On Wed, Aug 5, 2015 at 4:15 PM, Mark P. Fishman <
mfis...@alum.mit.edu> wrote:
> Kermit? I believe it's still available, and runs on Linux and MS-DOS.
IIRC, yes, and yes. But I used Kermit long ago, and while it was
available for just about everything, performance was nothing to write
home about. If the choice for me was Zmodem or Kermit, Zmodem won
handily. It used a larger default packet size, and took a "No news is
good news" approach. Protocols like Xmodem and Ymodem expected an
acknowledgement of successful receipt after each packet. Zmodem
simply sent, and didn't do anything unless the other side sent a
response that meant "That list bit was garbled. Send it again?"
IIRC, Zmodem also used CRCs to check successful transmission rather
than checksums that were vulnerable to transposition errors.
______
Dennis