def test_parallelchains(self):
"""
1. Verify preciousblock does not activate soft rejected block.
2. Test marking of blocks with softrejectblock with two parallel chains.
"""
b1_hash = self.nodes[0].generate(1)[0]
sync_blocks(self.nodes)
disconnect_nodes_bi(self.nodes, 0, 1)
blockhashes_node0 = self.nodes[0].generate(2)
b2_hash = blockhashes_node0[0]
b3_hash = blockhashes_node0[1]
blockhashes_node1 = self.nodes[1].generate(2)
b2a_hash = blockhashes_node1[0]
b3a_hash = blockhashes_node1[1]
connect_nodes_bi(self.nodes, 0, 1)
self.wait_for_chain_tips(self.nodes[0], {b3_hash, b3a_hash})
# 1. Verify preciousblock does not activate soft rejected block.
self.nodes[0].softrejectblock(b2_hash, 1)
self.nodes[0].waitforblockheight(3)
assert_equal(self.nodes[0].getbestblockhash(), b3a_hash)
self.nodes[0].preciousblock(b3_hash)
assert_equal(self.nodes[0].getbestblockhash(), b3a_hash)
self.nodes[0].acceptblock(b2_hash)
# 2. Test marking of blocks with softrejectblock with two parallel chains.
self.nodes[0].softrejectblock(b1_hash, 3)
assert_equal(self.soft_rej_blocks_hashes(self.nodes[0]),
{b1_hash, b2_hash, b2a_hash, b3_hash, b3a_hash})
self.nodes[1].generate(2)
sync_blocks(self.nodes)
def run_test(self):
# Start by creating some coinbases we can spend later
self.nodes[0].generate(150)
sync_blocks(self.nodes[0:3])
# Connect node2 just to node1 so that it is forced to request the next blocks
# from a slow sending peer
disconnect_nodes_bi(self.nodes, 0, 2)
disconnect_nodes_bi(self.nodes, 1, 2)
connect_nodes(self.nodes, 2, 1)
# Extend the chain with a big block and some more small blocks
utxos = []
mine_large_block(self.nodes[0], utxos)
large_block_hash = self.nodes[0].getbestblockhash()
self.nodes[0].generate(5)
sync_blocks(self.nodes[0:2])
# Ensure node2 has started to request the big block from slow node1
def blockInFlight(blockNum):
inflight = self.nodes[2].getpeerinfo()[0]["inflight"]
return blockNum in inflight
wait_until(lambda: blockInFlight(151), check_interval=1)
# Reconnect node2 to node0 so that it has another option from which to fetch blocks
connect_nodes(self.nodes, 2, 0)
sync_blocks(self.nodes[0:3])
# Check that a parallel fetch to node0 was triggered from node2
assert (check_for_log_msg(
self, "Triggering parallel block download for {}".format(
large_block_hash), "/node2"))
def test_with_preciousblock(self):
"""
Test softrejectblock in combination with precious block
"""
self.nodes[0].generate(1)
sync_blocks(self.nodes)
disconnect_nodes_bi(self.nodes, 0, 1)
blockhashes_node0 = self.nodes[0].generate(4)
b2_hash = blockhashes_node0[0]
b5_hash = blockhashes_node0[3]
blockhashes_node1 = self.nodes[1].generate(3)
b4a_hash = blockhashes_node1[2]
connect_nodes_bi(self.nodes, 0, 1)
self.wait_for_chain_tips(self.nodes[0], {b5_hash, b4a_hash})
self.nodes[0].softrejectblock(b2_hash, 3)
self.nodes[0].waitforblockheight(4)
assert_equal(self.nodes[0].getbestblockhash(), b4a_hash)
# call preciousblock to verify it will not delete block candidates with soft rejected status.
self.nodes[0].preciousblock(b4a_hash)
