[Tinyos-help] Is Drip a one-to-many or a many-to-many protocol?

[Robert Taylor]

Thanks Phil!

2008/8/5 Philip Levis <pal at cs.stanford.edu>:

>
> On Aug 4, 2008, at 5:26 PM, John Hendrie wrote:
>
> > Thanks for the explanation.
> >
> > I have another question about sequence numbers. What happens when
> > the sequence number overflows? I can't see anything in the code that
> > deals with wrapping. Does Drip assume that the sequence number will
> > never wrap?
>
> Yes, it does. You can only change a variable 65,535 times. If this is
> an issue, you can use 32-bit sequence numbers, at which point it will
> take 248 days (at 200 packets per second) to even increment across all
> 32 bits. But this would cost an extra 2 bytes/variable, and we thought
> 65,535 was sufficient for almost all reasonable cases.
>
> Phil
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