August 2018 - sr-users - kamailio.org

Enabling tcp_write_buf
by Gholamreza Sabery 21 Aug '18

21 Aug '18

Hi, In the documentation of "tcp_wq_max" option it is written that : > It has no effect if *tcp_write_buf *is not enabled. > > The interesting fact is that, there is not description of what it is and how one can enable it. There is even a question about it in the mailing lists: https://lists.kamailio.org//pipermail/sr-dev/2011-June/011521.html It seems that it is an inaccuracy in the documentation. If there is such an option how to enable it? Can anyone tell? Regards

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Best practice/routing block for TCP connection errors to UAC?
by Anthony Alba 21 Aug '18

21 Aug '18

HI SR-Users Scenario: clients registered by TCP/TLS dropping off the network, kamailio stil thinks the client is registered and relays the INTIVE. The error occurs at the TCP layer so no failure route is called. ERROR: <core> [core/tcp_main.c:2690]: tcpconn_1st_send(): connect 127.0.0.1:48338 failed (RST) Connection refused ERROR: <core> [core/tcp_main.c:2700]: tcpconn_1st_send(): 127.0.0.1:48338: connect & send for 0x7f5494e906c0 failed: Connection refused (111) ERROR: tm [../../core/forward.h:251]: msg_send_buffer(): tcp_send failed WARNING: tm [t_fwd.c:1567]: t_send_branch(): sending request on branch 0 failed ERROR: sl [sl_funcs.c:362]: sl_reply_error(): stateless error reply used: I'm terribly sorry, server error occurred (1/SL) I want to send the caller instead a graceful failure route type message as if the callee is not registered (404/486/603/408 type) but don't understand how to hook a routing block for TCP errors. Anthony

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Fail to reload htable
by Soltanici Ilie 20 Aug '18

20 Aug '18

I'm trying to reload a hash table but receiving an error: error: 500 - Mtree reload failed [root@kamailio]# /usr/local/sbin/kamcmd htable.listTables { name: auth dbtable: dbmode: 0 expire: 0 updateexpire: 1 size: 256 dmqreplicate: 0 } [root@kamailio]# /usr/local/sbin/kamcmd htable.dump auth { entry: 69 size: 1 slot: { { name: username::8.8.8.8 value: 0 type: int } } } [root@kamailio]# /usr/local/sbin/kamcmd htable.reload auth error: 500 - Mtree reload failed [root@kamailio]# /usr/local/sbin/kamailio -v version: kamailio 5.1.4 (x86_64/linux) e8b2bf

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Kamailio 5.1 Nathelper sipping on different transport protocols.
by Володимир Іванець 20 Aug '18

20 Aug '18

Hello everyone! I have system with Kamailio v5.1 which needs to send OPTIONS packets to all active clients. Here is full Nathelper module configuration: *modparam("nathelper", "received_avp", "$avp(s:received)")* *modparam("nathelper", "natping_interval", 30)* *modparam("nathelper", "ping_nated_only", 0)* *modparam("nathelper", "sipping_bflag", FLB_SIPPING)* *modparam("nathelper", "sipping_from", "sip:pinger@kamailio.org <sip%3Apinger(a)kamailio.org>")* It works fine if client is connected over UDP. But as soon as I will switch to TCP or register with client that uses WS, Kamailio stops generating OPTIONS. Does anyone know if it is correct behavior or something is wrong? Thanks a lot!

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remove_hf function in INVITE message
by Mojtaba 20 Aug '18

