Java Network Programming TCP/UDP (Socket)

Network programming 1.1 overview Purpose: Dissemination and exchange of information, data exchange and communication What you want to achieve: How to accurately locate a host on the network: ip:port locate a resource on this machineFound this host, how to transfer data javaweb: Web programming B/S Network programming: TCP/IP C/S 1.2 ele ...

Posted on Fri, 03 Dec 2021 17:20:00 -0500 by collamack

Opencv - python quick start

Opencv - python 1. IO operation of image 1.1 reading images 1.API cv.imread() Parameters: Image to read Flag of reading mode cv.IMREAD*COLOR: load the image in color mode, and the transparency of any image will be ignored. This is the default parameter. cv.IMREAD*GRAYSCALE: load the image in grayscale mode cv.IMREAD_UNCHANGED: lo ...

Posted on Tue, 23 Nov 2021 05:23:25 -0500 by mwichmann4

The third experiment of computer network in Xiamen University

The third experiment of computer network in Xiamen University preparation 1. Install the local echo service and listen to port 7. I use the ubuntu virtual machine, and the modified files are slightly different from CentOS 7. You can see that I have configured it. (if you don't need to configure it, you can search and open the echo standard ...

Posted on Mon, 22 Nov 2021 03:22:15 -0500 by zeropaid

[QT] make a network debugging assistant by hand (UDP design)

Use of TCP and UDP network communication classes Pornhub 1. Procedure framework construction Then, in the last article, we began to design the related functions of UDP. First, hide the related UDP configuration; 1.1 explanation of constructor MainWindow::MainWindow(QWidget *parent):QMainWindow(parent),ui(new Ui::MainWindow) Its mea ...

Posted on Thu, 04 Nov 2021 15:19:48 -0400 by oh_maestro

linux network notes

Overview of network programming 1, Differences between TCP and UDP protocols: Understand the difference between TCP and UDP - Fundebug - blog Garden 2, TCP/UDP comparison: 1. TCP is connection oriented (for example, dial up to establish a connection before making a call). UDP is connectionless, that is, it is not necessary to establish a co ...

Posted on Sat, 30 Oct 2021 01:04:03 -0400 by rj2kix

Ubuntu 20.04 implementing PXE and installing Ubuntu 20.04 server

1, PXE introduction 1.1 PXE introduction PXE (pre boot execution environment) is the latest technology developed by Intel. It works in the network mode of Client/Server, supports workstations to download images from remote servers through the network, and thus supports the startup process of operating systems from the network. 1.2 PXE w ...

Posted on Mon, 18 Oct 2021 03:00:53 -0400 by Drakkie

Sticky packet problem involved in network sending and receiving data and its solution

1, What is a sticky bag: Sticky packet means that there is no clear boundary between data and data, resulting in incorrect reading of data The application cannot directly operate the hardware. If the application wants to send data, it must hand over the data to the operating system, and the operating system needs to provide data transmission s ...

Posted on Sat, 16 Oct 2021 18:21:06 -0400 by su1d

Socket: datagram socket

1. What is a datagram socket A socket, or socket, is a communication mechanism by which a client/server (that is, a process to communicate)The system can be developed either locally on a single machine or across a network. That is, it allows processes that are not on the same machine but are connected over a network to communicate. Becaus ...

Posted on Tue, 12 Oct 2021 14:01:27 -0400 by MarineX69

Linux Log System

Sharp tools make good work. preface A professional log system is required for the debugging and maintenance of the server 1, Log system architecture linux provides a daemon to process the system log - syslogd, which is basically rsyslogd. The rsyslogd daemon can receive both user output logs and kernel logs. The user process gen ...

Posted on Wed, 06 Oct 2021 23:43:15 -0400 by RadiationHazard

ESP-IDF teaching WiFi of ESP32 -- TCP communication of LwIP

This article comes from the secondary column WiFi and Lwip protocol stack on ESP32 under the original column ESP32 teaching column (based on ESP-IDF), which explains how to use ESP-IDF to build ESP32 programs, publish articles and continue to add new content to published articles! Every article has been finely polished! ↓↓↓ ente ...

Posted on Sat, 02 Oct 2021 14:24:54 -0400 by IG88