def run_test(self):
node = self.nodes[0]
node.add_p2p_connection(P2PDataStore())
p2pGetter = node.add_p2p_connection(P2PBlockGetter())
self.log.info("Submitting block with invalid auxpow...")
tip = node.getbestblockhash()
blk, blkHash = self.createBlock()
blk = self.addAuxpow(blk, blkHash, False)
assert_equal(node.submitblock(blk.serialize().hex()), "high-hash")
assert_equal(node.getbestblockhash(), tip)
self.log.info("Submitting block with valid auxpow...")
blk = self.addAuxpow(blk, blkHash, True)
assert_equal(node.submitblock(blk.serialize().hex()), None)
assert_equal(node.getbestblockhash(), blkHash)
self.log.info("Retrieving block through RPC...")
gotHex = node.getblock(blkHash, 0)
gotBlk = CBlock()
gotBlk.deserialize(BytesIO(hex_str_to_bytes(gotHex)))
gotBlk.rehash()
assert_equal("%064x" % int(gotBlk.hash, 16), blkHash)
self.log.info("Retrieving block through P2P...")
gotBlk = p2pGetter.getBlock(blkHash)
gotBlk.rehash()
assert_equal("%064x" % int(gotBlk.hash, 16), blkHash)
self.log.info("Sending block with invalid auxpow over P2P...")
tip = node.getbestblockhash()
blk, blkHash = self.createBlock()
blk = self.addAuxpow(blk, blkHash, False)
node.p2p.send_blocks_and_test([blk],
node,
force_send=True,
success=False,
reject_reason="high-hash")
assert_equal(node.getbestblockhash(), tip)
self.log.info("Sending the same block with valid auxpow...")
blk = self.addAuxpow(blk, blkHash, True)
node.p2p.send_blocks_and_test([blk], node, success=True)
assert_equal(node.getbestblockhash(), blkHash)
self.log.info("Retrieving block through RPC...")
gotHex = node.getblock(blkHash, 0)
gotBlk = CBlock()
gotBlk.deserialize(BytesIO(hex_str_to_bytes(gotHex)))
gotBlk.rehash()
assert_equal("%064x" % int(gotBlk.hash, 16), blkHash)
self.log.info("Retrieving block through P2P...")
gotBlk = p2pGetter.getBlock(blkHash)
gotBlk.rehash()
assert_equal("%064x" % int(gotBlk.hash, 16), blkHash)
def _zmq_test(self):
num_blocks = 5
self.log.info("Generate %(n)d blocks (and %(n)d coinbase txes)" % {"n": num_blocks})
genhashes = self.nodes[0].generatetoaddress(num_blocks, ADDRESS_BCRT1_UNSPENDABLE)
self.sync_all()
for x in range(num_blocks):
# Should receive the coinbase txid.
txid = self.hashtx.receive()
# Should receive the coinbase raw transaction.
hex = self.rawtx.receive()
tx = CTransaction()
tx.deserialize(BytesIO(hex))
tx.calc_sha256()
assert_equal(tx.hash, bytes_to_hex_str(txid))
# Should receive the generated block hash.
hash = bytes_to_hex_str(self.hashblock.receive())
assert_equal(genhashes[x], hash)
# The block should only have the coinbase txid.
assert_equal([bytes_to_hex_str(txid)], self.nodes[1].getblock(hash)["tx"])
# Should receive the generated raw block.
raw_block = self.rawblock.receive()
block = CBlock()
f = BytesIO(raw_block)
block.deserialize(f)
block.calc_sha256()
assert_equal(genhashes[x], block.hash)
if self.is_wallet_compiled():
self.log.info("Wait for tx from second node")
payment_txid = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 1.0)
self.sync_all()
# Should receive the broadcasted txid.
txid = self.hashtx.receive()
assert_equal(payment_txid, bytes_to_hex_str(txid))
