draft-ietf-ipp-req-00.txt   draft-ietf-ipp-req-01.txt 
INTERNET DRAFT F.D. Wright, Lexmark International INTERNET DRAFT F.D. Wright, Lexmark International
<draft-ietf-ipp-req-00.txt> <draft-ietf-ipp-req-01.txt>
March 24, 1997 Expires: Sept 24, 1997 October 15, 1997 Expires: April 15, 1998
Requirements for an Internet Printing Protocol Requirements 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
documents of the Internet Engineering Task Force (IETF), its documents of the Internet Engineering Task Force (IETF), its
areas, and its working groups. Note that other groups may also areas, and its working groups. Note that other groups may also
distribute working documents as Internet-Drafts. distribute working documents as Internet-Drafts.
skipping to change at page 2, line ? skipping to change at page 1, line 41
describe all aspects of a new Internet Printing Protocol (IPP). describe all aspects of a new Internet Printing Protocol (IPP).
IPP is an application level protocol that can be used for IPP is an application level protocol that can be used for
distributed printing on the Internet. The protocol is heavily distributed printing on the Internet. The protocol is heavily
influenced by the printing model introduced in the Document influenced by the printing model introduced in the Document
Printing Application (ISO/IEC 10175 DPA) standard. Although DPA Printing Application (ISO/IEC 10175 DPA) standard. Although DPA
identifies the both end user and administrative features, IPP is identifies the both end user and administrative features, IPP is
initially focused only on the end user functionality. initially focused only on the end user functionality.
The full set of IPP documents include: The full set of IPP documents include:
Internet Printing Protocol/1.0: Requirements Requirements for an Internet Printing Protocol
Internet Printing Protocol/1.0: Model and Semantics Internet Printing Protocol/1.0: Model and Semantics
Internet Printing Protocol/1.0: Security
Internet Printing Protocol/1.0: Protocol Specification Internet Printing Protocol/1.0: Protocol Specification
Internet Printing Protocol/1.0: Directory Schema Rationale for the Structure and Model and Protocol for the
Internet Printing Protocol
Wright draft-ietf-ipp-req-00.txt [Page 1] Copyright(C) The Internet Society 1997. All Rights Reserved.
This document describes the requirements for an Internet printing This document describes the requirements for an Internet printing
protocol. It describes the end-user, operator and administrator protocol. It describes the end-user, operator and administrator
wants and needs in the context of printing documents from a wants and needs in the context of printing documents from a
variety of sources. These sources include standard desktop variety of sources. These sources include standard desktop
applications (e.g. word processors, spreadsheets, and browsers), applications (e.g. word processors, spreadsheets, and browsers),
documents selected by reference (e.g. URL) and documents created documents selected by reference (e.g. URI) and documents created
by batch or background applications. Additionally, requirements by batch or background applications. Additionally, requirements
for light-weight printer status and management and job status and for light-weight printer status and management and job status and
management services will be discussed. management services will be discussed.
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
TABLE OF CONTENTS TABLE OF CONTENTS
1. TERMINOLOGY..................................................5 1. TERMINOLOGY..................................................5
2. REQUIREMENTS.................................................6 2. REQUIREMENTS.................................................7
2.1. END-USER.................................................6 2.1. END-USER .................................................7
2.1.1. Finding or locating a printer........................6 2.1.1. Finding or locating a printer. .......................7
2.1.2. Create an instance of the printer....................7 2.1.2. Create an instance of the printer. ...................8
2.1.3. Viewing the status of a printer......................7 2.1.3. Viewing the status and capabilities of a printer. ....8
2.1.4. Submitting a print job...............................8 2.1.4. Submitting a print job. ..............................9
2.1.5. Viewing the status of a submitted print job..........9 2.1.5. Viewing the status of a submitted print job. ........10
2.1.6. Canceling a Print Job................................9 2.1.6. Canceling a Print Job ...............................10
2.2. OPERATOR.................................................9 2.2. OPERATOR ................................................11
2.2.1. Alerting............................................10 2.2.1. Alerting. ...........................................11
2.2.2. Changing Print and Job Status.......................10 2.2.2. Changing Print and Job Status. ......................11
2.3. ADMINISTRATOR...........................................10 2.3. ADMINISTRATOR ...........................................11
3. IPP SCENARIOS...............................................12 3. IPP SCENARIOS...............................................16
3.1. PRINTER DISCOVERY.......................................13 3.1. PRINTER DISCOVERY .......................................17
3.2. DRIVER INSTALLATION.....................................14 3.2. DRIVER INSTALLATION .....................................18
3.3. SUBMITTING A PRINT JOB..................................14 3.3. SUBMITTING A PRINT JOB ..................................18
3.4. GETTING STATUS/CAPABILITIES.............................15 3.4. GETTING STATUS/CAPABILITIES .............................19
3.5. ASYNCHRONOUS NOTIFICATION...............................16 3.5. ASYNCHRONOUS NOTIFICATION ...............................20
3.6. JOB CANCELING...........................................16 3.6. JOB CANCELING ...........................................20
4. OBJECTIVES OF THE PROTOCOL..................................18 4. OBJECTIVES OF THE PROTOCOL..................................13
4.1. SECURITY................................................18 4.1. SECURITY ................................................13
4.2. INTERACTION WITH LPD (RFC1179)..........................18 4.2. INTERACTION WITH LPD (RFC1179) ..........................14
4.3. EXTENSIBILITY...........................................19 4.3. EXTENSIBILITY ...........................................14
4.4. FIREWALLS...............................................19 4.4. FIREWALLS ...............................................15
4.5. INTERNATIONALIZATION....................................20 4.5. INTERNATIONALIZATION ....................................15
5. REFERENCES..................................................21 5. REFERENCES..................................................22
6. ACKNOWLEDGMENTS.............................................21 6. ACKNOWLEDGMENTS.............................................23
7. AUTHOR'S ADDRESS............................................21 7. AUTHOR'S ADDRESS............................................23
8. APPENDIX - DETAILED SCENARIOS...............................22 8. APPENDIX - DETAILED SCENARIOS...............................24
8.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE..................22 8.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE ..................24
8.2. PRINTER DISCOVERY ACROSS ENTERPRISES....................24 8.2. PRINTER DISCOVERY ACROSS ENTERPRISES ....................26
8.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS...25 8.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS ...27
8.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION......26 8.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION ......28
8.5. DRIVER DOWNLOAD.........................................28 8.5. DRIVER DOWNLOAD .........................................30
8.6. SUBMITTING A PRINT JOB AS A FILE........................29 8.6. SUBMITTING A PRINT JOB AS A FILE ........................31
8.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS...............30 8.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS ...............32
8.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS........31 8.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS ........33
8.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND 8.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND
PAYMENT......................................................32 PAYMENT ......................................................34
8.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR...........33 8.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR ...........35
8.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION.............35 8.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION .............37
8.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY...........36 8.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY ...........38
Expires: Sept 24, 1997 Expires: April 15, 1998
8.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED...37 Copyright(C) The Internet Society 1997. All Rights Reserved.
