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37461 discussions

Seeking advices on redesigning our VoIP system for scalability and manageability
by Francesco 26 Mar '25

26 Mar '25

Dear all, I hope this email finds you well. I am reaching out to gather insights and suggestions regarding a potential redesign of our VoIP system to improve scalability, ease of management, and upgradeability. *Current Setup:* - Our system is *not multi-tenant* and is based on *Kamailio and FreeSWITCH* in a distributed architecture (as example of distributed architecture, see: https://ufdcimages.uflib.ufl.edu/UF/E0/04/92/89/00001/THOMPSON_C.pdf). - Everything runs inside *LXC containers* across multiple nodes. - One of the challenges we face is *OS upgrades*, which are cumbersome and require significant manual intervention. - At the moment the code for voip is done with ansible Given these challenges, I am considering whether a *microservices-based architecture* could be a viable option. However, I have some concerns regarding: - *SIP and RTP handling with NATed containers* (e.g., Kubernetes, Docker Swarm) and potential issues with media traversal. - *Performance impact* when shifting real-time traffic handling to containerized environments. - *Upgrade and deployment strategies*—how to achieve smoother, rolling upgrades without service interruptions. - *Alternative approaches* that might be more effective, such as a hybrid model combining LXC with containerized microservices for specific functions. If anyone has experience transitioning a VoIP system to microservices or has insights on best practices for *scalable, maintainable VoIP architectures*, I would greatly appreciate your thoughts. What worked for you? What pitfalls should we be aware of?Do you have any documentation that I can check? Looking forward to learning from your experiences. Thank you. .: Francesco Colista .: Francesco Colista

3 2

TOPOS Issue with Response Handling on two different Interfaces
by Vinayak Makwana 25 Mar '25

25 Mar '25

Hello all, We are facing an issue while configuring TOPOS in Kamailio P-CSCF (running under Docker). Our objective is to strip Via, Record-Route, and Route headers for both INVITE and 180 Ringing responses. However, we observe unexpected behavior when handling the 180 Ringing/200 OK responses. Call Flow & Issue Description: Note: Public IP and Private IP mapping using the below configuration. listen=udp:Local_IP:5060 name "internal" listen=udp:Local_IP:6070 advertise Public_IP:6070 name "external" Call Flow (INVITE): A-Party --> Kamailio P-CSCF (Public IP) --> Kamailio P-CSCF (Private IP) --> Kamailio S-CSCF (Private IP) --> Kamailio P-CSCF (Private IP) --> Kamailio P-CSCF (Public IP) --> B-Party For an incoming *INVITE* (A-Party → B-Party), TOPOS successfully strips the headers when the message flows through the P-CSCF, ensuring proper privacy of routing information. *Issue* : When B-Party sends a 180 Ringing, we observe that Kamailio P-CSCF (Private IP) adds a Record-Route header before forwarding the message to A-Party. Call Flow (180 Ringing): B-Party --> Kamailio P-CSCF (Public IP) --> Kamailio P-CSCF (Private IP) --> Kamailio S-CSCF (Private IP) We need to ensure that the Record-Route and Via headers are stripped properly in both directions. Please guide us how to achieve and what we are doing wrong. TOPOS module is configured as follows: modparam("ndb_redis", "server", "name=srv1;addr=127.0.0.1;port=6379") modparam("topos_redis", "serverid", "srv1") modparam("topos", "storage", "redis") modparam("topos", "contact_mode", 1) modparam("topos", "rr_update", 1) RR module is configured as follows: modparam("rr", "enable_full_lr", 1) modparam("rr", "append_fromtag", 1) configured the below event_route: event_route[topos:msg-outgoing] { xlog("L_INFO","[topos:msg-outgoing]"); if(is_request() and $sndto(ip)=="SCSCF_PRIVATE_IP") { xlog("L_INFO","[topos:msg-outgoing] TOPOS \n"); drop; } } Thanks, Vinayak Makwana -- *Disclaimer* In addition to generic Disclaimer which you have agreed on our website, any views or opinions presented in this email are solely those of the originator and do not necessarily represent those of the Company or its sister concerns. Any liability (in negligence, contract or otherwise) arising from any third party taking any action, or refraining from taking any action on the basis of any of the information contained in this email is hereby excluded. *Confidentiality* This communication (including any attachment/s) is intended only for the use of the addressee(s) and contains information that is PRIVILEGED AND CONFIDENTIAL. Unauthorized reading, dissemination, distribution, or copying of this communication is prohibited. Please inform originator if you have received it in error. *Caution for viruses, malware etc.* This communication, including any attachments, may not be free of viruses, trojans, similar or new contaminants/malware, interceptions or interference, and may not be compatible with your systems. You shall carry out virus/malware scanning on your own before opening any attachment to this e-mail. The sender of this e-mail and Company including its sister concerns shall not be liable for any damage that may incur to you as a result of viruses, incompleteness of this message, a delay in receipt of this message or any other computer problems.

1 1

Running Kamailio in kubernetes
by sagar agarwal 25 Mar '25

25 Mar '25

Hi team, I am looking for some guidance to run Kamailio as part of our Kubernetes cluster. I don't see any official or well maintained helm chart out there to install Kamailio on K8s. If there is a recommendation from your side on a helm chart please let me know. Also would be interesting to know if you foresee any issues with running Kamailio on k8s or do you feel its better to stick with ec2 based installations. Regards Sagar Agarwal

4 3

Problem with ipsec setting of Via for outgoing message
by Minello, Loredana 24 Mar '25

