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List:       mina-dev
Subject:    Re: How to detect the client disconnection
From:       "James Im" <im-james () hotmail ! com>
Date:       2007-02-26 7:30:13
Message-ID: BAY7-F1431D7434B97A6CFF9A3B96830 () phx ! gbl
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>>3) I am just newbie about the newworking programming. So can you point out
>>the way to measure CPU time for  the I/O wait? What you said if my server
>>side bandwidth is small, the situation I discribe could happen?
>
>If you write faster than what your network can acceptor, MINA will store
>your write requests in an internal queue.  If there are too many queued
>requests, you will get OutOfMemoryError.  You need to control the write
>throughput by yourself using methods such as
>IoSession.getQueuedWriteReqeusts().

it would be nice if the framework could provide a solution for this.

>>4) How can I prevent the client open millions of socket connection to my
>>server and try to crash my server?
>
>First, you need to be able to detect if the server is overloaded.  Once
>detected, you can close any incoming connection or limit the number of
>incoming messages by controlling the traffic of each session.

Doesn't a solution already  exists for this?

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