Re: [SR-Users] problem with avpops and mongodb modules

Hi, thanks, we have a similar error further on after succesfully applying your patch on 4.4.4. The setup is the same as it was before, and the result this time is: Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: <script>: bla00 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:858]: db_mongodb_query(): query to collection [usr_preferences] Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:892]: db_mongodb_query(): query filter: { "username" : "0002", "attribute" : "fwd_blind" } Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:911]: db_mongodb_query(): columns filter: { "value" : 1, "attribute" : 1, "type" : 1 } Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:116]: db_new_result(): allocate 56 bytes for result set at 0x7f2f3ae70688 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:349]: db_mongodb_get_columns(): 3 columns returned from the query Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:154]: db_allocate_columns(): allocate 24 bytes for result names at 0x7f2f3ae44c90 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:165]: db_allocate_columns(): allocate 12 bytes for result types at 0x7f2f3ae70dc8 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:377]: db_mongodb_get_columns(): Found a field[0] named: value Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:403]: db_mongodb_get_columns(): allocate 16 bytes for RES_NAMES[0] at 0x7f2f3ae70ec8 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:438]: db_mongodb_get_columns(): use DB1_STRING result type Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:467]: db_mongodb_get_columns(): RES_NAMES(0x7f2f3ae70ec8)[0]=[value] (2) Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:377]: db_mongodb_get_columns(): Found a field[1] named: attribute Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:403]: db_mongodb_get_columns(): allocate 16 bytes for RES_NAMES[1] at 0x7f2f3ae70a18 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:438]: db_mongodb_get_columns(): use DB1_STRING result type Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:467]: db_mongodb_get_columns(): RES_NAMES(0x7f2f3ae70a18)[1]=[attribute] (2) Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:377]: db_mongodb_get_columns(): Found a field[2] named: type Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:403]: db_mongodb_get_columns(): allocate 16 bytes for RES_NAMES[2] at 0x7f2f3ae5a2b0 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:413]: db_mongodb_get_columns(): use DB1_INT result type Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:467]: db_mongodb_get_columns(): RES_NAMES(0x7f2f3ae5a2b0)[2]=[type] (16) Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:184]: db_allocate_rows(): allocate 16000 bytes for rows at 0x7f2f3ae73ba0 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:678]: db_mongodb_convert_result(): selected document: { "_id" : { "$oid" : "58beb954e498426da961b121" }, "attribute" : "fwd_blind", "value" : "sip:31203229998@sip.interxs.ch;user=phone", "type" : 0 } Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_row.c:117]: db_allocate_row(): allocate 96 bytes for row values at 0x7f2f3ae70e20 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:529]: db_mongodb_convert_bson(): looking for field[0] named: value Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:617]: db_mongodb_convert_bson(): RES_NAMES(0x7f2f3ae70ec8)[0]=[value] (2) Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: db_mongodb [mongodb_dbase.c:529]: db_mongodb_convert_bson(): looking for field[1] named: attribute Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: db_mongodb [mongodb_dbase.c:533]: db_mongodb_convert_bson(): field [attribute] not found in result iterator Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: db_mongodb [mongodb_dbase.c:682]: db_mongodb_convert_result(): failed to convert bson at pos 0 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: db_mongodb [mongodb_dbase.c:750]: db_mongodb_store_result(): failed to set the rows in result Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: db_mongodb [mongodb_dbase.c:925]: db_mongodb_query(): failed to store result Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: db_mongodb [mongodb_dbase.c:934]: db_mongodb_query(): failed to do the query Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:79]: db_free_columns(): freeing 3 columns Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[0] at 0x7f2f3ae70ec8 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[1] at 0x7f2f3ae70a18 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[2] at 0x7f2f3ae5a2b0 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:92]: db_free_columns(): freeing result names at 0x7f2f3ae44c90 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:97]: db_free_columns(): freeing result types at 0x7f2f3ae70dc8 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:52]: db_free_rows(): freeing 1000 rows Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_row.c:95]: db_free_row(): freeing row values at 0x7f2f3ae70e20 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:60]: db_free_rows(): freeing rows at 0x7f2f3ae73ba0 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: