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https://issues.apache.org/jira/browse/DIRMINA-884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emmanuel Lecharny closed DIRMINA-884.
-------------------------------------
Resolution: Cannot Reproduce
Unless we get some code that demonstrate the issue, it's extremely difficult to
find what is the problem.
> Apache Mina byte buffer shrink affecting badly
> ----------------------------------------------
>
> Key: DIRMINA-884
> URL: https://issues.apache.org/jira/browse/DIRMINA-884
> Project: MINA
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0.2
> Environment: Linux, Cent OS
> Reporter: Kasun Dilunika
> Priority: Critical
>
> I have developed server application to process charging messages which are
> coming in a
> binary format. In this application I have used mina core libraries to develop
> the server
> following the state machine pattern.
> In my scenario, when client initiated a connection for the first time, it is
> not closed.
> Client maintains the connection with server by sending some echo messages
> periodically.
> This echo message is 24 bytes in size.When a message hits server first time,
> it always
> allocates a byte buffer with 30000 bytes and read the content in to the byte
> buffer.
> Every 30 seconds echo message comes to the server. Mina framework watches
> this behavior
> and starts to reduce the buffer in to a half. [30000 -> 15000 -> 7500 -> 3750
> ??-> 58].
> And it remains in the size 58 as the incoming message is 24 bytes long.
> But the problem is starting when the actual message is received, which is 704
> bytes
> long. As the server buffer is allocated only to 58 bytes, it only reads first
> 58 bytes
> from the message. After that only framework realize that this buffer is not
> enough and
> starting to double the byte buffer. But the time is too late to react,
> because decoder
> state machine reject the message as it is not tallying with the size stated
> in its
> header.
> So, is there a way to stop this optimization to this message, because I can?t
> go with
> this logic when it is considered the logic I am having?
> If there is a configuration to stop this please let me know, otherwise tell
> me where
> should I modify the source code in order to stop this optimization.
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