p2pool/main.py

   1 from __future__ import division
   2
   3 import ConfigParser
   4 import StringIO
   5 import argparse
   6 import os
   7 import random
   8 import struct
   9 import sys
  10 import time
  11 import signal
  12 import traceback
  13 import urlparse
  14
  15 from twisted.internet import defer, reactor, protocol, task
  16 from twisted.web import server
  17 from twisted.python import log
  18 from nattraverso import portmapper, ipdiscover
  19
  20 import bitcoin.p2p as bitcoin_p2p, bitcoin.getwork as bitcoin_getwork, bitcoin.data as bitcoin_data
  21 from bitcoin import worker_interface
  22 from util import expiring_dict, jsonrpc, variable, deferral, math, logging, pack
  23 from . import p2p, networks, web
  24 import p2pool, p2pool.data as p2pool_data
  25
  26 @deferral.retry('Error getting work from bitcoind:', 3)
  27 @defer.inlineCallbacks
  28 def getwork(bitcoind):
  29     try:
  30         work = yield bitcoind.rpc_getmemorypool()
  31     except jsonrpc.Error, e:
  32         if e.code == -32601: # Method not found
  33             print >>sys.stderr, 'Error: Bitcoin version too old! Upgrade to v0.5 or newer!'
  34             raise deferral.RetrySilentlyException()
  35         raise
  36     packed_transactions = [x.decode('hex') for x in work['transactions']]
  37     defer.returnValue(dict(
  38         version=work['version'],
  39         previous_block_hash=int(work['previousblockhash'], 16),
  40         transactions=map(bitcoin_data.tx_type.unpack, packed_transactions),
  41         merkle_branch=bitcoin_data.calculate_merkle_branch([0] + map(bitcoin_data.hash256, packed_transactions), 0),
  42         subsidy=work['coinbasevalue'],
  43         time=work['time'],
  44         bits=bitcoin_data.FloatingIntegerType().unpack(work['bits'].decode('hex')[::-1]) if isinstance(work['bits'], (str, unicode)) else bitcoin_data.FloatingInteger(work['bits']),
  45         coinbaseflags=work['coinbaseflags'].decode('hex') if 'coinbaseflags' in work else ''.join(x.decode('hex') for x in work['coinbaseaux'].itervalues()) if 'coinbaseaux' in work else '',
  46     ))
  47
  48 @defer.inlineCallbacks
  49 def main(args, net, datadir_path, merged_urls, worker_endpoint):
  50     try:
  51         print 'p2pool (version %s)' % (p2pool.__version__,)
  52         print
  53
  54         # connect to bitcoind over JSON-RPC and do initial getmemorypool
  55         url = 'http://%s:%i/' % (args.bitcoind_address, args.bitcoind_rpc_port)
  56         print '''Testing bitcoind RPC connection to '%s' with username '%s'...''' % (url, args.bitcoind_rpc_username)
  57         bitcoind = jsonrpc.Proxy(url, (args.bitcoind_rpc_username, args.bitcoind_rpc_password))
  58         good = yield deferral.retry('Error while checking bitcoind identity:', 1)(net.PARENT.RPC_CHECK)(bitcoind)
  59         if not good:
  60             print >>sys.stderr, "    Check failed! Make sure that you're connected to the right bitcoind with --bitcoind-rpc-port!"
  61             return
  62         temp_work = yield getwork(bitcoind)
  63         print '    ...success!'
  64         print '    Current block hash: %x' % (temp_work['previous_block_hash'],)
  65         print
  66
  67         # connect to bitcoind over bitcoin-p2p
  68         print '''Testing bitcoind P2P connection to '%s:%s'...''' % (args.bitcoind_address, args.bitcoind_p2p_port)
  69         factory = bitcoin_p2p.ClientFactory(net.PARENT)
  70         reactor.connectTCP(args.bitcoind_address, args.bitcoind_p2p_port, factory)
  71         yield factory.getProtocol() # waits until handshake is successful
  72         print '    ...success!'
  73         print
  74
  75         print 'Determining payout address...'
  76         if args.pubkey_hash is None:
  77             address_path = os.path.join(datadir_path, 'cached_payout_address')
  78
  79             if os.path.exists(address_path):
  80                 with open(address_path, 'rb') as f:
  81                     address = f.read().strip('\r\n')
  82                 print '    Loaded cached address: %s...' % (address,)
  83             else:
  84                 address = None
  85
  86             if address is not None:
  87                 res = yield deferral.retry('Error validating cached address:', 5)(lambda: bitcoind.rpc_validateaddress(address))()
  88                 if not res['isvalid'] or not res['ismine']:
  89                     print '    Cached address is either invalid or not controlled by local bitcoind!'
  90                     address = None
  91
  92             if address is None:
  93                 print '    Getting payout address from bitcoind...'
  94                 address = yield deferral.retry('Error getting payout address from bitcoind:', 5)(lambda: bitcoind.rpc_getaccountaddress('p2pool'))()
  95
  96             with open(address_path, 'wb') as f:
  97                 f.write(address)
  98
  99             my_pubkey_hash = bitcoin_data.address_to_pubkey_hash(address, net.PARENT)
 100         else:
 101             my_pubkey_hash = args.pubkey_hash
 102         print '    ...success! Payout address:', bitcoin_data.pubkey_hash_to_address(my_pubkey_hash, net.PARENT)
 103         print
 104
 105         my_share_hashes = set()
 106         my_doa_share_hashes = set()
 107
 108         tracker = p2pool_data.OkayTracker(net, my_share_hashes, my_doa_share_hashes)
 109         shared_share_hashes = set()
 110         ss = p2pool_data.ShareStore(os.path.join(datadir_path, 'shares.'), net)
 111         known_verified = set()
 112         recent_blocks = []
 113         print "Loading shares..."
