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<p>Hello,</p>
<p>I didn't get the time to look at. It was a long weekend in
Germany, with Monday being public holiday. Not sure if I get to it
today, but hope to get time in the next few days.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 11.06.19 07:56, R, Rajkumar (Raj)
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span style="color:windowtext">Did the
shared tcp stats help? Awaiting your inputs on this.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:windowtext">thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">raj<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> sr-users
<a class="moz-txt-link-rfc2396E" href="mailto:sr-users-bounces@lists.kamailio.org"><sr-users-bounces@lists.kamailio.org></a>
<b>On Behalf Of </b>R, Rajkumar (Raj)<br>
<b>Sent:</b> Friday, June 7, 2019 10:44 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:miconda@gmail.com">miconda@gmail.com</a>; Kamailio (SER) - Users
Mailing List <a class="moz-txt-link-rfc2396E" href="mailto:sr-users@lists.kamailio.org"><sr-users@lists.kamailio.org></a><br>
<b>Subject:</b> Re: [SR-Users] TCP reset behavior<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:windowtext">Hi Daniel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Please find
attached stats output captured every 2 seconds for the
entire duration of test (i.e., Start of registration from
client till the connection towards client is reset by
kamailio after 17mins approximately). I had used ‘kamcmd’
instead of ‘kamctl’ for same command arguments.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Setup:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">10.27.117.55
(Client) --- Kamailio (10.1.4.55) ---- Backend server
(10.2.8.70)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Summary of
events executed/observed during the test:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph"
style="color:windowtext;margin-left:0in;mso-list:l0 level1
lfo3">
Once the client is registered successfully to the backend,
turned off WiFi connection at the client side (time 13:07.05
UTC 2019).
<o:p></o:p></li>
<li class="MsoListParagraph"
style="color:windowtext;margin-left:0in;mso-list:l0 level1
lfo3">
After OPTIONS msg time out for response from the client,
backend closes the TCP connection towards kamailio ( around
time 13:10:39),<o:p></o:p></li>
<li class="MsoListParagraph"
style="color:windowtext;margin-left:0in;mso-list:l0 level1
lfo3">
TCP connection towards client side is reset at 13:24:30
(i.e., 17 minutes since the WiFi is turned off)<o:p></o:p></li>
<li class="MsoListParagraph"
style="color:windowtext;margin-left:0in;mso-list:l0 level1
lfo3">
In wireshark, see re-transmission of a TCP packet from
kamailio for about 15 minutes until connection release.<o:p></o:p></li>
</ul>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:windowtext">thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">raj<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> Daniel-Constantin Mierla <<a
href="mailto:miconda@gmail.com" moz-do-not-send="true">miconda@gmail.com</a>>
<br>
<b>Sent:</b> Friday, June 7, 2019 6:14 PM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <<a
href="mailto:sr-users@lists.kamailio.org"
moz-do-not-send="true">sr-users@lists.kamailio.org</a>>;
R, Rajkumar (Raj) <<a
href="mailto:rajkumaradass@avaya.com"
moz-do-not-send="true">rajkumaradass@avaya.com</a>><br>
<b>Subject:</b> Re: [SR-Users] TCP reset behavior<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Hello,<o:p></o:p></p>
<p>can you reproduce the case and then get the output of the
next commands:<o:p></o:p></p>
<p>kamctl rpc core.tcp_list<o:p></o:p></p>
<p>kamctl rpc core.tcp_options<o:p></o:p></p>
<p>kamctl rpc core.tcp_info<o:p></o:p></p>
<p>Cheers,<br>
Daniel<o:p></o:p></p>
<div>
<p class="MsoNormal">On 06.06.19 18:53, R, Rajkumar (Raj)
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">In our setup running kamailio (alpine
image) in stateless mode and have following TCP config set.
