sr-users March 2023

sr-users@lists.kamailio.org

47 participants
66 discussions

different sip response on database (mysql) timeout
by Leon de Rooij 24 Mar '23

24 Mar '23

Hi, I need to use a database that may sometimes timeout and I'd like to give a conditional sip response based on whether there was a timeout or not. I'm using sqlops with mysql modules. Does anyone know if that's possible ? Thanks, Leon

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Route: comma separated HOP list
by Benoît Panizzon 24 Mar '23

24 Mar '23

Hi List Cisco-SPA112 does reply to an invite containing Record-Route header with one Route: Header containing a comma separated list of those hops. It looks like kamailio fails to parse them and correctly route for example an ACK to a 200 OK. Is this a known issue? Is there a solution? -- Mit freundlichen Grüssen -Benoît Panizzon- @ HomeOffice und normal erreichbar -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

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WebRTC "client did not present a certificate" error
by David Cunningham 23 Mar '23

23 Mar '23

Hello, We have a Kamailio 5.2.7 server with WebRTC enabled. However, a WebRTC client at https://tryit.jssip.net/ is unable to connect on either Chrome or Firefox. In the Kamailio log we see the lines below. In tls.cfg we have "verify_certificate = no" and "require_certificate = no" for both [server:default] and [client:default]. Would anyone be able to help us with this? Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:1159]: tls_lookup_private_key(): Private key lookup for SSL_CTX-0x14baf1cbb090: (nil) Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:749]: sr_ssl_ctx_info_callback(): SSL handshake done Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:737]: sr_ssl_ctx_info_callback(): SSL handshake started Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:741]: sr_ssl_ctx_info_callback(): SSL renegotiation initiated by client Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:749]: sr_ssl_ctx_info_callback(): SSL handshake done Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:737]: sr_ssl_ctx_info_callback(): SSL handshake started Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:741]: sr_ssl_ctx_info_callback(): SSL renegotiation initiated by client Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_domain.c:749]: sr_ssl_ctx_info_callback(): SSL handshake done Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_server.c:424]: tls_accept(): TLS accept successful Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_server.c:431]: tls_accept(): tls_accept: new connection from xx.xx.xx.xx:39816 using TLSv1.3 TLS_AES_256_GCM_SHA384 256 Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_server.c:434]: tls_accept(): tls_accept: local socket: yy.yy.yy.yy:8443 Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_server.c:445]: tls_accept(): tls_accept: client did not present a certificate Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: tls [tls_server.c:1189]: tls_read_f(): Reading on a renegotiation of connection (n:532) (0) Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: <core> [core/tcp_read.c:1527]: tcp_read_req(): EOF Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: <core> [core/io_wait.h:602]: io_watch_del(): DBG: io_watch_del (0x562ffde66d00, 17, -1, 0x10) fd_no=4 called Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: <core> [core/tcp_read.c:1680]: release_tcpconn(): releasing con 0x14baf4cc1ec8, state -1, fd=17, id=665 ([xx.xx.xx.xx]:39816 -> [xx.xx.xx.xx]:8443) Mar 22 01:25:28 br /sbin/kamailio[25259]: DEBUG: <core> [core/tcp_read.c:1684]: release_tcpconn(): extra_data 0x14baf289ea30 Mar 22 01:25:28 br /sbin/kamailio[25291]: DEBUG: <core> [core/tcp_main.c:3320]: handle_tcp_child(): reader response= 14baf4cc1ec8, -1 from 1 Mar 22 01:25:28 br /sbin/kamailio[25291]: DEBUG: tls [tls_server.c:683]: tls_h_close(): Closing SSL connection 0x14baf289ea30 Thanks very much, -- David Cunningham, Voisonics Limited http://voisonics.com/ USA: +1 213 221 1092 New Zealand: +64 (0)28 2558 3782

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How to require session timer and set a max session timer value?
by Benoit Panizzon 23 Mar '23

23 Mar '23

Hi All I would like to avoid having run away calls as good as possible. For this, I would like to require timers and set the maximum expires timer to say 1800 I had a look at the sst module, but I see no way to require timers or to set a max timers value. Do my intentions make sense? How did others accomplish this task? Thanks for any hints! Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

