import itertools
import random
import time
+import os
from twisted.python import log
-from p2pool.bitcoin import data as bitcoin_data
-from p2pool.bitcoin import script
-from p2pool.util import memoize, expiring_dict, math, skiplist
+import p2pool
+from p2pool import skiplists, namecoin, ixcoin, i0coin, solidcoin, litecoin
+from p2pool.bitcoin import data as bitcoin_data, script
+from p2pool.util import memoize, expiring_dict, math
merkle_branch_type = bitcoin_data.ListType(bitcoin_data.ComposedType([
share_data_type = bitcoin_data.ComposedType([
- ('previous_share_hash', bitcoin_data.PossiblyNone(0, bitcoin_data.HashType())),
+ ('previous_share_hash', bitcoin_data.PossiblyNoneType(0, bitcoin_data.HashType())),
('target', bitcoin_data.FloatingIntegerType()),
('nonce', bitcoin_data.VarStrType()),
])
)
class Share(object):
- peer = None
- highest_block_on_arrival = None
-
@classmethod
def from_block(cls, block):
return cls(block['header'], gentx_to_share_info(block['txs'][0]), other_txs=block['txs'][1:])
def from_share1b(cls, share1b):
return cls(**share1b)
+ __slots__ = 'header previous_block share_info merkle_branch other_txs timestamp share_data new_script subsidy previous_hash previous_share_hash target nonce bitcoin_hash hash time_seen shared stored peer'.split(' ')
+
def __init__(self, header, share_info, merkle_branch=None, other_txs=None):
if merkle_branch is None and other_txs is None:
raise ValueError('need either merkle_branch or other_txs')
self.target = self.share_data['target']
self.nonce = self.share_data['nonce']
- if len(self.nonce) > 20:
+ if len(self.nonce) > 100:
raise ValueError('nonce too long!')
self.bitcoin_hash = bitcoin_data.block_header_type.hash256(header)
if script.get_sigop_count(self.new_script) > 1:
raise ValueError('too many sigops!')
+ # XXX eww
self.time_seen = time.time()
self.shared = False
+ self.stored = False
+ self.peer = None
def as_block(self, tracker, net):
if self.other_txs is None:
gentx = share_info_to_gentx(self.share_info, self.header['target'], tracker, net)
+ if len(gentx['tx_ins'][0]['script']) > 100:
+ raise ValueError('''coinbase too large! %i bytes''' % (len(gentx['tx_ins'][0]['script']),))
+
if check_merkle_branch(gentx, self.merkle_branch) != self.header['merkle_root']:
raise ValueError('''gentx doesn't match header via merkle_branch''')
if len(bitcoin_data.block_type.pack(dict(header=self.header, txs=[gentx] + self.other_txs))) > 1000000 - 1000:
raise ValueError('''block size too large''')
-
- self.gentx = gentx
def flag_shared(self):
self.shared = True
def __repr__(self):
- return '<Share %s>' % (' '.join('%s=%r' % (k, v) for k, v in self.__dict__.iteritems()),)
+ return '<Share %s>' % (' '.join('%s=%r' % (k, getattr(self, k)) for k in self.__slots__),)
-def get_pool_attempts_per_second(tracker, previous_share_hash, net):
- # XXX could be optimized to use nth_parent and cumulative_weights
- chain = list(itertools.islice(tracker.get_chain_to_root(previous_share_hash), net.TARGET_LOOKBEHIND))
- attempts = sum(bitcoin_data.target_to_average_attempts(share.target) for share in chain[:-1])
- time = chain[0].timestamp - chain[-1].timestamp
+def get_pool_attempts_per_second(tracker, previous_share_hash, net, dist=None):
+ if dist is None:
+ dist = net.TARGET_LOOKBEHIND
+ near = tracker.shares[previous_share_hash]
+ far = tracker.shares[tracker.get_nth_parent_hash(previous_share_hash, dist - 1)]
+ attempts = tracker.get_work(near.hash) - tracker.get_work(far.hash)
+ time = near.timestamp - far.timestamp
if time == 0:
time = 1
return attempts//time
def generate_transaction(tracker, previous_share_hash, new_script, subsidy, nonce, block_target, net):
height, last = tracker.get_height_and_last(previous_share_hash)
+ assert height >= net.CHAIN_LENGTH or last is None
if height < net.TARGET_LOOKBEHIND:
- target = bitcoin_data.FloatingIntegerType().truncate_to(2**256//2**20 - 1)
+ target = bitcoin_data.FloatingInteger.from_target_upper_bound(net.MAX_TARGET)
else:
attempts_per_second = get_pool_attempts_per_second(tracker, previous_share_hash, net)
- pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1
previous_share = tracker.shares[previous_share_hash] if previous_share_hash is not None else None
+ pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1
pre_target2 = math.clip(pre_target, (previous_share.target*9//10, previous_share.target*11//10))
pre_target3 = math.clip(pre_target2, (0, net.MAX_TARGET))
- target = bitcoin_data.FloatingIntegerType().truncate_to(pre_target3)
+ target = bitcoin_data.FloatingInteger.from_target_upper_bound(pre_target3)
attempts_to_block = bitcoin_data.target_to_average_attempts(block_target)
max_weight = net.SPREAD * attempts_to_block
- '''
- class fake_share(object):
- pass
- fake_share.new_script = new_script
- fake_share.target = target
-
- dest_weights = {}
- total_weight = 0
- for share in itertools.chain([fake_share], itertools.islice(tracker.get_chain_to_root(previous_share_hash), net.CHAIN_LENGTH)):
- weight = bitcoin_data.target_to_average_attempts(share.target)
- if weight > max_weight - total_weight:
- weight = max_weight - total_weight
-
- dest_weights[share.new_script] = dest_weights.get(share.new_script, 0) + weight
- total_weight += weight
-
- if total_weight == max_weight:
- break
- '''
-
this_weight = min(bitcoin_data.target_to_average_attempts(target), max_weight)
other_weights, other_weights_total = tracker.get_cumulative_weights(previous_share_hash, min(height, net.CHAIN_LENGTH), max(0, max_weight - this_weight))
dest_weights, total_weight = math.add_dicts([{new_script: this_weight}, other_weights]), this_weight + other_weights_total
- total_weight = sum(dest_weights.itervalues())
+ assert total_weight == sum(dest_weights.itervalues())
amounts = dict((script, subsidy*(396*weight)//(400*total_weight)) for (script, weight) in dest_weights.iteritems())
amounts[new_script] = amounts.get(new_script, 0) + subsidy*2//400
bitcoin_data.Tracker.__init__(self)
self.net = net
self.verified = bitcoin_data.Tracker()
+ self.verified.get_nth_parent_hash = self.get_nth_parent_hash # self is a superset of self.verified
- self.get_cumulative_weights = skiplist.WeightsSkipList(self)
+ self.get_cumulative_weights = skiplists.WeightsSkipList(self)
+
+ def add(self, share, known_verified=False):
+ bitcoin_data.Tracker.add(self, share)
+ if known_verified:
+ self.verified.add(share)
def attempt_verify(self, share, now):
if share.hash in self.verified.shares:
return True
height, last = self.get_height_and_last(share.hash)
- if height < self.net.CHAIN_LENGTH and last is not None:
+ if height < self.net.CHAIN_LENGTH + 1 and last is not None:
raise AssertionError()
try:
share.check(self, now, self.net)
except:
- print
- print 'Share check failed:'
- log.err()
- print
+ log.err(None, 'Share check failed:')
return False
else:
self.verified.add(share)
for bad in bads:
assert bad not in self.verified.shares
assert bad in self.heads
+ if p2pool.DEBUG:
+ print "BAD", bad
self.remove(bad)
# try to get at least CHAIN_LENGTH height for each verified head, requesting parents if needed
# decide best tree
best_tail = max(self.verified.tails, key=lambda h: self.score(max(self.verified.tails[h], key=self.verified.get_height), ht)) if self.verified.tails else None
# decide best verified head
- scores = sorted(self.verified.tails.get(best_tail, []), key=lambda h: (self.verified.get_work(h), ht.get_min_height(self.verified.shares[h].previous_block), -self.verified.shares[h].time_seen))
+ scores = sorted(self.verified.tails.get(best_tail, []), key=lambda h: (
+ self.verified.get_work(self.verified.get_nth_parent_hash(h, min(5, self.verified.get_height(h)))),
+ #self.verified.shares[h].peer is None,
+ ht.get_min_height(self.verified.shares[h].previous_block),
+ -self.verified.shares[h].time_seen
+ ))
- #if __debug__:
- #print len(self.verified.tails.get(best_tail, []))
- #for a in scores:
- # print ' ', '%x'%a, self.score(a, ht)
+ if p2pool.DEBUG:
+ print len(self.verified.tails), "chain tails and", len(self.verified.tails.get(best_tail, [])), 'chain heads. Top 10 tails:'
+ if len(scores) > 10:
+ print ' ...'