24 Mar '25

Hello, I'm using Kamailio ver. 5.8.4. I configured the ims_ipsec_pcscf with modparam("ims_ipsec_pcscf", "ipsec_max_connections", 1) and call ipsec_forward with flag = IPSEC_FORWARD_FLAGS where : # - IPSEC_SEND_FORCE_SOCKET 1 # - IPSEC_FORWARD_USEVIA 256 #!define IPSEC_FORWARD_FLAGS 257 For the UE REGISTRATION I have the following flow UE PCSCF_GM_IMS REGISTER (32133) ------------------> (5060) 100 Trying (32133) <------------------ (5060) 401 Unauthorized (32133) <------------------ (5060) REGISTER (TCP) (PORT_UC) ------------------> (PORT_PS) 100 Trying (TCP) (PORT_UC) <------------------ (PORT_PS) 200 OK (TCP) (PORT_UC) <------------------ (PORT_PS) ------------------------------------------------------------------ SUBSCRIBE (UDP) (PORT_UC) ------------------> (PORT_PS) 200 Subscription (UDP) (PORT_US) <------------------ (PORT_PC) NOTIFY (UDP) (PORT_US) <------------------ (PORT_PC) 200 OK (UDP) (PORT_UC) ------------------> (PORT_PC) NOTIFY (UDP) (PORT_US) <------------------ (PORT_PC) 200 OK (UDP) (PORT_UC) ------------------> (PORT_PC) NOTIFY (UDP) (PORT_US) <------------------ (PORT_PC) 200 OK (UDP) (PORT_UC) ------------------> (PORT_PC) The SUBSCRIBE behavior is correct : PCSCF receives message on PORT_PS and sends on PORT_PC The NOTIFY behavior is wrong: PCSCF send from PORT_PC (correct), but UE respond towards PORT_PC, defined in the Via of the NOTIFY. I know I can use the set_advertised_port() function, and in this case can work, but the function is taking a constant as a parameter, not a variable. This is causing a problem when ipsec_max_connections > 1. In that case it won't be easy to pass the correct port. I was wondering if the ipsec module should properly set the VIA port to the correct PORT_PS, rather than leaving the setting of the correct port by the kamailio.cfg. Do you have any hints on that? Thanks

1 0

Re: send_fd(): sendmsg failed sending 55 on 52: Too many references: cannot splice (109)
by Mathias Schneuwly 24 Mar '25

