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https://issues.apache.org/jira/browse/FTPSERVER-293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13786125#comment-13786125
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latino commented on FTPSERVER-293:
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what is the solution?
> Passive data connections can hang forever and thus block a port
> ---------------------------------------------------------------
>
> Key: FTPSERVER-293
> URL: https://issues.apache.org/jira/browse/FTPSERVER-293
> Project: FtpServer
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.0
> Reporter: Niklas Gustavsson
> Assignee: Niklas Gustavsson
> Fix For: 1.0.1, 1.1.0
>
>
> A socket used for a passive data connection can hang (for example due to a
> network error or client misbehavior) causing
> org.apache.ftpserver.impl.IODataConnection.transfer() never to return. This
> will therefore block that port forever, and in the long run hang the entire
> server.
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