code: private static boolean isAPortOffset(int offset) {
      return (offset == STANDARD_ASCII_PORT_OFFSET)
                     || (offset == STANDARD_HTTP_PORT_OFFSET)
                     || (offset == STANDARD_SERVLET_PORT_OFFSET)
                     || (offset == STANDARD_CFASL_PORT_OFFSET);
    }
docs: Tests whether an int is a known port offset.
  
  @param offset
  
  @return