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Hi Denis,<br>
<br>
From a proxy point of view, a 200OK means the dialog was establish.
A proxy cannot interfere with the ACK part - the acknowledgment is
done between end parties.<br>
<br>
If the ACK is missing (in an established dialog), the callee party
(according to RFC) must send a BYE (when finishing the 200 OK
retransmission) to the caller. This is something your callee
doesn't do.<br>
<br>
A simple work around is to use the dialog timeout in opensips:<br>
1) at INVITE time, when dialog is created, set a 5 seconds
timeout (dialog will be terminated by opensips, with BYE, in 5 secs
after being established - do not forget to set the BYE_ON_TIMEOUT
flag)<br>
2) at ACK, before loose_route() set a new timeout to some long,
long (3 hours?) value.<br>
<br>
So, if the ACK will mis, the 5 sec timeout will kick in and
terminate the dialog; otherwise, opensips will prelong the dialog on
ACK time.<br>
<br>
Regards,<br>
Bogdan<br>
<br>
On 04/28/2011 03:06 PM, Denis Putyato wrote:
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<p class="MsoNormal"><span lang="EN-US">Hello!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I noticed that cdr_flag
in acc modules marks dialog for accounting as answered even
there was no ACK on 200 OK.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">As a result, I have acc
record which has a big duration and status 200 OK.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you for any help.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<br>
<br>
<pre class="moz-signature" cols="72">--
Bogdan-Andrei Iancu
OpenSIPS eBootcamp - 2nd of May 2011
OpenSIPS solutions and "know-how"</pre>
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