sr-users May 2014

sr-users@lists.kamailio.org

96 participants
156 discussions

Prevent missing BYE request
by Igor Potjevlesch 15 May '14

15 May '14

Hello, Here is the context: I use to terminate outgoing calls to a PSTN gateway. The gateway is able to detect asymmetric RTP on IP side and then ended the call after a configurable timer if asymmetric RTP is detected. I'm working on the integration of a VoIP Trunk with a wholesaler and I'm wondering how this behaviour can be transposed on full IP interconnection. The first step will be to use Kamailio as an SBC and start the RTPProxy for each session terminated on this wholesaler. Is there a similar mechanism on RTPProxy sides that can detect this particular call-flow and hang up the call? Thanks for your suggestions. Regards, Igor.

2 2

Wrong Via and RR header added in UDP2TCP scenario
by Sebastian Damm 15 May '14

15 May '14

Hi, we have a setup, where we have a TCP loadbalancer, which converts the requests from attached devices using TCP into UDP for the rest of our setup. This loadbalancer has a service IP, and additionally the host IP, it listens to different addresses. Example: Host IP is: 1.1.1.1 Service IP is: 2.2.2.2 Device is at: 5.5.5.5 Proxy: 9.9.9.9 Gateway: 8.8.8.8 Kamailio listen IPs: tcp:1.1.1.1:15060 (used just for XMLRPC querys) tcp:2.2.2.2:5060 udp:1.1.1.1:5062 udp:2.2.2.2:5060 The Host IP should only be used for some management functions, not for routing. We've had the problem at first, that when converting from TCP to UDP, Kamailio did not use the same IP but instead the first configured one. I got rid of that by using force_send_socket. Now I'm calling a registered device. Since the registered device is saved with a path, the request comes in via UDP with the following parameters: U 2014/05/13 16:15:31.225132 9.9.9.9:5060 -> 2.2.2.2:5060 INVITE sip:user@5.5.5.5:5060;uniq=F373C9746E87D6271688292199F83;transport=tcp SIP/2.0 Record-Route: <sip:9.9.9.9;lr> Record-Route: <sip:2.2.2.2;lr;ftag=as458ff869> Via: SIP/2.0/UDP 9.9.9.9;branch=z9hG4bK17ec.ea7c017baba4072b27c5b0b9daa23346.0 Route: <sip:2.2.2.2;lr;received=sip:5.5.5.5:4956%3Btransport%3Dtcp> Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bK17ec.7db07192e57ae94739d5c3e1444d7ef3.0 Via: SIP/2.0/UDP 8.8.8.8:5060;branch=z9hG4bK5ba05442 Up until now everything looks good. But this is what the loadbalancer sends out: T 2014/05/13 16:15:31.226987 2.2.2.2:5060 -> 5.5.5.5:4956 [A] INVITE sip:user@5.5.5.5:5060;uniq=F373C9746E87D6271688292199F83;transport=tcp SIP/2.0 Record-Route: <sip:1.1.1.1:15060;transport=tcp;r2=on;lr;ftag=as458ff869> Record-Route: <sip:2.2.2.2;r2=on;lr;ftag=as458ff869> Record-Route: <sip:9.9.9.9;lr> Record-Route: <sip:2.2.2.2;lr;ftag=as458ff869> Via: SIP/2.0/TCP 1.1.1.1:15060 ;branch=z9hG4bK17ec.99e285f5a9e03594d3f7ae6048d1868d.0 Via: SIP/2.0/UDP 9.9.9.9;branch=z9hG4bK17ec.ea7c017baba4072b27c5b0b9daa23346.0 Via: SIP/2.0/UDP 2.2.2.2;branch=z9hG4bK17ec.7db07192e57ae94739d5c3e1444d7ef3.0 Via: SIP/2.0/UDP 8.8.8.8:5060;branch=z9hG4bK5ba05442 As you can see, the the packet is sent out through the correct socket. But in RR and Via header it advertises the other TCP socket. This breaks BYEs later on. Is there some way, I can influence, which IP and port Kamailio writes into those headers? Or is this a bug, that Kamailio doesn't check the sending socket correctly? Best Regards, Sebastian

3 6

Usrloc module issue
by aawaise 15 May '14

15 May '14

I went through usrloc page on kamailio site. Link given below. http://www.kamailio.org/docs/modules/3.1.x/modules_s/usrloc.html It states that the module keeps a user location table and provides access to the table to other modules. The module exports no functions that could be used directly from scripts. How can one extract value of domain from Location List ? -- View this message in context: http://sip-router.1086192.n5.nabble.com/Usrloc-module-issue-tp127715.html Sent from the Users mailing list archive at Nabble.com.

