sr-dev May 2022

sr-dev@lists.kamailio.org

12 participants
287 discussions

[kamailio/kamailio] Kamailio 5.4.7 crash (Issue #3052)
by Igor Olhovskiy 26 Oct '22

26 Oct '22

### Description Kamailio running with mix of TLS/WebSocket/UDP transports. ### Troubleshooting #### Reproduction Really random issues, can't really catch it #### Debugging Data ``` [root@pbxphone-0866-fe-1 kamailio_crash]# gdb kamailio core.kamailio.222460.pbxphone-0866-fe-1.company.domain.1646903834 GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-120.el7 Copyright (C) 2013 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-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /root/kamailio_crash/kamailio...done. warning: exec file is newer than core file. [New LWP 222460] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `/usr/local/sbin/kamailio -P /run/kamailio/kamailio.pid -f /usr/local/etc/kamail'. Program terminated with signal 11, Segmentation fault. #0 0x00007f04af578716 in tls_complete_init (c=0x7f042fe11c98) at tls_server.c:236 236 data->ssl = SSL_new(dom->ctx[process_no]); Missing separate debuginfos, use: debuginfo-install audit-libs-2.8.5-4.el7.x86_64 bzip2-libs-1.0.6-13.el7.x86_64 elfutils-libelf-0.176-5.el7.x86_64 glibc-2.17-325.el7_9.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-51.el7_9.x86_64 libacl-2.2.51-15.el7.x86_64 libattr-2.4.46-13.el7.x86_64 libcap-2.22-11.el7.x86_64 libcap-ng-0.7.5-4.el7.x86_64 libcom_err-1.42.9-19.el7.x86_64 libdb-5.3.21-25.el7.x86_64 libffi-3.0.13-19.el7.x86_64 libgcc-4.8.5-44.el7.x86_64 libselinux-2.5-15.el7.x86_64 libstdc++-4.8.5-44.el7.x86_64 libunistring-0.9.3-9.el7.x86_64 libuuid-2.23.2-65.el7_9.1.x86_64 libxml2-2.9.1-6.el7_9.6.x86_64 lm_sensors-libs-3.4.0-8.20160601gitf9185e5.el7.x86_64 lua-5.1.4-15.el7.x86_64 net-snmp-agent-libs-5.7.2-49.el7_9.1.x86_64 net-snmp-libs-5.7.2-49.el7_9.1.x86_64 nspr-4.32.0-1.el7_9.x86_64 nss-3.67.0-4.el7_9.x86_64 nss-softokn-freebl-3.67.0-3.el7_9.x86_64 nss-util-3.67.0-1.el7_9.x86_64 openssl-libs-1.0.2k-24.el7_9.x86_64 pcre-8.32-17.el7.x86_64 perl-libs-5.16.3-299.el7_9.x86_64 popt-1.13-16.el7.x86_64 python-libs-2.7.5-90.el7.x86_64 rpm-libs-4.11.3-48.el7_9.x86_64 tcp_wrappers-libs-7.6-77.el7.x86_64 xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-19.el7_9.x86_64 (gdb) bt full #0 0x00007f04af578716 in tls_complete_init (c=0x7f042fe11c98) at tls_server.c:236 dom = 0x7f042fbcccf8 data = 0x7f042f96dec0 cfg = 0x7f042f96dec0 state = S_TLS_CONNECTING sname = 0x0 srvid = 0x0 __FUNCTION__ = "tls_complete_init" #1 0x00007f04af578d07 in tls_fix_connection_unsafe (c=0x7f042fe11c98) at tls_server.c:297 __FUNCTION__ = "tls_fix_connection_unsafe" #2 0x00007f04af580784 in tls_h_encode_f (c=0x7f042fe11c98, pbuf=0x7ffd8be909e0, plen=0x7ffd8be909d8, rest_buf=0x7ffd8be909e8, rest_len=0x7ffd8be909dc, send_flags=0x7ffd8be909c0) at tls_server.c:772 n = 0 offs = 0 ssl = 0x1 tls_c = 0x7f042fe11ca0 wr_buf = "\026\003\001\002\000\001\000\001\374\003\003\276,'P^\252j\027\021S\351\252\021\342(~\347\216\351\332Hh!\vb\024\361\324+\003\177\a\000\000\254\300\060\300,\300(\300$\300\024\300\n\000\245\000\243\000\241\000\237\000k\000j\000i\000h\000\071\000\070\000\067\000\066\000\210\000\207\000\206\000\205\300\062\300.\300*\300&\300\017\300\005\000\235\000=\000\065\000\204\300/\300+\300'\300#\300\023\300\t\000\244\000\242\000\240\000\236\000g\000@\000?\000>\000\063\000\062\000\061\000\060\000\232\000\231\000\230\000\227\000E\000D\000C\000B\300\061\300-\300)\300%\300\016\300\004\000\234\000<\000/\000\226\000A\300\022\300\b\000\026\000\023\000\020\000\r\300\r\300\003"... rd = {buf = 0x18 <Address 0x18 out of bounds>, pos = 22930096, used = 1771061403, size = -1947662592} wr = {buf = 0x4b6e74a40 <Address 0x4b6e74a40 out of bounds>, pos = -1226359400, used = 32516, size = -1562640382} ssl_error = 0 err_src = 0x7f04af5afc09 "TLS write:" ip_buf = "\000\000\000\000\000\000\000\000\230\034\341/\004\177\000\000\000\000\000\000\000\000\000\000\370@\347\266\001\000\000\000\340\b\351\213\375\177\000\000f\211Q\000\000\000\000\000\000\000\000\000\001\000\000\000\060\000\000\000\060\000\000" buf = 0x7ffd8be90fd0 "OPTIONS sip:73054@82.66.66.105:46050;transport=tls SIP/2.0\r\nVia: SIP/2.0/TLS tone.company.domain:5061;branch=z9hG4bKx.2854.1.0\r\nFrom: <sip:pbxphone@tone.company.domain>;tag=uloc-6228658a-43655-2c-31dd201c-6229c21a"... len = 308 x = 4 __FUNCTION__ = "tls_h_encode_f" #3 0x000000000051e729 in tcp_send (dst=0x7ffd8be90d60, from=0x0, buf=0x7ffd8be90fd0 "OPTIONS sip:73054@82.66.66.105:46050;transport=tls SIP/2.0\r\nVia: SIP/2.0/TLS tone.company.domain:5061;branch=z9hG4bKx.2854.1.0\r\nFrom: <sip:pbxphone@tone.company.domain>;tag=uloc-6228658a-43655-2c-31dd201c-6229c21a"..., len=308) at core/tcp_main.c:2093 c = 0x7f042fe11c98 ip = {af = 2, len = 4, u = {addrl = {1765950034, 4294967295}, addr32 = {1765950034, 0, 4294967295, 0}, addr16 = {16978, 26946, 0, 0, 65535, 65535, 0, 0}, addr = "RBBi\000\000\000\000\377\377\377\377\000\000\000"}} port = 46050 fd = 22 response = {139655966192064, 0} n = 0 con_lifetime = 9600 try_local_port = 5061 rest_buf = 0x0 t_buf = 0x7ffd8be90fd0 "OPTIONS sip:73054@82.66.66.105:46050;transport=tls SIP/2.0\r\nVia: SIP/2.0/TLS tone.company.domain:5061;branch=z9hG4bKx.2854.1.0\r\nFrom: <sip:pbxphone@tone.company.domain>;tag=uloc-6228658a-43655-2c-31dd201c-6229c21a"... rest_len = 0 t_len = 308 resp = 140726950756352 t_send_flags = {f = 0, blst_imask = 0} __FUNCTION__ = "tcp_send" #4 0x00007f04b2aa0ceb in ul_ka_send (kamsg=0x7ffd8be90fc0, kadst=0x7ffd8be90d60) at ul_keepalive.c:271 __FUNCTION__ = "ul_ka_send" #5 0x00007f04b2aa0b58 in ul_ka_urecord (ur=0x7f042fca3340) at ul_keepalive.c:239 ---Type <return> to continue, or q <return> to quit--- uc = 0x7f042fca3458 kabuf = "OPTIONS sip:73054@82.66.66.105:46050;transport=tls SIP/2.0\r\nVia: SIP/2.0/TLS tone.company.domain:5061;branch=z9hG4bKx.2854.1.0\r\nFrom: <sip:pbxphone@tone.company.domain>;tag=uloc-6228658a-43655-2c-31dd201c-6229c21a"... kabuf_len = 308 kamsg = { s = 0x7ffd8be90fd0 "OPTIONS sip:73054@82.66.66.105:46050;transport=tls SIP/2.0\r\nVia: SIP/2.0/TLS tone.company.domain:5061;branch=z9hG4bKx.2854.1.0\r\nFrom: <sip:pbxphone@tone.company.domain>;tag=uloc-6228658a-43655-2c-31dd201c-6229c21a"..., len = 308} vaddr = {s = 0x7f04b6e74008 "tone.company.domain", len = 12} vport = {s = 0x7f04b6e740f8 "5061", len = 4} sdst = {s = 0x7f042fca3770 "sip:82.66.66.105:46050;transport=tls", len = 36} sproto = {s = 0x81bb4b "TLS", len = 3} duri = {user = {s = 0x0, len = 0}, passwd = {s = 0x0, len = 0}, host = {s = 0x7f042fca3774 "82.66.66.105:46050;transport=tls", len = 12}, port = {s = 0x7f042fca3781 "46050;transport=tls", len = 5}, params = {s = 0x7f042fca3787 "transport=tls", len = 13}, sip_params = {s = 0x7f042fca3787 "transport=tls", len = 13}, headers = {s = 0x0, len = 0}, port_no = 46050, proto = 3, type = SIP_URI_T, flags = (unknown: 0), transport = {s = 0x7f042fca3787 "transport=tls", len = 13}, ttl = {s = 0x0, len = 0}, user_param = {s = 0x0, len = 0}, maddr = {s = 0x0, len = 0}, method = {s = 0x0, len = 0}, lr = {s = 0x0, len = 0}, r2 = {s = 0x0, len = 0}, gr = {s = 0x0, len = 0}, transport_val = {s = 0x7f042fca3791 "tls", len = 3}, ttl_val = {s = 0x0, len = 0}, user_param_val = {s = 0x0, len = 0}, maddr_val = {s = 0x0, len = 0}, method_val = {s = 0x0, len = 0}, lr_val = {s = 0x0, len = 0}, r2_val = {s = 0x0, len = 0}, gr_val = {s = 0x0, len = 0}} dproto = 3 '\003' he = 0xb88fa0 <he.5288> ssock = 0x7f04b6e73d98 idst = {send_sock = 0x7f04b6e73d98, to = {s = {sa_family = 2, sa_data = "\263\342RBBi\000\000\000\000\000\000\000"}, sin = {sin_family = 2, sin_port = 58035, sin_addr = {s_addr = 1765950034}, sin_zero = "\000\000\000\000\000\000\000"}, sin6 = {sin6_family = 2, sin6_port = 58035, sin6_flowinfo = 1765950034, sin6_addr = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = { 0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, sin6_scope_id = 0}, sas = {ss_family = 2, __ss_padding = "\263\342RBBi", '\000' <repeats 111 times>, __ss_align = 0}}, id = 0, send_flags = {f = 0, blst_imask = 0}, proto = 3 '\003', proto_pad0 = 0 '\000', proto_pad1 = 0} bcnt = 1 aortype = 0 i = 5 tv = {tv_sec = 1646903834, tv_usec = 680904} tnow = 1646903834 __FUNCTION__ = "ul_ka_urecord" #6 0x00007f04b2a6bb99 in mem_timer_udomain (_d=0x7f042f9c5388, istart=0, istep=1) at udomain.c:1234 ptr = 0x7f042fca3340 t = 0x7f0429d60470 <str_record_route_col> i = 28 #7 0x00007f04b2a9dd0e in synchronize_all_udomains (istart=0, istep=1) at dlist.c:966 res = 0 ptr = 0x7f042f9c5288 #8 0x00007f04b2a7b019 in ul_core_timer (ticks=1791845, param=0x0) at usrloc_mod.c:527 __FUNCTION__ = "ul_core_timer" #9 0x00000000004f1e69 in compat_old_handler (ti=28669522, tl=0x7f042f82e060, data=0x7f042f82e060) at core/timer.c:980 t = 0x7f042f82e060 #10 0x00000000004f29a5 in slow_timer_main () at core/timer.c:1105 n = 12 