TCP is designed for single connections, where the requesting end places the data to be transmitted in order into a pipeline, and the final data appears at the other end of the pipeline in the same order. unsetunsetTCPunsetunset HTTP/1.1 TCP Data Transmission Process Diagram The sent data is split into packets, which are transmitted over … Read more
Technical Comparison of HTTP/2 vs HTTP/3 🚀 The HTTP protocol is an essential foundation for modern web communication. As network demands have evolved, the HTTP protocol has progressed from its earlier versions to HTTP/2 and the latest HTTP/3. This article will provide a detailed analysis of the technical differences between these two versions through comparative … Read more
QUIC is the TCP terminator developed by Google, and Microsoft has launched its own version of QUIC: MsQuic.Microsoft revealed that it is a user of QUIC. QUIC is the successor to TCP and is essential for HTTP/3; however, it has not garnered much interest outside of Google and Cloudflare.The full name of QUIC is Quick … Read more
On a summer day in Shanghai, a child takes a nap. TCP/IP is essentially something that most programmers in the internet industry cannot do without. Unfortunately, I have found that many people have only a superficial understanding of TCP. The better ones know it exists but do not understand the underlying principles, which leads to … Read more
How to determineif a Modbus TCPconnection is established? Answer: To performModbus TCPcommunication, a connection must be established. S7-200 SMART CPUas aModbus TCPclient: You can determine the connection status using the Modbus TCP Client instruction’s symbol table parameter mConnected, as shown in Figure 1. If mConnected=1, it indicates that the connection has been established, while mConnected=0 … Read more
Industrial Automation Maintenance Manual: Modbus TCP Communication Troubleshooting and Optimization Guide 0 â–² 90% of Engineers Overlook Modbus TCP Communication Risks: Timeout Settings and Message Boundary Handling Dear friends, I am Wang, and I have been working in industrial control for over ten years. Today, let’s talk about the Modbus TCP protocol, which seems simple … Read more
Background This article is derived from a previous Weibo post I made: However, the purpose of writing this article is not to help everyone prepare for interviews, but to use this question to introduce basic knowledge of computers and the internet, allowing readers to understand how they are interconnected. For ease of understanding, I will … Read more
Recently, I needed to implement an HTTP interface for a project. So, I took this opportunity to explain the relationship between HTTP and sockets, as well as their connection to TCP. First, it’s essential to understand that in the network layer architecture, the HTTP protocol belongs to the application layer, while the TCP protocol belongs … Read more
When we click on a URL and it is displayed in our browser, what exactly happens in the computer and over the network during this process? Server Starts Listening The story actually does not begin when we enter a URL in the browser’s address bar or click on a link; it traces back to when … Read more
Author l Hollis Source l Hollis (ID: hollischuang) Since HTTP/1.0 and up to HTTP/2, regardless of how the application layer protocol has improved, TCP has always been the foundation of the HTTP protocol mainly because it provides a reliable connection. However, starting from HTTP 3.0, this situation has changed. Because, in the newly released HTTP … Read more