 114         for i, (mode, contents) in enumerate(ss.get_shares()):
 115             if mode == 'share':
 116                 if contents.hash in tracker.shares:
 117                     continue
 118                 shared_share_hashes.add(contents.hash)
 119                 contents.time_seen = 0
 120                 tracker.add(contents)
 121                 if len(tracker.shares) % 1000 == 0 and tracker.shares:
 122                     print "    %i" % (len(tracker.shares),)
 123             elif mode == 'verified_hash':
 124                 known_verified.add(contents)
 125             else:
 126                 raise AssertionError()
 127         print "    ...inserting %i verified shares..." % (len(known_verified),)
 128         for h in known_verified:
 129             if h not in tracker.shares:
 130                 ss.forget_verified_share(h)
 131                 continue
 132             tracker.verified.add(tracker.shares[h])
 133         print "    ...done loading %i shares!" % (len(tracker.shares),)
 134         print
 135         tracker.removed.watch(lambda share: ss.forget_share(share.hash))
 136         tracker.verified.removed.watch(lambda share: ss.forget_verified_share(share.hash))
 137         tracker.removed.watch(lambda share: shared_share_hashes.discard(share.hash))
 138
 139         peer_heads = expiring_dict.ExpiringDict(300) # hash -> peers that know of it
 140
 141         pre_current_work = variable.Variable(None)
 142         pre_merged_work = variable.Variable({})
 143         # information affecting work that should trigger a long-polling update
 144         current_work = variable.Variable(None)
 145         # information affecting work that should not trigger a long-polling update
 146         current_work2 = variable.Variable(None)
 147
 148         requested = expiring_dict.ExpiringDict(300)
 149
 150         print 'Initializing work...'
 151         @defer.inlineCallbacks
 152         def set_real_work1():
 153             work = yield getwork(bitcoind)
 154             current_work2.set(dict(
 155                 time=work['time'],
 156                 transactions=work['transactions'],
 157                 merkle_branch=work['merkle_branch'],
 158                 subsidy=work['subsidy'],
 159                 clock_offset=time.time() - work['time'],
 160                 last_update=time.time(),
 161             )) # second set first because everything hooks on the first
 162             pre_current_work.set(dict(
 163                 version=work['version'],
 164                 previous_block=work['previous_block_hash'],
 165                 bits=work['bits'],
 166                 coinbaseflags=work['coinbaseflags'],
 167             ))
 168         yield set_real_work1()
 169
 170         if '\ngetblock ' in (yield deferral.retry()(bitcoind.rpc_help)()):
 171             height_cacher = deferral.DeferredCacher(defer.inlineCallbacks(lambda block_hash: defer.returnValue((yield bitcoind.rpc_getblock('%x' % (block_hash,)))['blockcount'])))
 172             best_height_cached = variable.Variable((yield deferral.retry()(height_cacher)(pre_current_work.value['previous_block'])))
 173             def get_height_rel_highest(block_hash):
 174                 this_height = height_cacher.call_now(block_hash, 0)
 175                 best_height = height_cacher.call_now(pre_current_work.value['previous_block'], 0)
 176                 best_height_cached.set(max(best_height_cached.value, this_height, best_height))
 177                 return this_height - best_height_cached.value
 178         else:
 179             get_height_rel_highest = bitcoin_p2p.HeightTracker(bitcoind, factory, 5*net.SHARE_PERIOD*net.CHAIN_LENGTH/net.PARENT.BLOCK_PERIOD).get_height_rel_highest
 180
 181         def set_real_work2():
 182             best, desired = tracker.think(get_height_rel_highest, pre_current_work.value['previous_block'], pre_current_work.value['bits'])
 183
 184             t = dict(pre_current_work.value)
 185             t['best_share_hash'] = best
 186             t['mm_chains'] = pre_merged_work.value
 187             current_work.set(t)
 188
 189             t = time.time()
 190             for peer2, share_hash in desired:
 191                 if share_hash not in tracker.tails: # was received in the time tracker.think was running
 192                     continue
 193                 last_request_time, count = requested.get(share_hash, (None, 0))
 194                 if last_request_time is not None and last_request_time - 5 < t < last_request_time + 10 * 1.5**count:
 195                     continue
 196                 potential_peers = set()
 197                 for head in tracker.tails[share_hash]:
 198                     potential_peers.update(peer_heads.get(head, set()))
 199                 potential_peers = [peer for peer in potential_peers if peer.connected2]
 200                 if count == 0 and peer2 is not None and peer2.connected2:
 201                     peer = peer2
 202                 else:
 203                     peer = random.choice(potential_peers) if potential_peers and random.random() > .2 else peer2
 204                     if peer is None:
 205                         continue
 206
 207                 print 'Requesting parent share %s from %s' % (p2pool_data.format_hash(share_hash), '%s:%i' % peer.addr)
 208                 peer.send_getshares(
 209                     hashes=[share_hash],
 210                     parents=2000,
 211                     stops=list(set(tracker.heads) | set(
 212                         tracker.get_nth_parent_hash(head, min(max(0, tracker.get_height_and_last(head)[0] - 1), 10)) for head in tracker.heads
 213                     ))[:100],
 214                 )
 215                 requested[share_hash] = t, count + 1
 216         pre_current_work.changed.watch(lambda _: set_real_work2())
 217         pre_merged_work.changed.watch(lambda _: set_real_work2())
 218         set_real_work2()
 219         print '    ...success!'
 220         print
 221
 222
 223         @defer.inlineCallbacks
 224         def set_merged_work(merged_url, merged_userpass):
 225             merged_proxy = jsonrpc.Proxy(merged_url, (merged_userpass,))
 226             while True:
 227                 auxblock = yield deferral.retry('Error while calling merged getauxblock:', 1)(merged_proxy.rpc_getauxblock)()
 228                 pre_merged_work.set(dict(pre_merged_work.value, **{auxblock['chainid']: dict(
 229                     hash=int(auxblock['hash'], 16),
 230                     target=pack.IntType(256).unpack(auxblock['target'].decode('hex')),
 231                     merged_proxy=merged_proxy,
 232                 )}))
 233                 yield deferral.sleep(1)
 234         for merged_url, merged_userpass in merged_urls:
 235             set_merged_work(merged_url, merged_userpass)
 236
 237         @pre_merged_work.changed.watch
 238         def _(new_merged_work):
 239             print 'Got new merged mining work!'