ret = 4294967295 tl = 0x7f042f82e060 i = 308 __FUNCTION__ = "slow_timer_main" #11 0x000000000042a707 in main_loop () at main.c:1765 i = 4 pid = 0 si = 0x0 si_desc = "udp receiver child=3 sock=128.141.18.117:5060 (tone.company.domain:5060)\000\000\000\000\000\000\000\000\200S/\004\177\000\000\000\000\000\000\000\000\000\000\220Q\234/\004\177\000\000\200\034\351\213\375\177\000\000\000R\234/\004\177\000\000B\227Z\257\004\177\000\000\300\023\006\267\004\177\000" nrprocs = 4 ---Type <return> to continue, or q <return> to quit--- woneinit = 1 __FUNCTION__ = "main_loop" #12 0x000000000043423e in main (argc=9, argv=0x7ffd8be921f8) at main.c:2942 cfg_stream = 0xf6a040 c = -1 r = 0 tmp = 0x7ffd8be935cc "" tmp_len = 1472 port = 960 proto = 32516 ahost = 0x0 aport = 0 options = 0x7d7ef8 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1413124693 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffd8be920b0 p = 0xf0b5ff <Address 0xf0b5ff out of bounds> st = {st_dev = 20, st_ino = 16553497, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1646819986, tv_nsec = 228520360}, st_mtim = {tv_sec = 1646903531, tv_nsec = 836398702}, st_ctim = {tv_sec = 1646903531, tv_nsec = 836398702}, __unused = {0, 0, 0}} tbuf = '\000' <repeats 392 times>... option_index = 0 long_options = {{name = 0x7da22f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7d56d4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7da234 "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x7da23a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7da240 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7da249 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x7da253 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7da25d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7da268 "modparam", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x7da271 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7da27c "debug", has_arg = 1, flag = 0x0, val = 1032}, { name = 0x7da282 "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) (gdb) info locals cfg_stream = 0xf6a040 c = -1 r = 0 tmp = 0x7ffd8be935cc "" tmp_len = 1472 port = 960 proto = 32516 ahost = 0x0 aport = 0 options = 0x7d7ef8 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1413124693 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffd8be920b0 p = 0xf0b5ff <Address 0xf0b5ff out of bounds> st = {st_dev = 20, st_ino = 16553497, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1646819986, tv_nsec = 228520360}, st_mtim = {tv_sec = 1646903531, tv_nsec = 836398702}, st_ctim = {tv_sec = 1646903531, tv_nsec = 836398702}, __unused = {0, 0, 0}} tbuf = '\000' <repeats 392 times>... option_index = 0 long_options = {{name = 0x7da22f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7d56d4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7da234 "alias", has_arg = 1, flag = 0x0, val = 1024}, { name = 0x7da23a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7da240 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7da249 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, { name = 0x7da253 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7da25d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7da268 "modparam", has_arg = 1, flag = 0x0, val = 1030}, { name = 0x7da271 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7da27c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7da282 "atexit", has_arg = 1, flag = 0x0, val = 1034}, { name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) cfg_stream = 0xf6a040 c = -1 r = 0 tmp = 0x7ffd8be935cc "" tmp_len = 1472 port = 960 proto = 32516 ahost = 0x0 aport = 0 options = 0x7d7ef8 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1413124693 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffd8be920b0 p = 0xf0b5ff <Address 0xf0b5ff out of bounds> st = {st_dev = 20, st_ino = 16553497, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1646819986, tv_nsec = 228520360}, st_mtim = {tv_sec = 1646903531, tv_nsec = 836398702}, st_ctim = {tv_sec = 1646903531, tv_nsec = 836398702}, __unused = {0, 0, 0}} tbuf = '\000' <repeats 392 times>... option_index = 0 long_options = {{name = 0x7da22f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7d56d4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7da234 "alias", has_arg = 1, flag = 0x0, val = 1024}, { name = 0x7da23a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7da240 