Newsgroups: comp.protocols.tcp-ip
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From: mah@wu-wien.ac.at (Michael Haberler)
Subject: Re: Is there such a thing as a uucp daemon?
Message-ID: <1991Jun14.105800.28984@swdsrv.edvz.univie.ac.at>
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References: <1991Jun9.030935.27196@mp.cs.niu.edu> <1991Jun10.154542.2992@chinacat.unicom.com> <1991Jun11.183342.23051@chinacat.unicom.com> <1991Jun12.075244.26984@wimsey.bc.ca>
Date: Fri, 14 Jun 1991 10:58:00 GMT

In article <1991Jun12.075244.26984@wimsey.bc.ca>, sl@wimsey.bc.ca (Stuart Lynne) writes:
|> In article <1991Jun11.183342.23051@chinacat.unicom.com> chip@chinacat.unicom.com (Chip Rosenthal) writes:
|> >In article <1991Jun10.154542.2992@chinacat.unicom.com> I wrote:
|> >>In article <1991Jun9.030935.27196@mp.cs.niu.edu>
|> >>	rickert@mp.cs.niu.edu (Neil Rickert) writes:
|> >>>You need a uucico which is built to first check if
|> >>>its stdin/stdout is a socket.
|
|> The problem now is that with SCO's uucico you can only use the "g" packet level
|> protocol. This is blessed with small packets (64 bytes data) and a small window size
|> (3, can be adb'd up to 7). The end result is truly amazing throughput :-) About 102
|> cps with windowsize of 3 and 170 with windowsize 7.


Some uucico's can use the 'f' protocol which is a royal cludge for 
X25 PAD connections, and in use on quites some sites on this side of the
pond. 'f' Protocol means: Escape all characters below space or above 127,
append a checksum, and do flow control via XON/XOFF. Ack's are only sent
after a whole file is done.

Now if you could coerce uucico running the 'f' proto over a TCP socket, 
througput should be much better. Unfortunately, few manufacturers have 
picked it up (HP for sure, dont know about others). Definitely not the
PC unix crowd.

|> I dream of a day when van-bc has all the networking facilities available on a Sun.

I just inquired ATT Unix Europe for BNU source alone, to do such things.
They wont sell it without SystemV R4 attached to it, and at $100.000.-
thats beyond scope for the application in question. Seems like they are 
dedicated to kill uucp. 

-michael

-- 
Michael Haberler 		mah@wu-wien.ac.at,  mah@awiwuw11.bitnet
University of Economics and Business Administration
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