network service protocol

) Reduce the complexity, make the program easier to modify, product development faster. (5) Each layer uses the adjacent lower level service, it is easier to remember the function of the layer. Most computer networks use a hierarchical structure, a computer network is divided into several levels, at a high-level system is only the use of lower levels of the system provided by the interface and functions, d

DHCP (Dynamic Host Configuration Protocol) is a LAN protocol that uses UDP to work with two main purposes: assigning an IP address to an internal network or network service provider automatically, For users or internal network adm

For some protocol analysis, we can use the power of some software. Here we will explain the WinPCap and computer network protocols. Let's take a look at the working principle of WinPCap: System Development and Application WinPcap supports information packet capture and network analysis on the Win32 platform. Its main idea is derived from the most famous packet In

Internet ProtocolI. OverviewThere are different models for layering, some models are divided into seven layers, and some are divided into four layers. Here is the introduction of the Internet into five layers.The bottom layer is called the "Physical layer" (physical layer), the topmost layer is called the "Application Layer" (Application layer), the middle layer three (bottom-up) is the "link layer", "Network layer" Layer), and the transport layers (T

└── helloworld.proto Let's take a look at the protocol file first. Helloworld.proto has some changes, introducing Google's official API-related extensions, which provide support for the GRPC HTTP conversion. The specific changes are as follows: syntax = "proto3";option java_multiple_files = true;option java_package = "io.grpc.examples.helloworld";option java_outer_classname = "HelloWorldProto";package helloworld;import "google/api/annotati

Android Network Programming (I) HTTP protocol PrinciplePreface This article is the beginning of this series. As a mobile developer, the developed applications will inevitably access the network. Although there are already many open source libraries to help us easily access the network, however, we still need to underst

The most complete difference between network protocol-TCP and UDP is introduced Preface: In order to facilitate the late turn look, the public number in slowly finishing the article, about the Java Network Programming content of the article, can be viewed in the menu bar-article Finishing-advanced module. Basic differences between TCP and UDP1. Connection-based

Java Network Programming (2) InetAddress class and udp protocol, inetaddressudpInetAddress class JDK provides the java.net package for developing network applications. The classes and interfaces under this package are almost all network programming services. InetAddress: the object used to describe the IP address The I

will be sent encapsulated into the packet 4, the socket service via UDP to send data packets 5, close the socket service *///udpsocket service, Use the Datagramsocket object Datagramsocket ds=new datagramsocket (9999);//Listener port//The data to be sent is encapsulated in the packet//string str= "UDP transmission demo, go"; BufferedReader bufr=new BufferedReade

1. Obtain the SQL SERVER service startup status through the registry. It is the same as obtaining the startup status of other services. The method is to find the Start key value in the Registry: HK_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ {service name. The value indicates: 2 indicates Automatic) 3 indicates Manual) 4 indicates disabled (Diabled) 2. Get or set the startup status of

protocols (voltage, light intensity, coding, Signal Waveforms) Mechanical protocols (dimensions, metallic composition of wires) Functional protocols (description of what to do) procedural protocols (describes how to do such: 1 indicates the voltage is less than-3 V) TCP protocol Explanation Transmission Control Protocol (TCP): a reliable connection-oriented service