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7da249 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, { name = 0x7da253 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7da25d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7da268 "modparam", has_arg = 1, flag = 0x0, val = 1030}, { name = 0x7da271 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7da27c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7da282 "atexit", has_arg = 1, flag = 0x0, val = 1034}, { name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) cfg_stream = 0xf6a040 c = -1 r = 0 tmp = 0x7ffd8be935cc "" tmp_len = 1472 port = 960 proto = 32516 ahost = 0x0 aport = 0 options = 0x7d7ef8 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1413124693 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffd8be920b0 p = 0xf0b5ff <Address 0xf0b5ff out of bounds> st = {st_dev = 20, st_ino = 16553497, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1646819986, tv_nsec = 228520360}, st_mtim = {tv_sec = 1646903531, tv_nsec = 836398702}, st_ctim = {tv_sec = 1646903531, tv_nsec = 836398702}, __unused = {0, 0, 0}} tbuf = '\000' <repeats 392 times>... option_index = 0 long_options = {{name = 0x7da22f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7d56d4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7da234 "alias", has_arg = 1, flag = 0x0, val = 1024}, { name = 0x7da23a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7da240 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7da249 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, { name = 0x7da253 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7da25d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7da268 "modparam", has_arg = 1, flag = 0x0, val = 1030}, { name = 0x7da271 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7da27c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7da282 "atexit", has_arg = 1, flag = 0x0, val = 1034}, { name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) cfg_stream = 0xf6a040 c = -1 r = 0 tmp = 0x7ffd8be935cc "" tmp_len = 1472 port = 960 proto = 32516 ahost = 0x0 aport = 0 options = 0x7d7ef8 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1413124693 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x7ffd8be920b0 p = 0xf0b5ff <Address 0xf0b5ff out of bounds> st = {st_dev = 20, st_ino = 16553497, st_nlink = 2, st_mode = 16832, st_uid = 0, st_gid = 0, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1646819986, tv_nsec = 228520360}, st_mtim = {tv_sec = 1646903531, tv_nsec = 836398702}, st_ctim = {tv_sec = 1646903531, tv_nsec = 836398702}, __unused = {0, 0, 0}} tbuf = '\000' <repeats 392 times>... option_index = 0 long_options = {{name = 0x7da22f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x7d56d4 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x7da234 "alias", has_arg = 1, flag = 0x0, val = 1024}, { name = 0x7da23a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x7da240 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x7da249 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, { name = 0x7da253 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x7da25d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x7da268 "modparam", has_arg = 1, flag = 0x0, val = 1030}, { name = 0x7da271 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x7da27c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x7da282 "atexit", has_arg = 1, flag = 0x0, val = 1034}, { name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __FUNCTION__ = "main" (gdb) list ... here goes a code of tls_server.c but if I'll leave it - Comment is too long (maximum is 65536 characters) (gdb) Line number 1513 out of range; tls_server.c has 1512 lines. ``` #### Log Messages ``` 2022-03-10T10:17:16.838905+01:00 pbxphone-0866-fe-1.company.domain /usr/local/sbin/kamailio[222489]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 27 ``` ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` kamailio -V version: kamailio 5.4.7 (x86_64/linux) a19fe1 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_BLACKLIST, 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. id: a19fe1 compiled on 20:40:47 Nov 22 2021 with gcc 4.8.5 ``` * **Operating System**:  ``` Linux pbxphone-0866-fe-1.company.domain 3.10.0-1160.15.2.el7.x86_64 #1 SMP Wed Feb 3 15:06:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3052 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3052(a)github.com>

