- sr-users - kamailio.org

Siremis and kamailio 5.x.x
by Olli Attila 01 Mar '18

01 Mar '18

Hello, Question about Kamailio web GUI (Siremis): I believe the Siremis updates are still a ongoing work or has there been any updates when the new Siremis update (compatible with Kamailio 5.x.x) will be released? https://www.kamailio.org/w/2017/07/siremis-ongoing-updates/ Cheers, Olli

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Kamailio ims with TCP
by Amar Tinawi 01 Mar '18

01 Mar '18

Hello list For some reason i couldn't register on kamailio ims when i use only TCP protocols between nodes, the error was solved when i enabled UDP between I-CSCF and S-CSCF is it mandatory for those two nodes to talk over UDP only ? or i'm missing something ? and in general for sip protocol which is better ? UDP or TCP ? Regards,

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Trunks with registration
by Володимир Іванець 28 Feb '18

28 Feb '18

Hello all! I was testing Registration capability of UAC module and have two questions that hopefully someone have answers to: - Is it possible to tell Kamailio which transport protocol to use other than by configuring auth_proxy column of uacreg table with domain name that has SRV record? - What are the priorities of different transport protocols in SRV record when it is used? Thanks a lot!

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Changing contact header
by Cibin Paul 28 Feb '18

28 Feb '18

Hello, In my setup, Kamailio acts as a registration server and route the calls to different asterisk boxes. The clients using IPV6 private ip and IPV4 public ip address are rejected by the asterisk server. On printing the contact header, I am getting the private ip (ipv6). Is there a way to change the contact header with public ip in all scenarios. I tried updating the contact header as below and unfortunately not working. Is there a better way to handle the scenario. As of now we don/t have a plan to implement ipv6 network. $var(p1) = "<sip:"; $var(p2) = "@"; $var(p3) = ":"; $var(p4) = ";ob>"; $var(x) = "" + $var(p1) + $fU + $var(p2) + $si + $var(p3) + $sp + $var(p4); remove_hf("Contact"); append_hf("Contact: $var(x)\r\n”); Thanks & Regards Cibin

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Question on contribution of documentation improvements
by Floimair Florian 28 Feb '18

28 Feb '18

Hi guys! While reading through documentation I realized there are a lot of typos (typing errors) and some misspellings so I decided to try to correct them. I dit this in all of Kamailios module and lib documentation (the xml in the doc folders) and they turned out to be quite a lot. Right now this sits on my fork of kamailo on github, but I would like to get this back into the main repository. What's puzzling me though, is how to most effectively get this in via a pull request due to the following: For now I have made a single commit for each module I touched. Therefore quite a lot of commits have accumulated. Actually 152 commits in modules and 4 commits in lib. Since most of the commits in modules are rather small (ranging from 1 line changed to 4) with only a few having more, I am not sure if that's the way to go to have a single commit for each module. Therefore I am unsure if a squashed version would be more appropriate. Therefore I created a second branch on my forked repository. Unsquashed: https://github.com/ffloimair/kamailio/tree/wip-fix-typos Squashed: https://github.com/ffloimair/kamailio/tree/wip-fix-typos In total a diff --stat to master results in 205 files changed, 521 insertions(+), 521 deletions(-) So please let me know what would be the wanted (and most efficient) way to proceed. With best regards Florian Floimair Innovation - Software-Development COMMEND INTERNATIONAL GMBH A-5020 Salzburg, Saalachstraße 51 Tel: +43-662-85 62 25 Fax: +43-662-85 62 26 http://www.commend.com Security and Communication by Commend FN 178618z | LG Salzburg

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cnxcc module - make auth for redis connection
by Donat Zenichev 28 Feb '18

28 Feb '18

Hi community. This message is specially dedicated to developers of the kamailio project. I need to find solution how to make authentication for connections of cnxcc with redis. For that moment, cnxcc module is able to connect to redis only without password (Carlos Ruiz Díaz will add this possibility later?). So that, this makes database vulnerable. Well, furthermore I don't want to use local redis database, cuz I think machine that contains kamailio daemon, must perform just this kind of actions - SIP proxying (kamailio server is not to be a database server or anything else). For that moment we use separate redis db for cases like that, but this is not best practice I think. I already tried to find solution (for e.g. connections via another module like db_redis: https://github.com/kamailio/kamailio/pull/1432) but I got advice - achieving my goal by sr-users mailing list. Please pay attention for my request. I think this will be very helpfull for others. -- -- BR, Donat Zenichev Wnet VoIP team Tel Ukraine: +380(44) 5-900-800 Tel USA: +164(67) 8-174-17 (ext 1320) https://w-net.us/ <http://wnet.ua>

