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Preamble Introduction When we implement the RPC framework, we need to choose how sockets communicate.And we know that socket communication is similar to qq chatting in general, sending messages in the past and replying whenever possible.But our RPC ...

Functional requirements: 1. Each time the main function is run, a client chat interface is created. 2. The client interface is divided into three parts: the public screen (displaying all the information sent by the client), the private screen (for inputting the information that the individual wants to send), and the sending button (clicking o ...

Catalog I. Multiple Processes of Concurrent Programming 1. Introduction of multiprocessing module 2. Introduction of Process Class 3. Use of Process Class 3.1 Two ways to create sub-processes 3.2 Getting process pid 3.3 Spatial isolation between validation processes 3.4 join Method fo ...

Define a command alias that works for all usersFor example: lftps='lftp 172.168.0.1/pub' [root@localhost /]# echo "alias lftps='lftp 172.168.0.1/pub'" >> /etc/bashrc [root@localhost /]# source /etc/bashrc [root@localhost /]# alias alias cp='cp -i' alias egrep='egrep --color=auto' alias fgrep='fgrep --color=auto' alias grep='grep --col ...

1. course 1. Two ways of process creation The first way to start the process is: from multiprocessing import Process import random import time def task(name): print(f'{name} is running') time.sleep(random.randint(1, 3)) print(f'{name} is gone') if __name__ == '__main__': # In windows environment, the opening process must be u ...

Version 1 CentOS 7.5 zookeeper-3.4.12 kafka _2.12-1.1.0 II. zookeeper Installation 1. Download and decompress zookeeper compression package   tar -zvxf zookeeper-3.4.12.tar.gz   2. Creating Data and Log Folders mkdir /usr/local/zookeeper-3.4.12/data mkdir /usr/local/zookeeper-3.4.12/logs 3. Copy configuration files Go to th ...

package com.itheima.demo02.FileUpload; import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.Socket; /* Client of file upload case: read local file, upload to server, read data written back by server To make clear: Data source: c:\1.jpg Destination: Server Imp ...

Introduction to socket 1. How to communicate between processes on different computers The first problem to be solved is how to uniquely identify a process, otherwise communication can not be started! On a computer, a process can be uniquely ident ...

Idea: Client first receives data from keyboard, then converts it into output stream, then into print stream, sends it in security, receives data from server, reads it by line, and finally closes input and output, releases resources. The server receiv ...

Finally, we're in the analysis phase of Connector, which is one of Tomcat's most complex features.Connector is named connector in Chinese. Since it is a connector, it will certainly connect something. What do you want to connect? Connectors are used to accept requests and encapsulate them as Request s and Response s, which are then handled ...