static  void init(String host,
    String portStr) 
{
    Logger root = Logger.getRootLogger();
    BasicConfigurator.configure();
    try {
      int port   = Integer.parseInt(portStr);
      cat.info("Creating socket appender ("+host+","+port+").");
      s = new SocketAppender(host, port);
      s.setName("S");
      root.addAppender(s);
    }
    catch(java.lang.NumberFormatException e) {
      e.printStackTrace();
      usage("Could not interpret port number ["+ portStr +"].");
    }
    catch(Exception e) {
      System.err.println("Could not start!");
      e.printStackTrace();
      System.exit(1);
    }
}

 static  void loop() 
{
    Logger root = Logger.getRootLogger();
    InputStreamReader in = new InputStreamReader(System.in);
    System.out.println("Type 'q' to quit");
    int i;
    int k = 0;
    while (true) {
      cat.debug("Message " + k++);
      cat.info("Message " + k++);
      cat.warn("Message " + k++);
      cat.error("Message " + k++, new Exception("Just testing"));
      try {i = in.read(); }
      catch(Exception e) { return; }
      if(i == -1) break;
      if(i == 'q") break;
      if(i == 'r") {
	System.out.println("Removing appender S");
	root.removeAppender("S");
      }
    }
}

 public static  void main(String[] argv) 
{
  
    if(argv.length == 3)
      init(argv[0], argv[1]);
    else
      usage("Wrong number of arguments.");
    NDC.push("some context");
    if(argv[2].equals("true"))
      loop();
    else
      test();
    s.close();
}

 static  void test() 
{
    int i  = 0;
    cat.debug( "Message " + i++);
    cat.info( "Message " + i++);
    cat.warn( "Message " + i++);
    cat.error( "Message " + i++);
    cat.log(Priority.FATAL, "Message " + i++);
    cat.debug("Message " + i++,  new Exception("Just testing."));
}

 static  void usage(String msg) 
{
    System.err.println(msg);
    System.err.println("Usage: java " + SocketMin.class
		       + " host port true|false");
    System.exit(1);
}