物联网平台mqtt协议通信的相关内容

[帮助文档] MQTT协议保留消息的概念、交互过程及使用场景

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

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。

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[帮助文档] NLB助力EMQ构建高性能企业级MQTT物联网接入平台

EMQ使用NLB实现亿级设备的并发管理，构建高性能、高可靠、低成本的企业级MQTT物联网接入平台。

阿里云物联网开发支持LWM2M、MQTT、COAP哪些协议，支持NB、LoRa、WiFi等哪些通信模

【物联网云端对接-2】通过MQTT协议与阿里云物联网套件进行云端通信

在《程序员》杂志2017.4刊上，曾写过一篇《微软百度阿里三大物联网平台探析》，上面曾介绍了阿里云物联网套件的一些内容，在写该篇文章的时候，凌霄物联网网关还无法对接到此平台（TLS必须1.1版本以上）。但是随着阿里云物联网套件的不断发展，目前设备除了支持HTTPS认证外，也支持MQTT客...

【物联网云端对接-4】通过MQTT协议与百度云进行云端通信

百度云的天工物联网服务目前包括：物接入、物解析、物管理、时序数据库和规则引擎等5大部分，本篇文章仅介绍物接入。天工物联网的物接入，从开发者的角度来说相对有些复杂，需要多步操作才能实现一个云设备的创建，下面我们将详细介绍一下相关的步骤：第一步：创建实例（类似工程中的项目概念）支持三种方式访问。T...

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更新时间 2024-04-09 09:32:47

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