draft-ietf-ipp-req-03.txt   rfc2567.txt 
INTERNET DRAFT F.D. Wright, Lexmark International Network Working Group F.D. Wright
<draft-ietf-ipp-req-03.txt> Request for Comments: 2567 Lexmark International
November 16, 1998 Expires: May 16, 1999 Category: Experimental April 1999
Design Goals for an Internet Printing Protocol Design Goals for an Internet Printing Protocol
STATUS OF THIS MEMO Status of this Memo
This document is an Internet-Draft. Internet-Drafts are working
documents of the Internet Engineering Task Force (IETF), its areas, and
its working groups. Note that other groups may also distribute working
documents as Internet-Drafts.
Internet-Drafts are draft documents valid for a maximum of six months This memo defines an Experimental Protocol for the Internet
and may be updated, replaced, or obsoleted by other documents at any community. It does not specify an Internet standard of any kind.
time. It is inappropriate to use Internet-Drafts as reference material Discussion and suggestions for improvement are requested.
or to cite them other than as ''work in progress.'' Distribution of this memo is unlimited.
To learn the current status of any Internet-Draft, please check the Copyright Notice
''1id-abstracts.txt'' listing contained in the Internet-Drafts Shadow
Directories on ftp.is.co.za (Africa), nic.nordu.net (Europe),
munnari.oz.au (Pacific Rim), ftp.ietf.org (US East Coast), or
ftp.isi.edu (US West Coast).
Abstract Copyright (C) The Internet Society (1999). All Rights Reserved.
This document is one of a set of documents, which together describe all IESG Note
aspects of a new Internet Printing Protocol (IPP). IPP is an
application level protocol that can be used for distributed printing
using Internet tools and technologies. This document takes a broad look
at distributed printing functionality, and it enumerates real-life
scenarios that help to clarify the features that need to be included in
a printing protocol for the Internet. It identifies requirements for
three types of users: end users, operators, and administrators. The
design goals document calls out a subset of end user requirements that
are satisfied in IPP/1.0. Operator and administrator requirements are
out of scope for version 1.0.
Expires May 16, 1999 This document defines an Experimental protocol for the Internet
The full set of IPP documents includes: community. The IESG expects that a revised version of this protocol
will be published as Proposed Standard protocol. The Proposed
Standard, when published, is expected to change from the protocol
defined in this memo. In particular, it is expected that the
standards-track version of the protocol will incorporate strong
authentication and privacy features, and that an "ipp:" URL type will
be defined which supports those security measures. Other changes to
the protocol are also possible. Implementers are warned that future
versions of this protocol may not interoperate with the version of
IPP defined in this document, or if they do interoperate, that some
protocol features may not be available.
Design Goals for an Internet Printing Protocol (this document) The IESG encourages experimentation with this protocol, especially in
combination with Transport Layer Security (TLS) [RFC2246], to help
determine how TLS may effectively be used as a security layer for
IPP.
Rationale for the Structure and Model and Protocol for the Abstract
Internet Printing Protocol [IPP-RAT]
Internet Printing Protocol/1.0: Model and Semantics [IPP-MOD]
Internet Printing Protocol/1.0: Encoding and Transport [IPP-PRO]
Internet Printing Protocol/1.0: Implementer's Guide [IPP-IIG]
Mapping between LPD and IPP Protocols [IPP LPD] This document is one of a set of documents, which together describe
all aspects of a new Internet Printing Protocol (IPP). IPP is an
application level protocol that can be used for distributed printing
using Internet tools and technologies. This document takes a broad
look at distributed printing functionality, and it enumerates real-
life scenarios that help to clarify the features that need to be
included in a printing protocol for the Internet. It identifies
requirements for three types of users: end users, operators, and
administrators. The design goals document calls out a subset of end
user requirements that are satisfied in IPP/1.0. Operator and
administrator requirements are out of scope for version 1.0.
The "Rationale for the Structure and Model and Protocol for the Internet The full set of IPP documents includes:
Printing Protocol" document describes IPP from a high level view,
defines a roadmap for the various documents that form the suite of IPP
specifications, and gives background and rationale for the IETF working
group's major decisions.
The "Internet Printing Protocol/1.0: Model and Semantics" document Design Goals for an Internet Printing Protocol (this document)
describes a simplified model consisting of abstract objects, their Rationale for the Structure and Model and Protocol for the
attributes, and their operations that is independent of encoding and Internet Printing Protocol [RFC2568]
transport. The model consists of a Printer and a Job object. The Job Internet Printing Protocol/1.0: Model and Semantics [RFC2568]
optionally supports multiple documents. IPP 1.0 semantics allow end- Internet Printing Protocol/1.0: Encoding and Transport [RFC2565]
users and operators to query printer capabilities, submit print jobs, Internet Printing Protocol/1.0: Implementer's Guide [ipp-iig]
inquire about the status of print jobs and printers, and cancel print Mapping between LPD and IPP Protocols [RFC2569]
jobs. This document also addresses security, internationalization, and
directory issues.
The "Internet Printing Protocol/1.0: Encoding and Transport" document is The "Rationale for the Structure and Model and Protocol for the
a formal mapping of the abstract operations and attributes defined in Internet Printing Protocol" document describes IPP from a high level
the model document onto HTTP/1.1. It defines the encoding rules for a view, defines a roadmap for the various documents that form the suite
new Internet media type called "application/ipp". of IPP specifications, and gives background and rationale for the
IETF working group's major decisions.
The "Internet Printing Protocol/1.0: Implementer's Guide" document gives The "Internet Printing Protocol/1.0: Model and Semantics" document
insight and advice to implementers of IPP clients and IPP objects. It describes a simplified model consisting of abstract objects, their
is intended to help them understand IPP/1.0 and some of the attributes, and their operations that is independent of encoding and
considerations that may assist them in the design of their client and/or transport. The model consists of a Printer and a Job object. The
IPP object implementations. For example, a typical order of processing Job optionally supports multiple documents. IPP 1.0 semantics allow
requests is given, including error checking. Motivation for some of the end-users and operators to query printer capabilities, submit print
specification decisions is also included. jobs, inquire about the status of print jobs and printers, and cancel
print jobs. This document also addresses security,
internationalization, and directory issues.
The "Mapping between LPD and IPP Protocols" document gives some advice The "Internet Printing Protocol/1.0: Encoding and Transport" document
to implementers of gateways between IPP and LPD (Line Printer Daemon) is a formal mapping of the abstract operations and attributes defined
implementations. in the model document onto HTTP/1.1. It defines the encoding rules
for a new Internet media type called "application/ipp".
Expires: May 16, 1999 The "Internet Printing Protocol/1.0: Implementer's Guide" document
TABLE OF CONTENTS gives insight and advice to implementers of IPP clients and IPP
objects. It is intended to help them understand IPP/1.0 and some of
the considerations that may assist them in the design of their client
and/or IPP object implementations. For example, a typical order of
processing requests is given, including error checking. Motivation
for some of the specification decisions is also included.
1. INTRODUCTION.......................................................5 The "Mapping between LPD and IPP Protocols" document gives some
2. TERMINOLOGY........................................................5 advice to implementers of gateways between IPP and LPD (Line Printer
3. DESIGN GOALS.......................................................7 Daemon) implementations.
3.1. End-user.......................................................7
3.1.1. Finding or locating a printer..............................7
3.1.2. Create an instance of the printer..........................7
3.1.3. Viewing the status and capabilities of a printer...........8
3.1.4. Submitting a print job.....................................8
3.1.5. Viewing the status of a submitted print job................9
3.1.6. Canceling a Print Job.....................................10
3.2. Operator (NOT REQUIRED FOR V1.0)..............................10
3.2.1. Alerting..................................................10
3.2.2. Changing Print and Job Status.............................10
3.3. Administrator (NOT REQUIRED FOR v1.0).........................11
4. OBJECTIVES OF THE PROTOCOL........................................12
4.1. SECURITY CONSIDERATIONS.......................................12
4.2. Interaction with LPD (RFC1179)................................13
4.3. Extensibility.................................................13
4.4. Firewalls.....................................................14
4.5. Internationalization..........................................14
5. IPP SCENARIOS.....................................................15
5.1. Printer Discovery.............................................16
5.2. Driver Installation...........................................17
5.3. Submitting a Print Job........................................17
5.4. Getting Status/Capabilities...................................18
5.5. Asynchronous Notification.....................................19
5.6. Job Canceling.................................................19
6. Security Considerations...........................................20
7. COPYRIGHT.........................................................21
8. REFERENCES........................................................22
9. ACKNOWLEDGMENTS...................................................23
10. AUTHOR'S ADDRESS.................................................23
11. APPENDIX - DETAILED SCENARIOS....................................24
11.1. Printer discovery within an enterprise.......................24
11.2. Printer discovery across enterprises.........................26
11.3. Printer discovery on the Internet -logical operations........27
11.4. Printer discovery on the Internet - authentication...........28
11.5. Driver Download..............................................29
11.6. Submitting a print job as a file.............................30
11.7. Submitting a print job with two documents....................31
11.8. Submitting a print job as a file, printing fails.............32
11.9. Submitting a print job with authentication, PRIVACY and payment
...................................................................32
11.10. Submitting a print job with decryption error................34
11.11. Submitting a print job with authentication..................35
11.12. Submitting a print job generated dynamically................36
11.13. Submitting a print job with a Printer jam - CANCELED........37
11.14. Submitting a print job with a Printer jam - recovered.......38
11.15. Submitting a print job with server pull.....................39
Expires: May 16, 1999 TABLE OF CONTENTS
11.16. Submitting a print job with referenced resources............40
11.17. Getting Capabilities........................................41
11.17.1. Submission Attributes...................................41
11.17.2. Printer Capabilities....................................41
11.18. Getting Status..............................................42
11.18.1. Printer State/Status....................................42
11.18.2. Job Status..............................................42
11.18.3. Status of All My Jobs...................................42
11.19. Asynchronous Notification...................................43
11.19.1. Job Completion..........................................43
11.19.2. Job Complete with Data..................................43
11.19.3. Print Job Fails.........................................43
11.20. Cancel a job................................................44
11.21. End to end Scenario - within an enterprise..................45
11.22. End to end Scenario - across enterprises....................47
11.23. End to End Scenario - on the internet.......................50
Expires: May 16, 1999 1. INTRODUCTION.....................................................4
2. TERMINOLOGY......................................................4
3. DESIGN GOALS.....................................................6
3.1. End-user.......................................................6
3.1.1. Finding or locating a printer................................6
3.1.2. Create an instance of the printer............................7
3.1.3. Viewing the status and capabilities of a printer.............7
3.1.4. Submitting a print job.......................................8
3.1.5. Viewing the status of a submitted print job..................9
3.1.6. Canceling a Print Job........................................9
3.2. Operator (NOT REQUIRED FOR V1.0)...............................9
3.2.1. Alerting.....................................................9
3.2.2. Changing Print and Job Status...............................10
3.3. Administrator (NOT REQUIRED FOR v1.0).........................10
4. OBJECTIVES OF THE PROTOCOL......................................10
4.1. SECURITY CONSIDERATIONS.......................................11
4.2. Interaction with LPD (RFC1179)................................12
4.3. Extensibility.................................................12
4.4. Firewalls.....................................................13
4.5. Internationalization..........................................13
5. IPP SCENARIOS...................................................13
5.1. Printer Discovery.............................................14
5.2. Driver Installation...........................................15
5.3. Submitting a Print Job........................................15
5.4. Getting Status/Capabilities...................................16
5.5. Asynchronous Notification.....................................17
5.6. Job Canceling.................................................17
6. Security Considerations.........................................18
7. REFERENCES......................................................18
8. ACKNOWLEDGMENTS.................................................19
9. AUTHOR'S ADDRESS................................................19
10. APPENDIX - DETAILED SCENARIOS..................................20
10.1. Printer discovery within an enterprise.......................20
10.2. Printer discovery across enterprises.........................21
10.3. Printer discovery on the Internet -logical operations........21
10.4. Printer discovery on the Internet - authentication...........22
10.5. Driver Download..............................................23
10.6. Submitting a print job as a file.............................24
10.7. Submitting a print job with two documents....................24
10.8. Submitting a print job as a file, printing fails.............25
10.9. Submitting a print job with authentication, PRIVACY and
payment......................................................26
10.10. Submitting a print job with decryption error................27
10.11. Submitting a print job with authentication..................28
10.12. Submitting a print job generated dynamically................29
10.13. Submitting a print job with a Printer jam - CANCELED........29
10.14. Submitting a print job with a Printer jam - recovered.......30
10.15. Submitting a print job with server pull.....................31
10.16. Submitting a print job with referenced resources............32
10.17. Getting Capabilities........................................33
10.17.1. Submission Attributes.....................................33
10.17.2. Printer Capabilities......................................33
10.18. Getting Status..............................................34
10.18.1. Printer State/Status......................................34
10.18.2. Job Status................................................34
10.18.3. Status of All My Jobs.....................................34
10.19. Asynchronous Notification...................................35
10.19.1. Job Completion............................................35
10.19.2. Job Complete with Data....................................35
10.19.3. Print Job Fails...........................................35
10.20. Cancel a job................................................36
10.21. End to end Scenario - within an enterprise..................36
10.22. End to end Scenario - across enterprises....................37
10.23. End to End Scenario - on the internet.......................40
11. Full Copyright Statement.......................................43
1. INTRODUCTION 1. INTRODUCTION
The IPP protocol is heavily influenced by the printing model introduced The IPP protocol is heavily influenced by the printing model
in the Document Printing Application (DPA) [ISO10175] standard. introduced in the Document Printing Application (DPA) [ISO10175]
Although DPA specifies both end user and administrative features, IPP standard. Although DPA specifies both end user and administrative
version 1.0 (IPP/1.0) focuses only on end user functionality. features, IPP version 1.0 (IPP/1.0) focuses only on end user
functionality.
