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37456 discussions

topos vs topoh, any reason for putting a private IP in the Contact header?
by Benoit Panizzon 27 Jan '23

27 Jan '23

Hi I'm trying to work around Route-Header and Via Issues with the two topology hiding modules topoh and topos and trying to figure out, which one works better for our environment. My conclusion so far: topos creates very clean header, but needs a database or redis. I'm always reluctant in adding more components which could fail or cause load. topoh also works, but it worries me a bit that according to the manual: https://www.kamailio.org/docs/modules/devel/modules/topoh.html#topoh.p.mask… a private IP is used to mask the contact header. I have come across a CPE which, as far as I see, is misbehaving by ALWAYS sending a PRACK to the Hostname or IP found in the Contact header, and ignoring Route and Via Header. So why using a private IP as 'mask' and not the IP or Hostname of the actual kamailio instance? 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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Re: [sr-dev] Is there any Function or parameter to check Initial Invite Response on Kamailio
by Henning Westerholt 25 Jan '23

25 Jan '23

(removed sr-dev from CC) Hello, you can do that with the reply_route and/or onreply_route, for an example check out example cfg or this: https://www.kamailio.org/docs/modules/devel/modules/tm.html#tm.f.t_on_reply Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: HimaBindu G <himabindu.garadareddy(a)gmail.com> Sent: Tuesday, January 24, 2023 3:16 PM To: sr-users(a)lists.kamailio.org; sr-dev(a)lists.kamailio.org Subject: [sr-dev] Is there any Function or parameter to check Initial Invite Response on Kamailio Hi All, Can you please suggest any function or parameter to check Initial Invite Response from the backend. Thanks & Regards, Hima Bindu.

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RTPengine multiple setID sockets
by John Hardiman 24 Jan '23

24 Jan '23

Hi All, Hope you are all well? I am hoping you can help with a bit of syntax I am struggling to get working in the intended way. (We are using Kamailio 5.5.3 and using Kemi/python.) The scenario is in AWS where we have separate Kamailio and RTPengine instances, with a cluster of FreeSWITCH EC2's on private addresses only. In the current setup, all RTP routes via the NAT gateway and back to the private IP of the selected FreeSWITCH (and vice versa). This works in the current config, but I would want this traffic not going via the NAT gateway and use the private address and route internally on the VPC. (These EC'2 have only 1 network interface and that cannot be changed for this work.) So anything between FreeSWITCH and Kamailio/RTPengine uses the private IP's for media, the rest use public IP's. It is good to note that the RTPengine's are the same in each set (3 total RTPengine's), just using the public/private IP's based on set ID. My first aim is to use KSR.permissions.allow_source_address() to check if the source address is from the FreeSWITCH cluster and set the rtpengine setID based on this. I have used this method for different parts of the config and it works. I am failing at this first step it seems, as no matter what I use in the function (below) it defaults and uses the public IP's in SDP. (No matter if I use the same setID in each set) kamailio.cfg snippet: # ----- rtpengine params ----- modparam("rtpengine", "setid_avp", "$avp()") # Public IP's ID 1: modparam("rtpengine", "rtpengine_sock", "1 == udp:5.5.5.5:2223 udp:6.6.6.6:2223 udp:7.7.7.7:2223") # Internal IP's ID 2: modparam("rtpengine", "rtpengine_sock", "2 == udp:10.0.0.1:2223 udp:10.0.0.2:2223 udp:10.0.0.3:2223") Kemi file snippet: # RTPengine Options for different SetID def ksr_route_rtpengine(self, msg): if KSR.textops.has_body_type("application/sdp") > 0 : # Source address is private subnet - use RTPengine set 2 (private IP's) if KSR.permissions.allow_source_address(400) == 1: KSR.rtpengine.set_rtpengine_set(2) KSR.rtpengine.rtpengine_manage( "RTP/AVP replace-session-connection replace-origin port-latching ICE=remove") else: # Source address is NOT private - use RTPengine set 1 (public) KSR.rtpengine.set_rtpengine_set(1) KSR.rtpengine.rtpengine_manage( "RTP/AVP replace-session-connection replace-origin port-latching ICE=remove") KSR.xlog.xlog("L_INFO", "RTPengine handling Block") return 1 Group 400 is the private subnet of the FreeSWITCH clusters we have behind on private addresses and the list contains the subnet of private IP's. Using the above, the Kamailio starts fine and understands/loads each set of RTPengine's and calls work with audio. but regardless of the set number used (even only using set 2 in both) it defaults to public IP's in the SDP. (This is the only place in the config where this function is defined) My SDP from FreeSWITCH egress to Kamailio/RTPengine has private IP's in the SDP. The only thing I do not fully understand is the setid_avp - specifically $avp() block and if this needs to stay empty, or be duplicated with the set ID in each one. Any help would be greatly appreciated in understanding where I am going wrong here. Thanks, John.