 240
 241         # setup p2p logic and join p2pool network
 242
 243         class Node(p2p.Node):
 244             def handle_shares(self, shares, peer):
 245                 if len(shares) > 5:
 246                     print 'Processing %i shares from %s...' % (len(shares), '%s:%i' % peer.addr if peer is not None else None)
 247
 248                 new_count = 0
 249                 for share in shares:
 250                     if share.hash in tracker.shares:
 251                         #print 'Got duplicate share, ignoring. Hash: %s' % (p2pool_data.format_hash(share.hash),)
 252                         continue
 253
 254                     new_count += 1
 255
 256                     #print 'Received share %s from %r' % (p2pool_data.format_hash(share.hash), share.peer.addr if share.peer is not None else None)
 257
 258                     tracker.add(share)
 259
 260                 if shares and peer is not None:
 261                     peer_heads.setdefault(shares[0].hash, set()).add(peer)
 262
 263                 if new_count:
 264                     set_real_work2()
 265
 266                 if len(shares) > 5:
 267                     print '... done processing %i shares. New: %i Have: %i/~%i' % (len(shares), new_count, len(tracker.shares), 2*net.CHAIN_LENGTH)
 268
 269             def handle_share_hashes(self, hashes, peer):
 270                 t = time.time()
 271                 get_hashes = []
 272                 for share_hash in hashes:
 273                     if share_hash in tracker.shares:
 274                         continue
 275                     last_request_time, count = requested.get(share_hash, (None, 0))
 276                     if last_request_time is not None and last_request_time - 5 < t < last_request_time + 10 * 1.5**count:
 277                         continue
 278                     print 'Got share hash, requesting! Hash: %s' % (p2pool_data.format_hash(share_hash),)
 279                     get_hashes.append(share_hash)
 280                     requested[share_hash] = t, count + 1
 281
 282                 if hashes and peer is not None:
 283                     peer_heads.setdefault(hashes[0], set()).add(peer)
 284                 if get_hashes:
 285                     peer.send_getshares(hashes=get_hashes, parents=0, stops=[])
 286
 287             def handle_get_shares(self, hashes, parents, stops, peer):
 288                 parents = min(parents, 1000//len(hashes))
 289                 stops = set(stops)
 290                 shares = []
 291                 for share_hash in hashes:
 292                     for share in tracker.get_chain(share_hash, min(parents + 1, tracker.get_height(share_hash))):
 293                         if share.hash in stops:
 294                             break
 295                         shares.append(share)
 296                 print 'Sending %i shares to %s:%i' % (len(shares), peer.addr[0], peer.addr[1])
 297                 peer.sendShares(shares)
 298
 299         @tracker.verified.added.watch
 300         def _(share):
 301             if share.pow_hash <= share.header['bits'].target:
 302                 if factory.conn.value is not None:
 303                     factory.conn.value.send_block(block=share.as_block(tracker))
 304                 else:
 305                     print >>sys.stderr, 'No bitcoind connection when block submittal attempted! Erp!'
 306                 print
 307                 print 'GOT BLOCK FROM PEER! Passing to bitcoind! %s bitcoin: %s%064x' % (p2pool_data.format_hash(share.hash), net.PARENT.BLOCK_EXPLORER_URL_PREFIX, share.header_hash)
 308                 print
 309                 recent_blocks.append(dict(ts=share.timestamp, hash='%064x' % (share.header_hash,)))
 310
 311         print 'Joining p2pool network using port %i...' % (args.p2pool_port,)
 312
 313         @defer.inlineCallbacks
 314         def parse(x):
 315             if ':' in x:
 316                 ip, port = x.split(':')
 317                 defer.returnValue(((yield reactor.resolve(ip)), int(port)))
 318             else:
 319                 defer.returnValue(((yield reactor.resolve(x)), net.P2P_PORT))
 320
 321         addrs = {}
 322         if os.path.exists(os.path.join(datadir_path, 'addrs.txt')):
 323             try:
 324                 addrs.update(dict(eval(x) for x in open(os.path.join(datadir_path, 'addrs.txt'))))
 325             except:
 326                 print >>sys.stderr, "error reading addrs"
 327         for addr_df in map(parse, net.BOOTSTRAP_ADDRS):
 328             try:
 329                 addr = yield addr_df
 330                 if addr not in addrs:
 331                     addrs[addr] = (0, time.time(), time.time())
 332             except:
 333                 log.err()
 334
 335         connect_addrs = set()
 336         for addr_df in map(parse, args.p2pool_nodes):
 337             try:
 338                 connect_addrs.add((yield addr_df))
 339             except:
 340                 log.err()
 341
 342         p2p_node = Node(
 343             best_share_hash_func=lambda: current_work.value['best_share_hash'],
 344             port=args.p2pool_port,
 345             net=net,
 346             addr_store=addrs,
 347             connect_addrs=connect_addrs,
 348         )
 349         p2p_node.start()
 350
 351         task.LoopingCall(lambda: open(os.path.join(datadir_path, 'addrs.txt'), 'w').writelines(repr(x) + '\n' for x in p2p_node.addr_store.iteritems())).start(60)
 352
 353         # send share when the chain changes to their chain
 354         def work_changed(new_work):
 355             #print 'Work changed:', new_work
 356             shares = []
 357             for share in tracker.get_chain(new_work['best_share_hash'], min(5, tracker.get_height(new_work['best_share_hash']))):
 358                 if share.hash in shared_share_hashes:
 359                     break
 360                 shared_share_hashes.add(share.hash)
 361                 shares.append(share)
 362
 363             for peer in p2p_node.peers.itervalues():
 364                 peer.sendShares([share for share in shares if share.peer is not peer])
 365
 366         current_work.changed.watch(work_changed)
 367
 368         def save_shares():
 369             for share in tracker.get_chain(current_work.value['best_share_hash'], min(tracker.get_height(current_work.value['best_share_hash']), 2*net.CHAIN_LENGTH)):
 370                 ss.add_share(share)
 371                 if share.hash in tracker.verified.shares:
 372                     ss.add_verified_hash(share.hash)
 373         task.LoopingCall(save_shares).start(60)
 374
 375         print '    ...success!'
