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37513 discussions

Orphan Dialog Vars: Probable cause found!
by Benoît Panizzon 15 Sep '23

15 Sep '23

Hi List I wonder if some of the devs could look at the dialog code and maybe confirm my observation of this supposed Bug in Kamailio 5.6 Situation: Two Kamailio, dialog counters synced via DMQ and each node using a local DB as dialog backend. Goal is to count channel usage per customer. modparam("dialog", "db_mode", 1 ) modparam("dialog", "enable_dmq", 1) modparam("dialog", "h_id_start", -1) # Use server_id modparam("dialog", "h_id_step", 2) modparam("dialog", "profiles_with_value", "custcallcounter") If 'JohnDoe' is involved in a call, I do: set_dlg_profile("custcallcounter","JohnDoe"); To check how many calls are busy by JohnDoe I do: get_profile_size("custcallcounter","JohnDoe","$var(channel_use)"); Picture this situation: JohnDoe is initiating a first call via Node1: Node1 created the dialogue and variables, writes them to the database and replicates the dialog vars to Node2 => IN MEMORY Nothing about the running dialog is being written to the Database on Node2, but get_profile_size returns the count on Node2. So while the first call aka dialog is running via Node1, JohnDoe is initiating a second call, this time via Node2. Node2 creates the dialog and writes this to the database. Then the profile with Name 'JohnDoe' is INCREASED on Node2. This is when I suddenly find the dialog_vars on the Node2 database containing information about the dialog started on Node1. So I guess writing to a dialog counter triggers the dialog_vars being written to the Database. When JohnDoe is ending it's first call, then the dialog and dialog_vars are cleaned out of the database on Node1, but NOT on Node2 What I fear happens next: They dialog_vars remaining on the Database of Node 2 accumulate more and more, making the database slower. When a call happens to re use the same hash id and entry, things start going really badly. Could I be right? -- 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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Set a License for Kamailio
by Ali Taher 15 Sep '23

15 Sep '23

Hello, Is it possible to put a kind of license for Kamailio, in a way that it works for 1 week for example, and after that it will not process new requests? Regards,

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client sending message and refresh register normal. But KSR.uac.uac_req_send() ERROR
by riffs＠sina.cn 14 Sep '23

14 Sep '23

The client uses the TLS protocol registered and TCP Connection established . There is a problem now, sending message KSR.uac.uac_req_send() from the kamilio server to client failed sometimes,and the error is as follows： “2023-09-04T17:22:01.515763+08:00 (3429) ERROR: tm [../../core/forward.h:292]: msg_send_buffer(): tcp_send failed 2023-09-04T17:22:01.515763+08:00 (3429) ERROR: tm [uac.c:678]: send_prepared_request_impl(): Attempt to send to precreated request failed ”. meantime, the client sending message to Kamalio server succeded, and the register status and tcp connection is normal. After 30s, obtained the $uac_req(evcode) from the event_route[uac:reply] is 408.After this error appears, all the messages sent to this client are 408. " 2023-08-29T03:48:43.738152+08:00 (3349) NOTICE: <script>: ===uac reply received, callid = 0B6ECB534AE24281AED9BBBC56B140A6`yangwang2`1693252093, code is: 408 2023-08-29T03:48:43.738825+08:00 (3349) NOTICE: <script>: ===uac reply received, callid = 0B6ECB534AE24281AED9BBBC56B140A6`yangwang2`1693252093, code is: 408 " But from other information, the TCP connection is normal. Because from Kamailio to querying this user's Location, it has not changed all day. The client sends messages is also normal. That is, the user's registration and sending messages can receive 200 OK. We use netstat commands to view the user's TCP connection information on the client and server, and the connection status is also normal.The status of the corresponding port of the TCP connection is ESTABLISHED. client: netstat -ano | findstr 49957 "172. 17. 47.125:49957 XXX.96.XXX.XXX:5061 ESTABLISHED 10516" server: "tcp 0 0 10.11.xx.xx:5061 xxx.xxx.xxx.xxx:49957 ESTABLISHED 3467/kamailio" This client is normal after logging in, and the problem that occurs after a period of use (maybe some hours), and once it occurs, it fails until the user creates a new connection and logs back in. Not all users will appear. Why is this the case? The socket connection is fine, but uac_req_send () get an ERROR? I found a problem from the log file. Is it caused by duplicate callids pushed to the same user at the same second? Looking forward to your answer, thank you very much Script information that may be required kamailio.cfg ： tm mode # ----- tm params ----- # auto-discard branches from previous serial forking leg modparam("tm", "failure_reply_mode", 3) # default retransmission timeout: 30sec modparam("tm", "fr_timer", 30000) # default invite retransmission timeout after 1xx: 120sec modparam("tm", "fr_inv_timer", 120000) modparam("tm", "auto_inv_100", 1) kamalio.lua uac_req_send() " --uac_req_send KSR.pv.sets("$uac_req(hdrs)", hdrs) KSR.pv.sets("$uac_req(method)", "MESSAGE") KSR.pv.sets("$uac_req(ruri)", "sip:" .. to .. "@" .. KAM_DOMAIN) KSR.pv.sets("$uac_req(furi)", "sip:" .. from .. "@" .. KAM_DOMAIN) KSR.pv.sets("$uac_req(turi)", "sip:" .. to .. "@" .. KAM_DOMAIN) KSR.pv.seti("$uac_req(evroute)", 1) KSR.pv.sets("$uac_req(body)", content) local ouri = (row.received ~= "" and row.received) or row.contact KSR.pv.sets("$uac_req(ouri)", ouri) local callid = rows[i].clientid .. "`" .. rows[i].username .. "`" .. os.time() KSR.pv.sets("$uac_req(callid)", callid) KSR.uac.uac_req_send()

