Boundary Conditions (ctd)


In practice, a few things should keep you out of trouble
Try to avoid having state objects referencing other state objects
.. or even worse, _BITS_ of other state objects
.. if an object goes away, your (well-designed and thought out) API and inter-request communciation paths should enforce enough notification and cause the link(s) to be broken
In a similar light, when a connection/object goes away, make sure it cleans itself up _entirely_
Never trust what is sent to you
_always_ sanity check the input from the network and be prepared to error out early on