 376         print
 377
 378         if args.upnp:
 379             @defer.inlineCallbacks
 380             def upnp_thread():
 381                 while True:
 382                     try:
 383                         is_lan, lan_ip = yield ipdiscover.get_local_ip()
 384                         if is_lan:
 385                             pm = yield portmapper.get_port_mapper()
 386                             yield pm._upnp.add_port_mapping(lan_ip, args.p2pool_port, args.p2pool_port, 'p2pool', 'TCP')
 387                     except defer.TimeoutError:
 388                         pass
 389                     except:
 390                         if p2pool.DEBUG:
 391                             log.err(None, 'UPnP error:')
 392                     yield deferral.sleep(random.expovariate(1/120))
 393             upnp_thread()
 394
 395         # start listening for workers with a JSON-RPC server
 396
 397         print 'Listening for workers on %r port %i...' % (worker_endpoint[0], worker_endpoint[1])
 398
 399         if os.path.exists(os.path.join(datadir_path, 'vip_pass')):
 400             with open(os.path.join(datadir_path, 'vip_pass'), 'rb') as f:
 401                 vip_pass = f.read().strip('\r\n')
 402         else:
 403             vip_pass = '%016x' % (random.randrange(2**64),)
 404             with open(os.path.join(datadir_path, 'vip_pass'), 'wb') as f:
 405                 f.write(vip_pass)
 406         print '    Worker password:', vip_pass, '(only required for generating graphs)'
 407
 408         # setup worker logic
 409
 410         removed_unstales_var = variable.Variable((0, 0, 0))
 411         removed_doa_unstales_var = variable.Variable(0)
 412         @tracker.verified.removed.watch
 413         def _(share):
 414             if share.hash in my_share_hashes and tracker.is_child_of(share.hash, current_work.value['best_share_hash']):
 415                 assert share.share_data['stale_info'] in [0, 253, 254] # we made these shares in this instance
 416                 removed_unstales_var.set((
 417                     removed_unstales_var.value[0] + 1,
 418                     removed_unstales_var.value[1] + (1 if share.share_data['stale_info'] == 253 else 0),
 419                     removed_unstales_var.value[2] + (1 if share.share_data['stale_info'] == 254 else 0),
 420                 ))
 421             if share.hash in my_doa_share_hashes and tracker.is_child_of(share.hash, current_work.value['best_share_hash']):
 422                 removed_doa_unstales.set(removed_doa_unstales.value + 1)
 423
 424         def get_stale_counts():
 425             '''Returns (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain)'''
 426             my_shares = len(my_share_hashes)
 427             my_doa_shares = len(my_doa_share_hashes)
 428             delta = tracker.verified.get_delta(current_work.value['best_share_hash'])
 429             my_shares_in_chain = delta.my_count + removed_unstales_var.value[0]
 430             my_doa_shares_in_chain = delta.my_doa_count + removed_doa_unstales_var.value
 431             orphans_recorded_in_chain = delta.my_orphan_announce_count + removed_unstales_var.value[1]
 432             doas_recorded_in_chain = delta.my_dead_announce_count + removed_unstales_var.value[2]
 433
 434             my_shares_not_in_chain = my_shares - my_shares_in_chain
 435             my_doa_shares_not_in_chain = my_doa_shares - my_doa_shares_in_chain
 436
 437             return (my_shares_not_in_chain - my_doa_shares_not_in_chain, my_doa_shares_not_in_chain), my_shares, (orphans_recorded_in_chain, doas_recorded_in_chain)
 438
 439
 440         local_rate_monitor = math.RateMonitor(10*60)
 441
 442         class WorkerBridge(worker_interface.WorkerBridge):
 443             def __init__(self):
 444                 worker_interface.WorkerBridge.__init__(self)
 445                 self.new_work_event = current_work.changed
 446                 self.recent_shares_ts_work = []
 447
 448             def preprocess_request(self, request):
 449                 user = request.getUser() if request.getUser() is not None else ''
 450                 pubkey_hash = my_pubkey_hash
 451                 max_target = 2**256 - 1
 452                 if '/' in user:
 453                     user, min_diff_str = user.rsplit('/', 1)
 454                     try:
 455                         max_target = bitcoin_data.difficulty_to_target(float(min_diff_str))
 456                     except:
 457                         pass
 458                 try:
 459                     pubkey_hash = bitcoin_data.address_to_pubkey_hash(user, net.PARENT)
 460                 except: # XXX blah
 461                     pass
 462                 if random.uniform(0, 100) < args.worker_fee:
 463                     pubkey_hash = my_pubkey_hash
 464                 return pubkey_hash, max_target
 465
 466             def get_work(self, pubkey_hash, max_target):
 467                 if len(p2p_node.peers) == 0 and net.PERSIST:
 468                     raise jsonrpc.Error(-12345, u'p2pool is not connected to any peers')
 469                 if current_work.value['best_share_hash'] is None and net.PERSIST:
 470                     raise jsonrpc.Error(-12345, u'p2pool is downloading shares')
 471                 if time.time() > current_work2.value['last_update'] + 60:
 472                     raise jsonrpc.Error(-12345, u'lost contact with bitcoind')
 473
 474                 if current_work.value['mm_chains']:
 475                     tree, size = bitcoin_data.make_auxpow_tree(current_work.value['mm_chains'])
 476                     mm_hashes = [current_work.value['mm_chains'].get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
 477                     mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
 478                         merkle_root=bitcoin_data.merkle_hash(mm_hashes),
 479                         size=size,
 480                         nonce=0,
 481                     ))
 482                     mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in current_work.value['mm_chains'].iteritems()]
 483                 else:
 484                     mm_data = ''
 485                     mm_later = []
 486
 487                 new = time.time() > net.SWITCH_TIME
 488
 489                 if new:
 490                     share_info, generate_tx = p2pool_data.new_generate_transaction(
 491                         tracker=tracker,
 492                         share_data=dict(
 493                             previous_share_hash=current_work.value['best_share_hash'],
 494                             coinbase=(mm_data + current_work.value['coinbaseflags'])[:100],
 495                             nonce=random.randrange(2**32),
 496                             pubkey_hash=pubkey_hash,
 497                             subsidy=current_work2.value['subsidy'],
 498                             donation=math.perfect_round(65535*args.donation_percentage/100),
 499                             stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
 500                                 253 if orphans > orphans_recorded_in_chain else
 501                                 254 if doas > doas_recorded_in_chain else
 502                                 0
 503                             )(*get_stale_counts()),
 504                         ),
 505                         block_target=current_work.value['bits'].target,
 506                         desired_timestamp=int(time.time() - current_work2.value['clock_offset']),
 507                         desired_target=max_target,
 508                         net=net,
 509                     )
 510                 else:
 511                     share_info, generate_tx = p2pool_data.generate_transaction(
 512                         tracker=tracker,
 513                         share_data=dict(
 514                             previous_share_hash=current_work.value['best_share_hash'],
 515                             coinbase=(mm_data + current_work.value['coinbaseflags'])[:100],
 516                             nonce=struct.pack('<Q', random.randrange(2**64)),
 517                             new_script=bitcoin_data.pubkey_hash_to_script2(pubkey_hash),
 518                             subsidy=current_work2.value['subsidy'],
 519                             donation=math.perfect_round(65535*args.donation_percentage/100),
 520                             stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
 521                                 253 if orphans > orphans_recorded_in_chain else
 522                                 254 if doas > doas_recorded_in_chain else
 523                                 0
 524                             )(*get_stale_counts()),
 525                         ),
 526                         block_target=current_work.value['bits'].target,
 527                         desired_timestamp=int(time.time() - current_work2.value['clock_offset']),
 528                         net=net,
 529                     )
 530
 531                 target = net.PARENT.SANE_MAX_TARGET
 532                 if len(self.recent_shares_ts_work) == 50:
 533                     hash_rate = sum(work for ts, work in self.recent_shares_ts_work)//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
 534                     target = min(target, 2**256//(hash_rate * 5))
 535                 target = max(target, share_info['bits'].target)
 536                 for aux_work in current_work.value['mm_chains'].itervalues():
