Hello, you have to provide the version of kamailio for each reported kamailio issue, otherwise is hard to match with the source code. Use 'kamailio -v' to get version details. Cheers, Daniel On 23.04.20 23:36, SamyGo wrote: Hi, Is there a way to broadcast KDMQ to the cluster but not expect a reply back !?as far as I've read the source code dmq_bcast_message is exactly like dmq_send_message in a way that it expects a callback to be executed on response i.e expects a reply. So, the situation I'm facing is I'm broadcasting message to cluster and I do not want a reply back. The following two options result in crash & core dump. 1 - If my script doesn't respond back, by use of dmq_handle_message, it marks the destined servers as "inactive" and stops usrloc sync process which isn't desirable. 2 - If I respond back with the dmq_handle_message it crashes the Kamailio which just received this broadcasted message. Here is how its done in script: *broadcasting message to cluster:* dmq_bcast_message("userOnline", "$fu", "text/plain"); *Receiving and handling a broadcast message:* route[DMQ_HANDLE] { if(!(is_method("KDMQ") || $rm == "KDMQ")) return; if(is_method("KDMQ") || $rm == "KDMQ"){ if($rU =~ "userOnline"){ //user came online in cluster, resume transactions if-any suspended $avp(remoteUser) = $rb; } dmq_handle_message(); exit; } } *Related log lines:* Apr 23 21:15:48 kamailio[916]: ALERT: <script>: [da2c1-2f499] ------ DMQ_HANDLE: UserOnline Event Received ------ Apr 23 21:15:48 kamailio[916]: DEBUG: dmq [message.c:53]: ki_dmq_handle_message_rc(): dmq_handle_message [KDMQ sip:userOnline@9.8.7.123:5060] Apr 23 21:15:48 kamailio[916]: DEBUG: dmq [message.c:66]: ki_dmq_handle_message_rc(): dmq_handle_message peer found: userOnline Apr 23 21:15:48 kamailio[916]: DEBUG: <core> [core/receive.c:437]: receive_msg(): request-route executed in: 401461 usec Apr 23 21:15:48 kamailio[935]: DEBUG: dmq [worker.c:87]: worker_loop(): dmq_worker [2 935] lock acquired and crash/segfault.. Core dump: https://pastebin.com/S7ekCPfF Any help or pointers to solve this would be really appreciated. Best Regards, Sammy _______________________________________________ Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda

Hello, have you tried the suggestion from Charles in the other response? It can help figuring out where the problem resides. Now, from C point of view, I would need the following output from gdb of the core file: frame 0 p *reason frame 1 p *worker p *current_job I would also need to know the modparams for dmq and other dmq_* module, plus the list if modules for which you enabled dmq (eg, htable, dialog, presence, ...). Cheers, Daniel On 24.04.20 18:10, SamyGo wrote: Oops,apologize, missed that: version: kamailio 5.3.3 (x86_64/linux) 44ccb9-dirty 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: 44ccb9 -dirty compiled on 17:04:55 Apr 17 2020 with gcc 4.9.2 Tried this with version 5.0, 5.2, and now 5.3 same situation.. Thankyou for looking into this, Sammy On Fri, Apr 24, 2020 at 2:33 AM Daniel-Constantin Mierla < miconda(a)gmail.com&gt; wrote: Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda

Hi, Did you try the config snippet I provided? Basically dmq_handle_message() must be called if the message is not your own, otherwise the node discovery/health check will not work and you will see nodes disappearing as you described. Here it is again:     if(is_method("KDMQ")){         if($rU =~ "userOnline"){             //user came online in cluster, resume transactions if-any suspended             $avp(remoteUser) = $rb;             } else {             dmq_handle_message();         }     } Notice that we check for your own/custom message first, then call handle message if not matched. Let me know if it works. Cheers, Charles On Fri, 24 Apr 2020 at 19:52, SamyGo &lt;govoiper(a)gmail.com <mailto:govoiper@gmail.com>> wrote: Yes, I did read all(past 3+ years) his replies specific to DMQ and DMQ USRLOC and only one matched exact description and there has no resolution to it.  Github open+closed issues for DMQ didn't have anything similar either. Could it be something I'm doing wrong !?  Additional info:  One of the server is direct on Public IP and Other one is behind NAT. Another test setup where it consistently reproducible is two server behind NAT(AWS)  Here are the mod params.  Only usrloc sync is done via DMQ and no other module is using DMQ.  listen=udp:LocalIP:5060 advertise PublicIP:5060 modparam("dmq","server_address", DMQ_LOCAL_SERVER) modparam("dmq", "notification_address", DMQ_REMOTE_SERVER) modparam("dmq", "multi_notify", 0) //1 for DNS SRV modparam("dmq", "num_workers", 10) modparam("dmq", "ping_interval", 60) modparam("dmq_usrloc", "enable", 1) modparam("dmq_usrloc", "sync", 1) modparam("dmq_usrloc", "batch_size", 4000) modparam("dmq_usrloc", "batch_usleep", 1000) modparam("dmq_usrloc", "usrloc_domain", "location") Where:  DMQ_REMOTE_SERVER  = sip:PublicIP2:5060  GDB info as requested: Core was generated by `/usr/local/sbin/kamailio -w /tmp/kamailio -P /var/run/kamailio/kamailio.pid -f'. Program terminated with signal SIGSEGV, Segmentation fault. #0  0x00007f248c4cef15 in send_reply (msg=0x7f2469f88d40, code=0, reason=0x7ffd775e3ab8) at sl.c:276 276             if(reason->s[reason->len-1]=='\0') { (gdb) (gdb) (gdb) frame 0 #0  0x00007f248c4cef15 in send_reply (msg=0x7f2469f88d40, code=0, reason=0x7ffd775e3ab8) at sl.c:276 276             if(reason->s[reason->len-1]=='\0') { (gdb) p *reason $1 = {s = 0x0, len = 0} (gdb) (gdb) frame 1 #1  0x00007f24656c6549 in worker_loop (id=2) at worker.c:129 129                                     if(slb.freply(current_job->msg, peer_response.resp_code, (gdb) p *worker $3 = {queue = 0x7f2469f240a8, jobs_processed = 5, lock = {val = 2}, pid = 935} (gdb) (gdb) (gdb) p *current_job $6 = {f = 0x7f24656d6d8d <empty_peer_callback>, msg = 0x7f2469f88d40, orig_peer = 0x7f2469f6ed50, next = 0x0, prev = 0x0} (gdb) On Fri, Apr 24, 2020 at 1:30 PM Daniel-Constantin Mierla &lt;miconda(a)gmail.com <mailto:miconda@gmail.com>> wrote: Hello, have you tried the suggestion from Charles in the other response? It can help figuring out where the problem resides. Now, from C point of view, I would need the following output from gdb of the core file: frame 0 p *reason frame 1 p *worker p *current_job I would also need to know the modparams for dmq and other dmq_* module, plus the list if modules for which you enabled dmq (eg, htable, dialog, presence, ...). Cheers, Daniel On 24.04.20 18:10, SamyGo wrote: -- Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com> www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda> _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- *Charles Chance* Managing Director t. 0330 120 1200    m. 07932 063 891 Sipcentric Ltd. Company registered in England & Wales no. 7365592. Registered office: Faraday Wharf, Innovation Birmingham Campus, Holt Street, Birmingham Science Park, Birmingham B7 4BB.