# reconsider b2_hash to verify we are still able to reach previous longest chain.
self.nodes[0].acceptblock(b2_hash)
assert_equal(self.nodes[0].getbestblockhash(), b5_hash)
def run_test(self):
# Get out of IBD
self.nodes[0].generate(1)
self.sync_all()
# Stop node so we can restart it with our connections
self.stop_node(0)
# Disconnect node1 and node2 for now
disconnect_nodes_bi(self.nodes, 1, 2)
connArgs = [ { "versionNum":MY_VERSION }, { "versionNum":70015 } ]
with self.run_node_with_connections("Test old and new protocol versions", 0, self.nodeArgs, number_of_connections=2,
connArgs=connArgs, cb_class=MyConnCB) as (newVerConn,oldVerConn):
assert newVerConn.connected
assert oldVerConn.connected
# Generate small block, verify we get it over both connections
self.nodes[0].generate(1)
wait_until(lambda: newVerConn.cb.block_count == 1, timeout=int(30 * self.options.timeoutfactor))
wait_until(lambda: oldVerConn.cb.block_count == 1, timeout=int(30 * self.options.timeoutfactor))
# Get us a spendable output
coinbase_tx = self.make_coinbase(newVerConn)
self.nodes[0].generate(100)
# Put some large txns into the nodes mempool until it exceeds 4GB in size
self.create_and_send_transactions(newVerConn, coinbase_tx, 5)
# Reconnect node0 and node2 and sync their blocks. Node2 will end up receiving the
# large block via compact blocks
connect_nodes(self.nodes, 0, 2)
sync_blocks(itemgetter(0,2)(self.nodes))
# Mine a >4GB block, verify we only get it over the new connection
old_block_count = newVerConn.cb.block_count
logger.info("Mining a big block")
self.nodes[0].generate(1)
assert(self.nodes[0].getmempoolinfo()['size'] == 0)
logger.info("Waiting for block to arrive at test")
wait_until(lambda: newVerConn.cb.block_count == old_block_count+1, timeout=int(1200 * self.options.timeoutfactor))
# Look for log message saying we won't send to old peer
wait_until(lambda: check_for_log_msg(self, "cannot be sent because it exceeds max P2P message limit", "/node0"))
# Verify node2 gets the big block via a (not very) compact block
wait_until(lambda: self.nodes[0].getbestblockhash() == self.nodes[2].getbestblockhash())
peerinfo = self.nodes[2].getpeerinfo()
assert(peerinfo[0]['bytesrecv_per_msg']['cmpctblock'] > 0)
assert(peerinfo[0]['bytesrecv_per_msg']['blocktxn'] > 0)
# Reconnect node0 to node1
logger.info("Syncing bitcoind nodes to big block")
connect_nodes(self.nodes, 0, 1)
self.sync_all(timeout=int(1200 * self.options.timeoutfactor))
# Verify node1 also got the big block
assert(self.nodes[0].getbestblockhash() == self.nodes[1].getbestblockhash())
def run_test(self):
# Synchronize mc_node1, mc_node2 and mc_node3, then disconnect them.
self.sync_all()
disconnect_nodes_bi(self.nodes, 0, 1)
disconnect_nodes_bi(self.nodes, 0, 2)
mc_node1 = self.nodes[0]
mc_node2 = self.nodes[1]
mc_node3 = self.nodes[2]
sc_node1 = self.sc_nodes[0]
# Test 1: Generate SC block, when all MC blocks already synchronized.
# Generate 1 SC block
scblock_id0 = generate_next_blocks(sc_node1, "first node", 1)[0]
# Verify that SC block has no MC headers, ref data, ommers
check_mcheaders_amount(0, scblock_id0, sc_node1)
check_mcreferencedata_amount(0, scblock_id0, sc_node1)
check_ommers_amount(0, scblock_id0, sc_node1)
# Test 2: Generate SC block, when new MC blocks following the same Tip appear.
# Generate 1 MC block on the first MC node
mcblock_hash1 = mc_node1.generate(1)[0]
# Generate 1 SC block
scblock_id1 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id1, sc_node1)
# Verify that SC block contains MC block as a MainchainReference
check_mcheaders_amount(1, scblock_id1, sc_node1)
check_mcreferencedata_amount(1, scblock_id1, sc_node1)
check_mcreference_presence(mcblock_hash1, scblock_id1, sc_node1)
check_ommers_amount(0, scblock_id1, sc_node1)
# Test 3: Generate SC block, when new MC blocks following different Tip appear. Ommers expected.
# Generate another 2 MC blocks on the second MC node
fork_mcblock_hash1 = mc_node2.generate(1)[0]
fork_mcblock_hash2 = mc_node2.generate(1)[0]
# Connect and synchronize MC node 1 to MC node 2
connect_nodes_bi(self.nodes, 0, 1)
self.sync_nodes([mc_node1, mc_node2])
# MC Node 1 should replace mcblock_hash1 Tip with [fork_mcblock_hash1, fork_mcblock_hash2]
assert_equal(fork_mcblock_hash2, mc_node1.getbestblockhash())
# Generate 1 SC block
scblock_id2 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id2, sc_node1)
# Verify that SC block contains newly created MC blocks as a MainchainHeaders and no MainchainRefData
check_mcheaders_amount(2, scblock_id2, sc_node1)
check_mcreferencedata_amount(0, scblock_id2, sc_node1)
check_mcheader_presence(fork_mcblock_hash1, scblock_id2, sc_node1)
check_mcheader_presence(fork_mcblock_hash2, scblock_id2, sc_node1)
# Verify that SC block contains 1 Ommer with 1 MainchainHeader
check_ommers_amount(1, scblock_id2, sc_node1)
check_ommers_cumulative_score(1, scblock_id2, sc_node1)
check_ommer(scblock_id1, [mcblock_hash1], scblock_id2, sc_node1)
# Test 4: Generate SC block, when new MC blocks following the same Tip appear + 2 previous RefData expecting to be synchronized.
