Carl-Uno Manros, Chair, led the Internet Printing Protocol (IPP) WG session. Around 19 people attended. Agenda: - Overview of finished work since the previous IETF meeting - Status of finished and remaining work on IPP Notifications - Status of finished and remaining work - Status of IPP/1.1 Implementer's Guide - Directory Support for IPP - Summary of remaining work for the IPP WG - Other IPP related activities Carl-Uno said that the IPP Extensions work was not formalized by IESG but the group has almost completed the work anyway. Ned Freed later indicated that he would prefer to pursue a modification to the existing IPP WG Charter rather than create a separate WG for these activities. However, he only supports this approach if there is general interest in the group to do so. A timeline diagram showed that the first two IPP Bake-offs were held in 1998 and 1999. Current plan for Bake-off 3 is in October 2000, and expected IPP/1.1 Extensions Bake-off in 2001. Finished Internet-Drafts: - Model and Semantics - RFC soon - Encoding and Transport - RFC soon - Implementer's Guide (not STD track) - Informational document - Job and Printer Set Operations - Proposed Standard - The 'collection' attribute syntax - Proposed Standard Carl-Uno provided the list of Internet-Drafts on Notifications: - Requirements for IPP Notifications - WG Last Call - Event Notification Specification - WG Last Call - Job Progress Attributes - WG Last Call - The 'mailto' Notification Delivery Method - WG Last Call - The INDP Notification Delivery Method and Protocol/1.0 - WG Last Call - The 'ipp-get' Delivery Method - Notifications over SNMP He noted that there is no MANDATORY Notification method according to the current Internet-Drafts. Both 'mailto' and 'indp' are described as methods that SHOULD be supported. Bob Herriot provided slides that gave a "Quick Summary of Notifications". He briefly described the following items: - Subscribers - Notifications - Delivery Methods - mailto: - indp: - ippget: - snmpnotify: - Event Notification Content (and format) Bob gave more detail on each of the individual notification delivery methods, and a simple example of an IPP Notification. He asked, "Should any of the Delivery Methods be REQUIRED? If so, which one(s)?" Carl-Uno asked Ned Freed (Applications Area Director) his opinion on Bob's question. Ned was surprised that the Internet-Drafts were modified to SHOULD support. He asked what the objections were to making any method(s) MANDATORY. Ned suggested a compromise: If you implement user notification, then you MUST do mailto. If you implement machine notification, then you MUST do indp. After further discussion, this did not seem to be an adequate conclusion. Ned then volunteered to discuss this issue further with the other Area Director and IESG members. He warned that his response on this topic might take a while. Several other WGs have recently submitted Internet-Drafts that will occupy his time in the near future. Bob Herriot then asked a question about using HTTP Chunking with regard to notification messages. He asked the group whether HTTP proxies support chunking: - for POST in requests? - for POST in responses? But none of the attendees could provide an answer. Ned suggested that Bob should forward the question to the HTTP reflector. Carl-Uno listed a few other Internet-Drafts that the group has also been working on: - Job and Printer Administration Operations (aka Set 2) - Printer Installation Extension - Resource Objects and Get Resource Operations - LDAP Schema for Printer Services - WG Last Call Future Activity in 2000: - IPP Notifications drafts should be stable - Two delivery methods still unfinished - IPP Administration Operations drafts should be stable - Device operations still missing - IPP Printer Installation draft should be stable - High priority in IPP WG - Needs further work and review Carl-Uno gave some information about QualDocs: - Internet Fax Formats over IPP - Earlier proposed as WG in the IETF - The Printer Working Group (PWG) will take over the project effort - First meeting in Chicago on September 15 - USA and Japan interests - IEEE-ISTO Standard Details on the 3rd IPP Bake-off: - Will be held in Boston area October 16-20 - Organized by PWG, hosted by Oak Technologies - 25+ companies expected to participate - IPP/1.1 features, security, firewalls, notifications, admin operations(?) will be tested IPP and Linux: - VA Linux and HP initiative - Print Summit meeting in Sunnyvale last week - CUPS and LPRNG projects already provide open source for IPP - New project will aim to integrate various Linux components for printing - application interface - print driver interface Meeting adjourned.