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@REPLYADDR Neil Rieck <n.rieck@bell.net>
@REPLYTO 2:5075/128 Neil Rieck
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On Thursday, September 28, 2023 at 3:49:37 PM UTC-4, Lars Brinkhoff wrote:
> Johnny Billquist wrote:
> > There were of course development, and testing done between machines
> > and so on. But that was not "ARPANET". ARPANET was running NCP until
> > flag day, when it officially switched to IP.
> NCP and TCP operated in parallel on the ARPANET for a while. The
> Internet Protocol Transition Workbook from November 1981 encouraged new
> hosts to only implement TCP, not NCP, and says at that point there were
> TCP-only hosts. On several occasions during 1982, NCP was temporarily
> blocked, but TCP was allowed. What happened on flag day was that NCP
> was permanently blocked.
>
> So what I was wondering was: were there any VAXen talking NCP, or did
> they jump straight to TCP? I`d like to see evidence, not handwaving.
Most people reading this thread will all ready know much of the
following facts:
1) ARPANET research begins in 1966 (ARPA becomes DARPA in 1972)
2) A lot of people were writing their own client/server
modifications before 1982, and much of it was in assembler
3) The various network modifications were not compatible, so DARPA
wanted to develop a newer technology which would allow the various networks
to interconnect (this is where the second name, internet, comes from)
4) Many people today do not know that UDP was developed 5-6 years
`after` TCP (many think it was the other way around; UDP was primarily
developed to aid in packet routing but today it has many other uses (SIP
springs to mind))
5) DARPA needed standardized protocols and code; this would best
come from one team. Not sure of all the politics, but much of this
work eventually came from a gifted programmer at UC Berkeley by the name
of Bill Joy. He did a lot of his work on a VAX running BSD UNIX.
6) I`m not certain who moved all the assembler code into C, but
once that was done, it was distributed amongst all the universities who
were running UNIX systems.
7) I knew a lot of people who were running third party stacks on
their Windows and Macintosh systems between 1994 and 1998. At that time
network communication interfaces all cost a lot of money, so most newbies
were asking questions like "how can I be using this internet stack for
free?" My answer was always "anything developed by the US tax payer is
usually placed into the public domain".
Neil
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