# Generate 2 more mc blocks in MC node 1
mcblock_hash3 = mc_node1.generate(1)[0]
mcblock_hash4 = mc_node1.generate(1)[0]
# Generate SC block
scblock_id3 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id2, scblock_id3, sc_node1)
# Verify that SC block MainchainHeaders and MainchainRefData
check_mcheaders_amount(2, scblock_id3, sc_node1)
check_mcreferencedata_amount(3, scblock_id3, sc_node1)
check_mcheader_presence(mcblock_hash3, scblock_id3, sc_node1)
check_mcheader_presence(mcblock_hash4, scblock_id3, sc_node1)
check_mcreferencedata_presence(fork_mcblock_hash1, scblock_id3,
sc_node1)
check_mcreferencedata_presence(fork_mcblock_hash2, scblock_id3,
sc_node1)
check_mcreferencedata_presence(mcblock_hash3, scblock_id3, sc_node1)
check_ommers_amount(0, scblock_id3, sc_node1)
# Generate SC block to synchronize the rest of MC blocks
scblock_id4 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id3, scblock_id4, sc_node1)
# Verify that SC block MainchainHeaders and MainchainRefData
check_mcheaders_amount(0, scblock_id4, sc_node1)
check_mcreferencedata_amount(1, scblock_id4, sc_node1)
check_mcreferencedata_presence(mcblock_hash4, scblock_id4, sc_node1)
check_ommers_amount(0, scblock_id4, sc_node1)
# Generate SC block with no MC data. Needed for further test
scblock_id5 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id4, scblock_id5, sc_node1)
check_mcheaders_amount(0, scblock_id5, sc_node1)
check_mcreferencedata_amount(0, scblock_id5, sc_node1)
check_ommers_amount(0, scblock_id5, sc_node1)
# Test 5: MC Node 3 generates MC blocks, that hust from sc creation tx containing block.
# After MC synchronization, SC node should create with recursive ommers.
# Generate another 6 blocks on MC node 3
another_fork_mcblocks_hashes = mc_node3.generate(5)
another_fork_tip_hash = another_fork_mcblocks_hashes[-1]
connect_nodes_bi(self.nodes, 0, 2)
self.sync_all()
# MC Node 1 should replace mcblock_hash4 Tip with another_fork_tip_hash
assert_equal(another_fork_tip_hash, mc_node1.getbestblockhash())
# Generate SC block
scblock_id6 = generate_next_blocks(sc_node1, "first node", 1)[0]
# print(json.dumps(sc_node1.block_findById(blockId=scblock_id6), indent=4))
check_scparent(scblock_id0, scblock_id6, sc_node1)
# Verify that SC block contains newly created MC blocks as a MainchainHeaders and no MainchainRefData
check_mcheaders_amount(5, scblock_id6, sc_node1)
check_mcreferencedata_amount(0, scblock_id6, sc_node1)
for mchash in another_fork_mcblocks_hashes:
check_mcheader_presence(mchash, scblock_id6, sc_node1)
# Verify that SC block contains 4 Ommers
check_ommers_amount(4, scblock_id6, sc_node1)
# Verify Ommers cumulative score, that must also count 1 subommer
check_ommers_cumulative_score(5, scblock_id6, sc_node1)
expected_ommers_ids = [
scblock_id2, scblock_id3, scblock_id4, scblock_id5
]
for ommer_id in expected_ommers_ids:
check_ommer(ommer_id, [], scblock_id6, sc_node1)
check_subommer(scblock_id2, scblock_id1, [mcblock_hash1], scblock_id6,
sc_node1)
def run_test(self):
mc_node1 = self.nodes[0]
mc_node2 = self.nodes[1]
sc_node1 = self.sc_nodes[0]
sc_node2 = self.sc_nodes[1]
# Synchronize mc_node1 and mc_node2
self.sync_all()
genesis_sc_block_id = sc_node1.block_best()["result"]
# Generate 1 SC block without any MC block info
scblock_id0 = generate_next_blocks(sc_node1, "first node", 1)[0]
# Verify that SC block has no MC headers, ref data, ommers
check_mcheaders_amount(0, scblock_id0, sc_node1)
check_mcreferencedata_amount(0, scblock_id0, sc_node1)
check_ommers_amount(0, scblock_id0, sc_node1)
# Generate 1 MC block on the first MC node
mcblock_hash1 = mc_node1.generate(1)[0]
# Synchronize mc_node1 and mc_node2, then disconnect them.
self.sync_all()
disconnect_nodes_bi(self.nodes, 0, 1)
# Generate 1 more MC block on the first MC node
mcblock_hash2 = mc_node1.generate(1)[0]
# Generate 1 SC block, that should put 2 MC blocks inside
# SC block contains MC `mcblock_hash1` that is common for MC Nodes 1,2 and `mcblock_hash2` that is known only by MC Node 1.