8.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED..38 8.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED ...39
8.15. SUBMITTING A PRINT JOB WITH SERVER PULL................39 8.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED ..40
8.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES.......40 8.15. SUBMITTING A PRINT JOB WITH SERVER PULL ................41
8.17. GETTING CAPABILITIES...................................41 8.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES .......42
8.17.1. Submission Attributes..............................41 8.17. GETTING CAPABILITIES ...................................43
8.17.2. Printer Capabilities...............................41 8.17.1. Submission Attributes ..............................43
8.18. GETTING STATUS.........................................42 8.17.2. Printer Capabilities ...............................43
8.18.1. Printer State/Status...............................42 8.18. GETTING STATUS .........................................44
8.18.2. Job Status.........................................42 8.18.1. Printer State/Status ...............................44
8.18.3. Status of All My Jobs..............................42 8.18.2. Job Status .........................................44
8.19. ASYNCHRONOUS NOTIFICATION..............................44 8.18.3. Status of All My Jobs ..............................44
8.19.1. Job Completion.....................................44 8.19. ASYNCHRONOUS NOTIFICATION ..............................46
8.19.2. Job Complete with Data.............................44 8.19.1. Job Completion .....................................46
8.19.3. Print Job Fails....................................44 8.19.2. Job Complete with Data .............................46
8.20. CANCEL A JOB...........................................45 8.19.3. Print Job Fails ....................................46
8.21. END TO END SCENARIO - WITHIN AN ENTERPRISE.............46 8.20. CANCEL A JOB ...........................................47
8.22. END TO END SCENARIO - ACROSS ENTERPRISES...............48 8.21. END TO END SCENARIO - WITHIN AN ENTERPRISE .............48
8.23. END TO END SCENARIO - ON THE INTERNET..................51 8.22. END TO END SCENARIO - ACROSS ENTERPRISES ...............50
8.23. END TO END SCENARIO - ON THE INTERNET ..................53
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
1. TERMINOLOGY 1. TERMINOLOGY
Internet Printing for the purposes of this document is the Internet Printing for the purposes of this document is the
application of World Wide Web tools, programs, servers and application of Internet tools, programs, servers and networks to
networks to allow end-users to print to a remote printer using, allow end-users to print to a remote printer using, after initial
after initial setup or configuration, the same methods, setup or configuration, the same methods, operations and
operations and paradigms as would be used for a locally attached paradigms as would be used for a locally attached or a local area
or a local area network attached printer. This could include the network attached printer. This could include the use of HTTP
use of HTTP servers and browsers for providing static, dynamic servers and browsers and other applications for providing static,
and interactive printer locating services, user installation, dynamic and interactive printer locating services, user
selection, configuration, print job submission, printer installation, selection, configuration, print job submission,
capability inquiry and status inquiry of remote printers and printer capability inquiry and status inquiry of remote printers
jobs. and jobs.
For the purposes of this document, a WEB Browser is software For the purposes of this document, a WEB Browser is software
available from a number of sources including but not limited to available from a number of sources including but not limited to
the following: Microsoft Internet Explorer, NCSA Mosaic, Netscape the following: Microsoft Internet Explorer, NCSA Mosaic, Netscape
Navigator, Sun Hot Java!. The major task of these products is to Navigator, Sun Hot Java!. The major task of these products is to
use the Hypertext Transport Protocol (HTTP) to retrieve, use the Hypertext Transport Protocol (HTTP) to retrieve,
interpret and display Hypertext Markup Language (HTML). interpret and display Hypertext Markup Language (HTML). These
products are a part of a complete Internet Printing system but
may not be present in all implementations.
Throughout this document, 'printer' shall be interpreted to Throughout this document, 'printer' shall be interpreted to
include any device which is capable of marking on a piece of include any device which is capable of marking on a piece of
media using any available technology. No assumption is made media using any available technology. No requirement is made
about multi-tiered printing solutions involving servers (single for multi-tiered printing solutions involving servers (single or
or multiple) logically in front of the actual printing device and multiple) logically in front of the actual printing device yet
all such configurations shall be supported but shall appear to all such configurations shall be supported but shall appear to
the end-user as only a single device. the end-user as only a single device.
The IPP protocol will support the following physical
configurations:
- 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,
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
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 requirements will be identified Throughout this document, certain requirements will be identified
as not being a part of version 1.0 (or V1.0) of the protocol or as not being a part of version 1.0 (or V1.0) of the protocol or
as being satisfied by means outside of IPP. For example printer as being satisfied by means outside of IPP. IPP is assumed to be
instance creation is not performed by but is enabled by the one part, an enabler, of a complete Internet Printing solution.
protocol. Globally, none of the operator or administrators For example printer instance creation is not performed by but is
requirements will be included in version 1.0. Some of the end- enabled by the protocol. Globally, none of the operator or
user requirements may also be excluded from version 1.0 and will administrators requirements will be included in version 1.0.
be so noted in the description of that requirement. Subsequent Some of the end-user requirements may also be excluded from
versions of the protocol (e.g. V2.0) may include support for version 1.0 and will be so noted in the description of that
these initially excluded requirements. requirement. Subsequent versions of the protocol (e.g. V2.0) may
include support for these initially excluded requirements.
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
2. REQUIREMENTS 2. REQUIREMENTS
The next three sections identify the requirements of an Internet The next three sections identify the requirements of 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 requirements defined here are operator, and administrator. The requirements defined here are
only those that need to be addressed by an application level only those that need to be addressed by an Internet printing
Internet printing protocol. Other requirements, such as that the protocol. Other requirements, such as that the operator needs
operator needs physical access to the printer (e.g. to be able to physical access to the printer (e.g. to be able to load paper or
load paper or clear jams) are not covered by this document. clear jams) are not covered by this document. Section 4 contains
Section 3 contains scenarios which provide more detailed examples scenarios which provide more detailed examples of the entire
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 2.1. 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 the roles in which humans act. The end-user is the person one of the roles in which humans act. The end-user is the person
that will submit a job to be printed on the printer. that will submit a job to be printed on the printer.
The requirements of the end-user are broken down into six The requirements of the end-user are broken down into six
categories: finding/locating, local instance, viewing printer categories: finding/locating a printer, creating a local instance
status, viewing printer capabilities, submitting a print job, of a printer, viewing printer status, viewing printer
viewing job status, altering the attributes of a print job. capabilities, submitting a print job, viewing print job status,
altering the attributes of a print job.
2.1.1. Finding or locating a printer. 2.1.1. 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 authorized to print. They want to be able to perform they are authorized to print. They want to be able to perform
this function using a standard WEB browser or other application. this function using a standard WEB browser or other application.
Multiple criteria can be applied to find the printers needed. Multiple criteria can be applied to find the printers needed.
These criteria include but are not limited to: These criteria include but 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, end-users want to be able to limit the scope of Additionally, while it is outside of scope of IPP, end-users want
their searching to: to be 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: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
While an Internet printing protocol may not of itself include
this function, IPP must define and enable a directory schema
which will provide the necessary information for a directory
service implementation to consistently represent printers by
their IPP attributes.
2.1.2. Create an instance of the printer. 2.1.2. Create an instance of the printer.
After finding the desired printer, an end-user needs to be able After finding the desired printer, an end-user needs to be able
to create a local instance of that printer within the end-user to create a local instance of that printer within the end-user
operating system or desktop. This local instance will vary operating system or desktop. This local instance will vary
depending upon the printing paradigm of the operating system. depending upon the printing paradigm of the operating system.
For example, some UNIX users will only want a queue or a For example, some UNIX users will only want a queue or a
reference to a remote printer created on their machine while reference to a remote printer created on their machine while
other UNIX users and Windows NT users will want the queue and other UNIX users and Windows NT users will want the queue and
also the necessary icons and registry entries to be created and also the necessary icons and registry entries to be created and
initialized. Where required, drivers may need to be downloaded initialized. Where required, drivers may need to be downloaded
from some repository and installed on the computer. All from some repository and installed on the computer. All
necessary decompressing, unpacking, and other installation necessary decompressing, unpacking, and other installation
actions should occur without end-user interaction or intervention actions should occur without end-user interaction or intervention
excepting initial approval by the end-user. Once the local excepting initial approval by the end-user. Once the local
instance of the printer has been installed, it shall appear to instance of the printer has been installed, it shall appear to
the end-user of operating system and to the applications running the end-user of operating system and to the applications running
there as any other printer (local, local area network connected, there as any other printer (local, local area network connected,
or network operating system connected) on the end-user desktop or or network operating system connected) on the end-user desktop or
environment. An Internet Printing Protocol's role in this environment. An IPP's role in this requirement is simply to
requirement is to enable (by providing configuration information, enable the creation of the printer instance providing
driver location, etc.) the creation of the printer instance information such as where to locate a printer driver for this
rather than the actual creation of the printer instance. printer, as an attribute of an IPP Printer.
