package simplejavaserver;

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

public class SimpleJavaServer extends Thread
{
    private ServerSocket serverSocket;

    public SimpleJavaServer(int port) throws IOException
    {
        serverSocket = new ServerSocket(port);
        //serverSocket.setSoTimeout(10000); // By commenting out the timeout the server will wait for the client forever!
    }

    public void run()
    {
        while(true)
        {
            try
            {
                // Let the user know we are waiting for a client
                System.out.println("Waiting for client on " + 
                        Inet4Address.getLocalHost().getHostAddress() + ":" + 
                serverSocket.getLocalPort() + "...");
                
                // Wait for a new client. Hang until a new one connects
                Socket server = serverSocket.accept();
                //DataInputStream in = new DataInputStream(server.getInputStream());
                BufferedReader din = new BufferedReader(new InputStreamReader(server.getInputStream()));
                DataOutputStream out = new DataOutputStream(server.getOutputStream());
                
                // Let the user know we have accepted a client
                System.out.println("Just connected to " + server.getRemoteSocketAddress());
                
                // Let the user know what the client sent
                System.out.print("Client: ");
                System.out.println(din.readLine());
                
                // Send the welcome message to the client
                System.out.println("Sending welcome messsage");
                out.writeChars("Thank you for connecting to " + server.getLocalSocketAddress() + "\nGoodbye!");
                
                // Close the connection the client so we can listen for new cients
                server.close();
            }catch(SocketTimeoutException s)
            {
                System.out.println("Socket timed out!");
                break;
            }catch(IOException e)
            {
                e.printStackTrace();
                break;
            }
        }
    }
    public static void main(String [] args)
    {
        int port = 6000;
        try
        {
            Thread t = new SimpleJavaServer(port);
            t.start();
        }catch(IOException e)
        {
            e.printStackTrace();
        }
    }
}