Dave Tweed wrote:
>> > ... you have to think carefully about what the receiving node might
>> > do if it receives two separate valid commands. A sequence number is
>> > the usual way around this, but there are other strategies.
>> 
>> - Avoid "vague" commands ("toggle") in favor of more specific ones
>>   ("turn off")
> 
> Specifically, look up the term "idempotent", especially as it applies to
> computer networks.

Thanks, Dave. I had to google it. :)

Vitaliy
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist