sr-dev April 2025

sr-dev@lists.kamailio.org

14 participants
205 discussions

[tracker] Assignee added: Assignment operators don't work
by sip-router 12 Jun '25

12 Jun '25

THIS IS AN AUTOMATED MESSAGE, DO NOT REPLY. A user has added themself to the list of users assigned to this task. FS#100 - Assignment operators don't work User who did this - Alex Hermann (axlh) http://sip-router.org/tracker/index.php?do=details&task_id=100 You are receiving this message because you have requested it from the Flyspray bugtracking system. If you did not expect this message or don't want to receive mails in future, you can change your notification settings at the URL shown above.

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[kamailio/kamailio] tcp_send_timeout does not apply for outbound connections (Issue #4187)
by Oleg Vedeneev 11 Jun '25

11 Jun '25

ovedeneev created an issue (kamailio/kamailio#4187) ### Description [tcp_send_timeout](https://www.kamailio.org/wikidocs/cookbooks/5.8.x/core/#t… option does not apply for outbound connections. #### Reproduction 1. Establish TCP OPTIONS between Kamailio and target node. 2. On target node block incoming traffic from Kamailio node using iptables. 3. Notice on Kamailio node that TCP retransmission packets don't follow tcp_send_timeout settings, instead they fall back to kernel's net.ipv4.tcp_retries2 settings. ### Additional Information * **Kamailio Version** ``` # kamailio -V version: kamailio 5.8.2 (aarch64/linux) 446039 flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT-NOSMP, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_SEND_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. id: 446039 compiled on 14:32:09 Nov 14 2024 with gcc 8.5.0 ``` * **Operating System**: ``` Linux xxx 4.18.0-553.6.1.el8.aarch64 #1 SMP Thu May 30 04:10:32 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4187 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/4187(a)github.com>

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[kamailio/kamailio] Crash involving rtpengine (Issue #4179)
by Joe Mordica 10 Jun '25