2. TERMINOLOGY 2. TERMINOLOGY
Internet Printing for the purposes of this document is the application Internet Printing for the purposes of this document is the
of Internet tools, programs, servers and networks to allow end-users to application of Internet tools, programs, servers and networks to
print to a remote printer using, after initial setup or configuration, allow end-users to print to a remote printer using, after initial
the same methods, operations and paradigms as would be used for a setup or configuration, the same methods, operations and paradigms as
locally attached or a local area network attached printer. This could would be used for a locally attached or a local area network attached
include the use of HTTP servers and browsers and other applications for printer. This could include the use of HTTP servers and browsers and
providing static, dynamic and interactive printer locating services, other applications for providing static, dynamic and interactive
user installation, selection, configuration, print job submission, printer locating services, user installation, selection,
printer capability inquiry and status inquiry of remote printers and configuration, print job submission, printer capability inquiry and
jobs. status inquiry of remote printers and jobs.
For the purposes of this document, a WEB Browser is software available For the purposes of this document, a WEB Browser is software
from a number of sources including but not limited to the following: available from a number of sources including but not limited to the
Microsoft Internet Explorer, NCSA Mosaic, Netscape Navigator, Sun Hot following: Microsoft Internet Explorer, NCSA Mosaic, Netscape
Java!. The major task of these products is to use the Hypertext Navigator, Sun Hot Java!. The major task of these products is to use
Transport Protocol (HTTP) to retrieve, interpret and display Hypertext the Hypertext Transport Protocol (HTTP) to retrieve, interpret and
Markup Language (HTML). These products are often a part of a complete display Hypertext Markup Language (HTML). These products are often a
Internet Printing system because they are often used as a means of part of a complete Internet Printing system because they are often
obtaining the status of or more information about the printing system; used as a means of obtaining the status of or more information about
however, they may not be present in all implementations. the printing system; however, they may not be present in all
implementations.
Throughout this document, 'printer' shall be interpreted to include any Throughout this document, 'printer' shall be interpreted to include
device which is capable of marking on a piece of media using any any device which is capable of marking on a piece of media using any
available technology. These design goals do not include support for available technology. These design goals do not include support for
multi-tiered printing solutions involving servers (single or multiple) multi-tiered printing solutions involving servers (single or
logically in front of the actual printing device yet all such multiple) logically in front of the actual printing device yet all
configurations shall be supported but shall appear to the end-user as such configurations shall be supported but shall appear to the end-
only a single device. user as only a single device.
Throughout this document 'driver' refers to the code installed in some Throughout this document 'driver' refers to the code installed in
client operating system to generate the print data stream for the some client operating system to generate the print data stream for
intended printer. Some computing environments may not include a separate the intended printer. Some computing environments may not include a
printer driver. Rather, the generation of the proper print data stream separate printer driver. Rather, the generation of the proper print
is accomplished in an application on that computer. How such a computer data stream is accomplished in an application on that computer. How
environment or application is updated to support a new printer now made such a computer environment or application is updated to support a
available using IPP is outside the scope of IPP. The actual details for new printer now made available using IPP is outside the scope of IPP.
installing a printer driver are operating system dependent and are also The actual details for installing a printer driver are operating
outside the scope of IPP. See also section 4.1 (SECURITY CONSIDERATIONS) system dependent and are also outside the scope of IPP. See also
for security implications of driver download and installation. section 4.1 (SECURITY CONSIDERATIONS) for security implications of
driver download and installation.
The IPP protocol will support the following physical configurations: The IPP protocol will support the following physical configurations:
Expires: May 16, 1999 - An IPP client talking to an IPP Printer object imbedded in a
- An IPP client talking to an IPP Printer object imbedded in a single, single, physical output device.
physical output device. - An IPP Client talking to a server containing one or more IPP
- An IPP Client talking to a server containing one or more IPP Printer Printer objects. Each Printer object is associated with exactly one
objects. Each Printer object is associated with exactly one physical physical output device supported by the server. The protocol
output device supported by the server. The protocol between the between the server and the output devices is undefined.
server and the output devices is undefined. - An IPP Client talking to an IPP Printer object in a server. The
- An IPP Client talking to an IPP Printer object in a server. The Printer object is associated with one or more physical output
Printer object is associated with one or more physical output devices, but the client only sees the Printer object, which is an
devices, but the client only sees the Printer object, which is an abstraction and represents all of the associated physical output
abstraction and represents all of the associated physical output devices. The protocol between the server and the physical output
devices. The protocol between the server and the physical output devices is undefined.
devices is undefined.
Throughout this document, certain design goals will be identified as not Throughout this document, certain design goals will be identified as
being a part of version 1.0 (or V1.0) of the protocol or as being not being a part of version 1.0 (or V1.0) of the protocol or as being
satisfied by means outside of IPP. IPP is assumed to be one part, an satisfied by means outside of IPP. IPP is assumed to be one part, an
enabler, of a complete Internet Printing solution. For example printer enabler, of a complete Internet Printing solution. For example
instance creation is not performed by but is enabled by the protocol. printer instance creation is not performed by but is enabled by the
Globally, none of the operator or administrators wants and needs are protocol. Globally, none of the operator or administrators wants and
included in the design goals for version 1.0. Some of the end-user needs are included in the design goals for version 1.0. Some of the
wants and needs may also be excluded from version 1.0 and will be so end-user wants and needs may also be excluded from version 1.0 and
noted in the description of them. Subsequent versions of the protocol will be so noted in the description of them. Subsequent versions of
(e.g. V2.0) may include support for these initially excluded wants and the protocol (e.g. V2.0) may include support for these initially
needs. excluded wants and needs.
Expires: May 16, 1999
3. DESIGN GOALS 3. DESIGN GOALS
The next three sections identify the design goals for an Internet The next three sections identify the design goals for an Internet
printing protocol from three roles assumed by humans: end-user, printing protocol from three roles assumed by humans: end-user,
operator, and administrator. The goals defined here are only those that operator, and administrator. The goals defined here are only those
need to be addressed by an Internet printing protocol. Other wants and that need to be addressed by an Internet printing protocol. Other
needs, such as that the operator needs physical access to the printer wants and needs, such as that the operator needs physical access to
(e.g. to be able to load paper or clear jams) are not covered by this the printer (e.g. to be able to load paper or clear jams) are not
document. Section 5 contains scenarios which provide more detailed covered by this document. Section 5 contains scenarios which provide
examples of the entire process including discovery, status, printing and more detailed examples of the entire process including discovery,
end-of-job reporting. status, printing and end-of-job reporting.
3.1. END-USER 3.1. END-USER
An end-user of a printer accepting jobs through the Internet is one of An end-user of a printer accepting jobs through the Internet is one
the roles in which humans act. The end-user is the person that will of the roles in which humans act. The end-user is the person that
submit a job to be printed on the printer. will submit a job to be printed on the printer.
The wants and needs of the end-user are broken down into six categories: The wants and needs of the end-user are broken down into six
finding/locating a printer, creating a local instance of a printer, categories: finding/locating a printer, creating a local instance of
viewing printer status, viewing printer capabilities, submitting a print a printer, viewing printer status, viewing printer capabilities,
job, viewing print job status, altering the attributes of a print job. submitting a print job, viewing print job status, altering the
attributes of a print job.
3.1.1. Finding or locating a printer. 3.1.1. Finding or locating a printer.
End-users want to be able to find and locate printers to which they are End-users want to be able to find and locate printers to which they
authorized to print. They want to be able to perform this function are authorized to print. They want to be able to perform this
using a standard WEB browser or other application. Multiple criteria function using a standard WEB browser or other application. Multiple
can be applied to find the printers needed. These criteria include but criteria can be applied to find the printers needed. These criteria
are not limited to: include but are not limited to:
- by name (Printer 1, Joes-color-printer, etc.)
- by geographic location (bldg 1, Kentucky, etc.)
- by capability or attribute (color, duplex, legal paper, etc.)
Additionally, while it is outside of scope of IPP, end-users want to be - by name (Printer 1, Joes-color-printer, etc.)
able to limit the scope of their searching to: - by geographic location (bldg 1, Kentucky, etc.)
- by capability or attribute (color, duplex, legal paper, etc.)
- inside a functional sub-domain Additionally, while it is outside of scope of IPP, end-users want to
- include only a particular domain (lexmark.com) be able to limit the scope of their searching to:
- exclude specified domains
While an Internet printing protocol may not of itself include this - inside a functional sub-domain
function, IPP must define and enable a directory schema which will - include only a particular domain (lexmark.com)
provide the necessary information for a directory service implementation - exclude specified domains
to consistently represent printers by their IPP attributes. While an Internet printing protocol may not of itself include this
function, IPP must define and enable a directory schema which will
provide the necessary information for a directory service
implementation to consistently represent printers by their IPP
attributes.
3.1.2. Create an instance of the printer. 3.1.2. Create an instance of the printer.
Expires: May 16, 1999 After finding the desired printer, an end-user needs to be able to
After finding the desired printer, an end-user needs to be able to create a local instance of that printer within the end-user operating
create a local instance of that printer within the end-user operating system or desktop. This local instance will vary depending upon the
system or desktop. This local instance will vary depending upon the printing paradigm of the operating system. For example, some UNIX
printing paradigm of the operating system. For example, some UNIX users users will only want a queue or a reference to a remote printer
will only want a queue or a reference to a remote printer created on created on their machine while other UNIX users and Windows NT users
their machine while other UNIX users and Windows NT users will want the will want the queue and also the necessary icons and registry entries
queue and also the necessary icons and registry entries to be created to be created and initialized. Where required, drivers may need to
and initialized. Where required, drivers may need to be downloaded from be downloaded from some repository and installed on the computer.
some repository and installed on the computer. All necessary All necessary decompressing, unpacking, and other installation
decompressing, unpacking, and other installation actions should occur actions should occur without end-user interaction or intervention
without end-user interaction or intervention excepting initial approval excepting initial approval by the end-user. Once the local instance
by the end-user. Once the local instance of the printer has been of the printer has been installed, it shall appear to the end-user of
installed, it shall appear to the end-user of the operating system and the operating system and to the applications running there as any
to the applications running there as any other printer (local, local other printer (local, local area network connected, or network
area network connected, or network operating system connected) on the operating system connected) on the end-user desktop or environment.
end-user desktop or environment. IPP's role in this goal is simply to IPP's role in this goal is simply to enable the creation of the
enable the creation of the printer instance providing information such printer instance providing information such as where to locate a
as where to locate a printer driver for this printer, as an attribute of printer driver for this printer, as an attribute of an IPP Printer.
an IPP Printer.
3.1.3. Viewing the status and capabilities of a printer. 3.1.3. Viewing the status and capabilities of a printer.
Before using a selected printer or, in fact at any time, the end-user Before using a selected printer or, in fact at any time, the end-user
needs the ability to verify the characteristics and status of both needs the ability to verify the characteristics and status of both
printers and jobs queued for that printer. When checking the printers and jobs queued for that printer. When checking the
characteristics of a printer, the end-user typically wants to be able to characteristics of a printer, the end-user typically wants to be able
determine the capability of the device, e.g.: to determine the capability of the device, e.g.:
- supported media, commonly paper, by size and type - supported media, commonly paper, by size and type
- paper handling capability, e.g. duplex, collating, finishing - paper handling capability, e.g. duplex, collating, finishing
- color capability - color capability
When checking the status of the printer and its print jobs, the end-user When checking the status of the printer and its print jobs, the end-
typically wants to be able to determine: user typically wants to be able to determine:
- is the printer on-line? - is the printer on-line?
- what are the defaults to be used for printing? - what are the defaults to be used for printing?
- how many jobs are queued for the printer? - how many jobs are queued for the printer?
- how are job priorities assigned? (outside the scope of IPP) - how are job priorities assigned? (outside the scope of IPP)
3.1.4. Submitting a print job. 3.1.4. Submitting a print job.
Once the desired printer has been located and installed, the end-user Once the desired printer has been located and installed, the end-user
wants to print to that printer from normal applications using standard wants to print to that printer from normal applications using
methods. These normal applications include such programs as word standard methods. These normal applications include such programs as
processors, spreadsheets, data-base applications, WEB browsers, word processors, spreadsheets, data-base applications, WEB browsers,
production printing applications, etc. Additionally, the end-user may production printing applications, etc. Additionally, the end-user
want to print a file already existing on the end-user's computer -- may want to print a file already existing on the end-user's computer
"simple push." In addition to printing from an application and simple -- "simple push". In addition to printing from an application and
push, the end-user needs to have the ability to submit a print job by simple push, the end-user needs to have the ability to submit a print
reference. Printing by reference is defined to mean as submitting a job job by reference. Printing by reference is defined to mean as
submitting a job by providing a reference to an existing document.
Expires: May 16, 1999 The reference, a URI, will be resolved before the actual print
by providing a reference to an existing document. The reference, a URI, process occurs. Submitting a job by reference relieves the user from
will be resolved before the actual print process occurs. Submitting a downloading the document from the remote server and then sending it
job by reference relieves the user from downloading the document from via IPP to the printer. This saves both time and network bandwidth.
the remote server and then sending it via IPP to the printer. This
saves both time and network bandwidth.
