Yes it supposed to be handled by the tcp_keepalive itself (as I assumed). The weird thing was that we had this configuration:<br><br>Ubuntu Linux Server 2.6.15-26<br>tcp_keepalive_time 7200<br>tcp_keepalive_probes 9<br>tcp_keepalive_intvl 75<br>
<br>I have an XMPP client last sent a packet to the server at May 29 15:57:25 telling that it will enter an idle state. On May 30 approx 08:00:00 I shut down my PC which hosts my XMPP client thus causing a half-opened state. The next day (17:41:11) while checking the logs, its still in half-opened state and my server still thinks that I&#39;m online. It seems that tcp_keepalive kernel feature that&#39;s supposed to run every 2 hours didn&#39;t kick in.<br>
<br>---<br>Alvin Delagon<br><br><div class="gmail_quote">On Tue, Jun 3, 2008 at 2:42 PM, Gabriel Rossetti &lt;mailing_lists@evotex.ch&gt; wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d"><br>
Alvin Delagon wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
I just recently discovered that it&#39;s a TCP half-open socket scenario that can be remedied by monitoring client heartbeats. This is not twisted related issue. Thanks anyway. :)<br>
<br>
Alvin Delagon<br>
<br>
</blockquote>
<br></div>
Just a question, could setting the tcp keepalive feature on the server side (not sure if that is possible), would that make the server detect that the connection is dead/half-open?<br>
<br>
Gabriel<br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br><a href="http://www.alvinatorsplayground.blogspot.com/">http://www.alvinatorsplayground.blogspot.com/</a>