability and none can be considered the prevalent one. This means that printer vendors have to implement and support a number of different protocols and protocol variants. There is a need to define a protocol which can cover the most common situations for printing on the Internet.
The goal of this working group is to develop requirements for Internet Printing and to describe a model and semantics for Internet Printing.
The further goal is to define a new application level Internet Printing Protocol for the following core functions:
- for a user to find out about a printer's capabilities - for a user to submit print jobs to a printer - for a user to find out the status of a printer or a print job - for a user to cancel a previously submitted job
The Internet Print Protocol is a client-server type protocol which should allow the server side to be either a separate print server or a printer with embedded networking capabilities. The focus of this effort is optimized for printers, but might be applied to other output devices. These are outside the scope of this working group.
The working group will also define a set of directory attributes that can be used to ease finding printers on the network.
The Internet Print Protocol will include mechanisms to ensure adequate security protection for materials to be printed, including at a minimum mechanisms for mutual authentication of client and server and mechanisms to protect the confidentiality of communications between client and server.
Finally, the IPP working group will produce recommendations for interoperation of LPR clients with IPP servers, and IPP clients with LPR servers. These recommendations will include instructions for both the translation of the LPR protocol onto IPP and the translation of the IPP protocol onto LPR. However, there is no expectation to provide new IPP features to LPR clients, nor is there an explicit requirement to translate LPR extensions to IPP, beyond those features available in the 4.2BSD UNIX implementation of LPR, and which are still useful today.
Subjects currently out of scope for this working group are:
- protection of intellectual property rights - fax input - scanning
The working group shall strive to coordinate its activities with other printing-related standards bodies, without the need to be strictly bound by their standards definitions. These groups are:
- ISO/IEC JTC 1/SC 18/WG 4 on Document Printing Application (ISO/IEC 10175 parts 1 - 3) - The Object Management Group (OMG) on OMG Printing Facility (in development) - IEEE (POSIX System Administration - Part 4: Printing Interfaces) - X/Open (Printing Systems Interoperabilty Specification) - The Printer Working Group
Goals and Milestones
Done - Mar 97 Submit Internet Printing Protocol: Requirements and Scenarios as an Internet-Draft. Done - Mar 97 Submit Internet Printing Protocol/1.0: Model and Semantics as an Internet-Draft. Done - Mar 97 Submit Internet Printing Protocol/1.0: Directory Schema as an Internet-Draft. Done - Apr 97 Review of specifications in IETF meeting in Memphis, TN, USA Jun 97 Submit Internet Printing Protocol/1.0: Security as an Internet-Draft. Jun 97 Submit Internet Printing Protocol/1.0: Encoding of Operations as an Internet-Draft. Jun 97 Submit Internet Printing Protocol/1.0: Profile for running IPP over HTTP 1.1 as an Internet-Draft. Jul 97 Submit revised Internet-Drafts for all previously mentioned documents. Jul 97 Produce At least 2 implemented prototypes. Jul 97 Submit Internet Printing Protocol/1.0: Profile for running IPP over HTTP 1.1 as an Internet-Draft. Jul 97 Submit Mappings between IPP and RFC 1179 as an Internet-Draft. Jul 97 Produce at least 2 implemented prototypes. Aug 97 Review of all Internet-Drafts in Munich meeting of the IETF. Sep 97 Submit Requirements for an Internet Printing Protocol I-D and Mappings between IPP and RFC 1179 I-D to IESG for publication as Informational RFCs. Sep 97 Submit all other I-Ds to the IESG for consideration as Proposed Standards.
Current Internet-Drafts
* Requirements for an Internet Printing Protocol (97837 bytes) * Internet Printing Protocol/1.0: Model and Semantics (226320 bytes) * Internet Printing Protocol/1.0: Directory Schema (29564 bytes)
No Request for Comments
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Carl-Uno Manros Principal Engineer - Advanced Printing Standards - Xerox Corporation 701 S. Aviation Blvd., El Segundo, CA, M/S: ESAE-231 Phone +1-310-333 8273, Fax +1-310-333 5514 Email: manros@cp10.es.xerox.com