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https://issues.apache.org/jira/browse/NET-401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15888531#comment-15888531
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Chris Collins commented on NET-401:
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Currently running into an issue with the CRLFLineReader hanging up or reading
too far when processing a banner that has a mix of CR/LF and just LF in it from
a Cisco Ironport WSA appliance.
Sometimes the reader goes to far and picks up a null, and other times (with a
different banner config) it doesn't go far enough and hangs indefinitely.
Is there a RFC documented somewhere on line termination for FTP, and banners in
particular? I plan on opening an issue on this with supporting data, but just
wanted to start at the source.
> FTP class uses BufferedReader for control channel, which does not follow the
> standard
> -------------------------------------------------------------------------------------
>
> Key: NET-401
> URL: https://issues.apache.org/jira/browse/NET-401
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Affects Versions: 2.2
> Reporter: Sebb
> Fix For: 3.0
>
>
> The FTP class uses BufferedReader for wrapping the control channel, and uses
> its readLine() for getting responses from the server.
> The FTP protocol requires CRLF at the end of lines, but
> Bufferedreader#readLine() also allows bare CR and LF terminators, which could
> potentially be included in a server reply.
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