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From: guy%gorodish@Sun.COM (Guy Harris)
Newsgroups: comp.dcom.lans,comp.protocols.tcp-ip
Subject: Re: Streams TCP/IP
Message-ID: <24335@sun.uucp>
Date: Tue, 28-Jul-87 14:59:11 EDT
Article-I.D.: sun.24335
Posted: Tue Jul 28 14:59:11 1987
Date-Received: Thu, 30-Jul-87 02:36:47 EDT
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Keywords: TCP/IP, Streams
Xref: mnetor comp.dcom.lans:694 comp.protocols.tcp-ip:741

I won't bother replying to the whiny little question at the end, but
I will point out a couple of things:

> I only meant that STREAMS is what you get with the current versions from
> ATT, without the cost of re-porting to each new AT&T release, you 
> don't get sockets or anything else.  A vendor that must rely on ATT
> to provide a base, a strategy based on sockets does not seem appropriate
> in the long term.

That depends on several things.  First, it depends on whether the
vendor wants to continue to depend on AT&T to provide a base, especially
given the S5R3 licensing agreement.  Second, it depends on whether
they want to re-port the rest of what they've done to S5R3.

Yes, STREAMS comes "for free" with S5R3.  This is not necessarily
sufficient to make it the best way to go.  Unisoft, I believe, offers
a socket implementation as part of their S5 ports.

> So what?  Warts can be removed, if deemed necessary.

It is not necessarily that easy.  The TLI uses the state information
that is kept in userland; it might have to be redesigned to remove
this particular wart.

It is not a given that the TLI will be the interface used for future
protocol implementations; a socket-based ISO implementation (which
may require changes to the socket interface) or some completely
different C-language binding of network operations may end up being
dominant.

> My response to a question someone asked was not meant to support or
> criticize STREAMS or the Socket implementation in 4.x based systems.

My response wasn't meant to do that either; it was meant to point out
the other side of various issues.
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
*!
AFN"("(".