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 +"].");
	}
	PropertyConfigurator.configure(configFile);
	NDC.push("Server");
}

 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 SocketNode2(socket)).start();
	  }
	}
	catch(Exception e) {
	  e.printStackTrace();
	}
}

 static  void usage(String msg) 
{
	System.err.println(msg);
	System.err.println(
	  "Usage: java " + SocketServer2.class.getName() + " port configFile");
	System.exit(1);
}