sr-users August 2021

sr-users@lists.kamailio.org

49 participants
52 discussions

Kamailio as basic dispatcher for load balancing

by Philipp Trenz

Hey there, I’m Philipp, an IT Systems Engineer from Potsdam, Germany and want to deepen my knowledge in SIP communication on scale. Currently, my setup is quite simple: A single stateless Asterisk instance, fully managed via ARI, which registers to multiple VoIP providers, only processes incoming calls to play audio files (no outgoing or conference calls). Now, with growing load on the single Asterisk instance, I would like to have one or two Kamailio instances, which will balance the load of incoming calls to multiple Asterisk instances. On which Asterisk instance they end up is irrelevant for me, as the calls can be processed on every instance. I looked into some Kamailio and Astricon conference speeches and checked out some tutorials. But still I’m not quite sure where to start. So here are some basic questions which would really help me out to get going: As I don’t want to have registrations of all my Asterisk instances at the VoIP providers, I should use the UAC module to let Kamailio do the registering to the VoIP providers and register my Asterisk instances to Kamailio, right? Will Kamailio automatically apply new outbound registrations when added to the database or do I have to trigger that manually? Should I use one or two instances of Kamailio, how hard is it to configure them fail-safe? For writing my first config file, should I start blank or from the standard config, what’s best practice? Thanks in advance, looking forward to your replies! Philipp

3 years, 3 months

How tell if rtp packets are being relayed through rtpengine in kamailio

by Faiz Fazaluddin

Hi, I want to see if rtp packets are being relayed through kamailio. I am attmepting to connect rtpengine with kamailio, but am not sure if it is working, how can I tell? I have the kamailio server on a different VM than the clients. In wireshark, no rtp packets show on the server VM and rtp packets only seem to be going directly through the client VM. Rtp engine mentions being unable to find hashtables when attempting to implement a delete_node command. Thank you very much for your help, Faiz

3 years, 3 months

by Thomas Grande

Hi there! I bumped into this post to perform forwarding of REGISTER requests and then saving a local cache on 2xx replies from main Registrar: https://lists.kamailio.org/pipermail/sr-users/2020-October/110779.html I think I understand all the steps described, but some features I need are missing: - How to change the Via headers to perform topology hiding? I understand TOPOS and TOPOH do not work on these types of messages. - Change contact header so that registrar responses traverse the Kamailio box. (Use textops I suppose?) - Besides, is this approach still the best in comparison to OpenSIPs mid-registrar module? Thanks in advance, -- *Thomás Alimena Del Grande* Engenharia - Aligera Tel. 51 3500-0121

3 years, 3 months

record_route() from websocket UA to tls UA

by Juha Heinanen

I noticed that when jsSIP UA that has registered over wss calls another SIP UA that has registered over tls, record_route() adds only one Route URI to outgoing INVITE (example below). This causes BYE to fail. This issue may be caused by the fact that both UAs register over the same Kamailio tls listening socket. Still two Route URIs should be added in the same way as is done when one UA registers over tcp and the other over udp. -- Juha --------------------------------------------------------------------- 09:25:43.639833 wss:87.95.73.155:19458 wss:192.27.134.1:5061 INVITE sip:foo@test.tutpro.com SIP/2.0 Via: SIP/2.0/WSS jovobf9n4svm.invalid;branch=z9hG4bK2639638 Max-Forwards: 69 To: <sip:foo@test.tutpro.com> From: " Test" <sip:test@test.tutpro.com>;tag=f7lpsuo7cb Call-ID: ovhd9fu1fl1a66nec011 CSeq: 1387 INVITE Contact: <sip:test@test.tutpro.com;gr=urn:uuid:e7f92a54-2295-4772-abc8-504be07e94c5> ... 09:25:43.649462 tls:192.27.134.1:5061 tls:87.95.73.155:19461 INVITE sip:foo-0x793ee87a90@10.158.141.103:38378;transport=tls SIP/2.0 Record-Route: <sip:192.27.134.1:5061;transport=ws;sn=ext_tls;lr;n2;dtlsf=avp;pm=0;ice> Via: SIP/2.0/TLS 192.27.134.1:5061;branch=z9hG4bK637c.7e15ef5b84ea054cfc8ea3d4e860521f.0 Via: SIP/2.0/WSS jovobf9n4svm.invalid;rport=19458;received=87.95.73.155;branch=z9hG4bK2639638 Max-Forwards: 68 To: <sip:foo@test.tutpro.com> From: " Test" <sip:test@test.tutpro.com>;tag=f7lpsuo7cb Call-ID: ovhd9fu1fl1a66nec011 CSeq: 1387 INVITE Contact: <sip:test@test.tutpro.com;gr=urn:uuid:e7f92a54-2295-4772-abc8-504be07e94c5>

3 years, 3 months

install latest sems-server on debian 10 buster

by Mojtaba

Hello there, Does anybody have experience installing the latest SEMS-Server (1.6.0) on debian 10 buster? I tried to install both 1.6.0. and 1.7-dev and some issues are occurred, but i installed the version 1.3.1 on debian 8 before. Any help would be appreciated. Thanks with best regards -- --Mojtaba Esfandiari.S

3 years, 3 months

How to insert user=phone header INVITE TO FROM

by César Matheus

Hi list. mY provider asks me to insert user = phone in my header. because it requires to receive my INVITE with user = phone in TO and FROM However, I add the user = phone in my configuration like this: $ ru = "sip:" + $ rU + "@" + $ sel (cfg_get.pstn1.gw_ip) + ":" + $ sel (cfg_get.pstn1.gw_port) + "; user = phone"; but only the INVITE appears, not in the TO or FROM. INVITE sip: 09872323232(a)X.Y.X.K: 5060; user = phone SIP / 2.0 From: <sip: XXXXYYYYY(a)172.20.12.4: 5060>; tag = 15552444533876 To: <sip: 09872323232(a)172.20.12.2: 5060> You can help me solve it. Thanks. -- César Matheus

