From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <52436666ab0be4d028086956a4375b78@terzarima.net>
From: Charles Forsyth <forsyth@terzarima.net>
Date: Sat, 30 Jul 2011 22:57:53 +0100
To: 9fans@9fans.net
In-Reply-To: <86y5zftuxj.fsf@cmarib.ramside>
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Subject: Re: [9fans] 9p specification: minimum number of fids?
Topicbox-Message-UUID: 08f45d66-ead7-11e9-9d60-3106f5b1d025

the value of a fid is a 32-bit number, but a server will typically
have a practical upper limit on how many distinct values it can track,
limited for instance by memory.
in your Arduino case, a dozen or so would normally be plenty,
and the server can reject Tattach,Tauth, and Twalk requests with an error
if it couldn't handle a client's declaration of a new fid, so it would
fail gracefully without disrupting current communications.