[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:                putnopvut
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Project:                    Asterisk
Issue ID:                   12312
Category:                   Channels/chan_sip/Registration
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     ready for review
Target Version:             1.6.2
Asterisk Version:           1.4.18 
Regression:                 No 
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:              2009-01-10 09:46 CST
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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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 (0097424) blitzrage (administrator) - 2009-01-10 09:46
 http://bugs.digium.com/view.php?id=12312#c97424 
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FYI, this may not be an issue at all on trunk anymore, as I cannot seem to
get it to fail in registration on that version. I am going to try on the
latest 1.4 branch and see if it is an issue there or not. It seems the
ast_get_srv function is doing something right, and never causing the
registration to file form what I can see.

I'm re-registering every 60 seconds, so I've been monitoring it for a bit
now, and have seen no failures. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-01-10 09:46 blitzrage      Note Added: 0097424                          
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