sr-users July 2012

sr-users@lists.kamailio.org

64 participants
92 discussions

uac module From header rewriting problems
by Timo Teras 20 Jul '12

20 Jul '12

Hi, I fixed some uac From rewriting issues in commit e1d1c774c9ac0b4d, however even with the latest versions I'm still seeing corruption in From headers when they are rewritten for the whole dialogue (from_restore_mode=auto, the default). I spent some time analyzing the problem and the problem seems to be connected with the fact that only the bitwise difference of the original and modified URI are stored (XOR). The only purpose for this appears to be the idea to save only the difference in the rr params instead of two full URIs. However, it appears that in many cases (especially call transfer) the From header will be altered during dialogue. This is explicitly allowed in RFC 3261 § 20.20: The From header field indicates the initiator of the request. This may be different from the initiator of the dialog. I've seen this in practise with few commercial SIP stacks. Sometimes the changes are minor, or even trivial - but with the difference encoding having even one character changed (e.g. case), being deleted or added will result in the whole header being corrupted. I'm now wondering if we should just store both URIs in the rr params. While taking little more space, it should fix us sending garbage to the wire (which usually results in dropped call as the remote will reject the garbage messages). Any better ideas? Cheers, Timo

3 7

Kamailio as SBC and far end nat
by Martin Schiøtz 19 Jul '12

19 Jul '12

Hi I'm trying to configure kamailio version 3.3.0 to be a Session Border Controller which only purpose is to handle far-end-nat. On the far end site I have a SIP client with IP '192.168.1.2' which is NAT'ed to IP 'zz.zz.85.230'. The SIP ALG is disabled on the NAT firewall. The SIP client is communicating with the kamailio server and the Kamailio server is forwarding every thing to an Avaya SIP server 'xx.xx.173.15' and vice versa. The kamilio is konfigured to do this stateless. The REGISTER and SUBSCRIBE part works fine. The kamailio is using the 'Via:' field and I also needed to do subst on the 'Contact:' field in order for our SIP server to communicate back to the kamailio. But when I get to the NOTIFY packet from the SIP server to the kamailio there is no 'Via:' field or any other information about the SIP clients IP/port and the Kamailio just sends back 'SIP/2.0 404 Not here.' to the SIP server. I guess that this can not be solved with a statless kamailio? I guess that I need some kind of state table in the kamailio - is that possible without doing REGISTER directly with the kamailio? Any other good ideas are welcome? Cheers, Martin Tell me if need more info the issue? ----- # T xx.xx.173.15:38059 -> yy.yy.159.211:5060 [AP] NOTIFY sip:2001012@yy.yy.159.211:5060;transport=TCP SIP/2.0. Call-ID: NjQ5ZDNlYzRjOWFjMzMzN2JlYzAwMTg4ODYwZTJlYWY.. From: "2001012" <sip:2001012@bsosip.domain.dk>;tag=-667195155*1*016asm-callprocessing.sar229435981~1342570131099~1170998434~1. To: "2001012" <sip:2001012@bsosip.domain.dk>;tag=7ca0af7d. CSeq: 3 NOTIFY. Contact: <sip:xx.xx.173.14:15060>. Via: SIP/2.0/TCP xx.xx.173.15;branch=z9hG4bK4DEAAD0E478B838008189457-AP;ft=xx.xx.173.15~13c4. Via: SIP/2.0/UDP xx.xx.173.14:15070;branch=z9hG4bK4DEAAD0E478B838008189457. Via: SIP/2.0/TCP xx.xx.173.14:15070;branch=z9hG4bK4DEAAD0E478B838018189455. Event: message-summary. Content-Type: application/simple-message-summary. Content-Length: 69. Subscription-State: active;expires=299. Max-Forwards: 68. User-Agent: AVAYA-SM-6.1.4.0.614005. . Messages-Waiting: no. Message-Account: sip:2001012@bsosip.domain.dk. ## T yy.yy.159.211:5060 -> xx.xx.173.15:38059 [AP] SIP/2.0 404 Not here. Call-ID: NjQ5ZDNlYzRjOWFjMzMzN2JlYzAwMTg4ODYwZTJlYWY.. From: "2001012" <sip:2001012@bsosip.domain.dk>;tag=-667195155*1*016asm-callprocessing.sar229435981~1342570131099~1170998434~1. To: "2001012" <sip:2001012@bsosip.domain.dk>;tag=7ca0af7d. CSeq: 3 NOTIFY. Via: SIP/2.0/TCP xx.xx.173.15;branch=z9hG4bK4DEAAD0E478B838008189457-AP;ft=xx.xx.173.15~13c4;rport=38059. Via: SIP/2.0/UDP xx.xx.173.14:15070;branch=z9hG4bK4DEAAD0E478B838008189457. Via: SIP/2.0/TCP xx.xx.173.14:15070;branch=z9hG4bK4DEAAD0E478B838018189455. Server: kamailio (3.3.0 (i386/linux)). Content-Length: 0. . # T xx.xx.173.15:38059 -> yy.yy.159.211:5060 [A] ...... # T yy.yy.159.211:5060 -> xx.xx.173.15:38059 [AP] SIP/2.0 404 Not here. Call-ID: NjQ5ZDNlYzRjOWFjMzMzN2JlYzAwMTg4ODYwZTJlYWY.. From: "2001012" <sip:2001012@bsosip.domain.dk>;tag=-667195155*1*016asm-callprocessing.sar229435981~1342570131099~1170998434~1. To: "2001012" <sip:2001012@bsosip.domain.dk>;tag=7ca0af7d. CSeq: 3 NOTIFY. Via: SIP/2.0/TCP xx.xx.173.15;rport=38059;branch=z9hG4bK4DEAAD0E478B838008189457-AP;ft=xx.xx.173.15~13c4. Via: SIP/2.0/UDP xx.xx.173.14:15070;branch=z9hG4bK4DEAAD0E478B838008189457. Via: SIP/2.0/TCP xx.xx.173.14:15070;branch=z9hG4bK4DEAAD0E478B838018189455. Server: kamailio (3.3.0 (i386/linux)). Content-Length: 0. -----

