June 2013 - sr-users - kamailio.org

Kamailio and Asterisk integration
by Lucky Santiago 17 Jun '13

17 Jun '13

Hi, I am planning to deploy a kamailio as a front-end of a currently in production voip gateway which is running in asterisk (a2billing) and i can't picture out in terms of configuration on kamailio how the registration, dialplan on kamailio goes as asterisk does, if you can please show me a sample config on how that stuff works to fully communicate with my asterisk server, i have read and setup a working kamailio installation but i wasn't able to establish a full communication between kamailio and asterisk. Thanks in advance. Lucky

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REFER
by Tony Turner 15 Jun '13

15 Jun '13

Hi, I currently have:- Kamailio -----Freeswitch--------NodeMax SIP/SS7------PSTN I have users on Kamailio registered 1000, 1001 to 1004 and make calls to each other and to PSTN and PSTN to users. Now I want to keep transfers off network so basically on Kamailio. So currently sip client 1000 calls 1001 it stays on Kamailio (that works), but if inbound from PSTN to 1000, 1000 cannot transfer to 1001 The REFER is sent to freeswitch, can I get Kamailio to just transfer from 1000 to 1001. I don't see any reason why I would want a transfer to be sent to freeswitch and down to my Nodemax CTI SIP/SS7 gateway. It would seem sensible for the proxy to deal with a user to user transfer. Thanks Tony Turner

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Re: [SR-Users] memcache problem - reporting protocol error
by Charles Chance 14 Jun '13

14 Jun '13

Although it's difficult to know the exact cause of your "protocol" error, it does appear from your tests that the graceful handling of errors and subsequent reconnects is better in libmemcached than in libmemcache. So if you do encounter the same conditions again, I would imagine that the library would handle it and attempt to reconnect transparently. If not, however, then at least you are more likely to find support as the library is still under active development :) Cheers, Charles On 6 Jun 2013 18:12, "Dragos Oancea" <droancea(a)yahoo.com> wrote: Hi Charles, I tried first to trigger again the bug using some iptables rules (to simulate a network problem) , so Kamailio could not communicate with the memcache anymore: WARNING: memcached [memcached.c:189]: WARNING: memcached: mcm_server_readable():2582: timeout: select(2) call timed out for read(2)able fds WARNING: memcached [memcached.c:189]: WARNING: memcached: mcm_server_writable():3173: timeout: write select(2) call timed out WARNING: memcached [memcached.c:189]: WARNING: memcached: mcm_server_connect():2290: select(2) failed: select(2) timed out on establishing conn ection NOTICE: memcached [memcached.c:194]: NOTICE: memcached: mcm_server_connect():2297: connect(2) failed NOTICE: memcached [memcached.c:194]: NOTICE: memcached: mcm_server_connect_next_avail():2323: unable to find a server to connect to This looks very much like what i've seen in the logs just before it started to report the "protocol error" problem. But in the simulated case , after I remove the iptables rules that block the access to memcache, Kamailo does not recover from the situation, it just keeps on printing messages like the above, when it should connect to memcache instead. It looks like another libmemcache-related bug to me. Then I tried the same thing with the latest memcached module from git: With the memcached firewalled after starting Kamailio it prints this to the logs: ERROR: memcached [mcd_var.c:154]: pv_get_mcd_value_helper(): could not get result for key 29515_HA1 - error was 'SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY' When I flush the firewall rules, it reconnects to memcache, which makes it better than the old one. But how can I be sure that the new one will not have the same "protocol error" issue, since I could not reproduce exactly the problem so far ? Regards, Dragos ------------------------------ *From:* Charles Chance <charles.chance(a)sipcentric.com> *To:* Dragos Oancea <droancea(a)yahoo.com>; Kamailio (SER) - Users Mailing List <sr-users(a)lists.sip-router.org> *Sent:* Thursday, June 6, 2013 6:27 PM *Subject:* Re: [SR-Users] memcache problem - reporting protocol error Hi Dragos, The memcached module has indeed been updated in the master to use libmemcached, as the old libmemcache library is no longer under active development. Have you tried using the latest version of the module from git? Do you still get the same errors? Cheers, Charles On 6 June 2013 16:18, Dragos Oancea <droancea(a)yahoo.com> wrote: Hello We are having issues with the memcached module (Kamailio 4.0.0) . All of a sudden we are getting this kind of messages in the logs, and the values for the requested keys are not retrieved. ALERT: memcached [memcached.c:189]: ALERT: memcached: mcm_fetch_cmd():1305: memcache(4) protocol error: STORED#015#012VALUE 29515_HA1 0 32#015#012b52299247f16c6adfa4c8cc53b34e74a#015#012END#015#012STORED#015#012 [...] ALERT: memcached [memcached.c:189]: ALERT: memcached: mcm_fetch_cmd():1176: memcache(4) protocol error: server sent data for key not in request I suspect that at some point there was a network problem between the memcached server and Kamailio that triggered this abnormal behavior and I also suspect that it is connected with the (old) libmemcache library (libmemcache-1.4.0.rc2) . This is fixed only with a Kamailio restart. Has anyone experience this ? Is there a fix ? I noticed that the Kamailio from the trunk compiles the memcached module with the more new libmemcached library from here: https://launchpad.net/libmemcached/+download . Maybe this is one of the reasons libmemcache is going to be dropped ? Thank you very much. Regards, Dragos _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users www.sipcentric.com Follow us on twitter @sipcentric <http://twitter.com/sipcentric> Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered office: Unit 10 iBIC, Birmingham Science Park, Holt Court South, Birmingham B7 4EJ. -- www.sipcentric.com Follow us on twitter @sipcentric <http://twitter.com/sipcentric> Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered office: Unit 10 iBIC, Birmingham Science Park, Holt Court South, Birmingham B7 4EJ.