DEBUG: <core> [db_res.c:134]: db_free_result(): freeing result set at 0x7f2f3ae70688 Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: avpops [avpops_impl.c:381]: ops_dbload_avps(): db_load failed Mar 7 14:45:32 slb04 /usr/local/sbin/kamailio[28073]: ERROR: <script>: bla02 > Sent: Tuesday, March 07, 2017 at 8:59 AM > From: "Daniel-Constantin Mierla" &lt;miconda(a)gmail.com&gt; > To: "hdssdsdsdsfsdf hdssdsdsdsfsdf" &lt;hdssdsdsdsfsdf(a)mail.com&gt;om>, sr-users(a)lists.sip-router.org > Subject: Re: [SR-Users] problem with avpops and mongodb modules > > Hello, > > can you try with current master branch or using the patch from next > commit in your version? > > - > https://github.com/kamailio/kamailio/commit/501c41dd35fb9f15fdf96f4f3778860… > > I am not able to test these days, but if you report it is working fine, > then I can backport to stable branches. > > Cheers, > Daniel > > > On 06/03/2017 09:48, hdssdsdsdsfsdf hdssdsdsdsfsdf wrote: >>> On 22/02/2017 14:35, hsdsdssdfsdf dsasd wrote: >>>> I implemented call forwarding according to >>>> https://www.kamailio.org/wiki/tutorials/mini-howto-admin/call_forwarding, >>>> which is working fine. When I replace db_mysql with db_mongodb >>>> however, I receive an error on "if (avp_db_load("$ruri/username", >>>> "$avp(s:fwd_blind)")) {": >>>> >>>> ERROR: db_mongodb [mongodb_dbase.c:381]: db_mongodb_get_columns(): >>>> field [attribute] not found in result iterator >>>> ERROR: db_mongodb [mongodb_dbase.c:739]: db_mongodb_store_result(): >>>> failed to set the columns >>>> ERROR: db_mongodb [mongodb_dbase.c:918]: db_mongodb_query(): failed to >>>> store result >>>> ERROR: db_mongodb [mongodb_dbase.c:927]: db_mongodb_query(): failed to >>>> do the query >>>> ERROR: avpops [avpops_impl.c:381]: ops_dbload_avps(): db_load failed >>> can you set debug=3 in kamailio.cfg, restart kamailio and test again? >>> Then grab the log messages from syslog and send them here. It should >>> provide more debug information. >>> >>> Is there a record for this query? Or should be an empty response (no >>> record returned)? >>> >>> Cheers, >>> Daniel >> I used the following to store a forward: >> avp_db_store("$from/username","$avp(s:fwd_blind)"); >> >> Which in this case resulted in (after replacing the true forward info): >> > db.usr_preferences.find() >> { "_id" : ObjectId("58ac40f7e498420e0703a2e1"), "uuid" : "", "attribute" : "fwd_blind", "value" : "sip:0003@x.x.x;user=phone", "type" : 0, "username" : "0002", "domain" : null } >> >> After setting: >> debug=3 >> >> ... >> xlog("bla00"); >> if (avp_db_load("$ruri/username", "$avp(s:fwd_blind)")) { >> xlog("bla01" >> ... >> } >> xlog("bla02"); >> ... >> >> The syslog shows (after replacing the true username): >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: <script>: bla00 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:851]: db_mongodb_query(): query to collection [usr_preferences] >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:885]: db_mongodb_query(): query filter: { "username" : "0002", "attribute" : "fwd_blind" } >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:904]: db_mongodb_query(): columns filter: { "value" : 1, "attribute" : 1, "type" : 1 } >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:116]: db_new_result(): allocate 56 bytes for result set at 0x7fa03e54a6a0 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:349]: db_mongodb_get_columns(): 3 columns returned from the query >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:154]: db_allocate_columns(): allocate 24 bytes for result names at 0x7fa03e54a798 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:165]: db_allocate_columns(): allocate 12 bytes for result types at 0x7fa03e549848 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:377]: db_mongodb_get_columns(): Found a field[0] named: value >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:396]: db_mongodb_get_columns(): allocate 16 bytes for RES_NAMES[0] at 0x7fa03e549798 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:431]: db_mongodb_get_columns(): use DB1_STRING result type >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:460]: db_mongodb_get_columns(): RES_NAMES(0x7fa03e549798)[0]=[value] (2) >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: db_mongodb [mongodb_dbase.c:377]: db_mongodb_get_columns(): Found a field[1] named: attribute >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: db_mongodb [mongodb_dbase.c:381]: db_mongodb_get_columns(): field [attribute] not found in result iterator >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: db_mongodb [mongodb_dbase.c:739]: db_mongodb_store_result(): failed to set the columns >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: db_mongodb [mongodb_dbase.c:918]: db_mongodb_query(): failed to store result >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: db_mongodb [mongodb_dbase.c:927]: db_mongodb_query(): failed to do the query >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:79]: db_free_columns(): freeing 3 columns >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[0] at 0x7fa03e549798 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:92]: db_free_columns(): freeing result names at 0x7fa03e54a798 