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91 lines
3.3 KiB
Python
Executable file
91 lines
3.3 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2019-2022 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test that we reject low difficulty headers to prevent our block tree from filling up with useless bloat"""
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.p2p import (
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CBlockHeader,
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P2PInterface,
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)
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from test_framework.messages import (
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msg_headers,
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)
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from test_framework.blocktools import (
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NORMAL_GBT_REQUEST_PARAMS,
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create_block,
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)
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from test_framework.util import assert_equal
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class PreSyncHeadersTest(BitcoinTestFramework):
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def set_test_params(self):
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self.rpc_timeout *= 4 # To avoid timeout when generating BLOCKS_TO_MINE
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self.setup_clean_chain = True
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self.num_nodes = 4
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# Node0 has no required chainwork; node1 requires 15 blocks on top of the genesis block; node2 requires 2047
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self.extra_args = [["-minimumchainwork=0x0", "-checkblockindex=0"], ["-minimumchainwork=0x1f", "-checkblockindex=0"], ["-minimumchainwork=0x1000", "-checkblockindex=0"], ["-minimumchainwork=0x1000", "-checkblockindex=0", "-whitelist=noban@127.0.0.1"]]
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def add_options(self, parser):
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self.add_wallet_options(parser)
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def setup_network(self):
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self.setup_nodes()
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self.reconnect_all()
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self.sync_all()
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def disconnect_all(self):
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self.disconnect_nodes(0, 1)
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self.disconnect_nodes(0, 2)
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self.disconnect_nodes(0, 3)
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def reconnect_all(self):
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self.connect_nodes(0, 1)
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self.connect_nodes(0, 2)
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self.connect_nodes(0, 3)
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def run_test(self):
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# ELEMENTS: this test taken from p2p_headers_sync_with_mainchainwork.py to run on elements regtest
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self.nodes[0].createwallet("miner")
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wallet = self.nodes[0].get_wallet_rpc("miner")
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global address
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address = wallet.getnewaddress()
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self.log.info("Test that getpeerinfo() includes headers presync height")
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# Disconnect network, so that we can find our own peer connection more
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# easily
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self.disconnect_all()
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p2p = self.nodes[0].add_p2p_connection(P2PInterface())
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node = self.nodes[0]
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# Ensure we have a long chain already
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current_height = self.nodes[0].getblockcount()
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if (current_height < 3000):
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self.generatetoaddress(node, 3000-current_height, address, sync_fun=self.no_op)
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# Send a group of 2000 headers, forking from genesis.
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new_blocks = []
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hashPrevBlock = int(node.getblockhash(0), 16)
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for i in range(2000):
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block = create_block(hashprev = hashPrevBlock, tmpl=node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS))
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block.solve()
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new_blocks.append(block)
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hashPrevBlock = block.sha256
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headers_message = msg_headers()
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headers_message.headers = [CBlockHeader(b) for b in new_blocks]
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#headers_message = msg_headers(headers=new_blocks)
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p2p.send_and_ping(headers_message)
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# getpeerinfo should show a sync in progress
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assert_equal(node.getpeerinfo()[0]['presynced_headers'], 2000)
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if __name__ == '__main__':
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PreSyncHeadersTest(__file__).main()
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