scblock_id1 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id1, sc_node1)
# Verify that SC block contains MC block as a MainchainReference
check_mcheaders_amount(2, scblock_id1, sc_node1)
check_mcreferencedata_amount(2, scblock_id1, sc_node1)
check_mcreference_presence(mcblock_hash1, scblock_id1, sc_node1)
check_mcreference_presence(mcblock_hash2, scblock_id1, sc_node1)
check_ommers_amount(0, scblock_id1, sc_node1)
# Generate another 2 MC blocks on the second MC node
fork_mcblock_hash1 = mc_node2.generate(1)[0]
fork_mcblock_hash2 = mc_node2.generate(1)[0]
# Connect and synchronize MC node 1 to MC node 2
connect_nodes_bi(self.nodes, 0, 1)
self.sync_all()
# MC Node 1 should replace mcblock_hash2 Tip with [fork_mcblock_hash1, fork_mcblock_hash2]
assert_equal(fork_mcblock_hash2, mc_node1.getbestblockhash())
# Generate 1 SC block
# SC block must contains `mcblock_hash1` again and add fork_mcblock_hash1,2
# Ommered block also contains common `mcblock_hash1`, but moreover an orphaned `mcblock_hash2`
scblock_id2 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id2, sc_node1)
# Verify that SC block contains newly created MC blocks as a MainchainHeaders and no MainchainRefData
check_mcheaders_amount(3, scblock_id2, sc_node1)
check_mcreferencedata_amount(0, scblock_id2, sc_node1)
check_mcheader_presence(mcblock_hash1, scblock_id2, sc_node1)
check_mcheader_presence(fork_mcblock_hash1, scblock_id2, sc_node1)
check_mcheader_presence(fork_mcblock_hash2, scblock_id2, sc_node1)
# Verify that SC block contains 1 Ommer with 1 MainchainHeader
check_ommers_amount(1, scblock_id2, sc_node1)
check_ommers_cumulative_score(1, scblock_id2, sc_node1)
check_ommer(scblock_id1, [mcblock_hash1, mcblock_hash2], scblock_id2, sc_node1)
assert_equal(genesis_sc_block_id, sc_node2.block_best()["result"])
connect_sc_nodes(self.sc_nodes[0], 1)
self.sc_sync_all()
assert_equal(sc_node1.block_best()["result"], sc_node2.block_best()["result"])
def _zmq_test(self):
block_hashes = self.nodes[0].generate(101)
"""Test case 1"""
tx_hash1 = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(),
1.0)
tx_hash2 = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(),
1.0)
block_hash1 = self.nodes[0].generate(1)[0]
# sync blocks so we are synchronized later in test
sync_blocks(self.nodes)
# receive notifications for txs to be included in block
msg1 = self.zmqSubSocket.recv_multipart()
assert_equal(msg1[0], b"removedfrommempoolblock")
msg1_body = json.loads(msg1[1])
assert_equal(msg1_body["reason"], "included-in-block")
msg2 = self.zmqSubSocket.recv_multipart()
assert_equal(msg2[0], b"removedfrommempoolblock")
msg2_body = json.loads(msg2[1])
assert_equal(msg2_body["reason"], "included-in-block")
removed_tx = [msg1_body["txid"], msg2_body["txid"]]
assert_equal(tx_hash1 in removed_tx and tx_hash2 in removed_tx, True)
"""Test case 2"""
# bring txs back to mempool
self.nodes[0].invalidateblock(block_hash1)
# invalidate again so the coins that txs uses are immature
self.nodes[0].invalidateblock(block_hashes[len(block_hashes) - 2])
# receive notifications for txs about reorg mempool removal reason
msg1 = self.zmqSubSocket.recv_multipart()
assert_equal(msg1[0], b"removedfrommempoolblock")
msg1_body = json.loads(msg1[1])
assert_equal(msg1_body["reason"], "reorg")
msg2 = self.zmqSubSocket.recv_multipart()
assert_equal(msg2[0], b"removedfrommempoolblock")
msg2_body = json.loads(msg2[1])
assert_equal(msg2_body["reason"], "reorg")
removed_tx = [msg1_body["txid"], msg2_body["txid"]]
assert_equal(tx_hash1 in removed_tx and tx_hash2 in removed_tx, True)
"""Test case 3"""
# bring both nodes on same height
self.nodes[1].invalidateblock(block_hashes[len(block_hashes) - 2])
self.nodes[0].generate(4)
sync_blocks(self.nodes)
unspent = self.nodes[0].listunspent()[0]
# create tx with spendable output for both nodes to use
tx_spendable_output = CTransaction()
tx_outs = [CTxOut(4500000000, CScript([OP_TRUE]))]
tx_spendable_output.vout = tx_outs
tx_spendable_output.vin = [
CTxIn(COutPoint(int(unspent["txid"], 16), 0))
]
tx_hex = self.nodes[0].signrawtransaction(
ToHex(tx_spendable_output))['hex']
self.nodes[0].sendrawtransaction(tx_hex, True)
tx_spendable_output = FromHex(CTransaction(), tx_hex)
tx_spendable_output.rehash()
self.nodes[0].generate(1)
# ignore included in block message
_ = self.zmqSubSocket.recv_multipart()
sync_blocks(self.nodes)
# disconnect nodes and create transaction tx2 on node1 and mine a block
# then create tx1 on node0 that use same output as tx2.
disconnect_nodes_bi(self.nodes, 0, 1)
tx2 = CTransaction()
tx_outs = [CTxOut(4400000000, CScript([OP_TRUE]))]
tx2.vout = tx_outs
tx2.vin = [CTxIn(COutPoint(int(tx_spendable_output.hash, 16), 0))]
tx_hex = self.nodes[1].signrawtransaction(ToHex(tx2))['hex']
tx2_size = len(tx_hex) / 2
tx2 = FromHex(CTransaction(), tx_hex)
tx2.rehash()
self.nodes[1].sendrawtransaction(tx_hex, True)
blockhash = self.nodes[1].generate(1)[0]
tx1 = CTransaction()
tx_outs = [CTxOut(4300000000, CScript([OP_TRUE]))]
tx1.vout = tx_outs
tx1.vin = [CTxIn(COutPoint(int(tx_spendable_output.hash, 16), 0))]
tx_hex = self.nodes[0].signrawtransaction(ToHex(tx1))['hex']
tx1 = FromHex(CTransaction(), tx_hex)
tx1.rehash()
self.nodes[0].sendrawtransaction(tx_hex, True)
