< draft-ietf-ipp-req-02.txt   draft-ietf-ipp-req-03.txt >
INTERNET DRAFT F.D. Wright, Lexmark International INTERNET DRAFT F.D. Wright, Lexmark International
<draft-ietf-ipp-req-02.txt> <draft-ietf-ipp-req-03.txt>
June 30, 1997 Expires: Dec 30, 1998 November 16, 1998 Expires: May 16, 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 This document is an Internet-Draft. Internet-Drafts are working
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areas, and its working groups. Note that other groups may also its working groups. Note that other groups may also distribute working
distribute working documents as Internet-Drafts. documents as Internet-Drafts.
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months and may be updated, replaced, or obsoleted by other and may be updated, replaced, or obsoleted by other documents at any
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in progress.''
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Abstract Abstract
This document is one of a set of documents, which together This document is one of a set of documents, which together describe all
describe all aspects of a new Internet Printing Protocol (IPP). aspects of a new Internet Printing Protocol (IPP). IPP is an
IPP is an application level protocol that can be used for application level protocol that can be used for distributed printing
distributed printing using Internet tools and technologies. The using Internet tools and technologies. This document takes a broad look
protocol is heavily influenced by the printing model introduced at distributed printing functionality, and it enumerates real-life
in the Document Printing Application (DPA) [ISO10175] standard. scenarios that help to clarify the features that need to be included in
Although DPA specifies both end user and administrative features, a printing protocol for the Internet. It identifies requirements for
IPP version 1.0 (IPP/1.0) focuses only on end user functionality. 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
The full set of IPP documents includes: The full set of IPP documents includes:
Design Goals for an Internet Printing Protocol (this document) Design Goals for an Internet Printing Protocol (this document)
(informational)
Rationale for the Structure and Model and Protocol for the Rationale for the Structure and Model and Protocol for the
Internet Printing Protocol [IPP-RAT] (informational) Internet Printing Protocol [IPP-RAT]
Internet Printing Protocol/1.0: Model and Semantics [IPP MOD] 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: Encoding and Transport [IPP-PRO]
Mapping between LPD and IPP Protocols [IPP LPD] (informational) Internet Printing Protocol/1.0: Implementer's Guide [IPP-IIG]
Copyright(C) The Internet Society 1998. All Rights Reserved. Mapping between LPD and IPP Protocols [IPP LPD]
The design goals document, "Design Goals for an Internet Printing The "Rationale for the Structure and Model and Protocol for the Internet
Protocol", takes a broad look at distributed printing Printing Protocol" document describes IPP from a high level view,
functionality, and it enumerates real-life scenarios that help to defines a roadmap for the various documents that form the suite of IPP
clarify the features that need to be included in a printing specifications, and gives background and rationale for the IETF working
protocol for the Internet. It identifies requirements for three group's major decisions.
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
document, "Rationale for the Structure and Model and Protocol for
the Internet Printing Protocol", 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 document,
"Internet Printing Protocol/1.0: Model and Semantics", describes
simplified model with abstract objects, their attributes, and
their operations. The model introduces a Printer and a Job. The
Job supports multiple documents per Job. The model document also
addresses how security, internationalization, and directory
issues are addressed. The protocol specification, "Internet
Printing Protocol/1.0: Encoding and Transport", is a formal
mapping of the abstract operations and attributes defined in the
model document onto HTTP/1.1. The protocol specification defines
the encoding rules for a new Internet media type called
"application/ipp". The "Mapping between LPD and IPP Protocols"
gives some advice to implementers of gateways between IPP and LPD
(Line Printer Daemon) implementations.
Expires: Dec 30, 1998 The "Internet Printing Protocol/1.0: Model and Semantics" document
Copyright(C) The Internet Society 1998. All Rights Reserved. describes a simplified model consisting of abstract objects, their
attributes, and their operations that is independent of encoding and
transport. The model consists of a Printer and a Job object. The Job
optionally supports multiple documents. IPP 1.0 semantics allow end-
users and operators to query printer capabilities, submit print jobs,
inquire about the status of print jobs and printers, and cancel print
jobs. This document also addresses security, internationalization, and
directory issues.
TABLE OF CONTENTS The "Internet Printing Protocol/1.0: Encoding and Transport" document is
a formal mapping of the abstract operations and attributes defined in
the model document onto HTTP/1.1. It defines the encoding rules for a
new Internet media type called "application/ipp".
1. TERMINOLOGY.................................................5 The "Internet Printing Protocol/1.0: Implementer's Guide" document gives
2. DESIGN GOALS................................................7 insight and advice to implementers of IPP clients and IPP objects. It
2.1. End-user ................................................7 is intended to help them understand IPP/1.0 and some of the
2.1.1. Finding or locating a printer. ......................7 considerations that may assist them in the design of their client and/or
2.1.2. Create an instance of the printer. ..................8 IPP object implementations. For example, a typical order of processing
2.1.3. Viewing the status and capabilities of a printer. ...8 requests is given, including error checking. Motivation for some of the
2.1.4. Submitting a print job. .............................9 specification decisions is also included.
2.1.5. Viewing the status of a submitted print job. .......10
2.1.6. Canceling a Print Job ..............................10
2.2. Operator (NOT REQUIRED FOR V1.0) .......................10
2.2.1. Alerting. ..........................................11
2.2.2. Changing Print and Job Status. .....................11
2.3. Administrator (NOT REQUIRED FOR v1.0) ..................11
3. OBJECTIVES OF THE PROTOCOL.................................13
3.1. SECURITY CONSIDERATIONS ................................13
3.2. Interaction with LPD (RFC1179) .........................14
3.3. Extensibility ..........................................15
3.4. Firewalls ..............................................15
3.5. Internationalization ...................................15
4. IPP SCENARIOS..............................................17
4.1. Printer Discovery ......................................18
4.2. Driver Installation ....................................19
4.3. Submitting a Print Job .................................19
4.4. Getting Status/Capabilities ............................20
4.5. Asynchronous Notification ..............................21
4.6. Job Canceling ..........................................21
5. COPYRIGHT..................................................23
6. REFERENCES.................................................24
7. ACKNOWLEDGMENTS............................................25
8. AUTHOR'S ADDRESS...........................................25
9. APPENDIX - DETAILED SCENARIOS..............................26
9.1. Printer discovery within an enterprise .................26
9.2. Printer discovery across enterprises ...................28
9.3. Printer discovery on the Internet -logical operations ..29
9.4. Printer discovery on the Internet - authentication .....30
9.5. Driver Download ........................................32
9.6. Submitting a print job as a file .......................33
9.7. Submitting a print job with two documents ..............34
9.8. Submitting a print job as a file, printing fails .......35
9.9. Submitting a print job with authentication, PRIVACY and
payment .....................................................35
9.10. Submitting a print job with decryption error ..........37
9.11. Submitting a print job with authentication ............39
Expires: Dec 30, 1998 The "Mapping between LPD and IPP Protocols" document gives some advice
Copyright(C) The Internet Society 1998. All Rights Reserved. to implementers of gateways between IPP and LPD (Line Printer Daemon)
implementations.
9.12. Submitting a print job generated dynamically ..........40 Expires: May 16, 1999
9.13. Submitting a print job with a Printer jam - CANCELED ..41 TABLE OF CONTENTS
9.14. Submitting a print job with a Printer jam - recovered .42
9.15. Submitting a print job with server pull ...............43
9.16. Submitting a print job with referenced resources ......44
9.17. Getting Capabilities ..................................45
9.17.1. Submission Attributes .............................45
9.17.2. Printer Capabilities ..............................45
9.18. Getting Status ........................................46
9.18.1. Printer State/Status ..............................46
9.18.2. Job Status ........................................46
9.18.3. Status of All My Jobs .............................46
9.19. Asynchronous Notification .............................48
9.19.1. Job Completion ....................................48
9.19.2. Job Complete with Data ............................48
9.19.3. Print Job Fails ...................................48
9.20. Cancel a job ..........................................49
9.21. End to end Scenario - within an enterprise ............50
9.22. End to end Scenario - across enterprises ..............52
9.23. End to End Scenario - on the internet .................55
Expires: Dec 30, 1998 1. INTRODUCTION.......................................................5
Copyright(C) The Internet Society 1998. All Rights Reserved. 2. TERMINOLOGY........................................................5
3. DESIGN GOALS.......................................................7
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
1. TERMINOLOGY Expires: May 16, 1999
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
Internet Printing for the purposes of this document is the Expires: May 16, 1999
application of Internet tools, programs, servers and networks to
allow end-users to print to a remote printer using, after initial
setup or configuration, the same methods, operations and
paradigms as would be used for a locally attached or a local area
network attached printer. This could include the use of HTTP
servers and browsers and other applications for providing static,
dynamic and interactive printer locating services, user
installation, selection, configuration, print job submission,
printer capability inquiry and status inquiry of remote printers
and jobs.
For the purposes of this document, a WEB Browser is software 1. INTRODUCTION
available from a number of sources including but not limited to
the following: Microsoft Internet Explorer, NCSA Mosaic, Netscape
Navigator, Sun Hot Java!. The major task of these products is to
use the Hypertext Transport Protocol (HTTP) to retrieve,
interpret and display Hypertext Markup Language (HTML). These
products are often a part of a complete Internet Printing system
because they are often used as a means of obtaining the status of
or more information about the printing system; however, they may
not be present in all implementations.
Throughout this document, 'printer' shall be interpreted to The IPP protocol is heavily influenced by the printing model introduced
include any device which is capable of marking on a piece of in the Document Printing Application (DPA) [ISO10175] standard.
media using any available technology. These design goals do not Although DPA specifies both end user and administrative features, IPP
include support for multi-tiered printing solutions involving version 1.0 (IPP/1.0) focuses only on end user functionality.
servers (single or multiple) logically in front of the actual
printing device yet all such configurations shall be supported
but shall appear to the end-user as only a single device.
