<div dir="ltr">Hey Bogdan-Andrei,<div><br></div><div>Thanks for your feedback. </div><div><br></div><div>To be honest - I don't know! </div><div><br></div><div>I followed some online tutorials and tried to implement "topology_hiding()" after <span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">is_method("INVITE") since the first message sent to Outbound Provider is INVITE. </span></div><div><br></div><div>I never tried topology_hiding_match().</div><div><br></div><div>What is the right way to implement topology_hiding module? My scenario is simple, I'm using the default cfg and making ATA register to OpenSIPS to make Outbound PSTN calls. </div><div><br></div><div>I guess Bootcamp is the answer :-)</div><div><br></div><div><div>Cheers,</div><div>Nitesh</div><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 27, 2022 at 4:02 AM Bogdan-Andrei Iancu <<a href="mailto:bogdan@opensips.org" target="_blank">bogdan@opensips.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<div>
<font face="monospace">Hi Nitesh,<br>
<br>
Do you do topology_hiding_match() for the sequential requests
(instead of the typical loose_route()) ? As it seems you cfg
fails to properly handle the in-dialog / sequential requests.<br>
<br>
Regards,<br>
</font>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="https://www.opensips-solutions.com" target="_blank">https://www.opensips-solutions.com</a>
OpenSIPS Bootcamp 5-16 Dec 2022, online
<a href="https://www.opensips.org/training/OpenSIPS_eBootcamp_2022/" target="_blank">https://www.opensips.org/training/OpenSIPS_eBootcamp_2022/</a></pre>
<div>On 10/26/22 9:05 PM, Nitesh Divecha
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello All,
<div><br>
</div>
<div>I don't know if this is by design or me not implementing
correctly! I'm a newbie to OpenSIPS... </div>
<div><br>
</div>
<div>So I generated a new opensips_residential.cfg file and only
edited it with topology_hiding("UC"); under INVITE. Plus all
the extras to make ATA register successfully and SIP trunk. </div>
<div><br>
</div>
<div>Every time I make a call two INVITE dialogs are created.
One from ATA to OpenSIPS and second one from OpenSIPS to
Outbound Provider. When a PSTN call is answered, the Outbound
Provider sends 200 OK back to OpenSIPS, and OpenSIPS sends
back 200 OK to ATA. Then ATA acknowledges with ACK back to
OpenSIPS BUT OpenSIPS fails to send ACK to the Outbound
Provider. So Outbound Provider sends 200 OK again to OpenSIPS
and OpenSIPS sends 200 OK to ATA then ATA acknowledges with
ACK back to OpenSIPS BUT OpenSIPS fails to send back ACK...
This dance goes on for 30 secs and until Outbound Provider
drops the call due to no ACK. </div>
<div><br>
</div>
<div>On the sngrep it shows that call from ATA to OpenSIPS
"COMPLETED" while OpenSIPS to Outbound Provider "CALL SETUP".</div>
<div><br>
</div>
<div>If I comment out topology_hiding("UC"); then everything
works perfectly and sngrep shows only one INVITE dialog from
ATA to OpenSIPS to Outbound Provider except the Outbound
Provider can see everything that is ATA's IP info, etc...</div>
<div><br>
</div>
<div>Here is my cfg:</div>
<div><br>
</div>
<div>route {</div>
<div>...</div>
<div><span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">if
(dp_translate(10 ,$rU ,$rU) ) {</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
xlog("*** Dial plan translate from source
$avp(src) to $rU ***\n");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
$avp(furi) = "<a href="mailto:sip%3Axxxxxxxxxx@gothamcity.com" target="_blank">sip:xxxxxxxxxx@gothamcity.com</a>";</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
uac_replace_from( , "$avp(furi)");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
#strip(1);</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
if (!do_routing(0)) {</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
send_reply(500,"No PSTN Route found");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
exit;</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
# t_on_branch("change_from");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
route(relay);</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
exit;</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br>
</div>
<div><span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">...</span></div>
<div>}</div>
<div><br>
</div>
<div><span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">route[relay]
{</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
# for INVITEs enable some additional helper routes</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
if (is_method("INVITE")) {</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
# create_dialog();</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
topology_hiding("UC");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
if(remove_hf("User-Agent")){</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
xlog("*** 4. User-Agent found and
removed. ***\n");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
if (isflagset("NAT") &&
has_body("application/sdp")) {</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
rtpproxy_offer("ro");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
t_on_branch("per_branch_ops");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
t_on_reply("handle_nat");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
t_on_failure("missed_call");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
if (isflagset("NAT")) {</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
add_rr_param(";nat=yes");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
if (!t_relay()) {</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
send_reply(500,"Internal Error");</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
}</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
exit;</span><br style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">
<span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">}</span><br>
</div>
<div><span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><br>
</span></div>
<div><span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">My
eyes are sore and my head is spinning... </span><span style="font-size:12px;color:rgb(0,0,0);font-family:Helvetica">Any
help will be highly appreciated... Thanks! </span></div>
<div><font face="Helvetica" color="#000000"><span style="font-size:12px"><br>
</span></font></div>
<div><font face="Helvetica" color="#000000"><span style="font-size:12px">Cheers,</span></font></div>
<div><font face="Helvetica" color="#000000"><span style="font-size:12px">Nitesh</span></font></div>
<div><font face="Helvetica" color="#000000"><span style="font-size:12px"><br>
</span></font></div>
</div>
<br>
<fieldset></fieldset>
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</pre>
</blockquote>
<br>
</div>
</blockquote></div>