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With TOPOH module enabled, transferred call hangup from callee side does not hang up the call
by Arsenijs Kabihno 22 Mar '23

22 Mar '23

Hello, we have faced an issue which appears when TOPOH module is enabled, call is made from WebRTC client, then transferred by callee. We have WebRTC client behind load balancer. We make call to softphone from WebRTC, call from softphone is transferred to external number using Asterisk. When call is hanged up on external number side, it doesn't hangs up on WebRTC client side. If TOPOH is not enabled, this issue doesn't occur. We have the following TOPOH-related sections of kamailio.cfg: <...> #!ifdef WITH_TOPOH loadmodule "topoh.so" #!endif <...> <...> #!ifdef WITH_TOPOH modparam("topoh", "mask_key", "xxxxxxxxxxxxxxxx") modparam("topoh", "mask_ip", "10.0.0.1") modparam("topoh", "mask_callid", 0) modparam("topoh", "sanity_checks", 1) modparam("topoh", "uparam_prefix", "") modparam("topoh", "vparam_prefix", "") modparam("topoh", "callid_prefix", "1337") #!endif <...> <...> #!ifdef WITH_DIALOG modparam("dialog", "db_url", DBURL) modparam("dialog", "db_mode", 1) modparam("dialog", "db_fetch_rows", 800) modparam("dialog", "track_cseq_updates", 1) modparam("dialog", "ka_interval", 30) modparam("dialog", "ka_timer", 30) modparam("dialog", "send_bye", 0) modparam("dialog", "dlg_filter_mode", 1) #!ifdef WITH_TOPOH modparam("dialog", "lreq_callee_headers", "TH: dlh\r\n") #!endif #!endif <...> <...> #!ifdef WITH_DISPATCHER event_route[dispatcher:dst-up] { sql_query("ds_dburl", "select description from dispatcher where destination='$ru'", "ds_dbresult"); xlog("L_WARN", "Destination up: $ru, found name: $dbr(ds_dbresult=>[0,0])\n"); prom_gauge_set("trunk_reachability", "1", "$ru", "$dbr(ds_dbresult=>[0,0])"); } event_route[dispatcher:dst-down] { sql_query("ds_dburl", "select description from dispatcher where destination='$ru'", "ds_dbresult"); xlog("L_WARN", "Destination down: $ru, found name: $dbr(ds_dbresult=>[0,0])\n"); prom_gauge_set("trunk_reachability", "0", "$ru", "$dbr(ds_dbresult=>[0,0])"); } #!endif #!ifdef WITH_TOPOH event_route[topoh:msg-sending] { if(is_reply() and $rs=="302") { drop; } } #!endif (can provide the full config, if needed) We are receiving the following errors: On transfer: https://pastebin.com/H3FQ4Kpj On hangup from external number side: https://pastebin.com/wgfRzGbd On hangup from WebRTC client side: https://pastebin.com/sE0yhBae There are also differences in SIP traffic when TOPOH is disabled and when it is enabled. With TOPOH enabled, apparently, ACK from Asterisk is not reaching kamailio: asterisk INVITE -> kamailio -> WebRTC WebRTC 200 -> kamailio -> asterisk asterisk ACK -> kamailio -> -> -> (SIP flows attached - topoh_on.csv, topoh_off.csv) kamailio -v version: kamailio 5.6.1 (x86_64/linux) flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled on 09:11:15 Nov 15 2022 with gcc 9.3.0 We have dockerized kamailio running on Ubuntu 16.04.3 LTS Docker version 18.03.1-ce, build 9ee9f40 Please advise where to start looking.