 537                     target = max(target, aux_work['target'])
 538
 539                 transactions = [generate_tx] + list(current_work2.value['transactions'])
 540                 packed_generate_tx = bitcoin_data.tx_type.pack(generate_tx)
 541                 merkle_root = bitcoin_data.check_merkle_branch(bitcoin_data.hash256(packed_generate_tx), 0, current_work2.value['merkle_branch'])
 542
 543                 getwork_time = time.time()
 544                 merkle_branch = current_work2.value['merkle_branch']
 545
 546                 print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
 547                     bitcoin_data.target_to_difficulty(target),
 548                     bitcoin_data.target_to_difficulty(share_info['bits'].target),
 549                     current_work2.value['subsidy']*1e-8, net.PARENT.SYMBOL,
 550                     len(current_work2.value['transactions']),
 551                 )
 552
 553                 ba = bitcoin_getwork.BlockAttempt(
 554                     version=current_work.value['version'],
 555                     previous_block=current_work.value['previous_block'],
 556                     merkle_root=merkle_root,
 557                     timestamp=current_work2.value['time'],
 558                     bits=current_work.value['bits'],
 559                     share_target=target,
 560                 )
 561
 562                 received_header_hashes = set()
 563
 564                 def got_response(header, request):
 565                     assert header['merkle_root'] == merkle_root
 566
 567                     header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
 568                     pow_hash = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
 569                     on_time = current_work.value['best_share_hash'] == share_info['share_data']['previous_share_hash']
 570
 571                     try:
 572                         if pow_hash <= header['bits'].target or p2pool.DEBUG:
 573                             @deferral.retry('Error submitting primary block: (will retry)', 10, 10)
 574                             def submit_block():
 575                                 if factory.conn.value is None:
 576                                     print >>sys.stderr, 'No bitcoind connection when block submittal attempted! %s%32x' % (net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
 577                                     raise deferral.RetrySilentlyException()
 578                                 factory.conn.value.send_block(block=dict(header=header, txs=transactions))
 579                             submit_block()
 580                             if pow_hash <= header['bits'].target:
 581                                 print
 582                                 print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
 583                                 print
 584                                 recent_blocks.append(dict(ts=time.time(), hash='%064x' % (header_hash,)))
 585                     except:
 586                         log.err(None, 'Error while processing potential block:')
 587
 588                     for aux_work, index, hashes in mm_later:
 589                         try:
 590                             if pow_hash <= aux_work['target'] or p2pool.DEBUG:
 591                                 df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
 592                                     pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
 593                                     bitcoin_data.aux_pow_type.pack(dict(
 594                                         merkle_tx=dict(
 595                                             tx=transactions[0],
 596                                             block_hash=header_hash,
 597                                             merkle_branch=merkle_branch,
 598                                             index=0,
 599                                         ),
 600                                         merkle_branch=bitcoin_data.calculate_merkle_branch(hashes, index),
 601                                         index=index,
 602                                         parent_block_header=header,
 603                                     )).encode('hex'),
 604                                 )
 605                                 @df.addCallback
 606                                 def _(result):
 607                                     if result != (pow_hash <= aux_work['target']):
 608                                         print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
 609                                     else:
 610                                         print 'Merged block submittal result: %s' % (result,)
 611                                 @df.addErrback
 612                                 def _(err):
 613                                     log.err(err, 'Error submitting merged block:')
 614                         except:
 615                             log.err(None, 'Error while processing merged mining POW:')
 616
 617                     if pow_hash <= share_info['bits'].target:
 618                         if new:
 619                             min_header = dict(header);del min_header['merkle_root']
 620                             hash_link = p2pool_data.prefix_to_hash_link(packed_generate_tx[:-32-4], p2pool_data.gentx_before_refhash)
 621                             share = p2pool_data.NewShare(net, min_header, share_info, hash_link=hash_link, merkle_branch=merkle_branch, other_txs=transactions[1:] if pow_hash <= header['bits'].target else None)
 622                         else:
 623                             share = p2pool_data.Share(net, header, share_info, merkle_branch=merkle_branch, other_txs=transactions[1:] if pow_hash <= header['bits'].target else None)
 624                         print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
 625                             request.getUser(),
 626                             p2pool_data.format_hash(share.hash),
 627                             p2pool_data.format_hash(share.previous_hash),
 628                             time.time() - getwork_time,
 629                             ' DEAD ON ARRIVAL' if not on_time else '',
 630                         )
 631                         my_share_hashes.add(share.hash)
 632                         if not on_time:
 633                             my_doa_share_hashes.add(share.hash)
 634
 635                         tracker.add(share)
 636                         if not p2pool.DEBUG:
 637                             tracker.verified.add(share)
 638                         set_real_work2()
 639
 640                         try:
 641                             if pow_hash <= header['bits'].target or p2pool.DEBUG:
 642                                 for peer in p2p_node.peers.itervalues():
 643                                     peer.sendShares([share])
 644                                 shared_share_hashes.add(share.hash)
 645                         except:
 646                             log.err(None, 'Error forwarding block solution:')
 647
 648                     if pow_hash <= target and header_hash not in received_header_hashes:
 649                         reactor.callLater(1, grapher.add_localrate_point, bitcoin_data.target_to_average_attempts(target), not on_time)
 650                         if request.getPassword() == vip_pass:
 651                             reactor.callLater(1, grapher.add_localminer_point, request.getUser(), bitcoin_data.target_to_average_attempts(target), not on_time)
 652                         self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
 653                         while len(self.recent_shares_ts_work) > 50:
 654                             self.recent_shares_ts_work.pop(0)
 655                         local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=request.getUser()))
 656
 657                     if header_hash in received_header_hashes:
 658                         print >>sys.stderr, 'Worker %s @ %s submitted share more than once!' % (request.getUser(), request.getClientIP())
 659                     received_header_hashes.add(header_hash)
 660
 661                     if pow_hash > target:
 662                         print 'Worker %s submitted share with hash > target:' % (request.getUser(),)
 663                         print '    Hash:   %56x' % (pow_hash,)
 664                         print '    Target: %56x' % (target,)
 665
 666                     return on_time
 667
 668                 return ba, got_response
 669
 670         get_current_txouts = lambda: p2pool_data.get_expected_payouts(tracker, current_work.value['best_share_hash'], current_work.value['bits'].target, current_work2.value['subsidy'], net)
 671
 672         web_root = web.get_web_root(tracker, current_work, current_work2, get_current_txouts, datadir_path, net, get_stale_counts, my_pubkey_hash, local_rate_monitor, args.worker_fee, p2p_node, my_share_hashes, recent_blocks)
 673         worker_interface.WorkerInterface(WorkerBridge()).attach_to(web_root)
 674
 675         deferral.retry('Error binding to worker port:', traceback=False)(reactor.listenTCP)(worker_endpoint[1], server.Site(web_root), interface=worker_endpoint[0])
 676
 677         with open(os.path.join(os.path.join(datadir_path, 'ready_flag')), 'wb') as f:
 678             pass
 679
 680         print '    ...success!'