10 Jun '25

jmordica created an issue (kamailio/kamailio#4179) ### Description Kamailio crash involving rtpengine ### Troubleshooting #### Reproduction  #### Debugging Data  ``` GNU gdb (Debian 13.1-3) 13.1 Copyright (C) 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/sbin/kamailio... Reading symbols from /usr/lib/debug/.build-id/20/dc8be8c0aa02eba62b84db3c283789f068fb79.debug... warning: Can't open file /dev/zero (deleted) during file-backed mapping note processing [New LWP 37] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `kamailio -DD -E -m 8000 -M 512 -f /etc/kamailio/kamailio.cfg -P /var/run/kamail'. Program terminated with signal SIGABRT, Aborted. #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44 44 ./nptl/pthread_kill.c: No such file or directory. (gdb) bt full #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44 tid = <optimized out> ret = 0 pd = <optimized out> old_mask = {__val = {0}} ret = <optimized out> #1 0x00007f0a2dd31f1f in __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78 No locals. #2 0x00007f0a2dce2fb2 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 ret = <optimized out> #3 0x00007f0a2dccd472 in __GI_abort () at ./stdlib/abort.c:79 save_stage = 1 act = {__sigaction_handler = {sa_handler = 0x20, sa_sigaction = 0x20}, sa_mask = {__val = {1880844493789993498, 1880844493789993498, 1880844493789993498, 0, 0, 0, 0, 2314885530818453536, 2314885530818453536, 2314885530818453536, 2314885530818453536, 0, 0, 0, 0, 94814674008008}}, sa_flags = 365707264, sa_restorer = 0x563bc3029320 <log_prefix_buf>} #4 0x0000563bc2e27414 in qm_debug_check_frag (qm=qm@entry=0x7f0815cc4000, f=f@entry=0x7f0834533950, file=file@entry=0x7f0a0a93420f "rtpengine: rtpengine_hash.c", line=line@entry=528, eline=eline@entry=546, efile=0x563bc2f6abcc "core/mem/q_malloc.c") at core/mem/q_malloc.c:132 p = <optimized out> __func__ = "qm_debug_check_frag" #5 0x0000563bc2e282b9 in qm_free (qmp=<optimized out>, p=0x7f0834533990, file=0x7f0a0a93420f "rtpengine: rtpengine_hash.c", func=0x7f0a0a935040 <__func__.2> "rtpengine_hash_table_free_entry", line=528, mname=0x7f0a0a92a000 "rtpengine") at core/mem/q_malloc.c:546 qm = <optimized out> f = 0x7f0834533950 size = <optimized out> next = <optimized out> prev = <optimized out> __func__ = "qm_free" #6 0x0000563bc2e2d51f in qm_shm_free (qmp=<optimized out>, p=0x7f0834533990, file=0x7f0a0a93420f "rtpengine: rtpengine_hash.c", func=0x7f0a0a935040 <__func__.2> "rtpengine_hash_table_free_entry", line=528, mname=0x7f0a0a92a000 "rtpengine") at core/mem/q_malloc.c:1532 No locals. #7 0x00007f0a0a922adb in rtpengine_hash_table_free_entry (entry=0x7f08263a3f80) at ./src/modules/rtpengine/rtpengine_hash.c:528 __func__ = "rtpengine_hash_table_free_entry" --Type <RET> for more, q to quit, c to continue without paging--info locals #8 0x00007f0a0a927dd4 in rtpengine_hash_table_lookup (callid=..., viabranch=..., op=op@entry=OP_OFFER) at ./src/modules/rtpengine/rtpengine_hash.c:428 entry = 0x7f08263a3f80 last_entry = 0x7f08174e0450 hash_index = 87 node = <optimized out> __func__ = "rtpengine_hash_table_lookup" #9 0x00007f0a0a90ec2b in select_rtpp_node_old (do_test=1, op=OP_OFFER, viabranch=..., callid=...) at ./src/modules/rtpengine/rtpengine.c:3810 node = 0x0 node = <optimized out> __func__ = "select_rtpp_node_old" __llevel = <optimized out> __kld = <optimized out> __llevel = <optimized out> __kld = <optimized out> #10 select_rtpp_node (callid=..., viabranch=..., queried_nodes_list=0x7f0a0de84430, queried_nodes=queried_nodes@entry=0, op=OP_OFFER, do_test=1) at ./src/modules/rtpengine/rtpengine.c:3864 node = 0x0 __func__ = "select_rtpp_node" #11 0x00007f0a0a91228a in rtpp_function_call (bencbuf=bencbuf@entry=0x7ffeb1d5bea0, msg=msg@entry=0x7f0a0de94350, op=<optimized out>, flags_str=<optimized out>, body_out=body_out@entry=0x7ffeb1d5be80, cl_field=cl_field@entry=0x7ffeb1d5be90) at ./src/modules/rtpengine/rtpengine.c:3178 ng_flags = {via = -1, to = 1, packetize = 0, transport = 256, directional = 0, dict = 0x7f0a0de98b78, flags = 0x7f0a0de98d08, direction = 0x7f0a0de98e68, replace = 0x7f0a0de98ec8, rtcp_mux = 0x7f0a0de98f28, sdes = 0x7f0a0de98f88, t38 = 0x7f0a0de99098, received_from = 0x7f0a0de98e08, codec = 0x7f0a0de990f8, codec_strip = 0x0, codec_offer = 0x0, codec_transcode = 0x0, codec_mask = 