3 years, 3 months

crash in timer

by Juha Heinanen

Any idea what could cause the crash shown in the bt below? This is with Kamailio 5.5. -- Juha [New LWP 12061] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". bt Core was generated by `/usr/bin/sip-proxy -f /etc/sip-proxy/sip-proxy.cfg -P /run/sip-proxy/sip-proxy.'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x0000563d3b390c5d in timer_list_expire (t=1584008014, h=0x7f7a1e76bb40, slow_l=0x7f7a1e76d680, slow_mark=63909) at core/timer.c:846 846 core/timer.c: No such file or directory. (gdb) bt full #0 0x0000563d3b390c5d in timer_list_expire (t=1584008014, h=0x7f7a1e76bb40, slow_l=0x7f7a1e76d680, slow_mark=63909) at core/timer.c:846 tl = 0x7f7a226ecbd8 ret = 0 #1 0x0000563d3b391219 in timer_handler () at core/timer.c:922 saved_ticks = 1584008014 run_slow_timer = 0 i = 421 __func__ = "timer_handler" #2 0x0000563d3b391742 in timer_main () at core/timer.c:961 No locals. #3 0x0000563d3b2c94de in main_loop () at main.c:1839 i = 8 pid = 0 si = 0x0 si_desc = "udp receiver child=7 sock=46.182.160.20:5060\000\000\000\000\003\000\000\000 \000\000\000\000\071CU\356xL\375\000\000\000\000\000\000\000\000\210\300m;=V\000\000\000\000\000\000\000\000\000\000\260\334\371Jz\177\000\000\263\331r;=V\000\000\000\000\000 \000\000\000\000\340\b3;\374\177\000\000\t\365U;=V\000" nrprocs = 8 woneinit = 1 __func__ = "main_loop" #4 0x0000563d3b2d44aa in main (argc=17, argv=0x7ffc3b330e28) at main.c:3053 cfg_stream = 0x563d3b9ea290 c = -1 r = 0 tmp = 0x7ffc3b331f3f "" tmp_len = 1260628273 port = 32634 proto = 0 ahost = 0x0 aport = 0 --Type <RET> for more, q to quit, c to continue without paging--c options = 0x563d3b6dece0 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1970794883 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x0 p = 0xffff00001f80 <error: Cannot access memory at address 0xffff00001f80> st = {st_dev = 21, st_ino = 21649, st_nlink = 2, st_mode = 16832, st_uid = 109, st_gid = 115, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1620846563, tv_nsec = 71986646}, st_mtim = {tv_sec = 1628122861, tv_nsec = 116913769}, st_ctim = {tv_sec = 1628122861, tv_nsec = 616909103}, __glibc_reserved = {0, 0, 0}} tbuf = "\000\000\000\000\000\000\000\000\b\000\000\000\000\000\000\000\060\067&Kz\177\000\000\000\000\000\000\000\000\000\000\240\241>;\374\177\000\000\364:$Kz\177\000\000\b\000\000\000\000\000\000\000\230\242>;\374\177\000\000\060\067&Kz\177\000\000\310\v3;\374\177\000\000\304\v3;\374\177", '\000' <repeats 18 times>, "\230\242>;\374\177\000\000\250\241>;\374\177\000\000'\256\002Kz\177\000\000&\260be\000\000\000\000\060\r3;\374\177\000\000\300\212\225\001\000\000\000\000\220\f3;\374\177\000\000\200\f3;\374\177\000\000\310\v3;\374\177\000\000X7&Kz\177\000\000\001", '\000' <repeats 31 times>... option_index = 0 long_options = {{name = 0x563d3b6e0f3f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x563d3b6dc4e1 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x563d3b6e0f44 "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x563d3b6e0f4a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x563d3b6e0f50 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x563d3b6e0f59 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x563d3b6e0f63 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x563d3b6e0f6d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x563d3b6e0f78 "modparam", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x563d3b6e0f81 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x563d3b6e0f8c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x563d3b6e0f92 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x563d3b6e0f9c "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __func__ = "main"

3 years, 3 months

Info: First group of presentations at Kamailio World Online 2021

by Daniel-Constantin Mierla

Hello, the first group of presentations selected for the next Kamailio World Online, September 1-2, 2021, has been published, aiming to provide a good knowledge base of using Kamailio for different deployment types: segregation of networks with an SBC-like role, controlling robots, RTP streams management with RTPEngine, configuration variables or transformations, SIP attacks handling and asynchronous SIP routing. You can find more details at: * https://kamailioworld.com/k09-online/ The schedule will be completed during the next days, with another group of interesting sessions and open discussion panels. Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda

3 years, 3 months

No docker hub automated builds

by Sergey Safarov

I found that not more automated builds available on docker hub https://www.docker.com/blog/changes-to-docker-hub-autobuilds/ Looks like we need to make some changes for the alpine docker image. Maybe use github actions for this task? https://docs.docker.com/ci-cd/github-actions/ Sergey

3 years, 3 months

RTPEngine: Async connection/communication between Kamailio and RTPEngine

by Mitesh Thakkar

Hi, Couple of week before I have posted feature request - https://github.com/kamailio/kamailio/issues/2807 As suggested, I am trying to figure out how I can achieve it with async or sworker modules. Can someone help me to understand how to use those modules to achieve async connectivity? Regards, Miteshkumar Thakkar

3 years, 3 months

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

sr-users August 2021