Programmer Think

catalogue 1, There are two main problems in network programming: 2, Two elements in network programming: 3, Communication element 1: IP and port number 4, Realize TCP network programming Example 1: the client sends information to the server, which displays the information on the console. Example 2: the client sends a file to the server, w ...

To realize user state protocol stack, we must understand TCP, 11 states of TCP, sliding window, congestion control, timer and so on. To use the user state protocol stack, the epoll provided by the kernel will not work. We need to implement the user state epoll ourselves. Epoll involves a callback opportunity. The callback function is to add th ...

Regular expression OverviewRegular expression defines the pattern of string, which can be used to search, edit and process text. It is not limited to one language, but there will be subtle differences in each language jdk1 4 launch regular expressions and save them in Java util. Regex packageGrammar Metacharacter describe \ Mark the ...

summary When using crawlers, most websites have certain anti crawling measures. Some websites will limit the access speed or access times of each IP. If you exceed its limit, your IP will be blocked. The processing of access speed is relatively simple. It only needs to crawl once at an interval to avoid frequent access; For the number of v ...

1, Demand analysis At present, there are a lot of information about the principle and mechanism of KCP and the implementation of various versions of KCP on the Internet. I did the KCP correlation analysis of two articles before, which are the principle mechanism and performance testing practice. Our current project is a game with high real-tim ...

preface This article is not about http Net package, which only introduces the traditional network communication (the http.net package will be updated separately later) 1, Hierarchy of the Internet It is roughly divided into four layers. If subdivided, it can be divided into seven layers 1. Application layer Application layer, prese ...

Understanding the asynchronous notification I/O model Synchronous and asynchronous The key of synchronization is the call and return time of function, as well as the start and completion time of data transmission. Data transmission starts at the moment when the send function is called, and the data transmission is completed at the moment ...

1. Preface Steps: analyze Android global Java obfuscator, analyze TCP private protocol, and write socket script to realize data capture The analyzed app is here https://wwo.lanzouy.com/ifKPbytn9mh password:fhj0 This analysis process is limited to learning and use. Do not use it for illegal purposes. If the reader uses it for illegal purpo ...

** introduction ** TCP/IP communication (i.e. SOCKET communication) is the communication established through TCP/IP protocol on the basis of following the four-tier architecture of ISO/OSI model by connecting the Server end of the Server and the Client end of the Client through the network cable. The controller can be set as Server or Client. ...

TCP three handshakes and four waves Quoted articles: (32 messages) the whole process of tcp three handshakes and four handshakes and why three handshakes_ Rock owl blog - CSDN blog_ tcp the whole process of three handshakes and four waves https://blog.csdn.net/spade_Kwo/article/details/119464901 What is TCP protocol? TCP It is a host ...