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<p>Hello,</p>
<p>good to know -- useful information to have in mind.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<br>
<div class="moz-cite-prefix">On 08/03/2017 09:49, Grant Bagdasarian
wrote:<br>
</div>
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<p class="MsoNormal"><span style="color:windowtext" lang="NL">Hi
Daniel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext" lang="NL"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Thank you
for the answer.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">I’ve also
asked the same question on the rtpengine github page and
they suggested to try the asymmetric flag and that fixed the
issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Another fix
has been suggested, but I haven’t tried it yet.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">For anyone
else interested in the same issue:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><a
moz-do-not-send="true"
href="https://github.com/sipwise/rtpengine/issues/330">https://github.com/sipwise/rtpengine/issues/330</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Grant
Bagdasarian<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">CM<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1
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<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> sr-users
[<a class="moz-txt-link-freetext" href="mailto:sr-users-bounces@lists.sip-router.org">mailto:sr-users-bounces@lists.sip-router.org</a>]
<b>On Behalf Of </b>Daniel-Constantin Mierla<br>
<b>Sent:</b> dinsdag 7 maart 2017 23:06<br>
<b>To:</b> Kamailio (SER) - Users Mailing List
<a class="moz-txt-link-rfc2396E" href="mailto:sr-users@lists.sip-router.org"><sr-users@lists.sip-router.org></a><br>
<b>Subject:</b> Re: [SR-Users] rtpengine sending rtp to
wrong endpoint after reinvite<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Hello,<span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">On 07/03/2017 13:10, Grant Bagdasarian
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="NL">Hi,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="NL"> </span><o:p></o:p></p>
<p class="MsoNormal">One of our customers is using a SEMS box
to place two outbound calls using our sip trunk.
<o:p></o:p></p>
<p class="MsoNormal">Once the first call is connected a second
call is placed and when the second call answers their server
sends a re-invite to switch audio ports so the rtp traffic
doesn’t flow through their server anymore but is routed
inside our platform.<o:p></o:p></p>
<p class="MsoNormal">Basically, they just switch SDP’s of both
calls. <o:p></o:p></p>
<p class="MsoNormal">It seems like a random issue, and is not
really reproducible, except for placing multiple calls and
sometimes both parties can hear each other, other times they
can’t, because rtpengine fails (I think) to update the
endpoint and keeps sending rtp back to their server for one
of the call legs.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">We tried to reproduce the case using a
freeswitch box and it worked every time. After the reinvite,
the rtp remained within our platform.<o:p></o:p></p>
<p class="MsoNormal">The signaling in both cases still goes
through the freeswitch or sems for call control.
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Does anyone have experience with this
case? Or seen the issue before where rtpengine keeps sending
rtp to the original endpoint?<o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><br>
Have your checked to see if the sip messages are
received/processed in the expected order?<br>
<br>
In some very rare situations, it happened that the re-invite
was sent very fast by callee after just sending the 200ok,
so that the re-invite arrived to the proxy/rtprelay before
the 200ok, so at the end the sdp from 200ok was taken as the
last relevant one for the peer. I put there rtprelay,
because I faced this issue where I had rtpproxy, but maybe
the issue is exposed by the rtpengine as well.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<o:p></o:p></span></p>
<pre>-- <o:p></o:p></pre>
<pre>Daniel-Constantin Mierla<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a moz-do-not-send="true" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a><o:p></o:p></pre>
<pre>Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - <a moz-do-not-send="true" href="http://www.asipto.com">www.asipto.com</a><o:p></o:p></pre>
<pre>Kamailio World Conference - May 8-10, 2017 - <a moz-do-not-send="true" href="http://www.kamailioworld.com">www.kamailioworld.com</a><o:p></o:p></pre>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - May 8-10, 2017 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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