sr-users July 2009

sr-users@lists.kamailio.org

71 participants
105 discussions

[Kamailio-Users] rfc: xavp - extended avp
by Daniel-Constantin Mierla 29 Jul '09

29 Jul '09

Hello, some time ago I created a new branch in GIT named 'daniel/xavp' that includes code for a new pseudo-variable class 'xavp' - name being a shortcut to 'extended attribute value pair'. I collected some design details in wiki: http://sip-router.org/wiki/devel/xavp It is not a replacement for current AVP api implementation, although in the future can replace it. In the past we had couple of discussions about the limitations of avps which I tried to overcome. Here are some highlights of xavp design: - string names only - various tests showed that having the complex addressing scheme with integer id and string name does not pay off performance gains. XAVP computes and integer id for each name that is used to speed up comparison - possibility to store more data types - AVP allow string and integer data types. More can be handled by XAVP, including a generic data type where you can build your own structure and store it in the list. This is good for example to store custom structures for transaction lifetine -- right now dialog module needs to store reference to dialog structure. Optimizations can be done for any case of serial forking -- uri, dst uri, q, etc can be stored in a structure without a need to parse and build it from an encoded value stored in one or many avps - possibility to group XAVPs inside another XAVP - practically is building lists of XAVPs. This should overcome issues with naming conflicts between modules - e.g., dispatacher module can group its avps in a list named "dispatacher", lcr module in a list named 'lcrl, then there can be XAVP with name 'uri' in both lists, without the risk of misusage. Another benefit would be reducing the number of parameters, right now each module exports a parameter to set the name for each AVP, with xavp there is need for one parameter to set the name of the list, then inside that list the module is free to use predefined names without the risk of overlapping. - xavp having value integer or string can be used directly in config, whether they are in a sublist or not Check the wiki (link above) for more. Looking forward for comments, suggestions and improvements. Cheers, Daniel -- Daniel-Constantin Mierla * SIP Router Bootcamp * Kamailio (OpenSER) and Asterisk Training * Berlin, Germany, Sep 1-4, 2009 * http://www.asipto.com/index.php/sip-router-bootcamp/

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[Kamailio-Users] debate: module interface
by Daniel-Constantin Mierla 29 Jul '09

29 Jul '09

Hello, the new sip router core and librarization of kamailio management (MI) and statistics interfaces affected the module interface. At this time, although all the fields are still in the module interface, some are passive: - mi commands exports - statistics exports - extra processes The modules in the public GIT repository use the either mod_init or mod_register to export them, so everything should work as expected. fyi: if you didn't know so far - mod_register is a function automatically called when a module is loaded, giving the possibility to export components from module in very early stage, e.g., transfomations must be exported via mod_register since they are lookep up while parsing the routing blocks -- mod_register is available in kamailio since 1.5, back ported from sip router core, you just need to implement it in the module, it is not part of module interface. Back to module interface, the three fields mislead private module implementations as everything compiles ok, but at startup the fields are not actually exported. I propose to remove them and document the transition process to new interface, which is practically couple of code lines. It this way people migrating private stuff will notice the change and update. Since we are here and we have to go through each K module and remove the fields from the module interface, maybe we can create a single interface for k and s modules. Doing a short analysis and considering the above three fields removed from k interface, then: - K interface has extra - dlopen flags - needed to specify how the .so is open, required so far by perl module, iirc - PV exports - the list of pseudo-variables exported by module - the cmd (function) exports structure has a field to specify a free fixup function (not implemented for all exported commands). The goal is to allow calling functions exported by modules for higher application languages, like perl so far, where it is needed to free the memory allocated by fixup function - S interface has extra - rpc exports - exported rpc commands - onbreak function - is this used?!? couldn't find docs about or a use case, so I consider it obsolete Then common interface would be: - name - dlopen flags - mod parameters - mod commands with free fixup - rpc commands - PV exports - mod init - child init - mod destroy - onreply callback Probably we can normalize it a bit more, comments and suggestions are welcome! Thanks, Daniel -- Daniel-Constantin Mierla * SIP Router Bootcamp * Kamailio (OpenSER) and Asterisk Training * Berlin, Germany, Sep 1-4, 2009 * http://www.asipto.com/index.php/sip-router-bootcamp/

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[Serusers] 400 bad request of SUBSCRIBE
by 静于 29 Jul '09

29 Jul '09

hi I use pa module to support SUBSCRIBE request which Event header is "presence", and the function I used in ser.cfg is as follow : if (method=="SUBSCRIBE") { if (!t_newtran()) { log(1, "newtran error\n"); sl_reply_error(); }; handle_subscription("registrar"); break; }; But the response of this request is 400 error while parsing header Server: SIP Express Route (0.9.6(i386/linux)) I find there is no place in source code to parse Server header I am I miss something in ser.cfg or any other modules should be loaded ? Could any one tell me why? ___________________________________________________________ 好玩贺卡等你发，邮箱贺卡全新上线！ http://card.mail.cn.yahoo.com/

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[Kamailio-Users] Fwd: Re: RES: Can someone help me?
by Raúl Alexis Betancor Santana 28 Jul '09

