import java.net.Socket;
import java.net.UnknownHostException;
import java.net.ConnectException;
import java.io.*;

public class Flash843 {

    public static void main(String[] args) {

        if(args == null || args.length == 0 || args[0] == null || args[0].length() == 0) {
            usage();
        } else if("-h".equalsIgnoreCase(args[0]) || "/h".equalsIgnoreCase(args[0]) || "-?".equals(args[0]) || "/?".equals(args[0])) {
            usage();
        } else {

            int port = 843;
            if(args.length > 1) {
                try {
                    port = Integer.parseInt(args[1]);
                } catch(NumberFormatException nfe) {
                    port = 843;
                }
            }
            Socket socket = null;
            PrintWriter dataOut = null;
            BufferedReader dataIn = null;

            try {

                socket = new Socket(args[0], port);

                dataOut = new PrintWriter(socket.getOutputStream(), true);
                dataIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));

                dataOut.print("<policy-file-request/>\0");
                dataOut.flush();

                String line = dataIn.readLine();
                while(line != null) {
                    System.out.println(line);
                    line = dataIn.readLine();
                }

            } catch(UnknownHostException uhe) {
                System.out.println("Error: The specified host is unknown.");
            } catch(ConnectException ce) {
                System.out.println("Error: No server to connect to on that port.");
            } catch(IOException ioe) {
                System.out.println("Error:");
                ioe.printStackTrace();
            } finally {
                if(dataOut != null) {
                    dataOut.close();
                }
                if(dataIn != null) {
                    try {
                        dataIn.close();
                    } catch (IOException e) {
                        // do nothing
                    }
                }
                if(socket != null) {
                    try {
                        socket.close();
                    } catch (IOException e) {
                        // do nothing
                    }
                }
            }
        }
    }


    private static void usage() {
        System.out.println("");
        System.out.println("Usage:");
        System.out.println("  java Flash843 (-h | /h | -? | /?) | (ipaddress [port])");
        System.out.println("");
        System.out.println("where");
        System.out.println("  -h, /h, -?, /? - outputs this usage information");
        System.out.println("  ipaddress      - (required) the IP address to connect to");
        System.out.println("  port           - (optional) the port number to connect to (defaults to 843)");
        System.out.println("");
        System.out.println("For example: java Flash843 localhost 843");
        System.out.println("");
    }

}