<div dir="ltr">Have you double checked it's not a firewall issue on the SIP proxy?<div><br></div><div>The transport is typically UDP so there is a fair chance it's blocked.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 27 Oct 2020 at 19:05, John Quick <<a href="mailto:john.quick@smartvox.co.uk">john.quick@smartvox.co.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Using OpenSIPS v2.4.8 and the latest release of rtpengine. The same was also<br>
happening with some older releases. I upgraded to see if it would help.<br>
<br>
When OpenSIPS receives BYE, the script calls rtpengine_delete() but I can<br>
see from xlog messages before and after the call that the function is taking<br>
up to 5 seconds to return.<br>
This is also reflected in the logs on the server where rtpengine is hosted:<br>
<br>
Oct 27 18:06:12 vps684757 rtpengine: INFO: [d2s4qf6thm2tmtg40khg]: Received<br>
command 'delete' from <a href="http://83.120.14.234:56677" rel="noreferrer" target="_blank">83.120.14.234:56677</a><br>
Oct 27 18:06:12 vps684757 rtpengine: INFO: [d2s4qf6thm2tmtg40khg]:<br>
Scheduling deletion of call branch '5cclfhu59e' (via-branch '') in 12<br>
seconds<br>
Oct 27 18:06:12 vps684757 rtpengine: INFO: [d2s4qf6thm2tmtg40khg]: Replying<br>
to 'delete' from <a href="http://83.120.14.234:56677" rel="noreferrer" target="_blank">83.120.14.234:56677</a> (elapsed time 0.000192 sec)<br>
Oct 27 18:06:13 vps684757 rtpengine: INFO: Detected command from<br>
<a href="http://83.120.14.234:56677" rel="noreferrer" target="_blank">83.120.14.234:56677</a> as a duplicate<br>
Oct 27 18:06:14 vps684757 rtpengine: INFO: Detected command from<br>
<a href="http://83.120.14.234:56677" rel="noreferrer" target="_blank">83.120.14.234:56677</a> as a duplicate<br>
Oct 27 18:06:15 vps684757 rtpengine: INFO: Detected command from<br>
<a href="http://83.120.14.234:56677" rel="noreferrer" target="_blank">83.120.14.234:56677</a> as a duplicate<br>
<br>
It looks as if OpenSIPS is failing to detect/recognise the reply from<br>
rtpengine. This only happens for the delete command - I have no problem with<br>
offer and answer.<br>
<br>
I do not generally see any error messages in the opensips logs, but once it<br>
did report timeout waiting for a response from rtpengine.<br>
<br>
John Quick<br>
Smartvox Limited<br>
Web: <a href="http://www.smartvox.co.uk" rel="noreferrer" target="_blank">www.smartvox.co.uk</a><br>
<br>
<br>
<br>
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</blockquote></div>
<br>
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