Abstract
IoT devices will be everywhere, will be context-aware and will enable ambient intelligence. This provides a possibility of a framework that would allow direct machine-to-machine communication. This vision has produced an exemplar which is often referred to as the Internet of things (IoT). We have studied the application level IoT protocols namely, The Constrained Application Protocol (CoAP), Message Queuing Telemetry Transport (MQTT) and the Hypertext Transfer Protocol (HTTP)/REpresentational State Transfer (REST). We have used the cooja simulator for carrying out the simulation. We have simulated the above protocols in the cooja simulator demonstrating a simple scenario of three motes. We have read the sensor information from the server with the help of browser. We can also make use of different topologies and simulate the scenario according the requirement.
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