Some means shall be provided to determine if the format of a job matches Some means shall be provided to determine if the format of a job
the capability of the printer. This can be done by one of the following matches the capability of the printer. This can be done by one of
(all of which are outside of scope of the IPP protocol): the following (all of which are outside of scope of the IPP
protocol):
- the end-user selects the correct printer driver - the end-user selects the correct printer driver
- the printer automatically selects the proper interpreter - the printer automatically selects the proper interpreter
- the end-user uses some other manual procedure. - the end-user uses some other manual procedure.
A standard action shall be defined should the job's requirements not A standard action shall be defined should the job's requirements not
match the capabilities of the printer. match the capabilities of the printer.
Because the end-user does not want to know the details of the underlying Because the end-user does not want to know the details of the
printing process, the protocol must support job-to-printer capability underlying printing process, the protocol must support job-to-printer
matching (all implementations are not necessarily required to implement capability matching (all implementations are not necessarily required
this function.) This matching capability requires knowing both the to implement this function.) This matching capability requires
printer's capabilities and attributes and those capabilities and knowing both the printer's capabilities and attributes and those
attributes required by the job. Actions taken when a print job requires capabilities and attributes required by the job. Actions taken when
capabilities or attributes that are not available on the printer vary a print job requires capabilities or attributes that are not
and can include but are not limited to: available on the printer vary and can include but are not limited to:
- rejecting the print job - rejecting the print job
- redirecting the print job to another printer (Not in V1.0) - redirecting the print job to another printer (Not in V1.0)
- printing the job, accepting differences in the appearance - printing the job, accepting differences in the appearance
Print jobs will also be submitted by background or batch applications Print jobs will also be submitted by background or batch applications
without human intervention. without human intervention.
End-users need the ability to set certain print job parameters at the End-users need the ability to set certain print job parameters at the
time the job is submitted. These parameters include but are not limited time the job is submitted. These parameters include but are not
to: limited to:
- number of copies - number of copies
- single or two sided printing - single or two sided printing
- finishing - finishing
- job priority - job priority
3.1.5. Viewing the status of a submitted print job. 3.1.5. Viewing the status of a submitted print job.
After a job has been submitted to a printer, the end-user needs a way to After a job has been submitted to a printer, the end-user needs a way
view the status of that job (i.e. job waiting, job printing, job done) to view the status of that job (i.e. job waiting, job printing, job
and to determine where the job is in the print queue. done) and to determine where the job is in the print queue.
In addition to the need to inquire about the status of a print job, In addition to the need to inquire about the status of a print job,
automatic notification of the completion of that job is also required. automatic notification of the completion of that job is also
required.
Expires: May 16, 1999 Notification means are not defined by the protocol but the protocol
Notification means are not defined by the protocol but the protocol must must provide a means of enabling and disabling the notification.
provide a means of enabling and disabling the notification.
3.1.6. Canceling a Print Job 3.1.6. Canceling a Print Job
While a job is waiting to be printing or has been started but not yet While a job is waiting to be printed or has been started but not yet
completed, the original creator/submitter of the print job (i.e. the completed, the original creator/submitter of the print job (i.e. the
end-user) shall be able to cancel the job entirely (job is waiting) or end-user) shall be able to cancel the job entirely (job is waiting)
the remaining portion of it (job is printing.) Altering the print job or the remaining portion of it (job is printing.) Altering the print
itself is not a V1.0 design goal. job itself is not a V1.0 design goal.
3.2. OPERATOR (NOT REQUIRED FOR V1.0) 3.2. OPERATOR (NOT REQUIRED FOR V1.0)
An operator of a printer accepting jobs through the Internet is one of An operator of a printer accepting jobs through the Internet is one
the roles in which humans act. The operator has the responsibility of of the roles in which humans act. The operator has the
monitoring the status of the printer as well as managing and controlling responsibility of monitoring the status of the printer as well as
the jobs at the device. These responsibilities include but are not managing and controlling the jobs at the device. These
limited to the replenishing of supplies (ink, toner, paper, etc.), the responsibilities include but are not limited to the replenishing of
clearing of minor errors (paper jams, etc.) and the re-prioritization of supplies (ink, toner, paper, etc.), the clearing of minor errors
end-user jobs. Operator wants and needs will not be addressed by V1.0 (paper jams, etc.) and the re-prioritization of end-user jobs.
of the protocol. Operator wants and needs will not be addressed by V1.0 of the
protocol.
The wants and needs of the operator include all those of the end-user The wants and needs of the operator include all those of the end-user
but may include additional privileges. For example, an operator may be but may include additional privileges. For example, an operator may
able to view all print jobs on a printer while the end-user might only be able to view all print jobs on a printer while the end-user might
be able to see his own jobs. only be able to see his own jobs.
3.2.1. Alerting. 3.2.1. Alerting.
One of the required operator functions is having the ability to discover One of the required operator functions is having the ability to
or to be alerted to changes in the status of a printer particularly discover or to be alerted to changes in the status of a printer
those changes that cause a printer to stop printing and to be able to particularly those changes that cause a printer to stop printing and
correct those problems. As such, an Internet printing protocol shall be to be able to correct those problems. As such, an Internet printing
able to alert a designated operator or operators to these conditions protocol shall be able to alert a designated operator or operators to
such as 'out of paper', 'out of ink', etc. Additionally. the operator these conditions such as 'out of paper', 'out of ink', etc.
shall be able to, asynchronous to other printer activity, inquire as to Additionally. the operator shall be able to, asynchronous to other
a printer's or a job's status. printer activity, inquire as to a printer's or a job's status.
3.2.2. Changing Print and Job Status. 3.2.2. Changing Print and Job Status.
Another of the required operator functions is the ability to affect Another of the required operator functions is the ability to affect
changes to printer and job status remotely. For example, the operator changes to printer and job status remotely. For example, the
will need to be able to re-prioritize or cancel any print jobs on a operator will need to be able to re-prioritize or cancel any print
printer to which the operator has authority. jobs on a printer to which the operator has authority.
Expires: May 16, 1999
3.3. ADMINISTRATOR (NOT REQUIRED FOR V1.0) 3.3. ADMINISTRATOR (NOT REQUIRED FOR V1.0)
An administrator of a printer accepting jobs through the Internet is one An administrator of a printer accepting jobs through the Internet is
of the roles in which humans act. The administrator has the one of the roles in which humans act. The administrator has the
responsibility of creating the printer instances and controlling the responsibility of creating the printer instances and controlling the
authorization of other end-users and operators. Administrator wants and authorization of other end-users and operators. Administrator wants
needs will not be addressed by V1.0 of the protocol. and needs will not be addressed by V1.0 of the protocol.
The wants and needs of the administrator include all those of the end- The wants and needs of the administrator include all those of the
user and, in some environments, some or all of those of the operator. end-user and, in some environments, some or all of those of the
Minimally, the administrator must also have the tools, programs, operator. Minimally, the administrator must also have the tools,
utilities and supporting protocols available to be able to: programs, utilities and supporting protocols available to be able to:
- create an instance of a printer - create an instance of a printer
- create, edit and maintain the list of authorized end-users - create, edit and maintain the list of authorized end-users
- create, edit and maintain the list of authorized operators - create, edit and maintain the list of authorized operators
- create, edit and maintain the list of authorized - create, edit and maintain the list of authorized
administrators administrators
- create, customize, change or otherwise alter the manner in - create, customize, change or otherwise alter the manner in
which the status capabilities and other information about printers which the status capabilities and other information about printers
and jobs are presented and jobs are presented
- create, customize, or change other printer or job features - create, customize, or change other printer or job features
- administrate billing or other charge-back mechanisms - administrate billing or other charge-back mechanisms
- create sets of defaults - create sets of defaults
- create sets of capabilities - create sets of capabilities
The administrator must have the capability to perform all the above The administrator must have the capability to perform all the above
tasks locally or remotely to the printer. tasks locally or remotely to the printer.
Expires: May 16, 1999
4. OBJECTIVES OF THE PROTOCOL 4. OBJECTIVES OF THE PROTOCOL
The protocol to be defined by an Internet printing working group will The protocol to be defined by an Internet printing working group will
address the wants and needs of the end-user (V1.0). It will not, at address the wants and needs of the end-user (V1.0). It will not, at
least initially, address the operator or administrator wants and needs least initially, address the operator or administrator wants and
(V2.0). needs (V2.0).
The protocol defined shall be independent of the operating system of The protocol defined shall be independent of the operating system of
both the client and the server. Generally, any platform capable of both the client and the server. Generally, any platform capable of
supporting a WEB Browser should be capable of being a client. supporting a WEB Browser should be capable of being a client.
Generally, any platform providing a WEB/HTTP server and printing Generally, any platform providing a WEB/HTTP server and printing
services should be capable of being a server. Usage of the WEB Browser services should be capable of being a server. Usage of the WEB
and Server is not required for IPP; the operating system, operating Browser and Server is not required for IPP; the operating system,
system extensions or other applications may provide IPP functionality operating system extensions or other applications may provide IPP
directly. functionality directly.
In many environments such as Windows 95, Windows NT and OS/2, the print In many environments such as Windows 95, Windows NT and OS/2, the
data is created and transmitted to the printer on the fly rather than print data is created and transmitted to the printer on the fly
being created, spooled and then transmitted to the printer (a typical rather than being created, spooled and then transmitted to the
UNIX method.) The Internet Printing Protocol must properly handle printer (a typical UNIX method.) The Internet Printing Protocol must
either methodology and make this transparent to the end-user. properly handle either methodology and make this transparent to the
end-user.
4.1. SECURITY CONSIDERATIONS 4.1. SECURITY CONSIDERATIONS
It is required that the Internet Printing Protocol be able to operate It is required that the Internet Printing Protocol be able to operate
within a secure environment. Wherever reasonable, IPP ought to make use within a secure environment. Wherever reasonable, IPP ought to make
of existing security protocols and services. IPP will not invent new use of existing security protocols and services. IPP will not invent
security features when the design goals described in this document can new security features when the design goals described in this
be met by existing protocols and services. Examples of such services document can be met by existing protocols and services. Examples of
include Secure Socket Layer Version 3 (SSL3) [SSL] and HTTP Digest such services include Secure Socket Layer Version 3 (SSL3) [SSL] and
Access Authentication [RFC2069]. Note: SSL3 is not on the IETF HTTP Digest Access Authentication [RFC2069]. Note: SSL3 is not on
standards track. the IETF standards track.
Since we cannot anticipate the security levels or the specific threats Since we cannot anticipate the security levels or the specific
that any given IPP print administrator may be concerned with, IPP must threats that any given IPP print administrator may be concerned with,
be capable of operating with different security mechanisms and policies IPP must be capable of operating with different security mechanisms
as required by the individual installation. The initial security needs and policies as required by the individual installation. The initial
of IPP are derived from two primary considerations. First, the printing security needs of IPP are derived from two primary considerations.
environments described in this document take into account that the First, the printing environments described in this document take into
client, the Printer, and the document to be printed may each exist in account that the client, the Printer, and the document to be printed
different security domains. When objects are in different security may each exist in different security domains. When objects are in
domains the design goals for authentication and message protection may different security domains the design goals for authentication and
be much stronger than when they are all in the same domain. message protection may be much stronger than when they are all in the
same domain.
Secondly, the sensitivity and value of the content being printed will Secondly, the sensitivity and value of the content being printed will
vary from one instance of a print job to another. For example, a vary from one instance of a print job to another. For example, a
publicly available document does not need the same level of protection publicly available document does not need the same level of
as a payroll document does. Message protection design goals include protection as a payroll document does. Message protection design
data origin authentication, privacy, integrity, and non-repudiation. goals include data origin authentication, privacy, integrity, and
non-repudiation.
Expires: May 16, 1999 In many environments (e.g. Windows, OS/2) a printer driver may be
In many environments (e.g. Windows, OS/2) a printer driver may be needed needed to create the proper datastream for printer. This document
to create the proper datastream for printer. This document discusses discusses downloading such a new driver from a variety of sources.
downloading such a new driver from a variety of sources. Downloading Downloading and installing any software, including drivers) on a
and installing any software, including drivers) on a computer exposes computer exposes that computer to a number of security risks
that computer to a number of security risks including but not limited including but not limited to:
to:
- defective software - defective software
- malicious software (e.g. Trojan horses) - malicious software (e.g. Trojan horses)
- inappropriate software (i.e. software doing something - inappropriate software (i.e. software doing something
deemed unreasonable by the user.) deemed unreasonable by the user.)
As such, proper security considerations and actions need to be taken by As such, proper security considerations and actions need to be taken
the user and/or a system administrator to prevent the compromising of by the user and/or a system administrator to prevent the compromising
the computer. Administrators should configure downloading mechanism for of the computer. Administrators should configure downloading
printer drivers in such a way as to be able to verify the source of mechanism for printer drivers in such a way as to be able to verify
driver software and encrypt or otherwise protect that software during the source of driver software and encrypt or otherwise protect that
download. software during download.
Examples including security considerations can be found in sections 5 Examples including security considerations can be found in sections 5
(IPP SCENARIOS) and 11 (APPENDIX - DETAILED SCENARIOS) later in this (IPP SCENARIOS) and 10 (APPENDIX - DETAILED SCENARIOS) later in this
document. document.