 681         print
 682
 683
 684         @defer.inlineCallbacks
 685         def work_poller():
 686             while True:
 687                 flag = factory.new_block.get_deferred()
 688                 try:
 689                     yield set_real_work1()
 690                 except:
 691                     log.err()
 692                 yield defer.DeferredList([flag, deferral.sleep(15)], fireOnOneCallback=True)
 693         work_poller()
 694
 695
 696         # done!
 697         print 'Started successfully!'
 698         print
 699
 700
 701         if hasattr(signal, 'SIGALRM'):
 702             signal.signal(signal.SIGALRM, lambda signum, frame: reactor.callFromThread(
 703                 sys.stderr.write, 'Watchdog timer went off at:\n' + ''.join(traceback.format_stack())
 704             ))
 705             signal.siginterrupt(signal.SIGALRM, False)
 706             task.LoopingCall(signal.alarm, 30).start(1)
 707
 708         if args.irc_announce:
 709             from twisted.words.protocols import irc
 710             class IRCClient(irc.IRCClient):
 711                 nickname = 'p2pool%02i' % (random.randrange(100),)
 712                 channel = '#p2pool' if net.NAME == 'bitcoin' else '#p2pool-alt'
 713                 def lineReceived(self, line):
 714                     print repr(line)
 715                     irc.IRCClient.lineReceived(self, line)
 716                 def signedOn(self):
 717                     irc.IRCClient.signedOn(self)
 718                     self.factory.resetDelay()
 719                     self.join(self.channel)
 720                     self.watch_id = tracker.verified.added.watch(self._new_share)
 721                     self.announced_hashes = set()
 722                     self.delayed_messages = {}
 723                 def privmsg(self, user, channel, message):
 724                     if channel == self.channel and message in self.delayed_messages:
 725                         self.delayed_messages.pop(message).cancel()
 726                 def _new_share(self, share):
 727                     if share.pow_hash <= share.header['bits'].target and share.header_hash not in self.announced_hashes and abs(share.timestamp - time.time()) < 10*60:
 728                         self.announced_hashes.add(share.header_hash)
 729                         message = '\x02%s BLOCK FOUND by %s! %s%064x' % (net.NAME.upper(), bitcoin_data.script2_to_address(share.new_script, net.PARENT), net.PARENT.BLOCK_EXPLORER_URL_PREFIX, share.header_hash)
 730                         self.delayed_messages[message] = reactor.callLater(random.expovariate(1/5), lambda: (self.say(self.channel, message), self.delayed_messages.pop(message)))
 731                 def connectionLost(self, reason):
 732                     tracker.verified.added.unwatch(self.watch_id)
 733                     print 'IRC connection lost:', reason.getErrorMessage()
 734             class IRCClientFactory(protocol.ReconnectingClientFactory):
 735                 protocol = IRCClient
 736             reactor.connectTCP("irc.freenode.net", 6667, IRCClientFactory())
 737
 738         @defer.inlineCallbacks
 739         def status_thread():
 740             last_str = None
 741             last_time = 0
 742             while True:
 743                 yield deferral.sleep(3)
 744                 try:
 745                     if time.time() > current_work2.value['last_update'] + 60:
 746                         print >>sys.stderr, '''---> LOST CONTACT WITH BITCOIND for %s! Check that it isn't frozen or dead! <---''' % (math.format_dt(time.time() - current_work2.value['last_update']),)
 747
 748                     height = tracker.get_height(current_work.value['best_share_hash'])
 749                     this_str = 'P2Pool: %i shares in chain (%i verified/%i total) Peers: %i (%i incoming)' % (
 750                         height,
 751                         len(tracker.verified.shares),
 752                         len(tracker.shares),
 753                         len(p2p_node.peers),
 754                         sum(1 for peer in p2p_node.peers.itervalues() if peer.incoming),
 755                     ) + (' FDs: %i R/%i W' % (len(reactor.getReaders()), len(reactor.getWriters())) if p2pool.DEBUG else '')
 756
 757                     datums, dt = local_rate_monitor.get_datums_in_last()
 758                     my_att_s = sum(datum['work']/dt for datum in datums)
 759                     this_str += '\n Local: %sH/s in last %s Local dead on arrival: %s Expected time to share: %s' % (
 760                         math.format(int(my_att_s)),
 761                         math.format_dt(dt),
 762                         math.format_binomial_conf(sum(1 for datum in datums if datum['dead']), len(datums), 0.95),
 763                         math.format_dt(2**256 / tracker.shares[current_work.value['best_share_hash']].max_target / my_att_s) if my_att_s and current_work.value['best_share_hash'] else '???',
 764                     )
 765
 766                     if height > 2:
 767                         (stale_orphan_shares, stale_doa_shares), shares, _ = get_stale_counts()
 768                         stale_prop = p2pool_data.get_average_stale_prop(tracker, current_work.value['best_share_hash'], min(720, height))
 769                         real_att_s = p2pool_data.get_pool_attempts_per_second(tracker, current_work.value['best_share_hash'], min(height - 1, 720)) / (1 - stale_prop)
 770
 771                         this_str += '\n Shares: %i (%i orphan, %i dead) Stale rate: %s Efficiency: %s Current payout: %.4f %s' % (
 772                             shares, stale_orphan_shares, stale_doa_shares,
 773                             math.format_binomial_conf(stale_orphan_shares + stale_doa_shares, shares, 0.95),
 774                             math.format_binomial_conf(stale_orphan_shares + stale_doa_shares, shares, 0.95, lambda x: (1 - x)/(1 - stale_prop)),
 775                             get_current_txouts().get(bitcoin_data.pubkey_hash_to_script2(my_pubkey_hash), 0)*1e-8, net.PARENT.SYMBOL,
 776                         )
