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<tt>Hi Jorge,<br>
<br>
The error generated by udp_send usually translates into a local
iptables blocking the destination or source IP of that message.
Maybe the re-INVITE gets some wrong IPs in the RURI (when routed
via OpenSIPS). You can simply check where OpenSIPS will try to
route the re-INVITE by adding after the loose_route() :<br>
xlog("after loose route ru=<$ru>, du=<$du>\n");<br>
<br>
Check if the du or ru do point to something impossible to route
to.<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 03/27/2018 07:25 PM, Jorge Luis
Ortea wrote:<br>
</div>
<blockquote type="cite"
cite="mid:DB6PR0902MB181634CBEB49878E23829D91DCAC0@DB6PR0902MB1816.eurprd09.prod.outlook.com">
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<div>Hi all,</div>
<div><br>
</div>
<div>I have a OpenSIPS between SBC and Asterisk PBX. This SIP
Proxy relay outbound calls from PBX to SBC.</div>
<div><br>
</div>
<div>Some calls when it is answered SIP Proxy receives from SBC
a REINVITE or INVITE in-dialog, sometimes those REINVITES make
fail SIP Proxy and it doesn't relay.</div>
<div><br>
</div>
<div>- In log:</div>
<div><br>
</div>
<div>ERROR: core: udp_send: sendto (sock,
0xb5ec5464,938,0,0xb5f4950c, 16): Operation not permitted (1)</div>
<div>ERROR: tm: msg_send: udp_send failed</div>
<div>ERROR: tm: t_forward_nonack: sending request failed</div>
<div><br>
</div>
<div><br>
</div>
<div>- In pcap I can see that SIP Proxy does not relay REINVITE
and it returns "477 Send failed (477 / TM)"</div>
<div><br>
</div>
<div><br>
</div>
<div>I have checked REINVITE SIP traces OK and KO but i can not
see any different.</div>
<div><br>
</div>
<div><br>
</div>
<div>What could be the problem?</div>
<div><br>
</div>
<div>Thanks</div>
<div>Regards.</div>
<br>
</div>
<br>
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</pre>
</blockquote>
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