class TransactionType(pack.Type):
_int_type = pack.IntType(32)
_varint_type = pack.VarIntType()
_witness_type = pack.ListType(pack.VarStrType())
_wtx_type = pack.ComposedType([
('flag', pack.IntType(8)),
('tx_ins', pack.ListType(tx_in_type)),
('tx_outs', pack.ListType(tx_out_type))
])
_ntx_type = pack.ComposedType([
('tx_outs', pack.ListType(tx_out_type)),
('lock_time', _int_type)
])
_write_type = pack.ComposedType([
('version', _int_type),
('marker', pack.IntType(8)),
('flag', pack.IntType(8)),
('tx_ins', pack.ListType(tx_in_type)),
('tx_outs', pack.ListType(tx_out_type))
])
def read(self, file):
version = self._int_type.read(file)
marker = self._varint_type.read(file)
if marker == 0:
next = self._wtx_type.read(file)
witness = [None]*len(next['tx_ins'])
for i in xrange(len(next['tx_ins'])):
witness[i] = self._witness_type.read(file)
locktime = self._int_type.read(file)
return dict(version=version, marker=marker, flag=next['flag'], tx_ins=next['tx_ins'], tx_outs=next['tx_outs'], witness=witness, lock_time=locktime)
else:
tx_ins = [None]*marker
for i in xrange(marker):
tx_ins[i] = tx_in_type.read(file)
next = self._ntx_type.read(file)
return dict(version=version, tx_ins=tx_ins, tx_outs=next['tx_outs'], lock_time=next['lock_time'])
def write(self, file, item):
if is_segwit_tx(item):
assert len(item['tx_ins']) == len(item['witness'])
self._write_type.write(file, item)
for w in item['witness']:
self._witness_type.write(file, w)
self._int_type.write(file, item['lock_time'])
return
return tx_id_type.write(file, item)
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 self.merged_work.value:
tree, size = axe_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' + axe_data.aux_pow_coinbase_type.pack(dict(
merkle_root=axe_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 = [axe_data.hash256(axe_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
local_addr_rates = self.get_local_addr_rates()
if desired_share_target is None:
desired_share_target = 2**256-1
local_hash_rate = local_addr_rates.get(pubkey_hash, 0)
if local_hash_rate > 0.0:
desired_share_target = min(desired_share_target,
axe_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
lookbehind = 3600//self.node.net.SHARE_PERIOD
block_subsidy = self.node.axed_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,
axe_data.average_attempts_to_target((axe_data.target_to_average_attempts(self.node.axed_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'] + self.node.net.COINBASEEXT)[:100],
coinbase_payload=self.current_work.value['coinbase_payload'],
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,
payment_amount=self.current_work.value['payment_amount'],
packed_payments=self.current_work.value['packed_payments'],
),
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.current_work.value['subsidy'],
)
packed_gentx = axe_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,
axe_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 = axe_data.calculate_merkle_link([None] + other_transaction_hashes, 0)
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 %s! Difficulty: %.06f Share difficulty: %.06f (speed %.06f) Total block value: %.6f %s including %i transactions' % (
axe_data.pubkey_hash_to_address(pubkey_hash, self.node.net.PARENT),
axe_data.target_to_difficulty(target),
axe_data.target_to_difficulty(share_info['bits'].target),
local_addr_rates.get(pubkey_hash, 0),
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[axe_data.pubkey_hash_to_address(pubkey_hash, self.node.net.PARENT)]=share_info['bits']
coinbase_payload_data_size = 0
if gentx['version'] == 3 and gentx['type'] == 5:
coinbase_payload_data_size = len(pack.VarStrType().pack(gentx['extra_payload']))
ba = dict(
version=self.current_work.value['version'],
previous_block=self.current_work.value['previous_block'],
merkle_link=merkle_link,
coinb1=packed_gentx[:-coinbase_payload_data_size-self.COINBASE_NONCE_LENGTH-4],
coinb2=packed_gentx[-coinbase_payload_data_size-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[:-coinbase_payload_data_size-self.COINBASE_NONCE_LENGTH-4] + coinbase_nonce + packed_gentx[-coinbase_payload_data_size-4:] if coinbase_nonce != '\0'*self.COINBASE_NONCE_LENGTH else packed_gentx
new_gentx = axe_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(axe_data.block_header_type.pack(header))
pow_hash = self.node.net.PARENT.POW_FUNC(axe_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.axed, self.node.axed_work, self.node.net)
if pow_hash <= header['bits'].target:
print
print 'GOT BLOCK FROM MINER! Passing to axed! %s%064x' % (self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
print
# New block found
self.node.factory.new_block.happened(header_hash)
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'] == axe_data.check_merkle_link(axe_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'),
axe_data.aux_pow_type.pack(dict(
merkle_tx=dict(
tx=new_gentx,
block_hash=header_hash,
merkle_link=merkle_link,
),
merkle_link=axe_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(axe_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(axe_data.target_to_average_attempts(target), not on_time, user)
self.recent_shares_ts_work.append((time.time(), axe_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=axe_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=axe_data.target_to_average_attempts(target), pubkey_hash=pubkey_hash))
return on_time
return ba, got_response
address_type = pack.ComposedType([
('services', pack.IntType(64)),
('address', pack.IPV6AddressType()),
('port', pack.IntType(16, 'big')),
])
def is_segwit_tx(tx):
return tx.get('marker', -1) == 0 and tx.get('flag', -1) >= 1
tx_in_type = pack.ComposedType([
('previous_output', pack.PossiblyNoneType(dict(hash=0, index=2**32 - 1), pack.ComposedType([
('hash', pack.IntType(256)),
('index', pack.IntType(32)),
]))),
('script', pack.VarStrType()),
('sequence', pack.PossiblyNoneType(2**32 - 1, pack.IntType(32))),
])
tx_out_type = pack.ComposedType([
('value', pack.IntType(64)),
('script', pack.VarStrType()),
])
tx_id_type = pack.ComposedType([
('version', pack.IntType(32)),
('tx_ins', pack.ListType(tx_in_type)),
('tx_outs', pack.ListType(tx_out_type)),
('lock_time', pack.IntType(32))
])