Background File Transfer Program
The Background File Transfer Program ( BFTP ) is a protocol for transferring files over TCP / IP networks in the background using FTP . BFTP is located in the application layer of the TCP / IP protocol stack . It is used to transfer files in the background.
It is defined in RFC 1068 . As will be further explained there, this protocol serves to stimulate the discussion about further transmission paths for files over the Internet. The HTTP and FTP standards common at the time required constant interaction with the user. Due to the increasing load on the network ( congestion ) in the mid-1980s, however, file transfers could break off. Using BFTP , however, a user could order large transfers, the execution of which was ensured automatically and did not require constant intervention.
Extract commands
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Example of a BFTP session
Received-Date: Tue, 6 Oct 87 10:15:52 PDT Date: Tue, 6 Oct 87 10:15:47 PDT From: root (Operator) Posted-Date: Tue, 6 Oct 87 10:15:47 PDT To: deschon Subject: BFTP Results: bftp560538880 Request bftp560538880 submitted to run at 10:14 Oct 6. Tue Oct 6 10:15:22 1987: starting… Request type: COPY Source: deschon.isi.edu-deschon-XXX--21-./-foo* Destination: venera.isi.edu-deschon-XXX--21-./temp/- Stru: F, Mode: S, Type: A N, Creation: STOR Multiple matching: TRUE Return mailbox: 'deschon@isi.edu', Password: SET Remaining tries: 5, Retry interval: 60 minutes Connect to: deschon.isi.edu, 21 deschon.isi.edu ==> 220 deschon.isi.edu FTP server (Version 4.7 Sun Sep 14 12:44:57 PDT 1986) ready. Connect to: venera.isi.edu, 21 venera.isi.edu ==> 220 venera.isi.edu FTP server (Version 4.107 Thu Mar 19 20:54:37 PST 1987) ready. deschon.isi.edu <== USER deschon deschon.isi.edu ==> 331 Password required for deschon. deschon.isi.edu <== PASS XXX deschon.isi.edu ==> 230 User deschon logged in. venera.isi.edu <== USER deschon venera.isi.edu ==> 331 Password required for deschon. venera.isi.edu <== PASS XXX venera.isi.edu ==> 230 User deschon logged in. deschon.isi.edu <== CWD ./ deschon.isi.edu ==> 200 CWD command okay. venera.isi.edu <== CWD ./temp/ venera.isi.edu ==> 250 CWD command successful. deschon.isi.edu <== PORT 128,9,1,56,4,106 deschon.isi.edu ==> 200 PORT command okay. deschon.isi.edu <== NLST foo* deschon.isi.edu ==> 150 Opening data connection for /bin/ls (128.9.1.56,1130) (0 bytes). deschon.isi.edu ==> 226 Transfer complete. deschon.isi.edu <== PASV deschon.isi.edu ==> 502 PASV command not implemented. venera.isi.edu <== PASV venera.isi.edu ==> 227 Entering Passive Mode (128,9,0,32,6,200) deschon.isi.edu <== PORT 128,9,0,32,6,200 deschon.isi.edu ==> 200 PORT command okay. deschon.isi.edu <== RETR foo venera.isi.edu <== STOR foo deschon.isi.edu ==> 150 Opening data connection for foo (128.9.0.32,1736) (0 bytes). deschon.isi.edu ==> 226 Transfer complete. venera.isi.edu ==> 150 Opening data connection for foo (128.9.1.56,20). venera.isi.edu ==> 226 Transfer complete. venera.isi.edu <== PASV venera.isi.edu ==> 227 Entering Passive Mode (128,9,0,32,6,201) deschon.isi.edu <== PORT 128,9,0,32,6,201 deschon.isi.edu ==> 200 PORT command okay. deschon.isi.edu <== RETR foo1 venera.isi.edu <== STOR foo1 deschon.isi.edu ==> 150 Opening data connection for foo1 (128.9.0.32,1737) (4 bytes). deschon.isi.edu ==> 226 Transfer complete. venera.isi.edu ==> 150 Opening data connection for foo1 (128.9.1.56,20). venera.isi.edu ==> 226 Transfer complete. deschon.isi.edu <== QUIT venera.isi.edu <== QUIT Tue Oct 6 10:15:39 1987: completed successfully.
Web links
Individual evidence
- ^ BFTP, Background File Transfer Program. Retrieved September 25, 2018 .
- ↑ RFC 1068 - Background File Transfer Program (BFTP). (English, August 1988, tools.ietf.org PDF).