# Should receive the broadcasted raw transaction.
hex = self.rawtx.receive()
assert_equal(payment_txid, bytes_to_hex_str(hash256(hex)))
self.log.info("Test the getzmqnotifications RPC")
assert_equal(self.nodes[0].getzmqnotifications(), [
{"type": "pubhashblock", "address": ADDRESS, "hwm": 1000},
{"type": "pubhashtx", "address": ADDRESS, "hwm": 1000},
{"type": "pubrawblock", "address": ADDRESS, "hwm": 1000},
{"type": "pubrawtx", "address": ADDRESS, "hwm": 1000},
])
assert_equal(self.nodes[1].getzmqnotifications(), [])
def _zmq_test(self):
num_blocks = 5
self.log.info("Generate %(n)d blocks (and %(n)d coinbase txes)" %
{"n": num_blocks})
genhashes = self.nodes[0].generate(num_blocks,
self.signblockprivkey_wif)
self.sync_all()
for x in range(num_blocks):
# Should receive the coinbase txid.
txid = self.hashtx.receive()
# Should receive the coinbase raw transaction.
hex = self.rawtx.receive()
tx = CTransaction()
tx.deserialize(BytesIO(hex))
tx.calc_sha256()
assert_equal(tx.hashMalFix, bytes_to_hex_str(txid))
# Should receive the generated block hash.
hash = bytes_to_hex_str(self.hashblock.receive())
assert_equal(genhashes[x], hash)
# The block should only have the coinbase txid.
assert_equal([bytes_to_hex_str(txid)],
self.nodes[1].getblock(hash)["tx"])
# Should receive the generated raw block.
block = CBlock()
block.deserialize(BytesIO(self.rawblock.receive()))
block.calc_sha256()
assert_equal(genhashes[x], block.hash)
self.log.info("Wait for tx from second node")
payment_txid = self.nodes[1].sendtoaddress(
self.nodes[0].getnewaddress(), 1.0)
self.sync_all()
# Should receive the broadcasted txid.
txid = self.hashtx.receive()
assert_equal(payment_txid, bytes_to_hex_str(txid))
# Should receive the broadcasted raw transaction.
hex = self.rawtx.receive()
tx = CTransaction()
tx.deserialize(BytesIO(hex))
tx.calc_sha256()
assert_equal(tx.hashMalFix, bytes_to_hex_str(txid))
def test_chainlock_publishers(self):
chain_lock_publishers = [
ZMQPublisher.hash_chain_lock, ZMQPublisher.raw_chain_lock,
ZMQPublisher.raw_chain_lock_sig
]
self.log.info("Testing %d ChainLock publishers" %
len(chain_lock_publishers))
# Subscribe to ChainLock messages
self.subscribe(chain_lock_publishers)
# Generate ChainLock
generated_hash = self.nodes[0].generate(1)[0]
self.wait_for_chainlocked_block_all_nodes(generated_hash)
rpc_best_chain_lock = self.nodes[0].getbestchainlock()
rpc_best_chain_lock_hash = rpc_best_chain_lock["blockhash"]
rpc_best_chain_lock_sig = rpc_best_chain_lock["signature"]
assert_equal(generated_hash, rpc_best_chain_lock_hash)
rpc_chain_locked_block = self.nodes[0].getblock(
rpc_best_chain_lock_hash)
rpc_chain_lock_height = rpc_chain_locked_block["height"]
rpc_chain_lock_hash = rpc_chain_locked_block["hash"]
assert_equal(generated_hash, rpc_chain_lock_hash)
# Validate hashchainlock
zmq_chain_lock_hash = bytes_to_hex_str(
self.receive(ZMQPublisher.hash_chain_lock).read(32))
assert_equal(zmq_chain_lock_hash, rpc_best_chain_lock_hash)
# Validate rawchainlock
zmq_chain_locked_block = CBlock()