24 Mar '25

Thank you, I've already changed the value, but that didn't solve my issue with the blocking Kamailio. I did some tests with an older Yocto image which contains Kamailio 5.5.4 and OpenSSL 1.1.1w. With this combination I was not able to reproduce the deadlock. Am Fr., 21. März 2025 um 16:49 Uhr schrieb Harald Kapper <hk(a)kapper.net>: > Hi > > fyi – in case you need this: > > systemctl edit kamailio.service > > > > add: > > ### Editing /etc/systemd/system/kamailio.service.d/override.conf > > ### Anything between here and the comment below will become the contents > of the drop-in file > > > > [Service] > > LimitNOFILE=40960 > > > > ### Edits below this comment will be discarded > > > > (or whatever number you’d like) > > saving saves the override for systemd into (like) > /etc/systemd/system/kamailio.service.d/override.conf > > > > Afterwards you have to restart the service (systemctl restart > kamailio.service) > > > > And you should be fine. > > > > Regards, hk > > > > *Von:* Henning Westerholt via sr-users <sr-users(a)lists.kamailio.org> > *Gesendet:* Donnerstag, 20. März 2025 14:25 > *An:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> > *Cc:* Mathias Schneuwly <mathias(a)schneuwlys.ch>; Henning Westerholt < > hw(a)gilawa.com> > *Betreff:* [SR-Users] Re: send_fd(): sendmsg failed sending 55 on 52: Too > many references: cannot splice (109) > > > > Hello Mathias, > > > > yes, you can set the open files e.g. in the systemd unit file for Kamailio. > > > > Cheers, > > > > Henning > > > > *From:* Mathias Schneuwly via sr-users <sr-users(a)lists.kamailio.org> > *Sent:* Donnerstag, 20. März 2025 13:43 > *To:* sr-users(a)lists.kamailio.org > *Cc:* Mathias Schneuwly <mathias(a)schneuwlys.ch> > *Subject:* [SR-Users] Re: send_fd(): sendmsg failed sending 55 on 52: Too > many references: cannot splice (109) > > > > > I'll also give a try with 6.0.1 later. > > Meanwhile, I've tested 5.8.6 and 6.0.1 and both show the same issue. > > > > Am Do., 20. März 2025 um 10:21 Uhr schrieb Mathias Schneuwly < > mathias(a)schneuwlys.ch>: > > Hi Henning > > > > > Maybe also check the actual limits by “cat /proc/$kamailio-pid/limits” > Not 100% if its related, but if you are looking to scale this would be for > sure required. > > The limit was > > Max open files 1024 524288 files > > and I changed it now to > > Max open files 65536 65536 files > > > > Are there some recommendations for the limit? Would it make sense to > change that in the provided systemd file if you say that 1024 is not that > much? > > > > But anyway, it fails with 1024 and with 65536. > > > > I've also updated to 5.8.5 and it shows the same issue. I'll also give a > try with 6.0.1 later. > > > > > About the tls_thread_mode – you should use mode 2 if you are running > with openssl 3.x, otherwise you probably will observe random crashes. > > We are running OpenSSL 3.2.3 and tls_thread_mode is set to 2. But it still > blocks. > > > > Best regards > > Mathias > > > > Am Do., 20. März 2025 um 08:42 Uhr schrieb Henning Westerholt < > hw(a)gilawa.com>: > > Hello Mathias, > > > > 1024 open files are not that much, you should increase it for the kamailio > user. Maybe also check the actual limits by “cat > /proc/$kamailio-pid/limits” > > Not 100% if its related, but if you are looking to scale this would be for > sure required. > > > > About the tls_thread_mode – you should use mode 2 if you are running with > openssl 3.x, otherwise you probably will observe random crashes. > > > > If you are seeing the mentioned problem with 15 phones, this is clearly a > problem and should be further investigated. > > > > Cheers, > > > > Henning > > > > > > *From:* Mathias Schneuwly via sr-users <sr-users(a)lists.kamailio.org> > *Sent:* Donnerstag, 20. März 2025 08:07 > *To:* sr-users(a)lists.kamailio.org > *Cc:* Mathias Schneuwly <mathias(a)schneuwlys.ch> > *Subject:* [SR-Users] Re: send_fd(): sendmsg failed sending 55 on 52: Too > many references: cannot splice (109) > > > > Hi > > > > Thanks for the reply. We are using the following limits and I guess they > are the default values > > real-time non-blocking time (microseconds, -R) unlimited > core file size (blocks, -c) unlimited > data seg size (kbytes, -d) unlimited > scheduling priority (-e) 0 > file size (blocks, -f) unlimited > pending signals (-i) 15666 > max locked memory (kbytes, -l) 8192 > max memory size (kbytes, -m) unlimited > open files (-n) 1024 > pipe size (512 bytes, -p) 8 > POSIX message queues (bytes, -q) 819200 > real-time priority (-r) 0 > stack size (kbytes, -s) 8192 > cpu time (seconds, -t) unlimited > max user processes (-u) 15666 > virtual memory (kbytes, -v) unlimited > file locks (-x) unlimited > > > > But to me, it looks more like a deadlock somewhere around SSL_accept. > According to the stack trace generated with "kamctl trap", all 8 TCP > receiver processes are waiting in "#1 0x00007fa14ca04830 in > pthread_rwlock_wrlock () from /usr/lib/libc.so.6". I guess the message "Too > many references: cannot splice (109)" is just the consequence as the main > process is no longer able to dispatch jobs to the child workers. > > > > Meanwhile, I'm able to reproduce the issue. It requires a bit of brute > force, but it deadlocks reliably after a few seconds. > > > > I'm flooding Kamailio with register messages using sipexer. I'm running > the following command 3 times in parallel and always after a few seconds, > Kamailio is completely blocked. > > watch -n 0.1 "./sipexer -register -vl 3 -co -com -ex 3600 -fu "2" -au "2" > -ap "test" -tk <path to key>.key -tc <path to cert>.cer -ti -sd -ru > sip:<domain> -cu sip:2@<domain> tls:<fqdn>:5061;sleep 0.1;./sipexer > -register -vl 3 -co -com -ex 0 -fu "2" -au "2" -ap "test" -tk <path to > key>.key -tc <path to cert>.cer -ti -sd -ru sip:<domain> -cu sip:2@<domain> > tls:<fqdn>:5061" > > > > I played a bit with the parameters "modparam("tls", "init_mode", 1)" and > "tls_threads_mode = 2", but it didn't seem to change anything. > > > > Please have in mind that we usually do not stress Kamailio that much. We > have seen the issue a couple of times with around 5 to 15 SIP phones > registered. But in this