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<tt>IF you do not want to chain, yes, just ignore that attribute.<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>
OpenSIPS Summit 2018
<a class="moz-txt-link-freetext" href="http://www.opensips.org/events/Summit-2018Amsterdam">http://www.opensips.org/events/Summit-2018Amsterdam</a>
</pre>
<div class="moz-cite-prefix">On 01/15/2018 06:42 PM, William Simon
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BLUPR18MB0243DA7CB1285E4154E686E4A3EB0@BLUPR18MB0243.namprd18.prod.outlook.com">
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<p style="margin-top:0;margin-bottom:0">Thanks Bogdan-Andrei. If
I don't intend to chain multiple RTPProxy, is there any reason
to keep the nortpproxy_str attribute, or is it safe to disable
it by setting it to empty string?</p>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
color="#000000" face="Calibri, sans-serif"><b>From:</b>
Bogdan-Andrei Iancu <a class="moz-txt-link-rfc2396E" href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
<b>Sent:</b> Monday, January 15, 2018 11:08:41 AM<br>
<b>To:</b> OpenSIPS users mailling list; William Simon<br>
<b>Subject:</b> Re: [OpenSIPS-Users] nortpproxy_str usage</font>
<div> </div>
</div>
<div style="background-color:#FFFFFF"><tt>Hi William,<br>
<br>
IF you end up chaining multiple RTPproxy'es, you need to be
sure you avoid the "learning" deadlock between them - as
rtpproxy is normally waiting to receive RTP in order to learn
the end-points IP+port (as the IP coordinates from SDP are
private, so not usable). So, if the IP in the received SDP in
public, use the "r" flag when triggering rtpproxy (not to
wait, but to trust the IP+port in SDP) - see
<a class="x_moz-txt-link-freetext"
href="http://www.opensips.org/html/docs/modules/2.3.x/rtpproxy.html#idp5556688"
moz-do-not-send="true">
http://www.opensips.org/html/docs/modules/2.3.x/rtpproxy.html#idp5556688</a><br>
<br>
Best regards,<br>
</tt>
<pre class="x_moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="x_moz-txt-link-freetext" href="http://www.opensips-solutions.com" moz-do-not-send="true">http://www.opensips-solutions.com</a>
OpenSIPS Summit 2018
<a class="x_moz-txt-link-freetext" href="http://www.opensips.org/events/Summit-2018Amsterdam" moz-do-not-send="true">http://www.opensips.org/events/Summit-2018Amsterdam</a>
</pre>
<div class="x_moz-cite-prefix">On 01/12/2018 08:48 PM, William
Simon wrote:<br>
</div>
<blockquote type="cite">I have a provider that is reflecting the
a=nortpproxy:yes attribute back to me in the SDP of its reply.
I know it's being reflected back because when I customize that
header using the nortpproxy_str setting, I get my own value
back in the provider's replies.
<div class=""><br class="">
</div>
<div class="">The result is that the answer side of rtpproxy
isn't engaged and there's no audio.</div>
<div class=""><br class="">
</div>
<div class="">From an old thread (<a
href="http://lists.opensips.org/pipermail/users/2012-November/023444.html"
class="" moz-do-not-send="true">http://lists.opensips.org/pipermail/users/2012-November/023444.html</a>)
it seems like the best option for me is to simply disable
this a=nortpproxy:yes attribute and let the opensips logic
engage rtpproxy all the time.</div>
<div class=""><br class="">
</div>
<div class="">What kind of negative side effects would I face
by disabling this and letting rtpproxy engage every time? Is
this flag only really useful when you are working with a
hierarchy of SIP proxies in your own environment? My
topology has two equal-priority equal-weight opensips
proxies that serve as clustered load balancer as well as
outbound-proxy for internal freeswitch servers.</div>
<div class=""><br class="">
</div>
<div class="">Thanks</div>
<div class="">W Simon</div>
<br>
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</blockquote>
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