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<tt>Hi Jan,<br>
<br>
no you are not misusing the module, you can put the same call
multiple times in the dialog module - of course, when call is
spiraling.<br>
<br>
In loose_route(), the function should match the Route header
corresponding to that passing through the server (in your case, A1
will have 2 Route headers - with different dialog ids ) - and at
each passing it should identify the corresponding Route header.<br>
<br>
Do you have a SIP capture showing the ACK that hits A1 first time
?<br>
<br>
Regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<br>
On 09/06/2012 05:26 AM, Jan Blom wrote:
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I have problems with my
dialog matching, using OpenSIPS 1.8.0. I have two edge
proxies, A1 and A2, and an intermediate proxy B.
<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">An INVITE is received by
A1 and passed on to B.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">B processes the request
and sends in to A2.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">A2 send request to
whatever destination that has been decided.<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">Both A1 and A2 want to
keep track on state during the call so they create dialogs.
So far so good.<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">However, B actually load
balance the requests so a request might come back to A1. A1
will then try to create a new dialog for the same INVITE.
Technically speaking this is the same dialog in terms of the
RFC, however there are two dialog data structures created. I
can see structures being allocated and the DID parameter in
the record route header filled in properly (different
values).<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">The problem is that the
dialog matching when calling loose_route() will not find the
first created dialog on subsequent requests (ACK or BYE). I
am using dlg_match_mode=0 (DID only).
<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">Am I misusing the dialog
modules when trying to create two dialogs for the same call
(on ingress and egress)?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Since I actually have
got two different DID parameters on two record route
headers, I cannot see why it shouldn’t work.<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 cannot seem to find
another way to do it, since I cannot know if I am back to
the same edge proxy or not.<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">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Jan<o:p></o:p></span></p>
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