#4 Unknown commands handling

[André Schild]

Hello,

I found a small problem with (for example) MAC clients.

When a client sends a unrecognized command, the FTP
server just ignores it and the client waits forever for
a response.

The normal behaviour of FTP servers is to send a "500
xy command not understood"

So I have added the lines below to the end of the parse
method of the FTPParse class:

parent.output("500 "+ftpCommand+" Command not understood");
return;