 777                         this_str += '\n Pool: %sH/s Stale rate: %.1f%% Expected time to block: %s' % (
 778                             math.format(int(real_att_s)),
 779                             100*stale_prop,
 780                             math.format_dt(2**256 / current_work.value['bits'].target / real_att_s),
 781                         )
 782
 783                     if this_str != last_str or time.time() > last_time + 15:
 784                         print this_str
 785                         last_str = this_str
 786                         last_time = time.time()
 787                 except:
 788                     log.err()
 789         status_thread()
 790     except:
 791         log.err(None, 'Fatal error:')
 792         reactor.stop()
 793
 794 def run():
 795     class FixedArgumentParser(argparse.ArgumentParser):
 796         def _read_args_from_files(self, arg_strings):
 797             # expand arguments referencing files
 798             new_arg_strings = []
 799             for arg_string in arg_strings:
 800
 801                 # for regular arguments, just add them back into the list
 802                 if not arg_string or arg_string[0] not in self.fromfile_prefix_chars:
 803                     new_arg_strings.append(arg_string)
 804
 805                 # replace arguments referencing files with the file content
 806                 else:
 807                     try:
 808                         args_file = open(arg_string[1:])
 809                         try:
 810                             arg_strings = []
 811                             for arg_line in args_file.read().splitlines():
 812                                 for arg in self.convert_arg_line_to_args(arg_line):
 813                                     arg_strings.append(arg)
 814                             arg_strings = self._read_args_from_files(arg_strings)
 815                             new_arg_strings.extend(arg_strings)
 816                         finally:
 817                             args_file.close()
 818                     except IOError:
 819                         err = sys.exc_info()[1]
 820                         self.error(str(err))
 821
 822             # return the modified argument list
 823             return new_arg_strings
 824
 825         def convert_arg_line_to_args(self, arg_line):
 826             return [arg for arg in arg_line.split() if arg.strip()]
 827
 828
 829     realnets=dict((name, net) for name, net in networks.nets.iteritems() if '_testnet' not in name)
 830
 831     parser = FixedArgumentParser(description='p2pool (version %s)' % (p2pool.__version__,), fromfile_prefix_chars='@')
 832     parser.add_argument('--version', action='version', version=p2pool.__version__)
 833     parser.add_argument('--net',
 834         help='use specified network (default: bitcoin)',
 835         action='store', choices=sorted(realnets), default='bitcoin', dest='net_name')
 836     parser.add_argument('--testnet',
 837         help='''use the network's testnet''',
 838         action='store_const', const=True, default=False, dest='testnet')
 839     parser.add_argument('--debug',
 840         help='enable debugging mode',
 841         action='store_const', const=True, default=False, dest='debug')
 842     parser.add_argument('-a', '--address',
 843         help='generate payouts to this address (default: <address requested from bitcoind>)',
 844         type=str, action='store', default=None, dest='address')
 845     parser.add_argument('--datadir',
 846         help='store data in this directory (default: <directory run_p2pool.py is in>/data)',
 847         type=str, action='store', default=None, dest='datadir')
 848     parser.add_argument('--logfile',
 849         help='''log to this file (default: data/<NET>/log)''',
 850         type=str, action='store', default=None, dest='logfile')
 851     parser.add_argument('--merged',
 852         help='call getauxblock on this url to get work for merged mining (example: http://ncuser:ncpass@127.0.0.1:10332/)',
 853         type=str, action='append', default=[], dest='merged_urls')
 854     parser.add_argument('--give-author', metavar='DONATION_PERCENTAGE',
 855         help='donate this percentage of work to author of p2pool (default: 0.5)',
 856         type=float, action='store', default=0.5, dest='donation_percentage')
 857     parser.add_argument('--irc-announce',
 858         help='announce any blocks found on irc://irc.freenode.net/#p2pool',
 859         action='store_true', default=False, dest='irc_announce')
 860
 861     p2pool_group = parser.add_argument_group('p2pool interface')
 862     p2pool_group.add_argument('--p2pool-port', metavar='PORT',
 863         help='use port PORT to listen for connections (forward this port from your router!) (default: %s)' % ', '.join('%s:%i' % (name, net.P2P_PORT) for name, net in sorted(realnets.items())),
 864         type=int, action='store', default=None, dest='p2pool_port')
 865     p2pool_group.add_argument('-n', '--p2pool-node', metavar='ADDR[:PORT]',
 866         help='connect to existing p2pool node at ADDR listening on port PORT (defaults to default p2pool P2P port) in addition to builtin addresses',
 867         type=str, action='append', default=[], dest='p2pool_nodes')
 868     parser.add_argument('--disable-upnp',
 869         help='''don't attempt to use UPnP to forward p2pool's P2P port from the Internet to this computer''',
 870         action='store_false', default=True, dest='upnp')
 871
 872     worker_group = parser.add_argument_group('worker interface')
 873     worker_group.add_argument('-w', '--worker-port', metavar='PORT or ADDR:PORT',
 874         help='listen on PORT on interface with ADDR for RPC connections from miners (default: all interfaces, %s)' % ', '.join('%s:%i' % (name, net.WORKER_PORT) for name, net in sorted(realnets.items())),
 875         type=str, action='store', default=None, dest='worker_endpoint')
 876     worker_group.add_argument('-f', '--fee', metavar='FEE_PERCENTAGE',
