This project is aimed to build WSN Middle ware for WSN (wireless sensor network) providing interfaces to assemble the nodes data by subscribing and unsubscribe the node. The node can be classified into two types, the sink and the sensor node. The Sink is able to subscribe a certain type of sensor node and force these sensors nodes assemble data and send back to the sink through multi-hops routing. The sink is also able to unsubscribe a type of sensor node, so that it will be able to stop receiving data from a certain type of sensor node. The middle ware should also support the node arriving and node leaving, new routes will be created while the node joining and failing. Basically we mainly provide three types of interfaces, which are Subscribe, UN-Subscribe and Publish. At the same time, the middleware should decrease the reliability(e.g.) message loss and extreme situation such as a very dense network. In that case, the routing will be more unreliable and interruption will happen very often. The middle ware should be able to run reasonable delivery ability in such a very dense network.

The HEAT.c and Sensor.c are the same code with different pre-configurations in the init(node), you can rename the file to the type of sensor you want.