4.2. INTERACTION WITH LPD (RFC1179) 4.2. INTERACTION WITH LPD (RFC1179)
Many versions of UNIX and in fact other operating systems provide a Many versions of UNIX and in fact other operating systems provide a
means of printing as described in [RFC1179] (Line Printer Daemon means of printing as described in [RFC1179] (Line Printer Daemon
Protocol.) This document describes the file formats for the control and Protocol.) This document describes the file formats for the control
data files as well as the messages used by the protocol. Because of the and data files as well as the messages used by the protocol. Because
simplistic approach taken by this protocol, many manufacturers have of the simplistic approach taken by this protocol, many manufacturers
include proprietary enhancements and extensions to 'lpd.' Because of have include proprietary enhancements and extensions to 'lpd.'
this divergence and due to other design goals described in this Because of this divergence and due to other design goals described in
document, there is no requirement for backward compatibility or this document, there is no requirement for backward compatibility or
interoperability with 'lpd'. However, a mapping of LPD functionality interoperability with 'lpd'. However, a mapping of LPD functionality
and IPP functionality shall be provided so as to enable a gateway and IPP functionality shall be provided so as to enable a gateway
between LPD and IPP. between LPD and IPP.
4.3. EXTENSIBILITY 4.3. EXTENSIBILITY
The Internet Printing Protocol shall be extensible by several means that The Internet Printing Protocol shall be extensible by several means
facilitate interoperability and prevent implementation collisions: that facilitate interoperability and prevent implementation
collisions:
- by providing a process whereby implementers can submit proposals - by providing a process whereby implementers can submit proposals
for registration of new attributes and new enumerated values for for registration of new attributes and new enumerated values for
existing attributes. existing attributes.
* that require review and approval. The Internet Assigned * that require review and approval. The Internet Assigned
Number Authority (IANA) will be the repository for such Number Authority (IANA) will be the repository for such
accepted registration proposals after review. accepted registration proposals after review.
Expires: May 16, 1999 * that do not require review and approval. IANA will be the
* that do not require review and approval. IANA will be the repository for such registrations.
repository for such registrations.
- by providing syntax in the protocol so that implementers may add - by providing syntax in the protocol so that implementers may add
private (i.e. unregistered) attributes and enumerated attribute private (i.e. unregistered) attributes and enumerated attribute
values. values.
- by providing versioning and negotiation so as to enable future - by providing versioning and negotiation so as to enable future
implementations of IPP to interoperate with implementations of implementations of IPP to interoperate with implementations of
version 1.0 of IPP. version 1.0 of IPP.
4.4. FIREWALLS 4.4. FIREWALLS
As stated in section 3 Design Goals, Internet printing shall, by As stated in section 3 Design Goals, Internet printing shall, by
definition, support printing from one enterprise to another. As such, definition, support printing from one enterprise to another. As
the Internet printing protocol must be capable of passing through such, the Internet printing protocol must be capable of passing
firewalls and/or proxy servers (where enabled by the firewall through firewalls and/or proxy servers (where enabled by the firewall
administrator) preferably without modification to the existing firewall administrator) preferably without modification to the existing
technology. firewall technology.
4.5. INTERNATIONALIZATION 4.5. INTERNATIONALIZATION
Users of Internet printing will come from all over the world. As such, Users of Internet printing will come from all over the world. As
where appropriate, internationalization and localization will be enabled such, where appropriate, internationalization and localization will
for the protocol. be enabled for the protocol.
Expires: May 16, 1999
5. IPP SCENARIOS 5. IPP SCENARIOS
Each of the scenarios in this section describes a specific IPP Each of the scenarios in this section describes a specific IPP
operation, such as submitting a print job. Section 11 contains several operation, such as submitting a print job. Section 10 contains
detailed flows for each scenario to provide additional detail. The several detailed flows for each scenario to provide additional
examples should not be considered exhaustive, but illustrative of the detail. The examples should not be considered exhaustive, but
functions and features required in the protocol. Flows are intended to illustrative of the functions and features required in the protocol.
be protocol neutral. It is not assumed that all of the functions and Flows are intended to be protocol neutral. It is not assumed that all
features described in these scenarios will necessarily be supported of the functions and features described in these scenarios will
directly by IPP or in version 1.0 of IPP. necessarily be supported directly by IPP or in version 1.0 of IPP.
See the IPP Model and Semantics document for details on configurations See the IPP Model and Semantics document for details on
of clients, servers and firewalls. configurations of clients, servers and firewalls.
Expires: May 16, 1999
5.1. PRINTER DISCOVERY 5.1. PRINTER DISCOVERY
Client Directory Service Client Directory Service
Service Service
+----------------------------------------------------------- >
give me information on printers with these characteristics
< -----------------------------------------------------------+ +----------------------------------------------------------- >
Information on Printers matching these characteristics give me information on printers with these characteristics
The objective of printer discovery is to locate printers that meet the < -----------------------------------------------------------+
client's wants and needs. The Directory Service should provide enough Information on Printers matching these characteristics
information for the client to make an initial choice. The client may
have to connect to each individual Printer offered to get more detail.
Not all information available from the Directory Service is obtained
using IPP; some information may be administratively provided.
The actual protocol used between client and Directory or Name Service is The objective of printer discovery is to locate printers that meet
considered outside the scope of IPP. Printer Discover is included in the the client's wants and needs. The Directory Service should provide
scenarios to provide design goals for the directory schema for IPP enough information for the client to make an initial choice. The
Printers and to further define Printer attributes. client may have to connect to each individual Printer offered to get
more detail. Not all information available from the Directory
Service is obtained using IPP; some information may be
administratively provided.
Characteristics that might be considered when locating a Printer The actual protocol used between client and Directory or Name Service
include: is considered outside the scope of IPP. Printer Discover is included
in the scenarios to provide design goals for the directory schema for
IPP Printers and to further define Printer attributes.
- capabilities of the Printer, e.g. PDLs supported Characteristics that might be considered when locating a Printer
- physical location, e.g. in building 010 include:
- driver required and location
- cost per page to print (outside the scope of IPP)
- whether or not printer is access controlled
- whether or not usage requires client authentication
- whether or not Printer can be authenticated
- whether or not payment is required for printing (outside the scope of
IPP)
- maximum job size (spool size) (outside the scope of IPP)
- whether or not Printer support compression (outside the scope of IPP)
- whether or not Printer supports encryption
- administrative limits on this Printer
- maximum number of copies per job
- maximum number of pages per job
Responses could additionally include: - capabilities of the Printer, e.g. PDLs supported
- physical location, e.g. in building 010
- driver required and location
- cost per page to print (outside the scope of IPP)
- whether or not printer is access controlled
- whether or not usage requires client authentication
- whether or not Printer can be authenticated
- whether or not payment is required for printing (outside the scope
of IPP)
- maximum job size (spool size) (outside the scope of IPP)
- whether or not Printer support compression (outside the scope of
IPP)
- whether or not Printer supports encryption
- administrative limits on this Printer
- maximum number of copies per job
- maximum number of pages per job
- how to get more information Responses could additionally include:
- web page
- telephone number
- help desk
Expires: May 16, 1999 - how to get more information
- web page
- telephone number
- help desk
5.2. DRIVER INSTALLATION 5.2. DRIVER INSTALLATION
Client Printer Client Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Where can I find a driver & software to install it? Where can I find a driver & software to install it?
< -----------------------------------------------------------+ < -----------------------------------------------------------+
URIs for drivers and install software URIs for drivers and install software
Driver here refers to the code installed in some client operating system Driver here refers to the code installed in some client operating
to generate the print data stream for the intended printer. The actual system to generate the print data stream for the intended printer.
details for installing a printer driver are operating system dependent The actual details for installing a printer driver are operating
and are also outside the scope of IPP. However, an IPP printer or a system dependent and are also outside the scope of IPP. However, an
directory service advertising an IPP Printer should be capable of IPP printer or a directory service advertising an IPP Printer should
telling a client what drivers are available and /or required, where they be capable of telling a client what drivers are available and/or
can be found, and provide pointers to installation instructions, required, where they can be found, and provide pointers to
installation code or initialization strings required to install the installation instructions, installation code or initialization
driver. See section 4.1 (SECURITY CONSIDERATIONS) for security strings required to install the driver. See section 4.1 (SECURITY
implications of driver download and installation. CONSIDERATIONS) for security implications of driver download and
installation.
5.3. SUBMITTING A PRINT JOB 5.3. SUBMITTING A PRINT JOB
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- >
Here is a Print Job
- Job attributes
- Print data
< -----------------------------------------------------------+ +----------------------------------------------------------- >
Response Here is a Print Job
- Job attributes
- Print data
The protocol must support these sources of client data: < -----------------------------------------------------------+
Response
- Print data is a file submitted with the job The protocol must support these sources of client data:
- Print data is generated on the fly by an application
- Print data is a file referenced by a URI
The protocol must handle overrun conditions in the printer and must - Print data is a file submitted with the job
support overlapped printing and downloading of the file in devices that - Print data is generated on the fly by an application
are unable to spool files before printing them. - Print data is a file referenced by a URI
The protocol must handle overrun conditions in the printer and must
support overlapped printing and downloading of the file in devices
that are unable to spool files before printing them.
Expires: May 16, 1999 Every print request will have a response. Responses will indicate
Every print request will have a response. Responses will indicate success or failure of the request and provide information on failures
success or failure of the request and provide information on failures when they occur. Responses would include things like:
when they occur. Responses would include things like:
- Got the print job and queued it - Got the print job and queued it
- Got the print job and am printing it - Got the print job and am printing it
- Got the print job, started to print it, but printing failed - Got the print job, started to print it, but printing failed
- why it failed (e.g. unrecoverable PostScript error) - why it failed (e.g. unrecoverable PostScript error)
- state of the printer - state of the printer
- how much printed - how much printed
- Got the print job but couldn't print it - Got the print job but couldn't print it
- why it can't be printed - why it can't be printed
- state of the printer - state of the printer
- Got the print job but don't know what to do with it - Got the print job but don't know what to do with it
- Didn't get a complete print job (e.g. communication failure) - Didn't get a complete print job (e.g. communication failure)
5.4. GETTING STATUS/CAPABILITIES 5.4. GETTING STATUS/CAPABILITIES
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Get status and/or capabilities of Printer Get status and/or capabilities of Printer
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Status/Capabilities Status/Capabilities
Clients will need to get information about Clients will need to get information about
- Static capabilities of the device - Static capabilities of the device
- Dynamic state of the Printer (e.g. out of paper) - Dynamic state of the Printer (e.g. out of paper)
- State of a specific job owned by this client - State of a specific job owned by this client
- State of all jobs owned by this client - State of all jobs owned by this client
- queued - queued
- printing - printing
- completed - completed
- Job submission attributes supported/required
- scheduling attributes (e.g. priority)
- production attributes (e.g. number of copies)
Expires: May 16, 1999 - Job submission attributes supported/required
- scheduling attributes (e.g. priority)
- production attributes (e.g. number of copies)
5.5. ASYNCHRONOUS NOTIFICATION 5.5. ASYNCHRONOUS NOTIFICATION
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Use the following method to notify me of Printer events Use the following method to notify me of Printer events
. .
. .
. .
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Asynchronous notification of Printer event Asynchronous notification of Printer event
Clients must be able to request asynchronous notification for Printer Clients must be able to request asynchronous notification for Printer
events such as events such as
- job completion - job completion
- a fatal error that requires the job to be resubmitted - a fatal error that requires the job to be resubmitted
- a condition that severely impacts a queued job for this client - a condition that severely impacts a queued job for this client
e.g. printer is out of paper e.g. printer is out of paper
Note: end-user notification is a V1.0 design goal while operator Note: end-user notification is a V1.0 design goal while operator
notification is for V2.0. notification is for V2.0.
5.6. JOB CANCELING 5.6. JOB CANCELING
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Cancel the named job as indicated Cancel the named job as indicated
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Response (did it or not) Response (did it or not)
Similarly clients must be able to make changes to jobs which have been Similarly clients must be able to make changes to jobs which have
submitted and are queued for printing. Changing of job attributes been submitted and are queued for printing. Changing of job
should also be supported. Job modifications, holding and releasing of attributes should also be supported. Job modifications, holding and
jobs are not included in the design goals for IPP v1.0. releasing of jobs are not included in the design goals for IPP v1.0.
Expires: May 16, 1999
6. SECURITY CONSIDERATIONS 6. SECURITY CONSIDERATIONS
The security considerations for IPP are described in Section 4.1 above. The security considerations for IPP are described in Section 4.1
above.
Expires: May 16, 1999
7. COPYRIGHT
Copyright(C) The Internet Society 1997. All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it or
assist in its implementation may be prepared, copied, published and
distributed, in whole or in part, without restriction of any kind,
provided that the above copyright notice and this paragraph are included
on all such copies and derivative works. However, this document itself
may not be modified in any way, such as by removing the copyright notice
or references to the Internet Society or other Internet organizations,
except as needed for the purpose of developing Internet standards in
which case the procedures for copyrights defined in the Internet
Standards process must be followed, or as required to translate it into
languages other than English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an "AS
IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK
FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT
INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE."
Expires: May 16, 1999
8. REFERENCES
[IPP-IIG]
Hastings, T., Manros, C., "Internet Printing Protocol/1.0:
Implementer's Guide", draft-ietf-ipp-implementers-guide-00.txt,
November 1998, work in progress.
[IPP-LPD]
Herriot, R., Hastings, T., Jacobs, N., Martin, J.,
"Mapping between LPD and IPP Protocols",
draft-ietf-ipp-lpd-ipp-map-05.txt, November 1998.
[IPP-MOD]
deBry, R., Hastings, T., Herriot, R., Isaacson, S., Powell,
P., "Internet Printing Protocol/1.0: Model and Semantics"
draft-ietf-ipp-mod-11.txt, November, 1998.
[IPP-PRO]
Herriot, R., Butler, S., Moore, P., Tuner, R.,
"Internet Printing Protocol/1.0: Encoding and Transport",
draft-ietf-ipp-pro-07.txt, November, 1998.
[IPP-RAT]
Zilles, S., "Rationale for the Structure and Model and Protocol
for the Internet Printing Protocol",
draft-ietf-ipp-rat-04.txt, November, 1998.
[ISO10175]
ISO/IEC 10175, Document Printing Application, June 1996.
[RFC1179]
McLaughlin, L. III, (editor), "Line Printer Daemon Protocol"
RFC 1179, August 1990.
[SSL]
Netscape, The SSL Protocol, Version 3, (Text version 3.02), November
1996.
Expires: May 16, 1999
9. ACKNOWLEDGMENTS
This document draws heavily from preliminary work done by others
especially in the Printer Working Group (PWG). The author gratefully
acknowledges the specific contributions of:
Scott Isaacson Roger deBry
Novell IBM
sisaacson@novell.com rdebry@us.ibm.com
Carl-Uno Manros Robert Herriot
Xerox Sun
manros@cp10.es.xerox.com Robert.Herriot@eng.sun.com
Tom Hastings Peter Zehler
Xerox Xerox
hastings@cp10.es.xerox.com Peter.Zehler@usa.xerox.com
10. AUTHOR'S ADDRESS
F.D. (Don) Wright
Lexmark International
C14/035-3
740 New Circle Rd
Lexington, KY 40550
Phone: 606-232-4808
Fax: 606-232-6740
E-mail: don@lexmark.com
Expires: May 16, 1999
11. APPENDIX - DETAILED SCENARIOS
The following are more detailed scenarios illustrating how the Internet
Printing Protocol is expected to be used as a part of a complete
Internet Printing system. Some parts of the scenarios include concepts,
functions and information that may be outside of the scope of version
1.0 of IPP (e.g. cost per page, payments means available, etc.) The
information contained herein is meant to be generic. There may not be
an exact wording or terminology match between these scenarios and the
implementation documents.
11.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE
A user wants to find a color Postscript printer in his/her enterprise 7. REFERENCES
which will print transparencies. The client, directory service, and
printer are all behind the same corporate firewall. Because color foils
are expensive, printers of this type are access controlled and require
an account to be established so that printing can be billed back to the
using department. Note the request to find a printer usable by Dept.
J15. Drivers for all supported printers are available from the server
they are associated with. A help desk is provided for end user support.
The printer is unattended.
Client Directory Service [ipp-iig] Hastings, T. and C. Manros, "Internet Printing
Protocol/1.0: Implementer's Guide", Work in Progress.
+---------------------------------------------------------- > [RFC2569] Herriot, R., Hastings, T., Jacobs, N. and J. Martin,
Find a printer with these characteristics "Mapping between LPD and IPP Protocols", RFC 2569, April
- prints color, prints transparencies 1999.
- prints Postscript
- is in building 003
- accessible by the client
< ----------------------------------------------------------+ [RFC2566] deBry, R., Hastings, T., Herriot, R., Isaacson, S. and P.
Printer "Color-A" Powell, "Internet Printing Protocol/1.0: Model and
- prints color, prints transparencies Semantics", RFC 2568, April 1999.
- prints Postscript
- in room H-6, building 003
- driver ABC-Postscript-V1.3 required, here is URI
- cost is $.45 per page for color transparencies
- limit is 10 pages per job
- authentication required to use printer
- printer is unattended
- help desk at x5001
Printer "Color-B" [RFC2565] Herriot, R., Butler, S., Moore, P. and R. Tuner, "Internet
- prints color, prints transparencies Printing Protocol/1.0: Encoding and Transport", RFC 2565,
- prints Postscript April 1999.
- in room J-10, building 003
Expires: May 16, 1999 [RFC2568] Zilles, S., "Rationale for the Structure and Model and
- driver XYZ-Postscript-V2.4 required, here is URI Protocol for the Internet Printing Protocol", RFC 2568,
- cost is $1.25 page for color transparencies April 1999.
- limit is 5 pages per job
- authentication is required to use printer
- printer is unattended
- help desk at x5001
Expires: May 16, 1999 [ISO10175] ISO/IEC 10175, Document Printing Application, June 1996.
11.2. PRINTER DISCOVERY ACROSS ENTERPRISES [RFC1179] McLaughlin, L., "Line Printer Daemon Protocol" RFC 1179,
August 1990.
A user in Company A wants to find a public printer in a business [SSL] Netscape, The SSL Protocol, Version 3, (Text version
partner's enterprise (Company B) on which to print a purchase order. The 3.02), November 1996.
client is behind one corporate firewall and the directory service and
the printer are behind a different corporate firewall. Drivers for all
supported printers are available from the server they are associated
with. A web page is provided for end user support for public printers.
Client Company B Directory Service 8. ACKNOWLEDGMENTS
+---------------------------------------------------------- > This document draws heavily from preliminary work done by others
Find a printer with these characteristics especially in the Printer Working Group (PWG). The author gratefully
- prints black and white acknowledges the specific contributions of:
- is in El Segundo, building A
- is a public printer
< ----------------------------------------------------------+ Scott Isaacson Roger deBry
Printer "Public-A" Novell Utah Valley State College
- prints black and white sisaacson@novell.com debryro@uvsc.edu
- prints Postscript
- in El Segundo, room H-6, building A
- driver ABC-Postscript-V1.3 required, here is URI
- printer is public
- help available at http://xerox/elSegundo/publicPrinters
Printer "Public-B" Carl-Uno Manros Robert Herriot
- prints black and white Xerox Sun
- prints PCL/5e manros@cp10.es.xerox.com Robert.Herrior@pahv.xerox.xom
- is in El Segundo, room J-10, building A
- driver XYZ-PCL-V2.4 required, here is URI
- printer is public
- help available at http://xerox/elSegundo/publicPrinters
Expires: May 16, 1999 Tom Hastings Peter Zehler
Xerox Xerox
hastings@cp10.es.xerox.com Peter.Zehler@usa.xerox.com
11.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS 9. AUTHOR'S ADDRESS
A student wants to print a paper on a printer at his neighborhood Ink- F.D. (Don) Wright
o's print shop. The report was written using Microsoft Word. The student Lexmark International
is interested in the cost of printing since his budget is limited. Note C14/035-3
the use of logical operators to find this information. 740 New Circle Rd
Lexington, KY 40550
Client Ink-o's Directory Service Phone: 606-232-4808
Fax: 606-232-6740
EMail: don@lexmark.com
+---------------------------------------------------------- > 10. APPENDIX - DETAILED SCENARIOS
Find a Printer with these characteristics
- prints color or black and white
- costs less than $.50 per page
- tell me about resolution and marking technology
< ----------------------------------------------------------+ The following are more detailed scenarios illustrating how the
Printer "Color-A" Internet Printing Protocol is expected to be used as a part of a
- prints color complete Internet Printing system. Some parts of the scenarios
- 600 dpi laser printer include concepts, functions and information that may be outside of
- prints Postscript the scope of version 1.0 of IPP (e.g. cost per page, payments means
- driver ABC-Postscript-V1.3 required, here is URI available, etc.) The information contained herein is meant to be
- cost is $.50 per page for color generic. There may not be an exact wording or terminology match
- payment required prior to submitting print job between these scenarios and the implementation documents.
- here is URI for more information on Ink-o's
Printer "Mono-B" 10.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE
- prints black and white
- 300 dpi inkjet printer
- prints Postscript
- driver XYZ-Postscript-V2.4 required, here is URI
- cost is $0.35 page for black and white
- payment required prior to submitting print job
- here is URI for more information on Ink-o's
Expires: May 16, 1999 A user wants to find a color Postscript printer in his/her enterprise
which will print transparencies. The client, directory service, and
printer are all behind the same corporate firewall. Because color
foils are expensive, printers of this type are access controlled and
require an account to be established so that printing can be billed
back to the using department. Note the request to find a printer
usable by Dept. J15. Drivers for all supported printers are
available from the server they are associated with. A help desk is
provided for end user support. The printer is unattended.
11.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION Client Directory Service
An executive in her hotel room is finishing an important presentation on +---------------------------------------------------------- >
her laptop computer. She connects to a local print shop through the web Find a printer with these characteristics
to get a copy of her charts printed for tomorrow's presentation. She - prints color, prints transparencies
must find a print shop that is convenient to her hotel and can print - prints Postscript
color transparencies. She wants to be sure that the printer can be - is in building 003
authenticated and can accept encrypted data. - accessible by the client
Client SirZippy Directory Service < ----------------------------------------------------------+
Printer "Color-A"
- prints color, prints transparencies
- prints Postscript
- in room H-6, building 003
- driver ABC-Postscript-V1.3 required, here is URI
- cost is $.45 per page for color transparencies
- limit is 10 pages per job
- authentication required to use printer
- printer is unattended
- help desk at x5001
+---------------------------------------------------------- > Printer "Color-B"
Find a Printer with these characteristics - prints color, prints transparencies
- prints color transparencies - prints Postscript
- is in Boulder, Colorado - in room J-10, building 003
- Printer can be authenticated - driver XYZ-Postscript-V2.4 required, here is URI
- Printer supports encryption - cost is $1.25 page for color transparencies
- limit is 5 pages per job
- authentication is required to use printer
- printer is unattended
- help desk at x5001
Tell me when you are open for business 10.2. PRINTER DISCOVERY ACROSS ENTERPRISES
< ----------------------------------------------------------+ A user in Company A wants to find a public printer in a business
Printer "Color-A" partner's enterprise (Company B) on which to print a purchase order.
- prints color transparencies The client is behind one corporate firewall and the directory service
- prints Postscript and the printer are behind a different corporate firewall. Drivers
- driver ABC-Postscript-V1.3 required, here is URI for all supported printers are available from the server they are
- payment required prior to submitting print job associated with. A web page is provided for end user support for
- Printer can be authenticated public printers.
- Data can be encrypted
- Located at 1670 Pearl Street, Boulder, CO
- This Branch is open 24 hours a day
Printer "Color-B" Client Company B Directory Service
- prints color transparencies
- prints Postscript
- driver ABC-Postscript-V1.3 required, here is URI
- payment required prior to submitting print job
- Printer can be authenticated
- Data can be encrypted
- Located at 1220 Arapahoe, Boulder, CO
- This Branch is open from 9:00 am to 6:30 pm
Expires: May 16, 1999 +---------------------------------------------------------- >
Find a printer with these characteristics
- prints black and white
- is in El Segundo, building A
- is a public printer
11.5. DRIVER DOWNLOAD < ----------------------------------------------------------+
Printer "Public-A"
- prints black and white
- prints Postscript
- in El Segundo, room H-6, building A
- driver ABC-Postscript-V1.3 required, here is URI
- printer is public
- help available at http://xerox/elSegundo/publicPrinters
An end user in an enterprise wants to print a lengthy report on a newly Printer "Public-B"
installed high speed PostScript printer. Since she will likely use this - prints black and white
printer often, she would like to download a driver and install it on her - prints PCL/5e
workstation. She is running Windows 95. Note: Driver download is not a - is in El Segundo, room J-10, building A
V1.0 design goal. - driver XYZ-PCL-V2.4 required, here is URI
- printer is public
- help available at http://xerox/elSegundo/publicPrinters
Client IPP Printer 10.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS
+---------------------------------------------------------- > A student wants to print a paper on a printer at his neighborhood
Tell me where to find print drivers for you Ink-o's print shop. The report was written using Microsoft Word. The
student is interested in the cost of printing since his budget is
limited. Note the use of logical operators to find this information.
< ----------------------------------------------------------+ Client Ink-o's Directory Service
Driver install file is at
http://www.ibm.com/drivers/NP12a/Win95
Expires: May 16, 1999 +---------------------------------------------------------- >
Find a Printer with these characteristics
- prints color or black and white
- costs less than $.50 per page
- tell me about resolution and marking technology
11.6. SUBMITTING A PRINT JOB AS A FILE < ----------------------------------------------------------+
Printer "Color-A"
- prints color
- 600 dpi laser printer
- prints Postscript
- driver ABC-Postscript-V1.3 required, here is URI
- cost is $.50 per page for color
- payment required prior to submitting print job
- here is URI for more information on Ink-o's
An end-user wants to submit a print job. The print file already exists Printer "Mono-B"
on his workstation. The client and printer are behind the same corporate - prints black and white
firewall. The printer is available to anyone behind the firewall and no - 300 dpi inkjet printer
authorization or authentication is required. The data is pushed to the - prints Postscript
printer. The printer is capable of spooling the output. No errors occur. - driver XYZ-Postscript-V2.4 required, here is URI
- cost is $0.35 page for black and white
- payment required prior to submitting print job
- here is URI for more information on Ink-o's
Client IPP Printer 10.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION
+---------------------------------------------------------- > An executive in her hotel room is finishing an important presentation
Here is a print job on her laptop computer. She connects to a local print shop through
- job name = MyJob the web to get a copy of her charts printed for tomorrow's
- notify me by email when done printing presentation. She must find a print shop that is convenient to her
- print on iso-a4-white paper hotel and can print color transparencies. She wants to be sure that
- print on both sides of the paper the printer can be authenticated and can accept encrypted data.
