def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
merkle_root=bitcoin_data.merkle_hash(mm_hashes),
size=size,
nonce=0,
))
mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
else:
mm_data = ''
mm_later = []
tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
previous_share = self.node.tracker.items[self.node.best_share_var.value] if self.node.best_share_var.value is not None else None
if previous_share is None:
share_type = p2pool_data.Share
else:
previous_share_type = type(previous_share)
if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH:
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(self.node.tracker,
self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH*9//10), self.node.net.CHAIN_LENGTH//10)
upgraded = counts.get(successor_type.VERSION, 0)/sum(counts.itervalues())
if upgraded > .65:
print 'Switchover imminent. Upgraded: %.3f%% Threshold: %.3f%%' % (upgraded*100, 95)
print
# Share -> NewShare only valid if 95% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues())*95//100:
share_type = successor_type
else:
share_type = previous_share_type
if desired_share_target is None:
desired_share_target = 2**256-1 # will be reduced to SANE_TARGET_RANGE later
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
desired_share_target = min(desired_share_target,
bitcoin_data.average_attempts_to_target(local_hash_rate * self.node.net.SHARE_PERIOD / 0.0167)) # limit to 1.67% of pool shares by modulating share difficulty
local_addr_rates = self.get_local_addr_rates()
lookbehind = 3600//self.node.net.SHARE_PERIOD
block_subsidy = self.node.bitcoind_work.value['subsidy']
if previous_share is not None and self.node.tracker.get_height(previous_share.hash) > lookbehind:
expected_payout_per_block = local_addr_rates.get(pubkey_hash, 0)/p2pool_data.get_pool_attempts_per_second(self.node.tracker, self.node.best_share_var.value, lookbehind) \
* block_subsidy*(1-self.donation_percentage/100) # XXX doesn't use global stale rate to compute pool hash
if expected_payout_per_block < self.node.net.PARENT.DUST_THRESHOLD:
desired_share_target = min(desired_share_target,
bitcoin_data.average_attempts_to_target((bitcoin_data.target_to_average_attempts(self.node.bitcoind_work.value['bits'].target)*self.node.net.SPREAD)*self.node.net.PARENT.DUST_THRESHOLD/block_subsidy)
)
if True:
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(script.create_push_script([
self.current_work.value['height'],
] + ([mm_data] if mm_data else []) + [
]) + self.current_work.value['coinbaseflags'])[:100],
nonce=random.randrange(2**32),
pubkey_hash=pubkey_hash,
subsidy=self.current_work.value['subsidy'],
donation=math.perfect_round(65535*self.donation_percentage/100),
stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
'orphan' if orphans > orphans_recorded_in_chain else
'doa' if doas > doas_recorded_in_chain else
None
)(*self.get_stale_counts()),
desired_version=(share_type.SUCCESSOR if share_type.SUCCESSOR is not None else share_type).VOTING_VERSION,
),
block_target=self.current_work.value['bits'].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes_and_fees=zip(tx_hashes, self.current_work.value['transaction_fees']),
net=self.node.net,
known_txs=tx_map,
base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(self.current_work.value['height']),
)
packed_gentx = bitcoin_data.tx_type.pack(gentx)
other_transactions = [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] == 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
if desired_pseudoshare_target is None:
target = 2**256-1
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
target = min(target,
bitcoin_data.average_attempts_to_target(local_hash_rate * 1)) # limit to 1 share response every second by modulating pseudoshare difficulty
else:
target = desired_pseudoshare_target
# target = max(target, share_info['bits'].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work['target'])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link([None] + other_transaction_hashes, 0)
print 'New work for worker! Difficulty: %.06f Share difficulty: %.08f Total block value: %.6f %s including %i transactions' % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(share_info['bits'].target),
self.current_work.value['subsidy']*1e-8, self.node.net.PARENT.SYMBOL,
len(self.current_work.value['transactions']),
)
ba = dict(
version=min(self.current_work.value['version'], 2),
previous_block=self.current_work.value['previous_block'],
merkle_link=merkle_link,
coinb1=packed_gentx[:-self.COINBASE_NONCE_LENGTH-4],
coinb2=packed_gentx[-4:],
timestamp=self.current_work.value['time'],
bits=self.current_work.value['bits'],
share_target=target,
)
received_header_hashes = set()
def got_response(header, user, coinbase_nonce):
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH
new_packed_gentx = packed_gentx[:-self.COINBASE_NONCE_LENGTH-4] + coinbase_nonce + packed_gentx[-4:] if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = bitcoin_data.tx_type.unpack(new_packed_gentx) if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else gentx
header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
helper.submit_block(dict(header=header, txs=[new_gentx] + other_transactions), False, self.node.factory, self.node.bitcoind, self.node.bitcoind_work, self.node.net)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
print
except:
log.err(None, 'Error while processing potential block:')
user, _, _, _ = self.get_user_details(user)
assert header['previous_block'] == ba['previous_block']
assert header['merkle_root'] == bitcoin_data.check_merkle_link(bitcoin_data.hash256(new_packed_gentx), merkle_link)
assert header['bits'] == ba['bits']
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
# neoscrypt uses little endian only
# pack.IntType(256, 'little').pack(aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (result,)
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
last_txout_nonce = pack.IntType(8*self.COINBASE_NONCE_LENGTH).unpack(coinbase_nonce)
share = get_share(header, last_txout_nonce)
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
user,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header['bits'].target or p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time, share.hash)
if p2pool.DEBUG:
print 'Hash: %X' % (pow_hash)
print 'Target: %X' % (target)
if pow_hash > target:
print 'Worker %s submitted share with hash > target:' % (user,)
elif header_hash in received_header_hashes:
print >>sys.stderr, 'Worker %s submitted share more than once!' % (user,)
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user, share_target=share_info['bits'].target))
self.local_addr_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), pubkey_hash=pubkey_hash))
return on_time
return ba, got_response
def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u"p2pool is downloading shares")
