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<p>Hello,</p>
<p>if you want to send the reply to the source ip/port, not the
address in the top Via header, then do:</p>
<p>force_rport();</p>
<p>sl_send_reply(...);</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 05.07.19 10:27, George
Diamantopoulos wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPcKEYNh_rNq504Fvpv=m_LBz_urLoXCXvH8e_2xQcEKP9iT0Q@mail.gmail.com">
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<div dir="ltr">
<div>Thank you for the reply Karsten!</div>
<div><br>
</div>
<div>I'm afraid the options_reply() function won't work for me.
The reason is that it seems to only handle OPTIONS where the
RURI username is not set, and in my case I need to be able to
handle these cases.</div>
<div><br>
</div>
<div>Moreover, it is not evident from the siputils module
documentation if it will perform NAT traversal on the side of
kamailio, which is my original problem. I'm beginning to think
I can't serve NATted endpoints' requests statelessly and that
I'd have to handle the reply statefully, am I right in
thinking that?</div>
<div><br>
</div>
<div>BR,</div>
<div>George<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, 5 Jul 2019 at 09:37,
Karsten Horsmann <<a href="mailto:khorsmann@gmail.com"
moz-do-not-send="true">khorsmann@gmail.com</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hi George,
<div><br>
</div>
<div>i use something like that (shameless stolen from other
configuration files within request-route).</div>
<div><br>
</div>
<div>Thats for answering options to my internal kamailio.</div>
<div>But Alex Balashov wrote an nice blog poste about
NAT/OPTION Pings </div>
<div>with kamailio: <a
href="http://www.evaristesys.com/blog/server-side-nat-traversal-with-kamailio-the-definitive-guide/"
target="_blank" moz-do-not-send="true">http://www.evaristesys.com/blog/server-side-nat-traversal-with-kamailio-the-definitive-guide/</a></div>
<div><br>
</div>
<div> ### only initial requests (no To tag)<br>
if (is_method("OPTIONS"))<br>
{<br>
if (uri=~<a class="moz-txt-link-rfc2396E" href="sip:.*[@]+.*">"sip:.*[@]+.*"</a>) {<br>
sl_send_reply("501", "Not Implemented");<br>
}<br>
else {<br>
options_reply();<br>
exit;<br>
}<br>
}<br>
</div>
<div><br>
</div>
<div>Cheers Karsten</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Am Do., 4. Juli 2019 um
10:29 Uhr schrieb George Diamantopoulos <<a
href="mailto:georgediam@gmail.com" target="_blank"
moz-do-not-send="true">georgediam@gmail.com</a>>:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Hello all,</div>
<div><br>
</div>
<div>I've been trying to handle OPTIONS statelessly, but
proper handling fails for UACs behind NAT without ALG.
I thought I'd overcome this by setting the $du
pseudovariable, but apparently I'm missing something.
The following does not work:</div>
<div><br>
</div>
<div> if ($Rp == "6050") {<br>
</div>
<div> force_send_socket(udp:<a
href="http://10.10.10.10:6050" target="_blank"
moz-do-not-send="true">10.10.10.10:6050</a>);</div>
<div> }</div>
<div> $du = "sip:" + $si + ":" + $sp;<br>
sl_send_reply("200","OK");</div>
<div> exit;</div>
<div><br>
</div>
<div>I'm now realising that I put this in
request_route() so force_send_socket() and $du have no
use whatsoever, since the request is not forwarded
anywhere. Is this the reason?<br>
</div>
<div><br>
</div>
<div>So the question is, how can I do the following
things for a stateless reply: a) choose a sending
socket for the reply and b) change the destination for
the reply to something other than the URI in the first
Via header.</div>
<div><br>
</div>
<div>Thanks!</div>
<div><br>
</div>
<div>BR,</div>
<div>George<br>
</div>
</div>
_______________________________________________<br>
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</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr"
class="gmail-m_-8609533405661929171gmail_signature">Mit
freundlichen Grüßen<br>
*Karsten Horsmann*<br>
</div>
_______________________________________________<br>
Kamailio (SER) - Users Mailing List<br>
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moz-do-not-send="true">sr-users@lists.kamailio.org</a><br>
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href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
</blockquote>
</div>
<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
Kamailio (SER) - Users Mailing List
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<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></pre>
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