0x0, codec_set = 0x0, codec_except = 0x0, codec_accept = 0x0, codec_consume = 0x0, call_id = { s = 0x563bc30e195f <buf+287> "5783b150-6ad4-4e55-9555-decf4048c8fb\r\nCSeq: 23471 INVITE\r\nAllow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, MESSAGE, INFO, REFER\r\nk: replaces, histinfo\r\nX-UNIQUEI"..., len = 36}, from_tag = { s = 0x563bc30e18fb <buf+187> "47d9d572-1f09-46bf-b966-16988c17cf56\r\nt: <sip:02-5333@10.142.0.56>\r\nm: <sip:vxm@10.52.7.2:5081>\r\ni: 5783b150-6ad4-4e55-9555-decf4048c8fb\r\nCSeq: 23471 INVITE\r\nAllow: OPTIONS, REGISTER, SUBSCRIBE, NOTIF"..., len = 36}, to_tag = {s = 0x0, len = 0}} item = <optimized out> resp = <optimized out> viabranch = {s = 0x7f0a0dd15720 "z9hG4bKPje1c3efee-2490-4035-9e2e-b124ec630b820", len = 46} body = { s = 0x563bc30e1b33 <buf+755> "v=0\r\no=- 1936793669 1936793669 IN IP4 10.52.7.2\r\ns=VXM\r\nc=IN IP4 10.52.7.2\r\nt=0 0\r\nm=audio 18690 RTP/AVP 0 101\r\na=rtpmap:101 telephone-event/8000\r\na=fmtp:101 0-16\r\na=ptime:20\r\na=maxptime:140\r\na=sendre"..., len = 204} --Type <RET> for more, q to quit, c to continue without paging--list error = <optimized out> ret = 1 queried_nodes = 0 cont_type = <optimized out> node = <optimized out> cp = <optimized out> pv_val = {rs = {s = 0x7f083a53d3c0 "p", len = -1025336010}, ri = 47244640256, flags = 1} md5 = "\004\220\361\302;V\000\000\260r\366\302;V", '\000' <repeats 11 times>, "\345\323A\270\253\205\301" branch_buf = "\210\033\016\303;V\000\000\177W\315\302;V\000\000\216\033\016\303;V\000\000\000\345\323A\270\253\205\301\224\033\016\303;V\000\000\000\345\323A\270\253\205\301\220\201\351\r\n\177\000\000\000\345" result = <optimized out> t = <optimized out> branch_idx = <optimized out> __func__ = "rtpp_function_call" select_node = <optimized out> #12 0x00007f0a0a917346 in rtpp_function_call_ok (bencbuf=bencbuf@entry=0x7ffeb1d5bea0, msg=msg@entry=0x7f0a0de94350, op=<optimized out>, flags_str=<optimized out>, body=body@entry=0x7ffeb1d5be80, cl_field=cl_field@entry=0x7ffeb1d5be90) at ./src/modules/rtpengine/rtpengine.c:3371 ret = <optimized out> __func__ = "rtpp_function_call_ok" #13 0x00007f0a0a919708 in rtpengine_offer_answer (msg=0x7f0a0de94350, flags=<optimized out>, op=<optimized out>, more=0) at ./src/modules/rtpengine/rtpengine.c:4495 bencbuf = {pieces = 0x7f0a0de9a270, free_list = 0x0, error = 0} dict = <optimized out> body = {s = 0x7f0a0de94350 "\233@\006", len = 1104405760} newbody = <optimized out> anchor = <optimized out> pv_val = {rs = {s = 0x0, len = 177318755}, ri = 0, flags = 4} cur_body = {s = 0x0, len = 0} cl_field = {s = 0x0, len = 0} cl_repl = {s = 0x0, len = 0} __func__ = "rtpengine_offer_answer" error_free = <optimized out> #14 0x0000563bc2c77195 in sr_kemi_exec_func (ket=ket@entry=0x7f0a0a93d5c8 <sr_kemi_rtpengine_exports+72>, msg=<optimized out>, pno=pno@entry=1, vps=<optimized out>) at core/kemiexec.c:84 ``` #### Log Messages  ``` CRITICAL: {1 23471 INVITE 5783b150-6ad4-4e55-9555-decf4048c8fb} <core> [core/mem/q_malloc.c:148]: qm_debug_check_frag(): BUG: qm: prev. fragm. tail overwritten(c0c00a0d, abcdefed)[0x7f0834533950:0x7f0834533990]! Memory allocator was called from rtpengine: rtpengine_hash.c:528. Fragment marked by rtpengine: ../../core/parser/../ut.h:891. Exec from core/mem/q_malloc.c:546. CRITICAL: {1 23471 INVITE 5783b150-6ad4-4e55-9555-decf4048c8fb} <core> [core/mem/q_malloc.c:156]: qm_debug_check_frag(): BUG: qm: prev. fragm. tail overwritten [0x7f08345335b0:0x7f08345335f0] - fragment marked by core: core/msg_translator.c:2305 ``` #### SIP Traffic  ``` (paste your sip traffic here) ``` ### Possible Solutions  ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.8.5 (x86_64/linux) flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, 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, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_SEND_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. id: unknown compiled with gcc 12.2.0 ``` * **Operating System**:  ``` Distributor ID: Debian Description: Debian GNU/Linux 12 (bookworm) Release: 12 Codename: bookworm Linux gke-us-east1-external-sip-4b67daea-x3rj 5.15.0-1020-gke #25-Ubuntu SMP Thu Oct 27 05:38:18 UTC 2022 x86_64 GNU/Linux ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4179 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/4179(a)github.com>