Throughout this document 'driver' refers to the code installed in 2. TERMINOLOGY
some client operating system to generate the print data stream
for the intended printer. Some computing environments may not
include a separate printer driver. Rather, the generation of the
proper print data stream is accomplished in an application on
that computer. How such a computer environment or application is
updated to support a new printer now made available using IPP is
outside the scope of IPP. The actual details for installing a
printer driver are operating system dependent and are also
outside the scope of IPP. See also section 3.1 (SECURITY
Expires: Dec 30, 1998 Internet Printing for the purposes of this document is the application
Copyright(C) The Internet Society 1998. All Rights Reserved. of Internet tools, programs, servers and networks to allow end-users to
print to a remote printer using, after initial setup or configuration,
the same methods, operations and paradigms as would be used for a
locally attached or a local area network attached printer. This could
include the use of HTTP servers and browsers and other applications for
providing static, dynamic and interactive printer locating services,
user installation, selection, configuration, print job submission,
printer capability inquiry and status inquiry of remote printers and
jobs.
CONSIDERATIONS) for security implications of driver download and For the purposes of this document, a WEB Browser is software available
installation. from a number of sources including but not limited to the following:
Microsoft Internet Explorer, NCSA Mosaic, Netscape Navigator, Sun Hot
Java!. The major task of these products is to use the Hypertext
Transport Protocol (HTTP) to retrieve, interpret and display Hypertext
Markup Language (HTML). These products are often a part of a complete
Internet Printing system because they are often used as a means of
obtaining the status of or more information about the printing system;
however, they may not be present in all implementations.
The IPP protocol will support the following physical Throughout this document, 'printer' shall be interpreted to include any
configurations: device which is capable of marking on a piece of media using any
available technology. These design goals do not include support for
multi-tiered printing solutions involving servers (single or multiple)
logically in front of the actual printing device yet all such
configurations shall be supported but shall appear to the end-user as
only a single device.
- An IPP client talking to an IPP Printer object imbedded in a Throughout this document 'driver' refers to the code installed in some
single, physical output device. client operating system to generate the print data stream for the
- An IPP Client talking to a server containing one or more IPP intended printer. Some computing environments may not include a separate
Printer objects. Each Printer object is associated with printer driver. Rather, the generation of the proper print data stream
exactly one physical output device supported by the server. is accomplished in an application on that computer. How such a computer
The protocol between the server and the output devices is environment or application is updated to support a new printer now made
undefined. available using IPP is outside the scope of IPP. The actual details for
- An IPP Client talking to an IPP Printer object in a server. installing a printer driver are operating system dependent and are also
The Printer object is associated with one or more physical outside the scope of IPP. See also section 4.1 (SECURITY CONSIDERATIONS)
output devices, but the client only sees the Printer object, for security implications of driver download and installation.
which is an abstraction and represents all of the associated
physical output devices. The protocol between the server and
the physical output devices is undefined.
Throughout this document, certain design goals will be identified The IPP protocol will support the following physical configurations:
as 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 enabler, of a complete Internet Printing solution.
For example printer instance creation is not performed by but is
enabled by the protocol. Globally, none of the operator or
administrators wants and needs are included in the design goals
for version 1.0. Some of the end-user wants and needs may also
be excluded from version 1.0 and will be so noted in the
description of them. Subsequent versions of the protocol (e.g.
V2.0) may include support for these initially excluded wants and
needs.
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved. - An IPP client talking to an IPP Printer object imbedded in a single,
physical output device.
- An IPP Client talking to a server containing one or more IPP Printer
objects. Each Printer object is associated with exactly one physical
output device supported by the server. The protocol between the
server and the output devices is undefined.
- An IPP Client talking to an IPP Printer object in a server. The
Printer object is associated with one or more physical output
devices, but the client only sees the Printer object, which is an
abstraction and represents all of the associated physical output
devices. The protocol between the server and the physical output
devices is undefined.
2. DESIGN GOALS Throughout this document, certain design goals will be identified as 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
enabler, of a complete Internet Printing solution. For example printer
instance creation is not performed by but is enabled by the protocol.
Globally, none of the operator or administrators wants and needs are
included in the design goals for version 1.0. Some of the end-user
wants and needs may also be excluded from version 1.0 and will be so
noted in the description of them. Subsequent versions of the protocol
(e.g. V2.0) may include support for these initially excluded wants and
needs.
Expires: May 16, 1999
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 operator, and administrator. The goals defined here are only those that
those that need to be addressed by an Internet printing protocol. need to be addressed by an Internet printing protocol. Other wants and
Other wants and needs, such as that the operator needs physical needs, such as that the operator needs physical access to the printer
access to the printer (e.g. to be able to load paper or clear (e.g. to be able to load paper or clear jams) are not covered by this
jams) are not covered by this document. Section 4 contains document. Section 5 contains scenarios which provide more detailed
scenarios which provide more detailed examples of the entire examples of the entire process including discovery, status, printing and
process including discovery, status, printing and end-of-job end-of-job reporting.
reporting.
2.1. END-USER 3.1. END-USER
An end-user of a printer accepting jobs through the Internet is An end-user of a printer accepting jobs through the Internet is one of
one of the roles in which humans act. The end-user is the person the roles in which humans act. The end-user is the person that will
that will submit a job to be printed on the printer. submit a job to be printed on the printer.
The wants and needs of the end-user are broken down into six The wants and needs of the end-user are broken down into six categories:
categories: finding/locating a printer, creating a local instance finding/locating a printer, creating a local instance of a printer,
of a printer, viewing printer status, viewing printer viewing printer status, viewing printer capabilities, submitting a print
capabilities, submitting a print job, viewing print job status, job, viewing print job status, altering the attributes of a print job.
altering the attributes of a print job.
2.1.1. 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 End-users want to be able to find and locate printers to which they are
they are authorized to print. They want to be able to perform authorized to print. They want to be able to perform this function
this function using a standard WEB browser or other application. using a standard WEB browser or other application. Multiple criteria
Multiple criteria can be applied to find the printers needed. can be applied to find the printers needed. These criteria include but
These criteria include but are not limited to: are not limited to:
- by name (Printer 1, Joes-color-printer, etc.) - by name (Printer 1, Joes-color-printer, etc.)
- by geographic location (bldg 1, Kentucky, etc.) - by geographic location (bldg 1, Kentucky, etc.)
- by capability or attribute (color, duplex, legal paper, etc.) - by capability or attribute (color, duplex, legal paper, etc.)
Additionally, while it is outside of scope of IPP, end-users want Additionally, while it is outside of scope of IPP, end-users want to be
to be able to limit the scope of their searching to: able to limit the scope of their searching to:
- inside a functional sub-domain - inside a functional sub-domain
- include only a particular domain (lexmark.com) - include only a particular domain (lexmark.com)
- exclude specified domains - exclude specified domains
Expires: Dec 30, 1998 While an Internet printing protocol may not of itself include this
Copyright(C) The Internet Society 1998. All Rights Reserved. function, IPP must define and enable a directory schema which will
provide the necessary information for a directory service implementation
While an Internet printing protocol may not of itself include to consistently represent printers by their IPP attributes.
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.
2.1.2. Create an instance of the printer. 3.1.2. Create an instance of the printer.
After finding the desired printer, an end-user needs to be able Expires: May 16, 1999
to create a local instance of that printer within the end-user After finding the desired printer, an end-user needs to be able to
operating system or desktop. This local instance will vary create a local instance of that printer within the end-user operating
depending upon the printing paradigm of the operating system. system or desktop. This local instance will vary depending upon the
For example, some UNIX users will only want a queue or a printing paradigm of the operating system. For example, some UNIX users
reference to a remote printer created on their machine while will only want a queue or a reference to a remote printer created on
other UNIX users and Windows NT users will want the queue and their machine while other UNIX users and Windows NT users will want the
also the necessary icons and registry entries to be created and queue and also the necessary icons and registry entries to be created
initialized. Where required, drivers may need to be downloaded and initialized. Where required, drivers may need to be downloaded from
from some repository and installed on the computer. All some repository and installed on the computer. All necessary
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 by the end-user. Once the local instance of the printer has been
instance of the printer has been installed, it shall appear to installed, it shall appear to the end-user of the operating system and
the end-user of operating system and to the applications running to the applications running there as any other printer (local, local
there as any other printer (local, local area network connected, area network connected, or network operating system connected) on the
or network operating system connected) on the end-user desktop or end-user desktop or environment. IPP's role in this goal is simply to
environment. An IPP's role in this goal is simply to enable the enable the creation of the printer instance providing information such
creation of the printer instance providing information such as as where to locate a printer driver for this printer, as an attribute of
where to locate a printer driver for this printer, as an an IPP Printer.
attribute of an IPP Printer.