+ for h in scores[-10:]:
+ print ' ', format_hash(h), format_hash(self.verified.shares[h].previous_hash), (
+ self.verified.get_work(self.verified.get_nth_parent_hash(h, min(5, self.verified.get_height(h)))),
+ self.verified.shares[h].peer is None,
+ ht.get_min_height(self.verified.shares[h].previous_block),
+ -self.verified.shares[h].time_seen
+ )
- for share_hash in scores[:-5]:
- if self.shares[share_hash].time_seen > time.time() - 30:
- continue
- self.remove(share_hash)
- self.verified.remove(share_hash)
+ # eat away at heads
+ if scores:
+ for i in xrange(1000):
+ to_remove = set()
+ for share_hash, tail in self.heads.iteritems():
+ if share_hash in scores[-5:]:
+ #print 1
+ continue
+ if self.shares[share_hash].time_seen > time.time() - 300:
+ #print 2
+ continue
+ if share_hash not in self.verified.shares and max(self.shares[after_tail_hash].time_seen for after_tail_hash in self.reverse_shares.get(tail)) > time.time() - 120: # XXX stupid
+ #print 3
+ continue
+ to_remove.add(share_hash)
+ if not to_remove:
+ break
+ for share_hash in to_remove:
+ self.remove(share_hash)
+ if share_hash in self.verified.shares:
+ self.verified.remove(share_hash)
+ #print "_________", to_remove
- #for tail, heads in list(self.tails.iteritems()):
- # if min(self.get_height(head) for head in heads) > 2*net.CHAIN_LENGTH + 10:
- # self.remove(tail)
- # self.verified.remove(tail)
+ # drop tails
+ for i in xrange(1000):
+ to_remove = set()
+ for tail, heads in self.tails.iteritems():
+ if min(self.get_height(head) for head in heads) < 2*self.net.CHAIN_LENGTH + 10:
+ continue
+ for aftertail in self.reverse_shares.get(tail, set()):
+ if len(self.reverse_shares[self.shares[aftertail].previous_hash]) > 1: # XXX
+ print "raw"
+ continue
+ to_remove.add(aftertail)
+ if not to_remove:
+ break
+ # if removed from this, it must be removed from verified
+ #start = time.time()
+ for aftertail in to_remove:
+ if self.shares[aftertail].previous_hash not in self.tails:
+ print "erk", aftertail, self.shares[aftertail].previous_hash
+ continue
+ self.remove(aftertail)
+ if aftertail in self.verified.shares:
+ self.verified.remove(aftertail)
+ #end = time.time()
+ #print "removed! %i %f" % (len(to_remove), (end - start)/len(to_remove))
best = scores[-1] if scores else None
if best is not None:
best_share = self.verified.shares[best]
if ht.get_min_height(best_share.header['previous_block']) < ht.get_min_height(previous_block) and best_share.bitcoin_hash != previous_block and best_share.peer is not None:
- print "Stale detected!"
