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<tt>Some update here, to </tt><tt>keep the list also informed.</tt><tt><br>
</tt><tt><br>
</tt><tt>I re-checked the code and I found some regression in CANCEL
handling - this was added last year with commit
4747da559f4df161441be8373488dee9fd16c282 when support for
"Content-Disposition: no-cancel" was added.</tt><tt><br>
</tt><tt>
</tt><tt><a class="moz-txt-link-freetext"
href="https://github.com/OpenSIPS/opensips/commit/4747da559f4df161441be8373488dee9fd16c282">https://github.com/OpenSIPS/opensips/commit/4747da559f4df161441be8373488dee9fd16c282</a></tt><tt><br>
</tt><tt><br>
</tt><tt>Also I just pushed a fix (on master) for this issue </tt><tt><br>
</tt><tt>
<a class="moz-txt-link-freetext" href="https://github.com/OpenSIPS/opensips/commit/f1a6d0d8e46c4aff9f203f2eb7e85a2b1e40cf92">https://github.com/OpenSIPS/opensips/commit/f1a6d0d8e46c4aff9f203f2eb7e85a2b1e40cf92</a></tt><tt><br>
</tt><tt><br>
</tt><tt>Richard, would you please test it also and confirm the fix,
so I can do safe backport to 3.0 and 2.4 ?</tt><tt><br>
</tt><tt><br>
</tt><tt>Many thanks,</tt><br>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a>
OpenSIPS Summit 2019
<a class="moz-txt-link-freetext" href="https://www.opensips.org/events/Summit-2019Amsterdam/">https://www.opensips.org/events/Summit-2019Amsterdam/</a>
</pre>
<div class="moz-cite-prefix">On 06/21/2019 06:26 PM, Bogdan-Andrei
Iancu wrote:<br>
</div>
<blockquote type="cite"
cite="mid:b68cea2e-85b0-a3ee-1209-67ca0b0be43d@opensips.org">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<tt>Woooow - we have a record here :) - resuming a discussion over
8 years !!!!!<br>
<br>
AFAIK, there was no intentional change (when comes to canceling
branches with no reply) - do you have a pcap + logs to show such
behavior ?<br>
<br>
And in regards to the sequence of CANCEL (on timeout) + forking,
I think this was fixed starting 1.7 - first the CANCEL is sent
out and then the new potential branches.<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="https://www.opensips-solutions.com" moz-do-not-send="true">https://www.opensips-solutions.com</a>
OpenSIPS Summit 2019
<a class="moz-txt-link-freetext" href="https://www.opensips.org/events/Summit-2019Amsterdam/" moz-do-not-send="true">https://www.opensips.org/events/Summit-2019Amsterdam/</a>
</pre>
<div class="moz-cite-prefix">On 06/20/2019 01:06 AM, Richard
Revels wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAE-NtRcDPbriippFnkbGs9G7rd+KfN3YomxLCuF45UH_JqSa9w@mail.gmail.com">
<div dir="ltr">I'm going to resurrect this as I've noticed that
opensips 2.4.6 sends CANCEL for branches it never got a
provisional response for. Was this changed intentionally?
<div><br>
</div>
<div>Also, it looks like the discussion I am responding on was
about opensips 1.5 but if any testing is needed around
fail-over scenarios I expect to be doing some of that over
the next few days. Just let me know what still needs to be
looked at and I'll try to get it in.</div>
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style="font-size:12.8px">System Architect II</span></p>
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style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">900 Main Campus Drive, Suite 100, Raleigh, NC 27606</span></p>
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<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Apr 5, 2011 at 3:33
PM Bogdan-Andrei Iancu <<a
href="mailto:bogdan@opensips.org" moz-do-not-send="true">bogdan@opensips.org</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">Hi guys,<br>
<br>
Actually it will be great to have that patch tested to know
for sure if <br>
the problem is solved. I never got a 100% confirmation from
Andrew, but <br>
maybe Piotr can test and confirm.<br>
<br>
Thanks and regards,<br>
Bogdan<br>
<br>
On 04/05/2011 04:58 PM, Andrew Pogrebennyk wrote:<br>
> Hi Piotr,<br>
> This sounds familiar to the problem I experienced some
time ago - make <br>
> sure to check comments here: <br>
> <a
href="https://sourceforge.net/tracker/?func=detail&atid=1086410&aid=2940556&group_id=232389"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://sourceforge.net/tracker/?func=detail&atid=1086410&aid=2940556&group_id=232389</a><br>
><br>
> I haven't been able to replicate that setup to confirm
that the <br>
> attached patch works. You are welcome to try it though
:) Note RFC <br>
> states it clearly that if no response has been received
from the UAS <br>
> at all, we should not attempt to send a CANCEL there.<br>
><br>
> But it seems that in your case you received some
provisional response <br>
> so the issue has to do with the order in which CANCEL
is fired - <br>
> exactly what the patch is intended to fix.<br>
><br>
> On 05.04.2011 15:56, Piotr Sobolewski wrote:<br>
>> I'm having problem with specific gateway to which
OpenSIPS sends<br>
>> INVITE and then another INVITE (CallForward on no
Aswer).<br>
>> The problem is when after sending first INVITE to
gateway (without<br>
>> getting final response), OpenSIPS hits failure
route and then sends<br>
>> another INVITE (with different RURI) toward gateway
before CANCEL is<br>
>> sent, so the gateway responds to second INVITE with
"482 Request<br>
>> merged" (and gateway does not attempt to make
second connection).<br>
>> Is there a way to send CANCEL before sending second
INVITE ?<br>
><br>
<br>
<br>
-- <br>
Bogdan-Andrei Iancu<br>
OpenSIPS eBootcamp - 2nd of May 2011<br>
OpenSIPS solutions and "know-how"<br>
<br>
<br>
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