2.1.3. Viewing the status and capabilities of a printer. 2.1.3. 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 needs the ability to verify the characteristics and status user needs the ability to verify the characteristics and status
of both printers and jobs queued for that printer. When checking of both printers and jobs queued for that printer. When checking
the characteristics of a printer, the end-user typically wants to the characteristics of a printer, the end-user typically wants to
be able to determine the capability of the device, e.g.: be able to determine the capability of the device, e.g.:
- loaded 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, the end-user typically Expires: April 15, 1998
wants to be able to determine: Copyright(C) The Internet Society 1997. All Rights Reserved.
When checking the status of the printer and its print jobs, the
end-user typically wants to be able to determine:
- is the printer on-line? - is the printer on-line?
- what are the defaults to be used for printing? - what are the defaults to be used for printing?
Expires: Sept 24, 1997
When checking the status on jobs queued for the printer, the end-
user typically wants to be able to determine:
- how many jobs are queued for the printer? - how many jobs are queued for the printer?
- how are job priorities assigned? - how are job priorities assigned? (outside the scope of IPP)
2.1.4. Submitting a print job. 2.1.4. 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 wants to print to that printer from normal applications user wants to print to that printer from normal applications
using standard methods. These normal applications include such using standard methods. These normal applications include such
programs as word processors, spreadsheets, data-base programs as word processors, spreadsheets, data-base
applications, WEB browsers, production printing applications, applications, WEB browsers, production printing applications,
etc. In addition to printing from an application, the end-user etc. Additionaly, the end-user may want to print a file already
needs to have the ability to submit a print job by reference. existing on the end-user's computer -- "simple push." In
Printing by reference is defined to mean as submitting a job by addition to printing from an application and simple push, the
providing a reference to an existing document. The reference, a end-user needs to have the ability to submit a print job by
URL, will be resolved before the actual print process occurs. 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.
Some means shall be provided to determine if the format of a job 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 matches the capability of the printer. This can be done by one
of the following: 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 match the capabilities of the printer. not match the capabilities of the printer.
Because the end-user does not want to know the details of the Because the end-user does not want to know the details of the
underlying printing process, the protocol must support job-to- underlying printing process, the protocol must support job-to-
printer capability matching (all implementations are not printer capability matching (all implementations are not
necessarily required to implement this function.) This matching necessarily required to implement this function.) This matching
capability requires knowing both the printer's capabilities and capability requires knowing both the printer's capabilities and
attributes and those capabilities and attributes required by the attributes and those capabilities and attributes required by the
job. Actions taken when a print job requires capabilities or job. Actions taken when a print job requires capabilities or
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
attributes that are not available on the printer vary and can attributes that are not available on the printer vary and can
include but are not limited to: include but are not limited to:
- rejecting the print job - rejecting the print job
- redirecting the print job to another printer - redirecting the print job to another printer (Not in V1.0)
Expires: Sept 24, 1997
- 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 without human intervention. Any application level applications without human intervention.
Internet printing application must support this type of printing.
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 time the job is submitted. These parameters include but are the time the job is submitted. These parameters include but are
not limited to: not limited 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. 2.1.5. Viewing the status of a submitted print job.
After a job has been submitted to a printer, the end-user needs a 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 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 printing, job done) and to determine where the job is in the
print queue. print queue.
In addition to the need to inquire about the status of a print In addition to the need to inquire about the status of a print
job, automatic notification of the completion of that job is also job, automatic notification of the completion of that job is also
required. New notification means are not defined by the protocol required. Notification means are not defined by the protocol but
but the protocol must provide a means of enabling and disabling the protocol must provide a means of enabling and disabling the
the notification. notification.
2.1.6. Canceling a Print Job 2.1.6. Canceling a Print Job
While a job is waiting to be printing or has been started but not While a job is waiting to be printing or has been started but not
yet completed, the original creator/submitter of the print job yet completed, the original creator/submitter of the print job
(i.e. the end-user) shall be able to cancel the job entirely (job (i.e. the end-user) shall be able to cancel the job entirely (job
is waiting) or the remaining portion of it (job is printing.) is waiting) or the remaining portion of it (job is printing.)
Altering the print job itself is not a V1.0 requirement. Altering the print job itself is not a V1.0 requirement.
2.2. OPERATOR Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
2.2. OPERATOR (NOT REQUIRED FOR V1.0)
Expires: Sept 24, 1997
An operator of a printer accepting jobs through the Internet is An operator of a printer accepting jobs through the Internet is
one of the roles in which humans act. The operator has the one of the roles in which humans act. The operator has the
responsibility of monitoring the status of the printer as well as responsibility of monitoring the status of the printer as well as
managing and controlling the jobs at the device. These managing and controlling the jobs at the device. These
responsibilities include but are not limited to the replenishing responsibilities include but are not limited to the replenishing
of supplies (ink, toner, paper, etc.), the clearing of minor of supplies (ink, toner, paper, etc.), the clearing of minor
errors (paper jams, etc.) and the re-prioritization of end-user errors (paper jams, etc.) and the re-prioritization of end-user
jobs. Operator requirements will not be addressed by V1.0 of the jobs. Operator requirements will not be addressed by V1.0 of the
protocol. protocol.
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operator may be able to view all print jobs on a printer while operator may be able to view all print jobs on a printer while
the end-user may only see his own jobs. the end-user may only see his own jobs.
2.2.1. Alerting. 2.2.1. Alerting.
One of the required operator functions is having the ability to One of the required operator functions is having the ability to
discover or to be alerted to changes in the status of a printer discover or to be alerted to changes in the status of a printer
particularly those changes that cause a printer to stop printing particularly those changes that cause a printer to stop printing
and to be able to correct those problems. As such, an Internet and to be able to correct those problems. As such, an Internet
printing protocol shall be able to alert a designated operator or printing protocol shall be able to alert a designated operator or
operators to these conditions such as ‘out of paper’, ‘out of operators to these conditions such as 'out of paper', 'out of
ink’, etc. Additionally. the operator shall be able to, ink', etc. Additionally. the operator shall be able to,
asynchronous to other printer activity, inquire as to a printer's asynchronous to other printer activity, inquire as to a printer's
or a job's status. or a job's status.
2.2.2. Changing Print and Job Status. 2.2.2. Changing Print and Job Status.
Another of the required operator functions is the ability to Another of the required operator functions is the ability to
affect changes to printer and job status remotely. For example, affect changes to printer and job status remotely. For example,
the operator will need to be able to re-prioritize or cancel any the operator will need to be able to re-prioritize or cancel any
print jobs on a printer to which the operator has authority. print jobs on a printer to which the operator has authority.
2.3. ADMINISTRATOR 2.3. ADMINISTRATOR (NOT REQUIRED FOR V1.0)
An administrator of a printer accepting jobs through the Internet An administrator of a printer accepting jobs through the Internet
is one of the roles in which humans act. The administrator has is one of the roles in which humans act. The administrator has
the responsibility of creating the printer instances and the responsibility of creating the printer instances and
controlling the authorization of other controlling the authorization of other end-users and operators.
Expires: Sept 24, 1997 Expires: April 15, 1998
end-users and operators. Administrator requirements will not be Copyright(C) The Internet Society 1997. All Rights Reserved.
addressed by V1.0 of the protocol. Administrator requirements will not be addressed by V1.0 of the
protocol.
