Re: Error Recovery in FTP

In ANSI x.12 EDI there are hash or control totals built in and some optional 
ones.  Perhaps we need to 
follow this concept in datafiles that we transmit using FTP.





LiuKeanKeong@hlbb.hongleong.com.my on 03/18/99 12:24:33 AM
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Subject:        Error Recovery in FTP

I read from the FTP Specification RFC 959 that there is 'no provision
for detecting bits lost or scrambled in data transfer'. A restart
procedure is provided to retransmit but controlled at user application
level. (compared to SNA which handles it for us at a lower level?)

Does this mean that there is a remote chance that a FTPed file may have
bits that are in error? In which case we would need to program in a
checksum feature into our FTP file transfer programs? I mean, for
critical data files.  not for bitmap, jpg or wav files which are
tolerent of bit errors!  :-)

any comments welcomed. thanks.

kk liu.
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