# connect nodes again and sync blocks, we now expect to get conflict for tx1
# because tx2 that uses same output as tx1 is already in block.
connect_nodes_bi(self.nodes, 0, 1)
sync_blocks(self.nodes)
msg = self.zmqSubSocket.recv_multipart()
assert_equal(msg[0], b"discardedfrommempool")
body = json.loads(msg[1])
assert_equal(body["reason"], "collision-in-block-tx")
assert_equal(body["txid"], tx1.hash)
assert_equal(body["collidedWith"]["txid"], tx2.hash)
assert_equal(body["collidedWith"]["size"], tx2_size)
assert_equal(body["blockhash"], blockhash)
"""Test case 4"""
# create tx with spendable output for both nodes to use
unspent = self.nodes[0].listunspent()[0]
tx_spendable_output = CTransaction()
tx_outs = [CTxOut(4500000000, CScript([OP_TRUE]))]
tx_spendable_output.vout = tx_outs
tx_spendable_output.vin = [
CTxIn(COutPoint(int(unspent["txid"], 16), 0))
]
tx_hex = self.nodes[0].signrawtransaction(
ToHex(tx_spendable_output))['hex']
self.nodes[0].sendrawtransaction(tx_hex, True)
tx_spendable_output = FromHex(CTransaction(), tx_hex)
tx_spendable_output.rehash()
self.nodes[0].generate(5)
# ignore included in block message
_ = self.zmqSubSocket.recv_multipart()
sync_blocks(self.nodes)
# disconnect nodes; mine few blocks on n1; create transaction tx2 on node1 and mine a block
# then create tx1 on node0 that use same output as tx2.
disconnect_nodes_bi(self.nodes, 0, 1)
self.nodes[1].generate(5)
tx2 = CTransaction()
tx_outs = [CTxOut(4400000000, CScript([OP_TRUE]))]
tx2.vout = tx_outs
tx2.vin = [CTxIn(COutPoint(int(tx_spendable_output.hash, 16), 0))]
tx_hex = self.nodes[1].signrawtransaction(ToHex(tx2))['hex']
tx2_size = len(tx_hex) / 2
tx2 = FromHex(CTransaction(), tx_hex)
tx2.rehash()
self.nodes[1].sendrawtransaction(tx_hex, True)
blockhash_tx2 = self.nodes[1].generate(1)[0]
tx1 = CTransaction()
tx_outs = [CTxOut(4300000000, CScript([OP_TRUE]))]
tx1.vout = tx_outs
tx1.vin = [CTxIn(COutPoint(int(tx_spendable_output.hash, 16), 0))]
tx_hex = self.nodes[0].signrawtransaction(ToHex(tx1))['hex']
tx1 = FromHex(CTransaction(), tx_hex)
tx1.rehash()
self.nodes[0].sendrawtransaction(tx_hex, True)
self.nodes[0].generate(1)
# ignore included in block message
_ = self.zmqSubSocket.recv_multipart()
# connect nodes again to cause reorg to n1 chain, we now expect to
# get conflict for tx1, because tx2 that uses same input as tx1 is already
# in block on longer chain.
connect_nodes_bi(self.nodes, 0, 1)
sync_blocks(self.nodes)
msg = self.zmqSubSocket.recv_multipart()
assert_equal(msg[0], b"discardedfrommempool")
body = json.loads(msg[1])
assert_equal(body["reason"], "collision-in-block-tx")
assert_equal(body["txid"], tx1.hash)
assert_equal(body["collidedWith"]["txid"], tx2.hash)
assert_equal(body["collidedWith"]["size"], tx2_size)
assert_equal(body["blockhash"], blockhash_tx2)
def run_test(self):
# Synchronize mc_node1, mc_node2 and mc_node3, then disconnect them.
self.sync_all()
disconnect_nodes_bi(self.nodes, 0, 1)
disconnect_nodes_bi(self.nodes, 0, 2)
mc_node1 = self.nodes[0]
mc_node2 = self.nodes[1]
mc_node3 = self.nodes[2]
sc_node1 = self.sc_nodes[0]
# Test 1: Generate SC block, when all MC blocks already synchronized.
# Generate 1 SC block
scblock_id0 = generate_next_blocks(sc_node1, "first node", 1)[0]
# Verify that SC block has no MC headers, ref data, ommers
check_mcheaders_amount(0, scblock_id0, sc_node1)
check_mcreferencedata_amount(0, scblock_id0, sc_node1)
check_ommers_amount(0, scblock_id0, sc_node1)
# Test 2: Generate SC block, when new MC block following the same Tip appear.
# Generate 1 MC block on the first MC node
mcblock_hash1 = mc_node1.generate(1)[0]
# Sync MC nodes 1 and 3 once
connect_nodes_bi(self.nodes, 0, 2)
self.sync_nodes([mc_node1, mc_node3])
disconnect_nodes_bi(self.nodes, 0, 2)
# Generate 1 SC block
scblock_id1 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id1, sc_node1)
# Verify that SC block contains MC block as a MainchainReference
check_mcheaders_amount(1, scblock_id1, sc_node1)
check_mcreferencedata_amount(1, scblock_id1, sc_node1)
check_mcreference_presence(mcblock_hash1, scblock_id1, sc_node1)
check_ommers_amount(0, scblock_id1, sc_node1)