The requirements of the administrator include all those of the The requirements of the administrator include all those of the
end-user and, in some environments, some or all of those of the end-user and, in some environments, some or all of those of the
operator. Minimally, the administrator must also have the tools, operator. Minimally, the administrator must also have the tools,
programs, utilities and supporting protocols available to be able programs, utilities and supporting protocols available to be able
to: 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
skipping to change at page 12, line 5 skipping to change at page 13, line 5
which the status capabilities and other information about which the status capabilities and other information about
printers and jobs are presented printers 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 tasks locally or remotely to the printer. above tasks locally or remotely to the printer.
Expires: Sept 24, 1997 Expires: April 15, 1998
3. IPP SCENARIOS Copyright(C) The Internet Society 1997. All Rights Reserved.
3. OBJECTIVES OF THE PROTOCOL
The protocol to be defined by an Internet printing working group
will address the requirements of the end-user (V1.0). It will
not, at least initially, address the operator or administrator
requirements (V2.0).
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.
In many environments such as Windows 95, Windows NT and OS/2, the
print data is created and transmitted to the printer on the fly
rather than being created, spooled and then transmitted to the
printer (a typical UNIX method.) The Internet Printing Protocol
must properly handle this methodology and make this transparent
to the end-user.
3.1. SECURITY
It is required that the Internet Printing Protocol be able to
operate within a secure environment. Wherever possible, IPP ought
to make use of existing security protocols and services. IPP will
not invent new security features when the requirements described
in this document can be met by existing protocols and services.
Examples of such services include Transport Layer Security (TLS)
and HTTP Digest Authentication.
Since we cannot anticipate the security levels or the specific
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
describes in this document take into account that the client, the
Printer, and the document to be printed may all exist in
different security domains. When objects are in different
security domains the requirements for authentication and message
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
protection are much stronger than when they are all in the same
domain.
Secondly, the sensitivity and value of the content being printed
will vary from one instance of a print job to another. For
example, a publicly available document does not need the same
level of protection as a payroll document does. Message
protection requirements include data origin authentication,
privacy, integrity, and non-repudiation.
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 requirements 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.
3.3. EXTENSIBILITY
The Internet Printing Protocol shall be extensible by several
means that facilitates interoperability and prevents
implementation collisions:
- by providing a process whereby implementers can submit
proposals for registration of new attributes and new
enumerated values for existing attributes.
- that require review and approval. The Internet Assigned
Number Authority (IANA) will be the repository for such
accepted registration proposals after review.
- that do not require review and approval. IANA will be the
repository for such registrations.
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
- by providing syntax in the protocol so that implementers
may add private (i.e. unregistered) attributesand
enumerated attribute values.
- by providing versioning and negotiation so as to enable
future implementations of IPP to interoperate with
implementations of version 1.0 of IPP.
3.4. FIREWALLS
As stated in the end-user requirements section, Internet printing
shall by 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.
3.5. INTERNATIONALIZATION
Users of Internet printing will come from all over the world. As
such, where appropriate, internationalization and localization
will be enabled for the protocol.
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
4. 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 8.0 contains operation, such as submitting a print job. Section 9.0 contains
several detailed flows for each scenario to provide additional several detailed flows for each scenario to provide additional
detail. The examples should not be considered exhaustive, but detail. The examples should not be considered exhaustive, but
illustrative of the functions and features required in the illustrative of the functions and features required in the
protocol. Flows are intended to be protocol neutral. It is not protocol. Flows are intended to be protocol neutral. It is not
assumed that all of the functions and features described in these assumed that all of the functions and features described in these
scenarios will necessarily be supported directly by IPP or in scenarios will necessarily be supported directly by IPP or in
version 1.0 of IPP. version 1.0 of IPP.
These scenarios support one of three physical configurations: See the IPP Model and Semantics document for details on
configurations of clients, servers and firewalls.
- 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.
Clients and Printers may or may not be behind firewalls, i.e. not
directly on the Internet. At least the following should be
considered:
- Client and Printer are behind the same firewall.
- Client is behind one firewall and Printer is behind another.
- Client is behind a firewall and Printer is not.
- Printer is behind a firewall and the client is not.
- Neither Client nor Printer are behind a firewall.
See draft-ietf-ipp-security-01.txt for more details on these and
other configurations of clients, servers and firewalls.
Expires: Sept 24, 1997 Expires: April 15, 1998
3.1. PRINTER DISCOVERY Copyright(C) The Internet Society 1997. All Rights Reserved.
4.1. 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 client’s requirements. The directory Service should meet the client's requirements. The Directory Service should
provide enough information for the client to make an initial provide enough information for the client to make an initial
choice. The client may have to connect to each individual Printer choice. The client may have to connect to each individual Printer
offered to get more detail. offered to get more detail. Not all information available from
the Directory Service is obtained using IPP; some information may
be administratively provided.
The actual protocol used between client and Directory or Name The actual protocol used between client and Directory or Name
service is considered outside the scope of IPP. Printer Discover Service is considered outside the scope of IPP. Printer Discover
is included in the scenarios to provide requirements for the is included in the scenarios to provide requirements for the
directory schema for IPP Printers and to further define Printer directory schema for IPP 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 - 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 - whether or not payment is required for printing (outside the
- maximum job size (spool size) scope of IPP)
- whether or not Printer support compression - maximum job size (spool size) (outside the scope of IPP)
- whether or not Printer support compression (outside the scope
of IPP)
- whether or not Printer supports encryption - whether or not Printer supports encryption
- administrative limits on this Printer - administrative limits on this Printer
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. 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
Expires: Sept 24, 1997
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
3.2. DRIVER INSTALLATION 4.2. 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?
< -----------------------------------------------------------+ < -----------------------------------------------------------+
URLs for drivers and install software URIs for drivers and install software
Driver here refers to the code installed in the client operating Driver here refers to the code installed in the client operating
system to generate the print data stream for the intended system to generate the print data stream for the intended
printer. The actual details for installing a printer driver are printer. The actual details for installing a printer driver are
operating system independent and are beyond the scope of IPP. operating system independent and are beyond the scope of IPP.
However, an IPP printer or a directory service advertising an IPP However, an IPP printer or a directory service advertising an IPP
Printer should be capable of telling a client what drivers are Printer should be capable of telling a client what drivers are
required, where they can be found, and provide pointers to required, where they can be found, and provide pointers to
installation instructions, installation code or initialization installation instructions, installation code or initialization
strings required to install the driver. strings required to install the driver.
3.3. SUBMITTING A PRINT JOB 4.3. SUBMITTING A PRINT JOB
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Here is a Print Job Here is a Print Job
- Job and document attributes - Job attributes
- Print data - Print data
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
Response Response
Expires: Sept 24, 1997
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 URL - 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 support overlapped printing and downloading of the file in must support overlapped printing and downloading of the file in
devices that are unable to spool files before printing them. devices that are unable to spool files before printing them.
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 when they occur. Responses would include things like: failures 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)
3.4. GETTING STATUS/CAPABILITIES 4.4. GETTING STATUS/CAPABILITIES
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Get status and/or capabilities of Printer Get status and/or capabilities of Printer
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Status/Capabilities Status/Capabilities
Clients will need to get information about Clients will need to get information about
- Static capabilities of the device (e.g. marking technology) - 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
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
- 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)
3.5. ASYNCHRONOUS NOTIFICATION 4.5. 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
. .
. .
. .
< -----------------------------------------------------------+ < -----------------------------------------------------------+
skipping to change at page 16, line 38 skipping to change at page 20, line 40
Printer events such as Printer 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 requirement while operator Note: end-user notification is a V1.0 requirement while operator
notification is for V2.0. notification is for V2.0.
3.6. JOB CANCELING 4.6. JOB CANCELING
Client IPP Printer Client IPP Printer
+----------------------------------------------------------- > +----------------------------------------------------------- >
Modify the named job as indicated Cancel the named job as indicated
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
< -----------------------------------------------------------+ < -----------------------------------------------------------+
Response (did it or not) Response (did it or not)
Clients must be able to make changes to jobs which have been Similarly clients must be able to make changes to jobs which have
submitted and are queued for printing. Changing of job been submitted and are queued for printing. Changing of job
attributes should also be supported. Job modifications, holding attributes should also be supported. Job modifications, holding
and releasing of jobs will not be required in IPP v1.0. and releasing of jobs are not requirements for IPP v1.0.
