sr-users February 2014

sr-users@lists.kamailio.org

114 participants
158 discussions

Re: [SR-Users] FW: Regd. t_suspend() and t_continue()
by Shankar 21 Feb '14

21 Feb '14

Hi, We have found the root cause for the problem that was reported (refer below mail for details) in async module. Below is the brief description, - async_route("Resume", "1") - At time t, the async records are stored at slot 't+1' of async list. - Every second, async records from the async list are processed. - In function 'async_timer_exec', slot = ticks % ASYNC_RING_SIZE; since slot is based on the ticks and if the previous invocation of 'async_timer_exec' did not finish in time, the next tick is missed. Subsequent call to 'async_timer_exec' will be with t+2. Here slot t+1 will be missed and the same will be processed only during next cycle. That means the async records will be stored for the next 100 seconds before they are actually processed. TM module will drop those timed out transactions and hence the error "t_continue: transaction not found" Now we have modified the code in such a way that slot is incremented sequentially irrespective of the ticks that is sent to the function 'async_timer_exec' function. This way we do not see any call failures and all our load runs are successful. If someone is interested we can share the code as well. Regards, Shankar From: Shankar [mailto:shankar.rk@plintron.com] Sent: Thursday, January 23, 2014 12:18 PM To: 'Jason Penton'; 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List' Subject: RE: [SR-Users] FW: Regd. t_suspend() and t_continue() Hi, >From our repeated load tests what we can conclude irrespective of the number of simultaneous calls, there is always this error "t_continue: transaction not found" occurring. If I run say 20 cps, then after running 5000 calls, we observe exactly 20 calls failing with the above error. We doubt that there is something happening during a particular point in time (for a second) which impacts the saving of those new transactions into shared memory. For 10 cps run, we observe exactly 10 call failures. We repeated with different cps and found that error is exactly equal to the cps being run. Any configuration we are missing. Anyone can help? Regards, Shankar From: Shankar [mailto:shankar.rk@plintron.com] Sent: Tuesday, January 21, 2014 3:09 PM To: 'Jason Penton'; 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List' Subject: FW: [SR-Users] FW: Regd. t_suspend() and t_continue() Hi Jason, Below is our config, route[LOCATION] { if(is_method("INVITE")) { if(!route(FROMCSCF)) { setflag(FLT_ACC); setflag(FLT_ACCFAILED); dlg_manage(); dlg_setflag("4"); async_route("RESUME", "1"); exit; } } } route[RESUME] { route(TO_LOCATION); // here t_relay to REGISTRAR is done for user lookup. exit; } Regards, Shankar Date: Tue, 21 Jan 2014 11:14:21 +0200 From: Jason Penton <jason.penton(a)smilecoms.com> To: "Kamailio (SER) - Users Mailing List" <sr-users(a)lists.sip-router.org> Subject: Re: [SR-Users] FW: Regd. t_suspend() and t_continue() Message-ID: <CAE=KcrghqJHgnGDxqS1fYvUzM=HqRAcKWfEAsNJjm8xUDCq68w(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" We use it heavily, but not using the async module - we use it directly from the IMS code. Can you please provide your config (or a relevant snippet) file so I can see what exactly you are testing/trying to do Cheers jason From: Shankar [mailto:shankar.rk@plintron.com] Sent: Tuesday, January 21, 2014 2:25 PM To: 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List' Subject: RE: [SR-Users] FW: Regd. t_suspend() and t_continue() Hi, Anyone who had used t_suspend() and t_continue() can