def __init__(self, routing_table_class=TreeRoutingTable,
node_id=None, _reactor=None):
if node_id is None:
node_id = random.getrandbits(constants.id_size)
# Verify the node_id is valid
basic_coder.encode_network_id(node_id)
KRPC_Sender.__init__(self, routing_table_class, node_id, _reactor)
# Datastore is used for storing peers on torrents
self._datastore = defaultdict(set)
self._token_generator = _TokenGenerator()