Expires: Sept 24, 1997
4. OBJECTIVES OF THE PROTOCOL
The protocol to be defined by an Internet printing working group
will address the requirements of the end-user (V1.0). It will
not, at least initially, address the operator or administrator
requirements (V2.0).
The protocol defined shall be independent of the operating system
of both the client and the server. Any platform capable of
supporting a WEB Browser shall be supported as a client. Any
platform providing a WEB/HTTP server and printing services shall
be supported as 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
print data is created and transmitted to the printer ''on the
fly'' rather than being created, spooled and then transmitted to
the printer (a typical UNIX method.) The Internet Printing
Protocol must properly handle this methodology and make this
transparent to the end-user.
4.1. SECURITY
Security definitions, issues and requirements are discussed in a
separate draft. See ''draft-ietf-ipp-security-00.txt'' for these
requirements. Authentication shall be required in V1.0.
Privacy, payment, and other aspects of security are not required
for V1.0.
4.2. 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 requirements described in this document, there
Expires: Sept 24, 1997
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.
4.3. EXTENSIBILITY
The Internet Printing Protocol shall be extensible by several
means that facilitates interworking and prevents implementation
collisions:
- by providing a process whereby implementers can submit
proposals for registration of new attributes, new enumerated
values for existing attributes and new tags for attributes
or attribute values
- that require review and approval. The Internet Assigned
Number Authority (IANA) will be the repository for such
accepted registration proposals after review.
- that do not require review and approval. IANA will be the
repository for such registrations.
- by providing syntax in the protocol so that implementers
may add private (i.e. unregistered) attributes, enumerated
attribute values, and tags.
- by providing versioning and negotiation so as to enable Expires: April 15, 1998
future implementations of IPP to interoperate with Copyright(C) The Internet Society 1997. All Rights Reserved.
implementations of version 1.0 of IPP. 5. COPYRIGHT
4.4. FIREWALLS Copyright(C) The Internet Society 1997. All Rights Reserved.
As stated in the end-user requirements section, Internet printing This document and translations of it may be copied and furnished
shall by definition support printing from one enterprise to to others, and derivative works that comment on or otherwise
another. As such, the Internet printing protocol must be capable explain it or assist in its implementation may be prepared,
of passing through firewalls and/or proxy servers (where enabled copied, published and distributed, in whole or in part, without
by the firewall administrator) preferably without modification to restriction of any kind, provided that the above copyright notice
the existing firewall technology. 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.
Expires: Sept 24, 1997 The limited permissions granted above are perpetual and will not
4.5. INTERNATIONALIZATION be revoked by the Internet Society or its successors or assigns.
Users of Internet printing will come from all over the world. As This document and the information contained herein is provided on
such, where appropriate, internationalization and localization an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET
will be enabled for the protocol. 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: Sept 24, 1997 Expires: April 15, 1998
5. REFERENCES Copyright(C) The Internet Society 1997. All Rights Reserved.
6. REFERENCES
RFC1179 - Line Printer Daemon Protocol RFC1179 - Line Printer Daemon Protocol
RFC1759 - Printer MIB RFC1759 - Printer MIB
ISO/IEC 10175, Document Printing Application ISO/IEC 10175, Document Printing Application
6. ACKNOWLEDGMENTS 7. 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 acknowledges the specific contributions of: gratefully acknowledges the specific contributions of:
Scott Isaacson Roger Debry Scott Isaacson
Novell IBM Novell IBM
scott_isaacson@novell.com rdebry@us1.ibm.com _ rdebry@us1.ibm.com Roger Debry scott isaacson@novell.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@wb.xerox.com hastings@cp10.es.xerox.com pzehler@channels.mc_.xerox.com
7. AUTHOR'S ADDRESS 8. 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 40511 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: Sept 24, 1997 Expires: April 15, 1998
8. APPENDIX - DETAILED SCENARIOS Copyright(C) The Internet Society 1997. All Rights Reserved.
9. APPENDIX - DETAILED SCENARIOS
The following are more detailed scenarios illustrating how the The following are more detailed scenarios illustrating how the
Internet Printing Protocol is expected to be used. The Internet Printing Protocol is expected to be used as a part of a
information contained herein is meant to be generic. There may complete Internet Printing system. Some parts of the scenarios
not be an exact wording or terminology match between these include concepts, functions and information that may be outside
scenarios and the implementation documents. of the scope of version 1.0 of IPP (e.g. cost per page, payments
means available, etc.) The information contained herein is meant
to be generic. There may not be an exact wording or terminology
match between these scenarios and the implementation documents.
8.1. PRINTER DISCOVERY WITHIN AN ENTERPRISE 9.1. 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 which will print transparencies. The client, enterprise which will print transparencies. The client,
directory service, and Printer are all behind the same corporate directory service, and printer are all behind the same corporate
firewall. Because color foils are expensive, Printers of this firewall. Because color foils are expensive, printers of this
type are access controlled and require an account to be type are access controlled and require an account to be
established so that printing can be billed back to the using established so that printing can be billed back to the 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 J15. Drivers for all supported printers are available from the
server they are associated with. A help desk is provided for end server they are associated with. A help desk is provided for end
user support. 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
- usable by department J15 - 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 URL - 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: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
- printer is unattended - printer is unattended
- help desk at x5001 - help desk at x5001
Expires: Sept 24, 1997 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
- driver XYZ-Postscript-V2.4 required, here is URL - 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: Sept 24, 1997 Expires: April 15, 1998
8.2. PRINTER DISCOVERY ACROSS ENTERPRISES Copyright(C) The Internet Society 1997. All Rights Reserved.
9.2. 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
partners enterprise (Company B) on which to print a purchase partner's enterprise (Company B) on which to print a purchase
order. The client is behind one corporate firewall and the order. The client is behind one corporate firewall and the
directory service and the Printer are behind a different directory service and the printer are behind a different
corporate firewall. Drivers for all supported Printers are corporate firewall. Drivers for all supported printers are
available from the server they are associated with. A web page is available from the server they are associated 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 (accessible from outside firewall) - is a public printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer ‘ ‘Public-A’ ’ Printer "Public-A"
- prints black and white - prints black and white
- prints Postscript - prints Postscript
- in El Segundo, room H-6, building A - in El Segundo, room H-6, building A
- driver ABC-Postscript-V1.3 required, here is URL - driver ABC-Postscript-V1.3 required, here is URI
- printer is public - printer is public
- 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 URL - 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: Sept 24, 1997 Expires: April 15, 1998
8.3. PRINTER DISCOVERY ON THE INTERNET -LOGICAL OPERATIONS Copyright(C) The Internet Society 1997. All Rights Reserved.
9.3. 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
Kinkos print shop. The report was written using Microsoft Word. Kinko's print shop. The report was written using Microsoft Word.
The student is interested in the cost of printing since his The student is interested in the cost of printing since his
budget is limited. Note the use of logical operators to find this budget is limited. Note the use of logical operators to find this
information. information.