share the performance details? I tried async module with one sec sleep time. I tried only 5 calls per second but still it was not successful. After sometime I see below logs, Jan 21 13:51:55 PLT-RA-RD-W167A PCscf[16520]: ERROR: tm [t_suspend.c:128]: t_continue(): ERROR: t_continue: transaction not found Jan 21 13:52:49 PLT-RA-RD-W167A last message repeated 15 times Jan 21 13:59:38 PLT-RA-RD-W167A last message repeated 12 times Jan 21 14:13:03 PLT-RA-RD-W167A last message repeated 5 times Any configuration changes can help here? Regards, Shankar From: Shankar [mailto:shankar.rk@plintron.com] Sent: Wednesday, January 15, 2014 1:26 PM To: 'Jason Penton' Cc: 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List' Subject: RE: [SR-Users] FW: Regd. t_suspend() and t_continue() Hi Jason, I am using 4.0.2 Regards, Shankar From: Jason Penton [mailto:jason.penton@smilecoms.com] Sent: Wednesday, January 15, 2014 1:21 PM To: Shankar Cc: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List Subject: Re: [SR-Users] FW: Regd. t_suspend() and t_continue() Hi Shankar, What version of Kamailio are you running? Kamailio -V Cheers Jason On Wed, Jan 15, 2014 at 6:58 AM, Shankar <shankar.rk(a)plintron.com> wrote: Hi Jason, Please find below my response inline, I have some questions for you as we have used suspend/continue quite a lot in the IMS code and don't have any leaks. Firstly, why are you using pkg_mem for your hash_id and label? Remember that you will be in 2 different processes in the suspend and continue portions of the code... so pkg_mem will not work - you should use shm_mem instead. [Shankar] We use pkg_mem because we are invoking t_continue from the same process ( using thread ). Secondly, how are you using top to tell that you have a leak? Kamailio's memory is internally managed. [Shankar] After running for say 20minutes, we get out of shared memory error. Also in top output we observed incremental increase in the shared usage of shared memory for the process. Cheers Jason On Mon, Jan 13, 2014 at 1:29 PM, Shankar <shankar.rk(a)plintron.com> wrote: > Re-sending without the attachment. > > > > *From:* Shankar [mailto:shankar.rk@plintron.com] > *Sent:* Monday, January 13, 2014 4:57 PM > *To:* 'sr-users(a)lists.sip-router.org' > *Subject:* Regd. t_suspend() and t_continue() > > > > Hi, > > > > We are trying out the t_suspend() and t_continue() in our test setup. > We are facing memory leak ( both shm and pkg as per top command results). > > > > Please find below the scenario, > > > > 1) Do a t_newtran() > > 2) Allocate pkg memory for hashid and label. > > 3) Call t_suspend() > > 4) Do t_continue() when async result is available > > 5) De-allocate pkg memory reserved for hashid and label > > 6) Do a t_relay() which forwards the sip message to another sip node. > > > > In the step (6) above, we see t_newtran() allocates one more time > shared memory for the same transaction. > > > > We tried t_release() after step (4) to release the transaction as > t_relay() anyways allocates new shared memory. Nothing helped. > > > > Please let me know what are the logs you would require to debug the same. > I am attaching syslog for this run. > > > > Regards, > > Shankar -- Jason Penton Senior Manager: Applications and Services Smile Communications Pty (Ltd) Mobile: +27 (0) 83 283 7000 Skype: jason.barry.penton <mailto:name.surname@smilecoms.com> jason.penton(a)smilecoms.com <http://www.smilecoms.com/> www.smilecoms.com <http://196.33.227.129/~smlcoms/sigs/pty/images/smile_signature_07_09.jpg> This email is subject to the disclaimer of Smile Communications at http://www.smilecoms.com/disclaimer

