i am looking for a file-transfer program (for linux), which can run one
upload and one download simultaneously, on a _single_ TCP connection (sort
of the TCP equivalent of the BModem protocol used on BBS-es years ago).

i assume this will need to be a client+server application (since standard
file transfer protocols such as ftp are not 'full-duplex' in this sense).

- it needs to run on the command-line (i.e. NOT an X/svgalib based
  application).

- it needs to show the temporary transfer rate as transfer progresses,
  seperately for each direction (upload/download).

is there such a thing in existence? searching for 'file transfer' +
'bidirectional' on freshmeat/google gives nothing. using 'full duplex'
gives a lot of info about full-duplex ethernet NICS and switches.

by the way, you might ask "what's wrong with using two seperate TCP
connections - one for upload and one for download?". think of a slow link,
where a mass download in one direction slows down the ACKs for the upload,
and vice versa, giving an overall poor performance. (and i don't
want/can't get into playing with linux's priority queues for this).

thanks,
-- 
guy

"For world domination - press 1,
 or dial 0, and please hold, for the creator." -- nob o. dy


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