✨A Small Advertisement: Live Room at the End of the ArticleDraw Huawei Peripheral Benefits~ Have you noticed that many apps now display a “IPv6“ logo at the bottom of the startup page? What exactly is this IPv6? Today, I will explain it to you. What is IPv6? Data transmission and connection between different networks are … Read more
Background Previously, we discussed how to publish messages and their corresponding packets; now let’s look at how the packets for subscribing to a topic are structured. SUBSCRIBE – Subscribe to a Topic The client sends a SUBSCRIBE packet to the server to create one or more subscriptions. Each subscription registers one or more topics of … Read more
The MQTT protocol, which stands for Message Queuing Telemetry Transport, is a lightweight messaging protocol based on the publish/subscribe model, designed for the Internet of Things. Here’s a detailed introduction: Protocol Basics Protocol Overview: MQTT was originally developed by IBM to provide a simple and efficient messaging communication method for resource-constrained devices and low-bandwidth, high-latency … Read more
This article is an excellent piece from the Kanxue forum. Author from Kanxue forumID: emqttx With the arrival of the 5G era, the grand vision of the Internet of Things (IoT) is becoming a reality. The number of connected IoT devices reached 7 billion in 2018[^1], and in the next two years, the number of … Read more
If the number of devices reaches one million, the database will have to handle two million authentication records, which will significantly affect the database’s performance. Is there a batch way to define ACL authentication? 1. ACL Authentication Rules Under normal business usage, the behavior of clients can be restricted using ACL. For example, Client A … Read more
[Background] During the discussion of a control command, we proposed to use the SOME/IP protocol, but the other party suddenly suggested using the MQTT protocol for transmission. This proposal was something we had not encountered before, which left us a bit confused. Therefore, classmate Jiahui conducted an investigation and comparison of the two protocols and … Read more
This post is from a handsome young graduate from Beijing in 2017 – Xiao Xiao Su. 1. Concept MQTT is an IoT communication protocol based on the Publish/Subscribe model. With its simplicity, support for QoS, and small message size, it occupies a significant share of IoT protocols. MQTT (Message Queuing Telemetry Transport) is a “lightweight” … Read more
Hello everyone, I am Xiaomai. Recently, I worked on an IoT project and summarized the MQTT protocol. As we all know, the MQTT protocol is widely used in the Internet of Things. If you are not very familiar with it, I believe this article can help you get started. MQTT Protocol 1 Features of MQTT … Read more
Recently, the term Internet of Things has become increasingly popular, and I have been closely following the development of this industry. The technologies related to IoT are also maturing, with NB-IoT preparing for commercial use and LoRa already piloted in some areas. The upstream ICs are also launching SoC products aimed at IoT applications. With … Read more
1. What Is MQTT MQTT (Message Queuing Telemetry Transport) is a lightweight, publish-subscribe based message transport protocol that is suitable for resource-constrained devices and low-bandwidth, high-latency, or unstable network environments. It is widely used in IoT applications, enabling efficient communication between sensors, actuators, and other devices. 2. How MQTT Works To understand how MQTT works, … Read more