Hello, you have to provide the version of kamailio for each reported kamailio issue, otherwise is hard to match with the source code. Use 'kamailio -v' to get version details. Cheers, Daniel On 23.04.20 23:36, SamyGo wrote: Hi, Is there a way to broadcast KDMQ to the cluster but not expect a reply back !?as far as I've read the source code dmq_bcast_message is exactly like dmq_send_message in a way that it expects a callback to be executed on response i.e expects a reply. So, the situation I'm facing is I'm broadcasting message to cluster and I do not want a reply back. The following two options result in crash & core dump. 1 - If my script doesn't respond back, by use of dmq_handle_message, it marks the destined servers as "inactive" and stops usrloc sync process which isn't desirable. 2 - If I respond back with the dmq_handle_message it crashes the Kamailio which just received this broadcasted message. Here is how its done in script: *broadcasting message to cluster:* dmq_bcast_message("userOnline", "$fu", "text/plain"); *Receiving and handling a broadcast message:* route[DMQ_HANDLE] { if(!(is_method("KDMQ") || $rm == "KDMQ")) return; if(is_method("KDMQ") || $rm == "KDMQ"){ if($rU =~ "userOnline"){ //user came online in cluster, resume transactions if-any suspended $avp(remoteUser) = $rb; } dmq_handle_message(); exit; } } *Related log lines:* Apr 23 21:15:48 kamailio[916]: ALERT: <script>: [da2c1-2f499] ------ DMQ_HANDLE: UserOnline Event Received ------ Apr 23 21:15:48 kamailio[916]: DEBUG: dmq [message.c:53]: ki_dmq_handle_message_rc(): dmq_handle_message [KDMQ sip:userOnline@9.8.7.123:5060] Apr 23 21:15:48 kamailio[916]: DEBUG: dmq [message.c:66]: ki_dmq_handle_message_rc(): dmq_handle_message peer found: userOnline Apr 23 21:15:48 kamailio[916]: DEBUG: <core> [core/receive.c:437]: receive_msg(): request-route executed in: 401461 usec Apr 23 21:15:48 kamailio[935]: DEBUG: dmq [worker.c:87]: worker_loop(): dmq_worker [2 935] lock acquired and crash/segfault.. Core dump: https://pastebin.com/S7ekCPfF Any help or pointers to solve this would be really appreciated. Best Regards, Sammy _______________________________________________ Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

On Fri, Apr 24, 2020 at 08:25:15PM -0400, kachi communication wrote: 1. This has nothing to do with the mailing list thread to which you are replying, and as such is quite a rude and inconsiderate intrusion; 2. There is a business mailing list specifically for commercial solicitations of this nature: https://lists.kamailio.org/cgi-bin/mailman/listinfo/business 3. You can find a list of providers of commercial Kamailio consulting and support here: https://www.kamailio.org/w/business-directory/ -- Alex -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Hi, I've applied the changes to the two files and taken some captures. I'm trying to find out if the 202 Accepted part is engaged or not, so far doesn't seem to show up in the pcaps. However if I put dmq_handle_msg() it goes and send back a 404 User Not Found from the message.c file. peer = find_peer(msg->parsed_uri.user); if(!peer) { LM_DBG("no peer found for %.*s\n", msg->parsed_uri.user.len, msg->parsed_uri.user.s); if(slb.freply(msg, 404, &dmq_404_rpl) < 0) { LM_ERR("sending reply\n"); goto error; } return returnval; } Not crashing now atleast. I'm going to keep on trying script combinations and see how to get the *202 Accepted DMQ.* Thanks, Sammy On Sat, Apr 25, 2020 at 7:55 AM kachi communication &lt;kachicomm(a)gmail.com&gt; wrote: