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I am facing a peculiar issue while trying to SFTP a file from Windows to Unix server. The error "stack trace" is -
4: Failure
at com.jcraft.jsch.ChannelSftp.throwStatusError(ChannelSftp.java:2846)
at com.jcraft.jsch.ChannelSftp.checkStatus(ChannelSftp.java:2459)
at com.jcraft.jsch.ChannelSftp._sendCLOSE(ChannelSftp.java:2465)
at com.jcraft.jsch.ChannelSftp._put(ChannelSftp.java:683)
at com.jcraft.jsch.ChannelSftp.put(ChannelSftp.java:475)
at com.jcraft.jsch.ChannelSftp.put(ChannelSftp.java:365)
I have searched a lot on other forums but could not get to the root cause. I have observed one more thing - the file name, I am trying to SFTP, is *.xml when I change it to *.XML the SFTP is "successful". Very weird could not identify the issue. I am trying this using JSch Java API. But I have seen the same issue while trying the WinSCP front end.
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Use the JSch library JSch is a Java implementation for the SSH2 protocol. It allows you to connect to an OpenSSH server through the sshd process and use secure file transferring. In addition, it also allows you to use port forwarding and X11 forwarding. JSch supports SSH File Transfer Protocol(version 0, 1, 2, 3).
It is common for OpenSSH SFTP server to return code 4 (Failure) for many different reasons, without giving any details.
You would have to check SFTP server log to find more.
Though the most usual cause is a lack of free disk or user quota space – Which can usually be identified by the file being created with zero size.
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