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

public class TestServer
{
	public int PORT = 9000;

	public static void main(java.lang.String args[])
	{
		new TestServer();
	}
	
	public TestServer()
	{
		try {
			ServerSocket serverSock = new ServerSocket(PORT);
			Socket clientSock;
			BufferedReader in;     // i/o for the server
			PrintWriter out;
	
			while (true) {
				System.out.println("Waiting for a client...");
				clientSock = serverSock.accept( );
				System.out.println("Client connection from " + clientSock.getInetAddress( ).getHostAddress( ) );
		
				// Get I/O streams from the socket
				in  = new BufferedReader(  new InputStreamReader(clientSock.getInputStream( ) ) );
				out = new PrintWriter( clientSock.getOutputStream( ), true );
	
				processClient(in, out); // interact with a client

				// Close client connection
				//clientSock.close( );
				//System.out.println("Client connection closed\n");
			}
		} catch(Exception e) {  System.out.println(e);  }
	}
	
	private void processClient(BufferedReader in, PrintWriter out)
    {
		String line;
		boolean done = false;
		try {
			while (!done) {
				if((line = in.readLine( )) == null)
					done = true;
				else {
					System.out.println("Client msg: " + line);
					if (line.trim( ).equals("bye"))
						done = true;
					else
						doRequest(line, out);
				}
			}
		} catch(IOException e) {  System.out.println(e);  }
    }
	
	private void doRequest(String line, PrintWriter out)
	{
		out.println(line);
	}
}