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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

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1#!/usr/bin/env python3
2# Copyright (c) The Bitcoin Core developers
3# Distributed under the MIT software license, see the accompanying
4# file COPYING or http://www.opensource.org/licenses/mit-license.php.
5"""Test that the correct active block is chosen in complex reorgs."""
6
7from test_framework.blocktools import create_block
8from test_framework.messages import CBlockHeader
9from test_framework.p2p import P2PDataStore
10from test_framework.test_framework import BitcoinTestFramework
11from test_framework.util import assert_equal
12
13class ChainTiebreaksTest(BitcoinTestFramework):
14    def set_test_params(self):
15        self.num_nodes = 2
16        self.setup_clean_chain = True
17
18    def setup_network(self):
19        self.setup_nodes()
20
21    @staticmethod
22    def send_headers(node, blocks):
23        """Submit headers for blocks to node."""
24        for block in blocks:
25            # Use RPC rather than P2P, to prevent the message from being interpreted as a block
26            # announcement.
27            node.submitheader(hexdata=CBlockHeader(block).serialize().hex())
28
29    def test_chain_split_in_memory(self):
30        node = self.nodes[0]
31        # Add P2P connection to bitcoind
32        peer = node.add_p2p_connection(P2PDataStore())
33
34        self.log.info('Precomputing blocks')
35        #
36        #          /- B3 -- B7
37        #        B1      \- B8
38        #       /  \
39        #      /    \ B4 -- B9
40        #   B0           \- B10
41        #      \
42        #       \  /- B5
43        #        B2
44        #          \- B6
45        #
46        blocks = []
47
48        # Construct B0, building off genesis.
49        start_height = node.getblockcount()
50        blocks.append(create_block(
51            hashprev=int(node.getbestblockhash(), 16),
52            tmpl={"height": start_height + 1}
53        ))
54        blocks[-1].solve()
55
56        # Construct B1-B10.
57        for i in range(1, 11):
58            blocks.append(create_block(
59                hashprev=blocks[(i - 1) >> 1].hash_int,
60                tmpl={
61                    "height": start_height + (i + 1).bit_length(),
62                    # Make sure each block has a different hash.
63                    "curtime": blocks[-1].nTime + 1,
64                }
65            ))
66            blocks[-1].solve()
67
68        self.log.info('Make sure B0 is accepted normally')
69        peer.send_blocks_and_test([blocks[0]], node, success=True)
70        # B0 must be active chain now.
71        assert_equal(node.getbestblockhash(), blocks[0].hash_hex)
72
73        self.log.info('Send B1 and B2 headers, and then blocks in opposite order')
74        self.send_headers(node, blocks[1:3])
75        peer.send_blocks_and_test([blocks[2]], node, success=True)
76        peer.send_blocks_and_test([blocks[1]], node, success=False)
77        # B2 must be active chain now, as full data for B2 was received first.
78        assert_equal(node.getbestblockhash(), blocks[2].hash_hex)
79
80        self.log.info('Send all further headers in order')
81        self.send_headers(node, blocks[3:])
82        # B2 is still the active chain, headers don't change this.
83        assert_equal(node.getbestblockhash(), blocks[2].hash_hex)
84
85        self.log.info('Send blocks B7-B10')
86        peer.send_blocks_and_test([blocks[7]], node, success=False)
87        peer.send_blocks_and_test([blocks[8]], node, success=False)
88        peer.send_blocks_and_test([blocks[9]], node, success=False)
89        peer.send_blocks_and_test([blocks[10]], node, success=False)
90        # B2 is still the active chain, as B7-B10 have missing parents.
91        assert_equal(node.getbestblockhash(), blocks[2].hash_hex)
92
93        self.log.info('Send parents B3-B4 of B8-B10 in reverse order')
94        peer.send_blocks_and_test([blocks[4]], node, success=False, force_send=True)
95        peer.send_blocks_and_test([blocks[3]], node, success=False, force_send=True)
96        # B9 is now active. Despite B7 being received earlier, the missing parent.
97        assert_equal(node.getbestblockhash(), blocks[9].hash_hex)
98
99        self.log.info('Invalidate B9-B10')
100        node.invalidateblock(blocks[9].hash_hex)
101        node.invalidateblock(blocks[10].hash_hex)
102        # B7 is now active.
103        assert_equal(node.getbestblockhash(), blocks[7].hash_hex)
104
105        # Invalidate blocks to start fresh on the next test
106        node.invalidateblock(blocks[0].hash_hex)
107
108    def test_chain_split_from_disk(self):
109        node = self.nodes[1]
110        peer = node.add_p2p_connection(P2PDataStore())
111
112        self.generate(node, 1, sync_fun=self.no_op)
113
114        self.log.info('Precomputing blocks')
115        #
116        #            /- A1
117        #           /
118        #   G -- B1 --- A2
119        #           \
120        #            \- A3
121        #
122        blocks = []
123
124        # Construct three equal-work blocks building from the tip.
125        start_height = node.getblockcount()
126        tip_block = node.getblock(node.getbestblockhash())
127        prev_time = tip_block["time"]
128
129        for i in range(0, 3):
130            blocks.append(create_block(
131                hashprev=int(tip_block["hash"], 16),
132                tmpl={"height": start_height + 1,
133                # Make sure each block has a different hash.
134                "curtime": prev_time + i + 1,
135                }
136            ))
137            blocks[-1].solve()
138
139        # Send blocks and test that only the first one connects
140        self.log.info('Send A1, A2, and A3. Make sure that only the former connects')
141        peer.send_blocks_and_test([blocks[0]], node, success=True)
142        peer.send_blocks_and_test([blocks[1]], node, success=False)
143        peer.send_blocks_and_test([blocks[2]], node, success=False)
144
145        # Restart and send a new block
146        self.restart_node(1)
147        assert_equal(blocks[0].hash_hex, node.getbestblockhash())
148        peer = node.add_p2p_connection(P2PDataStore())
149        next_block = create_block(
150            hashprev=blocks[0].hash_int,
151            tmpl={"height": start_height + 2,
152            "curtime": prev_time + 10,
153            }
154        )
155        next_block.solve()
156        peer.send_blocks_and_test([next_block], node, success=True)
157
158    def run_test(self):
159        self.test_chain_split_in_memory()
160        self.test_chain_split_from_disk()
161
162
163if __name__ == '__main__':
164    ChainTiebreaksTest(__file__).main()
165

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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