How to use the websockify.websockifyserver.WebSockifyServer function in websockify

def _get_server(self, handler_class=websockifyserver.WebSockifyRequestHandler,
                    **kwargs):
        return websockifyserver.WebSockifyServer(
            handler_class, listen_host='localhost',
            listen_port=80, key=self.tmpdir, web=self.tmpdir,
            record=self.tmpdir, **kwargs)

self.print_traffic(".>")


            if target in ins:
                # Receive target data, encode it and queue for client
                buf = target.recv(self.buffer_size)
                if len(buf) == 0:
                    if self.verbose:
                        self.log_message("%s:%s: Target closed connection",
                                self.server.target_host, self.server.target_port)
                    raise self.CClose(1000, "Target closed")

                cqueue.append(buf)
                self.print_traffic("{")

class WebSocketProxy(websockifyserver.WebSockifyServer):
    """
    Proxy traffic to and from a WebSockets client to a normal TCP
    socket server target.
    """

    buffer_size = 65536

    def __init__(self, RequestHandlerClass=ProxyRequestHandler, *args, **kwargs):
        # Save off proxy specific options
        self.target_host    = kwargs.pop('target_host', None)
        self.target_port    = kwargs.pop('target_port', None)
        self.wrap_cmd       = kwargs.pop('wrap_cmd', None)
        self.wrap_mode      = kwargs.pop('wrap_mode', None)
        self.unix_target    = kwargs.pop('unix_target', None)
        self.ssl_target     = kwargs.pop('ssl_target', None)
        self.heartbeat      = kwargs.pop('heartbeat', None)

def get_logger():
        return logging.getLogger("%s.%s" % (
            WebSockifyServer.log_prefix,
            WebSockifyServer.__class__.__name__))

# Retrieve a few configuration variables from the server
        self.only_upgrade = getattr(server, "only_upgrade", False)
        self.verbose = getattr(server, "verbose", False)
        self.daemon = getattr(server, "daemon", False)
        self.record = getattr(server, "record", False)
        self.run_once = getattr(server, "run_once", False)
        self.rec        = None
        self.handler_id = getattr(server, "handler_id", False)
        self.file_only = getattr(server, "file_only", False)
        self.traffic = getattr(server, "traffic", False)
        self.web_auth = getattr(server, "web_auth", False)
        self.host_token = getattr(server, "host_token", False)

        self.logger = getattr(server, "logger", None)
        if self.logger is None:
            self.logger = WebSockifyServer.get_logger()

        SimpleHTTPRequestHandler.__init__(self, req, addr, server)