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Push Notifications
by Nahum Nir 18 Jul '16

18 Jul '16

Hello, Found the presentation about asynch push. Is there an example cfg file? Thanks, Nir

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Custom header on reply is removed on t_relay
by David Wilson 18 Jul '16

18 Jul '16

Hello All, We have a Kamailio proxy (P1) and a custom client (A). Calls are working reliably with A communicating directly with P1. When A sends INVITE to P1, in some cases, we insert a custom header ‘X-Routing’ in the reply. Now, testing with a new, additional proxy (P2) between these two: A -> P2 -> P1 A sends INVITE via P2 to P1, P1 replies include X-Routing header field (confirmed by logging message buffer received from P1 by P2). However, the reply relayed from P2 to A does not contain the custom header. P2’s reply_route block only contains logging code and I’ve checked for calls to remove_hf. I can’t find documentation or code to explain why the header is omitted. Is there a module config parameter that I can set to preserve custom headers? Any suggestions welcome! Regards, Dave Wilson.

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Rx Interface connected, get error code: SIP/2.0 403 Forbidden - You must register first with a S-CSCF
by Kristian Martens 18 Jul '16

18 Jul '16

Hi, I have installed Kamailio version 4.4.1. Everything works just fine. If I connect a PCRF via Rx to the P-CSCF, the registration still runs through as expected but the subsequent SUBSCRIBE is rejected with "403 Forbidden - You must register first with a S-CSCF" error cause or is simply ignored (see attached wireshark traces). And, if I disconnect Rx and restart the P-CSCF, the "forbidden" problem still persists. (But I can work around this by cleaning up the P-CSCF database.) Any suggestions how I could get Rx working? Thanks, Kristian

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kamailio-dbg package
by Laura García Pérez 18 Jul '16

18 Jul '16

Is it possible to install kamailio-dbg in CentOS? Thanks, Laura García Pérez www.logslie.com <http://www.logslie.com/> +34680923532 +12602069698

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Conditionally calling TOPOS
by Nathan Ward 18 Jul '16

18 Jul '16

Hi, I think it make sense to put this topic in a seperate message, though this is very much the same scenario mentioned here: http://lists.sip-router.org/pipermail/sr-users/2016-July/093864.html I would like the ability initiate topology hiding only for certain messages - i.e. on inbound calls, I would like my Kamailio ‘SBC' to retain the routing information for inbound requests, but strip it for outgoing requests - so that I can see the full path a call has taken to reach and then traverse my network all the way to an egress SBC but then this is all stripped before forwarding the call to a 3rd party (i.e. customer, or carrier). I note that this isn’t possible at present, but I’d like to take a stab at the code, perhaps designating ‘trusted’ IPs for which topology hiding doesn’t take place. Before I embark on this, is this something that would be considered useful, or is there a good reason to have full topology hiding that I’m missing? -- Nathan Ward

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TOPOS - REGISTER
by Nathan Ward 18 Jul '16

18 Jul '16

Hi all, I’m doing some testing using Kamailio to do some lightweight SBC type functions. We have considered OpenSIPs as well as it has built in b2bua bits, but having chosen Kamailio for other parts of our network it makes sense to stick with one piece of software I think. Luckily, we only need (want) topology hiding, and don’t need other b2bua things. I have a server in the middle of our network sending registrations out to a 3rd party network for a number of lines, using Kamailio+uacreg. This works great. It sends these registrations through an SBC, also running Kamailio. I do this by setting the proxy column of the uacreg table to the SBC’s inside address. On the SBC, I rewrite the Contact header, so calls come in to the SBC. I am running topos on the SBC, and would like to be able to do topology hiding for the outgoing REGISTER. I note that there is code in tps_skip_msg to specifically avoid topology hiding for REGISTER and PUBLISH messages. Is there a SIP reason for this, or is this just a part of the code that hasn’t been finished yet or wasn’t needed by the author, so it’s been excluded? I note that topoh is the same, with a th_skip_msg function that has I think identical code, so no doubt the same reasoning is applied there. This is a very minor issue, but I’d like to understand the reasoning, and contribute code if the reason is code rather than SIP. -- Nathan Ward

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RTPProxy Issues
by TEG AMJG 18 Jul '16

