<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<tt>Hi, Denis!<br>
<br>
According to the SIP RFC, if the Proxy doesn't receive any reply,
it will not generate a CANCEL. Are you sending at least 100 Trying
between your servers?<br>
<br>
Best regards,<br>
</tt>
<pre class="moz-signature" cols="72">Răzvan Crainea
OpenSIPS Solutions
<a class="moz-txt-link-abbreviated" href="http://www.opensips-solutions.com">www.opensips-solutions.com</a></pre>
<div class="moz-cite-prefix">On 12/19/2016 12:42 PM, Denis wrote:<br>
</div>
<blockquote cite="mid:7372101482144158@web37j.yandex.ru" type="cite">
<div>
<div
style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;text-align:start;text-transform:none;white-space:normal;background-color:rgb(255,255,255);">Hello!</div>
<div
style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;text-align:start;text-transform:none;white-space:normal;background-color:rgb(255,255,255);"> </div>
<div
style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;text-align:start;text-transform:none;white-space:normal;background-color:rgb(255,255,255);">Server::
OpenSIPS (2.2.2 (x86_64/linux))</div>
<div
style="color:rgb(0,0,0);font-family:Arial,sans-serif;font-size:15px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;text-align:start;text-transform:none;white-space:normal;background-color:rgb(255,255,255);">
<div> </div>
<div>I am going to use Opensips as top_hiding, load balancer
and proxy instance.</div>
<div> </div>
<div>My scheme looks as follows.</div>
<div> </div>
<div>The first instance: top_hiding and load balancer. It
listens 5060 and 5068 ports.</div>
<div>The second instance: proxy. It listens 5065 port.</div>
<div> </div>
<div>The scheme of the call:</div>
<div> </div>
<div>Caller SIP UA -> first instance (makes top_hiding and
load balancer) -> second instance (makes routing and
setup destination URI) -> first instance (makes
top_hiding) -> Callee SIP UA.</div>
<div> </div>
<div>This scheme of the call seems to be working correctly
(from perspective of SIP signalling) for:</div>
<div>- successful call (i.e. call with answer)</div>
<div>- Cancel transaction during ringing of th callee</div>
<div> </div>
<div>But when i emulated situation, when callee becomes
unreachable (internet problem or other) the PROXY doesn`t
send CANCEL to the first instance on the third leg.</div>
<div> </div>
<div>tcpdump capture of the problem call you can find here.</div>
<div><a moz-do-not-send="true" target="_blank"
style="color:rgb(153,0,153);"
href="https://yadi.sk/d/ase8fSjw342eBJ">https://yadi.sk/d/ase8fSjw342eBJ</a></div>
<div> </div>
<div>Where</div>
<div>Caller - 192.168.18.150</div>
<div>the first instance and the second are located on the same
server (IP address - 172.31.0.10)</div>
<div> </div>
<div>Thank you for any help.</div>
<div> </div>
<div>-- </div>
<div>Best regards, Denis</div>
</div>
</div>
<div> </div>
<div>-- </div>
<div>С уважением,</div>
<div>Путято Денис.</div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a>
</pre>
</blockquote>
<br>
</body>
</html>