[jira] Commented: (FTPSERVER-116) OutOfMemoryError when clients disconnect without issuing a QUIT command.

["Niklas Gustavsson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FTPSERVER-116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12544060 ] 

Niklas Gustavsson commented on FTPSERVER-116:
---------------------------------------------

Is this using the MINA or IO listener?

> OutOfMemoryError when clients disconnect without issuing a QUIT command.
> ------------------------------------------------------------------------
>
>                 Key: FTPSERVER-116
>                 URL: https://issues.apache.org/jira/browse/FTPSERVER-116
>             Project: FtpServer
>          Issue Type: Bug
>          Components: Core
>            Reporter: Magnus Lind
>
> I have done some memory profiling regarding this problem:
> The class org.apache.ftpserver.listener.ConnectionManagerImpl stores all connections it ceates in its conList member variable.
> Normally the connection is removed from conList when it is closed. However, this is only the case if the client issues a QUIT command before closing the connection.
> Connections for clients that don't issue a QUIT command before disconnecting are left in the conList variable and never removed.
> As far as I understand, It should be ok to disconnect without issuing a QUIT command.
> When enough connections are left in the conList variable the jvm runs out of memory.

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