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kamailio 5.1 compilation error
by Aqs Younas 28 Feb '18

28 Feb '18

Greetings list, I am trying to install Kamailio 5.1 from source code on Debian 8.10. But It is failing with below error. Don't know what could be wrong. Any suggestion is much appreciated. Thanks. make --no-print-directory -C ./squirrel/squirrel SQMARCH64="-m64" CC_EXTRA_FLAGS="-fPIC" \ OUT="../../libsquirrel.a" sq64 gcc -O2 -m64 -D_SQ64 -fno-exceptions -fno-rtti -Wall -fno-strict-aliasing -c sqapi.cpp sqbaselib.cpp sqfuncstate.cpp sqdebug.cpp sqlexer.cpp sqobject.cpp sqcompiler.cpp sqstate.cpp sqtable.cpp sqmem.cpp sqvm.cpp sqclass.cpp -I../include -I. -Iinclude -fPIC gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory gcc: error trying to exec 'cc1plus': execvp: No such file or directory Makefile:51: recipe for target 'sq64' failed make[3]: *** [sq64] Error 1 Makefile:44: recipe for target 'libsquirrel.a' failed make[2]: *** [libsquirrel.a] Error 2 Makefile:511: recipe for target 'modules' failed make[1]: *** [modules] Error 1 make[1]: Leaving directory '/usr/src/kamailio/src' Makefile:27: recipe for target 'all' failed make: *** [all] Error 2 Br, Aqs.

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please downgrade warning message
by Juha Heinanen 28 Feb '18

28 Feb '18

I noticed this when I start a correctly configured kamailio: Feb 27 21:55:45 rautu /usr/bin/sip-proxy[29529]: WARNING: registrar [registrar.c:369]: mod_init(): empty reg_xavp_cfg or sock_flag not set -> resetting Neither of those two are mandatory. I'm not using registered() function. Please downgrade the message to info or debug level. -- Juha

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rtpengine transcoding benchmarks?
by Brooks Bridges 27 Feb '18

27 Feb '18

I realize the transcoding support is rather new, however has anyone run any real world tests on it yet? Trying to get a sense of what the performance will be. I'm aware that it's forced into userspace for transcoding so it's not *nearly* as efficient as the iptables module, however even if I have to throw a rack full of whiteboxes at it to get anywhere close to decent numbers that's still going to be comparable to a lot of the commercial options out there right now. Brooks Bridges | Engineering Manager O1 Communications 4359 Town Center Boulevard, Suite 217 El Dorado Hills, California 95762 office: 916.235.2097 | main: 888.444.1111, Option 2 email: bbridges(a)o1.com<mailto:bbridges@o1.com> | web: www.o1.com<http://www.o1.com/>

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Kamailio v5.0.6 Released
by Daniel-Constantin Mierla 27 Feb '18

27 Feb '18

Hello, Kamailio SIP Server v5.0.6 stable release is out. This is a maintenance release of the previous stable branch, 5.0, that includes fixes since the release of v5.0.5. There is no change to database schema or configuration language structure that you have to do on previous installations of v5.0.x. Deployments running previous v5.0.x versions are strongly recommended to be upgraded to v5.0.6 or v5.1.x. For more details about version 5.0.6 (including links and guidelines to download the tarball or from GIT repository), visit: * https://www.kamailio.org/w/2018/02/kamailio-v5-0-6-released/ RPM, Debian/Ubuntu packages will be available soon as well. Note: the latest stable branch is 5.1, at this moment with its latest release v5.1.1 (and v5.1.2 planned to be out in the next few days). See more details about it at: * https://www.kamailio.org/w/kamailio-v5-1-0-release-notes/ Many thanks to all contributing and using Kamailio! Cheers, Daniel -- Daniel-Constantin Mierla www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - www.asipto.com Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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Kamailio and dialogs..
by Laura 27 Feb '18

27 Feb '18

Dear list.. I'm using kamailio on a live enviroment with dialogs support.. what I made is a script that permit me to see the concurrent call (live) with all parameters using the info saved on dialogs tables. The problem is that if the call is not going on the first termination of LCR but for examples in the second, the dialog is not updated with the paramenter of the second supplier.. Is this problem only on my system or maybe i forgot to make some configuration steps ? Regards Laura

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Kamailio v4.4.7 Released
by Daniel-Constantin Mierla 26 Feb '18

