FTP PASV RETR # Server-side REPLY RETR 550 the file doesn't exist REPLY SIZE 550 Can't check for file existence # Client-side ftp lib533 FTP RETR a non-existing file twice using the multi interface ftp://%HOSTIP:%FTPPORT/path/533 ftp://%HOSTIP:%FTPPORT/path/533 # Verify data after the test has been "shot" USER anonymous PASS ftp@example.com PWD CWD path EPSV TYPE I SIZE 533 RETR 533 EPSV SIZE 533 RETR 533 QUIT