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[SR-Users]: Port number in To: field
by Olivier 24 Jan '23

24 Jan '23

Hello, While trunking with an Oracle SBC, I was lately required to include a port number in INVITE To: field. Would you qualify this as a "legal requirement" (according to SIP Standards) ? Best regards

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dialog: db_mode => 1, enable_dmq => 1 but entries not replicated to 2nd node DB
by Benoit Panizzon 24 Jan '23

24 Jan '23

Hi I am struggling with DMQ and dialog DB storage leading to orphan or duplicate entries in database and not loading all dialog information upon restart. usrloc on the other side, also using local db storage and dmq, works flawlessly even when restarting one node. All location information is replicated between the databases via DMQ. So trying to find what is different. usrloc module: modparam("usrloc", "db_url", DBLOCAL) modparam("usrloc", "db_mode", 2) modparam("dmq_usrloc", "enable", 1) modparam("dmq_usrloc", "sync", 1) dialog module: modparam("dialog", "db_url", DBLOCAL ) modparam("dialog", "db_mode", 1 ) modparam("dialog", "db_skip_load", 0) modparam("dialog", "enable_dmq", 1) via kamcmd dlg.list I see that dialog information is being replicated between the two nodes. But I can only find the dialog in the local database of the node which is handling the call. Is this the expected behavior? I also just found how to create duplicate entries in the database... * Run a call on Node A, verify the dialog information is store in the local database and replicated to node B via DMQ. * Restart Kamailio on Node A. There I suspect, node A is restoring Dialog Information via DMQ from Node B and loading the same information from database, leaving duplicates in dialog_vars. 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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Kamailio World 2023 - Call For Presentations
by Daniel-Constantin Mierla 23 Jan '23

23 Jan '23

Hello, I would like to announce that Call for Presentations at Kamailio World 2023 is now open. You can submit your proposal or see more details at: - https://www.kamailioworld.com/k2023/call-for-speakers/ The 11th edition of the conference returns to Berlin, Germany, during June 5-7, 2023, as an in-person event. Expect a large range of participants, developers and community members as well as representatives of other popular open source VoIP projects such as Asterisk or FreeSwitch. Looking forward to meeting many of you there! Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - June 5-7, 2023 - www.kamailioworld.com

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Performances issue when freeing shared memory in custom module (Kamailio 5.5.2)
by Chaigneau, Nicolas 23 Jan '23

23 Jan '23

Hello, I'm encountering performance issues with Kamailio (5.5.2). I'm using a custom Kamailio module that loads routing data in memory, using Kamailio shared memory. This routing data is very large. It can be fully reloaded through a Kamailio RPC command (which is done once each day). When reloading, two sets of data are maintained, one "loading" and another "current" (the latter being used to handle SIP requests). When loading of the new data is finished, it is swapped to "current". Then, memory of the old (now unused) data is freed. I've noticed that when Kamailio is freeing the old data, there is a very significant performance impact on SIP requests. This is surprising to me, because the SIP requests do not use this old data. This is not a CPU issue, idle CPU% is at about 99% at that moment. I'm using the following functions : - shm_mallocxz - shm_free From what I understand, shm_free is actually "qm_shm_free" defined in "src\core\mem\q_malloc.c" (the default shared memory manager being "qm"). I've noticed that there is also a variant shm_free_unsafe ("qm_free"), which does not perform locking. I'm wondering if the lock could be the cause of my performances issues ? (But I'm not sure how this could be possible, because although the SIP requests need to access the shared memory allocated, they do not use directly the functions from the share memory manager.) If the performances issues are causes by the lock, could I use the unsafe version "safely" ? (considering that it is guaranteed that the old data cannot be used by anyone else) Thanks for your help. Regards, Nicolas. This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message.

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dialog.dlg_filter_mode has ambiguous definition with double negation
by Дилян Палаузов 23 Jan '23

23 Jan '23

Hello, https://www.kamailio.org/docs/modules/devel/modules/dialog#dialog.p.dlg_fil… says for dialog.dlg_filter_mode (int) Set dialog fitering mode, which can specify what dialogs are processed. Its value can be a combination (the sum) of following flags: 1 - do not send keepalives and do not execute timeout function if dialog is not local (if the associated bind address is not a local socket). Default value is “0”. As you can see, the definition of 1 is a double negation and there is no definition for 0. What means 0: - do not send keepalives and do not execute timeout function if dialog is local - send keepalives and execute timeout function if dialog is not local - send keepalives and execute timeout function if dialog is local

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Does tm.t_relay() create a transaction?
by Дилян Палаузов 20 Jan '23

20 Jan '23

Hello, the documentation for tm.t_newtran() says „This is the only way a script can add a new transaction in an atomic way.“ Moreover tm.t_send_reply() “creates the transaction if it does not exist (executing internally t_newtran()) and sends a stateful reply (executing internally t_reply())”. This means that only t_newtrans() and t_send_reply() can create transactions in an atomic way. The documentation of tm.t_relay() does not say whether the function creates a transaction. It also does not say what happens if t_reply() is not called after t_newtrans(). But for tm.t_set_retr() and tm.t_set_retr() is written “If the transaction is already created (e.g called after t_relay() or in an onreply_route) …” This suggests that tm.t_relay() does create atomically or not-atomically a transaction. - What does it mean to create a transaction in a non-atomic way? - Does tm.t_relay() create a transaction? Greetings Dilyan

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sslmode in db_postgres
by Centelles Martin, Joel 20 Jan '23

20 Jan '23

Hello everybody, I'm working on a kamailio instance as a basic registrar service and I thought to use db_postgres to connect a postgres service only allowing SSl connections. I see that that module doesn't provide any parameters to select sslmode and I was wondering if this module actually supports TLS connections. Does anybody know if this is supported and, if so, how to enable it? or should that support be added into db_postgres module code? Thank you very much in advance. BR, Joel Centelles RTC Lead Engineer | Care Communications R&D joel_centellesmartin(a)baxter.com<mailto:joel_centellesmartin@baxter.com> | baxter.com<https://baxter.com/> [cid:9ee6bcbd-9c30-45ec-bb43-8f439f19f724]<https://baxter.com>

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