import java.io.*;

import java.net.*;

​

public class Server {

    public static void main(String[] args) {

        try {

            ServerSocket serverSocket = new ServerSocket(8080);

            System.out.println("Server started. Waiting for client connection...");

​

            Socket socket = serverSocket.accept();

            System.out.println("Client connected.");

​

            ObjectInputStream in = new ObjectInputStream(socket.getInputStream());

            ObjectOutputStream out = new ObjectOutputStream(socket.getOutputStream());

​

            int windowSize = in.readInt();

            int numFrames = in.readInt();

            String[] frames = (String[]) in.readObject();

​

            System.out.println("Sliding Window ARQ Protocol initiated on the server side.");

            System.out.println("Window size: " + windowSize);

            System.out.println("No. of frames: " + numFrames);

​

            for (int i = 0; i < numFrames; i++) {

                System.out.println("The received Frame " + i + " is: " + frames[i]);

            }

​

            int ackNumber = numFrames;

            out.writeInt(ackNumber);

            out.flush();

​

            System.out.println("Acknowledgement number: " + ackNumber);

​

            in.close();

            out.close();

            socket.close();

            serverSocket.close();

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}