[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. 
====================================================================== 
https://issues.asterisk.org/view.php?id=14446 
====================================================================== 
Reported By:                frawd
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   14446
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
Target Version:             1.4.28
Asterisk Version:           SVN 
JIRA:                       SWP-251 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2009-02-10 04:12 CST
Last Modified:              2009-11-11 02:47 CST
====================================================================== 
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
====================================================================== 

---------------------------------------------------------------------- 
 (0113643) oej (manager) - 2009-11-11 02:47
 https://issues.asterisk.org/view.php?id=14446#c113643 
---------------------------------------------------------------------- 
There's another bug report about the reply handling. Asterisk should not
reply to any address in the via, it should always reply to the source
IP/port that sent us a message (as IBC says). 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-11-11 02:47 oej            Note Added: 0113643                          
======================================================================