1 0

Kamailio does not start with #!define WITH_AUTH
by Arya Farzan 15 May '14

15 May '14

When the following lines are on top of my kamailio.cfg #!KAMAILIO #!define WITH_MYSQL #!define WITH_NAT #!define WITH_TLS #!define WITH_AUTH Kamailio does not start and prints out root@voip:/etc/kamailio# /etc/init.d/kamailio start [....] Starting Kamailio SIP server: kamailio:loading modules under /usr/lib/x86_64-linux-gnu/kamailio/modules/ Listening on udp: 127.0.0.1:5060 udp: 107.170.93.193:5060 tcp: 127.0.0.1:5060 tcp: 107.170.93.193:5060 tls: 127.0.0.1:5061 tls: 107.170.93.193:5061 Aliases: tls: voip:5061 tls: localhost:5061 tcp: voip:5060 tcp: localhost:5060 udp: voip:5060 udp: localhost:5060 [FAIL] already running ... failed! . ok But when I remove "#!define WITH_AUTH" it starts up. How can I find out what the problem is?

4 4

Domain Name of an online user from Location List
by aawaise 15 May '14

15 May '14

How can I pick domain name of an online user from Location List ? Which pseudo variable is to be used ?? I want to get the value of domain name and get it printed in logs. -- View this message in context: http://sip-router.1086192.n5.nabble.com/Domain-Name-of-an-online-user-from-… Sent from the Users mailing list archive at Nabble.com.

1 0

How to remove attribute from SDP ?
by Vitaliy Aleksandrov 14 May '14

14 May '14

Hello list, Can anybody suggest the way to remove a line/attribute from SDP that matches some pattern (regexp), some kind of "grep -v" for SDP ? I'm trying to remove unnecessary ICE candidates from the SDP body and only thing I know is the IP address of the candidate I need to remove. I was trying to use avp_subst() + set_body() or subst_body() but didn't get valid SDP. kamailio-3.2.4.

4 4

reg_fetch_contacts for multiple devices registered
by Jonathan Hunter 14 May '14

14 May '14

Hi Guys, I was wondering if anyone could help? I am currently using reg_fetch_contacts to manipulate signaling based on the user agent device being used, therefore I use the result of; if(reg_fetch_contacts("location", "$ru", "callee")){ xlog("callee=>user_agent $ulc(callee=>user_agent)\n");} I then use $ulc(callee=>user_agent) to make routing decisions. This seems to only return the user-agent device being used for the first registration at that AOR, as I have two devices registered, a Cisco, and a jitsi client, and it only returns the user_agent of the jitsi client I registered first. Is it possible to return the user agents of all the devices registered against an AOR so I can manage decisions accordingly? Many thanks Jon

2 9

Kamailio IRC Devel Meeting 2014
by Daniel-Constantin Mierla 14 May '14

14 May '14

Hello, shall we have our next irc devel meeting to discuss near future plans? I am proposing Thursday, May 15, 2014, at 14:00UTC on #kamailio channel at irc.freenode.net. If anyone wants a different date, please propose alternatives and we will select the one suiting most of the participants. I created a wiki page for it, adding some basic content for the moment, feel free to add new topics and details there: - http://www.kamailio.org/wiki/devel/irc-meetings/2014a Cheers, Daniel -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