zmq_chain_locked_block.deserialize(
self.receive(ZMQPublisher.raw_chain_lock))
assert (zmq_chain_locked_block.is_valid())
assert_equal(zmq_chain_locked_block.hash, rpc_chain_lock_hash)
# Validate rawchainlocksig
zmq_chain_lock_sig_stream = self.receive(
ZMQPublisher.raw_chain_lock_sig)
zmq_chain_locked_block = CBlock()
zmq_chain_locked_block.deserialize(zmq_chain_lock_sig_stream)
assert (zmq_chain_locked_block.is_valid())
zmq_chain_lock = msg_clsig()
zmq_chain_lock.deserialize(zmq_chain_lock_sig_stream)
assert_equal(zmq_chain_lock.height, rpc_chain_lock_height)
assert_equal(uint256_to_string(zmq_chain_lock.blockHash),
rpc_chain_lock_hash)
assert_equal(zmq_chain_locked_block.hash, rpc_chain_lock_hash)
assert_equal(bytes_to_hex_str(zmq_chain_lock.sig),
rpc_best_chain_lock_sig)
# Unsubscribe from ChainLock messages
self.unsubscribe(chain_lock_publishers)
def run_test(self):
node = self.nodes[0]
p2pStore = node.add_p2p_connection(P2PDataStore())
p2pGetter = node.add_p2p_connection(P2PBlockGetter())
self.log.info("Adding a block with non-zero hash in the auxpow...")
blk, blkHash = self.createBlock()
blk.auxpow.hashBlock = 12345678
blkHex = blk.serialize().hex()
assert_equal(node.submitblock(blkHex), None)
assert_equal(node.getbestblockhash(), blkHash)
self.log.info("Retrieving block through RPC...")
gotHex = node.getblock(blkHash, 0)
assert gotHex != blkHex
gotBlk = CBlock()
gotBlk.deserialize(BytesIO(hex_str_to_bytes(gotHex)))
assert_equal(gotBlk.auxpow.hashBlock, 0)
self.log.info("Retrieving block through P2P...")
gotBlk = p2pGetter.getBlock(blkHash)
assert_equal(gotBlk.auxpow.hashBlock, 0)
self.log.info("Sending zero-hash auxpow through RPC...")
blk, blkHash = self.createBlock()
blk.auxpow.hashBlock = 0
assert_equal(node.submitblock(blk.serialize().hex()), None)
assert_equal(node.getbestblockhash(), blkHash)
self.log.info("Sending zero-hash auxpow through P2P...")
blk, blkHash = self.createBlock()
blk.auxpow.hashBlock = 0
p2pStore.send_blocks_and_test([blk], node, success=True)
assert_equal(node.getbestblockhash(), blkHash)
self.log.info("Sending non-zero nIndex auxpow through RPC...")
blk, blkHash = self.createBlock()
blk.auxpow.nIndex = 42
assert_equal(node.submitblock(blk.serialize().hex()), None)
assert_equal(node.getbestblockhash(), blkHash)
self.log.info("Sending non-zero nIndex auxpow through P2P...")
blk, blkHash = self.createBlock()
blk.auxpow.nIndex = 42
p2pStore.send_blocks_and_test([blk], node, success=True)
assert_equal(node.getbestblockhash(), blkHash)
def run_test (self):
node = self.nodes[0]
p2pStore = node.add_p2p_connection (P2PDataStore ())
p2pGetter = node.add_p2p_connection (P2PBlockGetter ())
self.log.info ("Adding a block with non-zero hash in the auxpow...")
blk, blkHash = self.createBlock ()
blk.auxpow.hashBlock = 12345678
blkHex = blk.serialize ().hex ()
assert_equal (node.submitblock (blkHex), None)
assert_equal (node.getbestblockhash (), blkHash)
self.log.info ("Retrieving block through RPC...")