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[kamailio/kamailio] Handling Duplicate Values in secfilter Module's kamcmd Commands (Issue #4091)
by AsedMorteza 08 Jun '25

08 Jun '25

**Description** The `secfilter` module in `kamcmd` currently allows duplicate entries when adding values to certain lists (e.g., blacklists, whitelists). This can lead to unexpected behavior and potential inconsistencies. Could you clarify the reason behind accepting duplicate values? Recently, I submitted a pull request to add delete commands to the `secfilter` module #4089. When a user, for example, executes: `kamcmd secfilter.del_bl user 1005` I iterate through the entire list to ensure all occurrences of `1005` are removed, as I realized duplicates might exist. This is inefficient and could be avoided by preventing duplicates in the first place. **Proposed Solutions** 1. **Prevent Duplicates in Existing `add` Commands:** * I can modify existing `add` commands to directly prevent the addition of duplicate values. This would simplify future operations and improve performance. 2. **Introduce New `add_unique` Commands:** * I can maintain the current `add` commands for backward compatibility. * I can introduce new `add_unique` commands (e.g., `secfilter.add_bl_unique`) that explicitly reject duplicate entries. **Recommendation** I recommend implementing the first solution (preventing duplicates in existing `add` commands) as it provides the most straightforward and efficient approach. **Further Considerations** * Consider adding a check for duplicates during the `add` operation and returning an appropriate error message if a duplicate is encountered. * Document the behavior of duplicate values in the `secfilter` module's documentation. **I would appreciate your feedback and guidance on the best course of action.** -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4091 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/4091(a)github.com>

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[kamailio/kamailio] Frequent hangs in Kamailio probably related due to lock contention in xhttp_prom module with high concurrency (Issue #4209)
by Henning Westerholt 06 Jun '25

06 Jun '25

henningw created an issue (kamailio/kamailio#4209) Frequent hangs in Kamailio probably related due to lock contention in xhttp_prom module. ### Environment: The systems are using 32 Kamailio worker processes for the relevant network interface, Its also using Prometheus counter increment operations more than 30 times in the cfg during INVITE processing. The Kamailio uses otherwise no database or other IO related services. Kamailio version 5.8.3, but no relevant changes in the xhttp_prom module could be found. ### Quick summary of the findings: Multiple systems showed frequent hangs in their Kamailio servers on a customer setup. It happens usually after a few hours that all Kamailio processes gets blocked, and no more traffic can be processed on the respective system. I have analysed three stack traces of the Kamailio on one of the system that showed the behaviour. Two without problems and one that was created from during a period where the server had problems. ### Details: Here some details of the stack traces from a problematic case. The relevant processes are from PID 494551 to 494582. The majority of all of these processes are blocked in paths related to the Prometheus module (PID 494551 to 494576): #### PID 494551: ``` #1 0x00007fc69ea5f053 in futex_get (lock=0x7fc4a147acd0) at ../../core/mem/../futexlock.h:108 v = 2 i = 1024 #2 0x00007fc69ea70f99 in prom_counter_inc (s_name=0x7fffe339ffa0, number=1, l1=0x7fffe339ff90, l2=0x0, l3=0x0) at prom_metric.c:1154 p = 0x6b __func__ = "prom_counter_inc" […] #14 0x00000000005ab179 in receive_msg (buf=0x9f47e0 <buf> "INVITE [sip:+1YYYYYYY737@10.XXX.XXX107](sip:+1YYYYYYYYYY737@10.XXX.XX.107) SIP/2.0\r\nRecord-Route: [sip:10.1XXX.XXX.104;lr=on;ftag=HK507HSy55p9F;dlgcor=62b91.985c3](sip:10.XXX.XXX.104;lr=on;ftag=HK507HSy55p9F;dlgcor=62b91.985c3)\r\nRecord-Route: [sip:10.XXX.XXX.117;r2=on;lr;ftag=HK507HSy55p9F](sip:10.XXX.XXX.117;r2=on;lr;ftag=HK507HSy55p9F)\r\nRecord-R"..., len=2819, rcv_info=0x7fffe33a28d0) at core/receive.c:518 ``` Most of the worker processes are in the same state as shown above. Some of the processes are also working in other Prometheus related operations: #### PID 494554: ``` #0 prom_metric_timeout_delete (p_m=0x7fc49ea102f0) at prom_metric.c:646 current = 0x7fc4a2810fd0 ts = 1744143945433 __func__ = "prom_metric_timeout_delete" l = 0x7fc4abffc808 #1 0x00007fc69ea676ce in prom_metric_list_timeout_delete () at prom_metric.c:668 p = 0x7fc49ea102f0 ``` ### Problem hypothesis: My hypothesis is that the hang is caused from lock contention around the Prometheus module. The relevant code uses only one lock, and this together with the extensive usage of the increment counters probably causes this issues under high load. The majority of the worker processed are occupied in the Prometheus path and are not working on SIP packets. This will cause of course an increase of the UDP queue and the described problems. In order to test this hypothesis we removed temporarily the Prometheus logic in the kamailio cfg and see if the issue still persists. The issue did not showed up again after two days of testing, when before it was observed after a few hours. ### Possible solutions: The Prometheus module probably needs some improvements to support better high-load and concurrency situations. On common approach is to split the locks, e.g. using a per process lock array and then combining the individual values in a second pass when read from outside. Alternatively the xhttp_prom module should be used only carefully in situations with a high concurrency setup. I have the full backtrace available, if helpful just let me know. -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4209 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/4209(a)github.com>