# Test 3: Generate SC block, when new MC blocks following different Tip appear. Ommers expected.
# Generate another 2 MC blocks on the second MC node
fork_mcblock_hash1 = mc_node2.generate(1)[0]
fork_mcblock_hash2 = mc_node2.generate(1)[0]
# Connect and synchronize MC node 1 to MC node 2
connect_nodes_bi(self.nodes, 0, 1)
self.sync_nodes([mc_node1, mc_node2])
# MC Node 1 should replace mcblock_hash1 Tip with [fork_mcblock_hash1, fork_mcblock_hash2]
assert_equal(fork_mcblock_hash2, mc_node1.getbestblockhash())
# Generate 1 SC block
scblock_id2 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id2, sc_node1)
# Verify that SC block contains newly created MC blocks as a MainchainHeaders and no MainchainRefData
check_mcheaders_amount(2, scblock_id2, sc_node1)
check_mcreferencedata_amount(0, scblock_id2, sc_node1)
check_mcheader_presence(fork_mcblock_hash1, scblock_id2, sc_node1)
check_mcheader_presence(fork_mcblock_hash2, scblock_id2, sc_node1)
# Verify that SC block contains 1 Ommer with 1 MainchainHeader
check_ommers_amount(1, scblock_id2, sc_node1)
check_ommers_cumulative_score(1, scblock_id2, sc_node1)
check_ommer(scblock_id1, [mcblock_hash1], scblock_id2, sc_node1)
# Test 4: Generate SC block, when new MC blocks following previous Tip appear and lead to chain switching again.
# Ommers expected. Subommers expected with mc blocks for the same MC branch as current SC block,
# but orphaned to parent Ommer MC headers.
# Generate 2 more mc blocks in MC node 3
mcblock_hash2 = mc_node3.generate(1)[0]
mcblock_hash3 = mc_node3.generate(1)[0]
# Sync MC nodes 1 and 3 once
connect_nodes_bi(self.nodes, 0, 2)
self.sync_nodes([mc_node1, mc_node3])
disconnect_nodes_bi(self.nodes, 0, 2)
# MC Node 1 should replace back fork_mcblock_hash2 Tip with [mcblock_hash1, mcblock_hash2, mcblock_hash3]
assert_equal(mcblock_hash3, mc_node1.getbestblockhash())
# Generate SC block
scblock_id3 = generate_next_blocks(sc_node1, "first node", 1)[0]
check_scparent(scblock_id0, scblock_id3, sc_node1)
# Verify that SC block contains newly created MC blocks as a MainchainHeaders and no MainchainRefData
check_mcheaders_amount(3, scblock_id3, sc_node1)
check_mcreferencedata_amount(0, scblock_id3, sc_node1)
check_mcheader_presence(mcblock_hash1, scblock_id3, sc_node1)
check_mcheader_presence(mcblock_hash2, scblock_id3, sc_node1)
check_mcheader_presence(mcblock_hash3, scblock_id3, sc_node1)
# Verify Ommers cumulative score, that must also count 1 subommer
check_ommers_cumulative_score(2, scblock_id3, sc_node1)
# Verify that SC block contains 1 Ommer with 2 MainchainHeader
check_ommers_amount(1, scblock_id3, sc_node1)
check_ommer(scblock_id2, [fork_mcblock_hash1, fork_mcblock_hash2],
scblock_id3, sc_node1)
# Verify that Ommer contains 1 subommer with 1 MainchainHeader
check_subommer(scblock_id2, scblock_id1, [mcblock_hash1], scblock_id3,
sc_node1)
def run_test(self):
for node in self.nodes:
self.consolidation_factor = int(
node.getnetworkinfo()['minconsolidationfactor'])
self.minConfirmations = int(
node.getnetworkinfo()['minconfconsolidationinput'])
self.log.info("consolidation factor: {}".format(
self.consolidation_factor))
self.log.info("minimum input confirmations: {}".format(
self.minConfirmations))
# Disconnect nodes before each generate RPC. On a busy environment generate
# RPC might not create the provided number of blocks. While nodes are communicating
# P2P messages can cause generateBlocks function to skip a block. Check the comment
# in generateBlocks function for details.
disconnect_nodes_bi(self.nodes, 0, 1)
node.generate(300)
connect_nodes_bi(self.nodes, 0, 1)
# test ratio between size of input script and size of output script
tx_hex = self.create_and_sign_tx(node, 1, min_confirmations=1)
tx = FromHex(CTransaction(), tx_hex)
tx.rehash()
sin = len(getInputScriptPubKey(node, tx.vin[0], 0))
sout = len(tx.vout[0].scriptPubKey)
enough_inputs = sout * self.consolidation_factor // sin
enough_inputs = max(enough_inputs, 2)
enough_confirmations = self.minConfirmations
# FAILING CONDITION: input_sizes <= consolidation_factor * output_size
# We assume scriptSig ~ 4 * scriptPubKey
tx_hex = self.create_and_sign_tx(
node,
in_count=enough_inputs - 1,
min_confirmations=enough_confirmations)
assert_raises_rpc_error(-26, "66: insufficient priority",
node.sendrawtransaction, tx_hex)
self.log.info("test 1: PASS")
# FAILING CONDITION: not enough input confirmations
tx_hex = self.create_and_sign_tx(
node,
in_count=enough_inputs,
min_confirmations=enough_confirmations - 1)
assert_raises_rpc_error(-26, "66: insufficient priority",
node.sendrawtransaction, tx_hex)
self.log.info("test 2: PASS")
# ALL CONDITIONS MET: must succeed
tx_hex = self.create_and_sign_tx(
node,
in_count=enough_inputs,
min_confirmations=enough_confirmations)
txid = node.sendrawtransaction(tx_hex)
node.generate(1)
tx = node.getrawtransaction(txid, 1)
confirmations = tx.get('confirmations', 0)
assert_equal(confirmations, 1)
self.log.info("test 3: PASS")
