Two patterns in conversion between HTTP2 and CoAP : Request-Reponse and Publish-Subscribe

The Internet of Things is an important part of our lives. It consists of traditional networks and constrained networks. We use HTTP protocol to connect every endpoint in traditional networks, which has been upgraded to HTTP2 in 2015. In terms of constrained networks, IETF established the Core Working Group and defined the CoAP protocol to implement communication of restricted sensors. In order to make every endpoint can really connect to each other in IoT, it is necessary to study how HTTP2 and CoAP can be converted to each other in request-response pattern. In order to make HTTP2 supported IoT feature better, this paper also implements publish-subscribe pattern in this conversion.