5 13

[kamailio/kamailio] Unexpected kamailio 5.4 segfault (#2828)
by nmateo26 11 Oct '22

11 Oct '22

Dear all we have seen a core in a running production kamailio instance today, i attach you the bt in dropbox version: kamailio 5.4.4 (x86_64/linux) 0ddb01-dirty centos7 3.10.0-693.17.1.el7.x86_64 https://www.dropbox.com/s/fpunfs0o9aqhwww/kamailio_core_17agosto.txt?dl=0 ~~~ #0 0x00007f4c131446ad in print_lists (dlg=0x7f4b60abb2e8) at dlg_var.c:277 #1 0x00007f4c131467ff in pv_set_dlg_variable (msg=0x7f4c17592d70, param=0x7f4c17aa88d0, op=254, val=0x7ffc8de8c990) at dlg_var.c:443 #2 0x00000000004f9c82 in lval_pvar_assign (h=0x7ffc8de8ddc0, msg=0x7f4c17592d70, lv=0x7f4c17aa8998, rv=0x7f4c17aa8b18) at core/lvalue.c:352 #3 0x00000000004fa780 in lval_assign (h=0x7ffc8de8ddc0, msg=0x7f4c17592d70, lv=0x7f4c17aa8998, rve=0x7f4c17aa8b10) at core/lvalue.c:400 #4 0x00000000004c3f6f in do_action (h=0x7ffc8de8ddc0, a=0x7f4c17aa92b0, msg=0x7f4c17592d70) at core/action.c:1455 #5 0x00000000004c5cab in run_actions (h=0x7ffc8de8ddc0, a=0x7f4c17aa8668, msg=0x7f4c17592d70) at core/action.c:1581 #6 0x00000000004b8867 in do_action (h=0x7ffc8de8ddc0, a=0x7f4c17aac2b0, msg=0x7f4c17592d70) at core/action.c:1067 #7 0x00000000004c5cab in run_actions (h=0x7ffc8de8ddc0, a=0x7f4c17aa34c0, msg=0x7f4c17592d70) at core/action.c:1581 #8 0x00000000004c63ef in run_top_route (a=0x7f4c17aa34c0, msg=0x7f4c17592d70, c=0x7ffc8de8ddc0) at core/action.c:1666 #9 0x00007f4c16bbc0a2 in reply_received (p_msg=0x7f4c17592d70) at t_reply.c:2543 #10 0x00000000005d0b69 in do_forward_reply (msg=0x7f4c17592d70, mode=0) at core/forward.c:764 #11 0x00000000005d283b in forward_reply (msg=0x7f4c17592d70) at core/forward.c:865 #12 0x0000000000622dd2 in receive_msg ( buf=0xb034a0 <buf.7140> "SIP/2.0 100 Trying\r\nVia: SIP/2.0/UDP 79.170.68.186;branch=z9hG4bK895d.0e2ee1cb7a0cde9ed9e78d7f0ec22c00.0\r\nVia: SIP/2.0/UDP 79.170.71.172:5080;received=79.170.71.172;rport=5080;branch=z9hG4bKtmtBy7jaQ5"..., len=449, rcv_info=0x7ffc8de8e8b0) at core/receive.c:509 #13 0x0000000000521e67 in udp_rcv_loop () at core/udp_server.c:543 #14 0x0000000000429f56 in main_loop () at main.c:1689 #15 0x0000000000434034 in main (argc=13, argv=0x7ffc8de8f148) at main.c:2876 ~~~ Best regards, Noel -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2828

5 10

[kamailio/kamailio] RPC command dlg.profile_get_size with per_value response (Issue #2976)
by dvillaume 13 Sep '22

13 Sep '22

Hello, I would like to suggest you an implementation of the rpc command dlg.profile_get_size (on a valued profile) that would return a list of values and the number of current dialogs for any of them . This could be usefull if you want to get stats per customer_id/trunks/ips or whatever and don't want to get the whole table but only the size. Regards, David -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2976 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/2976(a)github.com>

2 3

[kamailio/kamailio] [presence] `active_watchers` entries not removed on timeout or expiration. (Issue #3074)
by Mike Moore 06 Sep '22

