云消息队列 MQ协议emqttd开源项目源码分析的相关内容

[帮助文档] MQTT协议保留消息的概念、交互过程及使用场景_物联网平台(IoT)

保留消息用于确保新订阅Topic的设备能及时收到最新状态的消息，即使消息在设备订阅之前发布。服务端向Topic发布消息时，如果消息携带保留标记（Reatin），物联网平台将会保存这个消息并实时发布给订阅者，后续订阅该Topic的设备都会收到保留消息。保留消息在MQTT 3.1.1标准中就已定义，阿里...

[帮助文档] MQTT协议遗嘱消息的概念、交互过程及使用场景_物联网平台(IoT)

MQTT协议的遗嘱消息，用于在设备离线时向其他设备告知其已离线。如果设备异常断开且在一段时间内未重连，物联网平台会代为发送遗嘱消息。遗嘱消息在MQTT 3.1.1标准中已定义，阿里云物联网平台在MQTT 5.0接入时支持这个特性。本文为您介绍遗嘱消息的概念、交互过程及使用场景。

RocketMQ 5.0学习资料

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Apache RocketMQ：如何从互联网时代演进到云

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带您快速了解阿里云消息队列RocketMQ 5.0版

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[帮助文档] 设备如何使用MQTT云网关与物联网平台连接并进行通信

MQTT协议云网关采用标准的MQTT协议，支持使用自定义证书、服务端单向认证、设备端OCSP、设备和服务端双向安全接入和证书管理等能力。本文介绍物联网平台具体的MQTT协议云网关能力，及设备如何使用MQTT云网关与物联网平台连接并进行通信。

[帮助文档] 如何将设备接入物联网平台

设备通过MQTT协议云网关接入物联网平台时，设备身份可以由自定义证书认证，设备可以使用证书中CN信息进行注册。本文以MQTT协议云网关三方认证的阿里云FC认证为例，介绍如何将设备接入物联网平台。

[帮助文档] 如何将MQTT协议云网关设备模拟接入物联网平台并上报数据

本文以Windows系统下MQTT.fx为例，介绍如何将MQTT协议云网关设备模拟接入物联网平台，并上报数据。

我的mqtt协议和emqttd开源项目个人理解（9） - 集群和Mnesia源码分析

学习mqtt协议和emqttd开源项目http://emqtt.com/emqttd源码版本号是v1.1.3。http://emqtt.com/downloads/1113一、先来看EMQ的文档定义：http://emqtt.com/docs/v1/cluster.htmlemqttd集群设置管理¶...

我的mqtt协议和emqttd开源项目个人理解（5） - hook的使用，源码分析

学习mqtt协议和emqttd开源项目http://emqtt.com/emqttd源码版本号是v1.1.3。http://emqtt.com/downloads/11131、-module(emqttd_app).start(_StartType, _StartArgs) -> load_a...

我的mqtt协议和emqttd开源项目个人理解（4） - 客户端CleanSession=0时，上线接收离线消息，源码分析

学习mqtt协议和emqttd开源项目http://emqtt.com/emqttd源码版本号是v1.1.3。http://emqtt.com/downloads/11131、-module(emqttd_client).[html] view plain copy handle_info({ine...

我的mqtt协议和emqttd开源项目个人理解（3） - 客户端publish消息QoS==0的源码分析

学习mqtt协议和emqttd开源项目http://emqtt.com/emqttd源码版本号是v1.1.3。http://emqtt.com/downloads/1113源码写得比较绕，需要经过以下模块的调用，入口是emqttd_client模块，handle_info函数负责接收socket的数...

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