服務端

import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetSocketAddress;public class Server {public static void main(String[] args) {try {InetSocketAddress localAddress = new InetSocketAddress("127.0.0.1", 6000);DatagramSocket serverSocket = new DatagramSocket(localAddress);byte[] data = new byte[1024];while (true) {DatagramPacket packet = new DatagramPacket(data, data.length);serverSocket.receive(packet);System.out.println(new String(packet.getData()));}} catch (IOException e) {e.printStackTrace();}} }

客戶端

import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetSocketAddress;public class Client {public static void main(String[] args) {try {InetSocketAddress remoteAddress = new InetSocketAddress("127.0.0.1", 6000);DatagramSocket clientSocket = new DatagramSocket();clientSocket.setSoTimeout(3000);byte[] data = "hello world\n".getBytes();DatagramPacket packet = new DatagramPacket(data, data.length, remoteAddress);int n = 10;while (n-- != 0) clientSocket.send(packet); // 發包 // byte[] backData = new byte[1024]; // DatagramPacket backPacket = new DatagramPacket(backData, backData.length); // clientSocket.receive(backPacket); // 收包 // clientSocket.setSoTimeout(0); // 取消超時時間 // System.out.println(new String(backData));clientSocket.close();clientSocket.disconnect();} catch (IOException e) {e.printStackTrace();}} }

總結

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