Client Kinkos Directory Service Client Kinko'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
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer ‘ ‘Color-A’ ’ Printer "Color-A"
- prints color - prints color
- 600 dpi laser printer - 600 dpi laser printer
- prints Postscript - prints Postscript
- driver ABC-Postscript-V1.3 required, here is URL - driver ABC-Postscript-V1.3 required, here is URI
- cost is $.50 per page for color - cost is $.50 per page for color
- payment required prior to submitting print job - payment required prior to submitting print job
- here is URL for more information on Kinko’s - here is URI for more information on Kinko's
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 URL - 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 URL for more information on Kinko’s - here is URI for more information on Kinko's
Expires: Sept 24, 1997 Expires: April 15, 1998
8.4. PRINTER DISCOVERY ON THE INTERNET - AUTHENTICATION Copyright(C) The Internet Society 1997. All Rights Reserved.
9.4. 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 her laptop computer. She connects to a local presentation on her laptop computer. She connects to a local
print shop through the web to get a copy of her charts printed print shop through the web to get a copy of her charts printed
for tomorrows presentation. She must find a print shop that is for tomorrow's presentation. She must find a print shop that is
convenient to her hotel and can print color transparencies. She convenient to her hotel and can print color transparencies. She
wants to be sure that the printer can be authenticated and can wants to be sure that the printer can be authenticated and can
accept encrypted data. accept encrypted data.
Client SirSpeedy Directory Service Client SirSpeedy Directory Service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a Printer with these characteristics Find a Printer with these characteristics
- prints color transparencies - prints color transparencies
- is in Downtown Boulder, Colorado - is in Boulder, Colorado
- Printer can be authenticated - Printer can be authenticated
- Printer supports encryption - Printer supports encryption
Give me the Printer’s public key
Tell me when you are open for business Tell me when you are open for business
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer ‘ ‘Color-A’ ’ Printer "Color-A"
- prints color transparencies - prints color transparencies
- prints Postscript - prints Postscript
- driver ABC-Postscript-V1.3 required, here is URL - 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
- Printer’s public key = ‘ ‘CG&89Hj$#004?’ ’
- 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 URL - driver ABC-Postscript-V1.3 required, here is URI
- payment required prior to submitting print job - payment required prior to submitting print job
Expires: Sept 24, 1997
- Printer can be authenticated - Printer can be authenticated
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
- Data can be encrypted - Data can be encrypted
- Printer’s public key = ‘ ‘CG&7%%j$#003’ ’
- 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 9:00am to 6:30pm
Expires: Sept 24, 1997 Expires: April 15, 1998
8.5. DRIVER DOWNLOAD Copyright(C) The Internet Society 1997. All Rights Reserved.
9.5. 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 installed high speed PostScript printer. Since she will newly installed high speed PostScript printer. Since she will
likely use this printer often, she would like to download a likely use this printer often, she would like to download a
driver and install it on her workstation. She is running Windows driver and install it on her workstation. She is running Windows
95. Note: Driver download is not a V1.0 requirement. 95. Note: Driver download is not a V1.0 requirement.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Tell me where to find print drivers for you Tell me where to find print drivers for you
I am using Windows 95 version 1.2
< ----------------------------------------------------------+ < ----------------------------------------------------------+
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: Sept 24, 1997 Expires: April 15, 1998
8.6. SUBMITTING A PRINT JOB AS A FILE Copyright(C) The Internet Society 1997. All Rights Reserved.
9.6. 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 on his workstation. The client and Printer are behind the exists on his workstation. The client and printer are behind the
same corporate firewall. The printer is available to anyone same corporate firewall. The printer is available to anyone
behind the firewall and no authorization or authentication is behind the firewall and no authorization or authentication is
required. The data is pushed to the Printer. The Printer is required. The data is pushed to the 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
skipping to change at page 30, line 5 skipping to change at page 32, 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: Sept 24, 1997 Expires: April 15, 1998
8.7. SUBMITTING A PRINT JOB WITH TWO DOCUMENTS Copyright(C) The Internet Society 1997. All Rights Reserved.
9.7. 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 on his workstation. The client and Printer are behind the exists on his workstation. The client and printer are behind the
same corporate firewall. The printer is available to anyone same corporate firewall. The printer is available to anyone
behind the firewall and no authorization or authentication is behind the firewall and no authorization or authentication is
required. The data is pushed to the Printer. The job consists of required. The data is pushed to the printer. The job consists of
two separate documents. The Printer is capable of spooling the two separate documents. 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
- document #1 is in Postscript format
- here is the document to print
- document #2 is in Postscript format
- 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
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = printing +---------------------------------------------------------- >
- here is the document to print
Expires: Sept 24, 1997 < ----------------------------------------------------------+
8.8. SUBMITTING A PRINT JOB AS A FILE, PRINTING FAILS - OK
+---------------------------------------------------------- >
- here is the document to print, it is the last document.
< ----------------------------------------------------------+
- OK
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
9.8. 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 on his workstation. The client and Printer are behind the exists on his workstation. The client and printer are behind the
same corporate firewall. The printer is available to anyone same corporate firewall. The printer is available to anyone
behind the firewall and no authorization or authentication is behind the firewall and no authorization or authentication is
required. The data is pushed to the Printer. The Printer is not required. The data is pushed to the printer. The printer is not
capable of spooling the output so it begins printing while still capable of spooling the output so it begins printing while still
receiving the file. An error occurs and the printer cannot receiving the file. An error occurs and the printer 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
- 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 - printing failed - current state of Print job accepted
print job = canceled (A4 not available)
- printing failed
- 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
Expires: Sept 24, 1997 Expires: April 15, 1998
8.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND Copyright(C) The Internet Society 1997. All Rights Reserved.
9.9. SUBMITTING A PRINT JOB WITH AUTHENTICATION, PRIVACY AND
PAYMENT PAYMENT
A traveling executive needs to print a set of transparencies for A traveling executive needs to print a set of transparencies for
an important business meeting. The charts are in Lotus Freelance an important business meeting. The charts are in Lotus Freelance
format on his notebook computer. He has located a SirSpeedy print format on his notebook computer. He has located a SirSpeedy print
shop near his hotel that will print color transparencies. Because shop near his hotel that will print color transparencies. Because
the information on the charts is sensitive, he wants to be sure 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 that his data is sent to the Printer in an encrypted format. He
also wants to authenticate the Printer. The Printer also also wants to authenticate the Printer. The Printer also
authenticates the user. Payment occurs across the Internet. 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
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is a print job Here is a print job (encrypted)
- job name = MyJob - job name = MyJob
- notify me by email when done printing - notify me by email when done printing
- print on iso-a4-white paper - print on iso-a4-white paper
- print on both sides of the paper - print on both sides of the paper
- return status of the printer in response - return status of the printer in response
- tell me where to pick up output - tell me where to pick up output
- document is in Postscript format - document is in Postscript format
- here is the document to print (encrypted) - here is the document to print
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job accepted and spooled Print job accepted and spooled (encrypted)
- job id = #12345 - job id = #12345
- current state of print job = spooled - current state of print job = spooled
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = printing - printer state = printing
- payment required to proceed with job - payment required to proceed with job
- pick up at 230 East Main after 3:30pm today - pick up at 230 East Main after 3:30pm today
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Payment transaction Payment transaction
Expires: Sept 24, 1997 Expires: April 15, 1998
8.10. SUBMITTING A PRINT JOB WITH DECRYPTION ERROR Copyright(C) The Internet Society 1997. All Rights Reserved.
9.10. 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 important business meeting. The charts are in Lotus Freelance an important business meeting. The charts are in Lotus Freelance
format on his notebook computer. He has located a SirSpeedy print format on his notebook computer. He has located a SirSpeedy print
shop near his hotel that will print color transparencies. Because shop near his hotel that will print color transparencies. Because
the information on the charts is sensitive, he wants to be sure 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 that his data is sent to the printer in an encrypted format. He
also wants to authenticate the Printer. The Printer also also wants to authenticate the printer. The printer also
authenticates the user. Payment occurs across the Internet. An authenticates the user. Payment occurs across 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 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 (encrypted) - here is the document to print
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job accepted and spooled Print job accepted and spooled (encrypted)
- job id = #12345 - job id = #12345
- current state of print job = spooled - current state of print job = spooled
- submission time = 02/12/97, 15:35 - submission time = 02/12/97, 15:35
- printer state = printing - printer state = printing
- payment required to proceed with job - payment required to proceed with job
- pick up at 230 East Main after 3:30pm today - pick up at 230 East Main after 3:30pm today
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Payment transaction Payment transaction
Expires: Sept 24, 1997
. .