26 Feb '18

Hello, Kamailio SIP Server v4.4.7 stable release is out. This is the last planned maintenance release of the old stable branch, 4.4, that includes fixes since the release of v4.4.6. There is no change to database schema or configuration language structure that you have to do on upgrading previous installations of v4.4.x. Deployments running previous v4.x.x versions are strongly recommended to be upgraded to v4.4.7, or even better to v5.0.x or 5.1.x. For more details about version 4.4.7 (including links and guidelines to download the tarball or from GIT repository), visit: * https://www.kamailio.org/w/2018/02/kamailio-v4-4-7-released/ RPM, Debian/Ubuntu packages will be available soon as well. Note: theb branch 4.4 is going out of maintenance life time, the latest stable branch is 5.1, at this moment with its latest release v5.1.2. See more details about it at: * https://www.kamailio.org/w/kamailio-v5-1-0-release-notes/ Many thanks to all contributing and using Kamailio! Cheers, Daniel -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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Kamailio json_rpc isn't reloading htable data from database into memory
by José Seabra 26 Feb '18

26 Feb '18

Hello there, I'm using xHTTP and json_rpc module to receive http instructions to reload htable's from database to memory. The way i'm calling the json_rpc in kamailio script is the following: $var(json_rpc)='{"jsonrpc": "2.0", "method": "htable.reload", "id":"htable"}'; jsonrpc_exec($var(json_rpc)); The execution of this command doesn't give any errors, but the changes made on htable database weren't transmitted to the memory. I have attached the kamailio log where you can see that there isn't any erros on json_rpc execution during reload instructions, the strange thing here is that the htable module only says: 2018-02-23 14:33:44.968 DEBUG: htable [ht_db.c:96]: ht_db_open_con(): database connection opened successfully doesn't report if the reload was success or not. Those logs attached were printed with kamailio debug set to level 4. The kamailio version is 4.4.2. Thank you -- Best Regards José Seabra

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Re: [SR-Users] How are SIP messages divided amongst TCP workers?
by Cody Herzog 23 Feb '18

23 Feb '18

Thanks, Juha. You are correct. That feature request is directly relevant to this thread. I will upvote the feature request, and add a link back to this thread. The proposed workaround of using async workers is the one I opted to use.

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Re: [SR-Users] How are SIP messages divided amongst TCP workers?
by Cody Herzog 23 Feb '18

23 Feb '18

>A common design which avoids this is to use TCP at the client edge and >UDP inside the network core. This is one of the reasons why TCP is not >optimal for use inside the core. That makes sense, but is unfortunately not an option for me due to strict security requirements. I need to use TLS on the whole path. Another option I explored was to have the edge proxies not always use the same TCP connection for sending to the registrar. If I could find a way to load balance across a number of TCP connections, that would probably work for me. Perhaps there is a way the DISPATHCER module can be configured to accomplish this. Maybe the dispatcher configuration can list multiple copies of the same destination, but each having a different send socket address, and then can load balance across those. Does that make any sense?

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Load-balance on 2 proxies
by David Villasmil 23 Feb '18

23 Feb '18

Hello guys, I hava a setup where there are 2 kamailios in active-active connected to the same db (no registration yet). They both forward requests load balancing to several freeswitches. My question is, is the load balance algorithm independent on the 2 servers, or do they act as 1 load balancing in term of sending the next request to the next FS in the list independent of which kamailio sent the last request? I.e. Kam1 -> fs1 Kam2 -> fs2 Kam1 -> fs3 Kam1 -> fs1 Kam2 -> fs2 And so on? Thanks for your help David

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Re: [SR-Users] How are SIP messages divided amongst TCP workers?
by Cody Herzog 23 Feb '18

23 Feb '18

Thanks. Regarding UDP, that all makes sense. For my short-term needs, to minimize risk and infrastructure changes, it looks like the ASYNC module will work. Here's the basic outline of what I'm doing: -------- async_workers=8 route { route(CHECK_IS_EXPENSIVE_OPERATION); if ($var(isExpensiveOperation)) { async_task_route("COMMON"); } else { route(COMMON); } } route[COMMON] { # Do all my normal routing logic. } -------- I detect at the very top of the main route whether the operation will be expensive. If so, I process the message with an async worker. If not, I directly process the message on the TCP worker. The rest of the routing logic remains unchanged. The only difference is that I execute the expensive operations using the async workers. It's not the prettiest thing in the world, but it seems like an OK short-term fix to relieve pressure. I will revisit the bigger architectural ideas in a later phase. Thanks again for all your help and good ideas. Happy Friday. -Cody