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[kamailio/kamailio] rtpengine: fix race condn (same ip:port) in parallel forks due to gencookie (PR #4139)
by Souradeep Bera 01 Jun '25

01 Jun '25

- avoid parallel calls to gencookie from generating the same cookie for rtpengine #### Pre-Submission Checklist    - [ ] Commit message has the format required by CONTRIBUTING guide - [ ] Commits are split per component (core, individual modules, libs, utils, ...) - [ ] Each component has a single commit (if not, squash them into one commit) - [ ] No commits to README files for modules (changes must be done to docbook files in `doc/` subfolder, the README file is autogenerated) #### Type Of Change - [ ] Small bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds new functionality) - [ ] Breaking change (fix or feature that would change existing functionality) #### Checklist:  - [ ] PR should be backported to stable branches - [ ] Tested changes locally - [ ] Related to issue #XXXX (replace XXXX with an open issue number) #### Description  You can view, comment on, or merge this pull request online at: https://github.com/kamailio/kamailio/pull/4139 -- Commit Summary -- * rtpengine: fix race condn assigning same ip:port due to gencookie in parallel forks -- File Changes -- M src/modules/rtpengine/rtpengine.c (3) -- Patch Links -- https://github.com/kamailio/kamailio/pull/4139.patch https://github.com/kamailio/kamailio/pull/4139.diff -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/pull/4139 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/pull/4139(a)github.com>

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[kamailio/kamailio] Possibly adjusting the SDP parser to be more lenient towards scenarios where a stream is being removed/rejected and connection-information "c=" is only available per media (no session-wide "c=") and the removed/rejected stream omits all fields (Issue #3982)
by thomas414 31 May '25

