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Mail Archives: djgpp/1999/08/04/21:46:36

Message-ID: <37A7EBF3.91958FF2@megsinet.net>
From: David Oppenheimer <davidopp AT megsinet DOT net>
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: I am absolutely new to programming
References: <iSop3.127$m67 DOT 289214 AT news DOT bctel DOT net> <7o5pin$t74 AT dfw-ixnews10 DOT ix DOT netcom DOT com> <37A691B3 DOT EC8F8936 AT snip DOT net>
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Date: Wed, 04 Aug 1999 03:29:55 -0400
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Please note that hyperlinks are governed by a host to host protocol called UDP
or User Datagram Protocol which is very unreliable and has zero error checking
(kinda like sending off a postcard onto the WWW with the message "I am looking
for remote server 217.64.76.93". There is no two way communication, no virtual
circuit, no sequencing, no reliability).  It is quite quick and requires much
less CPU overhead, but lacks some of the advantages of TCP or Transmission
Control Protocol - a host to host protocol used for downloading files.  (TCP
has error checking, sequencing, acknowledgments, and is very reliable.  It is
comparable to a phone call where you might say "Are you there?" "Yes I'm
here." " I am ready to send you some information"  "I am ready to receive it"
"Did you get the information I just sent?" etc. etc. etc.)

Before jumping to the conclusion that a hyperlink is bad, or that a server on
the WWW is down, you need to try a hyperlink at least several times due to the
inherent unreliability of the UDP protocol.

David Oppenheimer

Hyper wrote:

> Marp wrote:
> >
> > Try this site:
> > http://www.swcp.com/~dodrill/
> >
> > They have C, C++, and Ada95 tutorials for beginners. I suggest you start
> > with C.
> >
> bad link, server not found
>
> --
> My heart goes out to the families of Gene Hart and Dimitri Tertyshny
> Who both died tragically during the month of July, in two seperate
> instances
> May both of your souls rest in peace
> Personal page -- http://members.xoom.com/Hyper_Hands/

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