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https://issues.apache.org/jira/browse/NET-319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb updated NET-319:
---------------------
Priority: Major (was: Critical)
Not critical because there is a work-round
> Problem with private OutputStream __storeFileStream(int command, String
> remote) in org.apache.commons.net.ftp.FTPClient
> ------------------------------------------------------------------------------------------------------------------------
>
> Key: NET-319
> URL: https://issues.apache.org/jira/browse/NET-319
> Project: Commons Net
> Issue Type: Improvement
> Environment: Used a standalone to connect to Mainframes z/os system,
> later the code will be moved to unix box as part of web-project
> Reporter: Swami Nandan
>
> private OutputStream __storeFileStream(int command, String remote)
> throws IOException
> {
> Socket socket;
> if((socket = _openDataConnection_(command, remote)) == null)
> return null;
> OutputStream output = socket.getOutputStream();
> if(__fileType == 0)
> {
> output = new BufferedOutputStream(output, 1024);
> output = new ToNetASCIIOutputStream(output);
> }
> return new SocketOutputStream(socket, output);
> }
> This method in FTPClient.java is called by the method storeFileStream(String
> str). At line number 6 in the above mentioned method, it returns null when
> unable to open DataConnection which could be because of concurrent file
> access issues. In such cases instead of returning null, this method should
> throw an IOException like:
> Socket socket;
> if((socket = _openDataConnection_(command, remote)) == null) throw
> new IOException;
> As of now in my code i have used a null check to avoid this. However i could
> not understand why an outputstream creation method will return a null
> reference and not throw an IOException. It was hard to believe that I was
> getting null pointer exception while getting an output stream reference.
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