RFC 354 (rfc354) - Page 2 of 25
File Transfer Protocol
Alternative Format: Original Text Document
The File Transfer Protocol July 8, 1972
11.A. Terminology
ASCII The USASCII character set as defined in NIC
#7104. In FTP, ASCII characters are defined
to be the lower half of an eight bit code set
(i.e., the most significant bit es zero).
access controls Access controls define users' access
privileges to the use of a system, and to the
files in that system. Access controls are
necessary to prevent unauthorized or
accidental use of files. It is the
prerogative of a user-FTP process to provide
access controls.
byte size The byte size specified for the transfer of
data. The data connection is opened with
this byte size. Data connection byte size is
not necessarily the byte size in which data
is to be stored in a system, and may not be
related to the structure of data.
data connection A simplex connection over which data is
transferred, in a specified byte size, mode
and type. The data transferred may be a part
of a file, an entire file or a number of
files. The data connection may be in either
direction (server-to-user or user-to server).
data socket The socket on which a User-FTP process
"listens" for a data connection.
EOF The end-of-file conidition that defines the
end of a file being transferred.
EOR The end-of-record condition that defines the
end of a record being transferred.
error recovery A procedure that allows a user to recover
form certain errors such as failure of either
Host system or transfer process In FTP,
error recovery may involve restarting a file
transfer at a given checkpoint
FTP commands A set of commands that comprise the control
information flowing from the user-FTP to the
server-FTP process.