Totally different approach for Physical context gathering - We use the rpush and lpop for distributed purpose
Problem solved: The use of a lock to adquire the redis list, permits to multiply the number of servers to process messages.
Redis subscript from physical network to system is now a simple component to notify the system to lpop redis on a given key.
physical network added ( data format are not the same as arduinopushing.py )
changes on arduino push and pull