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))["hash"] for i in xrange(size)]
mm_data = "\xfa\xbemm" + bitcoin_data.aux_pow_coinbase_type.pack(
dict(merkle_root=bitcoin_data.merkle_hash(mm_hashes), size=size, nonce=0)
)
mm_later = [
(aux_work, mm_hashes.index(aux_work["hash"]), mm_hashes)
for chain_id, aux_work in self.merged_work.value.iteritems()
]
else:
mm_data = ""
mm_later = []
tx_hashes = [
bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value["transactions"]
]
tx_map = dict(zip(tx_hashes, self.current_work.value["transactions"]))
previous_share = (
self.node.tracker.items[self.node.best_share_var.value]
if self.node.best_share_var.value is not None
else None
)
if previous_share is None:
share_type = p2pool_data.Share
else:
previous_share_type = type(previous_share)
if (
previous_share_type.SUCCESSOR is None
or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH
):
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(
self.node.tracker,
self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH * 9 // 10),
self.node.net.CHAIN_LENGTH // 10,
)
upgraded = counts.get(successor_type.VERSION, 0) / sum(counts.itervalues())
if upgraded > 0.65:
print "Switchover imminent. Upgraded: %.3f%% Threshold: %.3f%%" % (upgraded * 100, 95)
print
# Share -> NewShare only valid if 95% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues()) * 95 // 100:
share_type = successor_type
else:
share_type = previous_share_type
if desired_share_target is None:
desired_share_target = 2 ** 256 - 1
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
desired_share_target = min(
desired_share_target,
bitcoin_data.average_attempts_to_target(local_hash_rate * self.node.net.SHARE_PERIOD / 0.0167),
) # limit to 1.67% of pool shares by modulating share difficulty
local_addr_rates = self.get_local_addr_rates()
lookbehind = 3600 // self.node.net.SHARE_PERIOD
block_subsidy = self.node.bitcoind_work.value["subsidy"]
if previous_share is not None and self.node.tracker.get_height(previous_share.hash) > lookbehind:
expected_payout_per_block = (
local_addr_rates.get(pubkey_hash, 0)
/ p2pool_data.get_pool_attempts_per_second(
self.node.tracker, self.node.best_share_var.value, lookbehind
)
* block_subsidy
* (1 - self.donation_percentage / 100)
) # XXX doesn't use global stale rate to compute pool hash
if expected_payout_per_block < self.node.net.PARENT.DUST_THRESHOLD:
desired_share_target = min(
desired_share_target,
bitcoin_data.average_attempts_to_target(
(
bitcoin_data.target_to_average_attempts(self.node.bitcoind_work.value["bits"].target)
* self.node.net.SPREAD
)
* self.node.net.PARENT.DUST_THRESHOLD
/ block_subsidy
),
)
if True:
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(
script.create_push_script(
[self.current_work.value["height"]] + ([mm_data] if mm_data else []) + []
)
+ self.current_work.value["coinbaseflags"]
)[:100],
nonce=random.randrange(2 ** 32),
pubkey_hash=pubkey_hash,
subsidy=self.current_work.value["subsidy"],
donation=math.perfect_round(65535 * self.donation_percentage / 100),
stale_info=(
lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain): "orphan"
if orphans > orphans_recorded_in_chain
else "doa"
if doas > doas_recorded_in_chain
else None
)(*self.get_stale_counts()),
desired_version=(
share_type.SUCCESSOR if share_type.SUCCESSOR is not None else share_type
).VOTING_VERSION,
),
block_target=self.current_work.value["bits"].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes_and_fees=zip(tx_hashes, self.current_work.value["transaction_fees"]),
net=self.node.net,
known_txs=tx_map,
base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(self.current_work.value["height"]),
)
packed_gentx = bitcoin_data.tx_type.pack(gentx)
other_transactions = [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
mm_later = [
(
dict(
aux_work, target=aux_work["target"] if aux_work["target"] != "p2pool" else share_info["bits"].target
),
index,
hashes,
)
for aux_work, index, hashes in mm_later
]
if desired_pseudoshare_target is None:
target = 2 ** 256 - 1
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
target = min(
target, bitcoin_data.average_attempts_to_target(local_hash_rate * 3)
) # limit to 1 share response every 3 seconds by modulating pseudoshare difficulty
else:
target = desired_pseudoshare_target
target = max(target, share_info["bits"].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work["target"])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link([None] + other_transaction_hashes, 0)
print "New work for worker! Difficulty: %.09f Share difficulty: %.09f Total block value: %.6f %s including %i transactions" % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(share_info["bits"].target),
self.current_work.value["subsidy"] * 1e-8,
self.node.net.PARENT.SYMBOL,
len(self.current_work.value["transactions"]),
)
ba = dict(
version=min(self.current_work.value["version"], 2),
previous_block=self.current_work.value["previous_block"],
merkle_link=merkle_link,
coinb1=packed_gentx[: -self.COINBASE_NONCE_LENGTH - 4],
coinb2=packed_gentx[-4:],
timestamp=self.current_work.value["time"],
bits=self.current_work.value["bits"],
share_target=target,
)
received_header_hashes = set()
def got_response(header, user, coinbase_nonce):
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH
new_packed_gentx = (
packed_gentx[: -self.COINBASE_NONCE_LENGTH - 4] + coinbase_nonce + packed_gentx[-4:]
if coinbase_nonce != "\0" * self.COINBASE_NONCE_LENGTH
else packed_gentx
)
new_gentx = (
bitcoin_data.tx_type.unpack(new_packed_gentx)
if coinbase_nonce != "\0" * self.COINBASE_NONCE_LENGTH
else gentx
)
header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header["bits"].target or p2pool.DEBUG:
helper.submit_block(
dict(header=header, txs=[new_gentx] + other_transactions),
False,
self.node.factory,
self.node.bitcoind,
self.node.bitcoind_work,
self.node.net,
)
if pow_hash <= header["bits"].target:
print
print "GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x" % (
self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX,
header_hash,
)
print
except:
log.err(None, "Error while processing potential block:")
user, _, _, _ = self.get_user_details(user)
assert header["previous_block"] == ba["previous_block"]
assert header["merkle_root"] == bitcoin_data.check_merkle_link(
bitcoin_data.hash256(new_packed_gentx), merkle_link
)
assert header["bits"] == ba["bits"]
# Check momentum using midhash (who knows why it is called that) and birthday values
midhash = hashlib.sha256(hashlib.sha256(bitcoin_data.block_header_type.pack(header)[:80]).digest()).digest()
# print 'MIDHASH: {0}'.format(midhash.encode('hex'))
# print 'A: {0}'.format(header['birthdayA'])
# print 'B: {0}'.format(header['birthdayB'])
momentumc = rewardcoin_momentum.checkMomentum(midhash, header["birthdayA"], header["birthdayB"])
# print momentumc
if momentumc == False:
print "Invalid Momentum from Client!"
