('contents', pack.VarStrType()),
])
-def load_share(share, net, peer):
+def load_share(share, net, peer_addr):
+ assert peer_addr is None or isinstance(peer_addr, tuple)
if share['type'] in [0, 1, 2, 3, 4, 5, 6, 7, 8]:
from p2pool import p2p
raise p2p.PeerMisbehavingError('sent an obsolete share')
elif share['type'] == Share.VERSION:
- return Share(net, peer, Share.share_type.unpack(share['contents']))
+ return Share(net, peer_addr, Share.share_type.unpack(share['contents']))
else:
raise ValueError('unknown share type: %r' % (share['type'],))
('desired_version', pack.VarIntType()),
])),
('new_transaction_hashes', pack.ListType(pack.IntType(256))),
- ('transaction_hash_refs', pack.ListType(pack.ComposedType([ # compressed by referencing previous shares' hashes
- ('share_count', pack.VarIntType()),
- ('tx_count', pack.VarIntType()),
- ]))),
+ ('transaction_hash_refs', pack.ListType(pack.VarIntType(), 2)), # pairs of share_count, tx_count
('far_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
('max_bits', bitcoin_data.FloatingIntegerType()),
('bits', bitcoin_data.FloatingIntegerType()),
gentx_before_refhash = pack.VarStrType().pack(DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack('\x24' + pack.IntType(256).pack(0) + pack.IntType(32).pack(0))[:2]
@classmethod
- def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, desired_other_transaction_hashes, net, known_txs=None, last_txout_nonce=0):
+ def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, desired_other_transaction_hashes_and_fees, net, known_txs=None, last_txout_nonce=0, base_subsidy=None):
previous_share = tracker.items[share_data['previous_share_hash']] if share_data['previous_share_hash'] is not None else None
height, last = tracker.get_height_and_last(share_data['previous_share_hash'])
max_bits = bitcoin_data.FloatingInteger.from_target_upper_bound(pre_target3)
bits = bitcoin_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//10, pre_target3)))
+ new_transaction_hashes = []
+ new_transaction_size = 0
+ transaction_hash_refs = []
+ other_transaction_hashes = []
+
+ past_shares = list(tracker.get_chain(share_data['previous_share_hash'], min(height, 100)))
+ tx_hash_to_this = {}
+ for i, share in enumerate(past_shares):
+ for j, tx_hash in enumerate(share.new_transaction_hashes):
+ if tx_hash not in tx_hash_to_this:
+ tx_hash_to_this[tx_hash] = [1+i, j] # share_count, tx_count
+ for tx_hash, fee in desired_other_transaction_hashes_and_fees:
+ if tx_hash in tx_hash_to_this:
+ this = tx_hash_to_this[tx_hash]
+ else:
+ if known_txs is not None:
+ this_size = bitcoin_data.tx_type.packed_size(known_txs[tx_hash])
+ if new_transaction_size + this_size > 50000: # only allow 50 kB of new txns/share
+ break
+ new_transaction_size += this_size
+ new_transaction_hashes.append(tx_hash)
+ this = [0, len(new_transaction_hashes)-1]
+ transaction_hash_refs.extend(this)
+ other_transaction_hashes.append(tx_hash)
+
+ included_transactions = set(other_transaction_hashes)
+ removed_fees = [fee for tx_hash, fee in desired_other_transaction_hashes_and_fees if tx_hash not in included_transactions]
+ definite_fees = sum(0 if fee is None else fee for tx_hash, fee in desired_other_transaction_hashes_and_fees if tx_hash in included_transactions)
+ if None not in removed_fees:
+ share_data = dict(share_data, subsidy=share_data['subsidy'] - sum(removed_fees))
+ else:
+ assert base_subsidy is not None
+ share_data = dict(share_data, subsidy=base_subsidy + definite_fees)
+
weights, total_weight, donation_weight = tracker.get_cumulative_weights(share_data['previous_share_hash'],
min(height, net.REAL_CHAIN_LENGTH),
65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target),
dests = sorted(amounts.iterkeys(), key=lambda script: (script == DONATION_SCRIPT, amounts[script], script))[-4000:] # block length limit, unlikely to ever be hit
- new_transaction_hashes = []
- new_transaction_size = 0
- transaction_hash_refs = []
- other_transaction_hashes = []
-
- for tx_hash in desired_other_transaction_hashes:
- for i, share in enumerate(tracker.get_chain(share_data['previous_share_hash'], min(height, 100))):
- if tx_hash in share.new_transaction_hashes:
- this = dict(share_count=i+1, tx_count=share.new_transaction_hashes.index(tx_hash))
- break
- else:
- if known_txs is not None:
- this_size = bitcoin_data.tx_type.packed_size(known_txs[tx_hash])
- if new_transaction_size + this_size > 50000: # only allow 50 kB of new txns/share
- break
- new_transaction_size += this_size
- new_transaction_hashes.append(tx_hash)
- this = dict(share_count=0, tx_count=len(new_transaction_hashes)-1)
