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From: Felix Lee <flee@teleport.com>
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Subject: gnus over compressed nntp
Date: Tue, 28 Oct 1997 00:21:27 -0800
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this may improve life on the end of a ppp link..

after spending way too long writing a streaming gzip
(zlib-1.0.4 is a little quirky), I've settled on using
'ssh -C' instead.

basic idea is, instead of gnus connecting directly to
newshost:nntp, you have it run
    ssh -C proxyhost 'tcp newshost nntp'

or maybe
    ssh proxyhost 'tcp newshost nntp | zstream' | zstream -d

which would be worth it if zstream did better compression
than ssh -C.  (it does, but not really enough.)

though with zstream, you can use rsh if you don't have ssh.
but if you're hanging off ppp, rsh probably doesn't work for
you..  telnet is possible, but painful, and I don't really
want to do it.

anyway... 'ssh -C' is easy.  something like this should
work:

(setq gnus-select-method
      '(nntp "proxyhost"
	     (nntp-open-network-stream nntp-open-rlogin)
	     (nntp-rlogin-program "ssh")
	     (nntp-rlogin-parameters '("-x" "-C" "telnet" "-8" "newshost" "nntp"))))

now to figure out if the compression really helps or not...
--