2.1.3. 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- Before using a selected printer or, in fact at any time, the end-user
user needs the ability to verify the characteristics and status needs the ability to verify the characteristics and status of both
of both printers and jobs queued for that printer. When checking printers and jobs queued for that printer. When checking the
the characteristics of a printer, the end-user typically wants to characteristics of a printer, the end-user typically wants to be able to
be able to determine the capability of the device, e.g.: 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 When checking the status of the printer and its print jobs, the end-user
end-user typically wants to be able to determine: typically wants to be able to determine:
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- 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)
2.1.4. Submitting a print job. 3.1.4. Submitting a print job.
Once the desired printer has been located and installed, the end- Once the desired printer has been located and installed, the end-user
user wants to print to that printer from normal applications wants to print to that printer from normal applications using standard
using standard methods. These normal applications include such methods. These normal applications include such programs as word
programs as word processors, spreadsheets, data-base processors, spreadsheets, data-base applications, WEB browsers,
applications, WEB browsers, production printing applications, production printing applications, etc. Additionally, the end-user may
etc. Additionaly, the end-user may want to print a file already want to print a file already existing on the end-user's computer --
existing on the end-user's computer -- "simple push." In "simple push." In addition to printing from an application and simple
addition to printing from an application and simple push, the push, the end-user needs to have the ability to submit a print job by
end-user needs to have the ability to submit a print job by reference. Printing by reference is defined to mean as submitting a job
reference. Printing by reference is defined to mean as
submitting a job by providing a reference to an existing
document. The reference, a URI, will be resolved before the
actual print process occurs. Submitting a job by reference
relieves the user from downloading the job from 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 Expires: May 16, 1999
matches the capability of the printer. This can be done by one by providing a reference to an existing document. The reference, a URI,
of the following (all of which are outside of scope of the IPP will be resolved before the actual print process occurs. Submitting a
protocol): job by reference relieves the user from downloading the document from
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
the capability of the printer. This can be done by one of 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 A standard action shall be defined should the job's requirements not
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 printing process, the protocol must support job-to-
printer capability matching (all implementations are not
necessarily required to implement this function.) This matching
capability requires knowing both the printer's capabilities and
attributes and those capabilities and attributes required by the
job. Actions taken when a print job requires capabilities or
attributes that are not available on the printer vary and can
include but are not limited to:
Expires: Dec 30, 1998 Because the end-user does not want to know the details of the underlying
Copyright(C) The Internet Society 1998. All Rights Reserved. printing process, the protocol must support job-to-printer capability
matching (all implementations are not necessarily required to implement
this function.) This matching capability requires knowing both the
printer's capabilities and attributes and those capabilities and
attributes required by the job. Actions taken when a print job requires
capabilities or attributes that are not 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 Print jobs will also be submitted by background or batch applications
applications without human intervention. without human intervention.
End-users need the ability to set certain print job parameters at End-users need the ability to set certain print job parameters at the
the time the job is submitted. These parameters include but are time the job is submitted. These parameters include but are not limited
not limited to: to:
- number of copies - number of copies
- single or two sided printing - single or two sided printing
- finishing - finishing
- job priority - job priority
2.1.5. 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 view the status of that job (i.e. job waiting, job
printing, job 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, automatic notification of the completion of that job is also
required. Notification means are not defined by the protocol but
the protocol must provide a means of enabling and disabling the
notification.
2.1.6. Canceling a Print Job
While a job is waiting to be printing or has been started but not After a job has been submitted to a printer, the end-user needs a way to
yet completed, the original creator/submitter of the print job view the status of that job (i.e. job waiting, job printing, job done)
(i.e. the end-user) shall be able to cancel the job entirely (job and to determine where the job is in the print queue.
is waiting) or the remaining portion of it (job is printing.)
Altering the print job itself is not a V1.0 design goal.
2.2. OPERATOR (NOT REQUIRED FOR V1.0) 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.
An operator of a printer accepting jobs through the Internet is Expires: May 16, 1999
one of the roles in which humans act. The operator has the Notification means are not defined by the protocol but the protocol must
provide a means of enabling and disabling the notification.
Expires: Dec 30, 1998 3.1.6. Canceling a Print Job
Copyright(C) The Internet Society 1998. All Rights Reserved.
responsibility of monitoring the status of the printer as well as While a job is waiting to be printing or has been started but not yet
managing and controlling the jobs at the device. These completed, the original creator/submitter of the print job (i.e. the
responsibilities include but are not limited to the replenishing end-user) shall be able to cancel the job entirely (job is waiting) or
of supplies (ink, toner, paper, etc.), the clearing of minor the remaining portion of it (job is printing.) Altering the print job
errors (paper jams, etc.) and the re-prioritization of end-user itself is not a V1.0 design goal.
jobs. 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- 3.2. OPERATOR (NOT REQUIRED FOR V1.0)
user but may include additional privileges. For example, an
operator may be able to view all print jobs on a printer while
the end-user may only be able to see his own jobs.
2.2.1. Alerting. An operator of a printer accepting jobs through the Internet is one of
the roles in which humans act. The operator has the responsibility of
monitoring the status of the printer as well as managing and controlling
the jobs at the device. These responsibilities include but are not
limited to the replenishing of supplies (ink, toner, paper, etc.), the
clearing of minor errors (paper jams, etc.) and the re-prioritization of
end-user jobs. Operator wants and needs will not be addressed by V1.0
of the protocol.
One of the required operator functions is having the ability to The wants and needs of the operator include all those of the end-user
discover or to be alerted to changes in the status of a printer but may include additional privileges. For example, an operator may be
particularly those changes that cause a printer to stop printing able to view all print jobs on a printer while the end-user might only
and to be able to correct those problems. As such, an Internet be able to see his own jobs.
printing protocol shall be able to alert a designated operator or
operators to these conditions such as 'out of paper', 'out of
ink', etc. Additionally. the operator shall be able to,
asynchronous to other printer activity, inquire as to a printer's
or a job's status.
2.2.2. Changing Print and Job Status. 3.2.1. Alerting.
Another of the required operator functions is the ability to One of the required operator functions is having the ability to discover
affect changes to printer and job status remotely. For example, or to be alerted to changes in the status of a printer particularly
the operator will need to be able to re-prioritize or cancel any those changes that cause a printer to stop printing and to be able to
print jobs on a printer to which the operator has authority. correct those problems. As such, an Internet printing protocol shall be
able to alert a designated operator or operators to these conditions
such as 'out of paper', 'out of ink', etc. Additionally. the operator
shall be able to, asynchronous to other printer activity, inquire as to
a printer's or a job's status.
2.3. ADMINISTRATOR (NOT REQUIRED FOR V1.0) 3.2.2. Changing Print and Job Status.
An administrator of a printer accepting jobs through the Internet Another of the required operator functions is the ability to affect
is one of the roles in which humans act. The administrator has changes to printer and job status remotely. For example, the operator
the responsibility of creating the printer instances and will need to be able to re-prioritize or cancel any print jobs on a
controlling the authorization of other end-users and operators. printer to which the operator has authority.
Administrator wants and needs will not be addressed by V1.0 of
the protocol.
The wants and needs of the administrator include all those of the Expires: May 16, 1999
end-user and, in some environments, some or all of those of the 3.3. ADMINISTRATOR (NOT REQUIRED FOR V1.0)
operator. Minimally, the administrator must also have the tools,
Expires: Dec 30, 1998 An administrator of a printer accepting jobs through the Internet is one
Copyright(C) The Internet Society 1998. All Rights Reserved. of the roles in which humans act. The administrator has the
responsibility of creating the printer instances and controlling the
authorization of other end-users and operators. Administrator wants and
needs will not be addressed by V1.0 of the protocol.
programs, utilities and supporting protocols available to be able The wants and needs of the administrator include all those of the end-
to: user and, in some environments, some or all of those of the operator.
Minimally, the administrator must also have the tools, 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 which the status capabilities and other information about printers
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 The administrator must have the capability to perform all the above
above tasks locally or remotely to the printer. tasks locally or remotely to the printer.
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
3. OBJECTIVES OF THE PROTOCOL
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 least initially, address the operator or administrator
wants and needs (V2.0).
The protocol defined shall be independent of the operating system Expires: May 16, 1999
of both the client and the server. Generally, any platform 4. OBJECTIVES OF THE PROTOCOL
capable of supporting a WEB Browser should be capable of being a
client. Generally, any platform providing a WEB/HTTP server and
printing services should be capable of being a server. Usage of
the WEB Browser and Server is not required for IPP; the operating
system, operating system extensions or other applications may
provide IPP functionality directly.
In many environments such as Windows 95, Windows NT and OS/2, the The protocol to be defined by an Internet printing working group will
print data is created and transmitted to the printer on the fly address the wants and needs of the end-user (V1.0). It will not, at
rather than being created, spooled and then transmitted to the least initially, address the operator or administrator wants and needs
printer (a typical UNIX method.) The Internet Printing Protocol (V2.0).
must properly handle either methodology and make this transparent
to the end-user.
3.1. SECURITY CONSIDERATIONS The protocol defined shall be independent of the operating system of
both the client and the server. Generally, any platform capable of
supporting a WEB Browser should be capable of being a client.
Generally, any platform providing a WEB/HTTP server and printing
services should be capable of being a server. Usage of the WEB Browser
and Server is not required for IPP; the operating system, operating
system extensions or other applications may provide IPP functionality
directly.
It is required that the Internet Printing Protocol be able to In many environments such as Windows 95, Windows NT and OS/2, the print
operate within a secure environment. Wherever reasonable, IPP data is created and transmitted to the printer on the fly rather than
ought to make use of existing security protocols and services. being created, spooled and then transmitted to the printer (a typical
IPP will not invent new security features when the design goals UNIX method.) The Internet Printing Protocol must properly handle
described in this document can be met by existing protocols and either methodology and make this transparent to the end-user.
services. Examples of such services include Transport Layer
Security (TLS) and HTTP Digest Authentication.
