• Subject: RE: Error Recovery in FTP
  • From: Tim McCarthy <TimM@xxxxxxxxxxxxxxxxxx>
  • Date: Thu, 18 Mar 1999 11:22:44 -0500

FTP doesn't handle lost or garbaged data because the lower transport
layer - TCP handles it. TCP segments are checksum protected. 

> -----Original Message-----
> From: Rob Berendt [SMTP:rob@dekko.com]
> Sent: Thursday, March 18, 1999 8:25 AM
> To:   MIDRANGE-L@midrange.com
> Subject:      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
> Please respond to MIDRANGE-L@midrange.com@Internet
> To:   MIDRANGE-L@midrange.com@Internet
> cc:    
> 
> 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.
> +---
> | This is the Midrange System Mailing List!
> | To submit a new message, send your mail to MIDRANGE-L@midrange.com.
> | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
> | To unsubscribe from this list send email to
> MIDRANGE-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator:
> david@midrange.com
> +---
> 
> 
> +---
> | This is the Midrange System Mailing List!
> | To submit a new message, send your mail to MIDRANGE-L@midrange.com.
> | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
> | To unsubscribe from this list send email to
> MIDRANGE-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator:
> david@midrange.com
> +---
+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---


This thread ...


Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2020 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].