- transaction_hash_refs.append(this)
- other_transaction_hashes.append(tx_hash)
-
share_info = dict(
share_data=share_data,
far_share_hash=None if last is None and height < 99 else tracker.get_nth_parent_hash(share_data['previous_share_hash'], 99),
lock_time=0,
)
- def get_share(header, transactions):
- min_header=dict(header);del min_header['merkle_root']
- return cls(net, None, dict(
+ def get_share(header, last_txout_nonce=last_txout_nonce):
+ min_header = dict(header); del min_header['merkle_root']
+ share = cls(net, None, dict(
min_header=min_header,
share_info=share_info,
ref_merkle_link=dict(branch=[], index=0),
hash_link=prefix_to_hash_link(bitcoin_data.tx_type.pack(gentx)[:-32-4-4], cls.gentx_before_refhash),
merkle_link=bitcoin_data.calculate_merkle_link([None] + other_transaction_hashes, 0),
))
+ assert share.header == header # checks merkle_root
+ return share
return share_info, gentx, other_transaction_hashes, get_share
share_info=share_info,
))), ref_merkle_link))
- __slots__ = 'net peer contents min_header share_info hash_link merkle_link hash share_data max_target target timestamp previous_hash new_script desired_version gentx_hash header pow_hash header_hash new_transaction_hashes time_seen'.split(' ')
+ __slots__ = 'net peer_addr contents min_header share_info hash_link merkle_link hash share_data max_target target timestamp previous_hash new_script desired_version gentx_hash header pow_hash header_hash new_transaction_hashes time_seen'.split(' ')
- def __init__(self, net, peer, contents):
+ def __init__(self, net, peer_addr, contents):
self.net = net
- self.peer = peer
+ self.peer_addr = peer_addr
self.contents = contents
self.min_header = contents['min_header']
self.desired_version = self.share_data['desired_version']
n = set()
- for x in self.share_info['transaction_hash_refs']:
- assert x['share_count'] < 110
- if x['share_count'] == 0:
- n.add(x['tx_count'])
+ for share_count, tx_count in self.iter_transaction_hash_refs():
+ assert share_count < 110
+ if share_count == 0:
+ n.add(tx_count)
assert n == set(range(len(self.share_info['new_transaction_hashes'])))
self.gentx_hash = check_hash_link(
self.time_seen = time.time()
def __repr__(self):
- return 'Share' + repr((self.net, self.peer, self.contents))
+ return 'Share' + repr((self.net, self.peer_addr, self.contents))
def as_share(self):
return dict(type=self.VERSION, contents=self.share_type.pack(self.contents))
+ def iter_transaction_hash_refs(self):
+ return zip(self.share_info['transaction_hash_refs'][::2], self.share_info['transaction_hash_refs'][1::2])
+
def check(self, tracker):
from p2pool import p2p
if self.share_data['previous_share_hash'] is not None:
else:
raise p2p.PeerMisbehavingError('''%s can't follow %s''' % (type(self).__name__, type(previous_share).__name__))
- other_tx_hashes = [tracker.items[tracker.get_nth_parent_hash(self.hash, x['share_count'])].share_info['new_transaction_hashes'][x['tx_count']] for x in self.share_info['transaction_hash_refs']]
+ other_tx_hashes = [tracker.items[tracker.get_nth_parent_hash(self.hash, share_count)].share_info['new_transaction_hashes'][tx_count] for share_count, tx_count in self.iter_transaction_hash_refs()]
- share_info, gentx, other_tx_hashes2, get_share = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.contents['ref_merkle_link'], other_tx_hashes, self.net, last_txout_nonce=self.contents['last_txout_nonce'])
+ share_info, gentx, other_tx_hashes2, get_share = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.contents['ref_merkle_link'], [(h, None) for h in other_tx_hashes], self.net, last_txout_nonce=self.contents['last_txout_nonce'])
assert other_tx_hashes2 == other_tx_hashes
if share_info != self.share_info:
raise ValueError('share_info invalid')
return gentx # only used by as_block
def get_other_tx_hashes(self, tracker):
- parents_needed = max(x['share_count'] for x in self.share_info['transaction_hash_refs']) if self.share_info['transaction_hash_refs'] else 0
+ parents_needed = max(share_count for share_count, tx_count in self.iter_transaction_hash_refs()) if self.share_info['transaction_hash_refs'] else 0
parents = tracker.get_height(self.hash) - 1
if parents < parents_needed:
return None
last_shares = list(tracker.get_chain(self.hash, parents_needed + 1))
- return [last_shares[x['share_count']].share_info['new_transaction_hashes'][x['tx_count']] for x in self.share_info['transaction_hash_refs']]
+ return [last_shares[share_count].share_info['new_transaction_hashes'][tx_count] for share_count, tx_count in self.iter_transaction_hash_refs()]
