Java socket server for flash

package sban.socketServer;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.URL;
/**
 * sban policy server for flex/flash socket
 *
 * @author sban
 *
 */
public class SbanSocketPolicyServer {
 public SbanSocketPolicyServer() {
 }
 public static String readFileAsString(String url)
   throws java.io.IOException {
  byte[] buffer = new byte[(int) new File(url).length()];
  BufferedInputStream f = new BufferedInputStream(
    new FileInputStream(url));
  f.read(buffer);
  f.close();
  return new String(buffer);
 }
 public static void main(String[] args) throws IOException {
  ServerSocket server = new ServerSocket();
  SocketAddress endpoint = new InetSocketAddress("127.0.0.1", 843);
  server.bind(endpoint);
  String path = SbanSocketPolicyServer.class.getResource( "crossdomain.xml" ).getPath();
  System.out.println(path);
  String policy = readFileAsString( path );
  while (true) {
   System.out.println("wait for client...");
   Socket socket = server.accept();
   BufferedReader in = new BufferedReader(new InputStreamReader(
     socket.getInputStream()));
   PrintWriter out = new PrintWriter(socket.getOutputStream());
   String s = in.readLine();
   System.out.println(s);
   if (s.indexOf("policy-file-request") > -1) {
    out.print(policy + '\0');
    out.flush();
    in.close();
    out.close();
    System.out.println("sended policy context.");
    socket.close();
   }
  }
 }
}


crossdomain.xml文件

<cross-domain-policy>
<site-control permitted-cross-domain-policies="all"/>
<allow-access-from domain="*" to-ports="*" />
</cross-domain-policy>