# Blocks must be synced because we do not want to start generating new blocks on node1 in the next loop iteration
# before node1 has received all blocks generated on node0 and all pending P2P block requests have completed.
sync_blocks(self.nodes)
# Verify deprecated -minconsolidationinputmaturity is an alias to -minconfconsolidationinput
self.log.info("Restarting nodes to test config options...")
self.stop_nodes()
self.extra_args[0].append("-minconsolidationinputmaturity=99")
self.start_nodes(self.extra_args)
sync_blocks(self.nodes)
assert_equal(
99, self.nodes[0].getnetworkinfo()['minconfconsolidationinput'])
assert_equal(
99,
self.nodes[0].getnetworkinfo()['minconsolidationinputmaturity'])
# Verify deprecation warning is logged
self.stop_nodes()
deprecation_log = False
for line in open(
glob.glob(self.options.tmpdir + "/node0" +
"/regtest/bitcoind.log")[0]):
if f"Option -minconsolidationinputmaturity is deprecated, use -minconfconsolidationinput instead" in line:
deprecation_log = True
#self.log.info("Found line: %s", line.strip())
break
assert (deprecation_log)
# Verify init error when deprecated and new option are used together
self.extra_args[0].append("-minconfconsolidationinput=99")
self.assert_start_raises_init_error(
0, self.extra_args[0],
'Cannot use both -minconfconsolidationinput and -minconsolidationinputmaturity (deprecated) at the same time'
)
def run_test(self):
# Test 1:
# 1. fund an attacker for the test on node0
# 2. progress to block height 200
# 3. sync all nodes
# 4. disconnect the two nodes forking at block height 200
# 5. spend attackers fund in node0 and double spend them in node1
# 6. Assert that the two chains actually contain the attackers double-spends
attacker = User(b"horsebattery")
friend0_of_attacker = User(b"fatstack")
friend1_of_attacker = User(b"fatheap")
node0 = self.nodes[0] # victim node
node1 = self.nodes[1] # node under control of attacker
self.log.info("fund attacker. We fund him at height 200 -2")
self.log.info(
"just for debugging convenience. We plan to fork at height 200")
coinbase_tx = self.make_coinbase(node0)
node0.generate(self.FORK_ROOT_HEIGHT - 2)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT - 1)
self.log.info("fund attacker")
funding_tx = self.send_funds_to_attacker(node0, attacker, coinbase_tx)
node0.generate(1)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT + 0)
self.log.info(
"sync nodes. All nodes have the same chain and funding transactions after syncing"
)
connect_nodes_bi(self.nodes, 0, 1)
sync_blocks(self.nodes)
disconnect_nodes_bi(self.nodes, 0, 1)
# fork from here
assert (node0.getblockcount() == node1.getblockcount())
self.log.info("spends attackers funds in node0")
for i in range(self.nbDoubleSpends):
attacker.spend_to_pkh(node0, funding_tx, i,
funding_tx.vout[i].nValue,
friend0_of_attacker.pubkey)
node0.generate(1)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT + 1)
self.log.info("double spend attacker funds in node1")
for i in range(self.nbDoubleSpends):
attacker.spend_to_pkh(node1, funding_tx, i,
funding_tx.vout[i].nValue,
friend1_of_attacker.pubkey)
node1.generate(1)
first_bad_block = node1.getbestblockhash()
assert (node1.getblockcount() == self.FORK_ROOT_HEIGHT + 1)
self.log.info(
"check that funds have been double spent to different addresses")
assert (self.contains_double_spends() == self.nbDoubleSpends)
# Test 2.
# 1. Progress the two competing chains in node0 and node1 to different lengths (configurable).
# node1 shall hold the longer chain and is the one controlled by the attacker.
# The two nodes are not connected to each other directly or indirectly and at this point
# contain the doulbe-spends we have prapared.
# 2. connect the nodes and sync them to force a reorg
# 3. Assert that all double-spends disappeared - which nontheless means the attack succeeded.
assert (self.lenChain0 <= self.lenChain1)
self.log.info("Mine lenChain0 blocks on node0")
node0.generate(self.lenChain0 - 1)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain0)
self.log.info("Mine competing lenChain1 blocks on node1")
node1.generate(self.lenChain1 - 1)
assert (node1.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain1)
self.log.info("Connect nodes to force a reorg")
connect_nodes(self.nodes, 1, 0)
sync_blocks(self.nodes[0:2])
if self.lenChain1 > self.lenChain0:
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain1)
else:
assert (node1.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain0)
self.log.info("check that both nodes have the same chains")
lastblock0 = node0.getbestblockhash()
lastblock1 = node1.getbestblockhash()
assert (lastblock0 == lastblock1)
self.log.info("check that double-spends have been removed")
assert (self.contains_double_spends() == 0)
# Test 3: Assert that safemode has been reached
try:
node0.rpc.getbalance()
assert False, "Should not come to here, should raise exception in line above."
except JSONRPCException as e:
assert e.error[
"message"] == "Safe mode: Warning: The network does not appear to fully agree! Some miners appear to be experiencing issues. A large valid fork has been detected."
