sr-users May 2023

sr-users@lists.kamailio.org

40 participants
48 discussions

Re: where add contact header to ack for fail messages

by Henning Westerholt

Understood. Thanks for sharing your final solution, added the list as well that others can benefit from it. Cheers, Henning From: mohsen khashei <mkhashei(a)gmail.com> Sent: Donnerstag, 11. Mai 2023 12:37 To: Henning Westerholt <hw(a)gilawa.com> Subject: Re: [SR-Users] Re: where add contact header to ack for fail messages I need it for an application server after kamailio. Finally I add contact to the message by ac_extra_hdrs of tm module with a p header. On Thu, May 11, 2023, 15:01 Henning Westerholt <hw(a)gilawa.com<mailto:hw@gilawa.com>> wrote: Hello, why you actually need to add the Contact header to the ACK? According to the RFC 3261 is should be an optional header to that message. Cheers, Henning -----Original Message----- From: James Browne <james(a)frideo.com<mailto:james@frideo.com>> Sent: Mittwoch, 10. Mai 2023 14:08 To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org<mailto:sr-users@lists.kamailio.org>> Subject: [SR-Users] Re: where add contact header to ack for fail messages I made simple tests and it seems that this is a kamailio-TM-internal message being sent, not being processed by the cfg file. If this is simple enough and deterministic, you may consider using the corex module to edit the message as it's being sent "on the wire". I can't think of any other solution. https://kamailio.org/docs/modules/5.6.x/modules/corex.html#corex.evr.networ… You may be able to write some code that manipulates the message to manually add the Contact header. Maybe even the append_hf function may work here, but it seems unlikely. James On Mon, 8 May 2023 at 12:28, mohsen khashei <mkhashei(a)gmail.com<mailto:mkhashei@gmail.com>> wrote: > > thanks for the reply I tried it and it didn't work. also I tried onsend_route with no luck. > > On Sun, May 7, 2023 at 7:00 PM Yuriy G <ovoshlook(a)gmail.com<mailto:ovoshlook@gmail.com>> wrote: >> >> Try here >> https://www.kamailio.org/docs/modules/5.6.x/modules/tm.html#tm.e.loca >> l-request >> >> However I would doubt first do I do something right by adding contact to ACK message wichbasicaly confirmation of the final transaction and contact here is meaningless. >> >> On Sun, 7 May 2023, 16:48 mohsen khashei, <mkhashei(a)gmail.com<mailto:mkhashei@gmail.com>> wrote: >>> >>> Hi I want to know where kamailio sends ack messages to faiurel messages (status >=400) so that I I add Contact header to the ack. >>> I tried WITHINDLG with no luck. >>> thanks >>> __________________________________________________________ >>> Kamailio - Users Mailing List - Non Commercial Discussions To >>> unsubscribe send an email to sr-users-leave(a)lists.kamailio.org<mailto:sr-users-leave@lists.kamailio.org> >>> Important: keep the mailing list in the recipients, do not reply only to the sender! >>> Edit mailing list options or unsubscribe: >> >> __________________________________________________________ >> Kamailio - Users Mailing List - Non Commercial Discussions To >> unsubscribe send an email to sr-users-leave(a)lists.kamailio.org<mailto:sr-users-leave@lists.kamailio.org> >> Important: keep the mailing list in the recipients, do not reply only to the sender! >> Edit mailing list options or unsubscribe: > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions To > unsubscribe send an email to sr-users-leave(a)lists.kamailio.org<mailto:sr-users-leave@lists.kamailio.org> > Important: keep the mailing list in the recipients, do not reply only to the sender! > Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave(a)lists.kamailio.org<mailto:sr-users-leave@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:

1 year, 2 months

using kamailio to send invite to webrtc clients (with freeswitch)

by shwetank singh

Hello experts I have a setup where webrtc client registrations (from behind a NAT / VPN) are on kamailio and the INVITE to begin a call is sent by freeswitch to kamailio which is then expected to relay it to the subscribed webrtc client. i understand, from documentation and general thinking, that kamailio cannot open a new connection to such a client and should reuse an open connection (a websocket in my case). i have setup kamailio as generic as it may sound and expect t_relay() to do the magic of forwarding the invite, however, from logs i don't see anything indicating kamailio is using any existing connection and hence my outgoing invite requests are stuck showing pointed towards a vpn gateway which was the registered "location" of client (which is the public ip of VPN gateway) please advise what relevant information can i produce here to make the query more readable and clear. headed here after trying just about all the resources available on the topic. e.g. if my location record looks like AoR: 1004(a)mydomain.com Contacts: - Contact: Address: sip:1004@11.22.33.44:49179 CFlags: 64 CSeq: 3087 Call-ID: 189jss21e24ntve1ggsuli Expires: 593 Flags: 0 Instance: <urn:uuid:8a936bbc-514f-4755-bed0-edc644dd4453> KA-Roundtrip: 0 Keepalive: 1 Last-Keepalive: 1683652755 Last-Modified: 1683652755 Methods: 7071 Path: <sip:10.10.6.196:3040;received=sip:mydomain.com ;lr;nat=yes> Q: -1 Received: sip:11.22.33.44:49179;transport=ws Reg-Id: 1 Ruid: uloc-645601c4-131220-3764 Server-Id: 0 Socket: tls:1.2.3.4:4443 State: CS_SYNC Tcpconn-Id: 3916 User-Agent: JsSIP 3.9.0 i try to lookup the location and find the address, and then route to that address by setting $ru in sngrep it does show that kamailio is trying to send INVITE to 11.22.33.44:port (which is the VPN gateway) but it isn't exactly clear from logs if this is being done over an existing connection. how does kamailio identify if a connection exists for a user (for each contact in AOR, if multiple contacts exist for a user -- i.e. different browser sessions?) if(reg_fetch_contacts("location", "$ru", "caller")) { $var(i) = 0; while($var(i) < $(ulc(caller=>count))) { $ru = $(ulc(caller=>addr)[$var(i)]); $var(i) = $var(i) + 1; setflag(FLT_DLGINFO); dlg_manage(); t_relay(); } } -- Shwetank

