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Hi, Rodrigo!<br>
<br>
Could you send me the system logs related to the BYE processing?<br>
<br>
Best regards,<br>
<pre class="moz-signature" cols="72">Răzvan Crainea
OpenSIPS Solutions
<a class="moz-txt-link-abbreviated" href="http://www.opensips-solutions.com">www.opensips-solutions.com</a></pre>
<div class="moz-cite-prefix">On 10/27/2016 10:09 PM, Rodrigo Pimenta
Carvalho wrote:<br>
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<p>Hi Razvan,</p>
<p>Thank you very much again!</p>
<p>See my comments and question in line, please.</p>
<p>Best regards!<br>
</p>
<p><br>
</p>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
color="#000000" face="Calibri, sans-serif"><b>De:</b>
<a class="moz-txt-link-abbreviated" href="mailto:users-bounces@lists.opensips.org">users-bounces@lists.opensips.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:users-bounces@lists.opensips.org"><users-bounces@lists.opensips.org></a> em nome de Răzvan
Crainea <a class="moz-txt-link-rfc2396E" href="mailto:razvan@opensips.org"><razvan@opensips.org></a><br>
<b>Enviado:</b> quinta-feira, 27 de outubro de 2016 05:58<br>
<b>Para:</b> <a class="moz-txt-link-abbreviated" href="mailto:users@lists.opensips.org">users@lists.opensips.org</a><br>
<b>Assunto:</b> Re: [OpenSIPS-Users] OpenSIPS reopen TCP
connectios and sends INVITE, but not BYE. How to change
it?</font>
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<div><tt>Hi, Rodrigo!<br>
<br>
Having OpenSIPS opening TCP connections towards client is
a bit dangerous, especially if the clients are behind NAT.
That's because most likely you will not be able to reach
them, and opensips will get stuck trying to connect (until
it triggers a timeout). That's why the best way to go is
to try to keep the connection (ideally opened by the
client at REGISTER) as much as possible. This is usually
done by pinging (as discussed in a previous email). So my
suggestion is to try to avoid opening new TCP connections
with clients, unless you really know they will always be
reachable.<br>
<br>
<br>
<font color="black" size="3"
face="Calibri,Arial,Helvetica,sans-serif"><span
style="font-size:12pt;" id="divtagdefaultwrapper"><font
face="Courier New"><span style="color: rgb(0, 111,
201);"> The client will be always reachable.
Because in my specific case, the client(which <tt><font
color="black"><font face="Courier New"><span
style="color: rgb(0, 111, 201);"><tt><font
color="black"><span style="color:
rgb(0, 111, 201);">break</span></font></tt></span></font></font></tt>
down the TCP connection) is in the same hardware
as OpenSIPS. So, there will not be NATs here. </span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"></span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"> As I saw
in the log, OpenSIPS reopen the connection, like
this:</span></font><font face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"></span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"> </span></font><font
face="Courier New"><span style="color: rgb(0, 111,
201);">DBG:core:proto_tcp_send: no open tcp
connection found, opening new one, async = 1</span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"></span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"> And this
is opened in the moment after OpenSIPS trying to
pass the SIP BYE to the local client.</span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"> As long
as OpenSIPS is already reopening the TCP
connection, when it needs to send the SIP BYE, why
the SIP BYE is not sent finally?</span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"></span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"> I
believe that I can use such new connection to send
the SIP BYE. In this case, I intend to force
OpenSIPS to send the SIP BYE after reopening such
TCP connection. Is it possible in terms of script?</span></font><font
face="Courier New"><br>
<span style="color: rgb(0, 111, 201);"> I have
just checked my script and I'm not using the flag
</span></font><font face="Courier New"><span
style="color: rgb(0, 111, 201);">tcp_no_new_conn_bflag</span></font><font
face="Courier New"><span style="color: rgb(0, 111,
201);">.</span></font><font face="Courier New"><br>
</font></span></font><br>
<br>
The behavior you are describing (INVITE vs BYE handling),
might be related to the fact that you are setting the
tcp_no_new_conn_bflag[1] flag for BYE messages, but not
for INVITEs. Is this correct? If not, do you see any
errors in the script?<br>
<br>
[1] <a moz-do-not-send="true" previewremoved="true"
id="LPlnk433216" class="moz-txt-link-freetext"
href="http://www.opensips.org/Documentation/Script-CoreParameters-2-2#toc101">http://www.opensips.org/Documentation/Script-CoreParameters-2-2#toc101</a><br>
</tt>
<pre class="moz-signature" cols="72">Răzvan Crainea
OpenSIPS Solutions
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<div class="moz-cite-prefix">On 10/26/2016 10:59 PM, Rodrigo
Pimenta Carvalho wrote:<br>
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<p>Hi.</p>
<p><br>
</p>
<p>After some log debug I have observed the following
behavior in the OpenSISP (2.2.1):</p>
<p><br>
</p>
<p>When OpenSIPS has to send a SIP INVITE to a peer
through a TCP connection that was closed before by
some way, OpenSIPS open a new one and then sends the
SIP message to the peer successfully.</p>
<p><br>
</p>
<p>However, <span>when OpenSIPS has to send a SIP BYE
to a peer through a TCP connection that was closed
before, OpenSIPS open a new one, but doesn't send
the SIP BYE. In this case SIP BYE is discarded.</span></p>
<p><span><br>
</span></p>
<p><span>How to change the behavior of OpenSIPS to make
it to send the SIP BYE is such case?</span></p>
<p><span><br>
</span></p>
<p><span>I'm looking for ways of fix or workaround of a
TCP tear down connection that happens during
dialogs.<br>
</span></p>
<p><span><br>
</span></p>
<p><span>Any hint will be very helpful!<br>
</span></p>
<p><br>
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