+ if p2pool.DEBUG:
+ print 'Stale detected! %x < %x' % (best_share.header['previous_block'], previous_block)
best = best_share.previous_hash
return best, desired
score2 = 0
attempts = 0
max_height = 0
- # XXX should only look past a certain share, not at recent ones
share2_hash = self.verified.get_nth_parent_hash(share_hash, min(self.net.CHAIN_LENGTH//2, head_height//2)) if last is not None else share_hash
- # XXX this must go in the opposite direction for max_height to make sense
for share in reversed(list(itertools.islice(self.verified.get_chain_known(share2_hash), self.net.CHAIN_LENGTH))):
max_height = max(max_height, ht.get_min_height(share.header['previous_block']))
attempts += bitcoin_data.target_to_average_attempts(share.target)
score2 = this_score
return min(head_height, self.net.CHAIN_LENGTH), score2
+def format_hash(x):
+ if x is None:
+ return 'xxxxxxxx'
+ return '%08x' % (x % 2**32)
+
+class ShareStore(object):
+ def __init__(self, prefix, net):
+ self.filename = prefix
+ self.net = net
+ self.known = None # will be filename -> set of share hashes, set of verified hashes
+
+ def get_shares(self):
+ if self.known is not None:
+ raise AssertionError()
+ known = {}
+ filenames, next = self.get_filenames_and_next()
+ for filename in filenames:
+ share_hashes, verified_hashes = known.setdefault(filename, (set(), set()))
+ with open(filename, 'rb') as f:
+ for line in f:
+ try:
+ type_id_str, data_hex = line.strip().split(' ')
+ type_id = int(type_id_str)
+ if type_id == 0:
+ share = Share.from_share1a(share1a_type.unpack(data_hex.decode('hex')))
+ yield 'share', share
+ share_hashes.add(share.hash)
+ elif type_id == 1:
+ share = Share.from_share1b(share1b_type.unpack(data_hex.decode('hex')))
+ yield 'share', share
+ share_hashes.add(share.hash)
+ elif type_id == 2:
+ verified_hash = int(data_hex, 16)
+ yield 'verified_hash', verified_hash
+ verified_hashes.add(verified_hash)
+ else:
+ raise NotImplementedError("share type %i" % (type_id,))
+ except Exception:
+ log.err(None, "Error while reading saved shares, continuing where left off:")
+ self.known = known
+
+ def _add_line(self, line):
+ filenames, next = self.get_filenames_and_next()
+ if filenames and os.path.getsize(filenames[-1]) < 10e6:
+ filename = filenames[-1]
+ else:
+ filename = next
+
+ with open(filename, 'ab') as f:
+ f.write(line + '\n')
+
+ return filename
+
+ def add_share(self, share):
+ if share.bitcoin_hash <= share.header['target']:
+ type_id, data = 1, share1b_type.pack(share.as_share1b())
+ else:
+ type_id, data = 0, share1a_type.pack(share.as_share1a())
+ filename = self._add_line("%i %s" % (type_id, data.encode('hex')))
+ share_hashes, verified_hashes = self.known.setdefault(filename, (set(), set()))
+ share_hashes.add(share.hash)
+
+ def add_verified_hash(self, share_hash):
+ filename = self._add_line("%i %x" % (2, share_hash))
+ share_hashes, verified_hashes = self.known.setdefault(filename, (set(), set()))
+ verified_hashes.add(share_hash)
+
+ def get_filenames_and_next(self):