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MS Teams and ca_list.pem
by Social Boh 13 Sep '23

13 Sep '23

Hello, I'd like to know where i can download/search ca_list.pem file to use in tls.cfg configuration file for MS TEAMS. Without the file: ERROR: tls [tls_util.h:50]: tls_err_ret(): TLS write:error:0A000086:SSL routines::certificate verify failed (sni: unknown) ERROR: tls [tls_server.c:1336]: tls_h_read_f(): src addr: 52.114.76.76:506 ERROR: tls [tls_server.c:1339]: tls_h_read_f(): dst addr: KamailioIP:0 ERROR: <core> [core/tcp_read.c:1476]: tcp_read_req(): ERROR: tcp_read_req: error reading - c: 0x7fb6a23ba4f8 r: 0x7fb6a23ba620 (-1) Thank you Regards -- --- I'm SoCIaL, MayBe

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number based routing and NATed peers
by Kiss Zoltán 12 Sep '23

12 Sep '23

Hello, Im gathering ideas about routing based on caller number to multiple peers and -lets say- subscribers. As far as i know we can route the calls with LCR based on prefix or the whole number to the LCR gateways which are specified in the LCR module gateway table. This is working very well with public IP based "peers". We can route calls to these gateways. But what can we do if we have to route to a "peer" which is behind NAT. Basically they have to REGISTER as a subscriber, but we cannot add a subscriber to the LCR gateway table, beacuse LCR module needs a directly reachable IP address with a fixed port. Does anyone have any ideas on how to handle these mixed type peers? Or maybe we have to add the fixed IP peers which are not REGISTERing to the usrloc database somehow and then we can do a lookup location based on $rU. To make myself clear, it would be nice if we can handle those 2 types of our peers unifromly in terms of SIP routing, thats why im looking for a "unified" solution. Thanks for your suggestions. With kind regards, Zoltan

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Skip/discard branch in branch route?
by Benoît Panizzon 11 Sep '23

11 Sep '23

Hi all Is there a way to skip a branch in branch route? Situation: Two registrar server with DMQ synced location database. CPE register via TCP or TLS. To properly work, message have to be sent over the existing TCP connection. Multiple CPE register to one AOR. CPE1 and CPE2 register to Registrar 1 CPE3 registers to Registrar 2 On Registrar 1 there is an established TCP connection to CPE1 and CPE2 but not to CPE3. Within the Branch Route to the CPE I can check if there is a TCP as the Branch Route is executed for every contact in that AOR: branch_route[BR_TO_CPE] { [...] $var(reg_contact_addr) = $(ulc(aor=>addr)[$T_branch_idx]{uri.host}); $var(socket) = $(ulc(aor=>socket)[$T_branch_idx]); if ($var(socket) == 0) { xlog("L_ERROR", "$cfg(route): No Socket for: $var(reg_contact_addr)"); } [...] } This log an error if the socket is not present on the local registrar. But is there a way to tell kamailio to skip/discard that contact? My intention is to parallel branch from the core to both registrars, that way all contacts would still get the call but via established TCP socket (and in case of UDP and NAT via correct know ip for ALG port-forwarding). -- 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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load_module(): could not find module <mi_fifo> in </usr/lib64/kamailio/modules/>
by amit＠cosmicinfotech.com 08 Sep '23

08 Sep '23

using kamailio 5.3.9 [244@root ~]$ kamailio -f /etc/kamailio/kamailio.cfg -E loading modules under config path: /usr/lib64/kamailio/modules/ 0(1071336) ERROR: <core> [core/sr_module.c:500]: load_module(): could not find module <mi_fifo> in </usr/lib64/kamailio/modules/> 0(1071336) CRITICAL: <core> [core/cfg.y:3543]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 294, column 12-23: failed to load module 0(1071336) ERROR: <core> [core/modparam.c:176]: set_mod_param_regex(): No module matching <mi_fifo> found 0(1071336) CRITICAL: <core> [core/cfg.y:3546]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 582, column 63: Can't set module parameter ERROR: bad config file (2 errors) 0(1071336) INFO: <core> [core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized please help!

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Re: uac_replace_to() without RR params
by Duarte Rocha 08 Sep '23

08 Sep '23

2 1

Question about a Slow timer process.
by Володимир Іванець 07 Sep '23

07 Sep '23

Hello everyone! I'm running Kamailio 5.6.2 and having a potential problem on one of the systems. The Slow timer process slowly consumes more and more of its PKG memory. I did not allow it to use all memory by restartink Kamailio during afterhours so I'm not sure what the consequences might be. I'm suspecting that this could be caused by my configuration but not sure how exactly. Can anyone please tell me how the Slow timer process can be debugged? Is it possible to see what it is storing in the memory and what data is piling up? Thanks a lot! Regarts, Volodymyr Ivanets.

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uac_replace_to() without RR params
by Duarte Rocha 07 Sep '23

07 Sep '23

Hello all, I'm currently working on a proxy where I need to change To and From headers in order to normalize the numbers to +E164. I would like to be able to restore using and $avp() or $dlg_var() and without writing parameters on the Record-Route headers. I've tried to use restore_mode in auto mode and restore_dlg parameter with value 1 but still got the parameters on the inserted Record-Route. I've tried manual mode and using the configured $avp() to restore, but the parameters still got written on the Request-URI. I thought of using restore_mode with value "none" saving original values in an $avvp() and doing the replace, however, uac_replace() on Request Route or branch routes. That way i can't replace the values of To and From in the replies. That being said, my questions are : - Is there a way to use manual or auto mode without writing info on the Record-Route and only using $avp() ? - Is there a way to make changes on the To and From header on replies? Thanks in advance, Best Regards, Duarte Rocha

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