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<tt>Hello,<br>
<br>
Not clear from the diagram, but the UAC2 is behind the NAT, not
OpenSIPS and UAC1, right ?<br>
<br>
As Laszlo suggested, you need a force_rport(), but not only for
INVITE, but for all requests coming from behind the NAT - like the
BYE, in your case.<br>
<br>
Regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<br>
On 04/04/2013 05:29 PM, çÏÇÉÞÁÛ×ÉÌÉ áÎÄÒÅÊ wrote:
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<p class="MsoNormal"><span lang="EN-US">Hello! I have some
trouble with nat
handling.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have such scheme:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">uac1---opensips---(NAT)---uac2<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I call to UAC2 and
signaling establishment
is ok. Whenš UAC2 sends BYEš opensips translates 200OK
(received from UAC1) to
the wrong port. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p>š</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">BYE generated by UAC2
has such via header:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">“Via: SIP/2.0/UDP
192.168.18.137:5060;branch=z9hG4bK8b517b11a415”<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">and the BYE comes from U
2013/04/04
17:21:50.287792 1.1.1.1:59292 -> 2.2.2.2:5068<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Where 1.1.1.1 – nat,
2.2.2.2 -
opensips<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p>š</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Opensips adds one more
via header to the
BYE:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Via: SIP/2.0/UDP
2.2.2.2;branch=z9hG4bK7f45.debc1592.0. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">and changes first via
header by adding
received field:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Via: SIP/2.0/UDP
192.168.18.137:5060;received=1.1.1.1;branch=z9hG4bK8b517b11a415<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p>š</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">200 OK got from UAC1
opensips tries to send
not to 1.1.1.1:59292 but to 1.1.1.1:5060<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The question is how can
we make opensips to
send 200 OK to 59292 port?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p>š</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you for any help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p>š</o:p></span></p>
<p class="MsoNormal"><o:p>š</o:p></p>
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