return False
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work["target"] or p2pool.DEBUG:
df = deferral.retry("Error submitting merged block: (will retry)", 10, 10)(
aux_work["merged_proxy"].rpc_getauxblock
)(
pack.IntType(256, "big").pack(aux_work["hash"]).encode("hex"),
bitcoin_data.aux_pow_type.pack(
dict(
merkle_tx=dict(tx=new_gentx, block_hash=header_hash, merkle_link=merkle_link),
merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
parent_block_header=header,
)
).encode("hex"),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work["target"]):
print >> sys.stderr, "Merged block submittal result: %s Expected: %s" % (
result,
pow_hash <= aux_work["target"],
)
else:
print "Merged block submittal result: %s" % (result,)
@df.addErrback
def _(err):
log.err(err, "Error submitting merged block:")
except:
log.err(None, "Error while processing merged mining POW:")
if pow_hash <= share_info["bits"].target and header_hash not in received_header_hashes:
last_txout_nonce = pack.IntType(8 * self.COINBASE_NONCE_LENGTH).unpack(coinbase_nonce)
share = get_share(header, last_txout_nonce)
print "GOT SHARE! %s %s prev %s age %.2fs%s" % (
user,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
" DEAD ON ARRIVAL" if not on_time else "",
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header["bits"].target or p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, "Error forwarding block solution:")
self.share_received.happened(
bitcoin_data.target_to_average_attempts(share.target), not on_time, share.hash
)
if pow_hash > target:
print "Worker %s submitted share with hash > target:" % (user,)
print " Hash: %56x" % (pow_hash,)
print " Target: %56x" % (target,)
elif header_hash in received_header_hashes:
print >> sys.stderr, "Worker %s submitted share more than once!" % (user,)
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(
dict(
work=bitcoin_data.target_to_average_attempts(target),
dead=not on_time,
user=user,
share_target=share_info["bits"].target,
)
)
self.local_addr_rate_monitor.add_datum(
dict(work=bitcoin_data.target_to_average_attempts(target), pubkey_hash=pubkey_hash)
)
return on_time
return ba, got_response
def get_work(self, pubkey, desired_share_target, desired_pseudoshare_target):
if (self.node.p2p_node is None or len(self.node.p2p_node.peers) == 0) and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u'p2pool is not connected to any peers')
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
if time.time() > self.current_work.value['last_update'] + 60:
raise jsonrpc.Error_for_code(-12345)(u'lost contact with bitcoind')
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
merkle_root=bitcoin_data.merkle_hash(mm_hashes),
size=size,
nonce=0,
))
mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
else:
mm_data = ''
mm_later = []
tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
txn_timestamp = self.current_work.value['txn_timestamp']
#print
#print txn_timestamp
#print
if self.node.best_share_var.value is None:
share_type = p2pool_data.Share
else:
previous_share = self.node.tracker.items[self.node.best_share_var.value]
previous_share_type = type(previous_share)
if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH:
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(self.node.tracker,
self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH*9//10), self.node.net.CHAIN_LENGTH//10)
# Share -> NewShare only valid if 85% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues())*95//100:
share_type = successor_type
else:
share_type = previous_share_type
if True:
subsidy = self.node.net.PARENT.SUBSIDY_FUNC(self.current_work.value['bits'].target)
desired_timestamp = int(time.time() + 0.5)
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(script.create_push_script([
self.current_work.value['height'],
] + ([mm_data] if mm_data else []) + [
]) + self.current_work.value['coinbaseflags'])[:100],
nonce=random.randrange(2**32),
pubkey=pubkey,
subsidy=self.current_work.value['subsidy'],
donation=math.perfect_round(65535*self.donation_percentage/100),
stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
'orphan' if orphans > orphans_recorded_in_chain else
'doa' if doas > doas_recorded_in_chain else
None
)(*self.get_stale_counts()),
desired_version=14,
),
block_target=self.current_work.value['bits'].target,
desired_timestamp=desired_timestamp if txn_timestamp < desired_timestamp else txn_timestamp + 1,
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes_and_fees=zip(tx_hashes, self.current_work.value['transaction_fees']),
net=self.node.net,
known_txs=tx_map,
base_subsidy=subsidy
)
packed_gentx = bitcoin_data.tx_type.pack(gentx)
other_transactions = [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] != 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
if desired_pseudoshare_target is None:
target = 2**256-1
if len(self.recent_shares_ts_work) == 50:
hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:])//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
if hash_rate:
target = min(target, int(2**256/hash_rate))
else:
target = desired_pseudoshare_target
target = max(target, share_info['bits'].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work['target'])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link([None] + other_transaction_hashes, 0)
print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(share_info['bits'].target),
self.current_work.value['subsidy']*1e-6, self.node.net.PARENT.SYMBOL,
len(self.current_work.value['transactions']),
)
ba = dict(
version=min(self.current_work.value['version'], 3),
previous_block=self.current_work.value['previous_block'],
merkle_link=merkle_link,
coinb1=packed_gentx[:-4-4],
coinb2=packed_gentx[-4:],
timestamp=gentx['timestamp'],
bits=self.current_work.value['bits'],
share_target=target,
)
received_header_hashes = set()
def got_response(header, user, coinbase_nonce):
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH == 4
new_packed_gentx = packed_gentx[:-4-4] + coinbase_nonce + packed_gentx[-4:] if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = bitcoin_data.tx_type.unpack(new_packed_gentx) if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else gentx
header_hash = self.node.net.PARENT.BLOCKHASH_FUNC(bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
try:
if header['timestamp'] > new_gentx['timestamp'] + 3600:
print
print header['timestamp'], '>', new_gentx['timestamp'] + 3600
print 'Coinbase timestamp is too early!'
print
return
if header['timestamp'] < new_gentx['timestamp']:
print
print header['timestamp'], '<', new_gentx['timestamp']
print 'Block header timestamp is before coinbase timestamp!'
print
return
if pow_hash <= header['bits'].target or p2pool.DEBUG:
helper.submit_block(dict(header=header, txs=[new_gentx] + other_transactions, signature=''), False, self.node.factory, self.node.bitcoind, self.node.bitcoind_work, self.node.net)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
print
except:
log.err(None, 'Error while processing potential block:')
user, _, _, _ = self.get_user_details(user)
assert header['previous_block'] == ba['previous_block']
assert header['merkle_root'] == bitcoin_data.check_merkle_link(bitcoin_data.hash256(new_packed_gentx), merkle_link)
assert header['bits'] == ba['bits']
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (result,)
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
share = get_share(header, pack.IntType(32).unpack(coinbase_nonce))
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
user,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header['bits'].target or p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time)
if pow_hash > target:
print 'Worker %s submitted share with hash > target:' % (user,)
print ' Hash: %56x' % (pow_hash,)
print ' Target: %56x' % (target,)
elif header_hash in received_header_hashes:
print >>sys.stderr, 'Worker %s submitted share more than once!' % (user,)
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user))
return on_time
return ba, got_response
def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
if (self.node.p2p_node is None or len(self.node.p2p_node.peers) == 0) and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u"p2pool is not connected to any peers")
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u"p2pool is downloading shares")
if time.time() > self.current_work.value["last_update"] + 60:
raise jsonrpc.Error_for_code(-12345)(u"lost contact with bitcoind")
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))["hash"] for i in xrange(size)]
mm_data = "\xfa\xbemm" + bitcoin_data.aux_pow_coinbase_type.pack(
dict(merkle_root=bitcoin_data.merkle_hash(mm_hashes), size=size, nonce=0)
)
mm_later = [
(aux_work, mm_hashes.index(aux_work["hash"]), mm_hashes)
for chain_id, aux_work in self.merged_work.value.iteritems()
]
else:
mm_data = ""
mm_later = []
tx_hashes = [
bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value["transactions"]
]
tx_map = dict(zip(tx_hashes, self.current_work.value["transactions"]))
if self.node.best_share_var.value is None:
share_type = p2pool_data.Share
else:
previous_share = self.node.tracker.items[self.node.best_share_var.value]
previous_share_type = type(previous_share)
if (
previous_share_type.SUCCESSOR is None
or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH
):
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(
self.node.tracker,
self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH * 9 // 10),
self.node.net.CHAIN_LENGTH // 10,
)
# Share -> NewShare only valid if 85% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues()) * 95 // 100:
share_type = successor_type
else:
share_type = previous_share_type
if True:
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(
script.create_push_script(
[self.current_work.value["height"]] + ([mm_data] if mm_data else []) + []
)
+ self.current_work.value["coinbaseflags"]
)[:100],
nonce=random.randrange(2 ** 32),
pubkey_hash=pubkey_hash,
subsidy=self.current_work.value["subsidy"],
donation=math.perfect_round(65535 * self.donation_percentage / 100),
stale_info=(
lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain): "orphan"
if orphans > orphans_recorded_in_chain
