mqtt server by go 简单版使用go语言开发mqtt服务端

github.com/gorilla/websocket websocket开源代码，用于处理mqtt客户端使用websocket进行连接 github.com/Unknwon/goconfig 配置文件读取 github.com/eclipse/paho.mqtt.golang mqtt协议解析，这里copy了代码做了部分修改 一并表示感谢

消息存储 topic管理优化 brage集群消息互通 http管理接口编写

写的不好,轻喷，持续优化中，谨慎使用。

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