基于受限网络应用层协议的物联网应用代理研究与实现

Network proxy research and implementation for Internet of things applications based on constrained application protocol

针对物联网(IoT)三层结构的研发独立性带来的应用研发高技术瓶颈问题,提出了基于受限网络应用层协议(CoAP)的解决方案。该方案在实现CoAP的基础上开发了CoAP-HTTP网络代理,允许用户通过浏览器直接访问物联网节点,进行资源发现、数据查询和资源订阅等。经测试,代理模式未影响系统的响应速率,代理运行稳定,可支持多用户同时对物联网节点数据访问。CoAP代理模式能够有效帮助应用开发人员规避底层开发与数据交换开发复杂性,辅助其独立生成新的应用,为物联网应用开发提供了新的思路。

To solve the problem of high technology bottleneck caused by the three-layer research and development independence of Intemet of Things （IoT）, a solution based on Constrained Application Protocol （CoAP） was proposed. This solution developed CoAP-HTI＇P network proxy based on CoAP implementation, which enabled users to access the IoT node resources through the browser directly, to discover resources, to query data and to subscribe resources, etc. The test results show that the proxy mode does not affect the response rate of the system and it is stable enough to support multiple users accessing the network node data at the same time. The CoAP Agent model can help application developers circumvent the complexity of low-level software development and data exchange development; hence they are able to generate a new application independently. The CoAP Agent model provides a new way for the application development of loT.