18 Jul '16

Dear list I am quite new to Kamailio and i have been able to solve some NAT Traversal issues with symmetric SIP+RTP putting kamailio+rtpproxy behind NAT, i am also load balancing some asterisk boxes for transcoding and some other services like voicemail. Also i am using SIPp for load testing Now the question is that, while everything is working great with NAT (even when i am using SIPp for testing with low load) when i am about to test it with more than 150 calls or something i am starting to get the following error: *kamailio[34549]: ERROR: rtpproxy [rtpproxy.c:2735]: force_rtp_proxy(): incorrect port 0 in reply from rtp proxy* I have been trying to look at some SIP packets when the error starts and i am not seeing anything out of the normal (while being quite difficult to debug when having so many concurrent calls at SIP level) My configuration doesnt have anything new, the only thing is that, because Kamailio is behind NAT i used some ideas from some other users and debates from this same mailing list: *# RTPProxy control* *route[NATMANAGE] {* *#!ifdef WITH_NAT* * if(is_request()) {* * if(has_totag()) {* * if(check_route_param("nat=yes")) {* * setbflag(FLB_NATB);* * }* * }* * }* * if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB)))* * return;* * if(!route(FROMASTERISK)){* * force_send_socket(10.0.1.207);* * rtpproxy_manage("rw","10.0.1.206");* * }else{* * force_send_socket(10.0.1.206);* * rtpproxy_manage("rw","10.0.5.203");* * }* * if (is_request()) {* * if (!has_totag()) {* * add_rr_param(";nat=yes");* * }* * }* * if (is_reply()) {* * if(isbflagset(FLB_NATB)) {* * fix_nated_contact();* * }* *#!endif* * return;* *}* This solution is based of someone's idea from this mailing list: http://lists.sip-router.org/pipermail/sr-users/2013-January/076254.html As you can see in my configuration, my "public network" is really private network so i tweak the NATDETECT route to not include RFC1918 networks as part of the detection *# Caller NAT detection route* *route[NATDETECT] {* *#!ifdef WITH_NAT* *if (nat_uac_test("1")) {* * if (nat_uac_test("18")) {* * force_rport();* * if (is_method("REGISTER")) {* * fix_nated_register();* * } else {* * fix_nated_contact();* * }* * setflag(FLT_NATS);* * return;* * }* * }* *#!endif* * return;* *}* Also i would like to know how may i use RTPProxy logs?, i tried to configure it like this: /etc/rsyslog.conf *# Kamailio logging* *local0.* -/var/log/kamailio.log* *#RTPProxy logging* *local3.* /var/log/rtpproxy.log* /etc/sysconfig/rtpproxy *OPTIONS="-l 10.0.1.206 -A 10.0.5.203 -s udp:127.0.0.1:7722 <http://127.0.0.1:7722> -r /var/lib/rtpproxy/sessions -d DBUG:LOG_LOCAL3 -m 35000 -M 55000 -F"* I cannot see anyhing in the logs Thank you very much Alejandro

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Questions
by francisco rodriguez 15 Jul '16

15 Jul '16

Hello ; I have the sip account with you, but to put it to work in a team asks me some data. you can tell me what they are. my account is sip: masterlaradio(a)iptel.org I request the following information IP SERVER :? SERVER USER? USERNAME? STUN DOMAIN? DNS SERVER? thanks for your attention and collaboration Francisco Rodriguez Enviado desde Correo<https://go.microsoft.com/fwlink/?LinkId=550986> para Windows 10

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Websocket Path Issues
by Colin Morelli 15 Jul '16

15 Jul '16

Hey all, I'm using Kamailio as an outbound edge proxy for websocket connections. When my registrar calls out to Kamailio to forward to a websocket connection that has since been killed, rather than just entering the failure branch, it throws a few errors: 5(24) WARNING: <core> [msg_translator.c:2760]: via_builder(): TCP/TLS connection (id: 0) for WebSocket could not be found 5(24) ERROR: <core> [msg_translator.c:1978]: build_req_buf_from_sip_req(): could not create Via header 5(24) ERROR: tm [t_fwd.c:476]: prepare_new_uac(): could not build request 5(24) ERROR: tm [t_fwd.c:1737]: t_forward_nonack(): ERROR: t_forward_nonack: failure to add branches 5(24) ERROR: sl [sl_funcs.c:363]: sl_reply_error(): ERROR: sl_reply_error used: No error (2/SL) Ultimately this means the proxy gets a 500 rather than a 430 flow failed, and the registration sits around in the proxy when it should be removed. Am I missing something obvious to get this behavior? Best, Colin

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Re: [SR-Users] Determining if request is from a local domain
by Shane Harrison 15 Jul '16