Since we cannot anticipate the security levels or the specific 4.1. SECURITY CONSIDERATIONS
threats that any given IPP print administrator may be concerned
with, IPP must be capable of operating with different security
mechanisms and policies as required by the individual
installation. The initial security needs of IPP are derived from
two primary considerations. First, the printing environments
described in this document take into account that the client, the
Printer, and the document to be printed may each exist in
different security domains. When objects are in different
security domains the design goals for authentication and message
Expires: Dec 30, 1998 It is required that the Internet Printing Protocol be able to operate
Copyright(C) The Internet Society 1998. All Rights Reserved. within a secure environment. Wherever reasonable, IPP ought to make use
of existing security protocols and services. IPP will not invent new
security features when the design goals described in this document can
be met by existing protocols and services. Examples of such services
include Secure Socket Layer Version 3 (SSL3) [SSL] and HTTP Digest
Access Authentication [RFC2069]. Note: SSL3 is not on the IETF
standards track.
protection may be much stronger than when they are all in the Since we cannot anticipate the security levels or the specific threats
same domain. that any given IPP print administrator may be concerned with, IPP must
be capable of operating with different security mechanisms and policies
as required by the individual installation. The initial security needs
of IPP are derived from two primary considerations. First, the printing
environments described in this document take into account that the
client, the Printer, and the document to be printed may each exist in
different security domains. When objects are in different security
domains the design goals for authentication and 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 Secondly, the sensitivity and value of the content being printed will
will vary from one instance of a print job to another. For vary from one instance of a print job to another. For example, a
example, a publicly available document does not need the same publicly available document does not need the same level of protection
level of protection as a payroll document does. Message as a payroll document does. Message protection design goals include
protection design goals include data origin authentication, data origin authentication, privacy, integrity, and non-repudiation.
privacy, integrity, and non-repudiation.
In many environments (e.g. Windows, OS/2) a printer driver may be Expires: May 16, 1999
needed to create the proper datastream for printer. This In many environments (e.g. Windows, OS/2) a printer driver may be needed
document discusses downloading such a new driver from a variety to create the proper datastream for printer. This document discusses
of sources. Downloading and installing any software, including downloading such a new driver from a variety of sources. Downloading
drivers) on a computer exposes that computer to a number of and installing any software, including drivers) on a computer exposes
security risks including but not limited to: that computer to a number of security risks including but not limited
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 As such, proper security considerations and actions need to be taken by
taken by the user and/or a system administrator to prevent the the user and/or a system administrator to prevent the compromising of
compromising of the computer. IPP design goals do not include the computer. Administrators should configure downloading mechanism for
addressing the security considerations associated with the printer drivers in such a way as to be able to verify the source of
downloading and installing of software (including drivers) on a driver software and encrypt or otherwise protect that software during
computer. download.
Examples including security considerations can be found in
sections 4 (IPP SCENARIOS) and 9 (APPENDIX - DETAILED SCENARIOS)
later in this document.
3.2. INTERACTION WITH LPD (RFC1179)
Many versions of UNIX and in fact other operating systems provide
a means of printing as described in RFC1179 (Line Printer Daemon
Protocol.) This document describes the file formats for the
control and data files as well as the messages used by the
protocol. Because of the simplistic approach taken by this
protocol, many manufacturers have include proprietary
enhancements and extensions to 'lpd.' Because of this divergence
and due to other design goals described in this document, there
is no requirement for backward compatibility or interoperability
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
with 'lpd'. However, a mapping of LPD functionality and IPP Examples including security considerations can be found in sections 5
functionality shall be provided so as to enable a gateway between (IPP SCENARIOS) and 11 (APPENDIX - DETAILED SCENARIOS) later in this
LPD and IPP. document.
3.3. EXTENSIBILITY 4.2. INTERACTION WITH LPD (RFC1179)
The Internet Printing Protocol shall be extensible by several Many versions of UNIX and in fact other operating systems provide a
means that facilitate interoperability and prevent implementation means of printing as described in [RFC1179] (Line Printer Daemon
collisions: Protocol.) This document describes the file formats for the control and
data files as well as the messages used by the protocol. Because of the
simplistic approach taken by this protocol, many manufacturers have
include proprietary enhancements and extensions to 'lpd.' Because of
this divergence and due to other design goals described in this
document, there is no requirement for backward compatibility or
interoperability with 'lpd'. However, a mapping of LPD functionality
and IPP functionality shall be provided so as to enable a gateway
between LPD and IPP.
- by providing a process whereby implementers can submit 4.3. EXTENSIBILITY
proposals for registration of new attributes and new
enumerated values for existing attributes.
* that require review and approval. The Internet The Internet Printing Protocol shall be extensible by several means that
Assigned Number Authority (IANA) will be the repository facilitate interoperability and prevent implementation collisions:
for such accepted registration proposals after review.
* that do not require review and approval. IANA will - by providing a process whereby implementers can submit proposals
be the repository for such registrations. for registration of new attributes and new enumerated values for
existing attributes.
- by providing syntax in the protocol so that implementers * that require review and approval. The Internet Assigned
may add private (i.e. unregistered) attributes and Number Authority (IANA) will be the repository for such
enumerated attribute values. accepted registration proposals after review.
- by providing versioning and negotiation so as to enable Expires: May 16, 1999
future implementations of IPP to interoperate with * that do not require review and approval. IANA will be the
implementations of version 1.0 of IPP. repository for such registrations.
3.4. FIREWALLS - by providing syntax in the protocol so that implementers may add
private (i.e. unregistered) attributes and enumerated attribute
values.
As stated in the end-user wants and needs section, Internet - by providing versioning and negotiation so as to enable future
printing shall by definition support printing from one enterprise implementations of IPP to interoperate with implementations of
to another. As such, the Internet printing protocol must be version 1.0 of IPP.
capable of passing through firewalls and/or proxy servers (where
enabled by the firewall administrator) preferably without
modification to the existing firewall technology.
3.5. INTERNATIONALIZATION 4.4. FIREWALLS
Expires: Dec 30, 1998 As stated in section 3 Design Goals, Internet printing shall, by
Copyright(C) The Internet Society 1998. All Rights Reserved. definition, support printing from one enterprise to another. As such,
the Internet printing protocol must be capable of passing through
firewalls and/or proxy servers (where enabled by the firewall
administrator) preferably without modification to the existing firewall
technology.
Users of Internet printing will come from all over the world. As 4.5. INTERNATIONALIZATION
such, where appropriate, internationalization and localization
will be enabled for the protocol.
Expires: Dec 30, 1998 Users of Internet printing will come from all over the world. As such,
Copyright(C) The Internet Society 1998. All Rights Reserved. where appropriate, internationalization and localization will be enabled
for the protocol.
4. IPP SCENARIOS Expires: May 16, 1999
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 9.0 contains operation, such as submitting a print job. Section 11 contains several
several detailed flows for each scenario to provide additional detailed flows for each scenario to provide additional detail. The
detail. The examples should not be considered exhaustive, but examples should not be considered exhaustive, but illustrative of the
illustrative of the functions and features required in the functions and features required in the protocol. Flows are intended to
protocol. Flows are intended to be protocol neutral. It is not be protocol neutral. It is not assumed that all of the functions and
assumed that all of the functions and features described in these features described in these scenarios will necessarily be supported
scenarios will necessarily be supported directly by IPP or in directly by IPP or in version 1.0 of IPP.
version 1.0 of IPP.
See the IPP Model and Semantics document for details on
configurations of clients, servers and firewalls.
Expires: Dec 30, 1998 See the IPP Model and Semantics document for details on configurations
Copyright(C) The Internet Society 1998. All Rights Reserved. of clients, servers and firewalls.
4.1. PRINTER DISCOVERY Expires: May 16, 1999
5.1. PRINTER DISCOVERY
Client Directory Client Directory Service
Service Service Service
+----------------------------------------------------------- > +----------------------------------------------------------- >
give me information on printers with these characteristics give me information on printers with these characteristics
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Information on Printers matching these characteristics Information on Printers matching these characteristics
The objective of printer discovery is to locate printers that The objective of printer discovery is to locate printers that meet the
meet the client's wants and needs. The Directory Service should client's wants and needs. The Directory Service should provide enough
provide enough information for the client to make an initial information for the client to make an initial choice. The client may
choice. The client may have to connect to each individual Printer have to connect to each individual Printer offered to get more detail.
offered to get more detail. Not all information available from Not all information available from the Directory Service is obtained
the Directory Service is obtained using IPP; some information may using IPP; some information may be administratively provided.
be administratively provided.
The actual protocol used between client and Directory or Name The actual protocol used between client and Directory or Name Service is
Service is considered outside the scope of IPP. Printer Discover considered outside the scope of IPP. Printer Discover is included in the
is included in the scenarios to provide design goals for the scenarios to provide design goals for the directory schema for IPP
directory schema for IPP Printers and to further define Printer Printers and to further define Printer attributes.
attributes.
Characteristics that might be considered when locating a Printer Characteristics that might be considered when locating a Printer
include: include:
- capabilities of the Printer, e.g. PDLs supported - capabilities of the Printer, e.g. PDLs supported
- physical location, e.g. in building 010 - physical location, e.g. in building 010
- driver required and location - driver required and location
- cost per page to print (outside the scope of IPP) - cost per page to print (outside the scope of IPP)
- whether or not printer is access controlled - whether or not printer is access controlled
- whether or not usage requires client authentication - whether or not usage requires client authentication
- whether or not Printer can be authenticated - whether or not Printer can be authenticated
- whether or not payment is required for printing (outside the - whether or not payment is required for printing (outside the scope of
scope of IPP) IPP)
- maximum job size (spool size) (outside the scope of IPP) - maximum job size (spool size) (outside the scope of IPP)
- whether or not Printer support compression (outside the scope - whether or not Printer support compression (outside the scope of IPP)
of IPP)
- whether or not Printer supports encryption - whether or not Printer supports encryption
whether or not Printer support compression (outside the scope of IPP)
- administrative limits on this Printer - administrative limits on this Printer
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- maximum number of copies per job - maximum number of copies per job
- maximum number of pages per job - maximum number of pages per job
Responses could additionally include: Responses could additionally include:
- how to get more information - how to get more information
- web page - web page
- telephone number - telephone number
- help desk - help desk
4.2. DRIVER INSTALLATION Expires: May 16, 1999
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 Driver here refers to the code installed in some client operating system
system to generate the print data stream for the intended to generate the print data stream for the intended printer. The actual
printer. The actual details for installing a printer driver are details for installing a printer driver are operating system dependent
operating system dependent and are also outside the scope of IPP. and are also outside the scope of IPP. However, an IPP printer or a
However, an IPP printer or a directory service advertising an IPP directory service advertising an IPP Printer should be capable of
Printer should be capable of telling a client what drivers are telling a client what drivers are available and /or required, where they
available and /or required, where they can be found, and provide can be found, and provide pointers to installation instructions,
pointers to installation instructions, installation code or installation code or initialization strings required to install the
initialization strings required to install the driver. See driver. See section 4.1 (SECURITY CONSIDERATIONS) for security
section 3.1 (SECURITY CONSIDERATIONS) for security implications implications of driver download and installation.
of driver download and installation.
