[SR-Users] DMQ broadcasting crashes kamailio

[SamyGo]

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 at 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/sr-users/attachments/20200423/b5d129e9/attachment.html>