- return status of the printer in response
- document is in Postscript format
- here is the document to print
< ----------------------------------------------------------+ Client SirZippy Directory Service
Print job accepted and spooled
- job id = #12345
- current state of print job = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
Expires: May 16, 1999 +---------------------------------------------------------- >
Find a Printer with these characteristics
- prints color transparencies
- is in Boulder, Colorado
- Printer can be authenticated
- Printer supports encryption
Tell me when you are open for business
11.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS < ----------------------------------------------------------+
Printer "Color-A"
- prints color transparencies
- prints Postscript
- driver ABC-Postscript-V1.3 required, here is URI
- payment required prior to submitting print job
- Printer can be authenticated
- Data can be encrypted
- Located at 1670 Pearl Street, Boulder, CO
- This Branch is open 24 hours a day
An end-user wants to submit a print job. The print file already exists Printer "Color-B"
on his workstation. The client and printer are behind the same corporate - prints color transparencies
firewall. The printer is available to anyone behind the firewall and no - prints Postscript
authorization or authentication is required. The data is pushed to the - driver ABC-Postscript-V1.3 required, here is URI
printer. The job consists of two separate documents. The printer is - payment required prior to submitting print job
capable of spooling the output. No errors occur. - Printer can be authenticated
- Data can be encrypted
- Located at 1220 Arapahoe, Boulder, CO
- This Branch is open from 9:00 am to 6:30 pm
Client IPP Printer 10.5. DRIVER DOWNLOAD
+---------------------------------------------------------- > An end user in an enterprise wants to print a lengthy report on a
Here is a print job newly installed high speed PostScript printer. Since she will likely
- job name = MyJob use this printer often, she would like to download a driver and
- notify me by email when done printing install it on her workstation. She is running Windows 95. Note:
- print on iso-a4-white paper Driver download is not a V1.0 design goal.
- print on both sides of the paper
- return status of the printer in response
< ----------------------------------------------------------+ Client IPP Printer
Print job accepted and spooled
- job id = #12345
- submission time = 02/12/97, 15:35
+---------------------------------------------------------- >
- here is the document to print
< ----------------------------------------------------------+ +---------------------------------------------------------- >
- OK Tell me where to find print drivers for you
+---------------------------------------------------------- > < ----------------------------------------------------------+
- here is the document to print, it is the last document. Driver install file is at
http://www.ibm.com/drivers/NP12a/Win95
< ----------------------------------------------------------+ 10.6. SUBMITTING A PRINT JOB AS A FILE
- OK
Expires: May 16, 1999 An end-user wants to submit a print job. The print file already
exists on his workstation. The client and printer are behind the same
corporate firewall. The printer is available to anyone behind the
firewall and no authorization or authentication is required. The data
is pushed to the printer. The printer is capable of spooling the
output. No errors occur.
11.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS Client IPP Printer
An end-user wants to submit a print job. The print file already exists +---------------------------------------------------------- >
on his workstation. The client and printer are behind the same corporate Here is a print job
firewall. The printer is available to anyone behind the firewall and no - job name = MyJob
authorization or authentication is required. The data is pushed to the - notify me by email when done printing
printer. The printer is not capable of spooling the output so it begins - print on iso-a4-white paper
printing while still receiving the file. An error occurs and the printer - print on both sides of the paper
cannot complete printing (in this case the user requires A4 paper and - return status of the printer in response
that paper size is not available on the printer.) - document is in Postscript format
- here is the document to print
Client IPP Printer < ----------------------------------------------------------+
Print job accepted and spooled
- job id = #12345
- current state of print job = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
+---------------------------------------------------------- > 10.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS
Here is a print job
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the document to print
< ----------------------------------------------------------+ An end-user wants to submit a print job. The print file already
Print job accepted exists on his workstation. The client and printer are behind the same
corporate firewall. The printer is available to anyone behind the
firewall and no authorization or authentication is required. The data
is pushed to the printer. The job consists of two separate documents.
The printer is capable of spooling the output. No errors occur.
- printing failed Client IPP Printer
- current state of print job = canceled (A4 not available)
- submission time = 02/12/97, 15:35
- printer state = ready
11.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND PAYMENT +---------------------------------------------------------- >
Here is a print job
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
A traveling executive needs to print a set of transparencies for an < ----------------------------------------------------------+
important business meeting. The charts are in Lotus Freelance format on Print job accepted and spooled
his notebook computer. He has located a SirZippy print shop near his - job id = #12345
hotel that will print color transparencies. Because the information on - submission time = 02/12/97, 15:35
the charts is sensitive, he wants to be sure that his data is sent to +---------------------------------------------------------- >
the Printer in an encrypted format. He also wants to authenticate the - here is the document to print
Printer. The Printer also authenticates the user. Payment occurs across
the Internet.
Client IPP Printer < ----------------------------------------------------------+
- OK
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ - here is the document to print, it is the last document.
Mutual authentication and exchange of secret keys < ----------------------------------------------------------+
- OK
Expires: May 16, 1999 10.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS
+---------------------------------------------------------- > An end-user wants to submit a print job. The print file already
Here is a print job (encrypted) exists on his workstation. The client and printer are behind the same
- job name = MyJob corporate firewall. The printer is available to anyone behind the
- notify me by email when done printing firewall and no authorization or authentication is required. The data
- print on iso-a4-white paper is pushed to the printer. The printer is not capable of spooling the
- print on both sides of the paper output so it begins printing while still receiving the file. An error
- return status of the printer in response occurs and the printer cannot complete printing (in this case the
- tell me where to pick up output user requires A4 paper and that paper size is not available on the
- document is in Postscript format printer.)
- here is the document to print
< ----------------------------------------------------------+ Client IPP Printer
Print job accepted and spooled (encrypted)
- job id = #12345
- current state of print job = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
- payment required to proceed with job
- pick up at 230 East Main after 3:30 pm today
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ Here is a print job
Payment transaction - job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the document to print
Expires: May 16, 1999 < ----------------------------------------------------------+
Print job accepted
11.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR - printing failed
- current state of print job = canceled (A4 not available)
- submission time = 02/12/97, 15:35
- printer state = ready
A traveling executive needs to print a set of transparencies for an 10.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND PAYMENT
important business meeting. The charts are in Lotus Freelance format on
his notebook computer. He has located a SirZippy print shop near his
hotel that will print color transparencies. Because the information on
the charts is sensitive, he wants to be sure that his data is sent to
the printer in an encrypted format. He also wants to authenticate the
printer. The printer also authenticates the user. Payment occurs across
the Internet. An error occurs during decryption.
Client IPP Printer A traveling executive needs to print a set of transparencies for an
important business meeting. The charts are in Lotus Freelance format
on his notebook computer. He has located a SirZippy print shop near
his hotel that will print color transparencies. Because the
information on the charts is sensitive, he wants to be sure that his
data is sent to the Printer in an encrypted format. He also wants to
authenticate the Printer. The Printer also authenticates the user.
Payment occurs across the Internet.
+---------------------------------------------------------- > Client IPP Printer
< ----------------------------------------------------------+
Mutual authentication and exchange of secret keys
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job (encrypted) < ----------------------------------------------------------+
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- tell me where to pick up output
- document is in Postscript format
- here is the document to print
< ----------------------------------------------------------+ Mutual authentication and exchange of secret keys
Print job accepted and spooled (encrypted)
- job id = #12345
- current state of print job = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
- payment required to proceed with job
- pick up at 230 East Main after 3:30 pm today
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ Here is a print job (encrypted)
Payment transaction - job name = MyJob
. - notify me by email when done printing
. - print on iso-a4-white paper
. - print on both sides of the paper
< ----------------------------------------------------------+ - return status of the printer in response
Asynchronous response (email in this case) - tell me where to pick up output
- decryption failed on job #12345 - document is in Postscript format
- no pages printed - here is the document to print
- current state of job = aborted
Expires: May 16, 1999 < ----------------------------------------------------------+
Print job accepted and spooled (encrypted)
- job id = #12345
- current state of print job = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
- payment required to proceed with job
- pick up at 230 East Main after 3:30 pm today
11.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION +---------------------------------------------------------- >
< ----------------------------------------------------------+
Payment transaction
An end-user wants to submit a print job. The print file already exists 10.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR
on his workstation. The client and printer are behind the same corporate
firewall. The printer is available to anyone behind the firewall but
authentication and authorization is required. Authorization takes place
using the authenticated end-user's name. The data is pushed to the
printer. The printer is capable of spooling the output.
Client IPP Printer A traveling executive needs to print a set of transparencies for an
important business meeting. The charts are in Lotus Freelance format
on his notebook computer. He has located a SirZippy print shop near
his hotel that will print color transparencies. Because the
information on the charts is sensitive, he wants to be sure that his
data is sent to the printer in an encrypted format. He also wants to
authenticate the printer. The printer also authenticates the user.
Payment occurs across the Internet. An error occurs during
decryption.
+---------------------------------------------------------- > Client IPP Printer
< ----------------------------------------------------------+
Authentication
Note: An authentication failure would end the transaction at +---------------------------------------------------------- >
this point. < ----------------------------------------------------------+
Mutual authentication and exchange of secret keys
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job (encrypted)
- job name = MyJob - job name = MyJob
- notify me by email when done printing - notify me by email when done printing
- print on iso-a4-white paper - print on iso-a4-white paper
- print on both sides of the paper - print on both sides of the paper
- return status of the printer in response - return status of the printer in response
- tell me where to pick up output - tell me where to pick up output
- document is in Postscript format - document is in Postscript format
- here is the document to print - here is the document to print
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job accepted and spooled Print job accepted and spooled (encrypted)
- job id = #12345 - job id = #12345
- current state of print job = spooled - current state of print job = spooled
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = printing - printer state = printing
- payment required to proceed with job
- pick up at 230 East Main after 3:30 pm today
Expires: May 16, 1999 +---------------------------------------------------------- >
< ----------------------------------------------------------+
Payment transaction
.
.
.
< ----------------------------------------------------------+
Asynchronous response (email in this case)
- decryption failed on job #12345
- no pages printed
- current state of job = aborted
11.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY 10.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION
An end-user wants to submit a print job. The print data is generated An end-user wants to submit a print job. The print file already
dynamically and is being transmitted by a printer driver on the client exists on his workstation. The client and printer are behind the same
workstation as available. The client and printer are behind the same corporate firewall. The printer is available to anyone behind the
corporate firewall. The printer is available to anyone behind the firewall but authentication and authorization is required.
firewall and no authentication and authorization is required. The data Authorization takes place using the authenticated end-user's name.
is pushed to the printer. The printer is capable of spooling the output. The data is pushed to the printer. The printer is capable of spooling
No error occurs. the output.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job < ----------------------------------------------------------+
- job name = MyJob Authentication
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the print job
< ----------------------------------------------------------+ Note: An authentication failure would end the transaction at
Print data accepted and spooling started this point.
- job id = #12345
- current job state = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
Expires: May 16, 1999 +---------------------------------------------------------- >
Here is a print job
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- tell me where to pick up output
- document is in Postscript format
- here is the document to print
11.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED < ----------------------------------------------------------+
Print job accepted and spooled
- job id = #12345
- current state of print job = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
An end-user wants to submit a print job. The print data is generated 10.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY
dynamically and is being transmitted by a printer driver on the client
workstation as available. The client and printer are behind the same
corporate firewall. The printer is available to anyone behind the
firewall and no authentication and authorization is required. The data
is pushed to the printer. The printer is not capable of spooling the
output. The printer jams notifies the user and the user chooses to
cancel the job.
Client IPP Printer An end-user wants to submit a print job. The print data is generated
+---------------------------------------------------------- > dynamically and is being transmitted by a printer driver on the
Here is a print job client workstation as available. The client and printer are behind
- job name = MyJob the same corporate firewall. The printer is available to anyone
- notify me by email when done printing behind the firewall and no authentication and authorization is
- print on iso-a4-white paper required. The data is pushed to the printer. The printer is capable
- print on both sides of the paper of spooling the output. No error occurs.
- return status of the printer in response
- document is in Postscript format
- here is the document to print
< ----------------------------------------------------------+ Client IPP Printer
Print data accepted and printing started
- job id = #12345
+---------------------------------------------------------- > +---------------------------------------------------------- >
- What is the status of print job #12345? Here is a print job
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the print job
< --------------------------------------------------------- + < ----------------------------------------------------------+
- Job #12345 accepted but printer jammed, cannot continue Print data accepted and spooling started
- job id = #12345
- current job state = spooled
- submission time = 02/12/97, 15:35
- printer state = printing
+---------------------------------------------------------- > 10.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED
- Cancel job #12345
* Printer flushes remaining data An end-user wants to submit a print job. The print data is generated
< ----------------------------------------------------------+ dynamically and is being transmitted by a printer driver on the
Print job terminated client workstation as available. The client and printer are behind
- current job state = canceled the same corporate firewall. The printer is available to anyone
- submission time = 02/12/97, 15:35 behind the firewall and no authentication and authorization is
- printer state = jammed required. The data is pushed to the printer. The printer is not
capable of spooling the output. The printer jams notifies the user
and the user chooses to cancel the job.
Expires: May 16, 1999 Client IPP Printer
+---------------------------------------------------------- >
Here is a print job
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the document to print
11.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED < ----------------------------------------------------------+
Print data accepted and printing started
- job id = #12345
An end-user wants to submit a print job. The print data is generated +---------------------------------------------------------- >
dynamically and is being transmitted by a printer driver on the client - What is the status of print job #12345?
workstation as available. The client and printer are behind the same
corporate firewall. The printer is available to anyone behind the
firewall and no authentication and authorization is required. The data
is pushed to the printer. The printer is not capable of spooling the
output. The printer jams, notifies the user and the user clears the jam
and elects to continue.
