23 Oct
2007
23 Oct
'07
6:27 p.m.
Hi,
I have Openser 1.1 with Mediaproxy terminating calls to a AS5350 Cisco
gateway.
Everything works fine, except when the PSTN party terminates the call. The
cisco gateway then sends a bye message to the user-agents internal IP
address instead of to the sip proxy's ip address.
Here's an ngrep:
1.2.3.204=cisco gateway
1.2.3.201=openser proxy
62.1.2.122=useragent external ip
192.168.1.10 = useragent internal ip
U 1.2.3.201:5060 -> 192.168.1.10:5060
BYE sip:test@62.1.2.122:5060 SIP/2.0.
Record-Route: <sip:1.2.3.201;lr=on;ftag=E6EFE450-D54>.
Via: SIP/2.0/UDP 1.2.3.201;branch=z9hG4bKebda.e0002794.0.
Via: SIP/2.0/UDP 1.2.3.204:5060;branch=z9hG4bKCC881474.
From: <sip:04766343@192.168.1.10>;tag=E6EFE450-D54.
To: "3227842234" <sip:101002936@sip.server.com>;tag=6b26b6926603729o0.
Date: Tue, 23 Oct 2007 20:36:05 GMT.
Call-ID: 656e89a4-6b2eb629(a)192.168.1.24.
User-Agent: Cisco-SIPGateway/IOS-12.x.
Max-Forwards: 69.
Route:
<sip:192.168.1.10;lr=on;ftag=6b26b6926603729o0;vsf=AAAAAEVVQkRwAwABGHFFUV5SAFpCaWVuc2ludmVzdG1lbnQuY29t>.
Timestamp: 1193171774.
CSeq: 101 BYE.
Reason: Q.850;cause=16.
Content-Length: 0.
So it looks to me like the Cisco is simply ignoring the record-route
header.
Is this a config error in the cisco, or in Openser?
Pertinent bits of the openser config are:
# Record Route Section
if (method=="INVITE" && client_nat_test("3")) {
record_route_preset("1.2.3.201:5060;nat=yes");
} else if (method!="REGISTER") {
record_route();
};
# Call Tear Down Section
if (method=="BYE" || method=="CANCEL") {
end_media_session();
};
# Loose Route Section
if (loose_route()) {
if ((method=="INVITE" || method=="REFER") &&
!has_totag())
{
sl_send_reply("403", "Forbidden");
exit;
};
if (method=="INVITE") {
if (!allow_trusted()) {
if
(!proxy_authorize("","subscriber")) {
proxy_challenge("","0");
exit;
} else if (!check_from()) {
sl_send_reply("403", "Use
From=ID");
exit;
};
consume_credentials();
};
if
(client_nat_test("3")||search("^Route:.*;nat=yes")){
setflag(6);
use_media_proxy();
};
};
route(1);
exit;
};
# Call Type Processing Section
if (!is_uri_host_local()) {
if (is_from_local() || allow_trusted()) {
route(4);
route(1);
} else {
sl_send_reply("403", "Forbidden");
};
exit;
};
if (method=="ACK") {
route(1);
exit;
} else if (method=="CANCEL") {
route(1);
exit;
} else if (method=="INVITE") {
route(3);
exit;
} else if (method=="REGISTER") {
route(2);
exit;
};
route[1] {
# Default Message Handler
t_on_reply("1");
if (!t_relay()) {
if (method=="INVITE" || method=="ACK") {
end_media_session();
};
sl_reply_error();
};
}
route[2] {
# REGISTER Message Handler
# snipped
}
route[3] {
# INVITE Message Handler
if (client_nat_test("3")) {
setflag(7);
force_rport();
fix_nated_contact();
};
if (!allow_trusted()) {
if (!proxy_authorize("","subscriber")) {
proxy_challenge("","0");
exit;
} else if (!check_from()) {
sl_send_reply("403", "Use From=ID");
exit;
};
consume_credentials();
};
lookup("aliases");
if (!is_uri_host_local()) {
route(4);
route(1);
exit;
};
route(4);
route(5);
exit;
};
route[4] {
# NAT Traversal Section
if (isflagset(6) || isflagset(7)) {
if (!isflagset(8)) {
setflag(8);
use_media_proxy();
};
};
}
route[5] {
# PSTN Handler Cisco
rewritehost("1.2.3.204");
route(1);
}
failure_route[1] {
end_media_session();
}
onreply_route[1] {
if (status=~"(180)|(183)|2[0-9][0-9]") {
if (!search("^Content-Length:[ ]*0")) {
use_media_proxy();
};
};
if (client_nat_test("1")) {
fix_nated_contact();
};
}
Thanks for any help,
Richard