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. 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: Sept 24, 1997 Expires: April 15, 1998
8.11. SUBMITTING A PRINT JOB WITH AUTHENTICATION Copyright(C) The Internet Society 1997. All Rights Reserved.
9.11. 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 on his workstation. The client and Printer are behind the exists on his workstation. The client and printer are behind the
same corporate firewall. The printer is available to anyone same corporate firewall. The printer is available to anyone
behind the firewall but authentication and authorization is behind the firewall but authentication and authorization is
required. Authorization takes place using the authenticated end- required. Authorization takes place using the authenticated end-
user’s name. The data is pushed to the Printer. The Printer is user's name. The data is pushed to the 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 36, line 5 skipping to change at page 38, 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: Sept 24, 1997 Expires: April 15, 1998
8.12. SUBMITTING A PRINT JOB GENERATED DYNAMICALLY Copyright(C) The Internet Society 1997. All Rights Reserved.
9.12. 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 dynamically and is being transmitted by a printer generated dynamically and is being transmitted by a printer
driver on the client workstation as available. The client and driver on the client workstation as available. The client and
Printer are behind the same corporate firewall. The printer is printer are behind the same corporate firewall. The printer is
available to anyone behind the firewall and no authentication and available to anyone behind the firewall and no authentication and
authorization is required. The data is pushed to the Printer. The authorization is required. The data is pushed to the printer. The
Printer is capable of spooling the output. No error occurs. printer is capable of spooling the output. 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: Sept 24, 1997 Expires: April 15, 1998
8.13. SUBMITTING A PRINT JOB WITH A PRINTER JAM - CANCELED Copyright(C) The Internet Society 1997. All Rights Reserved.
9.13. 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 dynamically and is being transmitted by a printer generated dynamically and is being transmitted by a printer
driver on the client workstation as available. The client and driver on the client workstation as available. The client and
Printer are behind the same corporate firewall. The printer is printer are behind the same corporate firewall. The printer is
available to anyone behind the firewall and no authentication and available to anyone behind the firewall and no authentication and
authorization is required. The data is pushed to the Printer. The authorization is required. The data is pushed to the printer. The
Printer is not capable of spooling the output. The printer jams printer is not capable of spooling the output. The printer jams
notifies the user and the user chooses to cancel the job. notifies the user and the user chooses to 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
skipping to change at page 38, line 5 skipping to change at page 40, 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: Sept 24, 1997 Expires: April 15, 1998
8.14. SUBMITTING A PRINT JOB WITH A PRINTER JAM - RECOVERED Copyright(C) The Internet Society 1997. All Rights Reserved.
9.14. 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 dynamically and is being transmitted by a printer generated dynamically and is being transmitted by a printer
driver on the client workstation as available. The client and driver on the client workstation as available. The client and
Printer are behind the same corporate firewall. The printer is printer are behind the same corporate firewall. The printer is
available to anyone behind the firewall and no authentication and available to anyone behind the firewall and no authentication and
authorization is required. The data is pushed to the Printer. The authorization is required. The data is pushed to the printer. The
Printer is not capable of spooling the output. The printer jams, printer is not capable of spooling the output. The printer jams,
notifies the user and the user clears the jam and elects to notifies the user and the user clears the jam 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
skipping to change at page 39, line 5 skipping to change at page 41, 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: Sept 24, 1997 Expires: April 15, 1998
8.15. SUBMITTING A PRINT JOB WITH SERVER PULL Copyright(C) The Internet Society 1997. All Rights Reserved.
9.15. 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 is publicly available. It is pulled by the Printer. The file and is publicly available. It is pulled by the printer. The
client and Printer are behind the same corporate firewall. The client and printer are behind the same corporate firewall. The
printer is available to anyone behind the firewall and no printer is available to anyone behind the firewall and no
authentication and authorization is required. The Printer is authentication and authorization is required. The printer is
capable of spooling the output. Printing may start before the capable of spooling the output. Printing may 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
skipping to change at page 40, line 5 skipping to change at page 42, 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: Sept 24, 1997 Expires: April 15, 1998
8.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES Copyright(C) The Internet Society 1997. All Rights Reserved.
9.16. SUBMITTING A PRINT JOB WITH REFERENCED RESOURCES
An end-user wants to submit a print job. The print data is on a An end-user wants to submit a print job. Part of the print data
file on the user’s workstation. It is pushed by the client, but is on a file on the user's workstation. It is pushed by the
printing requires some resources not included in the print file, client, but the print job requires some resource not included in
e.g. a high resolution image or a font resource. Printer. The the print file. The client and printer are behind the same
client and Printer are behind the same corporate firewall. The corporate firewall. The printer is available to anyone behind the
printer is available to anyone behind the firewall and no firewall and no authentication and authorization is required. The
authentication and authorization is required. The Printer is 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
- external resource required - here is URL
- here is the data to be printed
- (with an external data reference)
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print data accepted and printing started Print job accepted and spooled
- job id = #12345 - job id = #12345
- current state of job = spooled - submission time = 02/12/97, 15:35
- submission time = 02/12/97, 13:15
- printer state = printing +---------------------------------------------------------- >
- here is the document to print
< ----------------------------------------------------------+
- OK
+---------------------------------------------------------- >
- here is the URI to print, it is the last document.
< ----------------------------------------------------------+
- OK
.
.
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Get the external resource Get the external resource
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here it is Here it is
Expires: Sept 24, 1997 Expires: April 15, 1998
8.17. GETTING CAPABILITIES Copyright(C) The Internet Society 1997. All Rights Reserved.
9.17. GETTING CAPABILITIES
8.17.1. Submission Attributes 9.17.1. 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 are supported or required when submitting jobs to this that are supported or required when submitting jobs to this
Printer. The client will use these attributes when forming the printer. The client will use these attributes when forming the
subsequent print request. subsequent print request.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Im 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
8.17.2. Printer Capabilities 9.17.2. Printer Capabilities
An end-user wants to determine the resolution, marking An end-user wants to determine the resolution, marking
technology, and PDLs supported by the printer. technology, and 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: Sept 24, 1997 Expires: April 15, 1998
8.18. GETTING STATUS Copyright(C) The Internet Society 1997. All Rights Reserved.
9.18. GETTING STATUS
8.18.1. Printer State/Status 9.18.1. 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
8.18.2. Job Status 9.18.2. 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
8.18.3. Status of All My Jobs 9.18.3. 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 this Printer. submitted to this Printer.
Client IPP Printer Client IPP Printer
+---------------------------------------------------------- > +---------------------------------------------------------- >
Please tell me the status of my jobs Please tell me the status of my jobs
Expires: Sept 24, 1997
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
Job #00012 is complete Job #00012 is complete
Printed at 12:35 on 01/23/97 Printed at 12:35 on 01/23/97
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: Sept 24, 1997 Expires: April 15, 1998
8.19. ASYNCHRONOUS NOTIFICATION Copyright(C) The Internet Society 1997. All Rights Reserved.
9.19. ASYNCHRONOUS NOTIFICATION
8.19.1. Job Completion 9.19.1. 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 jobs. Print job completes without error. print jobs. Print job completes without error.