Client IPP Printer < --------------------------------------------------------- +
- Job #12345 accepted but printer jammed, cannot continue
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job - Cancel job #12345
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the document to print
< ----------------------------------------------------------+ * Printer flushes remaining data
Print data accepted and printing started < ----------------------------------------------------------+
- job id = #12345 Print job terminated
- current job state = canceled
- submission time = 02/12/97, 15:35
- printer state = jammed
< --------------------------------------------------------- + 10.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED
- Notification: printer jammed, cannot continue
* Jam is clear by human intervention, printing continues An end-user wants to submit a print job. The print data is generated
dynamically and is being transmitted by a printer driver on the
client workstation as available. The client and printer are behind
the same corporate firewall. The printer is available to anyone
behind the firewall and no authentication and authorization is
required. The data is pushed to the printer. The printer is not
capable of spooling the output. The printer jams, notifies the user
and the user clears the jam and elects to continue.
+---------------------------------------------------------- > Client IPP Printer
Here is the last part of the document to print
< ----------------------------------------------------------+ +---------------------------------------------------------- >
Print job received Here is a print job
- current job state = printing - job name = MyJob
- submission time = 02/12/97, 15:35 - notify me by email when done printing
- printer state = printing - print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- document is in Postscript format
- here is the document to print
Expires: May 16, 1999 < ----------------------------------------------------------+
Print data accepted and printing started
- job id = #12345
11.15. SUBMITTING A PRINT JOB WITH SERVER PULL < --------------------------------------------------------- +
- Notification: printer jammed, cannot continue
An end-user wants to submit a print job. The print data is in a file and * Jam is clear by human intervention, printing continues
is publicly available. It is pulled by the printer. The client and
printer are behind the same corporate firewall. The printer is available
to anyone behind the firewall and no authentication and authorization is
required. The printer is capable of spooling the output. Printing may
start before the entire job has been pulled.
Client IPP Printer +---------------------------------------------------------- >
Here is the last part of the document to print
+---------------------------------------------------------- > < ----------------------------------------------------------+
Here is a print job Print job received
- job name = MyJob - current job state = printing
- notify me by email when done printing - submission time = 02/12/97, 15:35
- print on iso-a4-white paper - printer state = printing
- print on both sides of the paper
- return status of the printer in response
- here is a reference to the data to be printed
< ----------------------------------------------------------+ 10.15. SUBMITTING A PRINT JOB WITH SERVER PULL
Print data accepted and printing started
- job id = #12345
- current state of job = spooled
- submission time = 02/12/97, 13:15
- printer state = printing
. An end-user wants to submit a print job. The print data is in a file
. and is publicly available. It is pulled by the printer. The client
< ----------------------------------------------------------+ and printer are behind the same corporate firewall. The printer is
Get the file to be printed available to anyone behind the firewall and no authentication and
authorization is required. The printer is capable of spooling the
output. Printing may start before the entire job has been pulled.
+---------------------------------------------------------- > Client IPP Printer
Here it is
Note: Failure to find the file, would end the transaction +---------------------------------------------------------- >
with an error at this point and an asynchronous Here is a print job
notification would be send to the Client.
< ----------------------------------------------------------+ - job name = MyJob
Data received - notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
- here is a reference to the data to be printed
Expires: May 16, 1999 < ----------------------------------------------------------+
Print data accepted and printing started
- job id = #12345
- current state of job = spooled
- submission time = 02/12/97, 13:15
- printer state = printing
11.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES .
.
< ----------------------------------------------------------+
Get the file to be printed
An end-user wants to submit a print job. Part of the print data is on a +---------------------------------------------------------- >
file on the user's workstation. It is pushed by the client, but the Here it is
print job requires some resource not included in the print file. The
client and printer are behind the same corporate firewall. The printer
is available to anyone behind the firewall and no authentication and
authorization is required. The printer is capable of spooling the
output. No errors occur.
Client IPP Printer Note: Failure to find the file, would end the transaction
with an error at this point and an asynchronous
notification would be send to the Client.
+---------------------------------------------------------- > < ----------------------------------------------------------+
Here is a print job Data received
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
< ----------------------------------------------------------+ 10.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES
Print job accepted and spooled
- job id = #12345
- submission time = 02/12/97, 15:35
+---------------------------------------------------------- > An end-user wants to submit a print job. Part of the print data is
- here is the document to print on a file on the user's workstation. It is pushed by the client, but
the print job requires some resource not included in the print file.
The client and printer are behind the same corporate firewall. The
printer is available to anyone behind the firewall and no
authentication and authorization is required. The printer is capable
of spooling the output. No errors occur.
< ----------------------------------------------------------+ Client IPP Printer
- OK
+---------------------------------------------------------- > +---------------------------------------------------------- >
- here is the URI to print, it is the last document. Here is a print job
- job name = MyJob
- notify me by email when done printing
- print on iso-a4-white paper
- print on both sides of the paper
- return status of the printer in response
< ----------------------------------------------------------+ < ----------------------------------------------------------+
- OK Print job accepted and spooled
- job id = #12345
- submission time = 02/12/97, 15:35
< ----------------------------------------------------------+ +---------------------------------------------------------- >
Get the external resource - here is the document to print
+---------------------------------------------------------- > < ----------------------------------------------------------+
Here it is - OK
Expires: May 16, 1999 +---------------------------------------------------------- >
- here is the URI to print, it is the last document.
11.17. GETTING CAPABILITIES < ----------------------------------------------------------+
11.17.1. Submission Attributes - OK
An end-user wants to get the production and scheduling attributes that < ----------------------------------------------------------+
are supported or required when submitting jobs to this printer. The Get the external resource
client will use these attributes when forming the subsequent print
request.
Client IPP Printer +---------------------------------------------------------- >
+---------------------------------------------------------- > Here it is
I'm going to submit a Postscript job
give me your job submission attributes
< ----------------------------------------------------------+ 10.17. GETTING CAPABILITIES
Postscript production attributes for this Printer are:
- medium-select = us-letter-white, us-legal-white
- default is us-letter-white
- copies = 1,2,3,4,5
- default is 1
- print-quality = draft, normal, high
- default is draft
- sides = 1-sided, 2-sided-long-edge
- default is 2-sided-long-edge
- Job scheduling attributes for this Printer are:
- job-priority = 1,2,3
- default = 3
11.17.2. Printer Capabilities 10.17.1. Submission Attributes
An end-user wants to determine the resolution, marking technology, and An end-user wants to get the production and scheduling attributes
PDLs supported by the printer. that are supported or required when submitting jobs to this printer.
The client will use these attributes when forming the subsequent
print request.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Please tell me the I'm going to submit a Postscript job
- resolution of the printer give me your job submission attributes
- the marking technology of the printer
- PDLs supported
< ----------------------------------------------------------+
Printer resolution = 600 dpi
Marking Technology = laser
PDLs supported = Postscript level 2, PCL/6
Expires: May 16, 1999 < ----------------------------------------------------------+
Postscript production attributes for this Printer are:
- medium-select = us-letter-white, us-legal-white
- default is us-letter-white
- copies = 1,2,3,4,5
- default is 1
- print-quality = draft, normal, high
- default is draft
- sides = 1-sided, 2-sided-long-edge
- default is 2-sided-long-edge
- Job scheduling attributes for this Printer are:
- job-priority = 1,2,3
- default = 3
11.18. GETTING STATUS 10.17.2. Printer Capabilities
11.18.1. Printer State/Status
An end-user wants to determine the state or status of the printer. An end-user wants to determine the resolution, marking technology,
and PDLs supported by the printer.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- >
Please tell me the
- resolution of the printer
- the marking technology of the printer
- PDLs supported
< ----------------------------------------------------------+
Printer resolution = 600 dpi
Marking Technology = laser
PDLs supported = Postscript level 2, PCL/6
+---------------------------------------------------------- > 10.18. GETTING STATUS
What is the state of the printer?
< ----------------------------------------------------------+ 10.18.1. Printer State/Status
Printer state = out-of-paper
11.18.2. Job Status An end-user wants to determine the state or status of the printer.
An end user wants to get the status of a job he has submitted. Client IPP Printer
Client IPP Printer +---------------------------------------------------------- >
What is the state of the printer?
+---------------------------------------------------------- > < ----------------------------------------------------------+
Please tell me the status of job #12345 Printer state = out-of-paper
< ----------------------------------------------------------+ 10.18.2. Job Status
Job #12345 is queued
it is number 3 in the queue
printer state = printing
11.18.3. Status of All My Jobs An end user wants to get the status of a job he has submitted.
An end user wants to get a list of all of the jobs he has submitted to Client IPP Printer
this Printer.
Client IPP Printer +---------------------------------------------------------- >
Please tell me the status of job #12345
+---------------------------------------------------------- > < ----------------------------------------------------------+
Please tell me the status of my jobs Job #12345 is queued
it is number 3 in the queue
printer state = printing
< ----------------------------------------------------------+ 10.18.3. Status of All My Jobs
Job #00012 is complete
Printed at 12:35 on 01/23/97
Job #09876 is printing An end user wants to get a list of all of the jobs he has submitted
to this Printer.
Job #12345 is queued Client IPP Printer
it is number 3 in the queue
Job #34567 is queued +---------------------------------------------------------- >
it is number 7 in the queue Please tell me the status of my jobs
Expires: May 16, 1999 < ----------------------------------------------------------+
Job #00012 is complete
Printed at 12:35 on 01/23/97
11.19. ASYNCHRONOUS NOTIFICATION Job #09876 is printing
11.19.1. Job Completion
An end-user wants to get notification of events that affect his print Job #12345 is queued
jobs. Print job completes without error. it is number 3 in the queue
Job #34567 is queued
it is number 7 in the queue
Client IPP Printer 10.19. ASYNCHRONOUS NOTIFICATION
< ----------------------------------------------------------+ 10.19.1. Job Completion
Print job #123 completed
11.19.2. Job Complete with Data An end-user wants to get notification of events that affect his print
jobs. Print job completes without error.
An end-user wants to get notification of events that affect his print Client IPP Printer
jobs. Print job completes, users asked for all end of job information.
Client IPP Printer < ----------------------------------------------------------+
Print job #123 completed
< ----------------------------------------------------------+ 10.19.2. Job Complete with Data
Print job #123 completed
- total pages printed = 15
- number of copies printed = 3
- total cost to print = $7.45
- pick up copies in room H-6, building 005
11.19.3. Print Job Fails An end-user wants to get notification of events that affect his print
jobs. Print job completes, users asked for all end of job
information.
An end-user wants to get notification of events that affect his print Client IPP Printer
jobs. Print job fails. Printer is unattended.
Client IPP Printer < ----------------------------------------------------------+
Print job #123 completed
- total pages printed = 15
- number of copies printed = 3
- total cost to print = $7.45
- pick up copies in room H-6, building 005
< ----------------------------------------------------------+ 10.19.3. Print Job Fails
Print job #123 failed
- total pages printed = 15
- number of pages submitted = 25
- printer-state = jammed
Expires: May 16, 1999 An end-user wants to get notification of events that affect his print
jobs. Print job fails. Printer is unattended.
11.20. CANCEL A JOB Client IPP Printer
The end-user submits a print job and later decides to cancel it. < ----------------------------------------------------------+
Print job #123 failed
- total pages printed = 15
- number of pages submitted = 25
- printer-state = jammed
Client IPP Printer 10.20. CANCEL A JOB
+---------------------------------------------------------- > The end-user submits a print job and later decides to cancel it.
< ----------------------------------------------------------+
Authentication.
+---------------------------------------------------------- > Client IPP Printer
Cancel job #1234
< ----------------------------------------------------------+ +---------------------------------------------------------- >
Job #1234 Canceled < ----------------------------------------------------------+
Authentication.
Expires: May 16, 1999 +---------------------------------------------------------- >
Cancel job #1234
11.21. END TO END SCENARIO - WITHIN AN ENTERPRISE < ----------------------------------------------------------+
Job #1234 Canceled
An office worker prints on shared departmental printers. All printers in 10.21. END TO END SCENARIO - WITHIN AN ENTERPRISE
the office are public, that is, no authentication or authorization is
required. Printers are protected from external access by a firewall. No
billing or accounting is required. Most printing is done from desktop
applications. A help desk is provided for printing problems. Standard
operating systems and applications are used. Drivers are available, but
are installed manually by support personnel. This scenario assumes that
drivers have been installed and that drivers are not IPP aware, that is,
they cannot communicate across an IPP connection to obtain status and
capabilities. IPP printers appear in application pull-down menus.
Printer configuration data is hard wired into the driver.
End-user selects print from the application pull down menu. An IPP An office worker prints on shared departmental printers. All printers
printer is selected from the list of Printers offered in the office are public, that is, no authentication or authorization
is required. Printers are protected from external access by a
firewall. No billing or accounting is required. Most printing is done
from desktop applications. A help desk is provided for printing
problems. Standard operating systems and applications are used.
Drivers are available, but are installed manually by support
personnel. This scenario assumes that drivers have been installed and
that drivers are not IPP aware, that is, they cannot communicate
across an IPP connection to obtain status and capabilities. IPP
printers appear in application pull-down menus. Printer
configuration data is hard wired into the driver.
The driver puts up a dialogue with hard-wired set of options End-user selects print from the application pull down menu. An IPP
for this printer. The end-user makes choices and submits job. printer is selected from the list of Printers offered
Client IPP Printer The driver puts up a dialogue with hard-wired set of options for this
+---------------------------------------------------------- > printer. The end-user makes choices and submits job.
