[asterisk-bugs] [Asterisk 0015802]: [patch] chan_sip will not retransmit an ACK

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15802 
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Reported By:                nmav
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15802
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     ready for testing
Asterisk Version:           1.4.26.1 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-08-31 10:10 CDT
Last Modified:              2010-02-22 03:49 CST
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Summary:                    [patch] chan_sip will not retransmit an ACK
Description: 
In commit 204243 it was added a check on whether to retransmit an ACK or
not. In my case this breaks retransmission in the following scenario:
-> INVITE
<- 100 Trying
<- 180 Ringing
<- 200 OK SDP
[ACK is lost]
<- 200 OK SDP
<- 200 OK SDP


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 (0118323) tjardick (reporter) - 2010-02-22 03:49
 https://issues.asterisk.org/view.php?id=15802#c118323 
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We just performed a test with the above patch, as we had the same issue of
ACK's only being send once and if not received the first time, would result
in a hangup of call.

I can confirm that the above patch resolved this issue for us. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-02-22 03:49 tjardick       Note Added: 0118323                          
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