Socket policy server for Flash

package FlashServer;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class PolicyServer extends Thread {
    private int _port;
    private boolean _listening;
    private ServerSocket _socketServer;

    public PolicyServer(int port_, String[] allowedHosts_)
    {
        _port = port_;
        _listening = true;
        if (allowedHosts_ == null)
            allowedHosts_ = MainServer.DEFAULT_POLICY;
        buildPolicy(allowedHosts_);
    }

    public String buildPolicy(String[] allowedHosts_)
    {
        StringBuffer policyBuffer = new StringBuffer();

        policyBuffer.append("<?xml version=\"1.0\"?><cross-domain-policy>");

        for (int i = 0; i < allowedHosts_.length; i++)
        {
            String[] hostInfo = allowedHosts_[i].split(":");
            String hostname = hostInfo[0];
            String ports;
            if (hostInfo.length > 1)
                ports = hostInfo[1];
            else
                ports = "*";

            policyBuffer.append("<allow-access-from domain=\"" + hostname + "\" to-ports=\"" + ports + "\" />");
        }
        policyBuffer.append("</cross-domain-policy>");

        return policyBuffer.toString();
    }

    public void run()
    {
        try
        {
            _listening = true;
            _socketServer = new ServerSocket(_port, 50);
            if (MainServer.DEBUG)
                System.out.println("PolicyServer listening on port " + _port);

            while (_listening)
            {
                Socket socket = _socketServer.accept();

                try
                {
                    if (MainServer.DEBUG)
                        System.out.println("PolicyServer got a connection on port " + _port);
                    (new SocketConnection(socket)).start();
                }
                catch (Exception e)
                {
                    if (MainServer.DEBUG)
                        System.out.println("Exception: " + e.getMessage());
                }
                try
                {
                    sleep(1000);
                }
                catch (InterruptedException e)
                {
                }
            }
        }
        catch (IOException e)
        {
            if (MainServer.DEBUG)
                System.out.println("IO Exception: " + e.getMessage());
        }
    }
}