2 5

Presence dialoginfo - initial empty NOTIFY
by Ewgeny 14 May '14

14 May '14

Hello list, we're using kamailio presence for BLF functionality, that means lamps on the phone are green when phone is IDLE, blinking RED when - ringing and RED when busy. The problem is - when the phone send SUBSCRIBE first time - presence answers with empty NOTIFY (with no XML info), and lamps on the phone (for some extension) are OFF. The laps will became green only after first call to that extension. How to make non empty first NOTIFY message ? My config: #!ifdef WITH_PRESENCE # ----- presence params ----- modparam("presence", "db_url", DBURL) modparam("presence", "subs_db_mode", 2) modparam("presence", "server_address", SBC_IPADDR) modparam("presence", "max_expires", 60) modparam("presence", "db_update_period", 200) # ----- presence_xml params ----- modparam("presence_xml", "db_url", DBURL) modparam("presence_xml", "force_active", 1) modparam("presence_xml", "integrated_xcap_server", 0) modparam("presence_dialoginfo", "force_single_dialog", 1) #dialog need as dependence modparam("dialog", "dlg_flag", 4) modparam("dialog", "db_mode", 0) #!endif the kamailio 3.3.4 example of initial empty NOTIFY: NOTIFY sip:user_A@192.168.4.2:5064 SIP/2.0 Via: SIP/2.0/UDP xx.xx.xx.xx;branch=z9hG4bK693a.4fc432a84fe66cca11790dc1db4d520b.0 Via: SIP/2.0/UDP 10.10.10.10;rport=5060;branch=z9hG4bK693a.e25d1976.0 To: sip:user_A@xx.xx.xx.xx;tag=1632547193 From: sip:user_A@xx.xx.xx.xx;tag=40b780c8a91f5771f2f8fb63063e8dc6-f960 CSeq: 57 NOTIFY Call-ID: 997810293-5064-30(a)BJC.BGI.E.C Route: <sip:10.10.11.11;r2=on;lr=on;ftag=1632547193>, <sip:xx.xx.xx.xx;r2=on;lr=on;ftag=1632547193> Content-Length: 0 User-Agent: kamailio (3.3.4 (x86_64/linux)) Max-Forwards: 69 Event: dialog Contact: <sip:10.10.10.10:5060> Subscription-State: active;expires=60 example of NOTIFY with XML info: NOTIFY sip:user_A@12.12.12.12:1049 SIP/2.0 Via: SIP/2.0/UDP 10.10.10.10;branch=z9hG4bKb7e2.4fd3e262.0 To: sip:user_A@xx.xx.xx.xx;tag=2032642966 From: sip:user_B@xx.xx.xx.xx;tag=40b780c8a91f5771f2f8fb63063e8dc6-a5e9 CSeq: 195 NOTIFY Call-ID: 734484242-5064-35(a)BJC.BGI.E.C Route: <sip:10.10.11.11;r2=on;lr=on;ftag=2032642966>, <sip:xx.xx.xx.xx;r2=on;lr=on;ftag=2032642966> Content-Length: 327 User-Agent: kamailio (3.3.4 (x86_64/linux)) Max-Forwards: 70 Event: dialog Contact: <sip:xx.xx.xx.xx:5060> Subscription-State: active;expires=60 Content-Type: application/dialog-info+xml <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="00000000000" state="full" entity="user_B(a)10.10.10.10"> <dialog id="fd72b08c-5603-1232-f192-005056954c8a" call-id="fd72b08c-5603-1232-f192-005056954c8a" direction="recipient"> <state>terminated</state> </dialog> </dialog-info>

1 0

How to reply an INVITE with 403
by varun pratapsingh 14 May '14

14 May '14

Hi All, I want to handle a special case in the Kamailio 4.1.3. When I receive INVITE from some UAC I wanto reply it with 403 message. I am using the Kamailio in Proxy mode when the INVITE comes I want to reply it with 403 and do not want to send this INVITE to SIP Server. I expored the Kamailio source code and found that fucntion receive_msg() in file receive.c receives all the SIP messages. I am able to parse the SIP INVITE from such UACs but how to reply them with 403 SIP Code. I am unable to use the t_reply("403","Forbidden") here in this function/file. Also in this function finally the forward_reply(msg); is called which sends the INVITE to the Sip Server. But I dont want to send anything to SIP Server in this case but want to reply the UAC with 403. Can you please guide me how to do and where to do this. I am new to kamailio. Please help. Regards Varun

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sr-users May 2014