sr-dev June 2013

sr-dev@lists.kamailio.org

33 participants
235 discussions

Outbound flow failure handling merged to master

by Hugh Waite

Hello, As you will see I have merged my branch back into master. These changes add a new event route [tm:branch-failure] to the tm module which is run when any failure response is received on a transaction. The event_route uses a new route type BRANCH_ROUTE which limits the functions that can be run in the route. The functions t_check_status(), t_next_contact_flow(), t_relay() and unregister() can be used in this route. A new pv $T_reply_ruid is accessible in this route which can be used to unregister a single contact entry. The following example route can be used on a registrar to handle failed or invalid flows: event_route[tm:branch-failure] { xlog("L_INFO", "event_route[tm:branch-failure]\n"); if (t_check_status("430|403")) { if (!unregister("location", "$tu", "$T_reply_ruid")) { xlog("L_WARN", "failed to unregister $tu with ruid $T_reply_ruid\n"); } if (!t_next_contact_flow()) { xlog("L_INFO", "No more flows\n"); } else { xlog("L_INFO", "Next flow\n"); t_relay(); } } } Any bugs, memory leaks etc. let me know! Hugh -- Hugh Waite Principal Design Engineer Crocodile RCS Ltd.

7 years, 5 months

Using t_suspend()/t_continue() multiple times on the same transaction

by Peter Dunkley

Hi, I am trying to use t_suspend()/t_continue() multiple times on the same transaction. Calling t_suspend() more than once works, but the second time I call t_continue() the transaction is killed and a 500 response is sent. It is the "if (branch == t->nr_of_outgoings)" check from the code fragment below (from t_suspend.c:t_continue()) that results in the transaction being killed - you can see the debug/error line I added to determine this in the fragment. Is using t_suspend()/t_continue() multiple times something that should work? Thanks, Peter if (t->uas.status < 200) { /* No final reply has been sent yet. * Check whether or not there is any pending branch. */ for ( branch = 0; branch < t->nr_of_outgoings; branch++ ) { if ((t->uac[branch].request.buffer != NULL) && (t->uac[branch].last_received < 200) ) break; } if (branch == t->nr_of_outgoings) { /* There is not any open branch so there is * no chance that a final response will be received. */ ret = 0; LM_ERR("branch == t->nr_of_outgoings\n"); goto kill_trans; } } -- Peter Dunkley Technical Director Crocodile RCS Ltd

9 years, 9 months

default config: do loose_route() for in-dialog NOTIFY as per new RFC 6665

by Iñaki Baz Castillo

Hi, the new RFC 6665 mandates that the subscription dialog is made *after* the first NOTIFY from the UAS (rather than after the 200 to the initial SUBSCRIBE). This means that the UAC MUST take the route set from the *first* received NOTIFY (instead of taking it from the 200 to the initial SUBSCRIBE). Therefore a proxy compliant with RFC 6665 MUST always add RR to in-dialog NOTIFY requests and thus, I propose that the default SR script file implements it. Regards. -- Iñaki Baz Castillo <ibc(a)aliax.net>

10 years, 2 months

json and jsonrpc-c modules

by Matthew Williams

Hi, The Flowroute development team is pleased to announce a complete overhaul of the json and jsonrpc-c modules, originally authored two years ago. Credit should first and foremost go to Joe Hillenbrand who did most of the new development. Jordan Levy (our CTO) and I were also involved in the updates and QA to a lesser extent. The updated modules are available in the mgw/json branch. In addition to the Kamailio modules, we have developed a Twisted Python library to complement the jsonrpc-c module: https://github.com/flowroute/txjason We would be interested in any critiques of the API, documentation, and code. Please let us know if you use these modules and especially if you find any bugs. We hope to merge this into master once we have had it in production for awhile and (ideally) have received some feedback from other users. Feel free to contact either Joe (joe(a)flowroute.com) or me directly with any questions or comments. -- Matthew Williams Flowroute LLC http://www.flowroute.com/

10 years, 7 months

t_suspend and t_continue in tm module

by Richard Good

Hi We are using the t_suspend and t_continue functionality to asynchronously send Diameter messages. This works nicely when we suspend and resume on a SIP request. However in some circumstances we want to send a Diameter message on a SIP response. I have found that the SIP responses continue to be relayed despite being suspended and returning 0 to the cfg file. I am investigating the cause but before I get any deeper does anyone know if the t_suspend and t_continue functionality in the tm module can be used on a SIP response? Regards Richard. This email is subject to the disclaimer of Smile Communications (PTY) Ltd. at http://www.smilecoms.com/disclaimer

