import java.net.*;
import java.io.DataInputStream;
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.util.Scanner;



class MyServer
{
    // Your program begins with a call to main().
    // Prints "Hello, World" to the terminal window.

	MyServer(int port)
	{

        Scanner scanner = new Scanner(System.in);
		try {
        // System.out.println("Hello, World");
    	ServerSocket server = new ServerSocket(port);


        System.out.print("Username is: ");
        String userName = scanner.nextLine();
        // String sentname;

    	System.out.println("Waiting to connect...");
    	Socket s = server.accept();
        // System.out.println("Username is: " + userName);

    	System.out.println("Connected");
    	// System.out.println("Connected");

    	DataInputStream incoming = new DataInputStream(s.getInputStream());

    	DataOutputStream outgoing = new DataOutputStream(s.getOutputStream());


        outgoing.writeUTF(userName);
        outgoing.flush();
        String sentname = incoming.readUTF();

        while(true)
        {

    	String send, received;

        //THIS NEEDS TO BE TAKEN INPUT
        send = scanner.nextLine();



        // CLOSE BUTTON PRESS
        if ( send.equals("close"))
        {

            System.out.println("Server Closed");
            incoming.close();
             outgoing.close();
            s.close();
        }

    	outgoing.writeUTF(send);
    	outgoing.flush();


        // THIS NEEDS TO BE SEEN ON THE SCREEN
        System.out.println(userName + ": " + send);

        received = incoming.readUTF();

        // THIS NEEDS TO BE SEEN ON THE SCREEN
        System.out.println(sentname + ": " + received);
        // if()


        }


    	// outgoing.flush();





    	// System.out.println("Hello");
    	} catch(Exception e){}
	}


    public static void main(String args[])
    {
    	MyServer s = new MyServer( (Integer.parseInt(args[0]) ) );
    }
}