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:97]: db_free_columns(): freeing result types at 0x7fa03e549848 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: DEBUG: <core> [db_res.c:134]: db_free_result(): freeing result set at 0x7fa03e54a6a0 >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: avpops [avpops_impl.c:381]: ops_dbload_avps(): db_load failed >> Feb 24 10:42:18 slb04 /usr/local/sbin/kamailio[20311]: ERROR: <script>: bla02 >> >> When changing to db_mysql the error does not occur. I got the following record there: >> MariaDB [kamailio]> select * from usr_preferences; >> +----+------+-------------+--------+-----------+------+-------------------------------------------+---------------------+ >> | id | uuid | username | domain | attribute | type | value | last_modified | >> +----+------+-------------+--------+-----------+------+-------------------------------------------+---------------------+ >> | 26 | | 0002 | | fwd_blind | 0 | sip:0003@x.x.x;user=phone | 1900-01-01 00:00:01 | >> +----+------+-------------+--------+-----------+------+-------------------------------------------+---------------------+ >> >> With the same kamailio.cfg (except for replacing mongodb with mysql) resulting in: >> >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: ERROR: <script>: bla00 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:116]: db_new_result(): allocate 56 bytes for result set at 0x7fd17c349800 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:66]: db_mysql_get_columns(): 3 columns returned from the query >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:154]: db_allocate_columns(): allocate 24 bytes for result names at 0x7fd17c32f400 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:165]: db_allocate_columns(): allocate 12 bytes for result types at 0x7fd17c33fae8 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:84]: db_mysql_get_columns(): allocate 16 bytes for RES_NAMES[0] at 0x7fd17c349350 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:91]: db_mysql_get_columns(): RES_NAMES(0x7fd17c349350)[0]=[value] >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:135]: db_mysql_get_columns(): use DB1_STRING result type >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:84]: db_mysql_get_columns(): allocate 16 bytes for RES_NAMES[1] at 0x7fd17c349458 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:91]: db_mysql_get_columns(): RES_NAMES(0x7fd17c349458)[1]=[attribute] >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:135]: db_mysql_get_columns(): use DB1_STRING result type >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:84]: db_mysql_get_columns(): allocate 16 bytes for RES_NAMES[2] at 0x7fd17c3493a8 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:91]: db_mysql_get_columns(): RES_NAMES(0x7fd17c3493a8)[2]=[type] >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: db_mysql [km_res.c:99]: db_mysql_get_columns(): use DB1_INT result type >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:184]: db_allocate_rows(): allocate 16 bytes for rows at 0x7fd17c33fb98 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_row.c:117]: db_allocate_row(): allocate 96 bytes for row values at 0x7fd17c33f778 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_val.c:118]: db_str2val(): converting STRING [sip:0003@x.x.x;user=phone] >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_val.c:118]: db_str2val(): converting STRING [fwd_blind] >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_val.c:74]: db_str2val(): converting INT [0] >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: avpops [avpops_impl.c:132]: dbrow2avp(): db_flags=3, flags=12 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: avpops [avpops_db.c:265]: db_close_query(): close avp query >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:79]: db_free_columns(): freeing 3 columns >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[0] at 0x7fd17c349350 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[1] at 0x7fd17c349458 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:83]: db_free_columns(): freeing RES_NAMES[2] at 0x7fd17c3493a8 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:92]: db_free_columns(): freeing result names at 0x7fd17c32f400 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:97]: db_free_columns(): freeing result types at 0x7fd17c33fae8 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:52]: db_free_rows(): freeing 1 rows >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_row.c:95]: db_free_row(): freeing row values at 0x7fd17c33f778 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:60]: db_free_rows(): freeing rows at 0x7fd17c33fb98 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: <core> [db_res.c:134]: db_free_result(): freeing result set at 0x7fd17c349800 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: DEBUG: avpops [avpops_impl.c:415]: ops_dbload_avps(): loaded avps = 1 >> Feb 24 11:27:51 slb04 /usr/local/sbin/kamailio[21056]: ERROR: <script>: bla01 > -- > Daniel-Constantin Mierla > www.twitter.com/miconda -- www.linkedin.com/in/miconda > Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com > Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com > >