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#!/usr/bin/env python3
# Copyright (c) 2015-2021 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 node responses to invalid locators.
"""
from test_framework.messages import msg_getheaders, msg_getblocks, MAX_LOCATOR_SZ
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
class InvalidLocatorTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
def run_test(self):
node = self.nodes[0] # convenience reference to the node
self.generatetoaddress(node, 1, node.get_deterministic_priv_key().address) # Get node out of IBD
self.log.info('Test max locator size')
block_count = node.getblockcount()
for msg in [msg_getheaders(), msg_getblocks()]:
self.log.info('Wait for disconnect when sending {} hashes in locator'.format(MAX_LOCATOR_SZ + 1))
exceed_max_peer = node.add_p2p_connection(P2PInterface())
msg.locator.vHave = [int(node.getblockhash(i - 1), 16) for i in range(block_count, block_count - (MAX_LOCATOR_SZ + 1), -1)]
exceed_max_peer.send_message(msg)
exceed_max_peer.wait_for_disconnect()
node.disconnect_p2ps()
self.log.info('Wait for response when sending {} hashes in locator'.format(MAX_LOCATOR_SZ))
within_max_peer = node.add_p2p_connection(P2PInterface())
msg.locator.vHave = [int(node.getblockhash(i - 1), 16) for i in range(block_count, block_count - (MAX_LOCATOR_SZ), -1)]
within_max_peer.send_message(msg)
if type(msg) is msg_getheaders:
within_max_peer.wait_for_header(node.getbestblockhash())
else:
within_max_peer.wait_for_block(int(node.getbestblockhash(), 16))
if __name__ == '__main__':
InvalidLocatorTest().main()
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