3 2

Compile Kamailio from Source with STUN
by Vijay Thakur 19 Jul '12

19 Jul '12

Dear All Experts, I am following the steps given at http://kb.asipto.com/kamailio:presence:k31-made-simple. I want to compile kamailio with stun support. So guide me that what will be the command to do it. As per the given command : *make PREFIX=/usr/local/kamailio-3.1-xcap FLAVOUR=kamailio \ include_modules="db_mysql presence presence_xml xhttp xcap_server" cfg what text should i use to make stun module. * -- Best Regards, Vijay Thakur (Assistant Manager - Networks) Mobile : +91 8744018065 Mail : vijay.thakur(a)loopmethods.com Loop IT Methods Private Limited 1st Floor, B-10, Sector-7, Noida, (U.P) India Ph: +91 120 305 3481,82 (INDIA), +1 347 468 8631 (USA), +61 390 011 178 (AUS) Fax: +91 971 728 330 Web: www.loopmethods.com LOOP Disclaimer ------------------------------------------------------------------------------------------------- This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited. -----------------------------------------------------------------------------------------------------------------

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Kamailio v3.2.4 Released
by Daniel-Constantin Mierla 19 Jul '12

19 Jul '12

Hello, Kamailio v3.2.4 is out -- this is a minor release packaged from previous stable branch, GIT 3.2. Anyone running 3.2.x should update to it in order to benefit of latest fixes, there is no change required to be done in database structure or configuration file, just re-install over the old deployment. As usual, a backup is recommended to be in the safe side. More details about this release at: * http://www.kamailio.org/w/2012/07/kamailio-v3-2-4-released/ New installations should start with latest stable series 3.3.x, at this time latest Kamailio version being v3.3.0. Cheers, Daniel -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - http://asipto.com/u/katu Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - http://asipto.com/u/kpw

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Re: [SR-Users] Presence Subscription / Subscription-State: pending
by Daniel-Constantin Mierla 19 Jul '12

