p2pool/main.py

   1 from __future__ import division
   2
   3 import ConfigParser
   4 import StringIO
   5 import argparse
   6 import base64
   7 import os
   8 import random
   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, height_tracker
  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 def bitcoin_version_good(v):
  27    major, minor, patch = v//10000, v//100%100, v%100
  28    return (major >= 6) or (major == 5 and minor == 0 and patch >= 6) or (major == 5 and minor >= 4)
  29
  30 @deferral.retry('Error getting work from bitcoind:', 3)
  31 @defer.inlineCallbacks
  32 def getwork(bitcoind):
  33     try:
  34         work = yield bitcoind.rpc_getmemorypool()
  35     except jsonrpc.Error, e:
  36         if e.code == -32601: # Method not found
  37             print >>sys.stderr, 'Error: Bitcoin version too old! Upgrade to v0.5 or newer!'
  38             raise deferral.RetrySilentlyException()
  39         raise
  40     packed_transactions = [x.decode('hex') for x in work['transactions']]
  41     defer.returnValue(dict(
  42         version=work['version'],
  43         previous_block_hash=int(work['previousblockhash'], 16),
  44         transactions=map(bitcoin_data.tx_type.unpack, packed_transactions),
  45         merkle_branch=bitcoin_data.calculate_merkle_branch([0] + map(bitcoin_data.hash256, packed_transactions), 0),
  46         subsidy=work['coinbasevalue'],
  47         time=work['time'],
  48         bits=bitcoin_data.FloatingIntegerType().unpack(work['bits'].decode('hex')[::-1]) if isinstance(work['bits'], (str, unicode)) else bitcoin_data.FloatingInteger(work['bits']),
  49         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 '',
  50     ))
  51
  52 @defer.inlineCallbacks
  53 def main(args, net, datadir_path, merged_urls, worker_endpoint):
  54     try:
  55         print 'p2pool (version %s)' % (p2pool.__version__,)
  56         print
  57
  58         # connect to bitcoind over JSON-RPC and do initial getmemorypool
  59         url = 'http://%s:%i/' % (args.bitcoind_address, args.bitcoind_rpc_port)
  60         print '''Testing bitcoind RPC connection to '%s' with username '%s'...''' % (url, args.bitcoind_rpc_username)
  61         bitcoind = jsonrpc.Proxy(url, dict(Authorization='Basic ' + base64.b64encode(args.bitcoind_rpc_username + ':' + args.bitcoind_rpc_password)), timeout=30)
  62         @defer.inlineCallbacks
  63         def check():
  64             if not (yield net.PARENT.RPC_CHECK)(bitcoind):
  65                 print >>sys.stderr, "    Check failed! Make sure that you're connected to the right bitcoind with --bitcoind-rpc-port!"
  66                 raise deferral.RetrySilentlyException()
  67             if not bitcoin_version_good((yield bitcoind.rpc_getinfo())['version']):
  68                 print >>sys.stderr, '    Bitcoin version too old! BIP16 support required! Upgrade to 0.6.0rc4 or greater!'
  69                 raise deferral.RetrySilentlyException()
  70         yield deferral.retry('Error while checking Bitcoin connection:', 1)(check)()
  71         temp_work = yield getwork(bitcoind)
  72         print '    ...success!'
  73         print '    Current block hash: %x' % (temp_work['previous_block_hash'],)
  74         print
  75
  76         # connect to bitcoind over bitcoin-p2p
  77         print '''Testing bitcoind P2P connection to '%s:%s'...''' % (args.bitcoind_address, args.bitcoind_p2p_port)
  78         factory = bitcoin_p2p.ClientFactory(net.PARENT)
  79         reactor.connectTCP(args.bitcoind_address, args.bitcoind_p2p_port, factory)
  80         yield factory.getProtocol() # waits until handshake is successful
  81         print '    ...success!'
  82         print
  83
  84         print 'Determining payout address...'
