“Did the API request fail? There was no prompt at all!” “The backend returned 401, and I’m still clicking on the page…” If you have encountered similar awkward situations in your project, you may need to understand the HTTP request interception and error handling mechanism in the frontend. In modern frontend projects like Vue/React, API … Read more
⬆ Follow “Python-Wu Liu Qi” to learn easily together～ After reading this article, your code debugging skills will improve 🌈Hey, friends! Today, let’s talk about those annoying error messages in Python programming. Writing code and encountering errors is a common occurrence. When faced with a pile of English error messages, how can you quickly identify … Read more
Click “Industrial Control Lao Xu” to follow me Introduction “Why does my PLC program crash while running?” “Clearly the logic is fine, but the output signals are jumping around?” PLC programming may seem simple, but beginners (and even experienced engineers) often fall into pitfalls due to some detail issues. This article summarizes the ten most … Read more
HTTP Status Codes Today, let’s talk about the topic of HTTP status codes! Whether you are a beginner or an experienced developer, HTTP status codes are an essential knowledge point that you must master! They can help you solve problems and improve your website’s performance and user experience. Are you ready? Let’s dive in! Classification … Read more
In C, the atoi function is a commonly used function for converting strings to integers. This function is particularly useful when handling string input, especially when it is necessary to convert user-inputted numeric strings to integer types. This article will provide a detailed explanation of the usage of the atoi function to help readers better … Read more
Click the above“Embedded and Linux Matters” Select“Top/Star Public Account” Welfare and valuable content delivered promptly Defensive Programming The reliability of embedded products is naturally inseparable from hardware, but when the hardware is determined and there is no third-party testing, code written with the idea of defensive programming often has higher stability. Defensive programming first requires … Read more
In the previous article, “30-Day Challenge: Linux Server Program Development: Starting from Sockets,” we implemented a client that initiates a socket connection and a server that accepts a socket connection. However, for functions like socket, bind, listen, accept, and connect, we assume the program runs perfectly without any exceptions, which is clearly impossible. No matter … Read more
Recently, I have seen many articles analyzing Oops, and on a whim, I would like to discuss Oops in conjunction with Panic. In the Linux system, Oops (commonly referred to as Kernel Oops) is an error reporting mechanism triggered when the kernel encounters an error that it cannot handle normally (such as null pointer dereference, … Read more
A teaching project, a simple HTTP server implemented in C language. github.com/mustafa-khann/http-server The project will be built from scratch, aiming to understand the principles of web servers and the HTTP protocol. Currently still in serialization, ✨ The first phase aims to implement: Single-threaded HTTP/1.1 server – handling one request at a time Support for GET … Read more
In the field of industrial automation, the MODBUS TCP protocol is widely popular due to its simplicity and broad applications. However, some issues are inevitable during its use. Today, we have compiled some common questions to assist you in your debugging and usage! 🚀1. What is MODBUS TCP?MODBUS TCP is a communication protocol based on … Read more