I've been reviewing the various sites and papers describing Trickle and
dissemination, such as:
http://docs.tinyos.net/index.php/Network_Protocols
http://docs.tinyos.net/index.php/Dissemination
http://www.tinyos.net/tinyos-2.x/doc/html/tep118.html
...as well as looking at code in $tosdir/tos/lib/net
One thing isn't clear to me...
Where would be the best place to add some logic to prevent child nodes from
further forwarding messages?
It seems that hops actually take place by signaling
"DisseminationCache.newData()", but it isn't clear where a top level program
would be able to control as stated in TEP118:
"For example, if you want have a
dissemination that causes only nodes which satisfy a predicate to
apply a change, you can do that by making the <t> a struct that stores
a predicate and data value in it, and layering the predicate
evaluation on top of the above interfaces."
How is the predicate evaluation coded on top, as stated? Or, where is the best
module to do it?
Thanks,
Kurt
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