31 May '25

### Description I encountered an issue with a specific device that is receiving a T.38 fax. The call gets established towards the device normally with inband media, then the device requests T.38 media and tries to remove the audio media via sending port 0 in the ReInvite SDP. Also it sends connection-information only on the media level and there is no "c=" on the session level. Reading through the related RFCs and the kamailio code and discussing this on the mailing list, we came to the conclusion that kamailio is doing everything correct as per RFC. Though we were wondering if it would be possible to adjust the parser to be not as strict as it is right now, and allow a missing "c=" line on the media-level if the stream is removed/rejected via port 0, since i see no sense in requiring connection information. Of course we are also in contact with the vendor to hopefully adjust on their side. Here are the related RFCs: 1. RFC8866 5.7 `A session description MUST contain either at least one "c=" line in each media description or a single "c=" line at the session level. It MAY contain a single session-level "c=" line and additional media-level "c=" line(s) per-media-description, in which case the media-level values override the session-level settings for the respective media.` 2. RFC3264 8.2 `Existing media streams are removed by creating a new SDP with the port number for that stream set to zero. The stream description MAY omit all attributes present previously, and MAY list just a single media format.` At first i was especially confused by the RFC3264 8.2 part, since it seemed correct what the device is sending, but if you read carefully and keep the wording for SDP in mind only attributes ("a=") MAY be omitted. So a "c=" line should still be in the SDP for the removed media if it's not included on the session-level. Or do you see this differently? ### Expected behavior Kamailio allows and parses the SDP when there is no session-wide "c=", a media stream is being removed via port zero and there is no "c=" for this media stream and only the remaining media streams include a "c=" line. #### Actual observed behavior Kamailio throws an error when trying to parse the SDP. #### Log Messages ``` <core> [core/parser/sdp/sdp.c:523]: parse_sdp_session(): can't find media IP in the message ``` #### SIP Traffic ``` v=0 o=xmserver 1726638425 1726638427 IN IP4 169.254.1.1 s=xmserver t=0 0 m=audio 0 RTP/AVP 8 m=image 56002 udptl t38 c=IN IP4 169.254.1.1 a=sendrecv a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxFillBitRemoval:0 a=T38FaxTranscodingMMR:0 a=T38FaxTranscodingJBIG:0 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:72 a=T38FaxUdpEC:t38UDPRedundancy ``` ### Possible Solutions ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.8.3 (x86_64/linux) flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, 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, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_SEND_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. id: unknown compiled with gcc 12.2.0 ``` * **Operating System**: ``` Debian 12 Linux hostname 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3982 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3982(a)github.com>

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[kamailio/kamailio] Inactive video stream: can't find media IP in the message (Issue #3406)
by schoberw 31 May '25

31 May '25

### Description In some situations the other side UA must reply with an inactive media stream. E.g. if video was added but not supported by the other side. The UAS then must answer with an m=video 0 RTP/.. line. It seams that the video section must contain a c= line with an IP address for rtpengine to function. If there is no c line (no IP address) the SDP body cannot be parsed and thus no RTP proxy is invoked. ### Troubleshooting Not easy to reproduce since the answer must bei "wrong". Is it correct to reply an SDP body (media = video) like this? ``` m=video 0 RTP/AVPF 96 a=label:1 a=inactive a=mid:1 ``` Maybe not (but Audiocodes SBC lates LTS version does it) - so we are dependent on other side now that this service works. #### Reproduction reInvite with Video to a UA that has no video Support (e.g. Bria -> Snom). Drop the c line in the video part with some textops in 200 OK (just to reproduce of course). A -> B, connect the call A -> + video, B has no video support A presses hold #### Log Messages Incoming 200 OK after doing hold with an inactive video: ``` v=0 o=root 436040161 309284577 IN IP4 1.2.3.5 s=call t=0 0 m=audio 14200 RTP/AVPF 9 8 126 c=IN IP4 1.2.3.5 a=ptime:20 a=recvonly a=mid:0 a=rtpmap:9 G722/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:126 telephone-event/8000 a=fmtp:126 0-15 m=video 0 RTP/AVPF 96 a=label:1 a=inactive a=mid:1 Mar 27 17:52:22 c5p05es2-1 /usr/sbin/kamailio[2938205]: ERROR: <core> [core/parser/sdp/sdp.c:490]: parse_sdp_session(): can't find media IP in the message Mar 27 17:52:22 c5p05es2-1 /usr/sbin/kamailio[2938205]: INFO: <script>: >>> Sending Reply: 200 OK (1.2.3.4:443 -> 100.108.48.38:65251) ``` Compare to working SDP parsing: ``` a=rtpmap:9 G722/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:126 telephone-event/8000 a=fmtp:126 0-15 m=video 0 RTP/AVP 96 c=IN IP4 1.2.3.5 a=inactive a=mid:1 Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: ONREPLY_ROUTE[FORWARD] Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: ROUTE[RTPP_REPLY] Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: > 200 with video Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: > 200 with inactive video Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: > Remove inactive video Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: > Answer to WebRTC client: 200 - qijpuibkv6ufhnd282ks Mar 27 18:00:17 c5p05es2-1 /usr/sbin/kamailio[2942881]: INFO: <script>: >>> Sending Reply: 200 OK (91.237.65.14:443 -> 80.108.48.38:65388) ``` ### Possible Solutions Tried to fix in script: ``` if(sdp_with_media("video")) xlog("L_INFO", "> $rs with video"); if(sdp_with_active_media("video")) xlog("L_INFO", "> $rs with active video"); if(!sdp_with_active_media("video")) xlog("L_INFO", "> $rs with inactive video"); if(sdp_with_media("video") && !sdp_with_active_media("video")) { # try fix for RMT#60189 xlog("L_INFO", "> Remove inactive video"); sdp_remove_media("video"); msg_apply_changes(); # needed? } ``` But since sdpops cannot parse it cannot remove the buggy media, too. See the log: non of the xlog is logging. If there is inactive media the c line is not mandatory. The parser should accept this by adding a default IP of 0.0.0.0, if needed Doing tricks with textops is not a easy nor performant solution to accept this wrong SDP from other parties. ### Additional Information ``` version: kamailio 5.6.4 (x86_64/linux) 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, TLS_PTHREAD_MUTEX_SHARED 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. id: unknown compiled with gcc 10.2.1 ``` * **Operating System**: Debian Bullseye -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3406 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3406(a)github.com>