10 years, 9 months

the new memcache module

by Dragos Oancea

Hi Henning & Charles, So far the module performed pretty good for us. But there might be a problem, when I shut down Kamailio I see this in the logs : ERROR: memcached [memcached.c:255]: mod_destroy(): memory manager callbacks not removed, returned INVALID ARGUMENTS but continue anyway It also dumps core at shutdown: http://pastebin.com/5uJJ3tp4 Regards, Dragos ________________________________ From: Henning Westerholt <hw(a)kamailio.org> To: sr-users(a)lists.sip-router.org Cc: Charles Chance <charles.chance(a)sipcentric.com>; Dragos Oancea <droancea(a)yahoo.com> Sent: Friday, June 14, 2013 6:24 PM Subject: Re: [SR-Users] memcache problem - reporting protocol error Am Freitag, 7. Juni 2013, 12:07:00 schrieb Charles Chance: > Yes, that should work fine. > > Cheers, Hello Dragos, just one thing to add - if you find any issues with the master version of the module, please report to our developer list that we could take a look. Best regards, Henning Westerholt

10 years, 9 months

git:master: memcached: fix crash during shutdown, make used memory manager configurable

by Henning Westerholt

Module: sip-router Branch: master Commit: df41d7f4e0cd8bd0c328f94360a6b3a3f3e9d59b URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=df41d7f… Author: Henning Westerholt <hw(a)kamailio.org> Committer: Henning Westerholt <hw(a)kamailio.org> Date: Sun Jun 30 15:42:17 2013 +0200 memcached: fix crash during shutdown, make used memory manager configurable * fix a crash during shutwdown, as reported from Dragos Oancea, droancea at yahoo dot com * make memcache client library memory manager configurable, as default use the one from the system as this is probably the most tested configuration in the field * the internal memory manager should provide a better performance in this case, but as the old library has some issues with the internal one, we better stay with this * documentation will be provided in the next commit --- modules/memcached/memcached.c | 45 ++++++++++++++++++++--------------------- modules/memcached/memcached.h | 4 ++- test/unit/45.cfg | 1 + 3 files changed, 26 insertions(+), 24 deletions(-) diff --git a/modules/memcached/memcached.c b/modules/memcached/memcached.c index 32852d9..86a08b3 100644 --- a/modules/memcached/memcached.c +++ b/modules/memcached/memcached.c @@ -43,7 +43,9 @@ unsigned int mcd_expire = 0; /*! cache storage mode, set or add */ unsigned int mcd_mode = 0; /*! server timeout in ms*/ -int mcd_timeout = 5000; +unsigned int mcd_timeout = 5000; +/*! Internal or system memory manager, default is system */ +unsigned int mcd_memory = 0; /*! memcached handle */ struct memcached_st *memcached_h; /*! memcached server list */ @@ -76,9 +78,10 @@ static pv_export_t mod_pvs[] = { */ static param_export_t params[] = { {"servers", STR_PARAM, &mcd_srv_str }, - {"expire", INT_PARAM, &mcd_expire }, + {"expire", INT_PARAM, &mcd_expire }, {"timeout", INT_PARAM, &mcd_timeout }, {"mode", INT_PARAM, &mcd_mode }, + {"memory", INT_PARAM, &mcd_memory }, {0, 0, 0} }; @@ -105,10 +108,12 @@ struct module_exports exports = { /*! * \brief Wrapper functions around our internal memory management * \param mem freed memory + * \note pkg_free does not allow NULL pointer as standard