+ suffixes = sorted(int(x[len(self.filename):]) for x in os.listdir('.') if x.startswith(self.filename) and x[len(self.filename):].isdigit())
+ return [self.filename + str(suffix) for suffix in suffixes], self.filename + str(suffixes[-1] + 1) if suffixes else self.filename + str(0)
+
+ def forget_share(self, share_hash):
+ for filename, (share_hashes, verified_hashes) in self.known.iteritems():
+ if share_hash in share_hashes:
+ share_hashes.remove(share_hash)
+ self.check_remove()
+
+ def forget_verified_share(self, share_hash):
+ for filename, (share_hashes, verified_hashes) in self.known.iteritems():
+ if share_hash in verified_hashes:
+ verified_hashes.remove(share_hash)
+ self.check_remove()
+
+ def check_remove(self):
+ to_remove = set()
+ for filename, (share_hashes, verified_hashes) in self.known.iteritems():
+ #print filename, len(share_hashes) + len(verified_hashes)
+ if not share_hashes and not verified_hashes:
+ to_remove.add(filename)
+ for filename in to_remove:
+ self.known.pop(filename)
+ os.remove(filename)
+ print "REMOVED", filename
class Mainnet(bitcoin_data.Mainnet):
- SHARE_PERIOD = 5 # seconds
+ SHARE_PERIOD = 10 # seconds
CHAIN_LENGTH = 24*60*60//5 # shares
TARGET_LOOKBEHIND = 200 # shares
SPREAD = 3 # blocks
SCRIPT = '4104ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664bac'.decode('hex')
IDENTIFIER = 'fc70035c7a81bc6f'.decode('hex')
PREFIX = '2472ef181efcd37b'.decode('hex')
- ADDRS_TABLE = 'addrs'
+ NAME = 'bitcoin'
P2P_PORT = 9333
MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = True
+ WORKER_PORT = 9332
class Testnet(bitcoin_data.Testnet):
SHARE_PERIOD = 1 # seconds
SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
IDENTIFIER = '5fc2be2d4f0d6bfb'.decode('hex')
PREFIX = '3f6057a15036f441'.decode('hex')
- ADDRS_TABLE = 'addrs_testnet'
+ NAME = 'bitcoin_testnet'
P2P_PORT = 19333
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = False
+ WORKER_PORT = 19332
+
+class NamecoinMainnet(namecoin.NamecoinMainnet):
+ SHARE_PERIOD = 10 # seconds
+ CHAIN_LENGTH = 24*60*60//10 # shares
+ TARGET_LOOKBEHIND = 3600//10 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '41043da5beb73f8f18cede1a41b0ed953123f1342b8e0216ab5bf71ed3e024201b4017f472bddb6041f17978d89ed8f8ed84f9e726b0bca80cacf96347c7153e8df0ac'.decode('hex')
+ IDENTIFIER = 'd5b1192062c4c454'.decode('hex')
+ PREFIX = 'b56f3d0fb24fc982'.decode('hex')
+ NAME = 'namecoin'
+ P2P_PORT = 9334
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = True
+ WORKER_PORT = 9331
+
+class NamecoinTestnet(namecoin.NamecoinTestnet):
+ SHARE_PERIOD = 1 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = '8dd303d014a01a60'.decode('hex')
+ PREFIX = '4d6581d24f51acbf'.decode('hex')
+ NAME = 'namecoin_testnet'
+ P2P_PORT = 19334
MAX_TARGET = 2**256//2**20 - 1
+ PERSIST = False
+ WORKER_PORT = 19331
+
+class IxcoinMainnet(ixcoin.IxcoinMainnet):
+ SHARE_PERIOD = 10 # seconds
+ CHAIN_LENGTH = 24*60*60//10 # shares
+ TARGET_LOOKBEHIND = 3600//10 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '41043da5beb73f8f18cede1a41b0ed953123f1342b8e0216ab5bf71ed3e024201b4017f472bddb6041f17978d89ed8f8ed84f9e726b0bca80cacf96347c7153e8df0ac'.decode('hex')