  85         if args.pubkey_hash is None:
  86             address_path = os.path.join(datadir_path, 'cached_payout_address')
  87
  88             if os.path.exists(address_path):
  89                 with open(address_path, 'rb') as f:
  90                     address = f.read().strip('\r\n')
  91                 print '    Loaded cached address: %s...' % (address,)
  92             else:
  93                 address = None
  94
  95             if address is not None:
  96                 res = yield deferral.retry('Error validating cached address:', 5)(lambda: bitcoind.rpc_validateaddress(address))()
  97                 if not res['isvalid'] or not res['ismine']:
  98                     print '    Cached address is either invalid or not controlled by local bitcoind!'
  99                     address = None
 100
 101             if address is None:
 102                 print '    Getting payout address from bitcoind...'
 103                 address = yield deferral.retry('Error getting payout address from bitcoind:', 5)(lambda: bitcoind.rpc_getaccountaddress('p2pool'))()
 104
 105             with open(address_path, 'wb') as f:
 106                 f.write(address)
 107
 108             my_pubkey_hash = bitcoin_data.address_to_pubkey_hash(address, net.PARENT)
 109         else:
 110             my_pubkey_hash = args.pubkey_hash
 111         print '    ...success! Payout address:', bitcoin_data.pubkey_hash_to_address(my_pubkey_hash, net.PARENT)
 112         print
 113
 114         my_share_hashes = set()
 115         my_doa_share_hashes = set()
 116
 117         tracker = p2pool_data.OkayTracker(net, my_share_hashes, my_doa_share_hashes)
 118         shared_share_hashes = set()
 119         ss = p2pool_data.ShareStore(os.path.join(datadir_path, 'shares.'), net)
 120         known_verified = set()
 121         recent_blocks = []
 122         print "Loading shares..."
 123         for i, (mode, contents) in enumerate(ss.get_shares()):
 124             if mode == 'share':
 125                 if contents.hash in tracker.shares:
 126                     continue
 127                 shared_share_hashes.add(contents.hash)
 128                 contents.time_seen = 0
 129                 tracker.add(contents)
 130                 if len(tracker.shares) % 1000 == 0 and tracker.shares:
 131                     print "    %i" % (len(tracker.shares),)
 132             elif mode == 'verified_hash':
 133                 known_verified.add(contents)
 134             else:
 135                 raise AssertionError()
 136         print "    ...inserting %i verified shares..." % (len(known_verified),)
 137         for h in known_verified:
 138             if h not in tracker.shares:
 139                 ss.forget_verified_share(h)
 140                 continue
 141             tracker.verified.add(tracker.shares[h])
 142         print "    ...done loading %i shares!" % (len(tracker.shares),)
 143         print
 144         tracker.removed.watch(lambda share: ss.forget_share(share.hash))
 145         tracker.verified.removed.watch(lambda share: ss.forget_verified_share(share.hash))
 146         tracker.removed.watch(lambda share: shared_share_hashes.discard(share.hash))
 147
 148         peer_heads = expiring_dict.ExpiringDict(300) # hash -> peers that know of it
 149
 150         pre_current_work = variable.Variable(None)
 151         pre_merged_work = variable.Variable({})
 152         # information affecting work that should trigger a long-polling update
 153         current_work = variable.Variable(None)
 154         # information affecting work that should not trigger a long-polling update
 155         current_work2 = variable.Variable(None)
 156
 157         requested = expiring_dict.ExpiringDict(300)
 158
 159         print 'Initializing work...'
