Hello and thank you for
the reply.
The thing is that in
register block I use fix_nated_register but when SER is sending back the 200 OK
reply the routeblock for replies uses fix_nated_contact (I took this out of
the getting started 05a configuration for NAT handling).
route[2] {
#
-----------------------------------------------------------------
# REGISTER Message
Handler
#
----------------------------------------------------------------
log
(1,"route[2]:Register detected \n");
sl_send_reply("100", "Trying");
if
(!search("^Contact:[ ]*\*") &&
client_nat_test("7")) {
log
(1,"route[2]:Caller is nated \n");
setflag(6);
fix_nated_register();
force_rport();
};
if
(!www_authorize("","subscriber")) {
log
(1,"route[2]:Requesting credentials \n");
www_challenge("","0");
break;
};
if (!check_to()) {
sl_send_reply("401", "Unauthorized");
break;
};
consume_credentials();
if
(!save("location")) {
sl_reply_error();
};
}
onreply_route[1] {
log (1,"onreply
route\n");
if ((isflagset(6) ||
isflagset(7)) && (status=~"(180)|(183)|2[0-9][0-9]")) {
if
(!search("^Content-Length:[ ]*0")) {
log (1,"onreply
route:using media proxy\n");
use_media_proxy();
};
};
if
(client_nat_test("1")) {
log (1,"onreply
route:fixing nat contact\n");
fix_nated_contact();
};
KM
From: Greger V. Teigre
[mailto:greger@teigre.com]
Sent: Wednesday, June 28, 2006
12:20 PM
To: Kyriakos
Cc: serusers@lists.iptel.org
Subject: Re: [Serusers] 2
questions regarding user location
Kyriakos wrote:
Hi,
I have two questions
regarding user location.
1) Is there a way of getting the
user location info for manipulating it in ser.cfg ? Something like lookup but
without rewriting anything. Basically what I want to do is check if the caller
and the caller are NATed and belong to a certain same network then I should not
use media proxy. The criterion for the same network would be that both sides
are originating from the same public ip. Thus I would have to
retrieve the “received” field value for the calee and compare
it with the ip contained in the contact header field of the caller in the
INVITE . Perhaps there is also another way to do this?
Not that I know of. However, cvs head has a new type
of route where you can access the actual destination ip and port.
2) What happens when I have multiple
phones registered under one user? How lookup(location) works when I have more
than one ips in location table for the user? During tests I had a UA
behind NAT registering to SER with an ip assigned from the dhcp. After a
while I had the UA assigned a different ip from the dhcp and the Register on
SER under the same user name. The problem was that during registration SER
would respond back to the UA for requesting authorisation credentials but when
it was time to send the 200 OK message for registration , it would send it only
to the previous location of the UA and not the one it sent the REGISTER message
from with of course failure to register because UA would not get the OK from
SER. I noticed that in Contact header of the 200 message there were more than
one return ips (the old one and the new one), Of course as soon as the old
location timed out the registration would go ok.
This has nothing to do with how location works. A new
REGISTER should not NOT hit lookup(location), so you have an error in your
script. You should run fix_nated_register() on the message. By default, SER
will respond to the rcvd address and not Contact if they are different.
g-)
Thanks
KM
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