关键词: 物联网, 6LoWPAN, 受限网络应用层协议, 网络代理, WebSocket

Abstract: To solve the problem of high technology bottleneck caused by the three-layer research and development independence of Internet of Things (IoT), a solution based on Constrained Application Protocol (CoAP) was proposed. This solution developed CoAP-HTTP 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 IoT.

Key words: Internet of Things (IoT), IPv6 over Low power Wireless Personal Area Networks (6LoWPAN), Constrained Application Protocol (CoAP), network proxy, WebSocket