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Is single line Via with multiple entries allowed?
by Mino Haluz 14 Jun '13

14 Jun '13

Hi, I'm struggling to solve one problem with 503 reply code. Kamailio receives 503 and changes it to 500, with error in log WARNING: script writer didn't release transaction I inspected incoming 503 (from Cisco gateway), everything seems to be ok except for Via: SIP/2.0/UDP localip:5060;branch=z9hG4bK47e3.c400aa13.0,SIP/2.0/UDP ip2:5060;branch=z9hG4bK37170104;rport=5060 Does kamailio support this kind of Via? Thanks, Mino

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location() vs registered()
by Victor V. Kustov 14 Jun '13

14 Jun '13

Hi all! Whats difference between registered("location") and lookup("location")? -- WBR, Victor JID: coyote(a)bks.tv JID: coyote(a)bryansktel.ru I use FREE operation system: 3.9.4-calculate GNU/Linux

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Re: [SR-Users] Regd. S-CSCF
by Camille Oudot 14 Jun '13

14 Jun '13

Le Fri, 14 Jun 2013 17:06:14 +0530, Shankar <shankar.rk(a)plintron.com> a écrit : > I am new to Kamailio. I need a sample S-CSCF config file to test and > understand. Please help. Hi Sankar, you will find samples for P, I and S-CSCF in the kamailio repository in the 'examples' dir: http://git.sip-router.org/cgi-bin/gitweb.cgi?p=sip-router;a=tree;f=examples… Cheers, -- Camille

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Regarding Instant messaging using TCP on Kamailio 3.3
by Sunil Chandrasekharan 14 Jun '13

14 Jun '13

Hi All, I have set up Kamailio 3.3 on Ubuntu machine.I created two user test 1 and test 2. I could use Presence and also i was able to register to Kamailio server and exchange presence status with each other. Details- I used TCP protocol . testing methods - Linphone, a sample application. I am able to register succesfully with (TCP) on to kamailio server using Lin phone and sample application. I am able to update presence status of the users. Issue : When i try to send messages between two users ( using TCP ) 1. from Sample application, when i try to send message, i get 420 temporarily Unavailable error from server. 2. from Lin phone 3.5.2, i was able to send messages ( sue TCP) but when the other user try to reply back , i get same error 480 Temporarily Unavailable. error from server. I want a support to understand why i get error while sending messages with TCP via Kamailio server. I am able to succeesfully send and receive messages when i use UDP from my sample application and Lin phone. regards Sunil C

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app_python module fails with "AttributeError: init_modules() has failed"
by phil lemelin 14 Jun '13

