as thought invite messages are routed now correctly to the public IP of the UAC.
Now I have another problem. ACK and BYE messages have the same problem. The loadbalancer(s) are trying to send the messages to the private IP, which of course does not work.
I thought at least the BYE message is an in-dialog-request, and therefore it should work ? Do you have an idea how to route this kind of messages correctly through the LB to the UAC's ?
Hi,
I've solved the problem. No need to answer :D
Best regards, Florian
The request sent out by the LB still has the Route header. This indicates that either:
- the load balancer does not detect the domain/IP in the Route
header
as an internal one (alias=....)
- the loose_route function is not called in the LB.
Many thanks ! I did not call loose_route in the LB, I think that will solve it.
Best regards,
Florian
Florian Meister schrieb:
Hi,
I'm trying to set up a HA-OBP for both natted and non-natted
users.
Atm my setup looks like that:
[UAC] <---> (NAT) <---> [LB] <---> [REG + Proxy] <---> [PSTN GW]
At the loadbalancer I use add_path and add_path_received to add a
path-header to the request sent to the Registrar. (Of course only
for
register requests). I use a few parameters for telling the
registrar
module to use the path header. When looking in the mysql-db I can
see
the correct value in the path-field in the location-table.
When getting an invite from the PSTN gateway for one of the UAC's
the
Proxy is adding a route-header according to the path-value in the mysql. That seems also correct. Now to my problem:
The loadbalancer is sending out the INVITE to the private-ip, not
to
the public-nat-ip of the UAC. It seems that the received-parameter
in
the Route-header is somehow ignored. I am using the use_received parameter in the loadbalancer, but it does not work.
In the following you can find the SIP trace (made on the
loadbalancer) and the loadbalancer config, since I think there is
the
problem.
Thanks,
Florian
Here is the SIP-trace of the INVITE:
09:49:07.785294 IP [Proxy+Registrar].5060 > [Loadbalancer].5060:
SIP,
length: 1101
E..i..@.?.Yb..,F..,+.....U.BINVITE sip:435572949012@[PRIVATE IP
of
UAC];user=phone SIP/2.0
Record-Route: sip:[Proxy+Registrar];lr;ftag=as33339e2e Via: SIP/2.0/UDP [Proxy+Registrar];branch=z9hG4bK3d51.bf3830b5.0 Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
Route: <sip:[Loadbalancer];lr;received="sip:[PUBLIC NAT IP of
UAC]:64224">
Max-Forwards: 69 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To: sip:+435572949012@[Proxy+Registrar] Contact: <sip:4366480588134@[PSTN Gateway]> Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.1.5 Date: Fri, 25 Sep 2009 07:40:26 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY,
INFO
Supported: replaces, timer Content-Type: application/sdp Content-Length: 312
v=0 o=root 1940822246 1940822246 IN IP4 [PSTN Gateway] s=Asterisk PBX 1.6.1.5 c=IN IP4 [PSTN Gateway] t=0 0 m=audio 19178 RTP/AVP 8 3 0 101 a=rtpmap:8 PCMA/8000 a=rtpmap:3 GSM/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv
09:49:07.786459 IP [Loadbalancer].5060 > [Proxy+Registrar].5060:
SIP,
length: 445
E.....@.@.Z...,+..,F........SIP/2.0 100 Giving a try Via: SIP/2.0/UDP
[Proxy+Registrar];branch=z9hG4bK3d51.bf3830b5.0;rport=5060;received=[Pr
oxy+Registrar]
Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To: sip:+435572949012@[Proxy+Registrar] Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE Server: Kamailio (1.5.1-notls (i386/linux)) Content-Length: 0
09:49:07.786608 IP [Loadbalancer].5060 > [PRIVATE IP of
