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https://issues.apache.org/jira/browse/FTPSERVER-461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15561420#comment-15561420
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Martin Wunderlich commented on FTPSERVER-461:
---------------------------------------------

Hi all, I am wondering, if this bug is still on the road map for one of the 
upcoming FTPServer releases? We have run into the same problem and had to 
downgrade MINA from 2.0.13 to 2.0.8. We could fix it by creating a patched 
local build of the lib, but I'd very much prefer, if this were fixed in the 
core project. 

> FtpServer implement inputClosed() or extend IoHandlerAdapter for MINA 2.0.8 
> or higher
> -------------------------------------------------------------------------------------
>
>                 Key: FTPSERVER-461
>                 URL: https://issues.apache.org/jira/browse/FTPSERVER-461
>             Project: FtpServer
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.0.6
>            Reporter: Ulrich Kohlhase
>
> According to the Apache MINA release notes for v2.0.8:
> "There is one change that might break the build for those switching from MINA 
> 2.0.7 to MINA 2.0.8 : the IoHandler interface now has a method called 
> inputClosed(), so either you have to implement this method if you are 
> directly implementing the IoHandler interface, or better, you can extends 
> IoHandlerAdapter, which implements a placeholder for this method."
> ERROR org.apache.ftpserver.impl.DefaultFtpHandler  - Exception caught, 
> closing session
> WARN  org.apache.ftpserver.listener.nio.FtpLoggingFilter  - EXCEPTION :
> AbstractMethodError: 
> org.apache.ftpserver.listener.nio.FtpHandlerAdapter.inputClosed(Lorg/apache/mina/core/session/IoSession;)V
>   at 
> org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.inputClosed(DefaultIoFilterChain.java:834)
>   at 
> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextInputClosed(DefaultIoFilterChain.java:611)
>   at 
> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:48)
>   at 
> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.inputClosed(DefaultIoFilterChain.java:938)
>   at 
> org.apache.mina.core.filterchain.IoFilterAdapter.inputClosed(IoFilterAdapter.java:137)



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