If you haven't already, you can try the following to disable any port
buffering within Racket, but that doesn't help you if the OS (Windows
and Posix-ish console stuff it's doing from the console window) isn't
giving Racket raw, unbuffered access to keyboard input through stdin:
(file-stream-buffer-mode my-port 'none)
If you were using almost anything other than Windows, you could just use
"http://www.neilvandyke.org/racket-charterm/";.
Other than that, you or someone could make a portable Racket
text-terminal package that does stuff like uses the console API on
Windows and tty on almost everything else.
BTW, you mention getting random bytes with variations on "read-bytes".
That simply shouldn't happen with "read-bytes", but, when using
variations on "read-bytes-avail!", only the first N count bytes it says
it read will be valid in the bytestring.
Neil V.
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