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[Kamailio-Users] new features: $T_req(pv) and $T_rpl(pv)
by Daniel-Constantin Mierla 09 Dec '08

09 Dec '08

Hello, the TM module introduces two new features: - access to SIP request attributes while processing a reply belonging to same transaction - access to SIP reply attributes while processing a request belonging to same transaction Functionalities come as pseudo-variables, $T_req(pv) and $T_rpl(pv) - where pv can be any pseudo-variable, check documents at: http://www.kamailio.org/dokuwiki/doku.php/pseudovariables:devel#tm_module_p… The new pseudo-variables can be used: - in failure_route to get the attributes of the reply causing the failure route. You can take decisions what to do with the request based on reply details - in onreply_route to get the attributes of the request. you can take decision what to do with the reply based on request attributes. - in acc to store data from reply - in C code (modules) Note that couple of PV are disabled for these cases (PV will return null) - these are the PV that alter/depend on the context of the processed message, like $Ts, $Tf (but you can use $TS and $TF), $time, destination set attributes. The $avp() will be current avps, as they are stored in a global list. Also, in case there is a timeout or other reply generated by kamailio itself, $T_rpl(pv) will return null as there is no real reply structure behind. Example, print the source ip of the reply in failure route: failure_route[1] { xlog("reply received from: $T_rpl($si)\n"); } Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com

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[Serusers] How to use the variable "src_ip"?
by Raman Chan 09 Dec '08

09 Dec '08

In the ser.cfg, we can output src_ip(%is) with "xlog" but how can I import this variable into the module of myself? Thanks, Raman

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[Serusers] SEMS 1.1.0 rc1 available
by Stefan Sayer 08 Dec '08

08 Dec '08

Hello, as promised there is a first release candidate for the 1.1 release of the SIP Express Media Server available: Source: http://ftp.iptel.org/pub/sems/1.1/rc1/src/sems-1.1.0-rc1.tar.gz Debian packages: http://ftp.iptel.org/pub/sems/1.1/rc1/packages/debian/ This RC1 was created from SVN rev 1193. With the version 1.1 SEMS gets - DSM state machine scripting (it's cool!) - an (experimental) ISDN gateway module - binrpc: MT (SER->) and connection pool (->SER) - MT xmlrpc server - controlled server shutdown - improved logging - g722 in 8khz compat mode - out of dialog request handling for modules & dialogs without sessions - audio file autorewind, AmAudio mixing - SIP and media IP separately configurable - UID/DID support for voicemail/-box/annrecorder - and quite some bugs and mem leaks fixed, documentation, etc. You are welcome to test this release candidate, and give feedback on the SEMS mailing list (sems(a)iptel.org), the semsdev list (semsde(a)iptel.org), or the bug tracker: http://tracker.iptel.org. Thanks to all contributions and patches, this time from Stefan Sayer, Raphael Coeffic, Grzegorz Stanislawski, Bogdan Pintea, Greger Teigre, Rui Jin Zheng, Alfred E Heggestad, Juha Heinanen, Peter Lemenkov, Robert Szokovacs, Jeremy A, Alex Gradinar Best Regards Stefan Sayer -- Stefan Sayer VoIP Services stefan.sayer(a)iptego.com www.iptego.com IPTEGO GmbH Am Borsigturm 40 13507 Berlin Germany Amtsgericht Charlottenburg, HRB 101010 Geschaeftsfuehrer: Alexander Hoffmann

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Re: [Kamailio-Users] Kamailio in Red Hat 4 with mysql and carrierroute]
by Juan Asencio 08 Dec '08

08 Dec '08

Henning Westerholt wrote: > On Monday 08 December 2008, Juan Asencio wrote: > >> Hi, I'm trying to install from source Kamailio on Red Hat 4, and I need >> to include mysql as a database and carrierroute. >> >> When I check on the directory of modules, I can't see mysql.so or >> carrierroute.so, how can I include them? >> >> Best regards, >> > > Hi Juan, > > have you compiled and installed the db_mysql and the carrierroute module? > There excluded in the default installation, because they need some extra > libraries. > > Cheers, > > Henning > Hi again, I have another question :) I have download the kamailio-1.4.1-notls_linux_i386.tar.gz Put it on the directory: /usr/src and there I did: tar zxvf kamai...tar.gz A list of directories and files are created, but I can't find the Makefile and I can't "make all" or "make" anything. In my small Linux experience, when I tar xvf... something.tar.gz a directory of something is created and then I usually can find the makefile there. Why I can't find it now? I'm trying to follow the instructions on http://www.kamailio.org/mos/view/Installation-Notes/ but I can't do it. Can anyone please give some suggestions? Thanks in advance, Juan.-

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[Kamailio-Users] Kamailio in Red Hat 4 with mysql and carrierroute
by Juan Asencio 08 Dec '08

