How to use the autobahn.wamp.exception.TransportLost function in autobahn

def _unregister(self, registration):
        """
        Called from :meth:`autobahn.wamp.protocol.Registration.unregister`
        """
        assert(isinstance(registration, Registration))
        assert registration.active
        assert(registration.id in self._registrations)

        if not self._transport:
            raise exception.TransportLost()

        request_id = self._request_id_gen.next()

        on_reply = txaio.create_future()
        self._unregister_reqs[request_id] = UnregisterRequest(request_id, on_reply, registration.id)

        msg = message.Unregister(request_id, registration.id)

        self._transport.send(msg)
        return on_reply

def onDisconnect(self):
        """
        Implements :func:`autobahn.wamp.interfaces.ISession.onDisconnect`
        """
        # fire TransportLost on any _still_ outstanding requests
        # (these should have been already cleaned up in onLeave() - when
        # this actually has fired)
        exc = exception.TransportLost()
        self._errback_outstanding_requests(exc)

def send(self, msg):
        """
        Implements :func:`autobahn.wamp.interfaces.ITransport.send`
        """
        if self.isOpen():
            try:
                if self.factory.debug_wamp:
                    print("TX {0}".format(msg))
                payload, isBinary = self._serializer.serialize(msg)
            except Exception as e:
                # all exceptions raised from above should be serialization errors ..
                raise SerializationError("WAMP serialization error ({0})".format(e))
            else:
                self.sendMessage(payload, isBinary)
        else:
            raise TransportLost()

def close(self):
        """
        Implements :func:`autobahn.wamp.interfaces.ITransport.close`
        """
        if self.isOpen():
            self.onClose(True, 1000, u"session closed")
            self._receive._kill()
            del self._parent._transports[self._transport_id]
        else:
            raise TransportLost()

api_id=hl(uuid.UUID(bytes=api_id)),
                        price=hl(str(int(price / 10 ** 18) if price is not None else 0) + ' XBR', color='magenta'),
                        delegate=hl(binascii.b2a_hex(delegate).decode()),
                        prefix=hl(prefix))

                    self.log.debug('offer={offer}', offer=offer)

                    break

                except ApplicationError as e:
                    if e.error == 'wamp.error.no_such_procedure':
                        self.log.warn('xbr.marketmaker.offer: procedure unavailable!')
                    else:
                        self.log.failure()
                        break
                except TransportLost:
                    self.log.warn('TransportLost while calling xbr.marketmaker.offer!')
                    break
                except:
                    self.log.failure()

                retries -= 1
                self.log.warn('Failed to place offer for key! Retrying {retries}/5 ..', retries=retries)
                await asyncio.sleep(1)

def abort(self):
        """
        Implements :func:`autobahn.wamp.interfaces.ITransport.abort`
        """
        if self.isOpen():
            self._bailout(protocol.WebSocketProtocol.CLOSE_STATUS_CODE_GOING_AWAY)
        else:
            raise TransportLost()

def abort(self):
        """
        Implements :func:`autobahn.wamp.interfaces.ITransport.abort`
        """
        if self.isOpen():
            if hasattr(self.transport, 'abortConnection'):
                # ProcessProtocol lacks abortConnection()
                self.transport.abortConnection()
            else:
                self.transport.loseConnection()
        else:
            raise TransportLost()

def abort(self):
        """
        Implements :func:`autobahn.wamp.interfaces.ITransport.abort`
        """
        if self.isOpen():
            self.onClose(True, 1000, u"session aborted")
            self._receive._kill()
            del self._parent._transports[self._transport_id]
        else:
            raise TransportLost()

def register(self, endpoint, procedure=None, options=None, prefix=None):
        """
        Implements :func:`autobahn.wamp.interfaces.ICallee.register`
        """
        assert((callable(endpoint) and procedure is not None) or hasattr(endpoint, '__class__'))
        assert(procedure is None or type(procedure) == six.text_type)
        assert(options is None or isinstance(options, types.RegisterOptions))
        assert prefix is None or isinstance(prefix, six.text_type)

        if not self._transport:
            raise exception.TransportLost()

        def _register(obj, fn, procedure, options):
            message.check_or_raise_uri(procedure,
                                       message='{}.register()'.format(self.__class__.__name__),
                                       strict=False,
                                       allow_empty_components=True,
                                       allow_none=False)

            request_id = self._request_id_gen.next()
            on_reply = txaio.create_future()
            endpoint_obj = Endpoint(fn, obj, options.details_arg if options else None)
            if prefix is not None:
                procedure = u"{}{}".format(prefix, procedure)
            self._register_reqs[request_id] = RegisterRequest(request_id, on_reply, procedure, endpoint_obj)

            if options:

def send(self, msg):
        """
        Implements :func:`autobahn.wamp.interfaces.ITransport.send`
        """
        if self.isOpen():
            self.log.trace("WampRawSocketProtocol: TX WAMP message: {msg}", msg=msg)
            try:
                payload, _ = self._serializer.serialize(msg)
            except Exception as e:
                # all exceptions raised from above should be serialization errors ..
                raise SerializationError("WampRawSocketProtocol: unable to serialize WAMP application payload ({0})".format(e))
            else:
                self.sendString(payload)
                self.log.trace("WampRawSocketProtocol: TX octets: {octets}", octets=_LazyHexFormatter(payload))
        else:
            raise TransportLost()