usual setup, the problem does not occur reliably. > > > > Best regards > > Mathias > > > > Am Di., 18. März 2025 um 21:53 Uhr schrieb Henning Westerholt < > hw(a)gilawa.com>: > > Hello, > > > > check the ulimit settings for the kamailio user and general resource usage > on that system. In development branch there is also a feature present to > print the actual ulimits on startup. > > > > Cheers, > > > > Henning > > > > *From:* Mathias Schneuwly via sr-users <sr-users(a)lists.kamailio.org> > *Sent:* Montag, 17. März 2025 13:41 > *To:* sr-users(a)lists.kamailio.org > *Cc:* Mathias Schneuwly <mathias(a)schneuwlys.ch> > *Subject:* [SR-Users] send_fd(): sendmsg failed sending 55 on 52: Too > many references: cannot splice (109) > > > > Hi > > > > We are using kamailio 5.8.4. > > > > Recently, we noticed, that after a few days, we see the following messages > from Kamailio `2025 Mar 17 10:22:11 ttel CRITICAL: <core> > [core/pass_fd.c:193]: send_fd(): sendmsg failed sending 55 on 52: Too many > references: cannot splice (109)`. > > > > When this happens, devices are no longer able to register. At the moment > we have no idea what might be wrong. > > > > Unfortunately, the internet does not reveal much information regarding > this issue. In one issue related to Kamailio ( > https://lists.kamailio.org/mailman3/hyperkitty/list/sr-users@lists.kamailio…), > I found the command `kamctl trap` and when I execute that, I see one issue, > which might be related, but I'm just guessing... > > > > ``` > > ---start 1782236 ----------------------------------------------------- > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/usr/lib/libthread_db.so.1". > 0x00007fa14c9fb1c6 in ?? () from /usr/lib/libc.so.6 > $1 = 26 > $2 = {pid = 1782236, unix_sock = 36, idx = 0, status = 1, rank = 17, desc > = "tcp receiver (generic) child=0", '\000' <repeats 97 times>} > #0 0x00007fa14c9fb1c6 in ?? () from /usr/lib/libc.so.6 > No symbol table info available. > #1 0x00007fa14ca04830 in pthread_rwlock_wrlock () from /usr/lib/libc.so.6 > No symbol table info available. > #2 0x00007fa14ac20b49 in CRYPTO_THREAD_write_lock () from > /usr/lib/libcrypto.so.3 > No symbol table info available. > #3 0x00007fa14adbd5da in ?? () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #4 0x00007fa14adbd9ca in ?? () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #5 0x00007fa14adbc907 in ?? () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #6 0x00007fa14adbd26c in ?? () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #7 0x00007fa14adbd68e in ?? () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #8 0x00007fa14abe75c6 in ?? () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #9 0x00007fa14abe840b in EVP_RAND_generate () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #10 0x00007fa14acf9282 in RAND_bytes_ex () from /usr/lib/libcrypto.so.3 > No symbol table info available. > #11 0x00007fa14b06cce8 in ?? () from /usr/lib/libssl.so.3 > No symbol table info available. > #12 0x00007fa14b05bdf7 in ?? () from /usr/lib/libssl.so.3 > No symbol table info available. > #13 0x00007fa14b0ef036 in tls_accept (c=c@entry=0x7fa1475c0dc0, > error=error@entry=0x7ffebd9443b8) at tls_server.c:457 > ret = <optimized out> > ssl = warning: could not convert 'ssl_st' from the host encoding > (ANSI_X3.4-1968) to UTF-32. > This normally should not happen, please file a bug report. > 0x7fa147668bd0 > cert = <optimized out> > tls_c = 0x7fa14768f490 > tls_log = <optimized out> > __func__ = "tls_accept" > #14 0x00007fa14b0f7540 in tls_h_read_f (c=0x7fa1475c0dc0, > flags=0x7ffebd9647d0) at tls_server.c:1153 > r = 0x7fa1475c0ee8 > bytes_free = 16383 > bytes_read = <optimized out> > read_size = <optimized out> > ssl_error = 0 > ssl_read = 0 > ssl = 0x7fa147668bd0 > rd_buf = > "\026\003\003\004\016\v\000\004\n\000\004\a\000\004\0040\202\004\0000\202\002\350\240\003\002\001\002\002\002\026\0270\r\006\t*\206H\206\367\r\001\001\v\005\0000b1\v0\t\006\003U\004\006\023\002CH1\r0\v\006\003U\004\b\f\004Bern1\r0\v\006\003U\004\a\f\004Bern1\r0\v\006\003U\004\n\f\004RUAG1\0200\016\006\003U\004\v\f\aDefence1\0240\022\006\003U\004\003\f\versaimfs.ch0\036\027\r230302163519Z\027\r291230163519Z0`1\v0\t\006\003U\004\006\023\002CH1\r0\v\006\003"... > wr_buf = > "\026\003\003\000A\002\000\000=\003\003\371\204\326\361\262-9\300\344gV\2316\373\235D\314\225u8\v}\215\254DOWNGRD\001\000\3000\000\000\025\377\001\000\001\000\000\v\000\004\003\000\001\002\000#\000\000\000\027\000\000\026\003\003\a\267\v\000\a\263\000\a\260\000\004\0040\202\004\0000\202\002\350\240\003\002\001\002\002\002\r>0\r\006\t*\206H\206\367\r\001\001\v\005\0000b1\v0\t\006\003U\004\006\023\002CH1\r0\v\006\003U\004\b\f\004Bern1\r0\v\006\003U\004\a\f\004Bern1\r0\v\006\003U\004\n\f\004RUAG1\0200\016\006\003U\004\v\f\aDefence1\0240\022\006"... > rd = {buf = 0x7ffebd944480 "\026\003\003\004\016\v", pos = 1405, > used = 1405, size = 65536} > wr = {buf = 0x7ffebd954480 "\026\003\003", pos = 0, used = 0, size > = 65536} > tls_c = 0x7fa14768f490 > enc_rd_buf = <optimized out> > n = 0 > flush_flags = 0 > err_src = <optimized out> > ip_buf = '\000' <repeats 63 times> > x = <optimized out> > tls_dbg = <optimized out> > __func__ = "tls_h_read_f" > redo_read = <optimized out> > continue_ssl_read = <optimized out> > __llevel = <optimized out> > __kld = <optimized out> > __llevel = <optimized out> > __kld = <optimized out> > #15 0x000055d2519871b4 in tcp_read_headers (c=c@entry=0x7fa1475c0dc0, > read_flags=read_flags@entry=0x7ffebd9647d0) at core/tcp_read.c:445 > bytes = <optimized out> > remaining = <optimized out> > p = <optimized out> > r = 0x7fa1475c0ee8 > mc = <optimized out> > body_len = <optimized out> > tvnow = {tv_sec = 1742100857, tv_usec = 944923} > tvdiff = <optimized out> > mfline = <optimized out> > mtransid = <optimized out> > __func__ = "tcp_read_headers" > #16 0x000055d251989cef in tcp_read_req (con=0x7fa1475c0dc0, > bytes_read=bytes_read@entry=0x7ffebd9647c8, read_flags=read_flags@entry=0x7ffebd9647d0) > at core/tcp_read.c:1509 > bytes = <optimized out> > total_bytes = 0 > resp = 1 > size = <optimized out> > req = 0x7fa1475c0ee8 > dst = {send_sock = 0x55d251a91020, to = {s = {sa_family = 52024, > sa_data = "\257Q\322U\000\000\002\000\000\000\376\177\000"}, sin = > {sin_family = 52024, sin_port = 20911, sin_addr = {s_addr = 21970}, > sin_zero = "\002\000\000\000\376\177\000"}, sin6 = {sin6_family = 52024, > sin6_port = 20911, sin6_flowinfo = 21970, sin6_addr = {__in6_u = > {__u6_addr8 = > "\002\000\000\000\376\177\000\000\030\000\000\000\000\000\000", __u6_addr16 > = {2, 0, 32766, 0, 24, 0, 0, 0}, __u6_addr32 = {2, 32766, 24, 0}}}, > sin6_scope_id = 0}, sas = {ss_family = 52024, __ss_padding = > "\257Q\322U\000\000\002\000\000\000\376\177\000\000\030", '\000' <repeats > 23 times>, > "\001\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000\262+\226Q\001 > \000\000\200,5L\241\177\000\000 \020\251Q\322U\000\000 > \020\251Q\322U\000\000\200\303\257Q\322U\000\00009SG\241\177\000\000\330G\226\275\376\177\000\000\b\000\000\000\000\000\000", > __ss_align = 20}}, id = 1, send_flags = {f = 1, blst_imask = 0}, proto = 14 > '\016', proto_pad0 = 0 '\000', proto_pad1 = 0} > c = <optimized out> > ret = <optimized out> > again = <optimized out> > __func__ = "tcp_read_req" > #17 0x000055d25198ebec in handle_io (fm=fm@entry=0x7fa14c352c80, > events=events@entry=1, idx=idx@entry=-1) at core/tcp_read.c:1906 > ret = 8 > n = 0 > read_flags = RD_CONN_SHORT_READ > con = 0x7fa1475c0dc0 > s = 14 > resp = <optimized out> > t = <optimized out> > ee = 0x0 > __func__ = "handle_io" > error = <optimized out> > #18 0x000055d25199469b in io_wait_loop_epoll (repeat=repeat@entry=0, t=2, > h=0x55d251c49d60 <io_w>) at core/io_wait.h:1075 > n = 1 > r = 0 > fm = 0x7fa14c352c80 > revents = 1 > __func__ = "io_wait_loop_epoll" > #19 0x000055d251994e87 in tcp_receive_loop (unix_sock=<optimized out>) at > core/tcp_read.c:2026 > __func__ = "tcp_receive_loop" > #20 0x000055d25197e72c in tcp_init_children (woneinit=woneinit@entry=0x7ffebd964d1c) > at core/tcp_main.c:5391 > r = <optimized out> > i = <optimized out> > reader_fd_1 = 39 > pid = <optimized out> > si_desc = "tcp receiver > (generic)\000\000`M\226\275\376\177\000\000\001\000\000\000\000\000\000\000\210\035\223Q\322U\000\000 > \020\251Q\322U\000\000\220\315\257Q\322U\000\000\220\242/L\241\177\000\000\025\000\000\000\000\000\000\000\004\000\000\000\000\000\000\000%\020\251Q\322U\000\000HU\257Q\322U\000\000e\005\000\000\000\000\000\000 > \020\251Q\322U\000\000\3750\235Q\322U\000" > si = <optimized out> > __func__ = "tcp_init_children" > error = <optimized out> > #21 0x000055d2517c6c7e in main_loop () at main.c:1950 > i = <optimized out> > pid = <optimized out> > si = <optimized out> > si_desc = "udp receiver child=7 sock=10.0.90.1:5060\000\000\000\000\322U\000\000?\342\017K\241\177\000\000\022\000\000\000\377\377\377\377\200\006\265L\241\177\000\000\253m\237L\241\177\000\000\361|\003\000\000\000\000\000\t\000\000\000\000\000\000\000Sat > Mar 15 05:25:32 2025\n\000\264L\241\177\000" > nrprocs = <optimized out> > woneinit = 1 > __func__ = "main_loop" > error = <optimized out> > #22 0x000055d2517bc151 in main (argc=<optimized out>, argv=<optimized > out>) at main.c:3256 > cfg_stream = <optimized out> > c = <optimized out> > r = <optimized out> > tmp = 0x7ffebd966e7f "" > tmp_len = 32673 > port = 5060 > proto = 0 > aproto = 0 > ahost = 0x0 > aport = 0 > options = 0x55d251aa74b8 > ":f:cm:M:dVIhEeb:B:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" > ret = -1 > seed = 3209119183 > rfd = <optimized out> > debug_save = <optimized out> > debug_flag = <optimized out> > dont_fork_cnt = 0 > n_lst = <optimized out> > p = <optimized out> > st = {st_dev = 24, st_ino = 46237, st_nlink = 2, st_mode = 16888, > st_uid = 899, st_gid = 899, __pad0 = 0, st_rdev = 0, st_size = 40, > st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1742012732, tv_nsec = > 217328715}, st_mtim = {tv_sec = 1742012732, tv_nsec = 217328715}, st_ctim = > {tv_sec = 1742012732, tv_nsec = 217328715}, __glibc_reserved = {0, 0, 0}} > l1 = <optimized out> > tbuf = '\000' <repeats 32 times>, > "\030\202\237\275\376\177\000\000@\002\000\000@\003\000\000\001", '\000' > <repeats 23 times>, "@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ > \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ > \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ > \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ > \003\000\000@\003\000\000@\003", '\000' <repeats 11 times>, "\001", > '\000' <repeats 118 times>... > option_index = 12 > long_options = {{name = 0x55d251a9230b "help", has_arg = 0, flag = > 0x0, val = 104}, {name = 0x55d251a937a4 "version", has_arg = 0, flag = 0x0, > val = 118}, {name = 0x55d251a9826a "alias", has_arg = 1, flag = 0x0, val = > 1024}, {name = 0x55d251a92310 "subst", has_arg = 1, flag = 0x0, val = > 1025}, {name = 0x55d251a92316 "substdef", has_arg = 1, flag = 0x0, val = > 1026}, {name = 0x55d251a9231f "substdefs", has_arg = 1, flag = 0x0, val = > 1027}, {name = 0x55d251a92329 "server-id", has_arg = 1, flag = 0x0, val = > 1028}, {name = 0x55d251a92333 "loadmodule", has_arg = 1, flag = 0x0, val = > 1029}, {name = 0x55d251a9233e "modparam", has_arg = 1, flag = 0x0, val = > 1030}, {name = 0x55d251a92347 "log-engine", has_arg = 1, flag = 0x0, val = > 1031}, {name = 0x55d251a938c1 "debug", has_arg = 1, flag = 0x0, val = > 1032}, {name = 0x55d251a92352 "cfg-print", has_arg = 0, flag = 0x0, val = > 1033}, {name = 0x55d251a9235c "atexit", has_arg = 1, flag = 0x0, val = > 1034}, {name = 0x55d251a92363 "all-errors", has_arg = 0, flag = 0x0, val = > 1035}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} > __func__ = "main" > [Inferior 1 (process 1782236) detached] > ---end 1782236 ------------------------------------------------------- > > ``` > > > > Does anybody have an idea what this could be? I never saw that with > previous versions, and now we can see it on several instances, but we are > yet unable to reproduce. > > > > Not sure if this might be related, but we also see many messages like `Mar > 17 13:39:03 ttel /usr/sbin/kamailio[2882127]: CRITICAL: <core> > [core/tcp_main.c:5558]: tcp_timer_check_connections(): message processing > timeout on connection id: 402 (state: 0) - closing` > > > > Best regards > > Mathias > >