1 0

OT: path support fix for asterisk
by Henning Westerholt 21 Mar '23

21 Mar '23

Hello, It's off-topic, but it was several times discussed here on the list. It seems that the upcoming 18.17 and 20.2 asterisk version seems to properly support path headers. From the announcement: * [ASTERISK-30100<https://issues.asterisk.org/jira/browse/ASTERISK-30100>] - res_pjsip: Path is ignored on INVITE to endpoint (Reported by Yury Kirsanov) This bug has been many years open. have not tried it yet, but it looks promising. Cheers, Henning -- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://gilawa.com<https://gilawa.com/>

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Follow-up: Printing Global Parameter Values & Logging JSONRPC Requests over UDP
by sadik.oualla.mohamed＠gmail.com 18 Mar '23

18 Mar '23

Hello everyone, I am following up on my previous email regarding printing Global Parameter values and logging JSONRPC requests over UDP in Kamailio. I understand that everyone might be busy, but I would greatly appreciate any guidance or suggestions you can provide on these topics. To recap my questions: 1)Is there a way to print the Global Parameter values, such as debug, children, flags, etc., within the Kamailio configuration file, to ensure they have been changed? 2°How can I log in Kamailio that it has received a JSONRPC request over UDP? I have been successful in logging this information when using HTTP and JSONRPC but am unsure how to do it with UDP. Any input or advice would be truly valuable. Thank you in advance for your time and assistance. Best.

1 0

Issues/Vulnerabilities in OpenSipS that may affect Kamailio
by Dovid Bender 17 Mar '23

17 Mar '23

Hi All, OpenSipS just released an update to the audit that was done to OpenSips [1]. From my basic coding skills it seems like the changes that were done by the OpenSipS project were not implemented in Kamailio which means that Kamailio is potentially vulnerable? For example you can compare the changes made by OpenSips project here [2] and the Kamailio code here [3] I am not active much on the list so please don't roast me if I am completely wrong here. Regards, Dovid [1] http://lists.opensips.org/pipermail/users/2023-March/046849.html [2] https://github.com/OpenSIPS/opensips/commit/dd9141b6f67d7df4072f3430f628d4b… [3] https://github.com/kamailio/kamailio/blob/master/src/core/parser/digest/par…

4 4

RPC error: 500 - Failed to use table
by Volker Denneberg 17 Mar '23

17 Mar '23

Hi, what can be the reason why usrloc module sometimes can read from database, sometimes not? Normal operation looks ok, the location table is kept up to date. The problem seems to be related with RPC (kamcmd or jsonrpc). For example, kamcmd ul.dump # ok kamcmd ul.lookup location 6351*1 # ok kamcmd ul.db_users location # error: 500 - Failed to use table Error 500 correlates with syslog entry: ERROR: <core> [db.c:481]: db_use_table(): invalid connection parameter Who connects where? In my understanding usrloc via core to mysql. I suppose RPC calls do not fail if usrloc can operate on kamailio memory, does that make sense? If so, what usrloc parameter can I tweak to fix error 500 ? I don't find any usrloc parameter regarding db connection. (Opening another mysql session as user kamailio is no problem, so we re not running out of connections.) Thanks in advance! Volker [cid:fb71bb9b-ad4f-4110-824b-d6805406bf6a] Volker Denneberg Development Telefon: +49 241 980 986 41 Web: www.m3connect.de<https://mx.scientific.de/owa/redir.aspx?C=RW1TSCipXQC6K0Yw1m69CGqyTwJHXjiiN…> E-Mail: v.denneberg(a)m3connect.de<https://mx.scientific.de/owa/redir.aspx?C=BjBXIUrD2WCryLRZ2IrAAwEu0b0W0ciUY…> m3connect GmbH | Pascalstr.18 | 52076 Aachen | DE/Germany | Amtsgericht Aachen | HRB 8773 | USt.- ID: DE219 664 658 | Geschäftsführer/CEO: Emilio Dragas

2 1

Sync NONCE between registrars?
by Benoit Panizzon 16 Mar '23

16 Mar '23

Hi We have two registrars. Today I observed a CPE doing this: CPE REGISTER (no auth) => Registrar 1 => 407 Challenge NONCE A CPE REGISTER (auth to NONCE A => Registrar 2 => 407 Challenge NONCE B CPE REGISTER (auth to NONCE B => Registrar 1 => 407 Challenge NONCE A and so on. Time on both registrars is in sync (I tought NONCE was based on time) Is there a way to sync the NONCE so that both would accept authentication based on the same NONCE? Mit freundlichen Grüssen -Benoît Panizzon- -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

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sr-users March 2023