def from_bytes(b):
""" Deserializes a byte stream into a WalletTransaction.
Args:
b (bytes): byte stream starting with the version.
Returns:
tuple: First element of the tuple is the WalletTransaction,
second is the remainder of the byte stream.
"""
t, b1 = Transaction.from_bytes()
return WalletTransaction.from_transaction(t), b1
def from_bytes(b):
""" Deserializes a byte stream into a WalletTransaction.
Args:
b (bytes): byte stream starting with the version.
Returns:
tuple: First element of the tuple is the WalletTransaction,
second is the remainder of the byte stream.
"""
t, b1 = Transaction.from_bytes()
return WalletTransaction.from_transaction(t), b1
def mine_work(work_msg, enonce1, enonce2_size):
""" Mine the work using a CPU to find a valid solution.
Loop until the CPU finds a valid solution of the given work.
Todo:
Slow down the click echo when on a 21BC.
Args:
work_msg (WorkNotification): the work given by the pool API
enonce1 (bytes): extra nonce required to make the coinbase transaction
enonce2_size (int): size of the extra nonce 2 in bytes
"""
pool_target = utils.bits_to_target(work_msg.bits_pool)
for enonce2_num in range(0, 2**(enonce2_size * 8)):
enonce2 = enonce2_num.to_bytes(enonce2_size, byteorder="big")
cb_txn, _ = Transaction.from_bytes(work_msg.coinb1 + enonce1 +
enonce2 + work_msg.coinb2)
cb = CompactBlock(
work_msg.height,
work_msg.version,
Hash(work_msg.prev_block_hash),
work_msg.ntime,
work_msg.nbits, # lower difficulty work for testing
work_msg.merkle_edge,
cb_txn)
row_counter = 0
for nonce in range(0xffffffff):
if nonce % 6e3 == 0:
logger.info(click.style(u'█', fg='green'), nl=False)
row_counter += 1
if row_counter > 40:
row_counter = 0
logger.info("")
cb.block_header.nonce = nonce
h = cb.block_header.hash.to_int('little')
if h < pool_target:
share = Share(enonce2=enonce2,
nonce=nonce,
work_id=work_msg.work_id,
otime=int(time.time()))
# adds a new line at the end of progress bar
logger.info("")
return share
logger.info("Exhausted enonce1 space. Changing enonce2")
def mine_work(work_msg, enonce1, enonce2_size):
""" Mine the work using a CPU to find a valid solution.
Loop until the CPU finds a valid solution of the given work.
Todo:
Slow down the click echo when on a 21BC.
Args:
work_msg (WorkNotification): the work given by the pool API
enonce1 (bytes): extra nonce required to make the coinbase transaction
enonce2_size (int): size of the extra nonce 2 in bytes
"""
pool_target = utils.bits_to_target(work_msg.bits_pool)
for enonce2_num in range(0, 2 ** (enonce2_size * 8)):
enonce2 = enonce2_num.to_bytes(enonce2_size, byteorder="big")
cb_txn, _ = Transaction.from_bytes(
work_msg.coinb1 + enonce1 + enonce2 + work_msg.coinb2)
cb = CompactBlock(work_msg.height,
work_msg.version,
Hash(work_msg.prev_block_hash),
work_msg.ntime,
work_msg.nbits, # lower difficulty work for testing
work_msg.merkle_edge,
cb_txn)
row_counter = 0
for nonce in range(0xffffffff):
if nonce % 6e3 == 0:
logger.info(click.style(u'█', fg='green'), nl=False)
row_counter += 1
if row_counter > 40:
row_counter = 0
logger.info("")
cb.block_header.nonce = nonce
h = cb.block_header.hash.to_int('little')
if h < pool_target:
share = Share(
enonce2=enonce2,
nonce=nonce,
work_id=work_msg.work_id,
otime=int(time.time()))
# adds a new line at the end of progress bar
logger.info("")
return share
logger.info("Exhausted enonce1 space. Changing enonce2")
def from_bytes(b):
""" Creates a Block from a serialized byte stream.
Args:
b (bytes): The byte stream, starting with the block version.
Returns:
block, b (tuple): A tuple. The first item is the deserialized block
and the second is the remainder of the byte stream.
"""
bh, b = BlockHeader.from_bytes(b)
num_txns, b = unpack_compact_int(b)
txns = []
for i in range(num_txns):
t, b = Transaction.from_bytes(b)
txns.append(t)
return Block.from_blockheader(bh, txns), b
def from_bytes(b):
""" Creates a Block from a serialized byte stream.
Args:
b (bytes): The byte stream, starting with the block version.
Returns:
block, b (tuple): A tuple. The first item is the deserialized block
and the second is the remainder of the byte stream.
"""
bh, b = BlockHeader.from_bytes(b)
num_txns, b = unpack_compact_int(b)
txns = []
for i in range(num_txns):
t, b = Transaction.from_bytes(b)
txns.append(t)
return Block.from_blockheader(bh, txns), b
