static  void init(String portStr,
    String configFile) 
{
    try {
      port = Integer.parseInt(portStr);
    } catch(java.lang.NumberFormatException e) {
      e.printStackTrace();
      usage("Could not interpret port number ["+ portStr +"].");
    }
    if(configFile.endsWith(".xml")) {
      DOMConfigurator.configure(configFile);
    } else {
      PropertyConfigurator.configure(configFile);
    }
}

 public static  void main(String[] argv) 
{
  
    if(argv.length == 2) {
      init(argv[0], argv[1]);
    } else {
      usage("Wrong number of arguments.");
    }
    try {
      cat.info("Listening on port " + port);
      ServerSocket serverSocket = new ServerSocket(port);
      while(true) {
	cat.info("Waiting to accept a new client.");
	Socket socket = serverSocket.accept();
	cat.info("Connected to client at " + socket.getInetAddress());
	cat.info("Starting new socket node.");
	new Thread(new SocketNode(socket,
				  LogManager.getLoggerRepository())).start();
      }
    } catch(Exception e) {
      e.printStackTrace();
    }
}

 static  void usage(String msg) 
{
    System.err.println(msg);
    System.err.println(
      "Usage: java " +SimpleSocketServer.class.getName() + " port configFile");
    System.exit(1);
}