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Re: [SR-Users] How are SIP messages divided amongst TCP workers?
by Cody Herzog 23 Feb '18

23 Feb '18

Thanks very much for the quick replies, Alex and Brandon. The main reason I'm hitting a bottleneck is because my architecture is not optimal. I have a number of edge proxies which communicate with all my clients. The clients are usually distributed pretty evenly across all the proxies. On those proxies, client TCP connections are distributed pretty evenly across the TCP workers, so that's all fine. The problem occurs when the edge proxies communicate with the central registrar. When that happens, the SIP messages from a very large number of clients are all multiplexed onto a single TCP socket connection between the proxy and the registrar. That narrowing results in the registrar worker processes not being utilized efficiently. For example, say I have 3 edge proxies, and my registrar has 8 cores and 8 worker processes. I want to spread the message processing across all 8 workers, but I'm only able to utilize 3, because all the messages from a given edge proxy are being processed by a single TCP worker on the registrar. The long-term solution is to change my architecture. I should not be doing all the expensive work on a single central registrar. I'm planning to move to a mesh architecture, where all servers are the same, and the registration processing is divided amongst all the servers. That design makes sense, but it's more complex and will require more information sharing amongst the servers. I'm looking for a short-term improvement that will give me some breathing room, which led me to looking at the ASYNC module. >...one alternate suggestion that could help spread load on actual Kamailio TCP workers is by firing up additional workers on alternate ports. That makes sense. I could have my central registrar listen on several different ports, and could perhaps use the dispatcher module on my edge proxies to try and evenly divide the traffic across those ports. I will look into that. Thanks again. -Cody

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How are SIP messages divided amongst TCP workers?
by Cody Herzog 23 Feb '18

23 Feb '18

Hello. I'm curious as to how SIP messages received over TLS are divided amongst the available TCP workers. Based on some searching, I was hoping and expecting that the messages would be load balanced amongst the TCP workers at the level of individual SIP messages. However, with my configuration, it seems that the work is load balanced at the TCP connection level. I will now elaborate on my basic architecture. I have several edge proxies to which the clients connect. Those proxies do not handle registration, or do much of anything, they just forward traffic to a central registrar server. On the central registrar server, it seems that a particular TCP worker is assigned to handle all the traffic arriving from a particular edge proxy. As long as the TCP connection between the servers remains open, it seems that the particular worker is locked into handling all traffic on that connection. Does that sound like expected behavior? That behavior is not ideal for me, because I would like to evenly divide the SIP message load across all the TCP workers on my central registrar. Perhaps I'm doing something bad in my config file that is preventing the load balancing from working at the SIP message level. If that behavior is expected, is there anything I can do to achieve more even load balancing? Perhaps the ASYNC module might work for my needs. It seems like I could use async_task_route() to divide certain messages evenly amongst the async workers. Does that sound reasonable? In my use case, certain messages require a lot of CPU time to perform crypto calculations, and I want those calculations to be distributed evenly across all CPU cores. Thanks. -Cody

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rtpengine codecs transcoding: performance
by Abdoul Osséni 23 Feb '18

23 Feb '18

Hello, Is there a study comparing the performance (quality and cpu/ram consumption) of codecs transcoding between rtpengine and asterisk/freeswith? Is rtpengine more efficient? Regards Abdoul

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RFC: db_redisusrloc module - review and how to deal with
by Daniel-Constantin Mierla 23 Feb '18