free, therefore we check it here * \see pkg_free */ static inline void mcd_free(memcached_st *ptr, void *mem, void *context) { - pkg_free(mem); + if (mem) + pkg_free(mem); } @@ -201,17 +206,21 @@ static int mod_init(void) { } LM_DBG("allocated new server handle at %p", memcached_h); - LM_DBG("set memory manager callbacks"); - rc = memcached_set_memory_allocators(memcached_h, (memcached_malloc_fn)mcd_malloc, + if (mcd_memory == 1) { + LM_INFO("Use internal kamailio memory manager for memcached client library"); + rc = memcached_set_memory_allocators(memcached_h, (memcached_malloc_fn)mcd_malloc, (memcached_free_fn)mcd_free, (memcached_realloc_fn)mcd_realloc, (memcached_calloc_fn)mcd_calloc, NULL); - if (rc == MEMCACHED_SUCCESS) { - LM_DBG("memory manager callbacks set"); + if (rc == MEMCACHED_SUCCESS) { + LM_DBG("memory manager callbacks set"); + } else { + LM_ERR("memory manager callbacks not set, returned %s.\n", memcached_strerror(memcached_h, rc)); + return -1; + } } else { - LM_ERR("memory manager callbacks not set, returned %s.\n", memcached_strerror(memcached_h, rc)); - return -1; + LM_INFO("Use system memory manager for memcached client library"); } - + servers = memcached_server_list_append(servers, server, atoi(port), &rc); if (memcached_behavior_set(memcached_h, MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT, mcd_timeout) != MEMCACHED_SUCCESS) { @@ -241,20 +250,10 @@ static int mod_init(void) { * \brief Module shutdown function */ static void mod_destroy(void) { - memcached_return rc; - if (servers != NULL) memcached_server_list_free(servers); - /* unset custom memory manager to enable clean shutdown of in system memory allocated server structure */ - LM_DBG("remove memory manager callbacks"); - rc = memcached_set_memory_allocators(memcached_h, NULL, NULL, NULL, NULL, NULL); - if (rc == MEMCACHED_SUCCESS) { - LM_DBG("memory manager callbacks removed"); - } else { - LM_ERR("memory manager callbacks not removed, returned %s but continue anyway.\n", memcached_strerror(memcached_h, rc)); - } - - if (memcached_h != NULL) - memcached_free(memcached_h); + /* Crash on shutdown with internal memory manager, even if we disable the mm callbacks */ + if (mcd_memory != 1 && memcached_h != NULL) + memcached_free(memcached_h); } diff --git a/modules/memcached/memcached.h b/modules/memcached/memcached.h index 4d9a875..407d39f 100644 --- a/modules/memcached/memcached.h +++ b/modules/memcached/memcached.h @@ -35,7 +35,9 @@ extern unsigned int mcd_expire; /*! cache storage mode, set or add */ extern unsigned int mcd_mode; /*! server timeout */ -extern int mcd_timeout; +extern unsigned int mcd_timeout; +/*! Internal or system memory manager */ +extern unsigned int mcd_memory; /*! memcached handle */ extern struct memcached_st* memcached_h; /*! memcached server list */ diff --git a/test/unit/45.cfg b/test/unit/45.cfg index f2b8c93..a170672 100644 --- a/test/unit/45.cfg +++ b/test/unit/45.cfg @@ -29,6 +29,7 @@ loadmodule "xlog/xlog.so" modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo") modparam("usrloc", "db_mode", 3) modparam("usrloc", "db_url", "mysql://kamailio:kamailiorw@localhost/kamailio") +modparam("memcached", "memory", 0) #-----------------------Routing configuration---------------------------------# route{

