home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Columbia Kermit
/
kermit.zip
/
newsgroups
/
misc.19970326-19970626
/
000172_news@newsmaster….columbia.edu _Tue May 6 18:11:25 1997.msg
< prev
next >
Wrap
Internet Message Format
|
2020-01-01
|
3KB
Return-Path: <news@newsmaster.cc.columbia.edu>
Received: from newsmaster.cc.columbia.edu (newsmaster.cc.columbia.edu [128.59.35.30])
by watsun.cc.columbia.edu (8.8.5/8.8.5) with ESMTP id SAA21711
for <kermit.misc@watsun.cc.columbia.edu>; Tue, 6 May 1997 18:11:23 -0400 (EDT)
Received: (from news@localhost)
by newsmaster.cc.columbia.edu (8.8.5/8.8.5) id SAA04601
for kermit.misc@watsun; Tue, 6 May 1997 18:11:23 -0400 (EDT)
From: arthur@gateway.dircsa.org.au (Arthur Marsh)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: serial - network - serial connection
Date: 7 May 1997 07:35:39 +0930
Organization: DIRC - Disability Information & Resource Centre - Sth Australia
Lines: 37
Message-ID: <5ko9vj$32p@gateway.dircsa.org.au>
References: <5knrsl$7ml$1@apakabar.cc.columbia.edu>
NNTP-Posting-Host: apache.dircsa.org.au
X-Newsreader: TIN [version 1.1 PL8]
Path: news.columbia.edu!panix!news.mathworks.com!europa.clark.net!feed1.news.erols.com!news.ecn.uoknor.edu!munnari.OZ.AU!news.mel.connect.com.au!news.ade.connect.com.au!duster.adelaide.on.net!news.camtech.net.au!news.dircsa.org.au!news.dircsa.org.au!not-for-mail
Xref: news.columbia.edu comp.protocols.kermit.misc:6996
Frank da Cruz (fdc@watsun.cc.columbia.edu) wrote:
: : This appears to generally work, allowing 8-bit transparent connections with
: : adequate flow control, but I'm open to suggestions on improving it.
: :
: You don't say what you meant by "improving it" -- I assume the transparency
: issues have all been addressed satisfactorily; it looks like you've covered
: most of the bases described in "Using C-Kermit" 2nd Edition, pages 162-165
: ("C-Kermit in the Middle").
I had a bit more of a look, installed some newer Stallion drivers, then noticed
that two of our null modem adapters were a cross between the two types on
page 494 of Using C-Kermit 2nd Edition (recently purchased from the Technical
Book Shop, 295 Swanston St Melbourne Vic (-:). DTR correctly went to DSR and
DCD on the opposite side, but RTS and CTS were faked locally. I have since
replaced them with some true hardware handshaking null modem adapters.
: In earlier releases of C-Kermit, end-to-end performance through this kind of
: connection was pretty awful. A lot of work has gone into speeding it up.
: Thus, for example, C-Kermit, when in CONNECT mode, no longer *assumes* that
: input is coming from the (slow) keyboard, but instead uses all sorts of
: buffering techniques and trickery to make this kind of connection as fast as
: possible -- within the limitations of its portable architecture. Still,
: you're going to see some overhead that you would not see if you had a direct
: connection, especially during file transfer.
: - Frank
Well, it is getting very close to achieving the goal of being an 8-bit transparent
pipe that can be used to haul Fidonet traffic.
Thanks again for the great work with Kermit itself and the second edition of the
book!
--
Arthur Marsh, telephone +61-8-8370-2365, fax +61-8-8223-5082
arthur@dircsa.org.au
.endofsig