IPP> NOT - Updated 'ipp-get' Delivery Method for Event Notification po sted

IPP> NOT - Updated 'ipp-get' Delivery Method for Event Notification po sted

IPP> NOT - Updated 'ipp-get' Delivery Method for Event Notification po sted

Hastings, Tom N hastings at cp10.es.xerox.com
Wed Sep 20 12:36:56 EDT 2000


This was renamed from 'ipp-getw' at the meeting last week to 'ipp-get' and
agreed to be the third RECOMMEND delivery method for IPP Notification.  This
method is a synthesis of Harry's server directed polling method and the
earlier 'ipp-get' polling method.  We also agreed at the meeting that for
the moment we are not pursuing any additional Event Notification Delivery
Methods.  Send comments to the mailing list and/or discuss at today's
telecon.

Here is the Abstract:

The notification extension document [ipp-ntfy] defines operations that a
client can perform in order to create Subscription Objects in a Printer and
carry out other operations on them. A Subscription Object represents a
Subscription abstraction. The Subscription Object specifies that when one of
the specified Events occurs, the Printer sends an asynchronous Event
Notification to the specified Notification Recipient via the specified
Delivery Method (i.e., protocol). 
The notification extension document [ipp-ntfy] specifies that each Delivery
Method is defined in another document. This document is one such document,
and it specifies the 'ippget' delivery method.
The 'ippget' Delivery Method is a 'pull and push' Delivery Method. That is,
the Printer saves Event Notification for a period of time and expects the
Notification Recipient to fetch the Event Notifications (the pull part). The
Printer continues to send Event Notifications to the Notification Recipient
as Events occur (the push part) if the client has selected the option to
wait for additional Event Notifications.
When a Printer supports this Delivery Method, it holds each Event
Notification for an amount of time, called the Event Notification Lease
Time. 
When a Notification Recipient wants to receive Event Notifications, it
performs an IPP operation called 'Get-Notifications', which this document
defines. This operation causes the Printer to return all Event Notifications
held for the Notification Recipient. If the Notification Recipient has
selected the option to wait for additional Event Notifications, the Printer
continues sending Event Notifications to the Notification Recipient as
additional Events occur. 

The -rev is diffed with the old file name ipp-poll which had the older
'ipp-get' method.  The files are available at:

ftp://ftp.pwg.org/pub/pwg/ipp/new_NOT/ipp-notify-get-000918-rev.doc
ftp://ftp.pwg.org/pub/pwg/ipp/new_NOT/ipp-notify-get-000918-rev.pdf
ftp://ftp.pwg.org/pub/pwg/ipp/new_NOT/ipp-notify-get-000918.doc
ftp://ftp.pwg.org/pub/pwg/ipp/new_NOT/ipp-notify-get-000918.pdf
ftp://ftp.pwg.org/pub/pwg/ipp/new_NOT/ipp-notify-get-000918.txt
ftp://ftp.pwg.org/pub/pwg/ipp/new_NOT/draft-ietf-ipp-notify-get-00.txt




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