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Call Control for Credit and Rate
by Raj Roy Ghandhi 21 Feb '14

21 Feb '14

Hi, I want to implement the call control by 1. Validating the CLI and get the credit from DB 2. Check the Rate for the dialed number 3. set the call timeout for the call duration. ( credit/rate) 4. pass the call to remote PSTN GW Please guide me on this. Regards, Roy.

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Debian packages not updated since august 2013?
by Johan Wilfer 21 Feb '14

21 Feb '14

Hi, Looking at http://www.kamailio.org/wiki/packages/debs the suggestion is to use http://deb.kamailio.org/ for debian packages. But the last version of kamailio 4.0 here is 4.0.3, and 4.1 doesn't exist. The most files are last modified in 2013-08.. Here for example: http://deb.kamailio.org/kamailio/dists/wheezy/main/binary-amd64/ Is there a new server to get the deb-packages from or should I build from source from now on? /Johan

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Performance impact with AVP and VAR's
by Jijo 21 Feb '14

21 Feb '14

Hi All, I have around 300 AVP's and quite amount of VAR's are used in the config file? Does that impact performance?, If so how can i improve it? Thanks Jijo

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Re: [SR-Users] Issue with Async module
by Daniel-Constantin Mierla 20 Feb '14

20 Feb '14

Hello, thanks for reporting, I pushed a slightly different patch in master, 4.1 and 4.0 branches -- free is done even when ai->act is null. Cheers, Daniel On 20/02/14 15:13, Surendra wrote: > Hi Daniel, > > > I am using async module to continue the transaction in > asynchronously. But I am observing a leak in shared memory. Then i checked > the code, we are not freeing the async_item_t after calling t_continue. > Same this has checked with MEMDBG=1. > > Original code: > while(1) { > lock_get(&_async_list_head->ring[slot].lock); > ai = _async_list_head->ring[slot].lstart; > if(ai!=NULL) > _async_list_head->ring[slot].lstart = ai->next; > lock_release(&_async_list_head->ring[slot].lock); > > if(ai==NULL) > break; > if(ai->act!=NULL) > tmb.t_continue(ai->tindex, ai->tlabel, ai->act); > } > > > Changed code: > > while(1) { > lock_get(&_async_list_head->ring[slot].lock); > ai = _async_list_head->ring[slot].lstart; > if(ai!=NULL) > _async_list_head->ring[slot].lstart = ai->next; > lock_release(&_async_list_head->ring[slot].lock); > > if(ai==NULL) > break; > if(ai->act!=NULL) > { > tmb.t_continue(ai->tindex, ai->tlabel, ai->act); > shm_free(ai); /* Added by surendra */ > } > } > > Please correct this if I am wrong. > > > Regards > @surendra > > > > > _______________________________________________ > 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 -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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Re: [SR-Users] NAT traversal problem with Kamailio when trying to communicate between two different LANs
by Neo Quartz 20 Feb '14

20 Feb '14

Hi All, I installed Kamailio server on my ubuntu machine. And installed rtpproxy also in the same machine. I didm't make many changes to default configuration files, kamctlrc and kamailio.cfg. Now I am able to communicate between two SIP clients, if both sip clients are in the same LAN. But I am not able to communicate between one sip client in one LAN and the other SIP client in other LAN. Sip Call handling and ringing etc. is ok but there is no voice for this case. I don't have much experience in routing for NAT traversal. I tried to experiment with rtpproxy_manage function in kamailio.cfg file. But I was not successful. Please help me by providing any hints or pointers to proceed further. I am using only Kamailio and Rtpproxy. No other software like Asterisk or FreeSwitch. ************* These are defines I used in kamailio.cfg file: #!define WITH_MYSQL #!define WITH_AUTH #!define WITH_ALIASDB #!define WITH_USRLOCDB #!define WITH_ANTIFLOOD #!define WITH_NAT #!define WITH_PRESENCE listen ip address changed ******************* Kamailio is compiled with following modules: include_modules= db_mysql dialplan presence presence_xml ******** Regards, Sateesh

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understanding the sqlops module and kamailio children
by Uri Shacked 20 Feb '14

20 Feb '14

Hi, Following my issue with the above.... 1. Is there a way to see if a worker (child) is processing a transaction for too long (let's say 2-3 sec)? 2. Is there an option to see if the DB connection is alive? (I am familiar with db_mysql options) 3. If all workers are stuck on this "long" transaction, is there a Q for the new INVITES? Can I see how many are there? What I was experiencing is that when my DB was very slow, kamailio crashed after a while.... I will configure db_mysql to ping every 30 sec and timeout after 1 sec. Still, it can create a 3 sec delay for transactions. Any one has an idea? Using the ASYNC module can help here? Does it free the worker to deal with new requests? BR, Uri

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Asterisk Ignore "UNREGISTER" because retransmit
by pavel＠eremina.net 20 Feb '14