gotHex = node.getblock (blkHash, 0)
assert gotHex != blkHex
gotBlk = CBlock ()
gotBlk.deserialize (BytesIO (hex_str_to_bytes (gotHex)))
assert_equal (gotBlk.auxpow.hashBlock, 0)
self.log.info ("Retrieving block through P2P...")
gotBlk = p2pGetter.getBlock (blkHash)
assert_equal (gotBlk.auxpow.hashBlock, 0)
self.log.info ("Sending zero-hash auxpow through RPC...")
blk, blkHash = self.createBlock ()
blk.auxpow.hashBlock = 0
assert_equal (node.submitblock (blk.serialize ().hex ()), None)
assert_equal (node.getbestblockhash (), blkHash)
self.log.info ("Sending zero-hash auxpow through P2P...")
blk, blkHash = self.createBlock ()
blk.auxpow.hashBlock = 0
p2pStore.send_blocks_and_test ([blk], node, success=True)
assert_equal (node.getbestblockhash (), blkHash)
self.log.info ("Sending non-zero nIndex auxpow through RPC...")
blk, blkHash = self.createBlock ()
blk.auxpow.nIndex = 42
assert_equal (node.submitblock (blk.serialize ().hex ()), None)
assert_equal (node.getbestblockhash (), blkHash)
self.log.info ("Sending non-zero nIndex auxpow through P2P...")
blk, blkHash = self.createBlock ()
blk.auxpow.nIndex = 42
p2pStore.send_blocks_and_test ([blk], node, success=True)
assert_equal (node.getbestblockhash (), blkHash)
def unidirectional_node_sync_via_rpc(node_src, node_dest):
blocks_to_copy = []
blockhash = node_src.getbestblockhash()
while True:
try:
assert len(node_dest.getblock(blockhash, False)) > 0
break
except:
blocks_to_copy.append(blockhash)
blockhash = node_src.getblockheader(blockhash, True)['previousblockhash']
blocks_to_copy.reverse()
for blockhash in blocks_to_copy:
blockdata = node_src.getblock(blockhash, False)
block = CBlock()
block.deserialize(BytesIO(hex_str_to_bytes(blockdata)))
node_dest.p2p.send_message(msg_block(block))
node_dest.p2p.sync_with_ping()
def test_transaction_serialization(self):
legacy_addr = self.nodes[0].getnewaddress("", "legacy")
p2sh_addr = self.nodes[0].getnewaddress("", "p2sh-segwit")
bech32_addr = self.nodes[0].getnewaddress("", "bech32")
self.unknown_addr = self.nodes[1].getnewaddress()
# directly seed types of utxos required
self.nodes[0].generatetoaddress(1, legacy_addr)
self.nodes[0].generatetoaddress(1, p2sh_addr)
self.nodes[0].generatetoaddress(1, bech32_addr)
self.nodes[0].generatetoaddress(101, self.unknown_addr)
# grab utxos filtering by age
legacy_utxo = self.nodes[0].listunspent(104, 104)[0]
p2sh_utxo = self.nodes[0].listunspent(103, 103)[0]
bech32_utxo = self.nodes[0].listunspent(102, 102)[0]
submitted_txids = []
self.log.info("Testing legacy UTXO")
submitted_txids.append(
self.assert_tx_format_also_signed(legacy_utxo, segwit=False))
self.log.info("Testing p2sh UTXO")
submitted_txids.append(
self.assert_tx_format_also_signed(p2sh_utxo, segwit=True))
self.log.info("Testing bech32 UTXO")
submitted_txids.append(
self.assert_tx_format_also_signed(bech32_utxo, segwit=True))
blockhash = self.nodes[0].generate(1)[0]
hexblock = self.nodes[0].getblock(blockhash, 0)
block_details = self.nodes[0].getblock(blockhash, 2)
