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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> I have two instances of Kamailio acting as edge proxies. One on the customer side and one on the agent side.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Like: customer -> proxy1 -> proxy2 -> agent.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Both customer and agent are registered to proxy1/proxy2 via TLS.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> However when proxy1 forwards to proxy2, it is using UDP. How can I force it to use TLS?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Attached is the result of nslookup on the domain: translation.sms-test.cyracom.com.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Pranathi<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><img width="612" height="478" id="Picture_x0020_1" src="cid:image001.jpg@01D27631.42773770"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> sr-users [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>Ryan Wagoner<br>
<b>Sent:</b> Tuesday, January 24, 2017 8:26 AM<br>
<b>To:</b> sr-users@lists.sip-router.org<br>
<b>Subject:</b> [SR-Users] Asterisk Proxy Multiple Devices / BLF Issues<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I'm following the latest Kamailio and Asterisk Realtime guide to offload registrations from my FreePBX / Asterisk setup and possibly load balance down the road. I'm running Kamailio 4.4.5 and Asterisk 11.6-cert15. I realize FreePBX isn't
realtime and will work around that with a database view, etc.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I was excited to see Kamailio will handle multiple devices registering to the same device/extension and placing / receiving calls works. I did run into an issue when any device unregisters Kamailio always forwards the register with expires
0 to Asterisk. To workaround this I modified the route[REGFWD] and added the if($hdr(Expires)==$null) chunk of code. I wanted to use caller->count, but ran into stale contact records with expires set to deleted. I then tried enumerating the contacts, but don't
understand why ulc(caller->expires) is 10 when kamctl ul show shows expires deleted. The code below works, but I was hoping for an explanation of the expires = 10 or if there was a better way to handle this scenario.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Additionally I enabled presence (WITH_PRESENCE) but Kamailio responds 489 bad event for subscribe requests from devices registered to it. I was hoping it would proxy these to Asterisk for BLF support. If somebody could point me in the right
direction it would be appreciated.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"># Forward REGISTER to Asterisk<o:p></o:p></p>
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<p class="MsoNormal">route[REGFWD] {<o:p></o:p></p>
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<p class="MsoNormal"> if(!is_method("REGISTER"))<o:p></o:p></p>
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<p class="MsoNormal"> {<o:p></o:p></p>
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<p class="MsoNormal"> return;<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> if($hdr(Expires)==$null)<o:p></o:p></p>
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<p class="MsoNormal"> {<o:p></o:p></p>
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<p class="MsoNormal"> reg_fetch_contacts("location", "$sel(contact.uri)", "caller");<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> $var(i) = 0;<o:p></o:p></p>
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<p class="MsoNormal"> $var(j) = 0;<o:p></o:p></p>
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<p class="MsoNormal"> while($var(i) < $(ulc(caller=>count)))<o:p></o:p></p>
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<p class="MsoNormal"> {<o:p></o:p></p>
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<p class="MsoNormal"> if($(ulc(caller=>expires)[$var(i)])!=10)<o:p></o:p></p>
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<p class="MsoNormal"> {<o:p></o:p></p>
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<p class="MsoNormal"> $var(j) = $var(j) + 1;<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> $var(i) = $var(i) + 1;<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> if($var(j)>=1)<o:p></o:p></p>
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<p class="MsoNormal"> {<o:p></o:p></p>
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<p class="MsoNormal"> return;<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> $var(rip) = $sel(cfg_get.asterisk.bindip);<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(method)="REGISTER";<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(ruri)="sip:" + $var(rip) + ":" + $sel(cfg_get.asterisk.bindport);<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(furi)="sip:" + $au + "@" + $var(rip);<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(turi)="sip:" + $au + "@" + $var(rip);<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(hdrs)="Contact: <sip:" + $au + "@"<o:p></o:p></p>
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<p class="MsoNormal"> + $sel(cfg_get.kamailio.bindip)<o:p></o:p></p>
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<p class="MsoNormal"> + ":" + $sel(cfg_get.kamailio.bindport) + ">\r\n";<o:p></o:p></p>
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<p class="MsoNormal"> if($sel(contact.expires) != $null)<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + $sel(contact.expires) + "\r\n";<o:p></o:p></p>
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<p class="MsoNormal"> else<o:p></o:p></p>
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<p class="MsoNormal"> $uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + $hdr(Expires) + "\r\n";<o:p></o:p></p>
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<p class="MsoNormal"> uac_req_send();<o:p></o:p></p>
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<p class="MsoNormal">}<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Ryan<o:p></o:p></p>
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