// 伺服器端程式碼 ----------------------------------------------------------------------------------------
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
public class UDPServer {
public static void main(String[] args) throws Exception {
byte[] buffer = new byte[65507];
DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
DatagramSocket ds = new DatagramSocket(80); // Set Server Port
System.out.println("伺服器啟動於 : "
+ InetAddress.getLocalHost().getHostAddress() + ":" + ds.getLocalPort());
String msg = "No Message...";
while (true) {
ds.receive(dp);
msg = new String(dp.getData(), 0, dp.getLength());
System.out.println("傳來的訊息 : " + msg);
}
}
}
// 客戶端程式碼 ------------------------------------------------------------------------------------------
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.util.Scanner;
public class UDPClient {
public static void main(String[] args) throws Exception {
DatagramPacket dp;
Scanner s = new Scanner(System.in);
System.out.println("請輸入要傳送的訊息 : ");
String msg = "Key in";
while (true) {
msg = s.next();
dp = new DatagramPacket(
msg.getBytes(), msg.getBytes().length, InetAddress.getByName("114.47.81.209"), 80);
new DatagramSocket().send(dp);
}
}
}
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