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https://issues.apache.org/jira/browse/DIRMINA-569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12588571#action_12588571
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Trustin Lee commented on DIRMINA-569:
-------------------------------------

It seems like BOTH_IDLE doesn't trigger WRITER_IDLE because KeepAliveFilter 
clears WRITER_IDLE status as you described.

> KeepAliveFilter's BOTH_IDLE is not working as expected
> ------------------------------------------------------
>
>                 Key: DIRMINA-569
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-569
>             Project: MINA
>          Issue Type: Bug
>          Components: Filter
>         Environment: MINA trunk (r647676)
>            Reporter: Jeff Mesnil
>         Attachments: DIRMINA-569.txt
>
>
> for my code, I need to send keep-alive messages when the client IoSession is 
> idle both in reading and writing.
> Using IdleStatus.BOTH_IDLE does not work as  I expected it:
> When the KeepAliveFilter is notified that it is BOTH_IDLE, it sends a 
> keep-alive request.
> However, sending this request means that the session is no longer WRITER_IDLE.
> In turn, this means that the filter is notified that the session is 
> READER_IDLE only.
> Since it is waiting a response (from the BOTH_IDLE notification) that has not 
> been received, it falsely handles it as a timeout.

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