def recv_connect(self, version=None, support=None, session=None):
        """DDP connect handler."""
        del session  # Meteor doesn't even use this!
        if self.connection is not None:
            raise MeteorError(
                400, 'Session already established.',
                self.connection.connection_id,
            )
        elif (version, support) in None or version not in self.versions:
            self.reply('failed', version=self.versions[0])
        elif version not in support:
            raise MeteorError(400, 'Client version/support mismatch.')
        else:
            from dddp.models import Connection
            cur = connection.cursor()
            cur.execute('SELECT pg_backend_pid()')
            (backend_pid,) = cur.fetchone()
            this.version = version
            this.support = support
            self.connection = Connection.objects.create(
                server_addr='%d:%s' % (
                    backend_pid,
                    self.ws.handler.socket.getsockname(),
                ),
                remote_addr=self.remote_addr,
                version=version,
            )
            self.pgworker.connections[self.connection.pk] = self
            atexit.register(self.on_close, 'Shutting down.')
            self.reply('connected', session=self.connection.connection_id)
dataset/ETHPy150Open django-ddp/django-ddp/dddp/websocket.py/DDPWebSocketApplication.recv_connect/swapped operands of `in`