06 Sep '22

### Description  When handling a `PUBLISH` we call [handle_publish()](https://kamailio.org/docs/modules/5.5.x/modules/presence.… and `NOTIFY`s are sent to all of the corresponding `active_watchers` (as expected). However, when `NOTIFY`s timeout (`408`), we're seeing that the corresponding entries in the `active_watchers` table are _not_ being deleted as expected. Furthermore, we've noticed that `NOTIFY`s are being sent to `active_watchers` which are expired (i.e. `expires < UNIX_TIMESTAMP()`) and when we run `kamcmd presence.cleanup`, no expired entries are removed from the `active_watchers` table. We suspect that all of these things might be related--the common theme being that records aren't deleted when expected. ### Troubleshooting #### Reproduction  In our setup, we're using Kamailio as a "presence server" (via the [presence](https://kamailio.org/docs/modules/5.5.x/modules/presence.html), [presence_dialoginfo](https://kamailio.org/docs/modules/5.5.x/modules/presen…, and [presence_xml](https://kamailio.org/docs/modules/5.5.x/modules/presence_xml.… modules). We're using [`subs_db_mode`](https://kamailio.org/docs/modules/5.5.x/modules/presence.html#presence.p.subs_db_mode) `3` (DB-only scheme) and we have multiple Kamailio instances connected to a shared database (MySQL `8.0.27`). Everything seems to be working as expected. However, as we accumulated stale entries in the `active_watchers` table we're finding that we're wasting more and more time on sending `NOTIFY`s to black holes. We're generating a _lot_ of traffic and waiting for the timeouts to hit is causing memory issues and backups. Here are the relevant portions of our `kamailio.cfg` file: ``` # ----- presence params ----- modparam("presence", "db_table_lock_type", 0) # Disable locking; MySQL has issues with this is enabled. modparam("presence", "db_update_period", -1) # Disable synchronization. modparam("presence", "db_url", PRESENCE_DB_URL) modparam("presence", "expires_offset", 60) # Force the client to send an UPDATE before the old PUBLISH expires. modparam("presence", "max_expires", 1800) modparam("presence", "min_expires", 1700) modparam("presence", "publ_cache", 0) # Disable the PUBLISH cache since the database is shared. modparam("presence", "server_address", "sip:$CLUSTER_DOMAIN_NAME:5060") # This becomes the value of the Contact header. modparam("presence", "sip_uri_match", 1) # Use case insensitive URI matching. modparam("presence", "subs_db_mode", 3) # Database-only scheme; everything is stored in the database. modparam("presence", "notifier_processes", 0) # Caution! Under load a race condition can cause CSeq's to be reused. modparam("presence", "timeout_rm_subs", 1) # ----- presence_dialoginfo params ----- modparam("presence_dialoginfo", "force_single_dialog", 1) # Maybe not all phones support multiple "dialog" elements? modparam("presence_dialoginfo", "force_dummy_dialog", 1) # Maybe not all phones support a null body? # ----- presence_xml params ----- modparam("presence_xml", "db_url", PRESENCE_DB_URL) modparam("presence_xml", "force_active", 1) # Skip permission/XCAP checks. modparam("presence_xml", "force_dummy_presence", 1) # Default to a simple "open" status when presentity info is unavailable. # ... route[PRESENCE] { if (!is_method("PUBLISH|SUBSCRIBE")) { return; } if (!t_newtran()) { sl_reply_error(); exit; } if (is_method("PUBLISH")) { handle_publish(); t_release(); } else if (is_method("SUBSCRIBE")) { handle_subscribe(); t_release(); } exit; } ``` #### SIP Traffic  Here's a somewhat sanitized example (the message seems OK to us; however, the `Subscription-State: terminated; reason=timeout` does make us wonder--do we as the sender _know_ that the client is terminated/timed-out?): ``` 2022/04/05 21:09:55.209846 10.21.3.12:5060 -> 10.31.0.226:6060 NOTIFY sip:SomeUser@192.168.86.24:54639;alias=123.21.125.232~54639~1 SIP/2.0 Via: SIP/2.0/UDP presence-w.staging.internal:5060;branch=z9hG4bK43ea.648a1952000000000000000000000000.0 To: <sip:SomeOtherUser@9bfadf66-a77b-6a69-25f3-02d96d4aa946>;tag=2607596073 From: <sip:SomeUser@9bfadf66-a77b-6a69-25f3-02d96d4aa946>;tag=69309ea83adcd977af8788878e9f31b3-42e32342 CSeq: 66 NOTIFY Call-ID: 0_2607659559(a)192.168.86.24 Route: <sip:10.31.0.226:6060;r2=on;lr;ftag=2607596073>, <sip:55.8.122.110;r2=on;lr;ftag=2607596073> Content-Length: 710 Max-Forwards: 70 Event: dialog Contact: <sip:presence-w.staging.internal:5060> Subscription-State: terminated;reason=timeout Content-Type: application/dialog-info+xml <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="66" state="full" entity="sip:SomeUser@9bfadf66-a77b-6a69-25f3-02d96d4aa946"> <dialog id="0_1364146118(a)192.168.1.244" call-id="0_1364146118(a)192.168.1.244" direction="initiator"> <state>confirmed</state> <remote> <identity>sip:4355558565@9bfadf66-a77b-6a69-25f3-02d96d4aa945:5060</identity> <target uri="sip:4355558565@9bfadf66-a77b-6a69-25f3-02d96d4aa946:5060"/> </remote> <local> <identity>sip:SomeUser@9bfadf66-a77b-6a69-25f3-02d96d4aa946:5060</identity> <target uri="sip:SomeUser@123.130.50.202:58872"/> </local> </dialog> </dialog-info> ``` ### Possible Solutions  We didn't see any functions in the `presence` module that we could call directly to clean things up. One thought we had was to manually run some database commands from `event_route[presence:notify-reply]` (or in a `reply_route`). We've noticed that once the problematic entries are manually removed from the database that we no longer attempt to send `NOTIFY`s to the defunct destinations. ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` version: kamailio 5.5.4 (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**:  ``` $ lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 11 (bullseye) Release: 11 Codename: bullseye $ uname -a Linux ip-10-21-3-12 5.10.0-13-cloud-amd64 #1 SMP Debian 5.10.106-1 (2022-03-17) x86_64 GNU/Linux ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3074 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3074(a)github.com>

2 4

[kamailio/kamailio] Ability to reload location attributes at runtime (#2299)
by Sergiu Pojoga 26 Aug '22

