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abandonconflict.py
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#!/usr/bin/env python3
# Copyright (c) 2014-2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
import urllib.parse
class AbandonConflictTest(BitcoinTestFramework):
def __init__(self):
super().__init__()
self.num_nodes = 2
self.setup_clean_chain = False
def setup_network(self):
self.nodes = []
self.nodes.append(start_node(0, self.options.tmpdir, ["-debug","-logtimemicros","-minrelaytxfee=0.001"]))
self.nodes.append(start_node(1, self.options.tmpdir, ["-debug","-logtimemicros"]))
connect_nodes(self.nodes[0], 1)
def run_test(self):
self.nodes[1].generate(100)
sync_blocks(self.nodes)
balance = self.nodes[0].getbalance()
txA = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("10"))
txB = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("10"))
txC = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("10"))
sync_mempools(self.nodes)
self.nodes[1].generate(1)
sync_blocks(self.nodes)
newbalance = self.nodes[0].getbalance()
assert(balance - newbalance < Decimal("0.1")) #no more than fees lost
balance = newbalance
url = urllib.parse.urlparse(self.nodes[1].url)
self.nodes[0].disconnectnode(url.hostname+":"+str(p2p_port(1)))
# Identify the 10btc outputs
nA = next(i for i, vout in enumerate(self.nodes[0].getrawtransaction(txA, 1)["vout"]) if vout["value"] == Decimal("10"))
nB = next(i for i, vout in enumerate(self.nodes[0].getrawtransaction(txB, 1)["vout"]) if vout["value"] == Decimal("10"))
nC = next(i for i, vout in enumerate(self.nodes[0].getrawtransaction(txC, 1)["vout"]) if vout["value"] == Decimal("10"))
inputs =[]
# spend 10btc outputs from txA and txB
inputs.append({"txid":txA, "vout":nA})
inputs.append({"txid":txB, "vout":nB})
outputs = {}
outputs[self.nodes[0].getnewaddress()] = Decimal("14.998")
outputs[self.nodes[1].getnewaddress()] = Decimal("5")
signed = self.nodes[0].signrawtransaction(self.nodes[0].createrawtransaction(inputs, outputs))
txAB1 = self.nodes[0].sendrawtransaction(signed["hex"])
# Identify the 14.99998btc output
nAB = next(i for i, vout in enumerate(self.nodes[0].getrawtransaction(txAB1, 1)["vout"]) if vout["value"] == Decimal("14.998"))
#Create a child tx spending AB1 and C
inputs = []
inputs.append({"txid":txAB1, "vout":nAB})
inputs.append({"txid":txC, "vout":nC})
outputs = {}
outputs[self.nodes[0].getnewaddress()] = Decimal("24.96")
signed2 = self.nodes[0].signrawtransaction(self.nodes[0].createrawtransaction(inputs, outputs))
txABC2 = self.nodes[0].sendrawtransaction(signed2["hex"])
# In mempool txs from self should increase balance from change
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance - Decimal("30") + Decimal("24.96"))
balance = newbalance
# Restart the node with a higher min relay fee so the parent tx is no longer in mempool
# TODO: redo with eviction
# Note had to make sure tx did not have AllowFree priority
stop_node(self.nodes[0],0)
self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug","-logtimemicros","-minrelaytxfee=0.01"])
# Verify txs no longer in mempool
assert_equal(len(self.nodes[0].getrawmempool()), 0)
# Not in mempool txs from self should only reduce balance
# inputs are still spent, but change not received
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance - Decimal("24.96"))
# Unconfirmed received funds that are not in mempool, also shouldn't show
# up in unconfirmed balance
unconfbalance = self.nodes[0].getunconfirmedbalance() + self.nodes[0].getbalance()
assert_equal(unconfbalance, newbalance)
# Also shouldn't show up in listunspent
assert(not txABC2 in [utxo["txid"] for utxo in self.nodes[0].listunspent(0)])
balance = newbalance
# Abandon original transaction and verify inputs are available again
# including that the child tx was also abandoned
self.nodes[0].abandontransaction(txAB1)
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance + Decimal("30"))
balance = newbalance
# Verify that even with a low min relay fee, the tx is not reaccepted from wallet on startup once abandoned
stop_node(self.nodes[0],0)
self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug","-logtimemicros","-minrelaytxfee=0.001"])
assert_equal(len(self.nodes[0].getrawmempool()), 0)
assert_equal(self.nodes[0].getbalance(), balance)
# But if its received again then it is unabandoned
# And since now in mempool, the change is available
# But its child tx remains abandoned
self.nodes[0].sendrawtransaction(signed["hex"])
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance - Decimal("20") + Decimal("14.998"))
balance = newbalance
# Send child tx again so its unabandoned
self.nodes[0].sendrawtransaction(signed2["hex"])
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance - Decimal("10") - Decimal("14.998") + Decimal("24.96"))
balance = newbalance
# Remove using high relay fee again
stop_node(self.nodes[0],0)
self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug","-logtimemicros","-minrelaytxfee=0.01"])
assert_equal(len(self.nodes[0].getrawmempool()), 0)
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance - Decimal("24.96"))
balance = newbalance
# Create a double spend of AB1 by spending again from only A's 10 output
# Mine double spend from node 1
inputs =[]
inputs.append({"txid":txA, "vout":nA})
outputs = {}
outputs[self.nodes[1].getnewaddress()] = Decimal("9.99")
tx = self.nodes[0].createrawtransaction(inputs, outputs)
signed = self.nodes[0].signrawtransaction(tx)
self.nodes[1].sendrawtransaction(signed["hex"])
self.nodes[1].generate(1)
connect_nodes(self.nodes[0], 1)
sync_blocks(self.nodes)
# Verify that B and C's 10 BTC outputs are available for spending again because AB1 is now conflicted
newbalance = self.nodes[0].getbalance()
assert_equal(newbalance, balance + Decimal("20"))
balance = newbalance
# There is currently a minor bug around this and so this test doesn't work. See Issue #7315
# Invalidate the block with the double spend and B's 10 BTC output should no longer be available
# Don't think C's should either
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
newbalance = self.nodes[0].getbalance()
#assert_equal(newbalance, balance - Decimal("10"))
print("If balance has not declined after invalidateblock then out of mempool wallet tx which is no longer")
print("conflicted has not resumed causing its inputs to be seen as spent. See Issue #7315")
print(str(balance) + " -> " + str(newbalance) + " ?")
if __name__ == '__main__':
AbandonConflictTest().main()