金鸽物联网云平台Demo，使用Netty框架，实现TCP长连接的Server。金鸽RTU使用自定义协议连接本Demo，可实现数据采集、控制、心跳包发送等功能。 The KingPigeon IoT Cloud Platform Demo uses the Netty framework to implement long TCP Server. The KingPigeon RTU uses a custom protocol to connect the Demo, which can realize the data collection, remote control, and sending heartbeat message.