4.3. SUBMITTING A PRINT JOB 5.3. SUBMITTING A PRINT JOB
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Here is a Print Job Here is a Print Job
- Job attributes - Job attributes
- Print data - Print data
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Response Response
The protocol must support these sources of client data: The protocol must support these sources of client data:
- Print data is a file submitted with the job - Print data is a file submitted with the job
- Print data is generated on the fly by an application - Print data is generated on the fly by an application
- Print data is a file referenced by a URI - Print data is a file referenced by a URI
The protocol must handle overrun conditions in the printer and The protocol must handle overrun conditions in the printer and must
must support overlapped printing and downloading of the file in support overlapped printing and downloading of the file in devices that
devices that are unable to spool files before printing them. 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 success or failure of the request and provide information on failures
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)
4.4. 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
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- 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 - Job submission attributes supported/required
- scheduling attributes (e.g. priority) - scheduling attributes (e.g. priority)
- production attributes (e.g. number of copies) - production attributes (e.g. number of copies)
4.5. ASYNCHRONOUS NOTIFICATION Expires: May 16, 1999
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 Clients must be able to request asynchronous notification for Printer
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.
4.6. JOB CANCELING 5.6. JOB CANCELING
Client IPP Printer Client IPP Printer
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
+----------------------------------------------------------- > +----------------------------------------------------------- >
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 Similarly clients must be able to make changes to jobs which have been
been submitted and are queued for printing. Changing of job submitted and are queued for printing. Changing of job attributes
attributes should also be supported. Job modifications, holding should also be supported. Job modifications, holding and releasing of
and releasing of jobs are not included in the design goals for jobs are not included in the design goals for IPP v1.0.
IPP v1.0.
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
5. COPYRIGHT
Copyright(C) The Internet Society 1997. All Rights Reserved. Expires: May 16, 1999
6. SECURITY CONSIDERATIONS
This document and translations of it may be copied and furnished The security considerations for IPP are described in Section 4.1 above.
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 Expires: May 16, 1999
be revoked by the Internet Society or its successors or assigns. 7. COPYRIGHT
This document and the information contained herein is provided on Copyright(C) The Internet Society 1997. All Rights Reserved.
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: Dec 30, 1998 This document and translations of it may be copied and furnished to
Copyright(C) The Internet Society 1998. All Rights Reserved. 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.
6. REFERENCES The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
RFC1179 - Line Printer Daemon Protocol 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."
RFC1759 - Printer MIB Expires: May 16, 1999
8. REFERENCES
ISO/IEC 10175, Document Printing Application [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] [IPP-LPD]
Herriot, R., Hastings, T., Jacobs, N., Martin, J., Herriot, R., Hastings, T., Jacobs, N., Martin, J.,
"Mapping between LPD and IPP Protocols", "Mapping between LPD and IPP Protocols",
draft-ietf-ipp-lpd-ipp-map-04.txt, June 1998. draft-ietf-ipp-lpd-ipp-map-05.txt, November 1998.
[IPP-MOD] [IPP-MOD]
Isaacson, S., deBry, R., Hastings, T., Herriot, R., Powell, P., deBry, R., Hastings, T., Herriot, R., Isaacson, S., Powell,
"Internet Printing Protocol/1.0: Model and Semantics" P., "Internet Printing Protocol/1.0: Model and Semantics"
draft-ietf-ipp-mod-10.txt, June, 1998. draft-ietf-ipp-mod-11.txt, November, 1998.
[IPP-PRO] [IPP-PRO]
Herriot, R., Butler, S., Moore, P., Tuner, R., Herriot, R., Butler, S., Moore, P., Tuner, R.,
"Internet Printing Protocol/1.0: Encoding and Transport", "Internet Printing Protocol/1.0: Encoding and Transport",
draft-ietf-ipp-pro-06.txt, June, 1998. draft-ietf-ipp-pro-07.txt, November, 1998.
[IPP-RAT] [IPP-RAT]
Zilles, S., "Rationale for the Structure and Model and Protocol Zilles, S., "Rationale for the Structure and Model and Protocol
for the Internet Printing Protocol", for the Internet Printing Protocol",
draft-ietf-ipp-rat-03.txt, June, 1998. draft-ietf-ipp-rat-04.txt, November, 1998.
[IPP-REQ] [ISO10175]
(this document) ISO/IEC 10175, Document Printing Application, June 1996.
Expires: Dec 30, 1998 [RFC1179]
Copyright(C) The Internet Society 1998. All Rights Reserved. McLaughlin, L. III, (editor), "Line Printer Daemon Protocol"
RFC 1179, August 1990.
7. ACKNOWLEDGMENTS [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 This document draws heavily from preliminary work done by others
especially in the Printer Working Group (PWG). The author especially in the Printer Working Group (PWG). The author gratefully
gratefully acknowledges the specific contributions of: acknowledges the specific contributions of:
Scott Isaacson Roger Debry Scott Isaacson Roger deBry
Novell IBM Novell IBM
sisaacson@novell.com rdebry@us.ibm.com sisaacson@novell.com rdebry@us.ibm.com
Carl-Uno Manros Robert Herriot Carl-Uno Manros Robert Herriot
Xerox Sun Xerox Sun
manros@cp10.es.xerox.com Robert.Herriot@eng.sun.com manros@cp10.es.xerox.com Robert.Herriot@eng.sun.com
Tom Hastings Peter Zehler Tom Hastings Peter Zehler
Xerox Xerox Xerox Xerox
hastings@cp10.es.xerox.com Peter.Zehler@usa.xerox.com hastings@cp10.es.xerox.com Peter.Zehler@usa.xerox.com
8. AUTHOR'S ADDRESS 10. AUTHOR'S ADDRESS
F.D. (Don) Wright F.D. (Don) Wright
Lexmark International Lexmark International
C14/035-3 C14/035-3
740 New Circle Rd 740 New Circle Rd
Lexington, KY 40550 Lexington, KY 40550
Phone: 606-232-4808 Phone: 606-232-4808
Fax: 606-232-6740 Fax: 606-232-6740
E-mail: don@lexmark.com E-mail: don@lexmark.com
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved. 11. APPENDIX - DETAILED SCENARIOS
9. APPENDIX - DETAILED SCENARIOS
The following are more detailed scenarios illustrating how the The following are more detailed scenarios illustrating how the Internet
Internet Printing Protocol is expected to be used as a part of a Printing Protocol is expected to be used as a part of a complete
complete Internet Printing system. Some parts of the scenarios Internet Printing system. Some parts of the scenarios include concepts,
include concepts, functions and information that may be outside functions and information that may be outside of the scope of version
of the scope of version 1.0 of IPP (e.g. cost per page, payments 1.0 of IPP (e.g. cost per page, payments means available, etc.) The
means available, etc.) The information contained herein is meant information contained herein is meant to be generic. There may not be
to be generic. There may not be an exact wording or terminology an exact wording or terminology match between these scenarios and the
match between these scenarios and the implementation documents. implementation documents.
9.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE 11.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE
A user wants to find a color Postscript printer in his/her A user wants to find a color Postscript printer in his/her enterprise
enterprise which will print transparencies. The client, which will print transparencies. The client, directory service, and
directory service, and printer are all behind the same corporate printer are all behind the same corporate firewall. Because color foils
firewall. Because color foils are expensive, printers of this are expensive, printers of this type are access controlled and require
type are access controlled and require an account to be an account to be established so that printing can be billed back to the
established so that printing can be billed back to the using using department. Note the request to find a printer usable by Dept.
department. Note the request to find a printer usable by Dept. J15. Drivers for all supported printers are available from the server
J15. Drivers for all supported printers are available from the they are associated with. A help desk is provided for end user support.
server they are associated with. A help desk is provided for end The printer is unattended.
user support. The printer is unattended.
