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socket network programming based on TCP protocol 1, What is socket 1. Introduction: After understanding the osI seven layer protocol, we can see that there is a socket abstraction layer between the application layer and the transport layer. The abstraction layer here does not exist in the osI seven layer protocol. The socket abstraction ...

Product to be tested: server_linux (random name) Server: linux, 1-core 2G Steps: 1. Connect the local server_ Put the Linux package on the server #Install lrzsz first ubuntu@VM-0-12-ubuntu:~$ sudo apt install lrzsz Reading package lists... Done Building dependency tree Reading state information... Done lrzsz is already the newest ver ...

1, Target Previously introduced Public network ip update scheme of android real machine signature However, many friends left a message saying that there is no public ip in their ADSL, so they can't play. To solve this problem, another solution is to use frp intranet penetration, but it is not very stable in the actual use process. sekiro, wh ...

subject Regular Expression Matching Give you a string s and a character rule p, please implement a support '.' Matches the regular expression of '*'. ‘.’ Match any single character '*' matches zero or more preceding elements The so-called matching is to cover the whole string s, not part of the string. Example 1: Input: s = &q ...

Key points of the fourth course of C language (1) : review pointer size: the pointer size can only be 4 bytes (32b) in x86 and 8 bytes (64b) in x64. Because the pointer stores the first address. (2) struct: a new type is designed and designed by the program developer. struct student { };//Semicolon required struct student { char s_id[10 ...

1.Spring Configuration Data Source 1.1 Role of data sources (connection pools) Data sources (connection pools) are available to improve program performance Pre-instantiate the data source to initialize partial connection resources Get from data source when using connection resources Return the connected resource to the data source after us ...

preface As we all know, at the end of last year, jsdelivr, a well-known free CDN service provider, had no domestic CDN acceleration due to the problem of domain name filing in the mainland. At present, it can only be parsed overseas, which is not only slow, but also occasionally unable to connect to the server. Therefore, many domestic website ...

Summary of design patterns involved in Spring Simple factory implementation: BeanFactory. BeanFactory in Spring is a reflection of simple factory mode, which obtains Bean objects by passing in a unique identity, but whether this is created after or before the parameter is passed in depends on the situation.Factory method implementation: Factor ...

Serial GC Article Starting Public Number: Java Architect Consortium, Daily Update of Technical Good Text Weak Generation Hypothesis Serial GC is the most classic and oldest garbage collector, opened with -XX:+UseSerialGC. Its Java heap conforms to the Weak Generational Hypothesis. The implication of the weak generation hypothesis is that mos ...

3. Common sorting algorithms   learning objective: master common sorting algorithms.   introduction to algorithm: Sort   / / sort the elements in the containerrandom_shuffle    / / shuffle and randomly adjust the order of elements within the specified rangeMerge   / / merge container elements and store them ...