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<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 <sr-users-bounces@lists.kamailio.org>
<b>On Behalf Of </b>R, Rajkumar (Raj)<br>
<b>Sent:</b> Friday, June 7, 2019 10:44 PM<br>
<b>To:</b> miconda@gmail.com; Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><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">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">sr-users@lists.kamailio.org</a>>; R, Rajkumar (Raj) <<a href="mailto:rajkumaradass@avaya.com">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">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=">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=">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=">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=">www.linkedin.com/in/miconda</a><o:p></o:p></pre>
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