14 Jun '13

Good morning, I'm trying to use the app_python module with Kamailio but i'm unable to even reach a point where it loads my python module. My host: CentOS release 6.3 (Final) 2.6.32-042stab076.7 x86_64 The installed packages: [root@host ~]# rpm -qa | grep kamai kamailio-4.0.1-1.1.x86_64 kamailio-mysql-4.0.1-1.1.x86_64 kamailio-python-4.0.1-1.1.x86_64 Configuration modification: #!define WITH_MYSQL loadmodule "app_python.so" The python module: [root@phone ~]# cat /usr/local/etc/sip-router/handler.py class Handler(object): def child_init(self, y): return 0 def mod_init(): return Handler() When I start Kamailio, it fails like this: [root@host ~]# kamailio -D 1 -E -e loading modules under /usr/local/lib/kamailio/modules_k/:/usr/lib64/kamailio/modules/ 0(729) NOTICE: <core> [sr_module.c:627]: /usr/lib64/kamailio/modules/app_python.so: exports dlflags interface is deprecated and it will not be supported in newer versions; consider using mod_register() instead Listening on udp: 127.0.0.1:5060 udp: 10.3.105.49:5060 tcp: 127.0.0.1:5060 tcp: 10.3.105.49:5060 Aliases: tcp: phone:5060 tcp: phone.dev.net2.irg:5060 tcp: localhost4:5060 tcp: localhost4.localdomain4:5060 tcp: localhost:5060 tcp: localhost.localdomain:5060 udp: phone:5060 udp: phone.dev.net2.irg:5060 udp: localhost4:5060 udp: localhost4.localdomain4:5060 udp: localhost:5060 udp: localhost.localdomain:5060 WARNING: no fork mode and more than one listen address found (will use only the first one) 0(729) INFO: <core> [tcp_main.c:4846]: init_tcp: using epoll_lt as the io watch method (auto detected) 0(729) INFO: rr [../outbound/api.h:49]: Failed to import bind_ob 0(729) INFO: rr [rr_mod.c:159]: outbound module not available 0(729) INFO: usrloc [hslot.c:53]: locks array size 512 0(729) ERROR: <core> [sr_module.c:939]: init_mod(): Error while initializing module db_mysql (/usr/lib64/kamailio/modules/db_mysql.so) 0(729) ERROR: app_python [python_support.c:132]: mod_init: Unhandled exception in the Python code: AttributeError: init_modules() has failed 0(729) ERROR: <core> [sr_module.c:939]: init_mod(): Error while initializing module app_python (/usr/lib64/kamailio/modules/app_python.so) ERROR: error while initializing modules And with -d -d -d : *snip* 0(751) DEBUG: <core> [sr_module.c:674]: find_export_record: found <t_release> in module tm [/usr/lib64/kamailio/modules/tm.so] 0(751) DEBUG: <core> [sr_module.c:935]: DEBUG: init_mod: app_python 0(751) DEBUG: <core> [sr_module.c:935]: DEBUG: init_mod: db_mysql 0(751) ERROR: <core> [sr_module.c:939]: init_mod(): Error while initializing module db_mysql (/usr/lib64/kamailio/modules/db_mysql.so) 0(751) ERROR: app_python [python_support.c:132]: mod_init: Unhandled exception in the Python code: AttributeError: init_modules() has failed 0(751) ERROR: <core> [sr_module.c:939]: init_mod(): Error while initializing module app_python (/usr/lib64/kamailio/modules/app_python.so) ERROR: error while initializing modules 0(751) DEBUG: tm [t_funcs.c:118]: DEBUG: tm_shutdown : start 0(751) DEBUG: tm [t_funcs.c:121]: DEBUG: tm_shutdown : emptying hash table 0(751) DEBUG: tm [t_funcs.c:123]: DEBUG: tm_shutdown : removing semaphores 0(751) DEBUG: tm [t_funcs.c:125]: DEBUG: tm_shutdown : destroying tmcb lists 0(751) DEBUG: tm [t_funcs.c:128]: DEBUG: tm_shutdown : done 0(751) DEBUG: <core> [mem/shm_mem.c:242]: shm_mem_destroy 0(751) DEBUG: <core> [mem/shm_mem.c:245]: destroying the shared memory lock I've been trying all the configuration permutation I could think off. Am I missing a package or something in the configuration ? Regards, -- Phil.

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ds_is_from_list does not work in my code
by Mino Haluz 14 Jun '13

14 Jun '13

Hi, what this function in fact does? It only compares host from dispatcher list and $si ? or it compares with source port as well ? I'm distributing traffic across multiple gateways with dispatcher module, these gateways create another leg and send it back to proxy. I would like to compare it with my dispatcher list if the source IP of the request is one of the dispatcher list. So I cannot use this function, right? Any other functions that can do something similar? Mino

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Regd. S-CSCF
by Shankar 14 Jun '13

14 Jun '13

Hi, I am new to Kamailio. I need a sample S-CSCF config file to test and understand. Please help. Regards, Shankar

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