[asterisk-bugs] [Asterisk 0018081]: SIP 200 OK withou ACK

[Asterisk Bug Tracker]

The following issue requires your FEEDBACK. 
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https://issues.asterisk.org/view.php?id=18081 
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Reported By:                marhbere
Assigned To:                
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Project:                    Asterisk
Issue ID:                   18081
Category:                   Channels/chan_sip/General
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): 1.6.0 
SVN Revision (number only!): 262803 
Request Review:              
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Date Submitted:             2010-09-30 16:35 CDT
Last Modified:              2010-10-05 15:05 CDT
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Summary:                    SIP  200 OK  withou ACK
Description: 
We have the issue when happening a problem into network.

When Receive INVITE and we respond 200 OK, and this last not arrived to
the originator, then the originator resend INVITE many times. But the
*Asterisk "Answers" all this call such as if it were differents calls.

I guess this is heavy problem when will try conciliation with CDR calls.

Please can tell me if we have any mistake

Tanks
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 (0127709) lmadsen (administrator) - 2010-10-05 15:05
 https://issues.asterisk.org/view.php?id=18081#c127709 
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Looking through this log, I'm not sure this is a problem with Asterisk.
Asterisk is responding with the 200 OK, and the other end is not ACKing it.
We keep accepting the INVITEs and then ignoring them until the maximum time
is reached at which point it appears the setup has failed and is then
discarded from memory.

The other end continues to send INVITES back and since there is no dialog
in memory, Asterisk is treating it as a new call.

This is pretty much what I would expect to happen. From my viewpoint, it
looks like a NAT or firewall configuration problem on the network in which
the other end point is sending an INVITE to Asterisk, and is not getting
the responses, so it keeps trying over and over again.

Additionally, you marked this as against Asterisk 1.6.0 which is no longer
receiving bug fixes -- only security fixes. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-10-05 15:05 lmadsen        Note Added: 0127709                          
2010-10-05 15:05 lmadsen        Status                   new => feedback     
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