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From "Tomas Mysik (JIRA)" <j...@apache.org>
Subject [jira] [Created] (NET-419) Not possible to call FTPClient.abort() method correctly
Date Thu, 11 Aug 2011 11:27:27 GMT
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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