RFC 3265 (rfc3265) - Page 2 of 38

Session Initiation Protocol (SIP)-Specific Event Notification

RFC 3265            SIP-Specific Event Notification            June 2002


   3.2.     Description of NOTIFY Behavior......................... 13
   3.2.1.   Identification of Reported Events, Event Classes, and
            Current State.......................................... 13
   3.2.2.   Notifier NOTIFY Behavior............................... 14
   3.2.3.   Proxy NOTIFY Behavior.................................. 15
   3.2.4.   Subscriber NOTIFY Behavior............................. 16
   3.3.     General................................................ 18
   3.3.1.   Detecting support for SUBSCRIBE and NOTIFY............. 18
   3.3.2.   CANCEL requests........................................ 18
   3.3.3.   Forking................................................ 18
   3.3.4.   Dialog creation and termination........................ 18
   3.3.5.   State Agents and Notifier Migration.................... 19
   3.3.6.   Polling Resource State................................. 20
   3.3.7.   Allow-Events header usage.............................. 21
   3.3.8.   PINT Compatibility..................................... 21
   4.       Event Packages......................................... 21
   4.1.     Appropriateness of Usage............................... 21
   4.2.     Event Template-packages................................ 22
   4.3.     Amount of State to be Conveyed......................... 22
   4.3.1.   Complete State Information............................. 23
   4.3.2.   State Deltas........................................... 23
   4.4.     Event Package Responsibilities......................... 24
   4.4.1.   Event Package Name..................................... 24
   4.4.2.   Event Package Parameters............................... 24
   4.4.3.   SUBSCRIBE Bodies....................................... 24
   4.4.4.   Subscription Duration.................................. 25
   4.4.5.   NOTIFY Bodies.......................................... 25
   4.4.6.   Notifier processing of SUBSCRIBE requests.............. 25
   4.4.7.   Notifier generation of NOTIFY requests................. 25
   4.4.8.   Subscriber processing of NOTIFY requests............... 26
   4.4.9.   Handling of forked requests............................ 26
   4.4.10.  Rate of notifications.................................. 26
   4.4.11.  State Agents........................................... 27
   4.4.12.  Examples............................................... 27
   4.4.13.  Use of URIs to Retrieve State.......................... 27
   5.       Security Considerations................................ 28
   5.1.     Access Control......................................... 28
   5.2.     Notifier Privacy Mechanism............................. 28
   5.3.     Denial-of-Service attacks.............................. 28
   5.4.     Replay Attacks......................................... 29
   5.5.     Man-in-the middle attacks.............................. 29
   5.6.     Confidentiality........................................ 29
   6.       IANA Considerations.................................... 30
   6.1.     Registration Information............................... 30
   6.2.     Registration Template.................................. 31
   6.3.     Header Field Names..................................... 31
   6.4.     Response Codes......................................... 32
   7.       Syntax................................................. 32



Roach                       Standards Track