Client Directory Service Client Directory Service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a printer with these characteristics Find a printer with these characteristics
- prints color, prints transparencies - prints color, prints transparencies
- prints Postscript - prints Postscript
- is in building 003 - is in building 003
- accessible by the client - accessible by the client
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer "Color-A" Printer "Color-A"
- prints color, prints transparencies - prints color, prints transparencies
- prints Postscript - prints Postscript
- in room H-6, building 003 - in room H-6, building 003
- driver ABC-Postscript-V1.3 required, here is URI - driver ABC-Postscript-V1.3 required, here is URI
- cost is $.45 per page for color transparencies - cost is $.45 per page for color transparencies
- limit is 10 pages per job - limit is 10 pages per job
- authentication required to use printer - authentication required to use printer
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- printer is unattended - printer is unattended
- help desk at x5001 - help desk at x5001
Printer "Color-B" Printer "Color-B"
- prints color, prints transparencies - prints color, prints transparencies
- prints Postscript - prints Postscript
- in room J-10, building 003 - in room J-10, building 003
Expires: May 16, 1999
- driver XYZ-Postscript-V2.4 required, here is URI - driver XYZ-Postscript-V2.4 required, here is URI
- cost is $1.25 page for color transparencies - cost is $1.25 page for color transparencies
- limit is 5 pages per job - limit is 5 pages per job
- authentication is required to use printer - authentication is required to use printer
- printer is unattended - printer is unattended
- help desk at x5001 - help desk at x5001
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.2. PRINTER DISCOVERY ACROSS ENTERPRISES 11.2. PRINTER DISCOVERY ACROSS ENTERPRISES
A user in Company A wants to find a public printer in a business A user in Company A wants to find a public printer in a business
partner's enterprise (Company B) on which to print a purchase partner's enterprise (Company B) on which to print a purchase order. The
order. The client is behind one corporate firewall and the client is behind one corporate firewall and the directory service and
directory service and the printer are behind a different the printer are behind a different corporate firewall. Drivers for all
corporate firewall. Drivers for all supported printers are supported printers are available from the server they are associated
available from the server they are associated with. A web page is with. A web page is provided for end user support for public printers.
provided for end user support for public printers.
Client Company B Directory Service Client Company B Directory Service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a printer with these characteristics Find a printer with these characteristics
- prints black and white - prints black and white
- is in El Segundo, building A - is in El Segundo, building A
- is a public printer - is a public printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
skipping to change at page 29, line 5 skipping to change at page 27, line 5
- help available at http://xerox/elSegundo/publicPrinters - help available at http://xerox/elSegundo/publicPrinters
Printer "Public-B" Printer "Public-B"
- prints black and white - prints black and white
- prints PCL/5e - prints PCL/5e
- is in El Segundo, room J-10, building A - is in El Segundo, room J-10, building A
- driver XYZ-PCL-V2.4 required, here is URI - driver XYZ-PCL-V2.4 required, here is URI
- printer is public - printer is public
- help available at http://xerox/elSegundo/publicPrinters - help available at http://xerox/elSegundo/publicPrinters
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS 11.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS
A student wants to print a paper on a printer at his neighborhood A student wants to print a paper on a printer at his neighborhood Ink-
Ink-o's print shop. The report was written using Microsoft Word. o's print shop. The report was written using Microsoft Word. The student
The student is interested in the cost of printing since his is interested in the cost of printing since his budget is limited. Note
budget is limited. Note the use of logical operators to find this the use of logical operators to find this information.
information.
Client Ink-o's Directory Service Client Ink-o's Directory Service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a Printer with these characteristics Find a Printer with these characteristics
- prints color or black and white - prints color or black and white
- costs less than $.50 per page - costs less than $.50 per page
- tell me about resolution and marking technology - tell me about resolution and marking technology
< ----------------------------------------------------------+ < ----------------------------------------------------------+
skipping to change at page 30, line 5 skipping to change at page 28, line 5
Printer "Mono-B" Printer "Mono-B"
- prints black and white - prints black and white
- 300 dpi inkjet printer - 300 dpi inkjet printer
- prints Postscript - prints Postscript
- driver XYZ-Postscript-V2.4 required, here is URI - driver XYZ-Postscript-V2.4 required, here is URI
- cost is $0.35 page for black and white - cost is $0.35 page for black and white
- payment required prior to submitting print job - payment required prior to submitting print job
- here is URI for more information on Ink-o's - here is URI for more information on Ink-o's
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION 11.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION
An executive in her hotel room is finishing an important An executive in her hotel room is finishing an important presentation on
presentation on her laptop computer. She connects to a local her laptop computer. She connects to a local print shop through the web
print shop through the web to get a copy of her charts printed to get a copy of her charts printed for tomorrow's presentation. She
for tomorrow's presentation. She must find a print shop that is must find a print shop that is convenient to her hotel and can print
convenient to her hotel and can print color transparencies. She color transparencies. She wants to be sure that the printer can be
wants to be sure that the printer can be authenticated and can authenticated and can accept encrypted data.
accept encrypted data.
Client SirZippy Directory Service Client SirZippy Directory Service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a Printer with these characteristics Find a Printer with these characteristics
- prints color transparencies - prints color transparencies
- is in Boulder, Colorado - is in Boulder, Colorado
- Printer can be authenticated - Printer can be authenticated
- Printer supports encryption - Printer supports encryption
skipping to change at page 31, line 4 skipping to change at page 28, line 45
- Located at 1670 Pearl Street, Boulder, CO - Located at 1670 Pearl Street, Boulder, CO
- This Branch is open 24 hours a day - This Branch is open 24 hours a day
Printer "Color-B" Printer "Color-B"
- prints color transparencies - prints color transparencies
- prints Postscript - prints Postscript
- driver ABC-Postscript-V1.3 required, here is URI - driver ABC-Postscript-V1.3 required, here is URI
- payment required prior to submitting print job - payment required prior to submitting print job
- Printer can be authenticated - Printer can be authenticated
- Data can be encrypted - Data can be encrypted
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- Located at 1220 Arapahoe, Boulder, CO - Located at 1220 Arapahoe, Boulder, CO
- This Branch is open from 9:00am to 6:30pm - This Branch is open from 9:00 am to 6:30 pm
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.5. DRIVER DOWNLOAD 11.5. DRIVER DOWNLOAD
An end user in an enterprise wants to print a lengthy report on a An end user in an enterprise wants to print a lengthy report on a newly
newly installed high speed PostScript printer. Since she will installed high speed PostScript printer. Since she will likely use this
likely use this printer often, she would like to download a printer often, she would like to download a driver and install it on her
driver and install it on her workstation. She is running Windows workstation. She is running Windows 95. Note: Driver download is not a
95. Note: Driver download is not a V1.0 design goal. V1.0 design goal.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Tell me where to find print drivers for you Tell me where to find print drivers for you
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Driver install file is at Driver install file is at
http://www.ibm.com/drivers/NP12a/Win95 http://www.ibm.com/drivers/NP12a/Win95
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.6. SUBMITTING A PRINT JOB AS A FILE 11.6. SUBMITTING A PRINT JOB AS A FILE
An end-user wants to submit a print job. The print file already An end-user wants to submit a print job. The print file already exists
exists on his workstation. The client and printer are behind the on his workstation. The client and printer are behind the same corporate
same corporate firewall. The printer is available to anyone firewall. The printer is available to anyone behind the firewall and no
behind the firewall and no authorization or authentication is authorization or authentication is required. The data is pushed to the
required. The data is pushed to the printer. The printer is printer. The printer is capable of spooling the output. No errors occur.
capable of spooling the output. No errors occur.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
- 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
- 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
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS 11.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS
An end-user wants to submit a print job. The print file already An end-user wants to submit a print job. The print file already exists
exists on his workstation. The client and printer are behind the on his workstation. The client and printer are behind the same corporate
same corporate firewall. The printer is available to anyone firewall. The printer is available to anyone behind the firewall and no
behind the firewall and no authorization or authentication is authorization or authentication is required. The data is pushed to the
required. The data is pushed to the printer. The job consists of printer. The job consists of two separate documents. The printer is
two separate documents. The printer is capable of spooling the capable of spooling the output. No errors occur.
output. No errors occur.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
skipping to change at page 35, line 5 skipping to change at page 32, line 5
< ----------------------------------------------------------+ < ----------------------------------------------------------+
- OK - OK
+---------------------------------------------------------- > +---------------------------------------------------------- >
- here is the document to print, it is the last document. - here is the document to print, it is the last document.
< ----------------------------------------------------------+ < ----------------------------------------------------------+
- OK - OK
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS 11.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS
An end-user wants to submit a print job. The print file already An end-user wants to submit a print job. The print file already exists
exists on his workstation. The client and printer are behind the on his workstation. The client and printer are behind the same corporate
same corporate firewall. The printer is available to anyone firewall. The printer is available to anyone behind the firewall and no
behind the firewall and no authorization or authentication is authorization or authentication is required. The data is pushed to the
required. The data is pushed to the printer. The printer is not printer. The printer is not capable of spooling the output so it begins
capable of spooling the output so it begins printing while still printing while still receiving the file. An error occurs and the printer
receiving the file. An error occurs and the printer cannot cannot complete printing (in this case the user requires A4 paper and
complete printing (in this case the user requires A4 paper and
that paper size is not available on the printer.) that paper size is not available on the printer.)
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
skipping to change at page 35, line 40 skipping to change at page 32, line 38
- here is the document to print - here is the document to print
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job accepted Print job accepted
- printing failed - printing failed
- current state of print job = canceled (A4 not available) - current state of print job = canceled (A4 not available)
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = ready - printer state = ready
9.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND 11.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND PAYMENT
PAYMENT
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.