1 0

Dispatcher module resets URI parameters
by Marat Gareev 22 Mar '25

22 Mar '25

Hello, I encountered a problem that ds_select_domain function does not save URI parameters. I found workaround: if (!ds_select_domain( "1", 4, 3 )) { send_reply("502", "Bad Gateway"); exit; } if (!strempty($(ou{uri.params}))) { $ru = $ru+";"+$(ou{uri.params}); } But this can lead to duplicates if the URI in the dispatcher list contains the same parameter. Is there any other reliable way to keep original URI parameters while using the dispatcher? Thanks

2 1

send_fd(): sendmsg failed sending 55 on 52: Too many references: cannot splice (109)
by Mathias Schneuwly 20 Mar '25

20 Mar '25

Hi We are using kamailio 5.8.4. Recently, we noticed, that after a few days, we see the following messages from Kamailio `2025 Mar 17 10:22:11 ttel CRITICAL: <core> [core/pass_fd.c:193]: send_fd(): sendmsg failed sending 55 on 52: Too many references: cannot splice (109)`. When this happens, devices are no longer able to register. At the moment we have no idea what might be wrong. Unfortunately, the internet does not reveal much information regarding this issue. In one issue related to Kamailio ( https://lists.kamailio.org/mailman3/hyperkitty/list/sr-users@lists.kamailio…), I found the command `kamctl trap` and when I execute that, I see one issue, which might be related, but I'm just guessing... ``` ---start 1782236 ----------------------------------------------------- [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". 0x00007fa14c9fb1c6 in ?? () from /usr/lib/libc.so.6 $1 = 26 $2 = {pid = 1782236, unix_sock = 36, idx = 0, status = 1, rank = 17, desc = "tcp receiver (generic) child=0", '\000' <repeats 97 times>} #0 0x00007fa14c9fb1c6 in ?? () from /usr/lib/libc.so.6 No symbol table info available. #1 0x00007fa14ca04830 in pthread_rwlock_wrlock () from /usr/lib/libc.so.6 No symbol table info available. #2 0x00007fa14ac20b49 in CRYPTO_THREAD_write_lock () from /usr/lib/libcrypto.so.3 No symbol table info available. #3 0x00007fa14adbd5da in ?? () from /usr/lib/libcrypto.so.3 No symbol table info available. #4 0x00007fa14adbd9ca in ?? () from /usr/lib/libcrypto.so.3 No symbol table info available. #5 0x00007fa14adbc907 in ?? () from /usr/lib/libcrypto.so.3 No symbol table info available. #6 0x00007fa14adbd26c in ?? () from /usr/lib/libcrypto.so.3 No symbol table info available. #7 0x00007fa14adbd68e in ?? () from /usr/lib/libcrypto.so.3 No symbol table info available. #8 0x00007fa14abe75c6 in ?? () from /usr/lib/libcrypto.so.3 No symbol table info available. #9 0x00007fa14abe840b in EVP_RAND_generate () from /usr/lib/libcrypto.so.3 No symbol table info available. #10 0x00007fa14acf9282 in RAND_bytes_ex () from /usr/lib/libcrypto.so.3 No symbol table info available. #11 0x00007fa14b06cce8 in ?? () from /usr/lib/libssl.so.3 No symbol table info available. #12 0x00007fa14b05bdf7 in ?? () from /usr/lib/libssl.so.3 No symbol table info available. #13 0x00007fa14b0ef036 in tls_accept (c=c@entry=0x7fa1475c0dc0, error=error@entry=0x7ffebd9443b8) at tls_server.c:457 ret = <optimized out> ssl = warning: could not convert 'ssl_st' from the host encoding (ANSI_X3.4-1968) to UTF-32. This normally should not happen, please file a bug report. 0x7fa147668bd0 cert = <optimized out> tls_c = 0x7fa14768f490 tls_log = <optimized out> __func__ = "tls_accept" #14 0x00007fa14b0f7540 in tls_h_read_f (c=0x7fa1475c0dc0, flags=0x7ffebd9647d0) at tls_server.c:1153 r = 0x7fa1475c0ee8 bytes_free = 16383 bytes_read = <optimized out> read_size = <optimized out> ssl_error = 0 ssl_read = 0 ssl = 0x7fa147668bd0 rd_buf = "\026\003\003\004\016\v\000\004\n\000\004\a\000\004\0040\202\004\0000\202\002\350\240\003\002\001\002\002\002\026\0270\r\006\t*\206H\206\367\r\001\001\v\005\0000b1\v0\t\006\003U\004\006\023\002CH1\r0\v\006\003U\004\b\f\004Bern1\r0\v\006\003U\004\a\f\004Bern1\r0\v\006\003U\004\n\f\004RUAG1\0200\016\006\003U\004\v\f\aDefence1\0240\022\006\003U\004\003\f\versaimfs.ch0\036\027\r230302163519Z\027\r291230163519Z0`1\v0\t\006\003U\004\006\023\002CH1\r0\v\006\003"... wr_buf = "\026\003\003\000A\002\000\000=\003\003\371\204\326\361\262-9\300\344gV\2316\373\235D\314\225u8\v}\215\254DOWNGRD\001\000\3000\000\000\025\377\001\000\001\000\000\v\000\004\003\000\001\002\000#\000\000\000\027\000\000\026\003\003\a\267\v\000\a\263\000\a\260\000\004\0040\202\004\0000\202\002\350\240\003\002\001\002\002\002\r>0\r\006\t*\206H\206\367\r\001\001\v\005\0000b1\v0\t\006\003U\004\006\023\002CH1\r0\v\006\003U\004\b\f\004Bern1\r0\v\006\003U\004\a\f\004Bern1\r0\v\006\003U\004\n\f\004RUAG1\0200\016\006\003U\004\v\f\aDefence1\0240\022\006"... rd = {buf = 0x7ffebd944480 "\026\003\003\004\016\v", pos = 1405, used = 1405, size = 65536} wr = {buf = 0x7ffebd954480 "\026\003\003", pos = 0, used = 0, size = 65536} tls_c = 0x7fa14768f490 enc_rd_buf = <optimized out> n = 0 flush_flags = 0 err_src = <optimized out> ip_buf = '\000' <repeats 63 times> x = <optimized out> tls_dbg = <optimized out> __func__ = "tls_h_read_f" redo_read = <optimized out> continue_ssl_read = <optimized out> __llevel = <optimized out> __kld = <optimized out> __llevel = <optimized out> __kld = <optimized out> #15 0x000055d2519871b4 in tcp_read_headers (c=c@entry=0x7fa1475c0dc0, read_flags=read_flags@entry=0x7ffebd9647d0) at core/tcp_read.c:445 bytes = <optimized out> remaining = <optimized out> p = <optimized out> r = 0x7fa1475c0ee8 mc = <optimized out> body_len = <optimized out> tvnow = {tv_sec = 1742100857, tv_usec = 944923} tvdiff = <optimized out> mfline = <optimized out> mtransid = <optimized out> __func__ = "tcp_read_headers" #16 0x000055d251989cef in tcp_read_req (con=0x7fa1475c0dc0, bytes_read=bytes_read@entry=0x7ffebd9647c8, read_flags=read_flags@entry=0x7ffebd9647d0) at core/tcp_read.c:1509 bytes = <optimized out> total_bytes = 0 resp = 1 size = <optimized out> req = 0x7fa1475c0ee8 dst = {send_sock = 0x55d251a91020, to = {s = {sa_family = 52024, sa_data = "\257Q\322U\000\000\002\000\000\000\376\177\000"}, sin = {sin_family = 52024, sin_port = 20911, sin_addr = {s_addr = 21970}, sin_zero = "\002\000\000\000\376\177\000"}, sin6 = {sin6_family = 52024, sin6_port = 20911, sin6_flowinfo = 21970, sin6_addr = {__in6_u = {__u6_addr8 = "\002\000\000\000\376\177\000\000\030\000\000\000\000\000\000", __u6_addr16 = {2, 0, 32766, 0, 24, 0, 0, 0}, __u6_addr32 = {2, 32766, 24, 0}}}, sin6_scope_id = 0}, sas = {ss_family = 52024, __ss_padding = "\257Q\322U\000\000\002\000\000\000\376\177\000\000\030", '\000' <repeats 23 times>, "\001\000\000\000\000\000\000\000\001\000\000\000\000\000\000\000\262+\226Q\001 \000\000\200,5L\241\177\000\000 \020\251Q\322U\000\000 \020\251Q\322U\000\000\200\303\257Q\322U\000\00009SG\241\177\000\000\330G\226\275\376\177\000\000\b\000\000\000\000\000\000", __ss_align = 20}}, id = 1, send_flags = {f = 1, blst_imask = 0}, proto = 14 '\016', proto_pad0 = 0 '\000', proto_pad1 = 0} c = <optimized out> ret = <optimized out> again = <optimized out> __func__ = "tcp_read_req" #17 0x000055d25198ebec in handle_io (fm=fm@entry=0x7fa14c352c80, events=events@entry=1, idx=idx@entry=-1) at core/tcp_read.c:1906 ret = 8 n = 0 read_flags = RD_CONN_SHORT_READ con = 0x7fa1475c0dc0 s = 14 resp = <optimized out> t = <optimized out> ee = 0x0 __func__ = "handle_io" error = <optimized out> #18 0x000055d25199469b in io_wait_loop_epoll (repeat=repeat@entry=0, t=2, h=0x55d251c49d60 <io_w>) at core/io_wait.h:1075 n = 1 r = 0 fm = 0x7fa14c352c80 revents = 1 __func__ = "io_wait_loop_epoll" #19 0x000055d251994e87 in tcp_receive_loop (unix_sock=<optimized out>) at core/tcp_read.c:2026 __func__ = "tcp_receive_loop" #20 0x000055d25197e72c in tcp_init_children (woneinit=woneinit@entry=0x7ffebd964d1c) at core/tcp_main.c:5391 r = <optimized out> i = <optimized out> reader_fd_1 = 39 pid = <optimized out> si_desc = "tcp receiver (generic)\000\000`M\226\275\376\177\000\000\001\000\000\000\000\000\000\000\210\035\223Q\322U\000\000 \020\251Q\322U\000\000\220\315\257Q\322U\000\000\220\242/L\241\177\000\000\025\000\000\000\000\000\000\000\004\000\000\000\000\000\000\000%\020\251Q\322U\000\000HU\257Q\322U\000\000e\005\000\000\000\000\000\000 \020\251Q\322U\000\000\3750\235Q\322U\000" si = <optimized out> __func__ = "tcp_init_children" error = <optimized out> #21 0x000055d2517c6c7e in main_loop () at main.c:1950 i = <optimized out> pid = <optimized out> si = <optimized out> si_desc = "udp receiver child=7 sock=10.0.90.1:5060\000\000\000\000\322U\000\000?\342\017K\241\177\000\000\022\000\000\000\377\377\377\377\200\006\265L\241\177\000\000\253m\237L\241\177\000\000\361|\003\000\000\000\000\000\t\000\000\000\000\000\000\000Sat Mar 15 05:25:32 2025\n\000\264L\241\177\000" nrprocs = <optimized out> woneinit = 1 __func__ = "main_loop" error = <optimized out> #22 0x000055d2517bc151 in main (argc=<optimized out>, argv=<optimized out>) at main.c:3256 cfg_stream = <optimized out> c = <optimized out> r = <optimized out> tmp = 0x7ffebd966e7f "" tmp_len = 32673 port = 5060 proto = 0 aproto = 0 ahost = 0x0 aport = 0 options = 0x55d251aa74b8 ":f:cm:M:dVIhEeb:B:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 3209119183 rfd = <optimized out> debug_save = <optimized out> debug_flag = <optimized out> dont_fork_cnt = 0 n_lst = <optimized out> p = <optimized out> st = {st_dev = 24, st_ino = 46237, st_nlink = 2, st_mode = 16888, st_uid = 899, st_gid = 899, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1742012732, tv_nsec = 217328715}, st_mtim = {tv_sec = 1742012732, tv_nsec = 217328715}, st_ctim = {tv_sec = 1742012732, tv_nsec = 217328715}, __glibc_reserved = {0, 0, 0}} l1 = <optimized out> tbuf = '\000' <repeats 32 times>, "\030\202\237\275\376\177\000\000@ \002\000\000@\003\000\000\001", '\000' <repeats 23 times>, "@\003\000\000@ \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@ \003\000\000@\003\000\000@\003\000\000@\003\000\000@\003\000\000@\003", '\000' <repeats 11 times>, "\001", '\000' <repeats 118 times>... option_index = 12 long_options = {{name = 0x55d251a9230b "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x55d251a937a4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x55d251a9826a "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x55d251a92310 "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x55d251a92316 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x55d251a9231f "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x55d251a92329 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x55d251a92333 "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x55d251a9233e "modparam", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x55d251a92347 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x55d251a938c1 "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x55d251a92352 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x55d251a9235c "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x55d251a92363 "all-errors", has_arg = 0, flag = 0x0, val = 1035}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __func__ = "main" [Inferior 1 (process 1782236) detached] ---end 1782236 ------------------------------------------------------- ``` Does anybody have an idea what this could be? I never saw that with previous versions, and now we can see it on several instances, but we are yet unable to reproduce. Not sure if this might be related, but we also see many messages like `Mar 17 13:39:03 ttel /usr/sbin/kamailio[2882127]: CRITICAL: <core> [core/tcp_main.c:5558]: tcp_timer_check_connections(): message processing timeout on connection id: 402 (state: 0) - closing` Best regards Mathias

