Programmer Group

At the xman summer camp, the big man brought us cryptography courses. Among them, the random number part feels deeply and records several scripts. 1. Time as the Random Number of Seeds https://www.jarvisoj.com/ [xman 2019] babyrpd Server-side code 1 class Unbuffered(object): 2 def __init__(self, stream): 3 self.stream = str ...

I. Essence of Web Framework All Web applications are essentially a socket server, and the user's browser is a socket client. II. Web Framework Function socket sends and receives messages - wsgiref (test), uwsgi (online) Returns different strings according to different paths Return dynamic pages (string substitution) - jin ...

Implementing FTP File Transfer in Terminal Code structure: .├── client.py├── readme.txt└── server.py Operating screenshots:   readme.txt tftp file server Project function: * The client has a simple page command prompt * Functions include: 1. View the File List (Ordinary File) in the Server File Library - > os. ...

Java's network concept is not distinguished by the host, but by the process. JVM helps to solve the network transmission without our consideration. Although JVM helps users hide the original information of the network, some operations are left to users. There are two kinds of network connections: TCP ...

Preface Now there are many examples of using Netty to build RPC framework on the Internet. Why do I write an article here to discuss it? I know very well that I may not have written them so well. There are two reasons why we should write about it: First, because after learning Netty, we need to practice constantly to better grasp the use of Ne ...

Default adapter axios/lib/adapters/http.js The core is the http(s).request method of nodejs to make requests var utils = require('./../utils'); var settle = require('./../core/settle'); var buildFullPath = require('../core/buildFullPath'); var buildURL = require('./../helpers/buildURL'); var http = require('http'); var https = require('https'); ...

This code is based on the Linux Epoll mechanism, using socket fd identifier to establish the linked list and the corresponding buffer. tpack.h #ifndef TPACK_H_ #define TPACK_H_ #include "define.h" // Communication Packet Structure #Define TPACK_HEAD_SIZE 512// Header information set to ...

Configuration details: HAPrpxy configuration file: / etc/haproxy/haproxy.cfg It consists of two parts: global and proxies. global: global configuration segment Process and security configuration-related parameters Performance tuning related parameters Debug parameter proxies: Proxy configuration ...

What is NIO?New IO, which started in Java 1.4, provides a new non-blocking Java IO operation API.Non-Blocking IOInstead of the old version of Blocking IO, it is mostly used for network-related API s. Why use NIO?After using NIO, the performance of WEB network program can be further improved.Simulate Tomcat 7, block IO to process Http requests: ...

How to control the running state of the service? How to switch different levels of operation? service control ntsysv Imitating graphical interactive interface, centralized configuration of various service startup status level 35: Manage services at the specified runlevel, not just at the current runlevel. [root@localhost ~]# ntsysv --level ...