23 Feb '18

Hello, (cross-posting being something I want to get developers and users express their opinions). We were recently in a (lucky) situation to have two new modules submissions targeting more or less the same purpose: allowing to use Kamailio with a Redis backend via database API. One was submitted by Andreas Granig (Sipwise) and already merged with the name db_redis, because it was designed from the beginning as a generic DB connector, so the module can be used with auth_db, acc, usrloc, ... * https://www.kamailio.org/docs/modules/devel/modules/db_redis.html The second one was submitted by Surendra Tiwari (Plivo), initially having a naming conflict with db_redis, but renamed to db_redisusrloc, see the pull request at: * https://github.com/kamailio/kamailio/pull/1446 Now, this email is about deciding the way to go forward with the second module. It was designed to be used only for usrloc in the first phase, with many specific usrloc attributes hard coded inside db_redisusrloc. Surendra said (in a private chat) that the long term plan is to make it work for other modules. Anyhow, at this moment is very tied to usrloc, therefore the name of the module. Given that the backend (Redis) is not an SQL engine, mapping over Kamailio's DB API needs some schema definition (see the readme of db_redis) in order to make it generic and work for all our modules that use a DB backend. On the other hand, to squeeze the best of the backend, specially in no-SQL cases, having a dedicated DB connector module optimized for a specific module might help to get more performances/high-availability/scalability from the backend itself. In this case, for example the expires value for a contact record can be set inside redis, so kamailio module doesn't have to run a timer routine to clean up (it doesn't mean db_redisusrloc does it right now, I didn't have time for a proper review, just giving an example). Surendra said they use it in production for couple of months now and it is several times faster than using usrloc with db_postgres (iirc, not db_mysql) for db_mode=3 (database only mode). But of course, the reverse of the medal with a dedicated db connector for a module: it adds overhead to code maintenance (besides generic updates due to external library changes, I expect changing something relevant in usrloc, like adding new columns, would require updates in this module as well). So, there are few things I want feedback on: 1) how do you fill about splitting from a generic-only DB connectors to have also some dedicated ones? This is more from confusion point of view, as a general rule so far, we do not deny contributions if there are other options for same kind of feature (e.g., many lcr or nat traversal options). As long as the contributor is willing to maintain the code, we were fine. 2) I guess usrloc, presence and dialog modules would be the main suspects that would benefit for such dedicated connectors, in other cases might not worth adding dedicated connectors. Missing any other module one would like to squeeze more performances with a dedicated connector? 3) should we set a different naming policy for such modules, for example: use *dbs_* prefix instead *db_*, to suggest better it is a DataBase Specific connector? 4) Andreas said he plans to do some performance testing of usrloc module with the two modules and see the differences. Anyone else that wants to do it? It can be a good metric to see if it worth going one way or another? 5) Helping to review the pull request, specially if you use Redis, is appreciated. Personally I am very short in available time these days, next week I plan do to new Kamailio stable releases, so the schedule is not getting lighter in my side. Cheers, Daniel -- Daniel-Constantin Mierla www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - March 5-7, 2018, Berlin - www.asipto.com Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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Checking dispatcher gw state
by Daniel Greenwald 23 Feb '18

23 Feb '18

Is there a way thru kamctl or kamcmd to check which dispatcher gateways are currently inactive? "kamctl dispatcher show" doesn't seem to have that info and I can't find anything in the docs. Thanks

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How to Re-transmit the current Request when a negative reply arrives?
by Arun NV 21 Feb '18

21 Feb '18

I am using Kamailio 4.4. And I am forwarding an INVITE to my client. but sometimes this client will send a negative response.And I am able to drop that negative response from Kamailio. But I need to re-transmit the same request to the client again. How do I do that? Thank you, Arunbalan <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

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Return codes within a route
by Jeff Bilyk 20 Feb '18

20 Feb '18

Hello, Running into odd behaviour in Kamailio 5.0.2 and I'm hoping to clarify. I have a simple route that uses the textops functions subst and remove_hf. Other than that, there is nothing else done within the route. In some cases, the remove_hf function returns false as there are no matching headers. Documentation in https://www.kamailio.org/wiki/cookbooks/5.0.x/core#return seems to show that if there are no explicit return statements, the route should return 1. However, this route appears to be returning -1. My question is: if a function within a route returns a negative value, and there are no explicit return statements, will the entire route return -1 (as it appears is happening), or should the route return 1 as the core cookbook indicates? Thanks in advance, Jeff

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Kamailio 4.3 decrypting SIP-TLS
by Remsik,Robert 20 Feb '18

20 Feb '18

Hello! I'm working on setting up our kamailio instance to use TLS for inter-phone communication and so far I've been able to configure the GUI and get it to work which is great. However, I'm trying to grab a packet capture and decode the TLS session to get the SIP ladder (so I can troubleshoot issues) and so far I've been unable to. I've been following the article at: http://packetpushers.net/using-wireshark-to-decode-ssltls-packets/ and using the kamailio self-signed cert as I think that's the cert being used with no success. I'm getting the Cipher Suite: TLS_RSA_WITH_AES_256_CBC_SHA (0x0035) which doesn't use perfect forward secrecy so it should be able to be decoded. Is there a way to decode the kamailio TLS encoded communications so I can troubleshoot issues that may come up? Thank you in advance, Robert Robert Remsik Telecom Desk Phone: 970 491 7120 Robert.Remsik(a)colostate.edu

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