block = CBlock()
block.deserialize(BytesIO(hex_str_to_bytes(hexblock)))
assert (len(block.vtx) == len(submitted_txids) + 1)
assert_equal(len(block_details["tx"]), len(block.vtx))
for tx1, tx2 in zip(block.vtx[1:], block_details["tx"][1:]):
# no tuple wildcard, just re-used tx2 on first one
assert ((tx1.rehash(), tx2["wtxid"]) in submitted_txids)
assert ((tx2["txid"], tx2["hash"]) in submitted_txids)
assert ((tx2["txid"], tx2["wtxid"]) in submitted_txids)
block.rehash()
assert_equal(block.hash, self.nodes[0].getbestblockhash())
def test_transaction_serialization(self):
legacy_addr = self.nodes[0].getnewaddress("", "legacy")
p2sh_addr = self.nodes[0].getnewaddress("", "p2sh-segwit")
bech32_addr = self.nodes[0].getnewaddress("", "bech32")
self.unknown_addr = self.nodes[1].getnewaddress()
# directly seed types of utxos required
self.nodes[0].generatetoaddress(1, legacy_addr)
self.nodes[0].generatetoaddress(1, p2sh_addr)
self.nodes[0].generatetoaddress(1, bech32_addr)
self.nodes[0].generatetoaddress(101, self.unknown_addr)
# grab utxos filtering by age
legacy_utxo = self.nodes[0].listunspent(104, 104)[0]
p2sh_utxo = self.nodes[0].listunspent(103, 103)[0]
bech32_utxo = self.nodes[0].listunspent(102, 102)[0]
submitted_txids = []
self.log.info("Testing legacy UTXO")
submitted_txids.append(self.assert_tx_format_also_signed(legacy_utxo, segwit=False))
self.log.info("Testing p2sh UTXO")
submitted_txids.append(self.assert_tx_format_also_signed(p2sh_utxo, segwit=True))
self.log.info("Testing bech32 UTXO")
submitted_txids.append(self.assert_tx_format_also_signed(bech32_utxo, segwit=True))
blockhash = self.nodes[0].generate(1)[0]
hexblock = self.nodes[0].getblock(blockhash, 0)
block_details = self.nodes[0].getblock(blockhash, 2)
block = CBlock()
block.deserialize(BytesIO(hex_str_to_bytes(hexblock)))
assert(len(block.vtx) == len(submitted_txids) + 1)
assert_equal(len(block_details["tx"]), len(block.vtx))
for tx1, tx2 in zip(block.vtx[1:], block_details["tx"][1:]):
# no tuple wildcard, just re-used tx2 on first one
assert((tx1.rehash(), tx2["wtxid"]) in submitted_txids)
assert((tx2["txid"], tx2["hash"]) in submitted_txids)
assert((tx2["txid"], tx2["wtxid"]) in submitted_txids)
block.rehash()
assert_equal(block.hash, self.nodes[0].getbestblockhash())
def run_test(self):
self.description = "Covers the reorg with a zc public spend in vtx"
self.init_test()
DENOM_TO_USE = 10 # zc denomination
INITAL_MINED_BLOCKS = 321 # First mined blocks (rewards collected to mint)
MORE_MINED_BLOCKS = 105 # More blocks mined before spending zerocoins
# 1) Starting mining blocks
self.log.info("Mining %d blocks.." % INITAL_MINED_BLOCKS)
self.node.generate(INITAL_MINED_BLOCKS)
# 2) Mint 2 zerocoins
self.node.mintzerocoin(DENOM_TO_USE)
self.node.generate(1)
self.node.mintzerocoin(DENOM_TO_USE)
self.node.generate(1)
# 3) Mine additional blocks and collect the mints
self.log.info("Mining %d blocks.." % MORE_MINED_BLOCKS)
self.node.generate(MORE_MINED_BLOCKS)
self.log.info("Collecting mints...")
