[asterisk-bugs] [Asterisk 0018058]: SIP session timers do not transmit session expiry or refresher timer in 200 OK

[Asterisk Bug Tracker]

The following issue has been UPDATED. 
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https://issues.asterisk.org/view.php?id=18058 
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Reported By:                legranjl
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18058
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           SVN 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-09-27 00:34 CDT
Last Modified:              2010-09-28 10:53 CDT
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Summary:                    SIP session timers do not transmit session expiry or
refresher timer in 200 OK
Description: 
When acting as uac the 200ok replay to uas does not include the sessoin
expiry and refresher timer. This turns the timer off.

RFC4028, chapter 7.2:
   "If the 2xx response did not contain a Session-Expires header field,
   there is no session expiration.  In this case, no refreshes need to
   be sent.  A 2xx without a Session-Expires can come for both initial
   and subsequent session refresh requests.  This means that the session
   timer can be 'turned-off' in mid dialog by receiving a response
   without a Session-Expires header field.


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Issue History 
Date Modified    Username       Field                    Change               
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2010-09-28 10:53 lmadsen        Category                
Channels/chan_sip/General => Channels/chan_sip/Interoperability
2010-09-28 10:53 lmadsen        Summary                  Timer support => SIP
session timers do not transmit session expiry or refresher timer in 200 OK
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