<div dir="ltr">Hello,<div><br></div><div>I captured a tcpdump on this scenario and saw that in fact, the siptrace is sending the 403 Forbidden towards Homer.</div><div>The issue is that for this local reply, Kamailio instead of using the private interface as it does for the other messages, is choosing the public interface, so the local reply doesn't arrive on heplify side.</div><div><br></div><div>After forcing the socket with send_sock_addr, the reply appears on Homer.</div><div>modparam("siptrace", "send_sock_addr", "sip:x.x.x.x:xxxx")<br></div><div><br></div><div>From the documentation, I saw that if we don't use the send_sock_addr Kamailio will choose the interface, but shouldn't it choose always the same interface?</div><div><br></div><div>Thanks for the help finding the issue.</div><div>Regards,</div><div>Tiago</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com">miconda@gmail.com</a>> escreveu no dia segunda, 3/05/2021 à(s) 21:58:<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>logs indicate that the siptrace is engaged when the reply is sent
out:</p>
<p>May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: siptrace
[siptrace_hep.c:496]: pipport2su(): the port string is 5060<br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: siptrace
[siptrace_hep.c:496]: pipport2su(): the port string is 58530<br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: <core>
[core/proxy.c:264]: mk_proxy(): doing DNS lookup...<br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: siptrace
[siptrace_hep.c:184]: trace_send_hep3_duplicate(): setting up the
socket_info<br>
</p>
<p>Can you watch the network traffic with ngrep/wireshark and check
if the reply is actually sent over?</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div>On 03.05.21 19:16, pwerspire wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello,
<div><br>
</div>
<div>So I tested with the following configuration: </div>
<div><br>
</div>
<div>modparam("siptrace", "duplicate_uri", <a>"sip:x.x.x.x:9060"</a>)<br>
modparam("siptrace", "hep_mode_on", 1)<br>
modparam("siptrace", "trace_to_database", 0)<br>
#modparam("siptrace", "trace_flag", FLT_SIPTRACE)<br>
modparam("siptrace", "trace_on", 1)<br>
modparam("siptrace", "trace_mode", 1)<br>
modparam("siptrace", "hep_version", 3)<br>
modparam("siptrace", "hep_capture_id", 2040)<br>
</div>
<div><br>
</div>
<div>I can see this on the logs: </div>
<div><br>
</div>
<div>May 03 15:40:30 kamailio[6259]: ) 5(6267) DEBUG: sl
[sl_funcs.c:554]: sl_run_callbacks(): execute callback for
event type 1<br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: siptrace
[siptrace.c:1842]: trace_sl_onreply_out(): trace off...<br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: <core>
[core/parser/msg_parser.c:620]: parse_msg(): SIP Reply
(status):<br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: <core>
[core/parser/msg_parser.c:622]: parse_msg(): version:
<SIP/2.0><br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: <core>
[core/parser/msg_parser.c:624]: parse_msg(): status:
<403><br>
May 03 15:40:30 kamailio[6259]: 5(6267) DEBUG: <core>
[core/parser/msg_parser.c:626]: parse_msg(): reason:
<Forbidden><br>
</div>
<div><br>
</div>
<div>In attach is the log, I changed some of the values to mask
the original values.</div>
<div><br>
</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Regards,</div>
<div>Tiago</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>>
escreveu no dia segunda, 3/05/2021 à(s) 17:25:<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>local replies should be captured with trace_mode=1. Run
with debug=3 in kamailio.cfg and attach all log/debug
messages printed by Kamailio for such case (from the
INVITE to the ACK processing).</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div>On 03.05.21 16:31, pwerspire wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi,
<div><br>
</div>
<div>Thanks for your reply.</div>
<div><br>
</div>
<div>We had the modparam("siptrace", "trace_mode", 1)
but the issue with that is that local error answers
from kamailio doesn't appear.</div>
<div><br>
</div>
<div>For example, when Kamailio receives the INVITE and
replies with a forbidden, the Invite and the ACK is
there but the Forbidden is not.</div>
<div><br>
</div>
<div>So with "trace_mode" 1 , everything works fine
except this messages missing and this was the problem
that we tried to solve messing around with the
functions and flags.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Tiago</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Daniel-Constantin
Mierla <<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>>
escreveu no dia segunda, 3/05/2021 à(s) 15:39:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
On 03.05.21 11:02, pwer spire wrote:<br>
> Hi,<br>
><br>
> Any one have some idea about this? Or how it
should be configured in order to still have the
original response received in kamailio instead of the
mapping one?<br>
<br>
If you want all the traffic mirrored, then look at:<br>
<br>
*<br>
<a href="https://www.kamailio.org/docs/modules/stable/modules/siptrace.html#siptrace.p.trace_mode" rel="noreferrer" target="_blank">https://www.kamailio.org/docs/modules/stable/modules/siptrace.html#siptrace.p.trace_mode</a><br>
<br>
It is simpler that the use of functions and flags to
select what<br>
messages should be mirrored.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
-- <br>
Daniel-Constantin Mierla -- <a href="http://www.asipto.com" rel="noreferrer" target="_blank">www.asipto.com</a><br>
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Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
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Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
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