Fundamentals of TCP/IP – 489 Pages
Screenshots of eBooks in the resource collection The Complete Hardware Resource Collection
10-gigabit networking
Network Interface Priority and Metric in Linux
In embedded development and network operations, when devices connect to different networks through multiple network interfaces (such as Ethernet, Wi-Fi, and 4G modules), how can we ensure that data packets are transmitted through the “optimal path”? The core of this is the metric. This article will delve into this mechanism and introduce simple operational commands. … Read more
Summary of 600 Powerful Linux Commands
1. Basic Commands uname -m # Display the machine's processor architecture uname -r # Display the currently used kernel version dmidecode -q # Display hardware system components (SMBIOS / DMI) hdparm -i /dev/hda # List a disk's architectural features hdparm -tT /dev/sda # Perform a test read operation on the disk arch # Display the … Read more
ESP32 MicroPython WiFi Testing
Development Steps: Connection Process 2. Core Functions Station Mode (Connect to Router) AP Mode (Create Hotspot) Network Scanning HTTP Requests Socket Communication Test Code: 1. Connect to WiFi (Station Mode) import network import time # Configure WiFi SSID ="your_wifi_ssid" PASSWORD ="your_wifi_password" sta_if = network.WLAN(network.STA_IF) sta_if.active(True) if not sta_if.isconnected(): print("Connecting to WiFi…") sta_if.connect(SSID, PASSWORD) # Wait … Read more
Detailed Explanation of MODBUS Protocol 6: A Deep Dive into MODBUS TCP/IP
Click to follow and never lose your way in learning! In the previous chapters, we thoroughly explored the MODBUS protocol in serial communication, from basics to applications, and it was quite an exhilarating journey. However, as times progress and technology advances, serial communication, while classic, is like a horse-drawn carriage that cannot keep up with … Read more
Best Practices for Implementing UDP with Vert.x in IoT
Hello everyone, I am Laokou, and let’s learn how to implement a UDP server using Vert.x together. Implementing UDP Vert.x Core Address Note UDP is a connectionless protocol, which means there is no persistent connection established with the remote client. Therefore, the data packets you send and receive must include the remote address. Additionally, UDP … Read more
PythonNetKey: The Python Interface for Network Keys!
In the digital maze of the internet, we often yearn for a key that can easily traverse network barriers. Today, I want to share with you a super cool Python networking tool — PythonNetKey . This is not just an ordinary network module, but a magical tool that helps you elegantly handle network connections, data … Read more
Linux Knowledge Presentation at Hebei University of Science and Technology
The event is in progress, and the speaker has embarked on a journey of knowledge, from the origin story of Linux to its development history, delving into system architecture analysis, interspersed with practical demonstrations. Everyone is closely watching the operation steps on the screen, quickly taking photos to record key content. When explaining command line … Read more
The Six Major Applications of PLCs in Industrial Control That Many Experienced Electricians May Not Know!
PLCs come in various sizes, allowing for a wide range of control capabilities. Smaller PLCs may control a single device or even a component at a single site, while larger PLCs can manage multiple devices, an entire production line, or even an entire factory. It can be said that PLCs are indispensable in both small … Read more
Interviewer: Is HTTP Based on TCP or UDP?
Today’s computer network interview question has been asked by major companies such as ByteDance, Meituan, and Tencent, making it quite common. Before HTTP/3.0, it was based on the TCP protocol, but HTTP/3.0 will abandon TCP in favor of the UDP-based QUIC protocol: HTTP/1.x and HTTP/2.0: Both versions of the HTTP protocol are explicitly built on … Read more