Here is a print job
- job-name = memo-to-boss
- notify me by email when job is complete
- print on us-letter-white paper
- print 1 copy
- print at normal quality
- print on 1 side
- give me the state of the printer in response
The driver generates the print data and passes it to the IPP driver a Client IPP Printer
piece at a time as it is generated. +---------------------------------------------------------- >
Here is a print job
- job-name = memo-to-boss
- notify me by email when job is complete
- print on us-letter-white paper
- print 1 copy
- print at normal quality
- print on 1 side
- give me the state of the printer in response
+---------------------------------------------------------- > The driver generates the print data and passes it to the IPP driver a
Here is the print data piece at a time as it is generated.
< ----------------------------------------------------------+ +---------------------------------------------------------- >
Print data received, file is spooled Here is the print data
- printer state = printing
- time submitted = 2/12/97, 15:35
- current job state = spooled
Client adds this job to list of current jobs. List of jobs and state of < ----------------------------------------------------------+
each is available on a pull-down menu on the client. Print data received, file is spooled
- printer state = printing
- time submitted = 2/12/97, 15:35
- current job state = spooled
End-user selects job #1234 from list and clicks on it to see its status. Client adds this job to list of current jobs. List of jobs and state
of each is available on a pull-down menu on the client.
Expires: May 16, 1999 End-user selects job #1234 from list and clicks on it to see its
+---------------------------------------------------------- > status.
Give me the state of job #1234
and the state of the Printer
< ----------------------------------------------------------+ +---------------------------------------------------------- >
Job #1234 state = spooled Give me the state of job #1234
- it is number 3 in the queue and the state of the Printer
- printer state = printing
The job completes without error < ----------------------------------------------------------+
Job #1234 state = spooled
- it is number 3 in the queue
- printer state = printing
< ----------------------------------------------------------+ The job completes without error
Job #1234 completed
12 of 12 pages printed
Expires: May 16, 1999 < ----------------------------------------------------------+
Job #1234 completed
12 of 12 pages printed
11.22. END TO END SCENARIO - ACROSS ENTERPRISES 10.22. END TO END SCENARIO - ACROSS ENTERPRISES
An office worker in Company A needs to print an office document on a An office worker in Company A needs to print an office document on a
"public" printer at Company B, a business partner. Both companies have "public" printer at Company B, a business partner. Both companies
corporate firewalls so the print request must flow out of A's firewall have corporate firewalls so the print request must flow out of A's
and into B's firewall. The office worker can look at public printers in firewall and into B's firewall. The office worker can look at public
Company B's directory service. The document is generated by a desktop printers in Company B's directory service. The document is generated
application. Since the printer is "public" no authentication or by a desktop application. Since the printer is "public" no
authorization is required. A driver is downloaded. The driver is IPP authentication or authorization is required. A driver is downloaded.
aware, that is, it can communicate dynamically through the IPP protocol The driver is IPP aware, that is, it can communicate dynamically
layer to obtain information about the printer. through the IPP protocol layer to obtain information about the
printer.
Client Company B's Directory Service Client Company B's Directory Service
End user connects to B's Directory service End user connects to B's Directory service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a Printer with these characteristics Find a Printer with these characteristics
- public (no authorization or authentication required) - public (no authorization or authentication required)
- is in Lexington, building 004 - is in Lexington, building 004
- prints black and white - prints black and white
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer "Public-A" Printer "Public-A"
- http://www.lexmark.com/pubprinter/a - http://www.lexmark.com/pubprinter/a
Printer "Public-B" Printer "Public-B"
- http://www.lexmark.com/pubprinter/b - http://www.lexmark.com/pubprinter/b
End user selects Public-A End user selects Public-A
Client Public-A Client Public-A
+---------------------------------------------------------- > +---------------------------------------------------------- >
Where can I find a driver for you? Where can I find a driver for you?
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Drivers at http://www.lexmark.com/pubprinters/a/os245 Drivers at http://www.lexmark.com/pubprinters/a/os245
End user gets driver and installs it on his PC. End user gets driver and installs it on his PC.
End-user selects print from the application pull down menu. "Public-A" End-user selects print from the application pull down menu. "Public-
is selected from the list of Printers offered A" is selected from the list of Printers offered
+---------------------------------------------------------- > +---------------------------------------------------------- >
I'm going to submit a print job I'm going to submit a print job
give me your job submission attributes give me your job submission attributes
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Expires: May 16, 1999 Production attributes for this Printer are:
Production attributes for this Printer are: - medium-select = us-letter-white, us-legal-white
- medium-select = us-letter-white, us-legal-white - default is us-letter-white
- default is us-letter-white - copies = 1,2,3,4,5
- copies = 1,2,3,4,5 - default is 1
- default is 1 - print-quality = draft, normal, high
- print-quality = draft, normal, high - default is draft
- default is draft - sides = 1-sided, 2-sided-long-edge
- sides = 1-sided, 2-sided-long-edge - default is 2-sided-long-edge
- default is 2-sided-long-edge
Job scheduling attributes for this Printer are: Job scheduling attributes for this Printer are:
- job-priority = 1,2,3 - job-priority = 1,2,3
default = 3 default = 3
Driver puts up dialogue with available options and fills in the Driver puts up dialogue with available options and fills in the
defaults. defaults.
End-user makes choices and submits job End-user makes choices and submits job
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- job-name = memo-to-Don-Wright - job-name = memo-to-Don-Wright
- notify me by email when job is complete - notify me by email when job is complete
- print on us-letter-white paper - print on us-letter-white paper
- print 1 copy - print 1 copy
- print at normal quality - print at normal quality
- print on 1 side - print on 1 side
- give me the state of the printer in response - give me the state of the printer in response
The driver generates the print data and passes it to the IPP driver a The driver generates the print data and passes it to the IPP driver a
piece at a time. piece at a time.
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is the print data Here is the print data
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print data received, and spooling started Print data received, and spooling started
print job id = #1234 print job id = #1234
Print data received, file is spooled Print data received, file is spooled
- printer state = printing - printer state = printing
- time submitted = 2/12/97, 15:35 - time submitted = 2/12/97, 15:35
- current job state = spooled - current job state = spooled
Client adds this job to list of current jobs. List of jobs and state of Client adds this job to list of current jobs. List of jobs and state
each is available on a pull-down menu on the client. of each is available on a pull-down menu on the client.
End-user selects job #1234 from list and clicks on it to see its status. End-user selects job #1234 from list and clicks on it to see its
status.
Expires: May 16, 1999 +---------------------------------------------------------- >
+---------------------------------------------------------- > Give me the state of job #1234
Give me the state of job #1234 and the state of the Printer
and the state of the Printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Job #1234 state = spooled Job #1234 state = spooled
- it is number 3 in the queue - it is number 3 in the queue
- printer state = printing - printer state = printing
* The job completes without error * The job completes without error
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Job #1234 completed Job #1234 completed
12 of 12 pages printed 12 of 12 pages printed
Expires: May 16, 1999 10.23. END TO END SCENARIO - ON THE INTERNET
11.23. END TO END SCENARIO - ON THE INTERNET An executive in her hotel room is finishing an important presentation
on her laptop computer. She connects to a local print shop through
the web to get a copy of her charts printed for tomorrow's
presentation. She must find a print shop that is convenient and can
print color transparencies. She must download and temporarily install
a driver in order to generate the PDL required by the print shop.
Mutual authentication is required by the print shop and payment must
be made in advance. The job is encrypted on the wire to prevent
eavesdropping.
An executive in her hotel room is finishing an important presentation on End-user completes presentation. She goes to the web and connects to
her laptop computer. She connects to a local print shop through the web the SirZippy home page.
to get a copy of her charts printed for tomorrow's presentation. She
must find a print shop that is convenient and can print color
transparencies. She must download and temporarily install a driver in
order to generate the PDL required by the print shop. Mutual
authentication is required by the print shop and payment must be made in
advance. The job is encrypted on the wire to prevent eavesdropping.
End-user completes presentation. She goes to the web and connects Client SirZippy Directory Service
to the SirZippy home page. +---------------------------------------------------------- >
Client SirZippy Directory Service Find me a printer with these characteristics
+---------------------------------------------------------- > - Near Market Street in San Jose
- Prints color transparencies
- drivers can be downloaded
- supports privacy (encryption)
-
Find me a printer with these characteristics Available Printers matching these characteristics are looked up in the
- Near Market Street in San Jose Directory Service
- Prints color transparencies
- drivers can be downloaded
- supports privacy (encryption)
-
Available Printers matching these characteristics are looked up in the < ----------------------------------------------------------+
Directory Service
< ----------------------------------------------------------+ Printer "Color-A"
- located at 123 First Street in San Jose
- URI is http://www.SirZippy.com/FirstStreet/Color-A
- prints color transparencies
- 600 dpi laser
- driver ABC-Postscript-V1.3 available at this URI
- cost = $.75 per page
- authentication required to use printer
- payment required prior to printing
Printer "Color-B"
- located at 67 San Carlos Street, San Jose
- URI is http://www.SirZippy.com/SanCarlos/Color-B
- prints color transparencies
- 1200 dpi laser
- driver XYZ-PostScript-V4.3 available at this URI
- cost = $1.25 per page
- authentication required to use printer
- payment required prior to printing
- more information at this URI
Printer "Color-A" The user decides to use the first printer because it is closer. She
- located at 123 First Street in San Jose connects to the URI given to get a driver.
- URI is http://www.SirZippy.com/FirstStreet/Color-A
- prints color transparencies
- 600 dpi laser
- driver ABC-Postscript-V1.3 available at this URI
- cost = $.75 per page
- authentication required to use printer
- payment required prior to printing
Printer "Color-B" Client Driver URI
- located at 67 San Carlos Street, San Jose
- URI is http://www.SirZippy.com/SanCarlos/Color-B
- prints color transparencies
- 1200 dpi laser
- driver XYZ-PostScript-V4.3 available at this URI
- cost = $1.25 per page
- authentication required to use printer
- payment required prior to printing
-
Expires: May 16, 1999 +---------------------------------------------------------- >
- more information at this URI I need a driver for "Color-A"
The user decides to use the first printer because it is closer. She < ----------------------------------------------------------+
connects to the URI given to get a driver. Driver installer is at http://www.xerox.com/prtdrvrs
Client Driver URI Driver is installed
+---------------------------------------------------------- > User connects to
I need a driver for "Color-A" "Color-A"
< ----------------------------------------------------------+ Client IPP Printer "Color-A"
Driver installer is at http://www.xerox.com/prtdrvrs
Driver is installed +---------------------------------------------------------- >
< ----------------------------------------------------------+
Mutual authentication and exchange of secret keys
User connects to +---------------------------------------------------------- >
"Color-A" I'm going to submit a print job
give me your job submission attributes
Client IPP Printer "Color-A" < ----------------------------------------------------------+
Production attributes for this Printer are:
- medium-select = us-letter-white, us-legal-white
- default is us-letter-white
- copies = 1,2,3,4,5
- default is 1
- print-quality = draft, normal, high
- default is draft
- sides = 1-sided, 2-sided-long-edge
- default is 2-sided-long-edge
+---------------------------------------------------------- > Job scheduling attributes for this Printer are:
< ----------------------------------------------------------+ - job-priority = 1,2,3
Mutual authentication and exchange of secret keys default = 3
+---------------------------------------------------------- > Driver puts up dialogue with available options and fills in the
I'm going to submit a print job defaults.
give me your job submission attributes
< ----------------------------------------------------------+ End-user makes choices and submits job
Production attributes for this Printer are:
- medium-select = us-letter-white, us-legal-white
- default is us-letter-white
- copies = 1,2,3,4,5
- default is 1
- print-quality = draft, normal, high
- default is draft
- sides = 1-sided, 2-sided-long-edge
- default is 2-sided-long-edge
Job scheduling attributes for this Printer are: +---------------------------------------------------------- >
- job-priority = 1,2,3 Here is a print job
default = 3
Driver puts up dialogue with available options and fills in the - job-name = presentation
defaults. - notify me by email when job is complete
- print on us-letter-transparency
- print 1 copy
- print at high quality
- print by 9:00 am tomorrow morning
- give me the state of the printer in response
End-user makes choices and submits job The driver generates the print data and passes it to the IPP driver a
piece at a time.
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is the print data
Expires: May 16, 1999 < ---------------------------------------------------------+
Print data received, and spooling started
print job id = #1234
- job-name = presentation Print data received, file is spooled
- notify me by email when job is complete - printer state = printing
- print on us-letter-transparency - time submitted = 2/12/97, 15:35
- print 1 copy - current job state = held, waiting for payment
- print at high quality
- print by 9:00 am tomorrow morning
- give me the state of the printer in response
The driver generates the print data and passes it to the IPP driver a +---------------------------------------------------------- >
piece at a time. < ----------------------------------------------------------+
Payment transaction
+---------------------------------------------------------- > < ----------------------------------------------------------+
Here is the print data Job is scheduled to print, pick up after 9:00am tomorrow
Thank you for using SirZippy
< ---------------------------------------------------------+ 11. Full Copyright Statement
Print data received, and spooling started
print job id = #1234
Print data received, file is spooled Copyright (C) The Internet Society (1999). All Rights Reserved.
- printer state = printing
- time submitted = 2/12/97, 15:35
- current job state = held, waiting for payment
+---------------------------------------------------------- > This document and translations of it may be copied and furnished to
< ----------------------------------------------------------+ others, and derivative works that comment on or otherwise explain it
Payment transaction or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
< ----------------------------------------------------------+ The limited permissions granted above are perpetual and will not be
Job is scheduled to print, pick up after 9:00am tomorrow revoked by the Internet Society or its successors or assigns.
Thank you for using SirZippy
Expires: May 16, 1999 This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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