[asterisk-bugs] [Asterisk 0017078]: MixMonitor records shorter files than the call duration.

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
====================================================================== 
https://issues.asterisk.org/view.php?id=17078 
====================================================================== 
Reported By:                geoff2010
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   17078
Category:                   Applications/app_mixmonitor
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.30 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2010-03-23 00:38 CDT
Last Modified:              2010-03-23 00:38 CDT
====================================================================== 
Summary:                    MixMonitor records shorter files than the call
duration.
Description: 
Hello,
I am having an 100% reproducible issue with MixMonitor.  My recording
files are being truncated by a few seconds.  

I am a 100% SIP deployment.  No dahdi channels or anything.

I have narrowed it down to a particular scenario which causes the problem.
 It appears the issue is related to delaying the Answer() in the dial plan.
 Basically, i have a dialplan which does this:

[start]
exten => _NXXNXXXXXX,1,Ringing()
exten => _NXXNXXXXXX,n,AGI(agi://localhost/dosomething.agi)
exten => _NXXNXXXXXX,n,Hangup()


[conference]
exten => _NXXNXXXXXX,1,MixMonitor(/home/recordings/blah.WAV,a)
exten => _NXXNXXXXXX,n,Conference(1234)
exten => _NXXNXXXXXX,n,Hangup()


In that scenario, the FastAGI script would do a lookup.  Depending on the
results of the lookup, it will do an Answer() and then a redirect to the
[conference] context where the MixMonitor would be attached.  We are
basically looking for a condition, so sometimes the FastAGI could wait up
to 20 or 30 seconds before returning an Answer().

If I modify the flow and return Answer() immediately, the recording file
will be perfect.  The way I have it flowed out above - I lose 3-7 seconds
of audio at the end of the file.  

If there is anything else I can provide, i would be happy to.  

Thanks.
====================================================================== 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-03-23 00:38 geoff2010      New Issue                                    
2010-03-23 00:38 geoff2010      Asterisk Version          => 1.4.30          
2010-03-23 00:38 geoff2010      Regression                => No              
2010-03-23 00:38 geoff2010      SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
======================================================================