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README
Apache-2.0

通过netty实现自定义协议物联网网关(单机和集群版)

window笔记本电脑本地测试:单网关单前置节点,每秒处理并发心跳6000+(根据jmeter本地最新压测统计数据),20W在线终端内存占用量1G左右

心跳检测

终端设备超过300秒与网关无任何数据传输,则网关主动关闭当前通道,并清理缓存

入口类:

Entrance.java

IOTGate操作指南

https://blog.csdn.net/sinat_28771747/article/category/8788959

命令行参数说明

参数 是否必选 是否含参 含义
-n 网关编号
-c 启动集群模式
-z zookeeper集群地址
-m 前置ip地址(不含端口,前置默认8888)
-f 配置文件"iotGate.conf"的本地全路径

如何启动

自行将项目打成jar包,在linux下,执行java -jar iotGate.jar -n 1 [args...] 默认前置端口为8888,可自行源码中修改

  • 单机方式启动 :命令行参数使用“-m”指定前置服务地址
  • 集群方式启动:命令行参数“-c”开启zookeeper集群模式,“-z”指定zookeeper集群的地址(逗号分隔)
  • 单机版网关不支持IOTGateConsole控制台动态维护,因为IOTGateConsole的节点发现依赖于zookeeper,集群版网关无论节点多少依然可以通过IOTGateConsole管理

自定义网关头结构与注意事项

网关报头,是网关与前置通信时,作为网关登录和传输真实报文时携带网关自身和终端响应参数的报文,报文结构是自己定义,前置按照定义好的报文格式获取数据并做相应处理。 网关头结构如下:

报文属性 字节数 含义
A8 1byte 报文头
len 2byte 长度域:真实报文长度,包含“68”,“16”
type 1byte 报头类型
protocolType 1byte 协议类型(左侧起第一个bit为0 表示IPV4, 1表示IPV6 剩余7个bit表示规约类型编号)
gateNum 1byte 网关编号
00*12 12byte 如果ip格式为IPV4,则当前为12字节0,反之,当前得12个byte+后续得4byte存放IPV6的值,存放顺序从左至右依次
clientIP 4byte 终端的IP地址,ip地址的每个段位占一个字节(不含符号和端口号)
port 2byte 终端对应的端口号
count 4byte 终端与网关建立连接时对应的连接序号(1-10000循环)

网关发送需要向前置发送登录报文,将自己注册到前置服务中,报文说明如下:

    1. 登录时长度为0;有真实报文时,长度域为整个真实报文长度值
    1. 登录时type = 03;protocolType=15;count=1都为固定值;发送真实报文时,type=01,protocolType=00;count=终端与网关的连接序号
    1. 前置发现报头长度为0 且type = 03; protocolType=15;就不会执行解析数据的方法,否则会继续解析真实报文

网关配置文件种默认支持的两种真实报文

*“真实报文”即终端与网关通信时传输数据的报文,规约不同则报文结构差异明显
  • 规约编号为“1”,报文结构如下
报文属性 字节数 含义
68 1byte 报头
len 2byte 长度域 "传输帧中除起始字符68和结束字符16之外的帧字节总数,包含长度域本身字节数"
data n byte 报文内容
16 1byte 报尾
  • 规约编号为“2”,报文结构如下
报文属性 字节数 含义
len 4byte 长度域值为data的字节数,不包含自身字节数
data n byte 报文内容

版本规划

  • IOTGate-v1.0 版本为集群版网关程序,通过命令行参数动态配置网关为单节点或集群(单节点不依赖zookeeper集群) 网关与前置通讯时默认轮询方式负载均衡
  • IOTGate-v2.0
  • master 基本功能开发完成,已经支持多规约本地配置以及IOTGateConsole远程开启/关闭/新增/删除网关多规约服务功能。后续master会继续扩展相关功能

关于多规约支持

物联网虽然火起来,但目前业内还没有比较统一的通讯规约,MQTT是目前业界使用比较广泛的物联网通讯协议了,我看了下阿里最近弄出来的物联网平台其主要也是支持MQTT物联网设备的接入,但他毕竟不是唯一的通讯规约,光我自己知道的通讯都有好几种了,而且每一种规约的报文格式都各不相同,因此,所谓多规约支持,也不可能做到所有物联网规约全支持,我目前的想法是,通过多规约得基础功能和高级功能可以将比较流行物联网规约都能够支持! 那么IOTGate如何配置实现多规约支持呢? 请看博客:https://blog.csdn.net/sinat_28771747/article/details/88783309

GATE CLUSTER 结构图

集群版IOTGate架构 注:GATE CLIENT(项目名称“IOTGateConsole”,项目地址:https://gitee.com/willbeahero/IOTGateConsole ) 是一个web工程,用户登录之后可以查看当前GATE CLUSTER的运行状态监控,并可执行网关重启、关闭、启动,网关多规约支持策略等操作:

IOTGateConsole 规约维护 更多关于IOTGateConsole的说明请到博客中查看

计划新增功能

  • 网关实时报文转发数量统计
  • 网关实时吞吐量统计
  • 设备白名单
  • 数据加密

联系方式

  • QQ群:844082385(免费群)——仅限IOTGate技术交流,详见《进群须知》

补充一点说明

项目相关文档我会全部写在我自己的博客里面,请大家参阅!谢谢大家的支持!!欢迎大家提供真实的使用案例

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JAVA版基于netty的物联网高并发智能网关 展开 收起
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