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From "Christian Migowski" <chrismf...@gmail.com>
Subject Re: NioSocketAcceptor - Too many open files
Date Wed, 30 Jul 2008 08:09:07 GMT

2008/7/30, Tom Wieczorek <tw@btnet.de>:
> Hi Niklas,
> only one single client is on the same box, all other clients, especially
> the ones connecting to the http service, are running on different machines.
> I am definitely not sure that all clients close their sockets correctly, but
> this shouldn't be a problem on the server side, if the server closes the
> session?

It shouldn't. If you look at the tcp state diagram*, you'll see that
CLOSE_WAIT means that your application needs to send the final FIN. So it is
ftpserver/mina or some issue in java tcp socket implementation itself.


* http://www.vs.inf.ethz.ch/edu/WS0102/VS/TCP-State-Diagram.html

> Tom.
> ----- Original Message ----- From: "Niklas Gustavsson" <
> niklas@protocol7.com>
> To: <users@mina.apache.org>
> Sent: Tuesday, July 29, 2008 7:27 PM
> Subject: Re: NioSocketAcceptor - Too many open files
>  On Tue, Jul 29, 2008 at 6:45 PM, Tom Wieczorek <tw@btnet.de> wrote:
>>> Hi Niklas,
>>> I followed the instructions found in the FAQ, although I think that this
>>> is
>>> not the root of the problem. The FAQ says something about TIME_WAIT, not
>>> CLOSE_WAIT. I don't know if these two are the same. Another thing that
>>> makes
>>> me think this is not a timeout problem is the effect that the connections
>>> listed in CLOSE_WAIT state remain in this state forever, not just for a
>>> couple of minutes.
>> My bad, I didn't read you initial email careful enough. In your
>> environment, are you client on the same box as the server? Are you
>> sure that the client closes it's socket?
>> /niklas

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