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https://issues.apache.org/jira/browse/NET-572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb resolved NET-572.
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Resolution: Cannot Reproduce
If this is still occurring with 3.5 please re-open with a suitable test case
> Delay of around 5-6 seconds during SFTP Client file transfer using
> "storeFile" method of SFTP Client
> ----------------------------------------------------------------------------------------------------
>
> Key: NET-572
> URL: https://issues.apache.org/jira/browse/NET-572
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Affects Versions: 3.0.1
> Environment: Solaris 10
> Reporter: Sudipta Panda
>
> For transffering files over SFTP channel the below code snippet is being used
> -
> ---------------------------------------------------------------------------------------------
> File lLocalFile = new File(pLocalFilename);
> FileInputStream ip = new FileInputStream(lLocalFile);
> boolean lResult = ftp.storeFile(pRemoteFilename, ip);
> ip.close();
> ---------------------------------------------------------------------------------------------
> As per the code, The new SFTP channel is being established and then after
> around 2-3 mins, when trying to transfer a file from local to remote we can
> observed that the "storeFile" method is taking around 5-6 seconds to respond,
> and after that the lResult output is being received as "0" from the
> storeFile() method and the file transfer is getting failed.
> There is a timer for checking the FTP channels/FTP clients by "NOOP"
> operation command in every 1 second.
> But by closing and re-establishing the SFTP connection, then within a second
> the same file is getting transferred successfully. But again the same problem
> happened on the same connection after just 2-3 mins.
> There is another thread in the code part where from the same remote the code
> is reading and transferring file to local system by polling every 1 seconds
> successfully using SFTP connection. the code part for reading files -
> File lLocalFile = new File(pLocalFilename);
> FileOutputStream op = null;
> try {
> op = new FileOutputStream(lLocalFile);
> return ftp.retrieveFile(pRemoteFilename, op);
> } finally {
> if (op != null) {
> op.close();
> }
> }
> Please can you help us to identify what is the problem for the SFTP
> connection that not allowing the File to be transferred from Local to Remote
> and the storefile method takes 5-6 seconds to responding. But just
> establishing the new connection, the file transferred but again the same
> problem happens for the same channel connection.
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