26 Aug '22

### Description Looking for a mechanism to reload Location attributes at runtime. Having both registered and permanent Contacts under AoR, with Attributes from `usrloc` to be used for various routing decisions. This is about attributes of permanent Contacts. Registered ones have `xavp_contact` of `usrloc` to store attributes during registration. **Problem:** Only way to make it work is: 1. adding a permanent Contact using `rpc ul.add` 2. assigning attributes in DB `location_attr` per RUID (can't find an rpc function for attributes) 3. restart Kamailio modparam("usrloc", "db_mode", 1) modparam("usrloc", "db_load", 1) This however is far from ideal, having to restart Kamailio for every change in attributes of a Contact. ### Expected behavior #### Actual observed behavior #### Debugging Data ``` (paste your debugging data here) ``` #### Log Messages  ``` (paste your log messages here) ``` #### SIP Traffic  ``` (paste your sip traffic here) ``` ### Possible Solutions  ### Additional Information * **Kamailio Version** - output of `kamailio -v` version: kamailio 5.3.3 (x86_64/linux) 44ccb9 * **Operating System**:  ``` (paste your output here) ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2299

3 8

[kamailio/kamailio] dialog: not able to set the hangup_reason , when we hangup calls using xmlrpc. (#1737)
by Surendra Tiwari 26 Aug '22

26 Aug '22

### Description We are using xmlrpc to terminate the calls once customer balance reaches to zero. call got terminated but we will not be able to set the dialog variable related to hangup_reason. There should be a way during dlg.terminate_dlg xmlrpc request that if i mention the some parameter then it should set before sending bye to callee and caller.  ### Troubleshooting #### Reproduction  #### Debugging Data  ``` (paste your debugging data here) ``` #### Log Messages  ``` (paste your log messages here) ``` #### SIP Traffic  ``` (paste your sip traffic here) ``` ### Possible Solutions  ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` root@ip-172-31-4-160:/etc/kamailio# kamailio -version version: kamailio 5.1.4 (x86_64/linux) 6ebfda flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 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_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: 6ebfda compiled on 11:48:26 Sep 7 2018 with gcc 4.8.4 ``` * **Operating System**:  ``` root@ip-172-31-4-160:/etc/kamailio# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty root@ip-172-31-4-160:/etc/kamailio# uname -a Linux ip-172-31-4-160 3.13.0-143-generic #192-Ubuntu SMP Tue Feb 27 10:45:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1737

2 5

[kamailio/kamailio] keep new features in a file in the repository (#668)
by Victor Seva 26 Aug '22

26 Aug '22

This will allow us to point https://www.kamailio.org/wiki/features/new-in-devel to the file and "force" developers to update that file with the new features when they are introduced in the repository Remaining developers to upgrade the wiki seems pointless and anyone can create a PR for changes --- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/668

4 4

[kamailio/kamailio] kazoo: consuming of events fails if message has no body (#1837)
by mihovilkolaric 26 Aug '22

26 Aug '22

### Description Consuming messages without message body fails due to a JSON parsing error: ``` ERROR: kazoo [kz_json.c:287]: kz_json_parse(): Error parsing json: unexpected end of data ERROR: kazoo [kz_json.c:288]: kz_json_parse(): ERROR: kazoo [kz_amqp.c:2960]: kz_amqp_send_worker_event(): error parsing json body ``` This makes it unable to consume messages from RabbitMQ's event exchange plugin ( https://www.rabbitmq.com/event-exchange.html ), as the documentatin states: **"The message body is always blank."** ### Possible Solutions As a possible fix I tried following change in kz_amqp.c: ``` void kz_amqp_send_worker_event(kz_amqp_server_ptr server_ptr, amqp_envelope_t* envelope, kz_amqp_bind_ptr bind) { char buffer[100]; kz_amqp_cmd_ptr cmd = NULL; kz_amqp_consumer_delivery_ptr ptr = NULL; json_obj_ptr json_obj = NULL; json_object* JObj = NULL; str* message_id = NULL; int idx = envelope->channel-1; int worker = 0; int _kz_server_id = server_ptr->id; int msg_size = envelope->message.body.len; //begin of changes int routingkey_size = envelope->routing_key.len; if (msg_size == 0 && routingkey_size > 0 ) { char *routingkey_data = pkg_malloc(routingkey_size + 1); memset(routingkey_data, 0, routingkey_size + 1); memcpy(routingkey_data, (char*)envelope->routing_key.bytes, routingkey_size); LM_DBG("Message size: %d\n", msg_size); LM_DBG("Routing Key: %s\n", routingkey_data); char *pos = strchr(routingkey_data,'.'); while (pos){ *pos = '_'; pos = strchr(pos,'.'); } LM_DBG("New Routing Key: %s\n", routingkey_data); sprintf(buffer, "kazoo:%s", routingkey_data); if(kz_amqp_consumer_fire_event(buffer) != 0) { LM_ERR("kazoo:%s not found", routingkey_data); } pkg_free(routingkey_data); return; } char *json_data = pkg_malloc(msg_size + 1); if(!json_data) { LM_ERR("no more package memory available. needed %d\n", msg_size + 1); return; } char *json_data = pkg_malloc(msg_size + 1); //end of changes if(!json_data) { LM_ERR("no more package memory available. needed %d\n", msg_size + 1); return; } ``` The change is rather simple: If there is no message-body supplied, the event-route _kazoo:<binding_key>_ is called (after replacing any '.' with '_' in the routing_key). -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1837

