No subject

I have some devices in the following scenario:

Asterisk server with public IP address
Mobile devices (clients):

When in internal network, no NAT between the client and the server
When in "roaming" (i.e. a Hotel with WiFi), the client is behing =
a NAT
When in 3G, operator transparent sip proxy so it looks as no NAT, but does =
not support symmetric RTP.
Sometime, the device gets a public IP with no NAT at all.
No NAT setting available in asterisk works for all these scenarios at the s=
ame time, and I can not request the user to activate different accounts dep=
ending on its location.

I have added a new NAT setting (nat=3Dauto) to the current ones. When set, =
chan_sip auto detects from the Via header, the recv sockaddr, and the rport=
 setting if the client is behind a NAT.

It also adds to cli interface results (sip show peer/s) info on this (so no=
w you could see "N" for NAT and nothing for no NAT as before, &qu=
ot;a&quot; for auto detect no NAT, and &quot;A&quot; for autodetect NAT.</p=
re>
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<div style=3D"margin-top: 1.5em;">
 <b style=3D"color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>


 <a href=3D"https://issues.asterisk.org/jira/browse/ASTERISK-17860">ASTERIS=
K-17860</a>


</div>


<h1 style=3D"color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b>=
 (updated)</h1>
<ul style=3D"margin-left: 3em; padding-left: 0;">

 <li>/trunk/channels/chan_sip.c <span style=3D"color: grey">(352610)</span>=
</li>

 <li>/trunk/channels/sip/include/sip.h <span style=3D"color: grey">(352610)=
</span></li>

 <li>/trunk/configs/sip.conf.sample <span style=3D"color: grey">(352610)</s=
pan></li>

</ul>

<p><a href=3D"https://reviewboard.asterisk.org/r/1698/diff/" style=3D"margi=
n-left: 3em;">View Diff</a></p>




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