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<p>Hi Bogdan,</p>
<p>Thankyou, SIPPING_ENABLE bflag was olny being set where
nat_uac_test was returning true.</p>
<p>When I set SIPPING_ENABLE bflag irrespective of nat_uac_test, I
see the SIP OPTIONS pings.</p>
<p>I did not realise that even with modparam("nathelper",
"ping_nated_only", 0) set, the bflag was still required for the
OPTIONS ping.</p>
<p>Thank you again.<br>
</p>
<p><br>
</p>
<font face="Verdana, Helvetica, Sans-Serif" color="#000000">Kind
regards,<br>
<br>
Adrian Fretwell<br>
<br>
Sibthorpe<br>
Nottinghamshire<br>
UK.<br>
</font>
<p><br>
</p>
<div class="moz-cite-prefix">On 23/06/2020 14:33, Bogdan-Andrei
Iancu wrote:<br>
</div>
<blockquote type="cite"
cite="mid:321d9390-58b3-8979-3d33-d13851068527@opensips.org">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<tt>Hi Adrian,<br>
<br>
Do you set the </tt><tt>SIPPING_ENABLE bflag before saving the
contact ?<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="https://www.opensips-solutions.com" moz-do-not-send="true">https://www.opensips-solutions.com</a>
</pre>
<div class="moz-cite-prefix">On 6/23/20 1:35 PM, Adrian Fretwell
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:48eb36c7-db5a-173d-f33b-01d43e009c42@topgreen.co.uk">
<meta http-equiv="content-type" content="text/html;
charset=UTF-8">
<p>Hello All,</p>
<p>Opensips v3.0.</p>
<p>I have a simple routing script that implements a
mid-registrar. All of the endpoints are behind NAT so I need
the proxy to send keep alive pings.</p>
<p>I have the nathelper module loaded with the following
configuration:</p>
<p>/* --- Module NATHELPER ---------------<br>
<br>
NAT traversal helper module<br>
------------------------------------*/<br>
loadmodule "nathelper.so"<br>
modparam("nathelper", "natping_interval", 30)<br>
modparam("nathelper", "ping_nated_only", 0)<br>
modparam("nathelper", "sipping_method", "OPTIONS")<br>
modparam("nathelper", "sipping_bflag", "SIPPING_ENABLE")<br>
modparam("nathelper", "sipping_from", <a
class="moz-txt-link-rfc2396E" href="sip:pinger@mrp1.xxxx.uk"
moz-do-not-send="true">"sip:pinger@mrp1.xxxx.uk"</a>)<br>
modparam("nathelper", "received_avp", "$avp(received_nh)")<br>
modparam("nathelper", "ping_threshold", 5)<br>
modparam("nathelper", "max_pings_lost", 3)<br>
modparam("nathelper", "natping_partitions", 4)<br>
modparam("nathelper", "remove_on_timeout_bflag",
"SIPPING_RTO")<br>
modparam("nathelper", "natping_tcp", 1)<br>
<br>
</p>
<p>The nathelper module is sending the 4 byte UDP packets
(verified by packet capture), but I cannot get it to send SIP
OPTIONS pings.</p>
<p>According to paragraph 1.2 (NAT pinging types), there are two
types, UDP package and SIP request. I cannot work out how to
make it use SIP request.</p>
<p>I assume that I do need SIP OPTIONS pings for the
removal_on_timeout to work.<br>
</p>
<p>Can anyone point me in the right direction please?<br>
</p>
<p><br>
</p>
<div class="moz-signature"> <br>
</div>
<font face="Verdana, Helvetica, Sans-Serif" color="#000000">Kind
regards,<br>
<br>
Adrian Fretwell<br>
Sibthorpe<br>
Nottinghamshire<br>
</font>
<p><font face="Verdana, Helvetica, Sans-Serif" color="#000000">UK.<br>
</font></p>
<br>
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</pre>
</blockquote>
<br>
</blockquote>
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