[asterisk-bugs] [Asterisk 0011858]: Trunk requires externip=ip:port if bindport!=5060

[noreply at bugs.digium.com]

The following issue has been ASSIGNED. 
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http://bugs.digium.com/view.php?id=11858 
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Reported By:                hmodes
Assigned To:                file
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Project:                    Asterisk
Issue ID:                   11858
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
Asterisk Version:           SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 100679 
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             01-28-2008 19:31 CST
Last Modified:              01-29-2008 09:28 CST
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Summary:                    Trunk requires externip=ip:port if bindport!=5060
Description: 
Contrary to the configs/sip.conf in trunk, which states (regarding
externip=)

;      If a port number is not present, use the "bindport" value (which
is
;      not guaranteed to work correctly, because a NAT box might remap
the
;      port number as well as the address).

SVN-trunk-r100679M does _not_ append bindport to externip when creating a
Via field on invite (see attached sip debug) but instead defaults to 5060.

This causes a natted sip client (cisco 7960 with nat_enable = 1) to
transmit responses to the wrong port.  Specifying externip=ip:bindport
causes the Via to be created with the correct port and the phone to respond
correctly.

Relevant sip.conf general section:

[general]
context=default ; Default context for incoming calls
recordhistory=yes ; Record SIP history by default 
realm=matrix.gs ; Realm for digest authentication
bindport=5066 ; UDP Port to bind to (SIP standard port is 5060)
bindaddr=0.0.0.0 ; IP address to bind to (0.0.0.0 binds to all)
srvlookup=yes ; Enable DNS SRV lookups on outbound calls
tos_audio=184
videosupport=no ; Turn on support for SIP video
sdpsession=session
allow=all
useragent=matrix.gs asterisk ; Allows you to change the user agent string
externip = *my external ip here w/o port specified*
localnet=172.27.28.0/255.255.255.0; All RFC 1918 addresses are local
networks

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---------------------------------------------------------------------- 
 svnbot - 01-29-08 09:28  
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Repository: asterisk
Revision: 100833

U   trunk/channels/chan_sip.c

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r100833 | file | 2008-01-29 09:28:08 -0600 (Tue, 29 Jan 2008) | 4 lines

Make externip work as documented. If no port is specified it will use the
value of bindport instead of always being 5060.
(closes issue http://bugs.digium.com/view.php?id=11858)
Reported by: hmodes

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http://svn.digium.com/view/asterisk?view=rev&revision=100833 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
01-29-08 09:28  svnbot         Note Added: 0081322                          
01-29-08 09:28  svnbot         Status                   new => assigned     
01-29-08 09:28  svnbot         Assigned To               => file            
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