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<p>I pushed a commit to master branch trying to catch the use of
add_local_rport() in the event route and trigger a rebuild of via.
If you have time to test with master branch, let us know if works
or not.</p>
<p>Your solution is ok as well.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 11.11.20 21:28, Jetse Verschuren
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAB8_nh4VmNqffk9G_380nUYhAueOJSfcOtqsFVYFqC4BR9ujqg@mail.gmail.com">
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<div>Thanks for your quick response,</div>
<div><br>
</div>
<div>Unfortunately add_local_rport() didn't work, but
event_route[tm:loal-request] did work. In the end I manually
changed the header (see below), not the prettiest solution,
but it works.</div>
<div><br>
</div>
<div>event_route [tm:local-request] {<br>
xlog("L_INFO", "Routing locally generated $rm to
$ru\n");<br>
<br>
if (is_method("REGISTER")) {<br>
xlog("L_INFO", "Adding rhost parameter to
REGISTER request\n");<br>
# Add rport parameter to Via header<br>
assign_hf_value("Via", "$hdr(Via);rport");<br>
}<br>
}<br>
</div>
<div><br>
</div>
<div>Thanks again,<br>
</div>
<div>
<div>
<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">Jetse<br>
</div>
</div>
</div>
<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Nov 11, 2020 at 9:42
AM Daniel-Constantin Mierla <<a
href="mailto:miconda@gmail.com" moz-do-not-send="true">miconda@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>
<p>Hello,</p>
<p>try to catch uac registrations requests inside
event_route[tm:local-requests] and use add_local_rport()
for them -- not sure it works because I haven't tracked in
the code, given that add_local_rport() was intended for
forwarding incoming requests, but it is a chance it does.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div>On 11.11.20 08:38, Jetse Verschuren wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">
<div dir="ltr">
<div>Hi,</div>
<div><br>
</div>
<div>I'm currently trying to connect Kamailio, running
in docker, to my FritzBox. The FritzBox is the modem
provided by my ISP, with a builtin voip server which
I can use to dial out (basically a PSTN gateway). In
my setup I have a custom router/firewall/NAT between
the FritzBox and the server.<br>
</div>
<div dir="auto">When I connect LinPhone to the
FritzBox, from behind the NAT, it works fine. But
when I use the Kamailio uac remote registration, I
don't get a response. After some investigation with
wireshark, I found that the the SIP response from
the FritzBox comes on the wrong port, and gets
rejected by the NAT. The request comes from port
1025, but the response is sent to port 5060. I
compared the requests from LinPhone and Kamailio,
and combined with some research, found it probably
was the rport option in the VIA header. From what I
read, it basically signals the uas to use the source
port to reply to, instead of the port indicated in
the request, which would be necessary to effectively
go through a NAT.</div>
<div dir="auto">After reading a lot of documentation
(and even parts of the source), I wasn't able to
find an option to enable this option. Is there some
option I completely missed, or is it not possible?
Or am I completely wrong in my "diagnosis"?</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Thanks in advance,</div>
<div>
<div dir="ltr">
<div dir="ltr">Jetse<br>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
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</pre>
</blockquote>
<pre cols="72">--
Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank" moz-do-not-send="true">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank" moz-do-not-send="true">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank" moz-do-not-send="true">www.linkedin.com/in/miconda</a>
Funding: <a href="https://www.paypal.me/dcmierla" target="_blank" moz-do-not-send="true">https://www.paypal.me/dcmierla</a></pre>
</div>
</blockquote>
</div>
</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>
Funding: <a class="moz-txt-link-freetext" href="https://www.paypal.me/dcmierla">https://www.paypal.me/dcmierla</a></pre>
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