Expires: Dec 30, 1998 A traveling executive needs to print a set of transparencies for an
Copyright(C) The Internet Society 1998. All Rights Reserved. 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 Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Mutual authentication and exchange of secret keys Mutual authentication and exchange of secret keys
Expires: May 16, 1999
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job (encrypted) 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 (encrypted) 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 - payment required to proceed with job
- pick up at 230 East Main after 3:30pm today - pick up at 230 East Main after 3:30 pm today
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Payment transaction Payment transaction
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR 11.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR
A traveling executive needs to print a set of transparencies for A traveling executive needs to print a set of transparencies for an
an important business meeting. The charts are in Lotus Freelance important business meeting. The charts are in Lotus Freelance format on
format on his notebook computer. He has located a SirZippy print his notebook computer. He has located a SirZippy print shop near his
shop near his hotel that will print color transparencies. Because hotel that will print color transparencies. Because the information on
the information on the charts is sensitive, he wants to be sure the charts is sensitive, he wants to be sure that his data is sent to
that his data is sent to the printer in an encrypted format. He the printer in an encrypted format. He also wants to authenticate the
also wants to authenticate the printer. The printer also printer. The printer also authenticates the user. Payment occurs across
authenticates the user. Payment occurs across the Internet. An the Internet. An error occurs during decryption.
error occurs during decryption.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Mutual authentication and exchange of secret keys Mutual authentication and exchange of secret keys
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job (encrypted) Here is a print job (encrypted)
- job name = MyJob - job name = MyJob
skipping to change at page 37, line 44 skipping to change at page 34, line 42
- 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 (encrypted) 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 - payment required to proceed with job
- pick up at 230 East Main after 3:30pm today - pick up at 230 East Main after 3:30 pm today
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Payment transaction Payment transaction
. .
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
. .
. .
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Asynchronous response (email in this case) Asynchronous response (email in this case)
- decryption failed on job #12345 - decryption failed on job #12345
- no pages printed - no pages printed
- current state of job = aborted - current state of job = aborted
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION 11.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION
An end-user wants to submit a print job. The print file already An end-user wants to submit a print job. The print file already exists
exists on his workstation. The client and printer are behind the on his workstation. The client and printer are behind the same corporate
same corporate firewall. The printer is available to anyone firewall. The printer is available to anyone behind the firewall but
behind the firewall but authentication and authorization is authentication and authorization is required. Authorization takes place
required. Authorization takes place using the authenticated end- using the authenticated end-user's name. The data is pushed to the
user's name. The data is pushed to the printer. The printer is printer. The printer is capable of spooling the output.
capable of spooling the output.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Authentication Authentication
Note: An authentication failure would end the transaction at Note: An authentication failure would end the transaction at
this point. this point.
skipping to change at page 40, line 5 skipping to change at page 36, line 5
- 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
- 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
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY 11.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY
An end-user wants to submit a print job. The print data is An end-user wants to submit a print job. The print data is generated
generated dynamically and is being transmitted by a printer dynamically and is being transmitted by a printer driver on the client
driver on the client workstation as available. The client and workstation as available. The client and printer are behind the same
printer are behind the same corporate firewall. The printer is corporate firewall. The printer is available to anyone behind the
available to anyone behind the firewall and no authentication and firewall and no authentication and authorization is required. The data
authorization is required. The data is pushed to the printer. The is pushed to the printer. The printer is capable of spooling the output.
printer is capable of spooling the output. No error occurs. No error occurs.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
- document is in Postscript format - document is in Postscript format
- here is the print job - here is the print job
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print data accepted and spooling started Print data accepted and spooling started
- job id = #12345 - job id = #12345
- current job state = spooled - current job state = spooled
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = printing - printer state = printing
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED 11.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED
An end-user wants to submit a print job. The print data is An end-user wants to submit a print job. The print data is generated
generated dynamically and is being transmitted by a printer dynamically and is being transmitted by a printer driver on the client
driver on the client workstation as available. The client and workstation as available. The client and printer are behind the same
printer are behind the same corporate firewall. The printer is corporate firewall. The printer is available to anyone behind the
available to anyone behind the firewall and no authentication and firewall and no authentication and authorization is required. The data
authorization is required. The data is pushed to the printer. The is pushed to the printer. The printer is not capable of spooling the
printer is not capable of spooling the output. The printer jams output. The printer jams notifies the user and the user chooses to
notifies the user and the user chooses to cancel the job. cancel the job.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
- document is in Postscript format - document is in Postscript format
skipping to change at page 42, line 5 skipping to change at page 38, line 5
+---------------------------------------------------------- > +---------------------------------------------------------- >
- Cancel job #12345 - Cancel job #12345
* Printer flushes remaining data * Printer flushes remaining data
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job terminated Print job terminated
- current job state = canceled - current job state = canceled
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = jammed - printer state = jammed
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED 11.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED
An end-user wants to submit a print job. The print data is An end-user wants to submit a print job. The print data is generated
generated dynamically and is being transmitted by a printer dynamically and is being transmitted by a printer driver on the client
driver on the client workstation as available. The client and workstation as available. The client and printer are behind the same
printer are behind the same corporate firewall. The printer is corporate firewall. The printer is available to anyone behind the
available to anyone behind the firewall and no authentication and firewall and no authentication and authorization is required. The data
authorization is required. The data is pushed to the printer. The is pushed to the printer. The printer is not capable of spooling the
printer is not capable of spooling the output. The printer jams, output. The printer jams, notifies the user and the user clears the jam
notifies the user and the user clears the jam and elects to and elects to continue.
continue.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
skipping to change at page 43, line 5 skipping to change at page 39, line 5
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is the last part of the document to print Here is the last part of the document to print
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job received Print job received
- current job state = printing - current job state = printing
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = printing - printer state = printing
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.15. SUBMITTING A PRINT JOB WITH SERVER PULL 11.15. SUBMITTING A PRINT JOB WITH SERVER PULL
An end-user wants to submit a print job. The print data is in a An end-user wants to submit a print job. The print data is in a file and
file and is publicly available. It is pulled by the printer. The is publicly available. It is pulled by the printer. The client and
client and printer are behind the same corporate firewall. The printer are behind the same corporate firewall. The printer is available
printer is available to anyone behind the firewall and no to anyone behind the firewall and no authentication and authorization is
authentication and authorization is required. The printer is required. The printer is capable of spooling the output. Printing may
capable of spooling the output. Printing may start before the start before the entire job has been pulled.
entire job has been pulled.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
skipping to change at page 44, line 5 skipping to change at page 40, line 5
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here it is Here it is
Note: Failure to find the file, would end the transaction Note: Failure to find the file, would end the transaction
with an error at this point and an asynchronous with an error at this point and an asynchronous
notification would be send to the Client. notification would be send to the Client.
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Data received Data received
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES 11.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES
An end-user wants to submit a print job. Part of the print data An end-user wants to submit a print job. Part of the print data is on a
is on a file on the user's workstation. It is pushed by the file on the user's workstation. It is pushed by the client, but the
client, but the print job requires some resource not included in print job requires some resource not included in the print file. The
the print file. The client and printer are behind the same client and printer are behind the same corporate firewall. The printer
corporate firewall. The printer is available to anyone behind the is available to anyone behind the firewall and no authentication and
firewall and no authentication and authorization is required. The authorization is required. The printer is capable of spooling the
printer is capable of spooling the output. No errors occur. output. No errors occur.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- 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
skipping to change at page 45, line 5 skipping to change at page 41, line 5
< ----------------------------------------------------------+ < ----------------------------------------------------------+
- OK - OK
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Get the external resource Get the external resource
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here it is Here it is
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.17. GETTING CAPABILITIES 11.17. GETTING CAPABILITIES
9.17.1. Submission Attributes 11.17.1. Submission Attributes
An end-user wants to get the production and scheduling attributes An end-user wants to get the production and scheduling attributes that
that are supported or required when submitting jobs to this are supported or required when submitting jobs to this printer. The
printer. The client will use these attributes when forming the client will use these attributes when forming the subsequent print
subsequent print request. request.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
I'm going to submit a Postscript job I'm going to submit a Postscript job
give me your job submission attributes give me your job submission attributes
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Postscript production attributes for this Printer are: Postscript 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
9.17.2. Printer Capabilities 11.17.2. Printer Capabilities
An end-user wants to determine the resolution, marking An end-user wants to determine the resolution, marking technology, and
technology, and PDLs supported by the printer. PDLs supported by the printer.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Please tell me the Please tell me the
- resolution of the printer - resolution of the printer
- the marking technology of the printer - the marking technology of the printer
- PDLs supported - PDLs supported
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer resolution = 600 dpi Printer resolution = 600 dpi
Marking Technology = laser Marking Technology = laser
PDLS supported = Postscript level 2, PCL/6 PDLs supported = Postscript level 2, PCL/6
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.18. GETTING STATUS 11.18. GETTING STATUS
9.18.1. Printer State/Status 11.18.1. Printer State/Status
An end-user wants to determine the state or status of the An end-user wants to determine the state or status of the printer.
printer.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
What is the state of the printer? What is the state of the printer?
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer state = out-of-paper Printer state = out-of-paper
9.18.2. Job Status 11.18.2. Job Status
An end user wants to get the status of a job he has submitted. An end user wants to get the status of a job he has submitted.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Please tell me the status of job #12345 Please tell me the status of job #12345
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Job #12345 is queued Job #12345 is queued
it is number 3 in the queue it is number 3 in the queue
printer state = printing printer state = printing
9.18.3. Status of All My Jobs 11.18.3. Status of All My Jobs
An end user wants to get a list of all of the jobs he has An end user wants to get a list of all of the jobs he has submitted to
submitted to this Printer. this Printer.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Please tell me the status of my jobs Please tell me the status of my jobs
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Job #00012 is complete Job #00012 is complete
Printed at 12:35 on 01/23/97 Printed at 12:35 on 01/23/97
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
Job #09876 is printing Job #09876 is printing
Job #12345 is queued Job #12345 is queued
it is number 3 in the queue it is number 3 in the queue
Job #34567 is queued Job #34567 is queued
it is number 7 in the queue it is number 7 in the queue
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.19. ASYNCHRONOUS NOTIFICATION 11.19. ASYNCHRONOUS NOTIFICATION
9.19.1. Job Completion 11.19.1. Job Completion
An end-user wants to get notification of events that affect his An end-user wants to get notification of events that affect his print
print jobs. Print job completes without error. jobs. Print job completes without error.
