def get_initial_acl(self):
return None<EOL>
ACL system: If you define this function, you must return
        all the 'event' names that you want your User (the established
        virtual Socket) to have access to.

        If you do not define this function, the user will have free
        access to all of the ``on_*()`` and ``recv_*()`` functions,
        etc.. methods.

        Return something like: ``set(['recv_connect', 'on_public_method'])``

        You can later modify this list dynamically (inside
        ``on_connect()`` for example) using:

        .. code-block:: python

           self.add_acl_method('on_secure_method')

        ``self.request`` is available in here, if you're already ready to
        do some auth. check.

        The ACLs are checked by the :meth:`process_packet` and/or
        :meth:`process_event` default implementations, before calling
        the class's methods.

        **Beware**, returning ``None`` leaves the namespace completely
        accessible.

        The methods that are open are stored in the ``allowed_methods``
        attribute of the ``Namespace`` instance.