1 year, 2 months

Performing async_http calls on stateless Loadbalancers

by Julius Flohr

Hi List, we are running several stateless SIP Loadbalancers using Kamaillio 5.1 and 5.6. Now we would like to perform an async_http request if an INVITE matches certain criteria. The request itself is performed very similar to how it's described here [1] This uses the transaction module in order to assure that the response can be mapped to the original request. However, this also means that the processing of the entire request becomes stateful which we would like to avoid. We tried to use t_release() in the callback route (in [1] this route is called "RELAY_API_RESPONSE"). However, documentation says that this is only allowed in the REQUEST_ROUTE. Is there an easy way to circumnavigate this issue? Cheers [1]: https://wazo-platform.org/blog/kamailio-routing-with-rtjson-and-http-async-… -- Julius Flohr - Voice Engineer - flohr(a)sipgate.de Telefon: +49 (0)211-63 55 55-0 Mobil: +49 (0)1579-000-0205 Telefax: +49 (0)211-63 55 55-22 sipgate GmbH - Gladbacher Str. 74 - 40219 Düsseldorf HRB Düsseldorf 39841 - Geschäftsführer: Thilo Salmon, Tim Mois Steuernummer: 106/5724/7147, Umsatzsteuer-ID: DE219349391 www.sipgate.de - www.sipgate.co.uk

1 year, 2 months

Upgrade to 5.6.4 => [core/mem/q_malloc.c:519]: qm_free(): BUG: freeing already freed pointer

by Benoît Panizzon

Hi team I upgraded our lab to 5.6.4 from the official repository for ubuntu Jammy. Now I get crashes related to TLS: May 5 14:58:40 dev-cpereg01 kamailio[36147]: CRITICAL: <core> [core/mem/q_malloc.c:519]: qm_free(): BUG: freeing already freed pointer (0x7f4fedbed4e8), called from tls: tls_init.c: ser_free(323), first free tls: tls_init.c: ser_f ree(323) - ignoring May 5 14:58:40 dev-cpereg01 kamailio[36147]: CRITICAL: <core> [core/mem/q_malloc.c:519]: qm_free(): BUG: freeing already freed pointer (0x7f4fedd72b88), called from tls: tls_init.c: ser_free(323), first free tls: tls_init.c: ser_f ree(323) - ignoring May 5 14:58:40 dev-cpereg01 kamailio[36177]: CRITICAL: <core> [core/mem/q_malloc.c:519]: qm_free(): BUG: freeing already freed pointer (0x7f4fedd9e4a0), called from tls: tls_init.c: ser_free(323), first free tls: tls_init.c: ser_f ree(323) - ignoring May 5 14:58:40 dev-cpereg01 kamailio[36157]: CRITICAL: <core> [core/mem/q_malloc.c:519]: qm_free(): BUG: freeing already freed pointer (0x7f4fedd9e428), called from tls: tls_init.c: ser_free(323), first free tls: tls_init.c: ser_f ree(323) - ignoring And a bit later on: May 5 14:58:46 dev-cpereg01 kamailio[36179]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 34 May 5 14:58:46 dev-cpereg01 kamailio[36143]: ALERT: <core> [main.c:774]: handle_sigs(): child process 36161 exited by a signal 11 May 5 14:58:46 dev-cpereg01 kamailio[36143]: ALERT: <core> [main.c:777]: handle_sigs(): core was generated May 5 14:58:46 dev-cpereg01 kamailio[36143]: INFO: <core> [main.c:799]: handle_sigs(): terminating due to SIGCHLD Has there been a fundamental change in TLS? Or did I miss something important to do on a 5.5 => 5.6 upgrade? -- 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 ______________________________________________________