Client IPP Printer Client IPP Printer
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Print job #123 completed Print job #123 completed
8.19.2. Job Complete with Data 9.19.2. 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 jobs. Print job completes, users asked for all end of job print 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
8.19.3. Print Job Fails 9.19.3. 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 jobs. Print job fails. Printer is unattended. print 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: Sept 24, 1997 Expires: April 15, 1998
8.20. CANCEL A JOB Copyright(C) The Internet Society 1997. All Rights Reserved.
9.20. 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: Sept 24, 1997 Expires: April 15, 1998
8.21. END TO END SCENARIO - WITHIN AN ENTERPRISE Copyright(C) The Internet Society 1997. All Rights Reserved.
9.21. 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 the office are public, that is, no authentication or printers in the office are public, that is, no authentication or
authorization is required. Printers are protected from external authorization is required. Printers are protected from external
access by a firewall. No billing or accounting is required. Most access by a firewall. No billing or accounting is required. Most
printing is done from desktop applications. A help desk is printing is done from desktop applications. A help desk is
provided for printing problems. Standard operating systems and provided for printing problems. Standard operating systems and
applications are used. Drivers are available, but are installed applications are used. Drivers are available, but are installed
manually by support personnel. This scenario assumes that drivers manually by support personnel. This scenario assumes that 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,
skipping to change at page 47, line 4 skipping to change at page 48, line 48
- 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 piece at a time as it is generated. driver a 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
Expires: Sept 24, 1997
- printer state = printing - printer state = printing
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
- 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 each is available on a pull-down menu on the client. state of each is available on a pull-down menu on the client.
End-user selects job #1234 from list and clicks on it to see its End-user selects job #1234 from list and clicks on it to see its
status. status.
+---------------------------------------------------------- > +---------------------------------------------------------- >
skipping to change at page 48, line 5 skipping to change at page 50, line 5
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: Sept 24, 1997 Expires: April 15, 1998
8.22. END TO END SCENARIO - ACROSS ENTERPRISES Copyright(C) The Internet Society 1997. All Rights Reserved.
9.22. 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 ‘ ‘public’ ’ printer at Company B, a business partner. Both on a "public" printer at Company B, a business partner. Both
companies have corporate firewalls so the print request must flow companies have corporate firewalls so the print request must flow
out of A’s firewall and into B’s firewall. The office worker can out of A's firewall and into B's firewall. The office worker can
look at public printers in Company B’s directory service. The look at public printers in Company B's directory service. The
document is generated by a desktop application. Since the printer document is generated by a desktop application. Since the printer
is ‘ ‘public’ ’ no authentication or authorization is required. A is "public" no authentication or authorization is required. A
driver is downloaded. The driver is IPP aware, that is, it can driver is downloaded. The driver is IPP aware, that is, it can
communicate dynamically through the IPP protocol layer to obtain communicate dynamically through the IPP protocol layer to obtain
information about the printer. information about the printer.
Client Company Bs Directory Service Client Company B's Directory Service
End user connects to Bs Directory service End user connects to B's Directory service
+---------------------------------------------------------- > +---------------------------------------------------------- >
Find a Printer with these characteristics Find a Printer with these characteristics
- public (no authorization or authentication required) - public (no authorization or authentication required)
- is in Lexington, building 004 - is in Lexington, building 004
- prints black and white - prints black and white
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer ‘ ‘Public-A’ ’ Printer "Public-A"
- http://www.lexmark.com/pubprinter/a - http://www.lexmark.com/pubprinter/a
Printer ‘ ‘Public-B’ ’ Printer "Public-B"
- http://www.lexmark.com/pubprinter/b - http://www.lexmark.com/pubprinter/b
End user selects Public-A End user selects Public-A
Client Public-A Client Public-A
+---------------------------------------------------------- > +---------------------------------------------------------- >
I am using OS/2 V4.5, 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: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
End-user selects print from the application pull down menu. End-user selects print from the application pull down menu.
‘ ‘Public-A’ ’ is selected from the list of Printers offered "Public-A" is selected from the list of Printers offered
+---------------------------------------------------------- > +---------------------------------------------------------- >
Im 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
< ----------------------------------------------------------+ < ----------------------------------------------------------+
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
skipping to change at page 50, line 5 skipping to change at page 52, line 5
- 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 piece at a time. driver a piece at a time.
+---------------------------------------------------------- > +---------------------------------------------------------- >
Here is the print data Here is the print data
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. 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
skipping to change at page 51, line 5 skipping to change at page 53, line 5
< ----------------------------------------------------------+ < ----------------------------------------------------------+
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: Sept 24, 1997 Expires: April 15, 1998
8.23. END TO END SCENARIO - ON THE INTERNET Copyright(C) The Internet Society 1997. All Rights Reserved.
9.23. 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 her laptop computer. She connects to a local presentation on her laptop computer. She connects to a local
print shop through the web to get a copy of her charts printed print shop through the web to get a copy of her charts printed
for tomorrows presentation. She must find a print shop that is for tomorrow's presentation. She must find a print shop that is
convenient and can print color transparencies. She must download convenient and can print color transparencies. She must download
and temporarily install a driver in order to generate the PDL and temporarily install a driver in order to generate the PDL
required by the print shop. Mutual authentication is required by required by the print shop. Mutual authentication is required by
the printshop and payment must be made in advance. The job is the printshop and payment must be made in 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 SirSpeedy home page. to the SirSpeedy home page.
Client SirSpeedy Directory Service Client SirSpeedy 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)
- takes my VISA card -
- give me rough cost per page
Available Printers matching these characteristics are looked up Available Printers matching these characteristics are looked up
in the Directory Service in the Directory Service
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Printer ‘ ‘Color-A’ ’ Printer "Color-A"
- located at 123 First Street in San Jose - located at 123 First Street in San Jose
- URL is http://www.SirSpeedy.com/FirstStreet/Color-A - URI is http://www.SirSpeedy.com/FirstStreet/Color-A
- prints color transparencies - prints color transparencies
- 600 dpi laser - 600 dpi laser
- driver ABC-Postscript-V1.3 available at this URL - 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’s public key = ‘ ‘!@8778961’ ’
Printer ‘ ‘Color-B’ ’
Expires: Sept 24, 1997 Printer "Color-B"
- located at 67 San Carlos Street, San Jose - located at 67 San Carlos Street, San Jose
- URL is http://www.SirSpeedy.com/SanCarlos/Color-B - URI is http://www.SirSpeedy.com/SanCarlos/Color-B
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
- prints color transparencies - prints color transparencies
- 1200 dpi laser - 1200 dpi laser
- driver XYZ-Poscscript-V4.3 available at this URL - driver XYZ-Poscscript-V4.3 available at this URI
- cost = $1.25 per page - cost = $1.25 per page
- authentication required to use printer - authentication required to use printer
- payment required prior to printing - payment required prior to printing
- printer’s public key = ‘ ‘!@#$%78961’ ’ -
- more information at this URL - 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 connects to the URL given to get a driver. She connects to the URI given to get a driver.
Client Driver URL Client Driver URI
+---------------------------------------------------------- > +---------------------------------------------------------- >
I need a driver for ‘ ‘Color-A’ ’ I need a driver for "Color-A"
I am using Windows 95
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Driver installation files Driver installer is at http://www.xerox.com/prtdrvrs
Driver is installed Driver is installed
User connects to User connects to
‘ ‘Color-A’ ’ "Color-A"
Client IPP Printer ‘ ‘Color-A’ ’ Client IPP Printer "Color-A"
+---------------------------------------------------------- > +---------------------------------------------------------- >
< ----------------------------------------------------------+ < ----------------------------------------------------------+
Mutual authentication and exchange of secret keys Mutual authentication and exchange of secret keys
+---------------------------------------------------------- > +---------------------------------------------------------- >
Im 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
< ----------------------------------------------------------+ < ----------------------------------------------------------+
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
Expires: Sept 24, 1997
- default is draft - default is draft
- sides = 1-sided, 2-sided-long-edge - sides = 1-sided, 2-sided-long-edge
Expires: April 15, 1998
Copyright(C) The Internet Society 1997. 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
skipping to change at line 1850 skipping to change at line 1975
- 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 SirSpeedy Thank you for using SirSpeedy
Expires: Sept 24, 1997 Expires: April 15, 1998
Copyright(C) The Internet Society 1997. All Rights Reserved.
 End of changes. 

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