[asterisk-bugs] [JIRA] (ASTERISK-21742) SIP Session-Expires: Set timer to correctly expire at (~2/3) of the expiry interval when not the refresher.

[Digium Subversion (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Digium Subversion closed ASTERISK-21742.
----------------------------------------

    Resolution: Fixed
    
> SIP Session-Expires: Set timer to correctly expire at (~2/3) of the expiry interval when not the refresher. 
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21742
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21742
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General
>         Environment: SVN-branch-11-r386878M 
>            Reporter: Alec Davis
>            Assignee: Alec Davis
>            Severity: Minor
>         Attachments: session_timer_expires.diff.txt
>
>
> RFC 4028 Section 10
>    if the side not performing refreshes does not receive a
>    session refresh request before the session expiration, it SHOULD send
>    a BYE to terminate the session, slightly before the session
>    expiration.  The minimum of 32 seconds and one third of the session
>    interval is RECOMMENDED.
> Testing:
> asterisk to phone.
> Phone's Session-Expires: 120
> [Apr 30 22:49:20] NOTICE[12686][C-00000000]: chan_sip.c:29006 start_session_timer: Session timer started: 104 - 50a7397219b8f47e192f74e81f3b125e at 192.168.x.y:5060 88000ms
> <<<<<  pull ethernet on phone >>
> <<<<<  88 seconds later       >>
> [Apr 30 22:50:48] WARNING[12686]: chan_sip.c:29042 proc_session_timer: Session-Timer expired - 50a7397219b8f47e192f74e81f3b125e at 192.168.x.y:5060
> Phone to Asterisk, No Session-Expires
> Asterisk's Session-Expires: 300
> [Apr 30 23:47:02] NOTICE[12857][C-00000001]: chan_sip.c:29006 start_session_timer: Session timer started: 99 - 7160947918a9977c at 192.168.124.73 150000ms

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