import java.net.*;
import java.io.*;

public class SocketServer {
    public static void main(String[] args) {
        ServerSocket sock = null;
        Socket client = null;
        try {
            sock = new ServerSocket(6017);
            client = sock.accept();
            DataInputStream inputStream = new DataInputStream(client.getInputStream());
            DataOutputStream outputStream = new DataOutputStream(client.getOutputStream());
            while (true) {
                try {
                    String message = inputStream.readUTF();
                    System.out.println("Client: " + message);
                    outputStream.writeUTF(message);
                } catch (IOException e) {
                    if (e.getMessage().equals("null")) {
                        break;
                    }
                }
            }
            inputStream.close();
            outputStream.close();
            client.close();
            sock.close();
        }
        catch (IOException ioe) {
            try {
                sock.close();
                client.close();
            } catch (IOException e) {}
            System.err.println(ioe);
        }
    }
}