+ IDENTIFIER = '27b564116e2a2666'.decode('hex')
+ PREFIX = '9dd6c4a619401f2f'.decode('hex')
+ NAME = 'ixcoin'
+ P2P_PORT = 9335
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = True
+ WORKER_PORT = 9330
+
+class IxcoinTestnet(ixcoin.IxcoinTestnet):
+ SHARE_PERIOD = 1 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = '7430cbeb01249e44'.decode('hex')
+ PREFIX = '7cfffda946709c1f'.decode('hex')
+ NAME = 'ixcoin_testnet'
+ P2P_PORT = 19335
+ MAX_TARGET = 2**256//2**20 - 1
+ PERSIST = False
+ WORKER_PORT = 19330
+
+class I0coinMainnet(i0coin.I0coinMainnet):
+ SHARE_PERIOD = 10 # seconds
+ CHAIN_LENGTH = 24*60*60//10 # shares
+ TARGET_LOOKBEHIND = 3600//10 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = 'b32e3f10c2ff221b'.decode('hex')
+ PREFIX = '6155537ed977a3b5'.decode('hex')
+ NAME = 'i0coin'
+ P2P_PORT = 9336
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = False
+ WORKER_PORT = 9329
+
+class I0coinTestnet(i0coin.I0coinTestnet):
+ SHARE_PERIOD = 1 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = '7712c1a8181b5f2e'.decode('hex')
+ PREFIX = '792d2e7d770fbe68'.decode('hex')
+ NAME = 'i0coin_testnet'
+ P2P_PORT = 19336
+ MAX_TARGET = 2**256//2**20 - 1
+ PERSIST = False
+ WORKER_PORT = 19329
+
+class SolidcoinMainnet(solidcoin.SolidcoinMainnet):
+ SHARE_PERIOD = 10
+ CHAIN_LENGTH = 24*60*60//10 # shares
+ TARGET_LOOKBEHIND = 3600//10 # shares
+ SPREAD = 3 # blocks
+ SCRIPT = bitcoin_data.pubkey_hash_to_script2(bitcoin_data.address_to_pubkey_hash('sMKZ1yxHETxPYKh4Z2anWnwZDJZU7ztroy', solidcoin.SolidcoinMainnet))
+ IDENTIFIER = '9cc9c421cca258cd'.decode('hex')
+ PREFIX = 'c059125b8070f00a'.decode('hex')
+ NAME = 'solidcoin'
+ P2P_PORT = 9337
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = True
+ WORKER_PORT = 9328
+
+class LitecoinMainnet(litecoin.LitecoinMainnet):
+ SHARE_PERIOD = 10 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 12 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = 'e037d5b8c6923410'.decode('hex')
+ PREFIX = '7208c1a53ef629b0'.decode('hex')
+ NAME = 'litecoin'
+ P2P_PORT = 9338
+ MAX_TARGET = 2**256//2**32 - 1
+ PERSIST = True
+ WORKER_PORT = 9327
+
+class LitecoinTestnet(litecoin.LitecoinTestnet):
+ SHARE_PERIOD = 1 # seconds
+ CHAIN_LENGTH = 24*60*60//5 # shares
+ TARGET_LOOKBEHIND = 200 # shares
+ SPREAD = 12 # blocks
+ SCRIPT = '410403ad3dee8ab3d8a9ce5dd2abfbe7364ccd9413df1d279bf1a207849310465b0956e5904b1155ecd17574778f9949589ebfd4fb33ce837c241474a225cf08d85dac'.decode('hex')
+ IDENTIFIER = 'cca5e24ec6408b1e'.decode('hex')
+ PREFIX = 'ad9614f6466a39cf'.decode('hex')
+ NAME = 'litecoin_testnet'
+ P2P_PORT = 19338
+ MAX_TARGET = 2**256//2**20 - 1
+ PERSIST = False
+ WORKER_PORT = 19327
+
+nets = dict((net.NAME, net) for net in set([Mainnet, Testnet, NamecoinMainnet, NamecoinTestnet, IxcoinMainnet, IxcoinTestnet, I0coinMainnet, I0coinTestnet, SolidcoinMainnet, LitecoinMainnet, LitecoinTestnet]))
git://git.novaco.in / p2pool.git / blobdiff