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https://issues.apache.org/jira/browse/NET-440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201240#comment-13201240
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s commented on NET-440:
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That only works if known you the type of the server in advance. We use the
library to connect to a lot of different FTP servers where the type of server
is not known in advance. (And by server I mean devices in the field, with some
unknown OS and FTP server which can be up to 20 years old).
When it can not auto detect (for whatever reason), I'd say try some default
formatting. You can always fail afterwards when parsing does not succeed?
> library throws an exception in case the SYST command is not known or the
> result is not known by the implementation
> ------------------------------------------------------------------------------------------------------------------
>
> Key: NET-440
> URL: https://issues.apache.org/jira/browse/NET-440
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Affects Versions: 3.0.1
> Reporter: s
> Priority: Minor
>
> The FTP client uses the SYST command to determine the list output.
> This can fail in two ways:
> - a ParserInitializationException in case the response of the server is not
> known by apache.
> - When the response to SYST command is 502 command unknown (the command is
> optional after all - http://www.ietf.org/rfc/rfc959.txt) the client throws an
> IOException.
> Can't it just default to UNIX for these type of ftp servers?
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