 877         help='''charge workers mining to their own bitcoin address (by setting their miner's username to a bitcoin address) this percentage fee to mine on your p2pool instance. Amount displayed at http://127.0.0.1:WORKER_PORT/fee (default: 0)''',
 878         type=float, action='store', default=0, dest='worker_fee')
 879
 880     bitcoind_group = parser.add_argument_group('bitcoind interface')
 881     bitcoind_group.add_argument('--bitcoind-address', metavar='BITCOIND_ADDRESS',
 882         help='connect to this address (default: 127.0.0.1)',
 883         type=str, action='store', default='127.0.0.1', dest='bitcoind_address')
 884     bitcoind_group.add_argument('--bitcoind-rpc-port', metavar='BITCOIND_RPC_PORT',
 885         help='''connect to JSON-RPC interface at this port (default: %s <read from bitcoin.conf if password not provided>)''' % ', '.join('%s:%i' % (name, net.PARENT.RPC_PORT) for name, net in sorted(realnets.items())),
 886         type=int, action='store', default=None, dest='bitcoind_rpc_port')
 887     bitcoind_group.add_argument('--bitcoind-p2p-port', metavar='BITCOIND_P2P_PORT',
 888         help='''connect to P2P interface at this port (default: %s <read from bitcoin.conf if password not provided>)''' % ', '.join('%s:%i' % (name, net.PARENT.P2P_PORT) for name, net in sorted(realnets.items())),
 889         type=int, action='store', default=None, dest='bitcoind_p2p_port')
 890
 891     bitcoind_group.add_argument(metavar='BITCOIND_RPCUSERPASS',
 892         help='bitcoind RPC interface username, then password, space-separated (only one being provided will cause the username to default to being empty, and none will cause P2Pool to read them from bitcoin.conf)',
 893         type=str, action='store', default=[], nargs='*', dest='bitcoind_rpc_userpass')
 894
 895     args = parser.parse_args()
 896
 897     if args.debug:
 898         p2pool.DEBUG = True
 899
 900     net_name = args.net_name + ('_testnet' if args.testnet else '')
 901     net = networks.nets[net_name]
 902
 903     datadir_path = os.path.join((os.path.join(os.path.dirname(sys.argv[0]), 'data') if args.datadir is None else args.datadir), net_name)
 904     if not os.path.exists(datadir_path):
 905         os.makedirs(datadir_path)
 906
 907     if len(args.bitcoind_rpc_userpass) > 2:
 908         parser.error('a maximum of two arguments are allowed')
 909     args.bitcoind_rpc_username, args.bitcoind_rpc_password = ([None, None] + args.bitcoind_rpc_userpass)[-2:]
 910
 911     if args.bitcoind_rpc_password is None:
 912         if not hasattr(net.PARENT, 'CONF_FILE_FUNC'):
 913             parser.error('This network has no configuration file function. Manually enter your RPC password.')
 914         conf_path = net.PARENT.CONF_FILE_FUNC()
 915         if not os.path.exists(conf_path):
 916             parser.error('''Bitcoin configuration file not found. Manually enter your RPC password.\r\n'''
 917                 '''If you actually haven't created a configuration file, you should create one at %s with the text:\r\n'''
 918                 '''\r\n'''
 919                 '''server=1\r\n'''
 920                 '''rpcpassword=%x''' % (conf_path, random.randrange(2**128)))
 921         with open(conf_path, 'rb') as f:
 922             cp = ConfigParser.RawConfigParser()
 923             cp.readfp(StringIO.StringIO('[x]\r\n' + f.read()))
 924             for conf_name, var_name, var_type in [
 925                 ('rpcuser', 'bitcoind_rpc_username', str),
 926                 ('rpcpassword', 'bitcoind_rpc_password', str),
 927                 ('rpcport', 'bitcoind_rpc_port', int),
 928                 ('port', 'bitcoind_p2p_port', int),
 929             ]:
 930                 if getattr(args, var_name) is None and cp.has_option('x', conf_name):
 931                     setattr(args, var_name, var_type(cp.get('x', conf_name)))
 932
 933     if args.bitcoind_rpc_username is None:
 934         args.bitcoind_rpc_username = ''
 935
 936     if args.bitcoind_rpc_port is None:
 937         args.bitcoind_rpc_port = net.PARENT.RPC_PORT
 938
 939     if args.bitcoind_p2p_port is None:
 940         args.bitcoind_p2p_port = net.PARENT.P2P_PORT
 941
 942     if args.p2pool_port is None:
 943         args.p2pool_port = net.P2P_PORT
 944
 945     if args.worker_endpoint is None:
 946         worker_endpoint = '', net.WORKER_PORT
 947     elif ':' not in args.worker_endpoint:
 948         worker_endpoint = '', int(args.worker_endpoint)
 949     else:
 950         addr, port = args.worker_endpoint.rsplit(':', 1)
 951         worker_endpoint = addr, int(port)
 952
 953     if args.address is not None:
 954         try:
 955             args.pubkey_hash = bitcoin_data.address_to_pubkey_hash(args.address, net.PARENT)
 956         except Exception, e:
 957             parser.error('error parsing address: ' + repr(e))
 958     else:
 959         args.pubkey_hash = None
 960
 961     def separate_url(url):
 962         s = urlparse.urlsplit(url)
 963         if '@' not in s.netloc:
 964             parser.error('merged url netloc must contain an "@"')
 965         userpass, new_netloc = s.netloc.rsplit('@', 1)
 966         return urlparse.urlunsplit(s._replace(netloc=new_netloc)), userpass
 967     merged_urls = map(separate_url, args.merged_urls)
 968
 969     if args.logfile is None:
 970         args.logfile = os.path.join(datadir_path, 'log')
 971
 972     logfile = logging.LogFile(args.logfile)
 973     pipe = logging.TimestampingPipe(logging.TeePipe([logging.EncodeReplacerPipe(sys.stderr), logfile]))
 974     sys.stdout = logging.AbortPipe(pipe)
 975     sys.stderr = log.DefaultObserver.stderr = logging.AbortPipe(logging.PrefixPipe(pipe, '> '))
 976     if hasattr(signal, "SIGUSR1"):
 977         def sigusr1(signum, frame):
 978             print 'Caught SIGUSR1, closing %r...' % (args.logfile,)
 979             logfile.reopen()
 980             print '...and reopened %r after catching SIGUSR1.' % (args.logfile,)
 981         signal.signal(signal.SIGUSR1, sigusr1)
 982     task.LoopingCall(logfile.reopen).start(5)
 983
 984     reactor.callWhenRunning(main, args, net, datadir_path, merged_urls, worker_endpoint)
 985     reactor.run()