Stephane Bortzmeyer wrote:
On Wed, Jun 28, 2006 at 10:04:54AM -0400,
Henning Schulzrinne <hgs(_at_)cs(_dot_)columbia(_dot_)edu> wrote
a message of 48 lines which said:
Having a more formal description of state machines is a natural next
step from having, say, a good syntax description in ABNF.
Unfortunately, unlike ABNF, none of these (except SDL) have a long-
term stable reference. If we worry about PDF not being around for
future RFC readers, I am a bit more worried about the authors of a
SourceForge volunteer project finding other things to do.
Thus, I think the first step would have to be to define a (subset)
of a suitable language as an IETF-stable document,
You are absolutely right and here is my first attempt:
http://www.ietf.org/internet-drafts/draft-bortzmeyer-language-state-machines-00.txt
See also http://www.cosmogol.fr/ if you want the HTML version.
Comments, flames, criticisms, patches, suggestions and running code
are highly appreciated.
Isn't there a suitable text based state description language published
by the
CCITT that we can use rather than invent our own from scratch? There
was a lot of work done on this back in the days of Chill to describe the
operation of SPC telephone exchanges.
- Stewart
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