[asterisk-bugs] [Asterisk 0018936]: When transferring a call using the REFER command with replaces enabled, Asterisk drops the call.

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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https://issues.asterisk.org/view.php?id=18936 
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Reported By:                ltc
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18936
Category:                   Channels/chan_sip/Transfers
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           SVN 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!): 309808 
Request Review:              
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Date Submitted:             2011-03-07 14:10 CST
Last Modified:              2011-03-07 14:10 CST
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Summary:                    When transferring a call using the REFER command
with replaces enabled, Asterisk drops the call.
Description: 
When transferring a call using the REFER command with replaces enabled,
Asterisk drops the call with "SIP/2.0 481 Call leg/transaction does not
exist". I have tried performing this on 1.4 SVN, 1.8.3, Trunk SVN 309404,
and 1.8 SVN 309808. All have produced the same result. I have attached the
debug logs with core and sip debugging on. Unfortunately I do not have a
way to perform a successful transfer with REFER to compare against. Line
432 is where the REFER starts. Chan_sip.c starts to process the REFER but
then later drops it on line 538 with the "SIP/2.0 481 Call leg/transaction
does not exist". 
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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2011-03-07 14:10 ltc            New Issue                                    
2011-03-07 14:10 ltc            Asterisk Version          => SVN             
2011-03-07 14:10 ltc            Regression                => No              
2011-03-07 14:10 ltc            SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
2011-03-07 14:10 ltc            SVN Revision (number only!) => 309808          
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