19 Jul '12

Hello, please keep the mailing list cc-ed, private emails from mailing list discussions will be ignored. On 7/19/12 8:28 AM, Durmuş Ali Öztürk wrote: > Hi Daniel, > > Thank you for your advise. I have found the problem, I thought it is > enough to subscribe with my own ID but fact is I have to subscribe to > the buddies of my contact list.This was not clear for me at the beginning. ok, great you found it. > > It is better to subscribe only to the presence.wmi? Or should I > susbcribe to presence and presence.wmi? Do you mean presence mwi? mwi is for message waiting indication, like voicemail, so you get notifications when someone leaves you a message on the media server. Cheers, Daniel > > Best Regards, > Ali > > 2012/7/18 Daniel-Constantin Mierla <miconda(a)gmail.com > <mailto:miconda@gmail.com>> > > Hello, > > when you updated the presence rules via xcap, did you executed the > function to update the notifiers as well? I mean the two function at: > > http://kamailio.org/docs/modules/stable/modules_k/presence.html#id2496049 > > Cheers, > Daniel > > > > On 7/18/12 9:29 AM, Durmuş Ali Öztürk wrote: >> Hi All, >> >> I am trying to subscribe to the presence event but unfortunaly I >> am getting following Notify with the "Subscription-State: >> pending" status. >> >> NOTIFY sip:5000@192.168.127.138:55583 >> <http://sip:5000@192.168.127.138:55583> SIP/2.0 >> Via: SIP/2.0/UDP 192.168.127.230;branch=z9hG4bK6a8e.19cd7bb7.0 >> To: sip:5000@192.168.127.230 >> <mailto:sip%3A5000@192.168.127.230>;tag=2786be25cb234561b8dea2e067fd769c-5000 >> From: sip:5000@192.168.127.230 >> <mailto:sip%3A5000@192.168.127.230>;tag=a6a1c5f60faecf035a1ae5b6e96e979a-6a8e >> CSeq: 2 NOTIFY >> Call-ID: e4ec6031-99e1-de11-8845-5000@vvt-laptop >> Content-Length: 0 >> User-Agent: kamailio (3.2.3 (i386/linux)) >> Max-Forwards: 70 >> Event: presence >> Contact: <sip:192.168.127.230:5060;transport=udp> >> Subscription-State: pending;expires=3670 >> >> >> For the implemantation I followed the guide from >> http://kb.asipto.com/kamailio:presence:k31-made-simple >> >> The xcap table has already the needed resource-lists >> and pres-rules record. >> >> Is there another guide exists for the presence module which can >> be helpfully for me? >> >> Thank you in advance >> ali >> >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- > Daniel-Constantin Mierla -http://www.asipto.com > http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -http://www.linkedin.com/in/miconda > Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 -http://asipto.com/u/katu > Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 -http://asipto.com/u/kpw > > -- Daniel-Constantin Mierla -http://www.asipto.com http://twitter.com/#!/miconda -http://www.linkedin.com/in/miconda Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 -http://asipto.com/u/katu Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 -http://asipto.com/u/kpw

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planning release of v3.2.4
by Daniel-Constantin Mierla 19 Jul '12

19 Jul '12

Hello, later this week (like Thursday) I am considering packaging v3.2.4 from the latest git branch 3.2. If anyone has patches to push it there, please do it asap in case you want them in this release. Cheers, Daniel -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - http://asipto.com/u/katu Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - http://asipto.com/u/kpw

1 1

Presence Subscription / Subscription-State: pending
by Durmuş Ali Öztürk 18 Jul '12

18 Jul '12

Hi All, I am trying to subscribe to the presence event but unfortunaly I am getting following Notify with the "Subscription-State: pending" status. NOTIFY sip:5000@192.168.127.138:55583 SIP/2.0 Via: SIP/2.0/UDP 192.168.127.230;branch=z9hG4bK6a8e.19cd7bb7.0 To: sip:5000@192.168.127.230;tag=2786be25cb234561b8dea2e067fd769c-5000 From: sip:5000@192.168.127.230;tag=a6a1c5f60faecf035a1ae5b6e96e979a-6a8e CSeq: 2 NOTIFY Call-ID: e4ec6031-99e1-de11-8845-5000@vvt-laptop Content-Length: 0 User-Agent: kamailio (3.2.3 (i386/linux)) Max-Forwards: 70 Event: presence Contact: <sip:192.168.127.230:5060;transport=udp> Subscription-State: pending;expires=3670 For the implemantation I followed the guide from http://kb.asipto.com/kamailio:presence:k31-made-simple The xcap table has already the needed resource-lists and pres-rules record. Is there another guide exists for the presence module which can be helpfully for me? Thank you in advance ali

2 1

Reply 503 was replaced to 500
by Uri Shacked 18 Jul '12

18 Jul '12

Hi, Kamailio server is behind our company's softswitch and acts as a sip application server. I notice that there are calls that the softswitch replied with 503 "service unavailable" and kamailio sent to the originator leg 500 "service unavaileable". When kamailio recieved 504 or 502 it sends them back as is. shouldn't it be the same with 503? It also does not have a "to tag" in the CDR. And the "to tag" in the 503 that was recieved is not equal to the 500 reply "to tag" kamailio sent back. any ideas? BR, Uri

2 6

Topoh address
by Alex Balashov 17 Jul '12

17 Jul '12

A whole ago, it was mentioned on the list that there was some bug or issue in Topoh that precluded the use of the actual host IP of the proxy as the Topoh spoof address. Is that still true in 3.3? Or has that been fixed some time ago? Thanks! -- Alex -- Sent from my Samsung mobile, and thus lacking in the refinement one might expect from a proper keyboard. Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 Tel: +1-678-954-0670 Web: http://www.evaristesys.com/

2 1

How to use regular expression for $var ?
by Gary Chen 17 Jul '12

17 Jul '12

Kamailio 3.3.0 I have a variable $var(s:dst). It can store either a number or IP. How do I check to determine whether it is a number of IP? I tried the following and it did not work: If ($var(s:dst) =~ "^\d+\.\d+\.\d+\.\d+$"){ It is a IP. }else{ It is a Number } Thanks Gary

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sr-users July 2012