08 Dec '08

Hi, I'm trying to install from source Kamailio on Red Hat 4, and I need to include mysql as a database and carrierroute. When I check on the directory of modules, I can't see mysql.so or carrierroute.so, how can I include them? Best regards, Juan.-

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[Kamailio-Users] using "substr()" function from TEXTOPS in "onreply_route" block
by Alex R.S.M 08 Dec '08

08 Dec '08

Hi, I was wondering if anyone has used "substr()" function from TEXTOPS in "onreply_route" block. This function works fine in "route" and "branch_route" blocks. However, it creates duplicate fields (instead of substituting) when being used in "onreply_route" blocks. I need to modify FROM field in "onreply_route" block. As far as I know, "uac_replace_from()" function works only in request_route block, so my only option is to use "substr()". Thanks, Alex R _________________________________________________________________ Proud to be a PC? Show the world. Download the “I’m a PC” Messenger themepack now. hthttp://clk.atdmt.com/MRT/go/119642558/direct/01/

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[Kamailio-Users] Route-problem, no 487 sent
by Magnus Burman 08 Dec '08

08 Dec '08

Something fishy is going on with my routing. If my SIP UA (91.XXX.XXX.80) hangs up before the receiving end (pstn on 212.YYY.YYY.84) answers, it keeps ringing forever. Below is my routing in regards to CANCEL and the ngrep output. If I understand things correctly, I should send a 487 Request Terminated back to the initiating UA (sip), and I would get a 487 Request Terminated from the pstn provider. I'm not sending the 487 to the UA, and I'm guessing I close the session before my pstn provider sends one to me, so I don't see it with ngrep? The big question is ofcourse what I need to do to get on track, sending the appropriate 487? route: -- #CANCEL processing if (is_method("CANCEL") || is_method("ACK")) { if (t_check_trans()) { setflag(1); if(!t_relay()) { sl_reply_error(); } } exit; }; ngrep output, comments starting with #: -- U 91.XXX.XXX.80:5060 -> 91.ZZZ.ZZZ.9:5060 CANCEL sip:6--------@91.ZZZ.ZZZ.9 SIP/2.0 Via: SIP/2.0/UDP 91.XXX.XXX.80:5060;branch=z9hG4bK1e22091bbd2d0a9b9e0f8de6553d2c27 From: "349--------"<sip:user1@91.ZZZ.ZZZ.9>;tag=XG6525p2-b915854d-1373157639 To: <sip:6--------@91.ZZZ.ZZZ.9> Call -ID: 6C8F-F261-374702698-E353C7B05C17-0006(a)91.XXX.XXX.80 CSeq: 10 CANCEL Max-Forwards: 70 User-Agent: XAVi/XG6525p2-1.6.7 Content-Length: 0 U 91.ZZZ.ZZZ.9:5060 -> 91.XXX.XXX.80:5060 SIP/2.0 200 canceling Via: SIP/2.0/UDP 91.XXX.XXX.80:5060;branch=z9hG4bK1e22091bbd2d0a9b9e0f8de6553d2c27 From: "349--------"<sip:user1@91.ZZZ.ZZZ.9>;tag=XG6525p2-b915854d-1373157639 To: <sip:6--------@91.ZZZ.ZZZ.9>;tag=bbd8f31c58bc6a3266ec5509a254d55b-cb96 Call-ID: 6C8F-F261-374702698-E353C7B05C17-0006(a)91.XXX.XXX.80 CSeq: 10 CANCEL Server: Kamailio (1.4.1-notls (i386/linux)) Content-Length: 0 # 487 Request Terminated from 91.ZZZ.ZZZ.9 to 91.XXX.XXX.80 ?? U 91.ZZZ.ZZZ.9:5060 -> 212.YYY.YYY.84:5060 CANCEL sip:346--------@212.YYY.YYY.84 SIP/2.0 Via: SIP/2.0/UDP 91.ZZZ.ZZZ.9;branch=z9hG4bKe214.208c19e6.0 From: "349--------"<sip:user1@91.ZZZ.ZZZ.9>;tag=XG6525p2-b915854d-1373157639 Call-ID: 6C8F-F261-374702698-E353C7B05C17-0006(a)91.XXX.XXX.80 To: <sip:6--------@91.ZZZ.ZZZ.9> CSeq: 10 CANCEL Max-Forwards: 70 User-Agent: Kamailio (1.4.1-notls (i386/linux)) Content-Length: 0 U 212.YYY.YYY.84:5060 -> 91.ZZZ.ZZZ.9:5060 SIP/2.0 200 OK Via: SIP/2.0/UDP 91.ZZZ.ZZZ.9:5060;branch=z9hG4bKe214.208c19e6.0 To: <sip:6--------@91.ZZZ.ZZZ.9>;tag=a439d513 From: "349--------" <sip:user1@91.ZZZ.ZZZ.9>;tag=XG6525p2-b915854d-1373157639 Call-ID: 6C8F-F261-374702698-E353C7B05C17-0006(a)91.XXX.XXX.80 CSeq: 10 CANCEL User-Agent: ENS2.2.122-IS2 Content-Length: 0 # 487 Request Terminated from 212.YYY.YYY.84 to 91.ZZZ.ZZZ.9 ?? Best Regards, Magnus

