Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!tronsbox!tron1
From: tron1@tronsbox.xei.com (HIM)
Newsgroups: comp.mail.uucp
Subject: Re: What should a new UUCP protocol do?
Message-ID: <273c3e0a-e.9comp.mail.uucp-1@tronsbox.xei.com>
Date: 10 Nov 90 23:00:12 GMT
References: <1990Nov07.155516.17815@ism.isc.com> <565@mtndew.Tustin.CA.US>
Lines: 43


Actually .. if you are looking for a way to make a protocol that would make
lots of folks happy try this :
  

  IF you are going to define a NEW protocol (as opposed to tweeking one
     that exists ... look into one of the two way protocol's.

  Sure , this is a more extensive change but it is a provent technology.
     While machine A is sending with a "Zmodem" type in one direction, 
     machine B can ALSO be sending a "Zmodem" type in the other direction.

  Granted , some things must be done in case of error's that will stumble 
     the protocol for a packet or two every now and then , but with 
     high speed ECC modems like the telebits you still get an overall
     win on throughput.

  With some > 9600 baud modems the connection is not 9600 bi-directional
     but a 9600/2400 combination the flip flops, but you could detect
     that and switch to an older method or take the 2400 link anyway.



  I am using Diga! (an Amiga terminal program) as a mental starting base 
     here (and some experiments Ive done with folks here playing with
     this type of thing for a custom BBS ).

     They have a 2 way file transfer option that overlays a CHAT channel on
     top of THAT and the efficiency is almost a 160% speed savings.

     (A one way ZMODEM is faster for one file, but the two way tome is faster
      than two zmodems) 

  Look into it.

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=========== Ken Jamieson: uunet!tronsbox.xei.com!tron1  ===================
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