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1. The longest chain that a number pair can form 646. Longest number pair chain (Medium) Method 1: greedy algorithm Sort all pairs according to the size of the second number. The first step is to select the pair with the smallest ending number. Then, each step selects the number that does not conflict with the last selected number pair and ...

1, Preparatory knowledge 1. Understand source IP address and destination IP address There are two IP addresses in the IP packet, one is the source IP address and the other is the destination IP address. IP address is responsible for transmitting data from one host hardware to another host hardware. IP address identifies the uniqueness of the ...

Hello, I'm brother Tao. Today, let's talk about the recv function in TCP network programming. As we know, recv is a blocking function. When no data is received, it will wait for the data foolishly. So, how to make the recv function have a little temper instead of waiting foolishly? The select function can be on top. Next, let's practice and d ...

paramiko module Introduction: paramiko is a module for remote control. Using this module, you can operate commands or files on the remote server. It is worth mentioning that the remote management inside fabric and ansible is realized by using paramiko. 2. Download and install pip3 install paramiko #In Python 3 In python2 pycrypto，beca ...

Add fixed IP to Ubuntu instance of multipass Multipass is a VM software discovered the day before yesterday. It is similar to Docker, but it feels that the instructions are relatively simple to use. The startup speed is much faster than Vmware, so Vmware, which has been used for many years, is abandoned. Recently, I found that many things, if ...

Introduction to webrtc Chapter 4 data channel 1, Introduction In the process of realizing end-to-end connection in webrtc, in addition to transmitting media stream, it can also transmit text, files, pictures and other data. It is also practical in IM scenarios, and does not need third-party message services, such as websocket, transparent mes ...

1. UDP search IP and port Implementation principle: in a LAN, you don't know the IP address of the server, but only the UDP Port common to the server. In this case, you want to realize the TCP connection. TCP is a point-to-point connection, so you need to know the connection IP address and Port of TCP. How to get the IP and Port of TCP? It ca ...

netty(3) – stick pack and half pack problem What is TCP sticky packet and half packet? Suppose the client sends two data packets D1 and D2 to the server respectively. Since the number of bytes read by the server at one time is uncertain, there may be the following four situations. The server reads two independent data packets, D1 an ...

1, Foreword Through the previous study, we are familiar with capturing packets from the network card. Now we will learn how to process packets. WinPcap provides us with many API s to save packets flowing through the network to a heap file and read the contents of the heap. The format of this file is very simple, but it contains the binary cont ...

Java Programming Network Programming TCP Programming Complete the development of TCP programs using Socket s Use this class to easily establish a reliable, two-way, continuous, point-to-point communication connection In Socket development, the server side uses ServerSocket to wait for the client to connect. For Java network programs, each cl ...