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[kamailio/kamailio] dispatcher: weight documentation and workaround for limitations (PR #4158)
by Christian Berger 31 May '25

31 May '25

- describe limitation of weight parameter - describe a potential workaround against those limitations  #### Pre-Submission Checklist    - [X] Commit message has the format required by CONTRIBUTING guide - [X] Commits are split per component (core, individual modules, libs, utils, ...) - [X] Each component has a single commit (if not, squash them into one commit) - [X] No commits to README files for modules (changes must be done to docbook files in `doc/` subfolder, the README file is autogenerated) #### Type Of Change - [X] Small bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds new functionality) - [ ] Breaking change (fix or feature that would change existing functionality) #### Checklist:  - [ ] PR should be backported to stable branches - [X] Tested changes locally - [ ] Related to issue #XXXX (replace XXXX with an open issue number) #### Description  We had problems understanding the weight parameter of the dispatcher module and wrote a little workaround against the problems we have found. This workaround in the configuration file improves behavior for setups with many dispatcher targets at the cost of more CPU load. You can view, comment on, or merge this pull request online at: https://github.com/kamailio/kamailio/pull/4158 -- Commit Summary -- * dispatcher: weight documentation and workaround for limitations -- File Changes -- M src/modules/dispatcher/doc/dispatcher_admin.xml (28) A src/modules/dispatcher/doc/weights.cfg (49) -- Patch Links -- https://github.com/kamailio/kamailio/pull/4158.patch https://github.com/kamailio/kamailio/pull/4158.diff -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/pull/4158 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/pull/4158(a)github.com>

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[kamailio/kamailio] kafka_send in event_route not work (Issue #4198)
by wangduanduan 31 May '25

31 May '25

wangduanduan created an issue (kamailio/kamailio#4198)  ### Description kafka_send in event_route like tcp:timeout, tcp:closed not work ``` event_route[tcp:closed] { if (kafka_send("my_topic", "tcp:closed")) { xlog("L_INFO", "send success tcp:closed"); } } event_route[tcp:timeout] { if (kafka_send("my_topic", "tcp:timeout")) { xlog("L_INFO", "send success tcp:timeout"); } } ``` in log, its show "send success tcp:closed", "send success tcp:timeout", but in kafka web ui, in the **my_topic**, can't find the "tcp:closed" or " tcp:timeout" message. --- but if the kafka_send in onreply_route, message will be send ok, in the kafka web ui, the "some_route" can be find. ``` onreplay_route[some_route]{ if (kafka_send("my_topic", "some_routet")) { xlog("L_INFO", "send success some_routet"); } } ```  ### Troubleshooting #### Reproduction  #### Debugging Data  ``` (paste your debugging data here) ``` #### Log Messages  ``` (paste your log messages here) ``` #### SIP Traffic i use tcpdump to capture the traffic between kamailio and kafka. - when use kafka_send in event_route, no packages captured.  ``` ``` ### Possible Solutions  ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` 5.6.1 ``` * **Operating System**: centos7  ``` (paste your output here) ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4198 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/4198(a)github.com>

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