UAC].5060:
SIP, length: 1307
E..7..@.@..@..,+.........#>.INVITE sip:435572949012@[PRIVATE IP
of
UAC];user=phone SIP/2.0
Record-Route: sip:[Loadbalancer];lr;ftag=as33339e2e;nat=yes Record-Route: sip:[Proxy+Registrar];lr;ftag=as33339e2e Via: SIP/2.0/UDP [Loadbalancer];branch=z9hG4bK3d51.207ba0a5.0 Via: SIP/2.0/UDP
[Proxy+Registrar];rport=5060;received=[Proxy+Registrar];branch=z9hG4bK3
d51.bf3830b5.0
Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
Route: <sip:[Loadbalancer];lr;received="sip:[PUBLIC NAT IP of
UAC]:64224">
Max-Forwards: 68 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To: sip:+435572949012@[Proxy+Registrar] Contact: <sip:4366480588134@[PSTN Gateway]> Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.1.5 Date: Fri, 25 Sep 2009 07:40:26 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY,
INFO
Supported: replaces, timer Content-Type: application/sdp Content-Length: 330 Path: sip:[Loadbalancer];lr
v=0 o=root 1940822246 1940822246 IN IP4 [PSTN Gateway] s=Asterisk PBX 1.6.1.5 c=IN IP4 [Loadbalancer] t=0 0 m=audio 35480 RTP/AVP 8 3 0 101 a=rtpmap:8 PCMA/8000 a=rtpmap:3 GSM/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv a=nortpproxy:yes
09:49:08.258116 IP [Loadbalancer].5060 > [PRIVATE IP of
UAC].5060:
SIP, length: 1307
E..7..@.@..@..,+.........#>.INVITE sip:435572949012@[PRIVATE IP
of
UAC];user=phone SIP/2.0
Record-Route: sip:[Loadbalancer];lr;ftag=as33339e2e;nat=yes Record-Route: sip:[Proxy+Registrar];lr;ftag=as33339e2e Via: SIP/2.0/UDP [Loadbalancer];branch=z9hG4bK3d51.207ba0a5.0 Via: SIP/2.0/UDP
[Proxy+Registrar];rport=5060;received=[Proxy+Registrar];branch=z9hG4bK3
d51.bf3830b5.0
Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
Route: <sip:[Loadbalancer];lr;received="sip:[PUBLIC NAT IP of
UAC]:64224">
Max-Forwards: 68 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To: sip:+435572949012@[Proxy+Registrar] Contact: <sip:4366480588134@[PSTN Gateway]> Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.1.5 Date: Fri, 25 Sep 2009 07:40:26 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY,
INFO
Supported: replaces, timer Content-Type: application/sdp Content-Length: 330 Path: sip:[Loadbalancer];lr
v=0 o=root 1940822246 1940822246 IN IP4 [PSTN Gateway] s=Asterisk PBX 1.6.1.5 c=IN IP4 [Loadbalancer] t=0 0 m=audio 35480 RTP/AVP 8 3 0 101 a=rtpmap:8 PCMA/8000 a=rtpmap:3 GSM/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv a=nortpproxy:yes
09:49:09.258109 IP [Loadbalancer].5060 > [PRIVATE IP of
UAC].5060:
SIP, length: 1307
E..7..@.@..@..,+.........#>.INVITE sip:435572949012@[PRIVATE IP
of
UAC];user=phone SIP/2.0
Record-Route: sip:[Loadbalancer];lr;ftag=as33339e2e;nat=yes Record-Route: sip:[Proxy+Registrar];lr;ftag=as33339e2e Via: SIP/2.0/UDP [Loadbalancer];branch=z9hG4bK3d51.207ba0a5.0 Via: SIP/2.0/UDP
[Proxy+Registrar];rport=5060;received=[Proxy+Registrar];branch=z9hG4bK3
d51.bf3830b5.0
Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
Route: <sip:[Loadbalancer];lr;received="sip:[PUBLIC NAT IP of
UAC]:64224">
Max-Forwards: 68 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To: sip:+435572949012@[Proxy+Registrar] Contact: <sip:4366480588134@[PSTN Gateway]> Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.1.5 Date: Fri, 25 Sep 2009 07:40:26 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY,
INFO
Supported: replaces, timer Content-Type: application/sdp Content-Length: 330 Path: sip:[Loadbalancer];lr
