Hello,
I have a question about the rtpengine module and how to use it via KEMI/python.
Will processing of the native script stop when rtpengine_manage returns with an error? Or will it continue and will the SDP be forwarded unchanged?
#!ifdef WITH_RTPENGINE if(nat_uac_test("8")) { rtpengine_manage("SIP-source-address replace-origin replace-session-connection"); } else { rtpengine_manage("replace-origin replace-session-connection"); } #!else
Regards, Wolter
On Oct 22, 2024, at 8:47 am, Wolter Eldering via sr-users sr-users@lists.kamailio.org wrote:
Hello,
I have a question about the rtpengine module and how to use it via KEMI/python.
Will processing of the native script stop when rtpengine_manage returns with an error? Or will it continue and will the SDP be forwarded unchanged?
The second one. However, mind the timeout modparams for the `rtpengine` control module. With the defaults, outreach efforts to an unreachable RTPEngine (assuming that's the error) will rapidly block your SIP worker processes.
-- Alex
On 22 Oct 2024, at 15:08, Alex Balashov via sr-users sr-users@lists.kamailio.org wrote:
On Oct 22, 2024, at 8:47 am, Wolter Eldering via sr-users sr-users@lists.kamailio.org wrote:
Hello,
I have a question about the rtpengine module and how to use it via KEMI/python.
Will processing of the native script stop when rtpengine_manage returns with an error? Or will it continue and will the SDP be forwarded unchanged?
The second one. However, mind the timeout modparams for the `rtpengine` control module. With the defaults, outreach efforts to an unreachable RTPEngine (assuming that's the error) will rapidly block your SIP worker processes.
In that case is it not better to return an error instead of letting the signalling succeed and the media broken or insecure?
--- kamailio.cfg 2024-10-23 09:00:21 +++ kamailio.cfg.orig 2024-10-23 09:00:53 @@ -882,12 +882,7 @@
#!ifdef WITH_RTPENGINE if(nat_uac_test("8")) { - if (!rtpengine_manage("SIP-source-address replace-origin replace-session-connection")) { - xlog("RTPENGINE: failed to manage call\n"); - sl_reply_error(); - exit; - } - } + rtpengine_manage("SIP-source-address replace-origin replace-session-connection"); } else { rtpengine_manage("replace-origin replace-session-connection"); } @@ -1092,4 +1087,3 @@ #!endif return; }
Not sure how the handle the failure in case rtpengine_manage fails handeling the reply or ACK with SDP.
UAC -> proxy -> UAS
<-- 200 with SDP rtpengine_manage failure 500 <-- --> CANCEL --> ACK
--> ACK with SDP rtpengine_manage failure BYE <-- --> CANCEL 200 -->
-- Alex
-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com Tel: +1-706-510-6800
Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:
Hi,
rtpengine_manage() will return -1 if any errors happen. You need to check the return code in kamailio cfg file and explicitly end SIP routing logic if you want so. Otherwise, SIP routing logic will continue.
Thanks, Stefan
On 10/23/24 10:29, Wolter Eldering via sr-users wrote:
On 22 Oct 2024, at 15:08, Alex Balashov via sr-users sr-users@lists.kamailio.org wrote:
On Oct 22, 2024, at 8:47 am, Wolter Eldering via sr-users sr-users@lists.kamailio.org wrote:
Hello,
I have a question about the rtpengine module and how to use it via KEMI/python.
Will processing of the native script stop when rtpengine_manage returns with an error? Or will it continue and will the SDP be forwarded unchanged?
The second one. However, mind the timeout modparams for the `rtpengine` control module. With the defaults, outreach efforts to an unreachable RTPEngine (assuming that's the error) will rapidly block your SIP worker processes.
In that case is it not better to return an error instead of letting the signalling succeed and the media broken or insecure?
--- kamailio.cfg2024-10-23 09:00:21 +++ kamailio.cfg.orig2024-10-23 09:00:53 @@ -882,12 +882,7 @@
#!ifdef WITH_RTPENGINE if(nat_uac_test("8")) { - if (!rtpengine_manage("SIP-source-address replace-origin replace-session-connection")) { - xlog("RTPENGINE: failed to manage call\n"); - sl_reply_error(); - exit; -} - } +rtpengine_manage("SIP-source-address replace-origin replace-session-connection"); } else { rtpengine_manage("replace-origin replace-session-connection"); } @@ -1092,4 +1087,3 @@ #!endif return; }
Not sure how the handle the failure in case rtpengine_manage fails handeling the reply or ACK with SDP.
UAC -> proxy -> UAS
<-- 200 with SDP rtpengine_manage failure 500 <-- --> CANCEL --> ACK
--> ACK with SDP rtpengine_manage failure BYE <-- --> CANCEL 200 -->
-- Alex
-- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com Tel: +1-706-510-6800
Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:
Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email tosr-users-leave@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:
On Oct 23, 2024, at 3:29 am, Wolter Eldering via sr-users sr-users@lists.kamailio.org wrote:
In that case is it not better to return an error instead of letting the signalling succeed and the media broken or insecure?
I suppose this is a matter ripe for controversy. The answer might depend on whether you have a fallback scheme absent RTPEngine, and whether you want calls to overtly fail as a matter of optics and/or politics. :-)
-- Alex
-
Alex Balashov -
Stefan Mititelu -
Wolter Eldering