<div dir="ltr">sorry，I have not expressed clearly.<div><br><div>kamailio will recive two REGISTER at a time.In first 200 OK to REGISTER, Server will tell Linphone the Linphone Nat Ip and Port.</div><div>like this:</div><div>Via:SIP/2.0/TCP 30.9.2.1:50691;received=42.1.7.1;alias;branch=z9hG4bK.kmhC2L9Rf;rport=33746</div><div>and Linphone will know it's outside nat Ip and port, Linphone while use this Ip and Port in second REGISTER.</div><div>like this:</div><div>REGSITER </div><div>Contact:<sip: 42.1.7.1:33746;transport=tcp></div><div><br></div><div>So kamailio server know Linphone's nated ip and port and save in DB(contact field).</div><div><br></div><div><br></div><div>my question is <span style="font-size:14px">KA_</span><span style="font-size:14px">EDGE receive sip from </span><span style="font-size:14px">KA_</span><span style="font-size:14px">REGISTER already have right nat ip and port like</span></div><div><span style="font-size:14px">INVITE 123456@</span>42.1.7.1:33746;transport=tcp SIP/2.0</div><div>but <span style="font-size:14px">KA_</span><span style="font-size:14px">EDGE do not send this sip msg to </span><a href="http://42.1.7.1:33746">42.1.7.1:33746</a>, it send to another nat ip and port(other Linphone's ip and port behind same NAT layer)</div>
<div><div><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-03-14 21:42 GMT+08:00 Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Indeed, the ports are different, that's why adding received is
important in this situation.<br>
<br>
While local ip and local port are in most of the cases also unique
for devices behind a nat router, it is not 100% true, because there
can be many layers of NATs, which can result in seeing same local
ip/port for devices.<br>
<br>
Cheers,<br>
Daniel<div><div class="h5"><br>
<br>
<div>On 14/03/16 13:06, 张顺通 wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr"><span style="font-size:14px">source IP is same,
But port is different。</span><br>
<div><span style="font-size:14px">like INVITE
<a>sip:Linphone_nat_Ip:Linphone_nat_port;tcp</a>;</span></div>
<div><span style="font-size:14px"><br>
</span></div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-03-14 18:26 GMT+08:00
Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank"></a><a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Adding received
information to Path helps to identify properly the
connection to be used. Because both devices are behind the
same NAT, practically they show the same source IP when
they send traffic to server.<br>
<br>
Cheers,<br>
Daniel
<div>
<div><br>
<br>
<div>On 14/03/16 04:05, 张顺通 wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr"><span style="font-size:14px">KA_</span><span style="font-size:14px">EDGE have two IP，external
public IP and internal IP.</span><br>
<div><span style="font-size:14px">I
add modparam("path", "use_received", 1) and
replace add_path() to add_path_received() in
edge server.</span></div>
<div><span style="font-size:14px">add modparam("registrar",
"path_use_received", 1) in </span><span style="font-size:14px">KA_</span><span style="font-size:14px">REGISTER server.</span></div>
<div><span style="font-size:14px"><br>
</span></div>
<div><span style="font-size:14px">DB path
info <<a>sip:aD15fXXXXXXXXXXXXeEpfqRY=@</a><a href="http://10.10.10.11" target="_blank">10.10.10.11</a>;lr;ob>
--> <sip:</span><span style="font-size:14px">10.10.10.11</span><span style="font-size:14px">;lr;received=<a></a><a>sip:42.129.1.1:43640%3Btransport%3Dtcp</a>></span></div>
<div><span style="font-size:14px"><br>
</span></div>
<div><span style="font-size:14px">This kind of
situation very little，It is not easy to
reappear.</span><br>
</div>
<div><span style="font-size:14px">Can you tell me
why this </span><span style="font-size:14px">situation
happen? and Why this change can solve the
problem?</span></div>
<div><br>
</div>
<div>Thanks for Your Time.<br>
</div>
<div><span style="font-size:14px"><br>
</span></div>
<div><span style="font-size:14px"><br>
</span></div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-03-09 22:37
GMT+08:00 Daniel Tryba <span dir="ltr"><<a href="mailto:d.tryba@pocos.nl" target="_blank"></a><a href="mailto:d.tryba@pocos.nl" target="_blank">d.tryba@pocos.nl</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>On Wed, Mar 09,
2016 at 10:05:11PM +0800, 张顺通 wrote:<br>
> Yes，Use Path in DB. like <<a></a><a>sip:XXxXXXXXXXXXX/ogxZg=@</a><a href="http://10.10.232.29" rel="noreferrer" target="_blank">10.10.232.29</a>;lr;ob><br>
> KA_REGISTER wile the path info in DB.<br>
<br>
</span>Should not be a problem if you use the
use_received options in<br>
<a href="http://kamailio.org/docs/modules/stable/modules/path.html#idp135216" rel="noreferrer" target="_blank">http://kamailio.org/docs/modules/stable/modules/path.html#idp135216</a><br>
and<br>
<a href="http://kamailio.org/docs/modules/stable/modules/registrar.html#registrar.p.path_use_received" rel="noreferrer" target="_blank">http://kamailio.org/docs/modules/stable/modules/registrar.html#registrar.p.path_use_received</a><br>
<br>
(and actually add the source as received on
the kamailio edge server).<br>
<div>
<div><br>
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</blockquote>
</div>
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<br>
<fieldset></fieldset>
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<pre>_______________________________________________
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<pre cols="72">--
Daniel-Constantin Mierla
<a href="http://www.asipto.com" target="_blank">http://www.asipto.com</a>
<a href="http://twitter.com/#%21/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a>
Kamailio World Conference, Berlin, May 18-20, 2016 - <a href="http://www.kamailioworld.com" target="_blank">http://www.kamailioworld.com</a></pre>
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<br>
_______________________________________________<br>
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users
mailing list<br>
<a href="mailto:sr-users@lists.sip-router.org" target="_blank">sr-users@lists.sip-router.org</a><br>
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<br>
</blockquote>
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</blockquote>
<br>
<pre cols="72">--
Daniel-Constantin Mierla
<a href="http://www.asipto.com" target="_blank">http://www.asipto.com</a>
<a href="http://twitter.com/#!/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a>
Kamailio World Conference, Berlin, May 18-20, 2016 - <a href="http://www.kamailioworld.com" target="_blank">http://www.kamailioworld.com</a></pre>
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