From: Rick Jones <[EMAIL PROTECTED]>
Date: Tue, 21 Feb 2006 15:48:57 -0800

> I disagree as to whether it is "foolhardy" but regardless, they are
> perfectly _legal_ whereas a TCP stack interpreting the window field
> as a signed quantity is most certainly _illegal_.  So the Linux
> stack as it behaves is rewarding explicitly broken stacks at the
> expense of stacks that are behaving perfectly legal manner.

A lot of things are legal which result in bad performance.  And that
is exactly the kind of choice these stacks are making.

> Unless I've missed an RFC, Window scaling is an _option_ not a requirement.

Just like this TCP option, good TCP performance is also optional :-)

> I'm not conceding the main point just yet, but would ask if you
> agree that seeing either Timestamp or SACK options would also
> identify a stack as being one that is not in error interpreting the
> window field?

That's one possibility.

I still think it's foolhardy for thes stacks to behave this way, and
it's certainly asking for bad TCP performance.
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