mints = self.node.listmintedzerocoins(True, False)
assert len(mints) == 2, "mints list has len %d (!= 2)" % len(mints)
# 4) Get unspent coins and chain tip
self.unspent = self.node.listunspent()
block_count = self.node.getblockcount()
pastBlockHash = self.node.getblockhash(block_count)
self.log.info(
"Block count: %d - Current best: %s..." %
(self.node.getblockcount(), self.node.getbestblockhash()[:5]))
pastBlock = CBlock()
pastBlock.deserialize(
BytesIO(hex_str_to_bytes(self.node.getblock(pastBlockHash,
False))))
checkpoint = pastBlock.nAccumulatorCheckpoint
# 5) get the raw zerocoin spend txes
self.log.info("Getting the raw zerocoin public spends...")
public_spend_A = self.node.createrawzerocoinpublicspend(
mints[0].get("serial hash"))
tx_A = CTransaction()
tx_A.deserialize(BytesIO(hex_str_to_bytes(public_spend_A)))
tx_A.rehash()
public_spend_B = self.node.createrawzerocoinpublicspend(
mints[1].get("serial hash"))
tx_B = CTransaction()
tx_B.deserialize(BytesIO(hex_str_to_bytes(public_spend_B)))
tx_B.rehash()
# Spending same coins to different recipients to get different txids
my_addy = "yAVWM5urwaTyhiuFQHP2aP47rdZsLUG5PH"
public_spend_A2 = self.node.createrawzerocoinpublicspend(
mints[0].get("serial hash"), my_addy)
tx_A2 = CTransaction()
tx_A2.deserialize(BytesIO(hex_str_to_bytes(public_spend_A2)))
tx_A2.rehash()
public_spend_B2 = self.node.createrawzerocoinpublicspend(
mints[1].get("serial hash"), my_addy)
tx_B2 = CTransaction()
tx_B2.deserialize(BytesIO(hex_str_to_bytes(public_spend_B2)))
tx_B2.rehash()
self.log.info("tx_A id: %s" % str(tx_A.hash))
self.log.info("tx_B id: %s" % str(tx_B.hash))
self.log.info("tx_A2 id: %s" % str(tx_A2.hash))
self.log.info("tx_B2 id: %s" % str(tx_B2.hash))
self.test_nodes[0].handle_connect()
# 6) create block_A --> main chain
self.log.info("")
self.log.info("*** block_A ***")
self.log.info("Creating block_A [%d] with public spend tx_A in it." %
(block_count + 1))
block_A = self.new_block(block_count, pastBlock, checkpoint, tx_A)
self.log.info("Hash of block_A: %s..." % block_A.hash[:5])
self.log.info("sending block_A...")
var = self.node.submitblock(bytes_to_hex_str(block_A.serialize()))
if var is not None:
self.log.info("result: %s" % str(var))
raise Exception("block_A not accepted")
time.sleep(2)
assert_equal(self.node.getblockcount(), block_count + 1)
assert_equal(self.node.getbestblockhash(), block_A.hash)
self.log.info(" >> block_A connected <<")
self.log.info(
"Current chain: ... --> block_0 [%d] --> block_A [%d]\n" %
(block_count, block_count + 1))
# 7) create block_B --> forked chain
self.log.info("*** block_B ***")
self.log.info("Creating block_B [%d] with public spend tx_B in it." %
(block_count + 1))
block_B = self.new_block(block_count, pastBlock, checkpoint, tx_B)
self.log.info("Hash of block_B: %s..." % block_B.hash[:5])
self.log.info("sending block_B...")
var = self.node.submitblock(bytes_to_hex_str(block_B.serialize()))
self.log.info("result of block_B submission: %s" % str(var))
time.sleep(2)
assert_equal(self.node.getblockcount(), block_count + 1)
assert_equal(self.node.getbestblockhash(), block_A.hash)
# block_B is not added. Chain remains the same
self.log.info(" >> block_B not connected <<")
self.log.info(
"Current chain: ... --> block_0 [%d] --> block_A [%d]\n" %
(block_count, block_count + 1))
# 8) Create new block block_C on the forked chain (block_B)
block_count += 1
self.log.info("*** block_C ***")
self.log.info(
"Creating block_C [%d] on top of block_B triggering the reorg" %
(block_count + 1))
block_C = self.new_block(block_count, block_B, checkpoint)
self.log.info("Hash of block_C: %s..." % block_C.hash[:5])
self.log.info("sending block_C...")
