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#!/usr/bin/env python3
# Copyright (c) 2020-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test block-relay-only anchors functionality"""
import os
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import check_node_connections
INBOUND_CONNECTIONS = 5
BLOCK_RELAY_CONNECTIONS = 2
class AnchorsTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.disable_autoconnect = False
def run_test(self):
node_anchors_path = os.path.join(
self.nodes[0].datadir, "regtest", "anchors.dat"
)
self.log.info("When node starts, check if anchors.dat doesn't exist")
assert not os.path.exists(node_anchors_path)
self.log.info(f"Add {BLOCK_RELAY_CONNECTIONS} block-relay-only connections to node")
for i in range(BLOCK_RELAY_CONNECTIONS):
self.log.debug(f"block-relay-only: {i}")
self.nodes[0].add_outbound_p2p_connection(
P2PInterface(), p2p_idx=i, connection_type="block-relay-only"
)
self.log.info(f"Add {INBOUND_CONNECTIONS} inbound connections to node")
for i in range(INBOUND_CONNECTIONS):
self.log.debug(f"inbound: {i}")
self.nodes[0].add_p2p_connection(P2PInterface())
self.log.info("Check node connections")
check_node_connections(node=self.nodes[0], num_in=5, num_out=2)
# 127.0.0.1
ip = "7f000001"
# Since the ip is always 127.0.0.1 for this case,
# we store only the port to identify the peers
block_relay_nodes_port = []
inbound_nodes_port = []
for p in self.nodes[0].getpeerinfo():
addr_split = p["addr"].split(":")
if p["connection_type"] == "block-relay-only":
block_relay_nodes_port.append(hex(int(addr_split[1]))[2:])
else:
inbound_nodes_port.append(hex(int(addr_split[1]))[2:])
self.log.info("Stop node 0")
self.stop_node(0)
# It should contain only the block-relay-only addresses
self.log.info("Check the addresses in anchors.dat")
with open(node_anchors_path, "rb") as file_handler:
anchors = file_handler.read().hex()
for port in block_relay_nodes_port:
ip_port = ip + port
assert ip_port in anchors
for port in inbound_nodes_port:
ip_port = ip + port
assert ip_port not in anchors
self.log.info("Start node")
self.start_node(0)
self.log.info("When node starts, check if anchors.dat doesn't exist anymore")
assert not os.path.exists(node_anchors_path)
if __name__ == "__main__":
AnchorsTest().main()
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