[jira] Commented: (NET-258) Implement A Keepalive Mechanism

["Bogdan Drozdowski (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NET-258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001955#comment-13001955 ] 

Bogdan Drozdowski commented on NET-258:
---------------------------------------

Quite a change, I must say. If the timeouts are set correctly by the user, looks fine to me (should work; no obvious problems spotted). Nice work!

> Implement A Keepalive Mechanism
> -------------------------------
>
>                 Key: NET-258
>                 URL: https://issues.apache.org/jira/browse/NET-258
>             Project: Commons Net
>          Issue Type: Improvement
>          Components: FTP
>    Affects Versions: 2.0
>            Reporter: Rory Winston
>             Fix For: 3.0
>
>         Attachments: ftp-keepalive.diff
>
>
> For routers/firewalls that terminate idle connections, a separate heartbeat mechanism may need to be implemented to keep the control connection active.
> Some potential issues:
> * Synchronization between a heartbeat write and a __getReply() on an active control connection command;
> * Should use the NOOP command as a heartbeat signal;
> * Make the timeout configurable;
> * Default SocketImpl::setKeepAlive() wont do here.

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