# Test 4: Assert that safemode is exited if the offending chain is invalidated
node0.invalidateblock(first_bad_block)
node0.ignoresafemodeforblock(first_bad_block)
balance = node0.rpc.getbalance()
assert (balance != None)
def run_test(self):
# Test 1:
# 1. fund an attacker for the test on node0
# 2. progress to block height 200
# 3. sync all nodes
# 4. disconnect the two nodes forking at block height 200
# 5. spend attackers fund in node0 and double spend them in node1
# 6. Assert that the two chains actually contain the attackers double spends
attacker = User(b"horsebattery")
friend0_of_attacker = User(b"fatstack")
friend1_of_attacker = User(b"fatheap")
node0 = self.nodes[0] # victim node
node1 = self.nodes[1] # node under control of attacker
# The dsdetector is conneget_JSON_notificationcted to node- to which it sends ds messages
dsdetector = MockDsdetector(self, node0)
# The exchange is connected to a node0 in which it can invalidate chains
# Additionally the Exchange listens to webhook messages on port 8888.
# node0 will send webhook messages because node0 is connectged to the dsdetector
exchange = Exchange(self, node0)
exchange.start_webhook_server()
self.log.info("fund attacker. We fund him at height 200 -2")
self.log.info(
"just for debugging convenience. We plan to fork at height 200")
coinbase_tx = self.make_coinbase(node0)
node0.generate(self.FORK_ROOT_HEIGHT - 2)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT - 1)
self.log.info("fund attacker")
funding_tx = self.send_funds_to_attacker(node0, attacker, coinbase_tx)
node0.generate(1)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT + 0)
self.log.info(
"sync nodes. All nodes have the same chain and funding transactions after syncing"
)
connect_nodes_bi(self.nodes, 0, 1)
sync_blocks(self.nodes)
disconnect_nodes_bi(self.nodes, 0, 1)
# fork from here
assert (node0.getblockcount() == node1.getblockcount())
self.log.info("spends attackers funds in node0")
for i in range(self.nbDoubleSpends):
attacker.spend_to_pkh(node0, funding_tx, i,
funding_tx.vout[i].nValue,
friend0_of_attacker.pubkey)
node0.generate(1)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT + 1)
self.log.info("double spend attacker funds in node1")
for i in range(self.nbDoubleSpends):
attacker.spend_to_pkh(node1, funding_tx, i,
funding_tx.vout[i].nValue,
friend1_of_attacker.pubkey)
node1.generate(1)
first_bad_block = node1.getbestblockhash()
assert (node1.getblockcount() == self.FORK_ROOT_HEIGHT + 1)
self.log.info(
"check that funds have been double spent to different addresses")
assert (dsdetector.CheckForDoubleSpends(
self.nodes[0:2]) == self.nbDoubleSpends)
# Test 2.
# 1. Progress the two competing chains in node0 and node1 to different lengths (configurable).
# node1 shall hold the longer chain and is the one controlled by the attacker.
# The two nodes are not connected to each other directly or indirectly and at this point
# contain the doulbe spends we have prapared.
# 2. connect the nodes and sync them to force a reorg
# 3. Assert that all double spends disappeared - which nontheless means the attack succeeded.
self.log.info("Mine lenChain0 blocks on node0")
node0.generate(self.lenChain0 - 1)
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain0)
self.log.info("Mine competing lenChain1 blocks on node1")
node1.generate(self.lenChain1 - 1)
assert (node1.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain1)
self.log.info("Connect nodes to force a reorg")
# note that reorg may not happen with next safe mode specification and
# and safe mode may be entered
connect_nodes(self.nodes, 1, 0)
sync_blocks(self.nodes[0:2])
if self.lenChain1 > self.lenChain0:
assert (node0.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain1)
else:
assert (node1.getblockcount() == self.FORK_ROOT_HEIGHT +
self.lenChain0)
self.log.info("check that both nodes have the same chains")
lastblock0 = node0.getbestblockhash()
lastblock1 = node1.getbestblockhash()
assert (lastblock0 == lastblock1)
self.log.info("check that double spends have been removed")
assert (dsdetector.CheckForDoubleSpends(self.nodes[0:2]) == 0)
# Test 3: Assert that safemode has been reached
try:
node0.rpc.getbalance()
assert False, "Should not come to here, should raise exception in line above."
except JSONRPCException as e:
assert e.error[
"message"] == "Safe mode: Warning: The network does not appear to fully agree! Some miners appear to be experiencing issues. A large valid fork has been detected."
# Test 4: Assert that safemode is exited if the offending chain is invalidated
# We know a ds notification has been sent hence the exchange will react to this
# notification by invalidating the bad chain which also make sthe node exit safemode.
dsdetector.SendDsNotification()
while not exchange.CatchNotification_InvalidateIfRequired(
node0, first_bad_block):
time.sleep(1)
balance = node0.rpc.getbalance()
assert (balance != None)
exchange.stop_webhook_server()
