How to use the ipyparallel.util.disambiguate_url function in ipyparallel

sub = ctx.socket(zmq.SUB)
        sub.setsockopt(zmq.SUBSCRIBE, b"")
        sub.bind(self.monitor_url)
        sub.bind('inproc://monitor')
        sub = ZMQStream(sub, loop)

        # connect the db
        db_class = _db_shortcuts.get(self.db_class.lower(), self.db_class)
        self.log.info('Hub using DB backend: %r', (db_class.split('.')[-1]))
        self.db = import_item(str(db_class))(session=self.session.session,
                                            parent=self, log=self.log)
        time.sleep(.25)

        # resubmit stream
        r = ZMQStream(ctx.socket(zmq.DEALER), loop)
        url = util.disambiguate_url(self.client_url('task'))
        r.connect(url)

        self.hub = Hub(loop=loop, session=self.session, monitor=sub, heartmonitor=self.heartmonitor,
                query=q, notifier=n, resubmit=r, db=self.db,
                engine_info=self.engine_info, client_info=self.client_info,
                log=self.log, registration_timeout=self.registration_timeout,
                parent=self,
                )

def maybe_tunnel(url):
            """like connect, but don't complete the connection (for use by heartbeat)"""
            url = disambiguate_url(url, self.location)
            if self.using_ssh:
                self.log.debug("Tunneling connection to %s via %s", url, self.sshserver)
                url, tunnelobj = self.tunnel_mod.open_tunnel(url, self.sshserver,
                            keyfile=self.sshkey, paramiko=self.paramiko,
                            password=password,
                )
            return str(url)
        return connect, maybe_tunnel

def init_schedulers(self):
        children = self.children
        mq = import_item(str(self.mq_class))
        
        f = self.factory
        ident = f.session.bsession
        # disambiguate url, in case of *
        monitor_url = disambiguate_url(f.monitor_url)
        # maybe_inproc = 'inproc://monitor' if self.use_threads else monitor_url
        # IOPub relay (in a Process)
        q = mq(zmq.PUB, zmq.SUB, zmq.PUB, b'N/A',b'iopub')
        q.bind_in(f.client_url('iopub'))
        q.setsockopt_in(zmq.IDENTITY, ident + b"_iopub")
        q.bind_out(f.engine_url('iopub'))
        q.setsockopt_out(zmq.SUBSCRIBE, b'')
        q.connect_mon(monitor_url)
        q.daemon=True
        children.append(q)

        # Multiplexer Queue (in a Process)
        q = mq(zmq.ROUTER, zmq.ROUTER, zmq.PUB, b'in', b'out')
        
        q.bind_in(f.client_url('mux'))
        q.setsockopt_in(zmq.IDENTITY, b'mux_in')

def connect(self, peers):
        """connect to peers.  `peers` will be a dict of 4-tuples, keyed by name.
        {peer : (ident, addr, pub_addr, location)}
        where peer is the name, ident is the XREP identity, addr,pub_addr are the
        """
        for peer, (ident, url, pub_url, location) in peers.items():
            self.peers[peer] = ident
            if ident != self.identity:
                self.sub.connect(disambiguate_url(pub_url, location))
            if ident > self.identity:
                # prevent duplicate xrep, by only connecting
                # engines to engines with higher IDENTITY
                # a doubly-connected pair will crash
                self.socket.connect(disambiguate_url(url, location))

def connect(s, url):
            url = disambiguate_url(url, self.location)
            if self.using_ssh:
                self.log.debug("Tunneling connection to %s via %s", url, self.sshserver)
                return self.tunnel_mod.tunnel_connection(s, url, self.sshserver,
                            keyfile=self.sshkey, paramiko=self.paramiko,
                            password=password,
                )
            else:
                return s.connect(url)

def connect(self, peers):
        """connect to peers.  `peers` will be a dict of 4-tuples, keyed by name.
        {peer : (ident, addr, pub_addr, location)}
        where peer is the name, ident is the XREP identity, addr,pub_addr are the
        """
        for peer, (ident, url, pub_url, location) in peers.items():
            self.peers[peer] = ident
            if ident != self.identity:
                self.sub.connect(disambiguate_url(pub_url, location))
            if ident > self.identity:
                # prevent duplicate xrep, by only connecting
                # engines to engines with higher IDENTITY
                # a doubly-connected pair will crash
                self.socket.connect(disambiguate_url(url, location))

def disambiguate_dns_url(url, location):
    """accept either IP address or dns name, and return IP"""
    if not ip_pat.match(location):
        location = socket.gethostbyname(location)
    return disambiguate_url(url, location)

def connect(self, south_peer=None, west_peer=None):
        """connect to peers.  `peers` will be a 3-tuples, of the form:
        (location, north_addr, east_addr)
        as produced by
        """
        if south_peer is not None:
            location, url, _ = south_peer
            self.south.connect(disambiguate_url(url, location))
        if west_peer is not None:
            location, _, url = west_peer
            self.west.connect(disambiguate_url(url, location))

# q.setsockopt_out(zmq.HWM, hub.hwm)
            q.bind_in(f.client_url('task'))
            q.setsockopt_in(zmq.IDENTITY, b'task_in')
            q.bind_out(f.engine_url('task'))
            q.setsockopt_out(zmq.IDENTITY, b'task_out')
            q.connect_mon(monitor_url)
            q.daemon=True
            children.append(q)
        elif scheme == 'none':
            self.log.warn("task::using no Task scheduler")

        else:
            self.log.info("task::using Python %s Task scheduler"%scheme)
            sargs = (f.client_url('task'), f.engine_url('task'),
                    monitor_url, disambiguate_url(f.client_url('notification')),
                    disambiguate_url(f.client_url('registration')),
            )
            kwargs = dict(logname='scheduler', loglevel=self.log_level,
                            log_url = self.log_url, config=dict(self.config))
            if 'Process' in self.mq_class:
                # run the Python scheduler in a Process
                q = Process(target=launch_scheduler, args=sargs, kwargs=kwargs)
                q.daemon=True
                children.append(q)
            else:
                # single-threaded Controller
                kwargs['in_thread'] = True
                launch_scheduler(*sargs, **kwargs)
        
        # set unlimited HWM for all relay devices
        if hasattr(zmq, 'SNDHWM'):
            q = children[0]