[asterisk-bugs] [Asterisk 0014239]: 491-request pending is sent out of dialog

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=14239 
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Reported By:                klaus3000
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14239
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.22 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2009-01-14 07:33 CST
Last Modified:              2009-01-14 07:33 CST
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Summary:                    491-request pending is sent out of dialog
Description: 
Hi!

Asterisk does not handle the following scenario correctly:

--INVITE-->
<-407------
[ACK is lost]

--INVITE w/credentials-->
<-----------491----------

The 491 is wrong as the 491 is only allowed for in-dialog requests. As the
first INVITE is not accepted there is no dialog set up. Thus, Asterisk may
retransmit the 407 to trigger retransmission of the ACK, but this must be
independet from the second INVITE which should be accepted instead of
rejecting with 491 - even if the ACK was not received.

I checked lates SVN commits in chan_sip and itlooks like the problem is
still there.

This issue is maybe related to http://bugs.digium.com/view.php?id=13849
(although in http://bugs.digium.com/view.php?id=13849 the second
INVITE is in-dialog).
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Issue History 
Date Modified    Username       Field                    Change               
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2009-01-14 07:33 klaus3000      New Issue                                    
2009-01-14 07:33 klaus3000      Asterisk Version          => 1.4.22          
2009-01-14 07:33 klaus3000      Regression                => No              
2009-01-14 07:33 klaus3000      SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
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