<div dir="ltr">Bogdan,<div><br></div><div>Understood, and thanks for the info.</div><div><br></div><div>However, I have some concerns with regards to the resulting CDR using the acc and drouting modules. I think if both GWs sent 200 OK at the same time, it would result in a CDR with the values of AVPs specified by carrier_id_avp and gw_id_avp drouting parameters set only to GW2. Also, if GW1 is the last GW in the gwlist and this type of race condition happens, the value of the AVPs will be set to blank.</div>
<div><br></div><div><br></div><div class="gmail_extra"><div class="gmail_quote">On Fri, Jul 5, 2013 at 2:15 AM, Bogdan-Andrei Iancu <span dir="ltr"><<a href="mailto:bogdan@opensips.org" target="_blank">bogdan@opensips.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div text="#000000" bgcolor="#ffffff">
<tt>Hello Ronald,<br>
<br>
If the first GW sent any reply before the timeout, than OpenSIPS
will cancel it before hitting the failure route. If no reply at
all sent by GW1, OpenSIPS will hit the failure route on timeout
without canceling. If after this point (call send to GW2) first GW
sends a reply :<br>
1) if a provisional reply (<200), it will be canceled on
the spot<br>
2) if a 200 ok reply -> it will be accepted and fwd to
calling device<br>
a) if the GW2 did not send a 200 OK, it will be canceled<br>
b) if GW2 also sent a 200 OK in the same time, both 200 OK
will be sent to calling device and it that device will decide what
call to keep<br>
<br>
Regards,<br>
</tt><div class="im">
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
<br></div><div><div class="h5">
On 07/04/2013 07:41 PM, Ronald Cepres wrote:
<blockquote type="cite">
<p dir="ltr">Bogdan,</p>
<p dir="ltr">Thanks for the informative reply. </p>
<p dir="ltr">What I really want to solve is a problem I encounter
when the first GW doesnt respond after a defined timeout then
Opensips does failover to next GW. A few seconds after the call
is routed to second GW, the first GW responds with 200 OK,
which may cause problems. It seems that the first GW has a slow
response time.</p>
<p dir="ltr">The solution I am thinking of to prevent this is to
send a cancel to the first GW before doing failover to next
gateway. Does this make sense or is there a better solution?</p>
<p dir="ltr">Thanks.</p>
<p dir="ltr">-Ronald</p>
<div class="gmail_quote">On Jul 4, 2013 11:58 PM, "Bogdan-Andrei
Iancu" <<a href="mailto:bogdan@opensips.org" target="_blank">bogdan@opensips.org</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div text="#000000" bgcolor="#ffffff"> <tt>Hello Ronald,<br>
<br>
When you hit the failure route, there is no ongoing branch
left (doesn't matter how many you previously created) - so
you should not worry about this.<br>
<br>
By SIP definition, a transaction fails (and OpenSIPS gets
into failure route) only when all branches failed.<br>
<br>
Regards,<br>
</tt>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
<br>
On 07/03/2013 10:43 PM, Ronald Cepres wrote:
<blockquote type="cite">
<div dir="ltr">Hi all,
<div><br>
</div>
<div>Is there a way I can cancel a pending branch before
doing a fail-over to next gateway (due to timeout from
previous gateway)? This way I can make sure that the
call to the previous gateway will not go through
anymore after fail-over to the next gateway, thus
preventing us "double-charged" situations if the
previous gateway and the new gateway both answered the
call. </div>
<div><br>
</div>
<div>Thanks in advance.</div>
<div>
<div><br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr"><br>
<div>Regards,</div>
<div><br>
</div>
<div>Ronald</div>
<div><br>
</div>
</div>
</div>
</div>
</div>
<pre><fieldset></fieldset>
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</pre>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><br><div>Regards,</div><div><br></div><div>Ronald Cepres</div><div><br></div></div>
</div></div>