The last SocketStreamFix.cs fixs some problems (POP3Client works very well) and I 
have understand that FTPClient needs now a directory '/' to work. Why this change ? 
Before, at the time of FTPSocket, the declaration directory: '' was sufficient.
But, but, but  I have always a problem with SMTPClient;  SMTPClient example did not 
work and answer a ConnectionTimeOut: 0.0.0.0.
Please another streamfix, please.