HTTP proxies are widely used for enhancing network security and efficiency. However, many users focus solely on the convenience they offer, overlooking the potential risks. Five Hidden Risks of HTTP Proxies ① Abuse of Proxy Servers Employees may access illegal websites through proxies, exposing the company to legal risks. For instance, some employees might use … Read more
I’ve seen someone ask this online, so I would like to share my answer. The person asking further elaborated: If I treat the server’s HTML, CSS, images, etc. as files transferred to the client and then assemble them for display, can I achieve the functionality of a webpage? This is a seemingly simple question that … Read more
Introduction In the previous article, “Common Application Layer Protocols: Analyzing HTTP from a Traffic Perspective (Part 2),” we introduced the concept, principles, development history, traffic decoding, and simple analysis methods of the HTTP protocol from a traffic analysis perspective. We also discussed two important metrics: request methods and status codes. Today, we bring you the … Read more
Serialization of String Messages In the previous article, we used the <span>MQTTnet</span> framework to implement an MQTT server, an MQTT publisher process, and an MQTT subscriber process. During the messaging process, we directly passed the string from the console. Since MQTT is an application layer protocol, it is based on TCP for data transmission. We … Read more
MESSAGE QUEUING TELEMETRY TRANSPORTWhat is the “MQTT” Protocol? MQTT (Message Queuing Telemetry Transport) is a standard (ISO/IEC PRF 20922) based on the publish-subscribe paradigm. It operates on top of the TCP/IP protocol and is designed for remote devices with limited hardware capabilities and poor network conditions, making it a publish/subscribe messaging protocol that is lightweight, … Read more
C++ Network Programming: Implementation of TCP/IP Protocol In modern computer networks, the TCP/IP protocol is one of the most important communication protocols. It provides a reliable way for data transmission between different devices. In this article, we will implement a simple TCP client and server using C++ to help beginners understand the basic concepts and … Read more
In the wave of embodied intelligence, robots are evolving from “programmed mechanical arms” in laboratories to integrated agents of “perception-decision-execution”. In this process, communication protocols act as the robot’s “nervous system”, determining its action precision, collaboration efficiency, and adaptability to various scenarios. The EtherCAT technology represents a core breakthrough in this evolution. Guoxun Chip Micro … Read more
In industrial automation, communication between devices is a crucial aspect. Whether it is sensors, actuators, PLCs, or industrial computers, they all need to “talk” to each other in some way. Fieldbus technology was born to solve this problem. Today, I will introduce you to three common fieldbus technologies: MODBUS, CANopen, and PROFIBUS, discussing their basic … Read more
Introduction: The “Telephone System” of Industrial Energy Meters Imagine hundreds of energy meters in a factory like silent soldiers, and you have no way of knowing their real-time data—this information black hole is something every engineer has experienced. Today, we will reveal in simple terms how to build an “industrial telephone system” using the S7-200 … Read more
Recommended by Deepseek! A free OT+IT industrial visualization platform.Struggling with Modbus master-slave relationships?A single article on implementing Modbus communication in C# is enough!Modbus protocol gateway explained by industrial control experts! It’s amazing. What is Modbus and what is it used for? When it comes to industrial automation, Modbus is definitely a topic that cannot be … Read more