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Status: Verified (1)

RFC 3996, "Internet Printing Protocol (IPP): The 'ippget' Delivery Method for Event Notifications", March 2005

Source of RFC: ipp (app)

Errata ID: 5411
Status: Verified
Type: Technical

Reported By: Michael Sweet
Date Reported: 2018-06-26
Verifier Name: Alexey Melnikov
Date Verified: 2018-07-26

Section 5.2.2 says:

     Table 4.  Additional Attributes in Event Notification Content for
                                Job Events

   Source Value                                  Sends  Source Object

   job-id (integer(1:MAX))                       MUST   Job
   job-state (type1 enum)                        MUST   Job

It should say:

     Table 4.  Additional Attributes in Event Notification Content for
                                Job Events

   Source Value                                  Sends  Source Object

   notify-job-id (integer(1:MAX))                MUST   Job
   job-state (type1 enum)                        MUST   Job

Notes:

The notify-job-id attribute [RFC3995] contains the subscribed Job identifier.

Status: Held for Document Update (1)

RFC 3996, "Internet Printing Protocol (IPP): The 'ippget' Delivery Method for Event Notifications", March 2005

Source of RFC: ipp (app)

Errata ID: 5413
Status: Held for Document Update
Type: Technical

Reported By: Michael Sweet
Date Reported: 2018-06-28
Held for Document Update by: Alexey Melnikov
Date Held: 2018-07-26

Section 5.2.1 says:

   The value of this attribute MUST be at least as large as that of the
   Printer's "ippget-event-life" Printer Description attribute (see
   section 8.1).  The Printer MAY return a value that is larger than
   that of the "ippget-event-life" Printer Description attribute
   provided that the Printer increases the Event Life for this
   Subscription object so that Notification Recipients taking account of
   the larger value and polling with a longer interval will not miss
   events.  Note:  Implementing such an algorithm requires some hidden
   attributes in the Subscription object that are IMPLEMENTATION
   DEPENDENT.

It should say:

   If the value of this attribute is larger than that of the
   "ippget-event-life" Printer Description attribute, the Printer MUST
   increase the Event Life for this Subscription object so that
   Notification Recipients taking account of the larger value and
   polling with a longer interval will not miss events.  Note:
   Implementing such an algorithm requires some hidden state in the
   Subscription object that is IMPLEMENTATION DEPENDENT.

Notes:

The range of values allowed for the "notify-get-interval" attribute (0 to 2^31-1) is different from the "ippget-event-life" attribute (15 to 2^31-1), and implementations have ignored this requirement because it makes no sense. Furthermore, the use of MAY for larger values does not clearly capture the requirement to extend event lives in order to avoid missing notifications.

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