<div dir="ltr">Bogdan,<div><br></div><div>Thanks for your feedback. </div><div><br></div><div>After reading the docs and following this tutorial (<a href="https://opensips.org/Documentation/Tutorials-Topology-Hiding">https://opensips.org/Documentation/Tutorials-Topology-Hiding</a>) I finally got it working. Thank you!</div><div><br></div><div>INVITE is clean, topology is hidden and ACK is sent back and forth. Calls are holding good. </div><div><br></div><div>While confirming each ACK and BYE, I noticed Originator's User-Agent is passed on again only on to ACK and BYE. </div><div><br></div><div>I tried to define under: </div><div><br></div><div>route{</div><blockquote style="margin:0 0 0 40px;border:none;padding:0px">if (has_totag()) {<br></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">if ( is_method("ACK") ) {</blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"> if(remove_hf("User-Agent")){<br> xlog("*** has-totag -> ACK User-Agent found and removed on $rm from $si (callid=$ci). ***\n");<br> }<br></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">}</blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">if (is_method("BYE")) {</blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">xlog("*** if is_method(BYE) on $rm from $si (callid=$ci) ***\n");</blockquote></blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">if(remove_hf("User-Agent")){</blockquote></blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">xlog("*** is_method BYE User-Agent found and removed on $rm from $si (callid=$ci). ***\n");<br></blockquote></blockquote></blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px">}</blockquote></blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><blockquote style="margin:0 0 0 40px;border:none;padding:0px"># do accounting even if the transaction fails</blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px">do_accounting("db","failed");</blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px">}</blockquote></blockquote><blockquote style="margin:0 0 0 40px;border:none;padding:0px">}</blockquote><div>}</div><div><br></div><div>But still Originator's User-Agent is passed on to ACK and BYE... Ignore the xlog(""), it is just my way of learning what each line is doing and if getting executed :-).</div><div><br></div><div>Any suggestions? </div><div><br></div><div>Cheers,</div><div>Nitesh</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 27, 2022 at 11:34 AM Bogdan-Andrei Iancu <<a href="mailto:bogdan@opensips.org">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>
Where you have the loose_route() in your script right now, use
topology_hiding_match()<br>
<a href="https://opensips.org/html/docs/modules/3.2.x/topology_hiding.html#func_topology_hiding_match" target="_blank">https://opensips.org/html/docs/modules/3.2.x/topology_hiding.html#func_topology_hiding_match</a><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 10/27/22 3:51 PM, Nitesh Divecha
wrote:<br>
</div>
<blockquote type="cite">
<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>
</blockquote>
<br>
</div>
</blockquote></div>