20 Aug '18

Today i encounter with strange issue in SIP signalling in Kamailio, In INVITE message, I just change Contact Header and relay message to destination, But the message is like this: 192.168.122.245.4080 > 192.168.122.174.5060: [bad udp cksum 0x7b5e -> 0x3a4d!] SIP, length: 1104 INVITE sip:8000@r-kh.com;transport=UDP SIP/2.0 Record-Route: <sip:192.168.122.245:4080;lr;ftag=8e47e95e;nat=yes> Via: SIP/2.0/UDP 192.168.122.245:4080;branch=z9hG4bK14d7.dc974309aba269b24213204d3ea085e2.0 Via: SIP/2.0/UDP 192.168.122.1:36853;rport=36853;branch=z9hG4bK-d8754z-423b431a3ebc8a22-1---d8754z- Max-Forwards: 69 sip:7000@192.168.122.1:36853;transport=UDP;alias=192.168.122.1~36853~1To: <sip:8000@r-kh.com;transport=UDP> From: <sip:7000@r-kh.com;transport=UDP>;tag=8e47e95e Call-ID: YTZmYTJmYzg0ZDNiMjM2OGUxZGYwNzg4OWY1ZmIxYzc. CSeq: 1 INVITE Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE Content-Type: application/sdp Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri User-Agent: Z 3.3.25608 r25552 Allow-Events: presence, kpml Content-Length: 241 <SDP Body> The code in Kamailio is: #!ifdef WITH_SBC_NASIM #if the Invite request is MO, forward it to Asterisk . if (is_method("INVITE") && $si!="192.168.122.245") { xlog("L_INFO", "The Invite message from $si:$sp, Forwart to Asterisk. <192.168.122.174:5060>.\n"); remove_hf("Contact"); append_hf("Contact:sip:$fU@sbc.r-kh.com\r\n"); $du = "sip:192.168.122.174:5060"; } #!endif Be notice that, i have the same procedure in REGISTER message, But it is work correct, if(is_method("REGISTER")) { xlog("L_INFO", "forward register to Asterisk\n"); remove_hf("Contact"); append_hf("Contact:sip:$fU@sbc.r-kh.com\r\n"); rewriteuri("sip:r-kh.com"); $du = "sip:192.168.122.174:5060"; route(RELAY); } Let me know what is the problem? -- --Mojtaba Esfandiari.S

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Upgrade from Kamailio 4.4>5
by Nicolas Breuer 20 Aug '18

20 Aug '18

Hello, After upgrading, i cannot start anymore the service. Aug 19 10:19:57 proxy1 kamailio: ERROR: <core> [core/pvapi.c:828]: pv_parse_spec2(): error searching pvar "NULL" Aug 19 10:19:57 proxy1 kamailio: ERROR: <core> [core/pvapi.c:1032]: pv_parse_spec2(): wrong char [L/76] in [$NULL] at [4 (0)] Aug 19 10:19:57 proxy1 kamailio: ERROR: <core> [core/rvalue.c:2551]: mk_rval_expr_v(): memory allocation failure Any ideas ?

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JSONRPC-S and async RPC commands
by Juha Heinanen 20 Aug '18

20 Aug '18

JSONRPC-S module README has: 2. Limitations This module does not implement asynchronous RPC commands. It is unlikely that asynchronous RPC commands will be executed from an JSON-RPC over HTTP client. Does this mean that, for example, tm.t_uac_wait command cannot be executed using JSON-RPC over HTTP? If so, why "it is unlikely that asynchronous RPC commands will be executed from an JSON-RPC over HTTP client", since those commands are currently commonly executed from XMLRPC client using xmlrpc module? It would be nice if JSONRPC-S module could be used as replacement of xmlrpc module. -- Juha

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domain-based routing
by David Villasmil 19 Aug '18

19 Aug '18

Hello all, I need to set up a multi-domain kamailio, i think in terms of accepting invites to different domains is pretty simple by using the "alias" parameter, that much i have clear. My doubt comes from the fact that I need to route outgoing calls also based on the domain. As of today, i have single-domain kamailios using dispatcher to load-balance and failover said calls. I think i should be able to use dispatcher here as well, separating the dispatcher list by GID, so that Domain1->gid:1 Domain2->gid: 2 Domain3->gid: 3 and so on... I don't have registrations on this server and none are expected. So i'm thinking i will received the invites like: sip:12345@domain1.com sip:12345@domain1.com sip:12345@domain1.com and so on... How would you guys go about associating the domain with the gid list in dispatcher? Thanks a lot for your help! Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337 ᐧ

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Re: [SR-Users] Mysql 5.7 vs 8.0
by Henning Westerholt 17 Aug '18

17 Aug '18

Am Freitag, 17. August 2018, 16:37:23 CEST schrieb Wilkins, Steve: > Yes, I did read that post, thank you for that; my problem is that installing > Kamailio is one of the last things I do in a script so I was hoping to find > a way to tell Kamailio to point to a different version. I guess I will > just need to go another route. Hi Steve, (add sr-users) kamailio by itself will not force the installation of a mysql version. I think this is done from the distribution package management and from the respective kamailio package. There are ways to adapt the installed dependencies during this installation, but you need to investigate it, as its depend on your linux distribution. Best regards, Henning -- Henning Westerholt https://skalatan.de/blog/

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Mysql 5.7 vs 8.0
by Wilkins, Steve 17 Aug '18

17 Aug '18

Hi All, I would like Kamailio to use MySQL 5.7, however when Kamailio installs and I say I want to use MySQL, it installs 8.0. Can I someway direct Kamailio to install version 5.7? Thank you, -Steve

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