[asterisk-bugs] [Asterisk 0013440]: No TO tag after SIP INFO in early dialog

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=13440 
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Reported By:                atca_pres
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13440
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  1.4  
SVN Revision (number only!): 140115 
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2008-09-07 15:29 CDT
Last Modified:              2008-09-07 15:29 CDT
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Summary:                    No TO tag after SIP INFO in early dialog
Description: 
A Calls Asterisk IVR
IVR answers
A enters B's ext
A pushes a DTMF while B is ringing
A hangs up

in SIP :
A INVITES Asterisk
Asterisk 200OK (IVR)
Asterisk INVITES B
B sends 180 Ringing
A sends SIP INFO 
Asterisk sends SIP INFO to B
A BYEs Asterisk
Asterisk sends CANCEL with no TO Tag

The UA cannot match the INVITE to the CANCEL because the CANCEL does not
have the TO tag that was in the provisional responses (100 trying and 180
ringing).

B only ack the CANCEL without sending the required 487 to cancel the
INVITE. B Stays ringing forever. 

Attached is the SIP debug + core and verbose 5 (asterisk -Tvvvvvdddddngc |
tee /tmp/verbosedebug.txt) and an ethereal capture for easier reading. 
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Issue History 
Date Modified    Username       Field                    Change               
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2008-09-07 15:29 atca_pres      Asterisk Version          => SVN             
2008-09-07 15:29 atca_pres      SVN Branch (only for SVN checkouts, not tarball
releases) =>  1.4            
2008-09-07 15:29 atca_pres      SVN Revision (number only!) => 140115          
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