Programming VIP

catalogue View network configuration Test network connection Using the network configuration command Modify network profile summary View network configuration View network interface information ifconfig View host name hostname View the route table entry route View network connectivity netstat Get socket statistics ss Test network co ...

Java stream Before network programming, we must understand how important streaming is to Java. We can store and read files through streams, and also transmit network data through streams. There is no concept of pointer in Java. We know that in C language, it regards all abstract concepts such as screen and keyboard as files, corresponding ...

Android network framework -- OkHttp source code analysis This article is based on Kotlin language Previous article: Analysis of OkHttp source code of Android network framework (1) -- request process After explaining the request process of OkHttp, this article enters the second part - OkHttp interceptor analysis. Interceptor analysis of ...

Kernel Objects definition Resources created and managed by Windows operating system, including processes, threads, files, semaphores, mutexes, etc. Different resource management methods are different. File management, register and update file related data I/O Location, file open mode (read or write), etc.Thread management, register and ...

catalogue 1, Experimental environment 2, Experimental requirements 3, Experimental steps 1. Reasonably divide network segments 2. Configure the specific network segment address          3. Configure MGRE structure of R1, R4 and R5          4. Configure MGRE structure of R1, R2 and R3 5. Manually write a default route to the isp 6. Turn ...

1, Docker container operation 1. Container creation The process of loading a mirror into a container. The newly created container is stopped by default and does not run any program. A process needs to be initiated to start the container format∶docker create [option] Common options for mirroring∶ -i∶Keep the input of the container open ...

Channel classification in Java NIO: FileChannelSocketChannelServerSocketChannelDatagramChannel FileChannel: it is mainly used for reading and writing files. You can read files from disk or write files to disk. SocketChannel: used for data reading and writing of Socket TCP connection. You can read data from the Channel or write data to the C ...

DHCP belongs to application layer protocol port 67 server 68 client UDP How DHCP works Understanding DHCP services DHCP(Dynamic Host Configuration Protocol)Designed and developed by lnternet task forceA protocol designed to automatically assign TCP/IP parameters to computers in a TCP/IP network Benefits of using DHCP Reduce administrat ...

preface In a word, Google DNS 8.8.8.8 will truncate the packet length of Ping response, and there will be different results on the system, but Wireshark packet capture results will show that Ping is not responding. ​ 163 example Start with www.163 Com as an example, Windows defaults to Ping, and the data length is 32. $ ping www.163.com I ...

1. Network planning 1.1 network topology 1.2 network planning Overall planning: the company is headquartered in Beijing and has branches in Shanghai and Guangzhou, which are connected to the headquarters through special lines. It is assumed that the internal and external network segments are planned as follows. Department Network: V ...