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[Kamailio-Users] new feature: re.subst transformation
by Daniel-Constantin Mierla 08 Dec '08

08 Dec '08

Hello, using the latest development work and the newest pseudo-variable&transformation framework (http://lists.kamailio.org/pipermail/users/2008-December/020918.html), the textops module offers a new class of transformation for regular expressions. By now, it implements {re.subst,expression} - ability to do Perl-like substitution of string value pseudo-variables: http://www.kamailio.org/dokuwiki/doku.php/transformations:devel#re.subst_ex… Here is an example to extract username part from R-URI using this transformation: $var(user) = $(ru{re.subst,/^sip:(.*)@(.*)/\1/}); Now, the subst operation becomes very handy, old tricks to copy in R-URI and use subst*() functions from textops module, or copy in avps and use avpops module are no longer required. This implementation can be used as example by developers to learn how to export new transformations from other modules. Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com

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[Kamailio-Users] important: transformations moved from core to pv module
by Daniel-Constantin Mierla 08 Dec '08

08 Dec '08

Hello, the pseudo-variable and transformation framework in core has been completed for upcoming v1.5.0 of Kamailio (OpenSER). The core has now only API to register, parse name, evaluate and set values for PV&T. All specific implementations have moved to PV module: http://kamailio.org/docs/modules/devel/pv.html The current architecture provides a flexible way to enhance the number PV&T available in config file without affecting the stability and the performance of core and main modules. As this number increased a lot, and will grow more, the API changed the indexing from a list to a hash table, offering faster lookup and quicker shorter up time. With this work done, a new functionality is available for developers: - they can export new transformations from their module. As example, check the pv or textops (new transformation to be announced in separate message) modules. The system is simple, you have to implement a function to parse the name of transformation and its parameter, plus a function to evaluate a transformation. Now core got some clean up, not that fat anymore, implementation of about 100 pseudo-variables and over 30 transformations was moved out (couple of thousands lines of code). This work is part of the efforts to increase the stability, performance and flexibility of the core, so that specific implementations do not affect typical use cases. As final note, remember to load the pv module from now on if you work with/need old core pseudo-variables or transformations. Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com

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[Kamailio-Users] new module: sqlops - sql operations
by Daniel-Constantin Mierla 08 Dec '08

08 Dec '08

Hello, the devel version (to be released as 1.5.0 in Q1 2009) includes now a new module: sqlops. It can be used to do raw sql queries in config file and play with the result data. Key features: * /many DB connections/ - the module can connect to many databases on different servers using different DB driver modules (mysql, postgres, ...) at the same time. * /many DB results/ - the module can store many results of different SQL queries in separate structures at the same time. Thus is possible to work in parallel with several DB results. * /access via pseudo-variables/ - the content of SQL query result is accessible via pseudo-variables. * /array indexes/ - fast access to result values via array possition: [row,column]. * /persistence in process space/ - a result can be used many times in same worker process. Query once, use many times. Here is an example of fetching and printing the content of a table: ... modparam("sqlops","sqlcon","ca=>mysql://openser:abc@localhost/openser") ... sql_query("ca", "select * from domain", "ra"); xlog("rows: $dbr(ra=>rows) cols: $dbr(ra=>cols)\n"); if($dbr(ra=>rows)>0) { $var(i) = 0; while($var(i)<$dbr(ra=>cols)) { xlog("--- SCRIPT: column[$var(i)] = $dbr(ra=>colname[$var(i)])\n"); $var(i) = $var(i) + 1; } $var(i) = 0; while($var(i)<$dbr(ra=>rows)) { $var(j) = 0; while($var(j)<$dbr(ra=>cols)) { xlog("[$var(i),$var(j)] = $dbr(ra=>[$var(i),$var(j)])\n"); $var(j) = $var(j) + 1; } $var(i) = $var(i) + 1; } } sql_result_free("ra"); ... Other advantages than the ones listed above against avp_db_query(): - does not mess up fields position if the value in db is null - use private memory, no locking - does not iterate through linked (avp) list to get each field, direct reference to each data structure in result array, thus much faster. More info at: http://kamailio.org/docs/modules/devel/sqlops.html Testing and feedback is appreciated. Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com

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