else "doa"
if doas > doas_recorded_in_chain
else None
)(*self.get_stale_counts()),
desired_version=share_type.SUCCESSOR.VERSION
if share_type.SUCCESSOR is not None
else share_type.VERSION,
),
block_target=self.current_work.value["bits"].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes=tx_hashes,
net=self.node.net,
known_txs=tx_map,
)
transactions = [gentx] + [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
mm_later = [
(
dict(
aux_work, target=aux_work["target"] if aux_work["target"] != "p2pool" else share_info["bits"].target
),
index,
hashes,
)
for aux_work, index, hashes in mm_later
]
if desired_pseudoshare_target is None:
target = 2 ** 256 - 1
if len(self.recent_shares_ts_work) == 50:
hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:]) // (
self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0]
)
if hash_rate:
target = min(target, int(2 ** 256 / hash_rate))
else:
target = desired_pseudoshare_target
target = max(target, share_info["bits"].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work["target"])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link(
[bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in transactions], 0
)
print "New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions" % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(share_info["bits"].target),
self.current_work.value["subsidy"] * 1e-8,
self.node.net.PARENT.SYMBOL,
len(self.current_work.value["transactions"]),
)
ba = bitcoin_getwork.BlockAttempt(
version=min(self.current_work.value["version"], 2),
previous_block=self.current_work.value["previous_block"],
merkle_root=bitcoin_data.check_merkle_link(
bitcoin_data.hash256(bitcoin_data.tx_type.pack(transactions[0])), merkle_link
),
timestamp=self.current_work.value["time"],
bits=self.current_work.value["bits"],
share_target=target,
)
received_header_hashes = set()
def got_response(header, request):
header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header["bits"].target or p2pool.DEBUG:
helper.submit_block(
dict(header=header, txs=transactions),
False,
self.node.factory,
self.node.bitcoind,
self.node.bitcoind_work,
self.node.net,
)
if pow_hash <= header["bits"].target:
print
print "GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x" % (
self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX,
header_hash,
)
print
except:
log.err(None, "Error while processing potential block:")
user, _, _, _ = self.get_user_details(request)
assert header["previous_block"] == ba.previous_block
assert header["merkle_root"] == ba.merkle_root
assert header["bits"] == ba.bits
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work["target"] or p2pool.DEBUG:
df = deferral.retry("Error submitting merged block: (will retry)", 10, 10)(
aux_work["merged_proxy"].rpc_getauxblock
)(
pack.IntType(256, "big").pack(aux_work["hash"]).encode("hex"),
bitcoin_data.aux_pow_type.pack(
dict(
merkle_tx=dict(tx=transactions[0], block_hash=header_hash, merkle_link=merkle_link),
merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
parent_block_header=header,
)
).encode("hex"),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work["target"]):
print >> sys.stderr, "Merged block submittal result: %s Expected: %s" % (
result,
pow_hash <= aux_work["target"],
)
else:
print "Merged block submittal result: %s" % (result,)
@df.addErrback
def _(err):
log.err(err, "Error submitting merged block:")
except:
log.err(None, "Error while processing merged mining POW:")
if pow_hash <= share_info["bits"].target and header_hash not in received_header_hashes:
share = get_share(header, transactions)
print "GOT SHARE! %s %s prev %s age %.2fs%s" % (
request.getUser(),
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
" DEAD ON ARRIVAL" if not on_time else "",
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
if not p2pool.DEBUG:
self.node.tracker.verified.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header["bits"].target or p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, "Error forwarding block solution:")
self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time)
if pow_hash > target:
print "Worker %s submitted share with hash > target:" % (request.getUser(),)
print " Hash: %56x" % (pow_hash,)
print " Target: %56x" % (target,)
elif header_hash in received_header_hashes:
print >> sys.stderr, "Worker %s @ %s submitted share more than once!" % (
request.getUser(),
request.getClientIP(),
)
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(
dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user)
)
return on_time
return ba, got_response
def get_work(self, pubkey_hash, desired_share_target,
desired_pseudoshare_target):
if (self.node.p2p_node is None or len(self.node.p2p_node.peers)
== 0) and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(
u'p2pool is not connected to any peers')
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(
u'p2pool is downloading shares')
if time.time() > self.current_work.value['last_update'] + 60:
raise jsonrpc.Error_for_code(-12345)(u'lost contact with bitcoind')
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [
self.merged_work.value.get(tree.get(i), dict(hash=0))['hash']
for i in xrange(size)
]
mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(
dict(
merkle_root=bitcoin_data.merkle_hash(mm_hashes),
size=size,
nonce=0,
))
mm_later = [
(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes)
for chain_id, aux_work in self.merged_work.value.iteritems()
]
else:
mm_data = ''
mm_later = []
tx_hashes = [
bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx))
for tx in self.current_work.value['transactions']
]
tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
if self.node.best_share_var.value is None:
share_type = p2pool_data.Share
else:
previous_share = self.node.tracker.items[
self.node.best_share_var.value]
previous_share_type = type(previous_share)
if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(
previous_share.hash) < self.node.net.CHAIN_LENGTH:
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(
self.node.tracker,
self.node.tracker.get_nth_parent_hash(
previous_share.hash,
self.node.net.CHAIN_LENGTH * 9 // 10),
self.node.net.CHAIN_LENGTH // 10)
# Share -> NewShare only valid if 85% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION,
0) > sum(counts.itervalues()) * 95 // 100:
share_type = successor_type
else:
share_type = previous_share_type
if True:
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(script.create_push_script([
self.current_work.value['height'],
] + ([mm_data] if mm_data else []) + []) +
self.current_work.value['coinbaseflags'])[:100],
nonce=random.randrange(2**32),
pubkey_hash=pubkey_hash,
subsidy=self.current_work.value['subsidy'],
donation=math.perfect_round(
65535 * self.donation_percentage / 100),
stale_info=(
lambda (orphans, doas), total,
(orphans_recorded_in_chain, doas_recorded_in_chain
): 'orphan'
if orphans > orphans_recorded_in_chain else 'doa'
if doas > doas_recorded_in_chain else None)(
*self.get_stale_counts()),
desired_version=11,
),
block_target=self.current_work.value['bits'].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes_and_fees=zip(
tx_hashes, self.current_work.value['transaction_fees']),
net=self.node.net,
known_txs=tx_map,
base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(
self.current_work.value['height']),
)
packed_gentx = bitcoin_data.tx_type.pack(gentx)
other_transactions = [
tx_map[tx_hash] for tx_hash in other_transaction_hashes
]
mm_later = [
(dict(aux_work,
target=aux_work['target'] if aux_work['target'] != 'p2pool'
else share_info['bits'].target), index, hashes)
for aux_work, index, hashes in mm_later
]
if desired_pseudoshare_target is None:
target = 2**256 - 1
if len(self.recent_shares_ts_work) == 50:
hash_rate = sum(
work for ts, work in self.recent_shares_ts_work[1:]) // (
self.recent_shares_ts_work[-1][0] -
self.recent_shares_ts_work[0][0])
if hash_rate:
target = min(target, int(2**256 / hash_rate))
else:
target = desired_pseudoshare_target
target = max(target, share_info['bits'].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work['target'])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link(
[None] + other_transaction_hashes, 0)
print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(share_info['bits'].target),
self.current_work.value['subsidy'] * 1e-8,
self.node.net.PARENT.SYMBOL,
len(self.current_work.value['transactions']),
)
ba = dict(
version=min(self.current_work.value['version'], 2),
previous_block=self.current_work.value['previous_block'],
merkle_link=merkle_link,
coinb1=packed_gentx[:-4 - 4],
coinb2=packed_gentx[-4:],
timestamp=self.current_work.value['time'],
bits=self.current_work.value['bits'],
share_target=target,
)
received_header_hashes = set()
def got_response(header, user, coinbase_nonce):
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH == 4
new_packed_gentx = packed_gentx[:-4 - 4] + coinbase_nonce + packed_gentx[
-4:] if coinbase_nonce != '\0' * self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = bitcoin_data.tx_type.unpack(
new_packed_gentx
) if coinbase_nonce != '\0' * self.COINBASE_NONCE_LENGTH else gentx
header_hash = bitcoin_data.hash256(
bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(
bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
helper.submit_block(
dict(header=header,
txs=[new_gentx] + other_transactions), False,
self.node.factory, self.node.bitcoind,
self.node.bitcoind_work, self.node.net)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (
self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX,
header_hash)
print
except:
log.err(None, 'Error while processing potential block:')
user, _, _, _ = self.get_user_details(user)
assert header['previous_block'] == ba['previous_block']
assert header['merkle_root'] == bitcoin_data.check_merkle_link(
bitcoin_data.hash256(new_packed_gentx), merkle_link)
assert header['bits'] == ba['bits']
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry(
'Error submitting merged block: (will retry)', 10,
10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(
aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(
dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.