28 Jul '09

Sorry Rafael, the .cfg is not big ... moreover it's a simple .cfg compared with other ones I worked on. Also I will not review/debug your config for you. Just try to do a flow analisys and check where you are wrong. With a fast read .. I could tell you that you are having troubles with the failure routes at least .. -- Raúl Alexis Betancor Santana Dimensión Virtual

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Re: [Kamailio-Users] RES: Can someone help me?
by Rafael Moreno Gomes 28 Jul '09

28 Jul '09

Hi Raul Here it is, # ----------- global configuration parameters ------------------------ debug=3 fork=yes log_stderror=yes children=1 disable_tcp=no log_facility=LOG_LOCAL0 # ------------------ module loading ---------------------------------- #set module path mpath="/usr/lib/kamailio/modules/" loadmodule "sl.so" loadmodule "tm.so" modparam("tm", "fr_timer", 5) modparam("tm", "fr_inv_timer_avp", "$avp(i:704)") loadmodule "rr.so" loadmodule "usrloc.so" loadmodule "maxfwd.so" loadmodule "textops.so" loadmodule "xlog.so" loadmodule "avpops.so" loadmodule "registrar.so" loadmodule "uri_db.so" loadmodule "db_mysql.so" loadmodule "siputils.so" loadmodule "auth.so" loadmodule "auth_db.so" loadmodule "mi_fifo.so" loadmodule "acc.so" loadmodule "pv.so" modparam("mi_fifo", "fifo_name", "/tmp/openser_fifo") loadmodule "lcr.so" modparam("lcr", "db_url", "mysql://root:mypass@localhost/openser") modparam("lcr", "gw_uri_avp", "$avp(i:709)") modparam("lcr", "ruri_user_avp", "$avp(i:500)") modparam("lcr", "rpid_avp", "$avp(i:302)") modparam("lcr", "flags_avp", "$avp(i:712)") # ------------------------- request routing logic ------------------- route{ if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); exit; } route(4); if (has_totag()) { if (loose_route()) { if (is_method("BYE")) { setflag(1); setflag(3); } route(1); } else { if (is_method("SUBSCRIBE") && uri == myself) { route(2); exit; } if ( is_method("ACK") ) { if ( t_check_trans() ) { t_relay(); exit; } else { exit; } } sl_send_reply("404","Not here"); } exit; } if (is_method("CANCEL")) { if (t_check_trans()) t_relay(); exit; } t_check_trans(); route(3); if (!is_method("REGISTER|MESSAGE")) record_route(); if (is_method("INVITE")) { setflag(1); } if (!uri==myself) if( is_method("PUBLISH|SUBSCRIBE")) route(2); if (is_method("REGISTER")) { if (!save("location")) sl_reply_error(); exit; } if ($rU==NULL) { # request with no Username in RURI sl_send_reply("484","Address Incomplete"); exit; } if (!lookup("location")) { switch ($retcode) { case -1: case -3: t_newtran(); t_reply("404", "Not Found"); exit; case -2: sl_send_reply("405", "Method Not Allowed"); exit; } } setflag(2); route(1); } route[1] { if (!t_relay()) { sl_reply_error(); }; exit; } route[2] { if (!load_gws()) { sl_send_reply("503", "Unable to load gateways"); exit; } else { $var(i) = 0; while(is_avp_set("$(avp(i:709)[$var(i)])")) { xlog("L_INFO", "loading gw_uri_avp[$var(i)]='$(avp(i:709)[$var(i)])'\n"); $var(i) = $var(i) + 1; }; if(is_avp_set("$avp(i:709)")) { xlog("L_INFO", "trying gateway '$avp(i:709)'\n"); } else { xlog("L_INFO", "no available gateways ...\n"); }; if (next_gw()) { xlog("L_INFO", "ruri_user_avp='$avp(i:500)'\n"); t_on_failure("2"); route(1); } else { sl_send_reply("503", "No available gateways"); exit; }; }; exit; } failure_route[2] { xlog("L_INFO", "entering failure_route[2] for reply code '$T_reply_code'\n"); if (t_check_status("408|50[34]")) { if(is_avp_set("$avp(i:709)")) { xlog("L_INFO", "trying next gateway '$avp(i:709)'\n"); } else { xlog("L_INFO", "no more gateways to try ...\n"); }; if (next_gw()) { t_on_failure("2"); route(1); } else { t_reply("503", "No gateways"); exit; }; exit; }; } Rafael Moreno Matrix Telecom www.matrixtelecom.net.br / Phone: 55.11.3323-9207

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[Kamailio-Users] append_branch: max nr of branches exceeded
by Ma Zhiyong 28 Jul '09

28 Jul '09

Hi, all I use kamailio 1.5.1 notls as a call-relay, It works fine but I found some errors in my logs, can you tell me what happened? Should I you increase MAX_BRANCHES value in sip-server/config.h? ERROR:core:append_branch: max nr of branches exceeded ERROR:dispatcher:ds_update_dst: append_branch action failed ERROR:dispatcher:ds_next_dst: cannot set dst addr my cfg: ds_select_domain("2","4"); force_rtp_proxy(); t_relay();