10 years, 9 months

git:master: memcached: document new memory parameter for memory manager setting

by Henning Westerholt

Module: sip-router Branch: master Commit: b252d4ec79446bd915fe2eb6bcf8556d3275343c URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=b252d4e… Author: Henning Westerholt <hw(a)kamailio.org> Committer: Henning Westerholt <hw(a)kamailio.org> Date: Sun Jun 30 16:06:16 2013 +0200 memcached: document new memory parameter for memory manager setting --- modules/memcached/README | 21 +++++++++++++++++++++ modules/memcached/doc/memcached_admin.xml | 26 ++++++++++++++++++++++++++ 2 files changed, 47 insertions(+), 0 deletions(-) diff --git a/modules/memcached/README b/modules/memcached/README index 1aeb1f9..730fa4d 100644 --- a/modules/memcached/README +++ b/modules/memcached/README @@ -27,6 +27,7 @@ Henning Westerholt 4.2. expire (integer) 4.3. mode (integer) 4.4. timeout (integer) + 4.5. memory (integer) 5. @@ -42,6 +43,7 @@ Henning Westerholt 1.6. Set expire parameter 1.7. Set mode parameter 1.8. Set timeout parameter + 1.9. Set memory parameter Chapter 1. Admin Guide @@ -64,6 +66,7 @@ Chapter 1. Admin Guide 4.2. expire (integer) 4.3. mode (integer) 4.4. timeout (integer) + 4.5. memory (integer) 5. @@ -176,6 +179,7 @@ xlog("stored value is $mct(test)"); # will return <null> 4.2. expire (integer) 4.3. mode (integer) 4.4. timeout (integer) + 4.5. memory (integer) 4.1. servers (str) @@ -238,6 +242,23 @@ modparam("memcached", "mode", 0) modparam("memcached", "timeout", 10000) ... +4.5. memory (integer) + + The memory mode for the memcached client library. The library can use + the system memory manager or the internal memory manager from Kamailio. + The system memory manager configuration is the default, most + implementations (like other projects) probably use this approach as + well. The internal memory configuration should be faster and protects + better against memory leaks that could bring down your server, as the + available memory pool is limited by the Kamailio configuration. + + Default value is “0” (use system memory manager). + + Example 1.9. Set memory parameter +... +modparam("memcached", "memory", 1) +... + 5.1. Exported pseudo-variables 5.1. Exported pseudo-variables diff --git a/modules/memcached/doc/memcached_admin.xml b/modules/memcached/doc/memcached_admin.xml index 87dd8bb..29f17e9 100644 --- a/modules/memcached/doc/memcached_admin.xml +++ b/modules/memcached/doc/memcached_admin.xml @@ -241,6 +241,32 @@ modparam("memcached", "timeout", 10000) </programlisting> </example> </section> + <section> + <title><varname>memory</varname> (integer)</title> + <para> + The memory mode for the memcached client library. The library can + use the system memory manager or the internal memory manager from + &kamailio;. The system memory manager configuration is the default, + most implementations (like other projects) probably use this + approach as well. The internal memory configuration should be + faster and protects better against memory leaks that could bring + down your server, as the available memory pool is limited by the + &kamailio; configuration. + </para> + <para> + <emphasis> + Default value is <quote>0</quote> (use system memory manager). + </emphasis> + </para> + <example> + <title>Set <varname>memory</varname> parameter</title> + <programlisting format="linespecific"> +... +modparam("memcached", "memory", 1) +... + </programlisting> + </example> + </section> </section> <section> <section>

10 years, 9 months

git:master: memcached: update module docs, patch from Charles Chance, charles dot chance at sipcentric dot com

by Henning Westerholt

Module: sip-router Branch: master Commit: 736fab01bafba394f4b81aa20a63bf827baa2a13 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=736fab0… Author: Henning Westerholt <hw(a)kamailio.org> Committer: Henning Westerholt <hw(a)kamailio.org> Date: Sun Jun 30 15:50:29 2013 +0200 memcached: update module docs, patch from Charles Chance, charles dot chance at sipcentric dot com --- modules/memcached/README | 79 ++++++++++++++--------------- modules/memcached/doc/memcached_admin.xml | 40 ++++++++------- 2 files changed, 59 insertions(+), 60 deletions(-) Diff: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commitdiff;h=736…

10 years, 9 months

ASSISTANCE Required

by Piyush.Bansal＠relianceada.com

Hi, I am using SER iptel as a SIP proxy. I have few doubts regarding ser.cfg configuration file. 1. I am having two config variables, say $a and $b. Can't I do any comparison of the two in any if loop? e.g. [if ($a == $b)] or something similar. 2. I exported a function from a module say func1( ). It works perfectly fine if I pass a static value in it but corrupts the value if I pass a variable thru it.e.g. func1("11") will work fine but $a = '11' and func1("%$a") will not work. 3. I want to add a new header field in 200 OK response to REGISTER. How can I do that? Please help. Regards --Piyush Thanks and Regards, --Piyush Bansal NATT - I & T, Reliance Tech Services, Delhi, India (M) +91-93502-30362 Enjoy the widest reach of 3G services across India only On Reliance www.rcom.co.in/3G The information contained in this electronic message (email) and any attachments to this email are intended for the exclusive use of the addressee(s) and access to this email by any one else is unauthorised. The email may contain proprietary, confidential or privileged information or information relating to Reliance Group. If you are not the intended recipient, please notify the sender by telephone, fax, or return email and delete this communication and any attachments thereto, immediately from your computer. Any dissemination, distribution, or copying of this communication and the attachments thereto (in whole or part), in any manner, is strictly prohibited and actionable at law. The recipient acknowledges that emails are susceptible to alteration and their integrity can not be guaranteed and that Company does not guarantee that any e-mail is virus-free and accept no liability for any damage caused by any virus transmitted by this email.

10 years, 10 months

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sr-dev June 2013