It turns out that this is no early_media, there were simply successful
attempts with 183 Session Progress, which is why there was such a
misunderstanding, I’ll attach the snippet code again in plain text:
route { if (is_method("INVITE")) { create_dialog(); route(media); exit;
} } route[media] { if (has_body("application/sdp")) { rtpengine_offer();
} $json(reply) := $rtpquery;
$var(port)=$json_pretty(reply/tags/$ft/medias[0]/streams[0]/local port);
remove_body_part(); append_to_reply("Contact:
<sip:$rU@$socket_in(ip):$socket_in(port);transport=udp;did=$DLG_did>\r\n");
append_to_reply("Content-Type: application/sdp\r\n"); $var(body) =
$(rb{re.subst,/(IP4.).*/\1$socket_in(ip)/g}); $var(body) =
$(var(body){re.subst,/(audio.)...../\1$var(port)/g});
t_reply_with_body(200, "OK", $var(body));
rtpengine_play_media("call-id=$ci from-tag=$ft
file=/etc/rtpengine/media.wav"); async(sleep(10), after_media); }
route[after_media] { if (t_was_cancelled()) { rtpengine_delete(); exit;
} else { rtpengine_delete(); sl_send_reply(486,"Busy here"); exit; } }
and pined previous posts below :)
----------------------------------------------------------------------
Message: 2
Date: Fri, 3 Nov 2023 16:00:22 +0500
From: Dmitry Ponomaryov<iamha...@gmail.com>
To:users@lists.opensips.org
Subject: Re: [OpenSIPS-Users] Opensips and rtpengine_play_media not
absorbing ACK
Message-ID:<3971cbc2-7281-2299-4212-7f241e8b8...@gmail.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hello everyone, I would like to show my part of the code when playing
early media after 200OK, when creating dialogs, I substituted $DLG_did
in the contact of my dialog, and received the same $DLG_did for my
dialog in ACK, but OpenSIPS also continued to send 200OK , despite
having already received an ACK response.
route {
# initial invite
if (is_method("INVITE")) {
create_dialog();
route(early_media);
exit;
}
} route[early_media] { if (has_body("application/sdp")) {
rtpengine_manage(); } $json(reply) := $rtpquery;
$var(port)=$json_pretty(reply/tags/$ft/medias[0]/streams[0]/local port);
remove_body_part();
append_to_reply("Contact:
<sip:$rU@$socket_in(ip):$socket_in(port);transport=udp;did=$DLG_did>\r\n");
append_to_reply("Content-Type: application/sdp\r\n"); $var(body) =
$(rb{re.subst,/(IP4.).*/\1$socket_in(ip)/g}); $var(body) =
$(var(body){re.subst,/(audio.)...../\1$var(port)/g});
t_reply_with_body(200, "OK", $var(body));
rtpengine_play_media("call-id=$ci from-tag=$ft
file=/etc/rtpengine/media.wav"); async(sleep(10), after_early_media); }
route[after_early_media] { if (t_was_cancelled()) { rtpengine_delete();
exit; } else { rtpengine_delete(); sl_send_reply(486,"Busy here"); exit;
} }
I don’t know if Kevin example was with creating a dialog, but I also
noticed this problem through transaction... thanks
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Message: 1
Date: Thu, 2 Nov 2023 16:32:02 -0700
From: Kevin Kennedy<kennedy4...@gmail.com>
To: OpenSIPS users mailling list<users@lists.opensips.org>
Subject: [OpenSIPS-Users] Opensips and rtpengine_play_media not
absorbing ACK
Message-ID:
<cabdxsrxltp2_uex_upx1adg16af6gaetzjujutpki8c7h3k...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I am trying to build a solution where Opensips 3.2+ with RTPengine acts as
a UAC, answers a call with 200OK, plays media from file, and will terminate
the call right after playing announcement.
Opensips is responding with 200OK with SDP body and making the
correct changes for the IP, but when the ACK comes back from the UAS,
Opensips doesn't seem to absorb it and retransmits the 200OK.
Code snippet handling this scenario
rtpengine_manage("from-tag=$ft replace-session-connection
trust-address replace-origin codec-strip-g729",,$var(body));
append_to_reply("Contact:<sip:$socket_out>\r\n");
append_to_reply("Content-Type: application/sdp\r\n");
t_reply_with_body(200, "OK", $var(body));
rtpengine_play_media("from-tag=$ft
file=/etc/rtpengine/unk_num.wav");
sleep(10);
rtpengine_delete("from-tag=$ft");
#t_reply(603, "Decline");
exit();
What do I need to add to handle this scenario correctly?
Note: I was able to get this to work with Early Media (183
reply_with_body, and send t_reply(603, "Decline")), but we have customers
using late media invite as well, so the Early Media option wouldn't work in
that case.
Thank you.
Kevin Kennedy
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