protected void recvLoop(DatagramSocket socket, InetSocketAddress address) {
    long successful_accepts = 0;
    long failed_accepts = 0;

    while (!closed) {

      try {
        byte[] buf = new byte[PRUDPPacket.MAX_PACKET_SIZE];

        DatagramPacket packet = new DatagramPacket(buf, buf.length, address);

        socket.receive(packet);

        successful_accepts++;

        failed_accepts = 0;

        String ip = packet.getAddress().getHostAddress();

        if (!ip_filter.isInRange(ip, "Tracker", null)) {

          thread_pool.run(new TRTrackerServerProcessorUDP(this, socket, packet));
        }

      } catch (Throwable e) {

        if (!closed) {

          failed_accepts++;

          Logger.log(new LogEvent(LOGID, "TRTrackerServer: receive failed on port " + port, e));

          if ((failed_accepts > 100 && successful_accepts == 0) || failed_accepts > 1000) {

            // looks like its not going to work...
            // some kind of socket problem

            Logger.logTextResource(
                new LogAlert(LogAlert.UNREPEATABLE, LogAlert.AT_ERROR, "Network.alert.acceptfail"),
                new String[] {"" + port, "UDP"});

            break;
          }
        }
      }
    }
  }