15 Jul '16

Hi all, Solved! As is often the case, after working all morning on the problem, after posting I discovered my error. I noticed that I hadn't included in my post the "alias=" command. It was indeed in my script but I had used aws-rcsstg.voip.systems instead of aws-rcsstg.vvoip.systems ! I don't know how many times I have stared at that but I guess you often see what you want to see...... Apologies for wasting your time. Kind regards Shane > -----Original Message----- > From: Shane Harrison > Sent: Wednesday, 13 July 2016 2:48 p.m. > To: 'sr-users(a)lists.sip-router.org' > Subject: Determining if request is from a local domain > > Hi all, > > From previous posts my understanding is that RURI's are matched against > reverse DNS lookup of listen addresses and aliases set via the "alias=" > parameter in the config file (assuming the domain module isn't being used). > However I am having difficulty in getting this to work. From looking at the > code and the log file, it appears to me as if the alias isn't making it into the list > of hosts that is checked against for some reason. > > Kamailio proxy is behind a loadbalancer (Kamailio dispatcher) and proxy is > trying to relay the request because it doesn't recognise it as a local domain. > Any thoughts on where my error is would be appreciated. > > Relevant CFG file section - note that > RCS_LB_PUBLIC_IP:RCS_LB_PUBLIC_PORT is 52.64.xxx.221 :5061 > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~~~~~~~~~~~~~ > auto_aliases=yes > > # aliases and listening settings for sipproxy alias="aws-rcsstg.voip.systems" > listen=tcp:10.4.1.62:5060 advertise > RCS_LB_PUBLIC_IP:RCS_LB_PUBLIC_PORT > > > My request is a REGISTER as follows: > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > received message > REGISTER call-id b2ed2fdd(a)192.168.148.30 received from 10.4.1.62 raw msg > REGISTER sip:aws-rcsstg.vvoip.systems;transport=tls SIP/2.0 > Via: SIP/2.0/TCP > 52.64.xxx.221:5060;branch=z9hG4bKa691.5fd57c2a783d3a5d7f6f80fcd0c815d > 6.0;i=d91 > Via: SIP/2.0/TLS > 192.168.148.30:5061;received=203.171.46.54;rport=64515;branch=z9hG4bK68 > b886fd00518;keep > From: <sip:+6421608919@aws- > rcsstg.vvoip.systems;transport=tls>;tag=4af7e7d8 > To: <sip:+6421608919@aws-rcsstg.vvoip.systems;transport=tls> > Call-ID: b2ed2fdd(a)192.168.148.30 > CSeq: 1995005270 REGISTER > Max-Forwards: 69 > Contact: > <sip:+6421608919@203.171.46.54:64515;transport=tls>;expires=240;+sip.inst > ance="<urn:uuid:23624e3d-c98e-3b76-9acb-5499202e2f8d>";reg- > id=1;+g.3gpp.iari-ref="urn%3Aurn-7%3A3gpp- > application.ims.iari.rcs.sm";+g.oma.sip-im;+g.3gpp.iari-ref="urn%3Aurn- > 7%3A3gpp-application.ims.iari.gsma-is";+g.3gpp.cs-voice;+g.3gpp.iari- > ref="urn%3Aurn-7%3A3gpp-application.ims.iari.gsma-vs";+g.3gpp.iari- > ref="urn%3Aurn-7%3A3gpp-application.ims.iari.rcse.sp";+g.3gpp.icsi- > ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel";video > User-Agent: FlowTalk-WindowsCommunicator_5.x > P-Access-Network-Info: IEEE-802.3 > Allow: > INVITE,ACK,BYE,CANCEL,REFER,NOTIFY,OPTIONS,PRACK,UPDATE,INFO,MESS > AGE,SUBSCRIBE,PUBLISH > Allow-Events: refer, presence > Supported: 100rel, replaces, timer, gruu, join, histinfo, path > Date: Wed, 13 Jul 2016 00:27:39 GMT > Content-Length: 0 > Path: > <sip:52.64.xxx.221:5060;transport=tcp;lr;received=sip:203.171.46.54:64515%3 > Btransport%3Dtls> > > > Relevant section of the log where if( !uri == me ) is tested: > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Jul 13 03:18:06 aws-rcsstg-sip-proxy-i-b879b469 /usr/sbin/kamailio[9367]: > ERROR: *** cfgtrace:request_route=[SIPOUT] > c=[//etc/kamailio/kamailio.cfg] l=1052 a=16 n=if Jul 13 03:18:06 aws-rcsstg- > sip-proxy-i-b879b469 /usr/sbin/kamailio[9367]: DEBUG: <core> > [socket_info.c:583]: grep_sock_info(): grep_sock_info - checking if host==us: > 24==9 && [aws-rcsstg.vvoip.systems] == [10.4.1.62] Jul 13 03:18:06 aws- > rcsstg-sip-proxy-i-b879b469 /usr/sbin/kamailio[9367]: DEBUG: <core> > [socket_info.c:587]: grep_sock_info(): grep_sock_info - checking if port 5060 > (advertise 5061) matches port 5061 Jul 13 03:18:06 aws-rcsstg-sip-proxy-i- > b879b469 /usr/sbin/kamailio[9367]: DEBUG: <core> [socket_info.c:603]: > grep_sock_info(): grep_sock_info - checking advertise if host==us: 24==13 > && [aws-rcsstg.vvoip.systems] == [52.64.xxx.221] Jul 13 03:18:06 aws-rcsstg- > sip-proxy-i-b879b469 /usr/sbin/kamailio[9367]: DEBUG: <core> > [forward.c:448]: check_self(): check_self: host != me > > > Kind regards > > Shane Harrison > Senior Software Engineer > > Imagination Technologies NZ Limited > Level 2 > 1 Market Grove > Lower Hutt, 5010 > New Zealand > > PO Box 30-449 > Lower Hutt, 5040 > New Zealand > > Phone: +64 4 890-3681 ext 3361 >

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