[Kamailio-Users] add_path_received and OBP problems
Florian Meister
Florian.Meister at teleport.vol.at
Mon Sep 28 08:34:52 CEST 2009
> 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.. at .?.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..... at .@.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.. at .@.. at ..,+.........#>.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.. at .@.. at ..,+.........#>.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.. at .@.. at ..,+.........#>.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.. at .@.. at ..,+.........#>.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..... at .?.\"..,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..... at .@.[...,+..,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.. .. at .@.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..... at .?.[...,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 [$tu]\n");
> > > > # non loose-route, but
> > > stateful ACK; must be an ACK after a 487 or e.g. 404 from upstream
> > > server
> > > > t_relay();
> > > > exit;
> > > > } else {
> > > > xlog("L_ALERT",
> > > "_____ACK_WITHOUT_TRANSACTION [$rm] from [$fu] to [$tu]\n");
> > > > # ACK without matching
> > > transaction ... 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;
> > > > }
> > > > }
> > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Kamailio (OpenSER) - Users mailing list
> > > > Users at lists.kamailio.org
> > > > http://lists.kamailio.org/cgi-bin/mailman/listinfo/users
> > > > http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
> >
> > _______________________________________________
> > Kamailio (OpenSER) - Users mailing list
> > Users at lists.kamailio.org
> > http://lists.kamailio.org/cgi-bin/mailman/listinfo/users
> > http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
More information about the sr-users
mailing list