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https://issues.apache.org/jira/browse/NET-419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098827#comment-13098827
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Tomas Mysik commented on NET-419:
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Thanks a lot for the analysis; frankly, I do not understand everything but if
there is a solution which is not perfect but which would work in most cases, I
would give it a try. But the final decision is up to you, of course.
Thanks again.
> Not possible to call FTPClient.abort() method correctly
> -------------------------------------------------------
>
> Key: NET-419
> URL: https://issues.apache.org/jira/browse/NET-419
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Affects Versions: 3.0
> Environment: java version "1.6.0_26"
> Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
> Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)
> Linux cattie 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011
> x86_64 x86_64 x86_64 GNU/Linux
> Reporter: Tomas Mysik
>
> Unfortunately, it seems that there are difficulties of using FTPClient.abort()
> method [1][2]. Also, it is really not clear how the abort() method should be
> called/used at all - if from another thread (as I would expect) then there is
> a problem with
> thread-safety: FTPClient itself is not thread-safe so it means that some
> custom lock/monitor must be used; but this lock will prevent calling abort()
> on
> the FTPClient while it is downloading/uploading file since file
> upload/download
> itself is blocking...
> If I'm wrong and the abort() method works then an example in Javadoc would be
> more than welcome.
> Thanks a lot.
> [1]
> http://apache-commons.680414.n4.nabble.com/Net-FTPClient-abort-problem-td739542.html
> [2] http://www.tikalk.com/java/forums/apache-ftp-client-abort-transfer
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