When you are “surfing” the internet, have you ever wondered how proxy servers work? What are the differences between SOCKS5 and HTTP proxies, these “twin brothers”? I will use the analogy of a courier to help you easily understand the core differences between these two types of proxies. 1. Protocol Basics: The Essential Differences of … Read more
▼ Click the card below to follow me ▲ Click the card above to follow me Httpx: The Magic Wand for Asynchronous HTTP Requests in Python! HTTP requests are an indispensable skill in modern programming, and Httpx is definitely a dark horse in this field. Imagine being able to use one library to handle both … Read more
What is MQTT?MQTT is a lightweight communication protocol for the Internet of Things (IoT), based on a publish-subscribe model, widely used for real-time communication between devices. The MQTT Broker is the central hub for messages, responsible for receiving, storing, and distributing messages. Risks of Unauthorized Access to MQTT: Data Leakage: Attackers may subscribe to sensitive … Read more
In the previous issue, we introduced the CONNECT and CONNACK packets of MQTT 5.0:Detailed Explanation of MQTT Packets【01】: CONNECT & CONNACKNow, we will introduce the PUBLISH packet used for transmitting application messages in MQTT and its response packet.Whether the client publishes messages to the server or the server forwards messages to subscribers, the PUBLISH packet … Read more
In today’s and future intelligent distribution centers, flexible topology, automatic addressing, and inherent network security are justsome of the advantages of EtherCAT. Internal logistics is a stronghold for EtherCAT: in any other industry, the unique selling points of this technology have almost no such advantage. Due to its unique operating principle, EtherCAT offers many special … Read more
C++ Embedded Development: Hardware Interfaces and Real-Time Programming In today’s rapidly evolving technological environment, embedded systems have become a core component of many electronic products. C++, as a powerful programming language, is increasingly favored in the field of embedded development due to its object-oriented features. In this article, we will explore how to use C++ … Read more
The “APM32 Core” series summarizes user experiences with APM32 series products, all of which are reprinted from the 21ic forum’s Jihai Semiconductor section. The full text has not been modified, and reprinting without the original author’s permission is prohibited. Recently, I obtained the APM32F407IG-Tiny board, which is well-made, especially with the built-in DAPLink downloader. It … Read more
Understanding GCC Certification The Key to Entering the Gulf Cooperation Council Market In the wave of global trade, the Gulf region, with its vast consumer market and strong economic vitality, has become a hotbed for many companies seeking to expand. However, to smoothly export low-voltage electrical equipment to the seven Gulf countries—Saudi Arabia, Kuwait, the … Read more
Setting breakpoints is a very effective way to debug programs online. Combined with step-by-step debugging, it allows for quick problem identification. However, sometimes manually setting breakpoints can be inconvenient. For example, if you want to stop at the Nth iteration of a loop, you would have to keep clicking step run until the loop reaches … Read more
SoftwareDescription [Name]:Keil uVision2 C51 [Language]: Simplified Chinese [Software Installation Package Download]:See the end of the article [Installation Environment]:Windows 7 and above SoftwareIntroduction Keil uVision is a professional and practical C language software development system. Compared to assembly language, C language has significant advantages in functionality, structure, readability, and maintainability, making it easy to learn and … Read more