Client IPP Printer Client IPP Printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job #123 completed Print job #123 completed
9.19.2. Job Complete with Data 11.19.2. Job Complete with Data
An end-user wants to get notification of events that affect his An end-user wants to get notification of events that affect his print
print jobs. Print job completes, users asked for all end of job jobs. Print job completes, users asked for all end of job information.
information.
Client IPP Printer Client IPP Printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job #123 completed Print job #123 completed
- total pages printed = 15 - total pages printed = 15
- number of copies printed = 3 - number of copies printed = 3
- total cost to print = $7.45 - total cost to print = $7.45
- pick up copies in room H-6, building 005 - pick up copies in room H-6, building 005
9.19.3. Print Job Fails 11.19.3. Print Job Fails
An end-user wants to get notification of events that affect his An end-user wants to get notification of events that affect his print
print jobs. Print job fails. Printer is unattended. jobs. Print job fails. Printer is unattended.
Client IPP Printer Client IPP Printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job #123 failed Print job #123 failed
- total pages printed = 15 - total pages printed = 15
- number of pages submitted = 25 - number of pages submitted = 25
- printer-state = jammed - printer-state = jammed
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.20. CANCEL A JOB 11.20. CANCEL A JOB
The end-user submits a print job and later decides to cancel it. The end-user submits a print job and later decides to cancel it.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Authentication. Authentication.
+---------------------------------------------------------- > +---------------------------------------------------------- >
Cancel job #1234 Cancel job #1234
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Job #1234 Canceled Job #1234 Canceled
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.21. END TO END SCENARIO - WITHIN AN ENTERPRISE 11.21. END TO END SCENARIO - WITHIN AN ENTERPRISE
An office worker prints on shared departmental printers. All An office worker prints on shared departmental printers. All printers in
printers in the office are public, that is, no authentication or the office are public, that is, no authentication or authorization is
authorization is required. Printers are protected from external required. Printers are protected from external access by a firewall. No
access by a firewall. No billing or accounting is required. Most billing or accounting is required. Most printing is done from desktop
printing is done from desktop applications. A help desk is applications. A help desk is provided for printing problems. Standard
provided for printing problems. Standard operating systems and operating systems and applications are used. Drivers are available, but
applications are used. Drivers are available, but are installed are installed manually by support personnel. This scenario assumes that
manually by support personnel. This scenario assumes that drivers drivers have been installed and that drivers are not IPP aware, that is,
have been installed and that drivers are not IPP aware, that is, they cannot communicate across an IPP connection to obtain status and
they cannot communicate across an IPP connection to obtain status capabilities. IPP printers appear in application pull-down menus.
and capabilities. IPP printers appear in application pull-down Printer configuration data is hard wired into the driver.
menus. Printer configuration data is hard wired into the driver.
End-user selects print from the application pull down menu. An End-user selects print from the application pull down menu. An IPP
IPP printer is selected from the list of Printers offered printer is selected from the list of Printers offered
The driver puts up a dialogue with hard-wired set of options The driver puts up a dialogue with hard-wired set of options
for this printer. The end-user makes choices and submits job. for this printer. The end-user makes choices and submits job.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job
- job-name = memo-to-boss - job-name = memo-to-boss
- 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 The driver generates the print data and passes it to the IPP driver a
driver a piece at a time as it is generated. piece at a time as it is generated.
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is the print data Here is the print data
< ----------------------------------------------------------+ < ----------------------------------------------------------+
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
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- current job state = spooled - current job state = spooled
Client adds this job to list of current jobs. List of jobs and Client adds this job to list of current jobs. List of jobs and state of
state of each is available on a pull-down menu on the client. 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 End-user selects job #1234 from list and clicks on it to see its status.
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: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.22. END TO END SCENARIO - ACROSS ENTERPRISES 11.22. END TO END SCENARIO - ACROSS ENTERPRISES
An office worker in Company A needs to print an office document An office worker in Company A needs to print an office document on a
on a "public" printer at Company B, a business partner. Both "public" printer at Company B, a business partner. Both companies have
companies have corporate firewalls so the print request must flow corporate firewalls so the print request must flow out of A's firewall
out of A's firewall and into B's firewall. The office worker can and into B's firewall. The office worker can look at public printers in
look at public printers in Company B's directory service. The Company B's directory service. The document is generated by a desktop
document is generated by a desktop application. Since the printer application. Since the printer is "public" no authentication or
is "public" no authentication or authorization is required. A authorization is required. A driver is downloaded. The driver is IPP
driver is downloaded. The driver is IPP aware, that is, it can aware, that is, it can communicate dynamically through the IPP protocol
communicate dynamically through the IPP protocol layer to obtain layer to obtain information about the printer.
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
skipping to change at page 53, line 5 skipping to change at page 47, line 48
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.
Expires: Dec 30, 1998 End-user selects print from the application pull down menu. "Public-A"
Copyright(C) The Internet Society 1998. All Rights Reserved. is selected from the list of Printers offered
End-user selects print from the application pull down menu.
"Public-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
skipping to change at page 53, line 45 skipping to change at page 48, line 35
+---------------------------------------------------------- > +---------------------------------------------------------- >
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 The driver generates the print data and passes it to the IPP driver a
driver a piece at a time. piece at a time.
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is the print data Here is the print data
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
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 Client adds this job to list of current jobs. List of jobs and state of
state of each is available on a pull-down menu on the client. 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 End-user selects job #1234 from list and clicks on it to see its status.
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: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
9.23. 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 An executive in her hotel room is finishing an important presentation on
presentation on her laptop computer. She connects to a local her laptop computer. She connects to a local print shop through the web
print shop through the web to get a copy of her charts printed to get a copy of her charts printed for tomorrow's presentation. She
for tomorrow's presentation. She must find a print shop that is must find a print shop that is convenient and can print color
convenient and can print color transparencies. She must download transparencies. She must download and temporarily install a driver in
and temporarily install a driver in order to generate the PDL order to generate the PDL required by the print shop. Mutual
required by the print shop. Mutual authentication is required by authentication is required by the print shop and payment must be made in
the printshop and payment must be made in advance. The job is advance. The job is encrypted on the wire to prevent eavesdropping.
encrypted on the wire to prevent eavesdropping.
End-user completes presentation. She goes to the web and connects End-user completes presentation. She goes to the web and connects
to the SirZippy home page. to the SirZippy home page.
Client SirZippy Directory Service Client SirZippy Directory Service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find me a printer with these characteristics Find me a printer with these characteristics
- Near Market Street in San Jose - Near Market Street in San Jose
- Prints color transparencies - Prints color transparencies
- drivers can be downloaded - drivers can be downloaded
- supports privacy (encryption) - supports privacy (encryption)
- -
Available Printers matching these characteristics are looked up Available Printers matching these characteristics are looked up in the
in the Directory Service Directory Service
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer "Color-A" Printer "Color-A"
- located at 123 First Street in San Jose - located at 123 First Street in San Jose
- URI is http://www.SirZippy.com/FirstStreet/Color-A - URI is http://www.SirZippy.com/FirstStreet/Color-A
- prints color transparencies - prints color transparencies
- 600 dpi laser - 600 dpi laser
- driver ABC-Postscript-V1.3 available at this URI - driver ABC-Postscript-V1.3 available at this URI
- cost = $.75 per page - cost = $.75 per page
- authentication required to use printer - authentication required to use printer
- payment required prior to printing - payment required prior to printing
Printer "Color-B" Printer "Color-B"
- located at 67 San Carlos Street, San Jose - located at 67 San Carlos Street, San Jose
- URI is http://www.SirZippy.com/SanCarlos/Color-B - URI is http://www.SirZippy.com/SanCarlos/Color-B
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- prints color transparencies - prints color transparencies
- 1200 dpi laser - 1200 dpi laser
- driver XYZ-Poscscript-V4.3 available at this URI - driver XYZ-PostScript-V4.3 available at this URI
- cost = $1.25 per page - cost = $1.25 per page
- authentication required to use printer - authentication required to use printer
- payment required prior to printing - payment required prior to printing
- -
Expires: May 16, 1999
- more information at this URI - more information at this URI
The user decides to use the first printer because it is closer. The user decides to use the first printer because it is closer. She
She connects to the URI given to get a driver. connects to the URI given to get a driver.
Client Driver URI Client Driver URI
+---------------------------------------------------------- > +---------------------------------------------------------- >
I need a driver for "Color-A" I need a driver for "Color-A"
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Driver installer is at http://www.xerox.com/prtdrvrs Driver installer is at http://www.xerox.com/prtdrvrs
Driver is installed Driver is installed
skipping to change at page 57, line 4 skipping to change at page 51, line 43
< ----------------------------------------------------------+ < ----------------------------------------------------------+
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
Expires: Dec 30, 1998
Copyright(C) The Internet Society 1998. All Rights Reserved.
- 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
Expires: May 16, 1999
- job-name = presentation - job-name = presentation
- notify me by email when job is complete - notify me by email when job is complete
- print on us-letter-transparency - print on us-letter-transparency
- print 1 copy - print 1 copy
- print at high quality - print at high quality
- print by 9:00 am tomorrow morning - print by 9:00 am tomorrow morning
- 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 The driver generates the print data and passes it to the IPP driver a
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
skipping to change at line 2118 skipping to change at line 1996
- current job state = held, waiting for payment - current job state = held, waiting for payment
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Payment transaction Payment transaction
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Job is scheduled to print, pick up after 9:00am tomorrow Job is scheduled to print, pick up after 9:00am tomorrow
Thank you for using SirZippy Thank you for using SirZippy
Expires: Dec 30, 1998 Expires: May 16, 1999
Copyright(C) The Internet Society 1998. All Rights Reserved.
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