15 Mar
2023
15 Mar
'23
3:48 a.m.
You can't send Cancel from the server side, it has to be sent by
originator of the initial request.
BYE ends successfull dialog, so it can't be sent also as you do not
establish the dialog yet.
On Tue, 14 Mar 2023, 18:56 , <jhayhoe(a)liquidweb.com> wrote:
I am looking to configure Kamailio and RTPEngine to
play a wav file for
any new calls during a scheduled asterisk server maintenance. I have set up
the following within route{} to send the call to a early_media route based
on a variable that I can set on the server using kamcmd.
route {
...
if ($sht(config=>maint)=="1") {
if (is_method("INVITE") && !has_totag()) {
xlog ("L_INFO","Ongoing maintenance. Call-ID:$ci |
Method:
$rm");
route(early_media);
}
}
...
}
route[early_media] {
xlog("Maintenance: handling early_media\n");
rtpengine_manage("direction=external direction=external");
$var(body) = $(rb{re.subst,/(IP4.).*/\1##server IP redacted##/g});
set_reply_body($var(body), "application/sdp");
t_send_reply("183", "Session Progress");
sleep(2);
unblock_dtmf("all");
play_media("file=/etc/kamailio/media/maintenance.wav");
sleep(21);
rtpengine_delete();
t_reply("480","Temporarily Unavailable");
}
This mostly works as I hear the recorded message in place of the ringing
tone when a call is processed by kamailio and then a busy signal is heard
as part of the 480 reply at the end. The sleep's are in place to match the
duration of the recorded message as otherwise the 480 is sent immediately
following the start of the play_media. Feel free to let me know if there is
a better solution to wait the duration of the media file and then proceed
with processing instead of using sleep().
Is there a way to instead send a CANCEL or a BYE instead of a 480 after
the wav file is played? I tried using t_cancel_callid("$ci", "$cs",
"0") as
well as a dlg_bye("all") at the end of the early_media route and neither
seemed to send any headers out.
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