[asterisk-bugs] [Asterisk 0012312]: [patch] DNS SRV lookups causing re-registration problems

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12312 
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Reported By:                jrast
Assigned To:                
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Project:                    Asterisk
Issue ID:                   12312
Category:                   Channels/chan_sip/Registration
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     ready for testing
Asterisk Version:           1.4.18 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2008-03-26 17:38 CDT
Last Modified:              2008-08-01 09:33 CDT
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Summary:                    [patch] DNS SRV lookups causing re-registration
problems
Description: 
SIP peer uses DNS SRV records which list multiple entries for
_sip._udp.domain.  

Asterisk is selecting one and successfully registering with it.  When
attempting to re-register, Asterisk is not selecting the same host. 
Instead it is ALWAYS selecting another host, sending seven SIP REGISTER
requests to it, then failing over to the next (correct) host, at which
point the re-register succeeds.  However, this process exceeds the
registration expiry and the registration is timing out on every
re-registration cycle.

Peer in question is callcentric.com.
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 (0090975) jrast (reporter) - 2008-08-01 09:33
 http://bugs.digium.com/view.php?id=12312#c90975 
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Folks, thanks for your efforts in working on a proper fix for this.

Unfortunately at the moment I cannot easily test it.  The system in
question is in production use, with my original hack that fixed the
problem.  At the moment, I am personally preparing for an extended trip out
of town so do not have time to set up another system.  Because of that
trip, it is unlikely I will be back and able to look at this much before
November or December!

I wanted to provide you this info so you didn't think I was rudely
ignorning you all and say thanks, again, for the efforts.  Perhaps someone
else with a Callcentric account can look at this in the meantime? 

Issue History 
Date Modified    Username       Field                    Change               
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2008-08-01 09:33 jrast          Note Added: 0090975                          
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