v=0 o=root 1940822246 1940822246 IN IP4 [PSTN Gateway] s=Asterisk PBX 1.6.1.5 c=IN IP4 [Loadbalancer] t=0 0 m=audio 35480 RTP/AVP 8 3 0 101 a=rtpmap:8 PCMA/8000 a=rtpmap:3 GSM/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv a=nortpproxy:yes
09:49:11.258107 IP [Loadbalancer].5060 > [PRIVATE IP of
UAC].5060:
SIP, length: 1307
E..7..@.@..@..,+.........#>.INVITE sip:435572949012@[PRIVATE IP
of
UAC];user=phone SIP/2.0
Record-Route: sip:[Loadbalancer];lr;ftag=as33339e2e;nat=yes Record-Route: sip:[Proxy+Registrar];lr;ftag=as33339e2e Via: SIP/2.0/UDP [Loadbalancer];branch=z9hG4bK3d51.207ba0a5.0 Via: SIP/2.0/UDP
[Proxy+Registrar];rport=5060;received=[Proxy+Registrar];branch=z9hG4bK3
d51.bf3830b5.0
Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
Route: <sip:[Loadbalancer];lr;received="sip:[PUBLIC NAT IP of
UAC]:64224">
Max-Forwards: 68 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To: sip:+435572949012@[Proxy+Registrar] Contact: <sip:4366480588134@[PSTN Gateway]> Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.1.5 Date: Fri, 25 Sep 2009 07:40:26 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY,
INFO
Supported: replaces, timer Content-Type: application/sdp Content-Length: 330 Path: sip:[Loadbalancer];lr
v=0 o=root 1940822246 1940822246 IN IP4 [PSTN Gateway] s=Asterisk PBX 1.6.1.5 c=IN IP4 [Loadbalancer] t=0 0 m=audio 35480 RTP/AVP 8 3 0 101 a=rtpmap:8 PCMA/8000 a=rtpmap:3 GSM/8000 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv a=nortpproxy:yes
09:49:15.023388 IP [Proxy+Registrar].5060 > [Loadbalancer].5060:
SIP,
length: 397
E.....@.?."..,F..,+......a.CANCEL sip:435572949012@[PRIVATE IP
of
UAC];user=phone SIP/2.0
Via: SIP/2.0/UDP [Proxy+Registrar];branch=z9hG4bK3d51.bf3830b5.0 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] To: sip:+435572949012@[Proxy+Registrar] CSeq: 102 CANCEL Max-Forwards: 70 User-Agent: OpenSER (1.3.2-notls (x86_64/linux)) Content-Length: 0
09:49:15.024138 IP [Loadbalancer].5060 > [Proxy+Registrar].5060:
SIP,
length: 413
E.....@.@.[...,+..,F........SIP/2.0 200 canceling Via: SIP/2.0/UDP
[Proxy+Registrar];branch=z9hG4bK3d51.bf3830b5.0;rport=5060;received=[Pr
oxy+Registrar]
From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] To:
sip:+435572949012@[Proxy+Registrar];tag=77b8b5897dbef36847302656cec98
25e-db87
CSeq: 102 CANCEL Server: Kamailio (1.5.1-notls (i386/linux)) Content-Length: 0
09:49:15.024576 IP [Loadbalancer].5060 > [Proxy+Registrar].5060:
SIP,
length: 493
E.. ..@.@.Z...,+..,F........SIP/2.0 487 Request Terminated Via: SIP/2.0/UDP
[Proxy+Registrar];branch=z9hG4bK3d51.bf3830b5.0;rport=5060;received=[Pr
oxy+Registrar]
Via: SIP/2.0/UDP [PSTN
Gateway]:5060;branch=z9hG4bK521a62f5;rport=5060
From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
To:
sip:+435572949012@[Proxy+Registrar];tag=77b8b5897dbef36847302656cec98
25e-db87
Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] CSeq: 102 INVITE Server: Kamailio (1.5.1-notls (i386/linux)) Content-Length: 0
09:49:15.025180 IP [Proxy+Registrar].5060 > [Loadbalancer].5060:
SIP,
length: 433
E.....@.?.[...,F..,+.......MACK sip:435572949012@[PRIVATE IP of
UAC];user=phone SIP/2.0
Via: SIP/2.0/UDP [Proxy+Registrar];branch=z9hG4bK3d51.bf3830b5.0 From: "4366480588134" <sip:4366480588134@[PSTN
Gateway]>;tag=as33339e2e
Call-ID: 067ebe30188025880d0c9f6e78c1b86d@[PSTN Gateway] To:
sip:+435572949012@[Proxy+Registrar];tag=77b8b5897dbef36847302656cec98
25e-db87
CSeq: 102 ACK Max-Forwards: 70 User-Agent: OpenSER (1.3.2-notls (x86_64/linux)) Content-Length: 0
----------------This is the config of my loadbalancer------------
--
--
----:
####### Global Parameters #########
debug=100 log_stderror=yes log_facility=LOG_LOCAL0
