Java演示TCP 3次握手与 4次分手_java代码表达分手-优快云博客

本文通过一个简单的Java示例介绍了TCP的三次握手和四次挥手过程。客户端和服务端通过Socket API实现连接和断开，使用Wireshark抓包工具展示了整个交互流程。

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啥都不说，先上代码。
服务端：

package com.ghs.test;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class TCPServerSocket {
    private static ServerSocket serverSocket;
    private static Socket socket;

    public static void startServerSocket(int bindPort) {
        try {
            serverSocket = new ServerSocket(bindPort);
            while(true){
                socket = serverSocket.accept();
                System.out.println("连接的客户端地址和端口为:" + socket.getRemoteSocketAddress());
                socket.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        startServerSocket(6000);
    }
}

客户端：

package com.ghs.test;

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class TCPClientSocket {

    private static Socket socket;

    /**
     * 是否主动发起关闭
     */
    private static boolean isLaunchClose=true;

    /**
     * 建立socket连接
     * 
     * @param bindIp
     * @param bindPort
     */
    public static void connectServerSocket(String bindIp, int bindPort) {
        try {
            socket = new Socket(bindIp, bindPort);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 关闭socket连接
     */
    public static void closeSocket(){
        try {
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        int bindPort = 6000;
        String bindIp = "192.168.1.36";
        connectServerSocket(bindIp, bindPort);
        if(!isLaunchClose){
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        closeSocket();
    }
}