[asterisk-bugs] [Asterisk 0014446]: [patch] chan_sip does not support the maddr attribute in Via headers

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=14446 
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Reported By:                frawd
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14446
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.23 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-02-10 04:12 CST
Last Modified:              2009-02-10 11:25 CST
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Summary:                    [patch] chan_sip does not support the maddr
attribute in Via headers
Description: 
I recently connected Asterisk with a badly configured Nortel CS2K, which
sends me the following Via header:

Via: SIP/2.0/UDP
CS2KSSTEMAG:5060;maddr=213.60.204.48;branch=z9hG4bK-142abd7-ec6f41f2-4aeebdaf

CS2KSSTEMAG not being a valid DNS entry, the reply is never sent (Asterisk
blocks trying to resolve the name). Even tho it is a configuration error,
maddr should be used as reply address.

The attached patch fixes the issue in 1.4.23.1
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 (0099808) oej (manager) - 2009-02-10 11:25
 http://bugs.digium.com/view.php?id=14446#c99808 
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And there can be multiple via-values in one via header, so we need to
search for the leftmost one... 

Issue History 
Date Modified    Username       Field                    Change               
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2009-02-10 11:25 oej            Note Added: 0099808                          
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