24 Jan
2017
24 Jan
'17
8:01 p.m.
Hi,
I have two instances of Kamailio acting as edge proxies. One on the customer side and
one on the agent side.
Like: customer -> proxy1 -> proxy2 -> agent.
Both customer and agent are registered to proxy1/proxy2 via TLS.
However when proxy1 forwards to proxy2, it is using UDP. How can I force it to use
TLS?
Attached is the result of nslookup on the domain: translation.sms-test.cyracom.com.
Thanks
Pranathi
[cid:image001.jpg@01D27631.42773770]
From: sr-users [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Ryan Wagoner
Sent: Tuesday, January 24, 2017 8:26 AM
To: sr-users(a)lists.sip-router.org
Subject: [SR-Users] Asterisk Proxy Multiple Devices / BLF Issues
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.
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.
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.
# Forward REGISTER to Asterisk
route[REGFWD] {
if(!is_method("REGISTER"))
{
return;
}
if($hdr(Expires)==$null)
{
reg_fetch_contacts("location", "$sel(contact.uri)",
"caller");
$var(i) = 0;
$var(j) = 0;
while($var(i) < $(ulc(caller=>count)))
{
if($(ulc(caller=>expires)[$var(i)])!=10)
{
$var(j) = $var(j) + 1;
}
$var(i) = $var(i) + 1;
}
if($var(j)>=1)
{
return;
}
}
$var(rip) = $sel(cfg_get.asterisk.bindip);
$uac_req(method)="REGISTER";
$uac_req(ruri)="sip:" + $var(rip) + ":" +
$sel(cfg_get.asterisk.bindport);
$uac_req(furi)="sip:" + $au + "@" + $var(rip);
$uac_req(turi)="sip:" + $au + "@" + $var(rip);
$uac_req(hdrs)="Contact: <sip:" + $au + "@"
+ $sel(cfg_get.kamailio.bindip)
+ ":" + $sel(cfg_get.kamailio.bindport) +
">\r\n";
if($sel(contact.expires) != $null)
$uac_req(hdrs)= $uac_req(hdrs) + "Expires: " +
$sel(contact.expires) + "\r\n";
else
$uac_req(hdrs)= $uac_req(hdrs) + "Expires: " + $hdr(Expires) +
"\r\n";
uac_req_send();
}
Thanks,
Ryan