1 year, 2 months

TLS1.2 ciphers

by Sergiu Pojoga

Hi gang, Trying to figure out why Kamailio won't negotiate specific TLS1.2 ciphers, such as for example TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 i.e. *ECDHE-RSA-AES256-GCM-SHA384* OpenSSL lists the cipher as supported, however Kamailio won't negotiate it: # nmap --script ssl-enum-ciphers -p 5061 mysbc.domain.com PORT STATE SERVICE 5061/tcp open sip-tls | ssl-enum-ciphers: | TLSv1.2: | ciphers: | TLS_RSA_WITH_AES_256_GCM_SHA384 (rsa 2048) - A | TLS_RSA_WITH_AES_256_CBC_SHA256 (rsa 2048) - A | TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_AES_128_GCM_SHA256 (rsa 2048) - A | TLS_RSA_WITH_AES_128_CBC_SHA256 (rsa 2048) - A | TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_SEED_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_RC4_128_SHA (rsa 2048) - C | TLS_RSA_WITH_RC4_128_MD5 (rsa 2048) - C | TLS_RSA_WITH_3DES_EDE_CBC_SHA (rsa 2048) - C | compressors: | NULL | cipher preference: server | warnings: | 64-bit block cipher 3DES vulnerable to SWEET32 attack | Broken cipher RC4 is deprecated by RFC 7465 | Ciphersuite uses MD5 for message integrity |_ least strength: C OS: - outdated Debian 8 Jessie - OpenSSL 1.0.1t 3 May 2016 - openssl ciphers -v | grep '*ECDHE-RSA-AES256-GCM-SHA384*' - ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AESGCM(256) Mac=AEAD # kamailio -V version: kamailio 5.5.6 (x86_64/linux) ad1244 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 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. compiled on 21:08:20 Apr 13 2023 with gcc 4.9.2 modparam("tls", "cipher_list", "ALL") method = TLSv1.2+ Elliptic Curve Diffie-Hellman (EDCH) <https://kamailio.org/docs/modules/devel/modules/tls.html#tls.compile>-Ciphers are only supported in OpenSSL 1.0.0e and later. Any suggestions? Thanks.

1 year, 2 months

Using a second Perl library

by David Cunningham

Hello, We are using a product which already uses the "app_perl" module and sets the "filename" parameter to its own Perl library. However, we want to add more Perl code without having to modify that product's library. Does anyone know of a way to do this? To have Kamailio use Perl code from two different places? I guess in the worst case scenario we could use "app_python3", and have some Python code call subprocess.run() on the Perl code. Thanks very much, -- David Cunningham, Voisonics Limited http://voisonics.com/ USA: +1 213 221 1092 New Zealand: +64 (0)28 2558 3782

1 year, 2 months

Development is open for future release of v5.8.x series

by Daniel-Constantin Mierla

Hello, the branch 5.7 was created, therefore the master branch is open for adding new features, to be part of future release series v5.8.x (or whatever version is decided for next series). Any bug fix committed to master that applies to 5.7.x or older stable branches should be backported as usual with "git cherry-pick -x ..." to appropriate branches like 5.7 or 5.6. Expect that v5.7.0 will be released in a few weeks from now. Based on the workflow used during the past years, the next future release v5.8.0 should be out after another 8-10 months of development, plus 1-2 months of testing, so sometime during the first part of 2024. 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

1 year, 2 months

Branch 5.7 has been created

by Daniel-Constantin Mierla

Hello, the branch 5.7 has been created, to be used for releasing v5.7.x series. To check out this branch, the following commands can be used: git clone https://github.com/kamailio/kamailio kamailio-5.7 cd kamailio-5.7 git checkout -b 5.7 origin/5.7 Pushing commits in this branch: git push origin 5.7:5.7 Note that 5.7 is an official stable branch, so only bug fixes, missing kemi exports (discuss on sr-dev if not sure) or improvements to documentation or helper tools can be pushed to this branch. As usual, if there is a bug fixed, commit and push first to master branch and then cherry pick to 5.7 branch: git cherry-pick -x COMMITID In few weeks, the first release from branch 5.7 will be out, respectively Kamailio v5.7.0. 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

1 year, 2 months

send reply from branch route?

by Benoit Panizzon

Hello Is there a possibility to send a reply from within a branch route? Experimental case (yes, I know it's a non working set-up, but I just wonder if that would be possible). Two registrar nodes, location information shared between the two. CPE registers via TLS, therefore the existing connection shall be used towards the CPE and that only exists on one of the registrars. So in the Branch Route I would like to do something like: $var(socket) = $(ulc(aor=>socket)[$T_branch_idx]); if ($var(socket) == 0) { send_reply("503","no local socket"); } This would cause the core routing instance to select the next registrar from the dispatcher list which hopefully holds the active socket. But none of the 'send_reply' variants seem to be allowed within a branch route. Or is there a better solution? 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 ______________________________________________________

1 year, 2 months

Branching 5.7 on git repo for 5.7.x releases

by Daniel-Constantin Mierla

Hello, I am planning to split 5.7.x series on its own git branch 5.7 on Thursday, May 4, 2023. After that, master branch will be open for new features (to become part of 5.8 or what ever version will be decided to be next). Usually testing should continue for branch 5.7 for another 1-2 weeks, then, if no relevant road blockers pop up, we should release 5.7.0 as first stable version in the 5.7.x series. 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

1 year, 2 months

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sr-users May 2023