var = self.node.submitblock(bytes_to_hex_str(block_C.serialize()))
if var is not None:
self.log.info("result: %s" % str(var))
raise Exception("block_C not accepted")
time.sleep(2)
assert_equal(self.node.getblockcount(), block_count + 1)
assert_equal(self.node.getbestblockhash(), block_C.hash)
self.log.info(
" >> block_A disconnected / block_B and block_C connected <<")
self.log.info(
"Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d]\n"
% (block_count - 1, block_count, block_count + 1))
# 7) Now create block_D which tries to spend same coin of tx_B again on the (new) main chain
# (this block will be rejected)
block_count += 1
self.log.info("*** block_D ***")
self.log.info(
"Creating block_D [%d] trying to double spend the coin of tx_B" %
(block_count + 1))
block_D = self.new_block(block_count, block_C, checkpoint, tx_B2)
self.log.info("Hash of block_D: %s..." % block_D.hash[:5])
self.log.info("sending block_D...")
var = self.node.submitblock(bytes_to_hex_str(block_D.serialize()))
self.log.info("result of block_D submission: %s" % str(var))
time.sleep(2)
assert_equal(self.node.getblockcount(), block_count)
assert_equal(self.node.getbestblockhash(), block_C.hash)
# block_D is not added. Chain remains the same
self.log.info(" >> block_D rejected <<")
self.log.info(
"Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d]\n"
% (block_count - 2, block_count - 1, block_count))
# 8) Now create block_E which spends tx_A again on main chain
# (this block will be accepted and connected since tx_A was spent on block_A now disconnected)
self.log.info("*** block_E ***")
self.log.info("Creating block_E [%d] trying spend tx_A on main chain" %
(block_count + 1))
block_E = self.new_block(block_count, block_C, checkpoint, tx_A)
self.log.info("Hash of block_E: %s..." % block_E.hash[:5])
self.log.info("sending block_E...")
var = self.node.submitblock(bytes_to_hex_str(block_E.serialize()))
if var is not None:
self.log.info("result: %s" % str(var))
raise Exception("block_E not accepted")
time.sleep(2)
assert_equal(self.node.getblockcount(), block_count + 1)
assert_equal(self.node.getbestblockhash(), block_E.hash)
self.log.info(" >> block_E connected <<")
self.log.info(
"Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d] --> block_E [%d]\n"
% (block_count - 2, block_count - 1, block_count, block_count + 1))
# 9) Now create block_F which tries to double spend the coin in tx_A
# # (this block will be rejected)
block_count += 1
self.log.info("*** block_F ***")
self.log.info(
"Creating block_F [%d] trying to double spend the coin in tx_A" %
(block_count + 1))
block_F = self.new_block(block_count, block_E, checkpoint, tx_A2)
self.log.info("Hash of block_F: %s..." % block_F.hash[:5])
self.log.info("sending block_F...")
var = self.node.submitblock(bytes_to_hex_str(block_F.serialize()))
self.log.info("result of block_F submission: %s" % str(var))
time.sleep(2)
assert_equal(self.node.getblockcount(), block_count)
assert_equal(self.node.getbestblockhash(), block_E.hash)
self.log.info(" >> block_F rejected <<")
self.log.info(
"Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d] --> block_E [%d]\n"
% (block_count - 3, block_count - 2, block_count - 1, block_count))
self.log.info("All good.")
def blockhashstr(block_data):
b = CBlock()
b.deserialize(BytesIO(block_data), legacy=False)
b.calc_sha256()
return b.hash