calculate_merkle_link(hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >> sys.stderr, 'Merged block submittal result: %s Expected: %s' % (
result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (
result, )
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info[
'bits'].target and header_hash not in received_header_hashes:
share = get_share(header,
pack.IntType(32).unpack(coinbase_nonce))
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
user,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header['bits'].target or
p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(
bitcoin_data.target_to_average_attempts(share.target),
not on_time)
if pow_hash > target:
print 'Worker %s submitted share with hash > target:' % (
user, )
print ' Hash: %56x' % (pow_hash, )
print ' Target: %56x' % (target, )
elif header_hash in received_header_hashes:
print >> sys.stderr, 'Worker %s submitted share more than once!' % (
user, )
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(
bitcoin_data.target_to_average_attempts(target),
not on_time, user)
self.recent_shares_ts_work.append(
(time.time(),
bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(
dict(work=bitcoin_data.target_to_average_attempts(target),
dead=not on_time,
user=user))
return on_time
return ba, got_response
def get_work(self, pubkey_hash, desired_share_target,
desired_pseudoshare_target):
global print_throttle
if (self.node.p2p_node is None or len(self.node.p2p_node.peers)
== 0) and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(
u'p2pool is not connected to any peers')
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(
u'p2pool is downloading shares')
if set(r[1:] if r.startswith('!') else r
for r in self.node.bitcoind_work.value['rules']) - set(
getattr(self.node.net, 'SOFTFORKS_REQUIRED', [])):
raise jsonrpc.Error_for_code(-12345)(u'unknown rule activated')
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [
self.merged_work.value.get(tree.get(i), dict(hash=0))['hash']
for i in xrange(size)
]
mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(
dict(
merkle_root=bitcoin_data.merkle_hash(mm_hashes),
size=size,
nonce=0,
))
mm_later = [
(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes)
for chain_id, aux_work in self.merged_work.value.iteritems()
]
else:
mm_data = ''
mm_later = []
tx_hashes = [
bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx))
for tx in self.current_work.value['transactions']
]
tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
previous_share = self.node.tracker.items[
self.node.best_share_var.
value] if self.node.best_share_var.value is not None else None
if previous_share is None:
share_type = p2pool_data.Share
else:
previous_share_type = type(previous_share)
if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(
previous_share.hash) < self.node.net.CHAIN_LENGTH:
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(
self.node.tracker,
self.node.tracker.get_nth_parent_hash(
previous_share.hash,
self.node.net.CHAIN_LENGTH * 9 // 10),
self.node.net.CHAIN_LENGTH // 10)
upgraded = counts.get(successor_type.VERSION, 0) / sum(
counts.itervalues())
if upgraded > .65:
print 'Switchover imminent. Upgraded: %.3f%% Threshold: %.3f%%' % (
upgraded * 100, 95)
# Share -> NewShare only valid if 95% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION,
0) > sum(counts.itervalues()) * 95 // 100:
share_type = successor_type
else:
share_type = previous_share_type
if desired_share_target is None:
desired_share_target = 2**256 - 1
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
desired_share_target = min(
desired_share_target,
bitcoin_data.average_attempts_to_target(
local_hash_rate * self.node.net.SHARE_PERIOD / 0.0167)
) # limit to 1.67% of pool shares by modulating share difficulty
local_addr_rates = self.get_local_addr_rates()
lookbehind = 3600 // self.node.net.SHARE_PERIOD
block_subsidy = self.node.bitcoind_work.value['subsidy']
if previous_share is not None and self.node.tracker.get_height(
previous_share.hash) > lookbehind:
expected_payout_per_block = local_addr_rates.get(pubkey_hash, 0)/p2pool_data.get_pool_attempts_per_second(self.node.tracker, self.node.best_share_var.value, lookbehind) \
* block_subsidy*(1-self.donation_percentage/100) # XXX doesn't use global stale rate to compute pool hash
if expected_payout_per_block < self.node.net.PARENT.DUST_THRESHOLD:
desired_share_target = min(
desired_share_target,
bitcoin_data.average_attempts_to_target(
(bitcoin_data.target_to_average_attempts(
self.node.bitcoind_work.value['bits'].target) *
self.node.net.SPREAD) *
self.node.net.PARENT.DUST_THRESHOLD /
block_subsidy))
if True:
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(script.create_push_script([
self.current_work.value['height'],
] + ([mm_data] if mm_data else []) + self.args.coinb_texts)
+
self.current_work.value['coinbaseflags'])[:100],
nonce=random.randrange(2**32),
pubkey_hash=pubkey_hash,
subsidy=self.current_work.value['subsidy'],
donation=math.perfect_round(
65535 * self.donation_percentage / 100),
stale_info=(
lambda (orphans, doas), total,
(orphans_recorded_in_chain, doas_recorded_in_chain
): 'orphan'
if orphans > orphans_recorded_in_chain else 'doa'
if doas > doas_recorded_in_chain else None)(
*self.get_stale_counts()),
desired_version=(share_type.SUCCESSOR
if share_type.SUCCESSOR is not None else
share_type).VOTING_VERSION,
),
block_target=self.current_work.value['bits'].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes_and_fees=zip(
tx_hashes, self.current_work.value['transaction_fees']),
net=self.node.net,
known_txs=tx_map,
base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(
self.current_work.value['height']),
)
packed_gentx = bitcoin_data.tx_id_type.pack(
gentx) # stratum miners work with stripped transactions
other_transactions = [
tx_map[tx_hash] for tx_hash in other_transaction_hashes
]
mm_later = [
(dict(aux_work,
target=aux_work['target'] if aux_work['target'] != 'p2pool'
else share_info['bits'].target), index, hashes)
for aux_work, index, hashes in mm_later
]
if desired_pseudoshare_target is None:
#target = 2**256-1
#DUMB_SCR
target = bitcoin_data.difficulty_to_target(
float(1.0 / self.node.net.PARENT.DUMB_SCRYPT_DIFF))
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
#target = min(target, bitcoin_data.average_attempts_to_target(local_hash_rate * 1)) # limit to 1 share response every second by modulating pseudoshare difficulty
target = bitcoin_data.average_attempts_to_target(
local_hash_rate * 1
) # limit to 1 share response every second by modulating pseudoshare difficulty
else:
target = desired_pseudoshare_target
target = max(target, share_info['bits'].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work['target'])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link(
[None] + other_transaction_hashes, 0) if share_info.get(
'segwit_data', None
) is None else share_info['segwit_data']['txid_merkle_link']
if print_throttle is 0.0:
print_throttle = time.time()
else:
current_time = time.time()