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[Kamailio-Users] How to get the destination IP
by catalina oancea 28 Jul '09

28 Jul '09

Hello Is there a way to find the IP address that the request will be sent to using kamailio.cfg ? For example if extension is behind NAT, after lookup() I have in $rd the IP in the contact column of location table, not the actual IP in the received column. I couldn't find a pseudovar for this. Thanks, Catalina

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[Serusers] FW: HA1 calculation failed
by jay 28 Jul '09

28 Jul '09

Hello I try to launch ser_mysql.sh as root user, When I try it using "/usr/sbin/ser_mysql.sh create" , I got the error "HA1 calculation failed" . How to overcome the problem ? Cheers, Jay

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Re: [Kamailio-Users] RES: Can someone help me?
by Rafael Moreno Gomes 28 Jul '09

28 Jul '09

Hi, I have been reading a lot about Kamailio and I have done one configuration with lcr servers but now the core is giving me a message When I try: Jul 27 19:33:54 [13430] ERROR:tm:t_forward_nonack: sending request failed Jul 27 19:34:12 [13430] WARNING:core:run_actions: null action list (rec_level=2) Jul 27 19:34:12 [13430] WARNING:core:run_actions: null action list (rec_level=2) Jul 27 19:34:12 [13430] WARNING:core:run_actions: null action list (rec_level=2) Jul 27 19:34:54 [13430] WARNING:core:run_actions: null action list (rec_level=2) Jul 27 19:34:54 [13430] WARNING:core:run_actions: null action list (rec_level=2) loading gw_uri_avp[0]='1|0||3970344258||5061|2|0' loading gw_uri_avp[1]='1|0||3987121474||5061|2|0' trying gateway '1|0||3970344258||5061|2|0' ruri_user_avp='rafael' Jul 27 19:34:54 [13430] ERROR:core:tcp_blocking_connect: poll error: flags 18 Jul 27 19:34:54 [13430] ERROR:core:tcp_blocking_connect: failed to retrieve SO_ERROR (111) Connection refused Jul 27 19:34:54 [13430] ERROR:core:tcpconn_connect: tcp_blocking_connect failed Jul 27 19:34:54 [13430] ERROR:core:tcp_send: connect failed Jul 27 19:34:54 [13430] ERROR:tm:msg_send: tcp_send failed Jul 27 19:34:54 [13430] ERROR:tm:t_forward_nonack: sending request failed Rafael Moreno Matrix Telecom www.matrixtelecom.net.br / Phone: 55.11.3323-9207

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[Serusers] Compile errors on CentOS 5.3
by SIP 27 Jul '09

27 Jul '09

Just grabbed the latest CVS for SER and attempted to compile it on a CentOS 5.3 box, but received these errors: config.mak loaded Makefile.defs defs skipped gcc -m64 -g -O9 -funroll-loops -Wcast-align -minline-all-stringops -falign-loops -ftree-vectorize -mtune=opteron -Wall -DNAME='"ser"' -DVERSION='"2.1.0-dev23-make"' -DARCH='"x86_64"' -DOS='linux_' -DOS_QUOTED='"linux"' -DCOMPILER='"gcc 4.1.2"' -D__CPU_x86_64 -D__OS_linux -DSER_VER=2001000 -DCFG_DIR='"/usr/local/etc/ser/"' -DMODS_DIR='"/usr/local/lib/ser/modules/"' -DPKG_MALLOC -DSHM_MEM -DSHM_MMAP -DDNS_IP_HACK -DUSE_IPV6 -DUSE_MCAST -DUSE_TCP -DDISABLE_NAGLE -DHAVE_RESOLV_RES -DUSE_DNS_CACHE -DUSE_DNS_FAILOVER -DUSE_DST_BLACKLIST -DUSE_NAPTR -DDBG_QM_MALLOC -DUSE_TLS -DTLS_HOOKS -DFAST_LOCK -DADAPTIVE_WAIT -DADAPTIVE_WAIT_LOOPS=1024 -DCC_GCC_LIKE_ASM -DHAVE_GETHOSTBYNAME2 -DHAVE_UNION_SEMUN -DHAVE_SCHED_YIELD -DHAVE_MSG_NOSIGNAL -DHAVE_MSGHDR_MSG_CONTROL -DHAVE_ALLOCA_H -DHAVE_TIMEGM -DHAVE_SCHED_SETSCHEDULER -DHAVE_EPOLL -DHAVE_SIGIO_RT -DSIGINFO64_WORKARROUND -DUSE_FUTEX -DHAVE_SELECT -c cfg_core.c -o cfg_core.o In file included from futexlock.h:52, from lock_ops.h:85, from locking.h:70, from pt.h:50, from cfg_core.c:42: /usr/include/linux/futex.h:108: error: expected ')' before '*' token /usr/include/linux/futex.h:112: error: expected ')' before '*' token make: *** [cfg_core.o] Error 1 As you can see, it's an X86_64 architecture box running kernel 2.6.18-128.el5. I saw a similar error in Google, but there was no resolution. Any ideas? N.

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sr-users July 2009