2 6

Kamailio v5.8.6 Released
by Daniel-Constantin Mierla 20 Mar '25

20 Mar '25

Hello, Kamailio SIP Server v5.8.6 stable release is out. This is a maintenance release of the latest stable branch, 5.8, that includes fixes since the release of v5.8.5. There is no change to database schema or configuration language structure that you have to do on previous installations of v5.8.x. Deployments running previous v5.8.x versions are strongly recommended to be upgraded to v5.8.6. For more details about version 5.8.6 (including links and guidelines to download the tarball or from GIT repository), visit: * https://www.kamailio.org/w/2025/03/kamailio-v5-8-6-released/ RPM, Debian/Ubuntu packages will be available soon as well. Note that 5.8.x is currently the previous stable release series, the latest is 6.0.x and v6.0.1 was released on March 10, 2025. Many thanks to all contributing and using Kamailio! Cheers, Daniel -- Daniel-Constantin Mierla (@ asipto.com) twitter.com/miconda -- linkedin.com/in/miconda Kamailio Consultancy, Training and Development Services -- asipto.com Kamailio Advanced Training, March 24-28, 2025 -- asipto.com Kamailio World Conference, May 12-13, 2025, Berlin -- kamailioworld.com

1 0

Releasing v5.8.6
by Daniel-Constantin Mierla 20 Mar '25

20 Mar '25

Hello, I am considering to release Kamailio v5.8.6 (out of branch 5.8) on Thursday, March 20, 2025. If anyone is aware of issues not yet on the bug tracker, report them there asap in order to have a better chance to be fixed. The most of the commits are backported, should any be found missing, reply to sr-dev mailing list. Cheers, Daniel -- Daniel-Constantin Mierla (@ asipto.com) twitter.com/miconda -- linkedin.com/in/miconda Kamailio Consultancy, Training and Development Services -- asipto.com Kamailio Advanced Training, March 24-28, 2025 -- asipto.com Kamailio World Conference, May 12-13, 2025, Berlin -- kamailioworld.com

1 1

Issue with async_cdp_callback() of MAR diameter message
by Minello, Loredana 18 Mar '25

18 Mar '25

Hello, I have an issue during the registration phase with the Diameter MAR procedure. The issue is as follows: 1. I perform a registration. 2. The MAR is correctly sent using the function: ims_www_challenge("REG_MAR_REPLY", "$var(auth_realm)"); 3. Upon receiving the MAA, after executing async_cdp_callback(), the execution does not return to the Kamailio reply route indicated (REG_MAR_REPLY). I tried replacing t_continue with t_continue_skip_timer in the async_cdp_callback() function of the MAR (see below), and everything works correctly. //tmb.t_continue(data->tindex, data->tlabel, data->act); tmb.t_continue_skip_timer(data->tindex, data->tlabel, data->act); free_saved_transaction_data(data); return; Note: When I send the SAR, I do not have this issue, but I noticed that in the corresponding async_cdp_callback(), the t_continue_skip_timer function is used. Do you think the modification I made to async_cdp_callback() for the MAR is correct? Why does t_continue not work? Thanks.

1 0

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2004

2003

2002

sr-users