[asterisk-bugs] [Asterisk 0009305]: [patch] REINVITE before 200ok causes a call to be ended

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=9305 
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Reported By:                atca_pres
Assigned To:                oej
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Project:                    Asterisk
Issue ID:                   9305
Category:                   Channels/chan_sip/Transfers
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     confirmed
Asterisk Version:            SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  1.4 
SVN Revision (number only!): 58957 
Disclaimer on File?:        Yes 
Request Review:              
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Date Submitted:             03-16-2007 13:28 CDT
Last Modified:              11-12-2007 11:41 CST
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Summary:                    [patch] REINVITE before 200ok causes a call to be
ended
Description: 
When Flash hooking:
Box 1 sends a INVITE with a contact 0.0.0.0 (Hold)
Asterisk sends a invite to box 2
Box 2 sends a trying
Asterisk sends a second invite to box 2 with a differetn CSeq, Branch and
Session version(SDP). This trigger a 500 msg.
The 500 is triggered because you cannot (according to RFC) send a second
invite when you have an unfinished dialog

Note : No RTP Portal
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Relationships       ID      Summary
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related to          0009142 Placing a call on hold sends two INVITE...
related to          0009209 race condition in sip hangup with reinv...
related to          0009649 BYE calls too fast when connected to a ...
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---------------------------------------------------------------------- 
 one47 - 11-12-07 11:41  
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To paraphrase the patch, in case it helps in validating it:

1) The "Pending-Invite" flag has been set because we had a transaction in
progress already. If a transaction is still in progress or we seem to be
mid-INVITE still, then we cannot clear this flag yet, so leave it set and
do nothing.

2) The "Pending-Bye" flag has been set because we had a transaction in
progress. "BYE" cannot be sent mid-transaction (only CANCEL), so apply the
same rules here to prevent sending a BYE. 

Issue History 
Date Modified   Username       Field                    Change               
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11-12-07 11:41  one47          Note Added: 0073524                          
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