Should FTPSClient set "PBSZ 0" and "PROT P" for FTPS connections
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                 Key: NET-293
                 URL: https://issues.apache.org/jira/browse/NET-293
             Project: Commons Net
          Issue Type: Improvement
    Affects Versions: 2.0
            Reporter: Sean Owen
            Priority: Minor


I don't know enough about the FTPS spec to know whether this is a bug or not -- 
somehow thinking not. But I spent some time debugging a connection to an FTPS 
server and in the end discovered that it would only work if the following 
commands were sent after login:

PBSZ 0
PROT P

Otherwise it would fail with "426 Transfer Aborted" after the file transfer 
began.

I note that another FTPS desktop client I have did specify these and succeeded, 
which is the only thing that prompted me to wonder whether this should be set 
by default by FTPSClient.

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