You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
4.5 KiB
97 lines
4.5 KiB
#!/usr/bin/env python3 |
|
# Copyright (c) 2014-2017 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 mempool re-org scenarios. |
|
|
|
Test re-org scenarios with a mempool that contains transactions |
|
that spend (directly or indirectly) coinbase transactions. |
|
""" |
|
|
|
from test_framework.test_framework import BitcoinTestFramework |
|
from test_framework.util import * |
|
|
|
# Create one-input, one-output, no-fee transaction: |
|
class MempoolCoinbaseTest(BitcoinTestFramework): |
|
def set_test_params(self): |
|
self.num_nodes = 2 |
|
self.extra_args = [["-checkmempool"]] * 2 |
|
|
|
alert_filename = None # Set by setup_network |
|
|
|
def run_test(self): |
|
# Start with a 200 block chain |
|
assert_equal(self.nodes[0].getblockcount(), 200) |
|
|
|
# Mine four blocks. After this, nodes[0] blocks |
|
# 101, 102, and 103 are spend-able. |
|
new_blocks = self.nodes[1].generate(4) |
|
self.sync_all() |
|
|
|
node0_address = self.nodes[0].getnewaddress() |
|
node1_address = self.nodes[1].getnewaddress() |
|
|
|
# Three scenarios for re-orging coinbase spends in the memory pool: |
|
# 1. Direct coinbase spend : spend_101 |
|
# 2. Indirect (coinbase spend in chain, child in mempool) : spend_102 and spend_102_1 |
|
# 3. Indirect (coinbase and child both in chain) : spend_103 and spend_103_1 |
|
# Use invalidatblock to make all of the above coinbase spends invalid (immature coinbase), |
|
# and make sure the mempool code behaves correctly. |
|
b = [ self.nodes[0].getblockhash(n) for n in range(101, 105) ] |
|
coinbase_txids = [ self.nodes[0].getblock(h)['tx'][0] for h in b ] |
|
spend_101_raw = create_tx(self.nodes[0], coinbase_txids[1], node1_address, 499.99) |
|
spend_102_raw = create_tx(self.nodes[0], coinbase_txids[2], node0_address, 499.99) |
|
spend_103_raw = create_tx(self.nodes[0], coinbase_txids[3], node0_address, 499.99) |
|
|
|
# Create a transaction which is time-locked to two blocks in the future |
|
timelock_tx = self.nodes[0].createrawtransaction([{"txid": coinbase_txids[0], "vout": 0}], {node0_address: 499.99}) |
|
# Set the time lock |
|
timelock_tx = timelock_tx.replace("ffffffff", "11111191", 1) |
|
timelock_tx = timelock_tx[:-8] + hex(self.nodes[0].getblockcount() + 2)[2:] + "000000" |
|
timelock_tx = self.nodes[0].signrawtransaction(timelock_tx)["hex"] |
|
# This will raise an exception because the timelock transaction is too immature to spend |
|
assert_raises_rpc_error(-26, "non-final", self.nodes[0].sendrawtransaction, timelock_tx) |
|
|
|
# Broadcast and mine spend_102 and 103: |
|
spend_102_id = self.nodes[0].sendrawtransaction(spend_102_raw) |
|
spend_103_id = self.nodes[0].sendrawtransaction(spend_103_raw) |
|
self.nodes[0].generate(1) |
|
# Time-locked transaction is still too immature to spend |
|
assert_raises_rpc_error(-26,'non-final', self.nodes[0].sendrawtransaction, timelock_tx) |
|
|
|
# Create 102_1 and 103_1: |
|
spend_102_1_raw = create_tx(self.nodes[0], spend_102_id, node1_address, 499.98) |
|
spend_103_1_raw = create_tx(self.nodes[0], spend_103_id, node1_address, 499.98) |
|
|
|
# Broadcast and mine 103_1: |
|
spend_103_1_id = self.nodes[0].sendrawtransaction(spend_103_1_raw) |
|
last_block = self.nodes[0].generate(1) |
|
# Time-locked transaction can now be spent |
|
timelock_tx_id = self.nodes[0].sendrawtransaction(timelock_tx) |
|
|
|
# ... now put spend_101 and spend_102_1 in memory pools: |
|
spend_101_id = self.nodes[0].sendrawtransaction(spend_101_raw) |
|
spend_102_1_id = self.nodes[0].sendrawtransaction(spend_102_1_raw) |
|
|
|
self.sync_all() |
|
|
|
assert_equal(set(self.nodes[0].getrawmempool()), {spend_101_id, spend_102_1_id, timelock_tx_id}) |
|
|
|
for node in self.nodes: |
|
node.invalidateblock(last_block[0]) |
|
# Time-locked transaction is now too immature and has been removed from the mempool |
|
# spend_103_1 has been re-orged out of the chain and is back in the mempool |
|
assert_equal(set(self.nodes[0].getrawmempool()), {spend_101_id, spend_102_1_id, spend_103_1_id}) |
|
|
|
# Use invalidateblock to re-org back and make all those coinbase spends |
|
# immature/invalid: |
|
for node in self.nodes: |
|
node.invalidateblock(new_blocks[0]) |
|
|
|
self.sync_all() |
|
|
|
# mempool should be empty. |
|
assert_equal(set(self.nodes[0].getrawmempool()), set()) |
|
|
|
if __name__ == '__main__': |
|
MempoolCoinbaseTest().main()
|
|
|