version number

Brad Fitzpatrick brad at
Sun May 22 13:29:20 PDT 2005

That sounds great in theory, but it's never worked in practice.  As specs
grow, optional features grow, and people keep supporting subsets.

The more successful examples I've seen exchange capabilities, ala ESMTP
and IMAP.  I'm more inclined to go down that route.

- Brad

On Sun, 22 May 2005, Tom Phoenix wrote:

> > Look how shitty it worked out for SSH:  everybody advertises 1.9999
> > to mean that they can do both 1.0 and 2.0.   Lame.
> Shouldn't all parties involved in a transaction give a protocol
> version number, then use the protocol available in the lowest of the
> supplied numbers? If you can do version 17, but I only have support
> for version 11, then we fall back to the version 11 protocol.
> --Tom Phoenix

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