fork=no children=4
disable_tcp=yes
port=5060
listen=[Loadbalancer]
####### Modules Section ########
mpath="/usr/lib/kamailio/modules/"
loadmodule "mi_fifo.so" loadmodule "sl.so" loadmodule "tm.so" loadmodule "rr.so" loadmodule "pv.so" loadmodule "maxfwd.so" loadmodule "textops.so" loadmodule "siputils.so" loadmodule "xlog.so" loadmodule "nathelper.so" loadmodule "dispatcher.so" loadmodule "path.so"
# ----------------- setting module-specific parameters ----------
--
--
# ----- mi_fifo params ----- modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")
# ----- rr params ----- # add value to ;lr param to cope with most of the UAs #modparam("rr", "enable_full_lr", 1) # do not append from tag to the RR (no need for this script) #modparam("rr", "append_fromtag", 0)
# -- nathelper modparam("nathelper", "rtpproxy_sock",
"/var/run/rtpproxy/rtpproxy.sock")
modparam("nathelper", "received_avp", "$avp(i:80)")
# -- dispatcher params -- modparam("dispatcher", "list_file",
"/etc/kamailio/dispatcher.list")
# -- path params -- modparam("path", "use_received", 1)
####### Routing Logic ########
# main request routing logic
route{ xlog("L_ALERT", "[$rm] from [$fu] to [$tu]\n"); if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); exit; }
# NAT detection route(4); if (has_totag()) { xlog("L_ALERT", "_____HASTOTAG [$rm] from [$fu]to
[$tu]\n");
# sequential request withing a dialog should # take the path determined by record-routing if (loose_route()) { xlog("L_ALERT", "_____LOOSE_ROUTE [$rm]from
[$fu] to [$tu]\n");
t_relay(); exit; } else { if ( is_method("ACK") ) { if ( t_check_trans() ) { xlog("L_ALERT","_____NON-
LOOSE, STATEFUL-ACK [$rm] from [$fu] to [$tu]\n");
# non loose-route, butstateful ACK; must be an ACK after a 487 or e.g. 404 from upstream server
t_relay(); exit; } else { xlog("L_ALERT","_____ACK_WITHOUT_TRANSACTION [$rm] from [$fu] to [$tu]\n");
# ACK without matchingtransaction ... ignore and discard.\n");
exit; } } sl_send_reply("404","Not here"); } exit; } #initial requests # CANCEL processing if (is_method("CANCEL")) { if (t_check_trans()) t_relay(); exit; } t_check_trans(); # record routing if (!is_method("REGISTER|MESSAGE")) xlog("L_ALERT", "_____RECORD_ROUTING [$rm] from[$fu]
to [$tu]\n");
record_route(); #if ($rU==NULL) { # # request with no Username in RURI # sl_send_reply("484","Address Incomplete"); # exit; #} if (check_route_param("nat=yes")) { setbflag(6); } #if (isflagset(5) || isbflagset(6)) { route(5); #} /* example how to enable some additional event routes */ if (is_method("INVITE")) { t_on_reply("1"); t_on_failure("1"); } if(!ds_is_from_list()) { ds_select_domain("0", "0"); } if (!t_relay()) { sl_reply_error(); }}
# Caller NAT detection route route[4]{ force_rport(); if (nat_uac_test("19")) { if (method=="REGISTER") { add_path_received(); fix_nated_register(); } else { fix_nated_contact(); } setflag(5); } else { add_path(); } return; }
# RTPProxy control route[5] { if (is_method("BYE")) { unforce_rtp_proxy(); } else if (is_method("INVITE")){ force_rtp_proxy(); } if (!has_totag()) add_rr_param(";nat=yes"); return; }
onreply_route[1] { xdbg("incoming reply\n");
#if ((isflagset(5) || isbflagset(6)) &&status=~"(183)|(2[0-
9][0-9])") {
if (status=~"(183)|(2[0-9][0-9])") { force_rtp_proxy(); } if (isbflagset(6)) { fix_nated_contact(); }}
failure_route[1] { #if (is_method("INVITE") && (isbflagset(6) ||
isflagset(5)))
{
if (is_method("INVITE")) { unforce_rtp_proxy(); } if (t_was_cancelled()) { exit; }}
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