20 Feb '14

Hi, All! Try to register user in Kamailio and then relay REG massage to Asterisk. Asterisk register user and looks good. But when I send Unreg message to Kamailio, it unregister user successfully but Asterisk say: Message REGISTER Ignoring because retransmit (CSeq 1234 our CSeq 1234). Did someone know how solve this problem: i think that Asterisk need different CSeq for first REGISTER and Second after 401 code. dump my conf: At route[REGISTER]: if (!save("location")) { sl_reply_error(); } else { reg_fetch_contacts("location", "$tu", "cc"); $var(useragent) = $ulc(cc=>user_agent); xlog("L_INFO","EXpires in Contact: $ulc(cc=>expires)"); if ($ulc(cc=>expires)==0) { $var(query) = "insert into activity values (now(),'unr','"+$ci+"','"+$fu+"');"; sql_query("events", "$var(query)"); $var(string_temp) = "$(hdr(expires))"; xlog("L_INFO", "UNregistered $ru FROM $fu exp $var(string_temp)"); } else { if ($var(registered)==0) { $var(query) = "insert into activity values (now(),'reg','"+$ci+"','"+$fu+"');"; sql_query("events", "$var(query)"); } xlog("L_INFO", "Registered $ru FROM $fu exp $ulc(cc=>expires)"); } } xlog("L_INFO","DU(TD): $td"); if ($td == "mydomain.com") {route(TOASTERISK); } exit; } } route[TOASTERISK] { xlog("L_INFO","ROUTE to ASTERISK from $ru to $tu"); #append_branch(); t_on_failure("FAILAUTH"); $ru = "sip:"+ $td; consume_credentials(); route(RELAY); exit; } failure_route[FAILAUTH] { if (t_is_canceled()) { exit; } if (t_check_status("(401)|(407)")) { xlog("L_INFO", "Remote asked for authentication"); $avp(realm)=""; uac_auth(); } route(RELAY); }

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Issue with Async module
by Surendra 20 Feb '14

20 Feb '14

Hi Daniel, I am using async module to continue the transaction in asynchronously. But I am observing a leak in shared memory. Then i checked the code, we are not freeing the async_item_t after calling t_continue. Same this has checked with MEMDBG=1. Original code: while(1) { lock_get(&_async_list_head->ring[slot].lock); ai = _async_list_head->ring[slot].lstart; if(ai!=NULL) _async_list_head->ring[slot].lstart = ai->next; lock_release(&_async_list_head->ring[slot].lock); if(ai==NULL) break; if(ai->act!=NULL) tmb.t_continue(ai->tindex, ai->tlabel, ai->act); } Changed code: while(1) { lock_get(&_async_list_head->ring[slot].lock); ai = _async_list_head->ring[slot].lstart; if(ai!=NULL) _async_list_head->ring[slot].lstart = ai->next; lock_release(&_async_list_head->ring[slot].lock); if(ai==NULL) break; if(ai->act!=NULL) { tmb.t_continue(ai->tindex, ai->tlabel, ai->act); shm_free(ai); /* Added by surendra */ } } Please correct this if I am wrong. Regards @surendra

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Problem with special sip notify (trying to make central provisioning for endpoints)
by Pedro Niño 20 Feb '14

20 Feb '14

Hi, how are you all I have a lab setup for using Kamailio and asterisk, with realtime, and currently I am facing 2 problems. The first one, is when trying to get the phones to reboot. Asterisk send a notify with the message, reboot. But the phone answers with a 401, and asks for a digest. In a normal asterisk environment it would not be a problem, asterisk tries to answer with the user and password cipher with the digest. But because of using this design, asterisk sends the notify with the user and blank password (I am using realtime, so peers can register from kamailio with no password).of course this makes that the phone refuses, as the notify doesn't have the right password. Is there any way to make kamailio intercept the notify sent from the phone and answer with the right credentials? _------------------- Second: When having the users registered in the same scenario, and get an asterisk 'reload', and the users try to make a call before they re-register, only the first call make it thru Of course, as kamailio is in the middle, the users doesnt notice until they try to make a call. In asterisk, I keep seeing the kamailio trying to register and getting a 404. This keeps happening until I sent a sip reload at the asterisk side and wait for the users to register before making calls. Thanks for your time....

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sr-users February 2014