if (current_time - print_throttle) > 5.0:
print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(
share_info['bits'].target),
self.current_work.value['subsidy'] * 1e-8,
self.node.net.PARENT.SYMBOL,
len(self.current_work.value['transactions']),
)
print_throttle = time.time()
#need this for stats
self.last_work_shares.value[bitcoin_data.pubkey_hash_to_address(
pubkey_hash, self.node.net.PARENT)] = share_info['bits']
ba = dict(
version=max(self.current_work.value['version'], 0x20000007),
previous_block=self.current_work.value['previous_block'],
merkle_link=merkle_link,
coinb1=packed_gentx[:-self.COINBASE_NONCE_LENGTH - 4],
coinb2=packed_gentx[-4:],
timestamp=self.current_work.value['time'],
bits=self.current_work.value['bits'],
share_target=target,
)
received_header_hashes = set()
def got_response(header, user, coinbase_nonce):
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH
new_packed_gentx = packed_gentx[:-self.COINBASE_NONCE_LENGTH - 4] + coinbase_nonce + packed_gentx[
-4:] if coinbase_nonce != '\0' * self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = bitcoin_data.tx_type.unpack(
new_packed_gentx
) if coinbase_nonce != '\0' * self.COINBASE_NONCE_LENGTH else gentx
if bitcoin_data.is_segwit_tx(
gentx
): # reintroduce witness data to the gentx produced by stratum miners
new_gentx['marker'] = 0
new_gentx['flag'] = gentx['flag']
new_gentx['witness'] = gentx['witness']
header_hash = bitcoin_data.hash256(
bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(
bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
helper.submit_block(
dict(header=header,
txs=[new_gentx] + other_transactions), False,
self.node.factory, self.node.bitcoind,
self.node.bitcoind_work, self.node.net)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (
self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX,
header_hash)
print
except:
log.err(None, 'Error while processing potential block:')
user, _, _, _ = self.get_user_details(user)
assert header['previous_block'] == ba['previous_block']
assert header['merkle_root'] == bitcoin_data.check_merkle_link(
bitcoin_data.hash256(new_packed_gentx), merkle_link)
assert header['bits'] == ba['bits']
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry(
'Error submitting merged block: (will retry)', 10,
10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(
aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(
dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.
calculate_merkle_link(hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >> sys.stderr, 'Merged block submittal result: %s Expected: %s' % (
result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (
result, )
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info[
'bits'].target and header_hash not in received_header_hashes:
last_txout_nonce = pack.IntType(
8 * self.COINBASE_NONCE_LENGTH).unpack(coinbase_nonce)
share = get_share(header, last_txout_nonce)
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
user,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.node.tracker.add(share)
self.node.set_best_share()
try:
if (pow_hash <= header['bits'].target or
p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(
bitcoin_data.target_to_average_attempts(share.target),
not on_time, share.hash)
if pow_hash > target:
print 'Worker %s submitted share with hash > target:' % (
user, )
print ' Hash: %56x' % (pow_hash, )
print ' Target: %56x' % (target, )
elif header_hash in received_header_hashes:
print >> sys.stderr, 'Worker %s submitted share more than once!' % (
user, )
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(
bitcoin_data.target_to_average_attempts(target),
not on_time, user)
self.recent_shares_ts_work.append(
(time.time(),
bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(
dict(work=bitcoin_data.target_to_average_attempts(target),
dead=not on_time,
user=user,
share_target=share_info['bits'].target))
self.local_addr_rate_monitor.add_datum(
dict(work=bitcoin_data.target_to_average_attempts(target),
pubkey_hash=pubkey_hash))
return on_time
return ba, got_response
def get_work(self, user, address, desired_share_target,
desired_pseudoshare_target, worker_ip=None):
global print_throttle
t0 = time.time()
if (self.node.p2p_node is None or len(self.node.p2p_node.peers) == 0) and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(
u'p2pool is not connected to any peers')
if self.node.best_share_var.value is None and self.node.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(
u'p2pool is downloading shares')
unknown_rules = set(r[1:] if r.startswith('!') else r for r in self.node.bitcoind_work.value['rules']
if r) - set(getattr(self.node.net, 'SOFTFORKS_REQUIRED', []))
if unknown_rules:
print "Unknown softforks found: ", unknown_rules
print "Required softforks: ", self.node.bitcoind_work.value['rules'], "\tKnown: ", getattr(
self.node.net, 'SOFTFORKS_REQUIRED', [])
raise jsonrpc.Error_for_code(-12345)(u'unknown rule activated')
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))[
'hash'] for i in xrange(size)]
mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
merkle_root=bitcoin_data.merkle_hash(mm_hashes),
size=size,
nonce=0,
))
mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes)
for chain_id, aux_work in self.merged_work.value.iteritems()]
else:
mm_data = ''
mm_later = []
tx_hashes = self.current_work.value['transaction_hashes']
tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
# let node.py know not to evict these transactions
self.node.mining2_txs_var.set(tx_map)
previous_share = self.node.tracker.items[
self.node.best_share_var.value] if self.node.best_share_var.value is not None else None
if previous_share is None:
share_type = p2pool_data.Share
else:
previous_share_type = type(previous_share)
if previous_share_type.SUCCESSOR is None or self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH:
share_type = previous_share_type
else:
successor_type = previous_share_type.SUCCESSOR
counts = p2pool_data.get_desired_version_counts(self.node.tracker,
self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH*9//10), self.node.net.CHAIN_LENGTH//10)
upgraded = counts.get(
successor_type.VERSION, 0)/sum(counts.itervalues())
if upgraded > .65:
print 'Switchover imminent. Upgraded: %.3f%% Threshold: %.3f%%' % (
upgraded*100, 95)
# Share -> NewShare only valid if 95% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
if counts.get(successor_type.VERSION, 0) > sum(counts.itervalues())*95//100:
share_type = successor_type
else:
share_type = previous_share_type
if desired_share_target is None:
desired_share_target = 2**256-1
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
desired_share_target = min(desired_share_target,
bitcoin_data.average_attempts_to_target(local_hash_rate * self.node.net.SHARE_PERIOD / 0.0167)) # limit to 1.67% of pool shares by modulating share difficulty
if self.node.punish:
print "trying to punish a share by mining a low-diff share"
desired_share_target = bitcoin_data.difficulty_to_target(1.)