After client registers to the backend see two TCP
connections created – one towards the client and the other
towards the backendserver. If there’s a abrupt network
disconnect either at the client side or at the backend side,
do not see TCP reset happening from kamailio as per the
config. Per below config expected after 120seconds( =
[tcp_keepidle] + ( [tcp_keepintvl * tcp_keepcnt] ) instead
it keeps resending TCP keepalive packets at varying
intervals for varying duration length(like 6mins, 14mins..)
before resetting the TCP connections. Also want to mention
that we are not using TCPOPS module here.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I am trying to achieve consistent
duration for TCP reset in kamailio. Could you please point
me if I have missed anything here?
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b><i>Setup:</i></b><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Client ---- Kamailio (stateless mode)
---- Backend server <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b>TCP Config:</b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:#C00000"> </span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:#C00000">tcp_connection_lifetime
= 3600</span></b><o:p></o:p></p>
<p class="MsoNormal">tcp_accept_aliases = no<o:p></o:p></p>
<p class="MsoNormal">tcp_async = yes<o:p></o:p></p>
<p class="MsoNormal">tcp_connect_timeout = 10<o:p></o:p></p>
<p class="MsoNormal">tcp_crlf_ping = yes<o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:#C00000">tcp_keepalive
= yes</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:#C00000">tcp_keepcnt
= 3</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:#C00000">tcp_keepidle
= 30</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:#C00000">tcp_keepintvl
= 30 # Total 2 mins - 30+(30*3)=120 sec</span></b><o:p></o:p></p>
<p class="MsoNormal">tcp_linger2 = 30<o:p></o:p></p>
<p class="MsoNormal">tcp_rd_buf_size = 65536<o:p></o:p></p>
<p class="MsoNormal">tcp_send_timeout = 10<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">thanks,<o:p></o:p></p>
<p class="MsoNormal">raj<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Kamailio (SER) - Users Mailing List<o:p></o:p></pre>
<pre><a href="mailto:sr-users@lists.kamailio.org" moz-do-not-send="true">sr-users@lists.kamailio.org</a><o:p></o:p></pre>
<pre><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.kamailio.org_cgi-2Dbin_mailman_listinfo_sr-2Dusers&d=DwMD-g&c=BFpWQw8bsuKpl1SgiZH64Q&r=LDE-f1bLxMPmcrsp8ONITcznNqEIlhe9ffKEZPeB7EI&m=m1fGDJFl23Vq-awSnjgML3TymzSQRBOSTCALAsyAHNM&s=lQLR6IfVOO2CWDL4iEDldpjFjZfxQFyfKeFd1pGZkoY&e=" moz-do-not-send="true">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></pre>
</blockquote>
<pre>-- <o:p></o:p></pre>
<pre>Daniel-Constantin Mierla -- <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.asipto.com&d=DwMD-g&c=BFpWQw8bsuKpl1SgiZH64Q&r=LDE-f1bLxMPmcrsp8ONITcznNqEIlhe9ffKEZPeB7EI&m=m1fGDJFl23Vq-awSnjgML3TymzSQRBOSTCALAsyAHNM&s=2-7juQBEXrjA_PjfpiIZ0JvAZxWKngyC0vcVyP1GmUs&e=" moz-do-not-send="true">www.asipto.com</a><o:p></o:p></pre>
<pre><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.twitter.com_miconda&d=DwMD-g&c=BFpWQw8bsuKpl1SgiZH64Q&r=LDE-f1bLxMPmcrsp8ONITcznNqEIlhe9ffKEZPeB7EI&m=m1fGDJFl23Vq-awSnjgML3TymzSQRBOSTCALAsyAHNM&s=_qINzlBw2yRKQ3ke2UwXsjTQ7lKWI25XpjOlzw9gPqA&e=" moz-do-not-send="true">www.twitter.com/miconda</a> -- <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_miconda&d=DwMD-g&c=BFpWQw8bsuKpl1SgiZH64Q&r=LDE-f1bLxMPmcrsp8ONITcznNqEIlhe9ffKEZPeB7EI&m=m1fGDJFl23Vq-awSnjgML3TymzSQRBOSTCALAsyAHNM&s=TsFAXfvNfu1k1Kw-F4937svidQSEfPMgK4VmorRPn54&e=" moz-do-not-send="true">www.linkedin.com/in/miconda</a><o:p></o:p></pre>
</div>
</blockquote>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a></pre>
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