Today, I will introduce the core part of Linux networking technology – the TCP/IP protocol stack. First, let’s look at the abstract network protocol stack model. TCP/IP Four-layer (Reference) Model Next, we’ll look at the Linux kernel protocol stack implementation framework from a layered perspective. Top-Down Approach Socket / L4 TCP Layer 1. Socket Layer … Read more
To better explain this abstract topic, we will analyze the same issue from different perspectives. Remember the story of the blind men and the elephant? Some say the elephant is like a large tree, while others say it resembles a fan. These views are certainly one-sided, but if we gather all these perspectives, we can … Read more
Join the group once, and receive tutorials for free long-term, no paid tutorials. Tutorial ListSee the bottom menu of the WeChat public account Reply in the WeChat group: WeChat Group; QQ Group:16004488 WeChat Public Account: Computer and Network Security ID: Computer-network TCP/IP is the protocol currently used on the Internet. The reason it has achieved … Read more
(Click the public account above to quickly follow) Source: Wang Dongyu Link: http://wangdy.blog.51cto.com/3845563/1588379 OSI Reference Model OSI RM: Open System Interconnection Reference Model The OSI reference model has the following advantages: Simplifies related network operations; Provides compatibility and standard interfaces between devices; Promotes standardization efforts; Structurally separable; Easy to implement and maintain. Since the 1960s, … Read more
Author: MobMsg, a Senior Full-Stack Engineer and Partner at the Architect Community! TCP/IP Protocol Family The core protocol of the Internet is TCP/IP, widely used in local area networks and wide area networks, with a development history of over 20 years, and is the current international standard. TCP/IP is a protocol family that includes various … Read more
Today, let’s talk about the differences between Modbus and TCP. These two protocols have both differences and close connections. Their combination not only enables remote network communication based on the Modbus/TCP/IP protocol but also promotes the use of Modbus in its corresponding fields. The Modbus protocol is mainly used in electrical automation and process control, … Read more
1.Understanding Network Device Driver Development In today’s digital age, the network is as ubiquitous and essential as air. Whether we are browsing the web, watching videos, or enterprises are conducting large-scale data transfers and deploying cloud services, the network plays a crucial role. Behind the scenes, there is a “silent hero” performing a key function: … Read more
Building a network medical information system with C++: Opening a new chapter in smart healthcare 1. Introduction In today’s digital era, the healthcare industry is undergoing profound changes, and network medical information systems have become a key force in enhancing the quality and efficiency of medical services. C++, as a powerful programming language, possesses unique … Read more
01 HDMI Switching 1. Introduction This four-channel HDMI video switch controller has been used in my laboratory video recording process. It can be controlled via the front panel buttons or through commands sent over the network. To facilitate remote control on the experiment bench, I am preparing to use this wireless WiFi to serial module … Read more
Author: aurelianliu Refer to scheduling, memory, files, networks, etc., encountered during work. 1. OS Running States X86 architecture, user mode runs in ring3, kernel mode runs in ring0, two privilege levels. (1) The kernel and some privileged instructions, such as filling page tables, switching process environments, etc., generally operate in ring0. Kernel mode includes the … Read more