3 6

[kamailio/kamailio] dialog: set $rs when failed TCP send (#2867)
by sergey-safarov 26 Aug '22

26 Aug '22

### Description I use TCP transport to relay SIP messages. When Kamailio cannot connect to another server then Kamailio generates response `408 Request Timeout`. inside `event_route[dialog:failed]` route block I check error code `$rs` but this value is `null`. This happens because Kamailio does not able to relay SIP messages and is not able to receive responses. But `tm` module generates a response `408 Request Timeout` and will be fine to init `$rs` pseudo-variable using tm module response. ### Expected behavior `$rs` pseudo-variable contains `tm` module response when kamailio does not receive a response from another server. #### Actual observed behavior `$rs` pseudo-variable contains `null` value when kamailio does not receive a response from another server. To check you can use ``` event_route[dialog:failed] { $var(code_xxx) = $(rs{re.subst,/([0-9])[0-9]{2}/\1xx/}); xlog("L_INFO", "websocket|log|dialog failed $rs; $var(code_xxx)\n"); } ``` And relay SIP message to host that reachable. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2867

3 4

[kamailio/kamailio] Path MTU handling; implicit IPv4 assumption, suggested solution for IPv6 (Issue #3119)
by vanrein 26 Aug '22

26 Aug '22

### Description Larger SIP frames get dropped when sent over UDP and IPv6. The sending side has MTU 1500 and the receiving side has MTU 1492. This is an IPv6-only setup, so this is problematic. Also, pulling down the MTU of a general server for a tunneled peer would smear like an oil stain. The suggestion to fallback on TCP feels like a hack. ### Troubleshooting #### Reproduction Send a SIP message to a network interface with a lower MTU than the submitted frame size. #### Debugging Data None, transmission works fine. #### Log Messages None, transmission works fine. #### SIP Traffic Irrelevant. #### Code Investigation I explored the Kamailio source code for MTU handling. https://github.com/kamailio/kamailio/blob/81265e41b52cfda9a284233c93683522a… * This defaults to switching off the Don't Fragment bit on IPv4 frames, to allow them to be broken up downstream. * This should check for an IPv4 socket, because (at least) Linux has a separate symbolic value `IPV6_MTU_DISCOVER` * Note that IPv6 is never broken up by routers; they always return ICMPv6 message Packet Too Big * Note that IPv6 Path MTU discovery by the kernel is automatic only for connected UDP sockets * Since Kamailio uses unconnected UDP sockets, Path MTU issues cause packets to be dropped * Note that such packet drops depend on a somewhat dynamic SIP message size, causing random behaviour * I therefore suggest that Kamailio is lacking in some of its IPv6 logic https://github.com/kamailio/kamailio/blob/81265e41b52cfda9a284233c93683522a… * This enables the reporting of ICMP errors, including Path MTU but also other useful things like Host Not Found * This should check for an IPv4 socket, because (at least) Linux has a separate symbolic value `IPV6_RECVERR` * Note that the same behaviour is available on BSD, so it need not be specific to Linux * Note that handling errors is done with `recvmsg()` with a flag `MSG_ERRQUEUE`, which is not used in Kamailio * Note that the ancillary data from `recvmsg()` holds data to cleverly handle ICMP or ICMPv6 responses * I therefore suggest that Kamailio is lacking a fair chunk of its ICMP and ICMPv6 logic * I expect that this may bring efficiency gains due to faster closing of transactions ### Possible Solutions I have been thinking about ways to lower MTU values only for some peers. 1. Using connected sockets might work, possibly as an alternative when Path MTU problems arise. It might not scale however. 2. Every socket could have an extra sending socket set to a lower MTU. The use of `SO_REUSEADDR` seems to allow for that. 3. Before falling back on an extra socket, the desired MTU could be set. Alternatively, as for IPv6, an MTU of 1280 might be considered in many cases: - *If you can carry 6 out of 8 coffee mugs from the kitchen, you need to walk twice, and 4+4 is easier than 6+2* - Anything over the MTU splits into at least 2 frames - The headers added are 40 bytes IPv6 header and 8 bytes Fragment Extension Header - 2 frames can hold a single frame of 2*1280-40-8 = 2512 bytes - Up to 2512 bytes original MTU, breakup in 1280 byte frames will be fine - 3 frames are going to be useful for larger frames, then a similar style can be used - This might help to decide whether 1280 or a higher MTU is most desirable ### Additional Information ``` Kamailio 5.2.1 from Debian stable ``` * **Operating System**: ``` Linux Debian stable on kernel 4.19.0 ``` (I don't suppose it matters, this code has been around for ages. I used permalinks for stable reference). -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3119 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3119(a)github.com>

3 12

← Newer
1
...
6
7
8
9
10
11
12
...
29
Older →

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

sr-dev May 2022