Subj : Re: Escape Sequences to initiate HTTP transfers
To   : deepthaw
From : deon
Date : Wed Nov 22 2023 09:54 am

  Re: Re: Escape Sequences to initiate HTTP transfers
  By: deepthaw to poindexter FORTRAN on Tue Nov 21 2023 11:30 am

 > The really weird part is that zmodem works about 90% of the time for
 > downloads, but consistently fails on uploads. Thankfully I've only been

So the "uploader" is the LAN, going to your serial modem thing?

This will be the fast network going to a slow network issue I'm guessing. zmodem doesnt handle the situation where one side is faster than the other. The sender finishes sending (but all the data is in a TCP buffer) and then starts its timer waiting for an ACK. When it doesnt get it, it things the connection is dead.

Meanwhile the receiver is unaware, and as it is slowly draining the TCP buffer...


....лоеп
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