def _get_other_txs(self, tracker, known_txs):
other_tx_hashes = self.get_other_tx_hashes(tracker)
return [known_txs[tx_hash] for tx_hash in other_tx_hashes]
def should_punish_reason(self, previous_block, bits, tracker, known_txs):
- if (self.header['previous_block'], self.header['bits']) != (previous_block, bits) and self.header_hash != previous_block and self.peer is not None:
+ if (self.header['previous_block'], self.header['bits']) != (previous_block, bits) and self.header_hash != previous_block and self.peer_addr is not None:
return True, 'Block-stale detected! %x < %x' % (self.header['previous_block'], previous_block)
if self.pow_hash <= self.header['bits'].target:
other_txs = self._get_other_txs(tracker, known_txs)
if other_txs is None:
- if self.time_seen is not None: # ignore if loaded from ShareStore
+ if self.time_seen != 0: # ignore if loaded from ShareStore
return True, 'not all txs present'
else:
all_txs_size = sum(bitcoin_data.tx_type.packed_size(tx) for tx in other_txs)
else:
if last is not None:
desired.add((
- self.items[random.choice(list(self.reverse[last]))].peer,
+ self.items[random.choice(list(self.reverse[last]))].peer_addr,
last,
max(x.timestamp for x in self.get_chain(head, min(head_height, 5))),
min(x.target for x in self.get_chain(head, min(head_height, 5))),
break
if head_height < self.net.CHAIN_LENGTH and last_last_hash is not None:
desired.add((
- self.items[random.choice(list(self.verified.reverse[last_hash]))].peer,
+ self.items[random.choice(list(self.verified.reverse[last_hash]))].peer_addr,
last_last_hash,
max(x.timestamp for x in self.get_chain(head, min(head_height, 5))),
min(x.target for x in self.get_chain(head, min(head_height, 5))),
# decide best verified head
decorated_heads = sorted(((
self.verified.get_work(self.verified.get_nth_parent_hash(h, min(5, self.verified.get_height(h)))),
- #self.items[h].peer is None,
+ #self.items[h].peer_addr is None,
-self.items[h].should_punish_reason(previous_block, bits, self, known_txs)[0],
-self.items[h].time_seen,
), h) for h in self.verified.tails.get(best_tail, []))
if p2pool.DEBUG:
print 'Desire %i shares. Cutoff: %s old diff>%.2f' % (len(desired), math.format_dt(time.time() - timestamp_cutoff), bitcoin_data.target_to_difficulty(target_cutoff))
- for peer, hash, ts, targ in desired:
- print ' ', '%s:%i' % peer.addr if peer is not None else None, format_hash(hash), math.format_dt(time.time() - ts), bitcoin_data.target_to_difficulty(targ), ts >= timestamp_cutoff, targ <= target_cutoff
+ for peer_addr, hash, ts, targ in desired:
+ print ' ', '%s:%i' % peer_addr, format_hash(hash), math.format_dt(time.time() - ts), bitcoin_data.target_to_difficulty(targ), ts >= timestamp_cutoff, targ <= target_cutoff
- return best, [(peer, hash) for peer, hash, ts, targ in desired if ts >= timestamp_cutoff], decorated_heads
+ return best, [(peer_addr, hash) for peer_addr, hash, ts, targ in desired if ts >= timestamp_cutoff], decorated_heads
def score(self, share_hash, block_rel_height_func):
# returns approximate lower bound on chain's hashrate in the last self.net.CHAIN_LENGTH*15//16*self.net.SHARE_PERIOD time
block_height = max(block_rel_height_func(share.header['previous_block']) for share in
self.verified.get_chain(end_point, self.net.CHAIN_LENGTH//16))
- return self.net.CHAIN_LENGTH, self.verified.get_delta(share_hash, end_point).work//((0 - block_height + 1)*self.net.PARENT.BLOCK_PERIOD)
+ return self.net.CHAIN_LENGTH, self.verified.get_delta(share_hash, end_point).work/((0 - block_height + 1)*self.net.PARENT.BLOCK_PERIOD)
def get_pool_attempts_per_second(tracker, previous_share_hash, dist, min_work=False, integer=False):
assert dist >= 2
desired_version_counts = get_desired_version_counts(tracker, best_share,
min(net.CHAIN_LENGTH, 60*60//net.SHARE_PERIOD, tracker.get_height(best_share)))
majority_desired_version = max(desired_version_counts, key=lambda k: desired_version_counts[k])
- if majority_desired_version > Share.VERSION and desired_version_counts[majority_desired_version] > sum(desired_version_counts.itervalues())/2:
+ if majority_desired_version > 11 and desired_version_counts[majority_desired_version] > sum(desired_version_counts.itervalues())/2:
res.append('A MAJORITY OF SHARES CONTAIN A VOTE FOR AN UNSUPPORTED SHARE IMPLEMENTATION! (v%i with %i%% support)\n'
'An upgrade is likely necessary. Check http://p2pool.forre.st/ for more information.' % (
majority_desired_version, 100*desired_version_counts[majority_desired_version]/sum(desired_version_counts.itervalues())))
git://git.novaco.in / p2pool.git / blobdiff