local_addr_rates = self.get_local_addr_rates()
lookbehind = 3600//self.node.net.SHARE_PERIOD
block_subsidy = self.node.bitcoind_work.value['subsidy']
if previous_share is not None and self.node.tracker.get_height(previous_share.hash) > lookbehind:
expected_payout_per_block = local_addr_rates.get(address, 0)/p2pool_data.get_pool_attempts_per_second(self.node.tracker, self.node.best_share_var.value, lookbehind) \
* block_subsidy*(1-self.donation_percentage/100) # XXX doesn't use global stale rate to compute pool hash
if expected_payout_per_block < self.node.net.PARENT.DUST_THRESHOLD:
desired_share_target = min(desired_share_target,
bitcoin_data.average_attempts_to_target((bitcoin_data.target_to_average_attempts(
self.node.bitcoind_work.value['bits'].target)*self.node.net.SPREAD)*self.node.net.PARENT.DUST_THRESHOLD/block_subsidy)
)
if True:
share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
tracker=self.node.tracker,
share_data=dict(
previous_share_hash=self.node.best_share_var.value,
coinbase=(script.create_push_script([
self.current_work.value['height'],
] + ([mm_data] if mm_data else []) + self.args.coinb_texts
) + self.current_work.value['coinbaseflags'])[:100],
nonce=random.randrange(2**32),
address=address,
subsidy=self.current_work.value['subsidy'],
donation=math.perfect_round(
65535*self.donation_percentage/100),
stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
'orphan' if orphans > orphans_recorded_in_chain else
'doa' if doas > doas_recorded_in_chain else
None
)(*self.get_stale_counts()),
desired_version=(
share_type.SUCCESSOR if share_type.SUCCESSOR is not None else share_type).VOTING_VERSION,
),
block_target=self.current_work.value['bits'].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
desired_other_transaction_hashes_and_fees=zip(
tx_hashes, self.current_work.value['transaction_fees']),
net=self.node.net,
known_txs=tx_map,
base_subsidy=self.node.net.PARENT.SUBSIDY_FUNC(
self.current_work.value['height']),
)
# stratum miners work with stripped transactions
packed_gentx = bitcoin_data.tx_id_type.pack(gentx)
other_transactions = [tx_map[tx_hash]
for tx_hash in other_transaction_hashes]
del tx_hashes
if self.node.cur_share_ver >= 34:
tx_map = {} # we can free up this memory now
mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] !=
'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
if desired_pseudoshare_target is None:
target = 2**256-1
local_hash_rate = self._estimate_local_hash_rate()
if local_hash_rate is not None:
target = min(target,
bitcoin_data.average_attempts_to_target(local_hash_rate / 10)) # target no more than 10 share responses every second node-wide by modulating min pseudoshare difficulty
else:
# If we don't yet have an estimated node hashrate, then we still need to not undershoot the difficulty.
# Otherwise, we might get 1 PH/s of hashrate on difficulty settings appropriate for 1 GH/s.
# 1/3000th the difficulty of a full share should be a reasonable upper bound. That way, if
# one node has the whole p2pool hashrate, it will still only need to process one pseudoshare
# every ~0.01 seconds!!!
block_subsidy = self.node.bitcoind_work.value['subsidy']
target = min(target, 3000 * bitcoin_data.average_attempts_to_target((bitcoin_data.target_to_average_attempts(
self.node.bitcoind_work.value['bits'].target)*self.node.net.SPREAD)*self.node.net.PARENT.DUST_THRESHOLD/block_subsidy))
else:
target = desired_pseudoshare_target
target = max(target, share_info['bits'].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work['target'])
target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link([None] + other_transaction_hashes, 0) if share_info.get(
'segwit_data', None) is None else share_info['segwit_data']['txid_merkle_link']
del other_transaction_hashes
if print_throttle is 0.0:
print_throttle = time.time()
else:
current_time = time.time()
if (current_time - print_throttle) > 5.0:
print 'New work! Share diff: %.02f Block value: %.2f %s (%i tx, %.0f kB)' % (
bitcoin_data.target_to_difficulty(
share_info['bits'].target),
self.current_work.value['subsidy'] *
1e-8, self.node.net.PARENT.SYMBOL,
len(self.current_work.value['transactions']),
sum((bitcoin_data.get_size(tx)
for tx in self.current_work.value['transactions']))/1000.,
)
print_throttle = time.time()
# need this for stats
self.last_work_shares.value[address] = share_info['bits']
ba = dict(
version=max(self.current_work.value['version'], 0x20000000),
previous_block=self.current_work.value['previous_block'],
merkle_link=merkle_link,
coinb1=packed_gentx[:-self.COINBASE_NONCE_LENGTH-4],
coinb2=packed_gentx[-4:],
timestamp=self.current_work.value['time'],
bits=self.current_work.value['bits'],
min_share_target=share_info['bits'].target,
share_target=target,
)
received_header_hashes = set()
def got_response(header, username, coinbase_nonce, pseudoshare_target):
t0 = time.time()
assert len(coinbase_nonce) == self.COINBASE_NONCE_LENGTH
new_packed_gentx = packed_gentx[:-self.COINBASE_NONCE_LENGTH-4] + coinbase_nonce + \
packed_gentx[-4:] if coinbase_nonce != '\0' * \
self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = bitcoin_data.tx_type.unpack(
new_packed_gentx) if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else gentx
# reintroduce witness data to the gentx produced by stratum miners
if bitcoin_data.is_segwit_tx(gentx):
new_gentx['marker'] = 0
new_gentx['flag'] = gentx['flag']
new_gentx['witness'] = gentx['witness']
header_hash = bitcoin_data.hash256(
bitcoin_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(
bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (
self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
print
helper.submit_block(
dict(header=header, txs=[new_gentx] + other_transactions), False, self.node)
except:
log.err(None, 'Error while processing potential block:')
username, _, _, _ = self.get_user_details(username)
assert header['previous_block'] == ba['previous_block']
assert header['merkle_root'] == bitcoin_data.check_merkle_link(
bitcoin_data.hash256(new_packed_gentx), merkle_link)
assert header['bits'] == ba['bits']
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(
aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.calculate_merkle_link(
hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (
result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (
result,)
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
last_txout_nonce = pack.IntType(
8*self.COINBASE_NONCE_LENGTH).unpack(coinbase_nonce)
share = get_share(header, last_txout_nonce)
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
username,
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
if self.node.cur_share_ver < 34:
# node.py will sometimes forget transactions if bitcoind's work has changed since this stratum
# job was assigned. Fortunately, the tx_map is still in our scope from this job, so we can use that
# to refill it if needed.
known_txs = self.node.known_txs_var.value
missing = {hsh: val for (
hsh, val) in tx_map.iteritems() if not hsh in known_txs}
if missing:
print "Warning: %i transactions were erroneously evicted from known_txs_var. Refilling now." % len(
missing)
self.node.known_txs_var.add(missing)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
sibling_count = len(self.node.tracker.reverse.get(
share.previous_hash, set()))
if on_time or sibling_count < 4:
self.node.tracker.add(share)
else:
print "Already have %i DOA shares with this parent. Not adding more." % sibling_count
if on_time:
self.node.set_best_share()
else:
print "Not considering work switching to DOA share"
try:
if (pow_hash <= header['bits'].target or p2pool.DEBUG) and self.node.p2p_node is not None:
self.node.p2p_node.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(bitcoin_data.target_to_average_attempts(
share.target), not on_time, share.hash)
if pow_hash > pseudoshare_target:
print 'Worker %s submitted share with hash > target:' % (
username,)
print ' Hash: %064x' % (pow_hash,)
print ' Target: %064x' % (pseudoshare_target,)
elif header_hash in received_header_hashes:
print >>sys.stderr, 'Worker %s submitted share more than once!' % (
username,)
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(
pseudoshare_target), not on_time, username)
self.recent_shares_ts_work.append(
(time.time(), bitcoin_data.target_to_average_attempts(pseudoshare_target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(
pseudoshare_target), dead=not on_time, user=username, share_target=share_info['bits'].target))
self.local_addr_rate_monitor.add_datum(dict(
work=bitcoin_data.target_to_average_attempts(pseudoshare_target), address=address))
t1 = time.time()
if p2pool.BENCH and (t1-t0) > .01:
print "%8.3f ms for work.py:got_response(%s)" % (
(t1-t0)*1000., username)
return on_time
t1 = time.time()
if p2pool.BENCH:
print "%8.3f ms for work.py:get_work(%s, %s)" % (
(t1-t0)*1000., user, address)
return ba, got_response
def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
if len(self.p2p_node.peers) == 0 and self.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u'p2pool is not connected to any peers')
if self.best_share_var.value is None and self.net.PERSIST:
raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
if time.time() > self.current_work.value['last_update'] + 60:
raise jsonrpc.Error_for_code(-12345)(u'lost contact with bitcoind')
if self.merged_work.value:
tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
merkle_root=bitcoin_data.merkle_hash(mm_hashes),
size=size,
nonce=0,
))
mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
else:
mm_data = ''
mm_later = []
tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
if True:
share_info, gentx, other_transaction_hashes, get_share = p2pool_data.Share.generate_transaction(
tracker=self.tracker,
share_data=dict(
previous_share_hash=self.best_share_var.value,
coinbase=(script.create_push_script([
self.current_work.value['height'],
] + ([mm_data] if mm_data else []) + [
]) + self.current_work.value['coinbaseflags'])[:100],
nonce=random.randrange(2**32),
pubkey_hash=pubkey_hash,
subsidy=self.current_work.value['subsidy'],
donation=math.perfect_round(65535*self.donation_percentage/100),
stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
'orphan' if orphans > orphans_recorded_in_chain else
'doa' if doas > doas_recorded_in_chain else
None
)(*self.get_stale_counts()),
desired_version=5,
),
block_target=self.current_work.value['bits'].target,
desired_timestamp=int(time.time() + 0.5),
desired_target=desired_share_target,
ref_merkle_link=dict(branch=[], index=0),
other_transaction_hashes=tx_hashes,
net=self.net,
)
transactions = [gentx] + [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] != 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
if desired_pseudoshare_target is None:
target = 2**256-1
if len(self.recent_shares_ts_work) == 50:
hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:])//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
if hash_rate:
target = min(target, int(2**256/hash_rate))
else:
target = desired_pseudoshare_target
target = max(target, share_info['bits'].target)
for aux_work, index, hashes in mm_later:
target = max(target, aux_work['target'])
target = math.clip(target, self.net.PARENT.SANE_TARGET_RANGE)
getwork_time = time.time()
lp_count = self.new_work_event.times
merkle_link = bitcoin_data.calculate_merkle_link([bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in transactions], 0)
print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
bitcoin_data.target_to_difficulty(target),
bitcoin_data.target_to_difficulty(share_info['bits'].target),
self.current_work.value['subsidy']*1e-8, self.net.PARENT.SYMBOL,
len(self.current_work.value['transactions']),
)
ba = bitcoin_getwork.BlockAttempt(
version=min(self.current_work.value['version'], 2),
previous_block=self.current_work.value['previous_block'],
merkle_root=bitcoin_data.check_merkle_link(bitcoin_data.hash256(bitcoin_data.tx_type.pack(transactions[0])), merkle_link),
timestamp=self.current_work.value['time'],
bits=self.current_work.value['bits'],
share_target=target,
)
received_header_hashes = set()
def got_response(header, request):
header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
pow_hash = self.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
self.submit_block(dict(header=header, txs=transactions), ignore_failure=False)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
print
except:
log.err(None, 'Error while processing potential block:')
user, _, _, _ = self.get_user_details(request)
assert header['previous_block'] == ba.previous_block
assert header['merkle_root'] == ba.merkle_root
assert header['bits'] == ba.bits
on_time = self.new_work_event.times == lp_count
for aux_work, index, hashes in mm_later:
try:
if pow_hash <= aux_work['target'] or p2pool.DEBUG:
df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
bitcoin_data.aux_pow_type.pack(dict(
merkle_tx=dict(
tx=transactions[0],
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
parent_block_header=header,
)).encode('hex'),
)
@df.addCallback
def _(result, aux_work=aux_work):
if result != (pow_hash <= aux_work['target']):
print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
else:
print 'Merged block submittal result: %s' % (result,)
@df.addErrback
def _(err):
log.err(err, 'Error submitting merged block:')
except:
log.err(None, 'Error while processing merged mining POW:')
if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
share = get_share(header, transactions)
print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
request.getUser(),
p2pool_data.format_hash(share.hash),
p2pool_data.format_hash(share.previous_hash),
time.time() - getwork_time,
' DEAD ON ARRIVAL' if not on_time else '',
)
self.my_share_hashes.add(share.hash)
if not on_time:
self.my_doa_share_hashes.add(share.hash)
self.tracker.add(share)
if not p2pool.DEBUG:
self.tracker.verified.add(share)
self.set_best_share()
try:
if pow_hash <= header['bits'].target or p2pool.DEBUG:
self.broadcast_share(share.hash)
except:
log.err(None, 'Error forwarding block solution:')
self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time)
if pow_hash > target:
print 'Worker %s submitted share with hash > target:' % (request.getUser(),)
print ' Hash: %56x' % (pow_hash,)
print ' Target: %56x' % (target,)
elif header_hash in received_header_hashes:
print >>sys.stderr, 'Worker %s @ %s submitted share more than once!' % (request.getUser(), request.getClientIP())
else:
received_header_hashes.add(header_hash)
self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
while len(self.recent_shares_ts_work) > 50:
self.recent_shares_ts_work.pop(0)
self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user))
return on_time
return ba, got_response