 160         @defer.inlineCallbacks
 161         def set_real_work1():
 162             work = yield getwork(bitcoind)
 163             current_work2.set(dict(
 164                 time=work['time'],
 165                 transactions=work['transactions'],
 166                 merkle_branch=work['merkle_branch'],
 167                 subsidy=work['subsidy'],
 168                 clock_offset=time.time() - work['time'],
 169                 last_update=time.time(),
 170             )) # second set first because everything hooks on the first
 171             pre_current_work.set(dict(
 172                 version=work['version'],
 173                 previous_block=work['previous_block_hash'],
 174                 bits=work['bits'],
 175                 coinbaseflags=work['coinbaseflags'],
 176             ))
 177         yield set_real_work1()
 178
 179         get_height_rel_highest = yield height_tracker.get_height_rel_highest_func(bitcoind, factory, lambda: pre_current_work.value['previous_block'], net)
 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, dict(Authorization='Basic ' + base64.b64encode(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         @deferral.retry('Error submitting block: (will retry)', 10, 10)
 300         @defer.inlineCallbacks
 301         def submit_block(block, ignore_failure):
 302             success = yield bitcoind.rpc_getmemorypool(bitcoin_data.block_type.pack(block).encode('hex'))
 303             success_expected = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(block['header'])) <= block['header']['bits'].target
 304             if (not success and success_expected and not ignore_failure) or (success and not success_expected):
 305                 print >>sys.stderr, 'Block submittal result: %s Expected: %s' % (result, expected_result)
 306
 307         @tracker.verified.added.watch
 308         def _(share):
 309             if share.pow_hash <= share.header['bits'].target:
 310                 submit_block(share.as_block(tracker), ignore_failure=True)
 311                 print
 312                 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)
 313                 print
 314                 recent_blocks.append(dict(ts=share.timestamp, hash='%064x' % (share.header_hash,)))
 315
 316         print 'Joining p2pool network using port %i...' % (args.p2pool_port,)
 317
 318         @defer.inlineCallbacks
 319         def parse(x):
 320             if ':' in x:
 321                 ip, port = x.split(':')
 322                 defer.returnValue(((yield reactor.resolve(ip)), int(port)))
 323             else:
 324                 defer.returnValue(((yield reactor.resolve(x)), net.P2P_PORT))
 325
 326         addrs = {}
 327         if os.path.exists(os.path.join(datadir_path, 'addrs.txt')):
 328             try:
 329                 addrs.update(dict(eval(x) for x in open(os.path.join(datadir_path, 'addrs.txt'))))
 330             except:
 331                 print >>sys.stderr, "error reading addrs"
 332         for addr_df in map(parse, net.BOOTSTRAP_ADDRS):
 333             try:
 334                 addr = yield addr_df
 335                 if addr not in addrs:
 336                     addrs[addr] = (0, time.time(), time.time())
 337             except:
 338                 log.err()
 339
 340         connect_addrs = set()
 341         for addr_df in map(parse, args.p2pool_nodes):
 342             try:
 343                 connect_addrs.add((yield addr_df))
 344             except:
 345                 log.err()
 346
 347         p2p_node = Node(
 348             best_share_hash_func=lambda: current_work.value['best_share_hash'],
 349             port=args.p2pool_port,
 350             net=net,
 351             addr_store=addrs,
 352             connect_addrs=connect_addrs,
 353             max_incoming_conns=args.p2pool_conns,
 354         )
 355         p2p_node.start()
 356
 357         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)
 358
 359         # send share when the chain changes to their chain
 360         def work_changed(new_work):
 361             #print 'Work changed:', new_work
 362             shares = []
 363             for share in tracker.get_chain(new_work['best_share_hash'], min(5, tracker.get_height(new_work['best_share_hash']))):
 364                 if share.hash in shared_share_hashes:
 365                     break
 366                 shared_share_hashes.add(share.hash)
 367                 shares.append(share)
 368
 369             for peer in p2p_node.peers.itervalues():
 370                 peer.sendShares([share for share in shares if share.peer is not peer])
 371
 372         current_work.changed.watch(work_changed)
 373
 374         def save_shares():
 375             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)):
 376                 ss.add_share(share)
 377                 if share.hash in tracker.verified.shares:
 378                     ss.add_verified_hash(share.hash)
 379         task.LoopingCall(save_shares).start(60)
 380
 381         print '    ...success!'
 382         print
 383
 384         if args.upnp:
 385             @defer.inlineCallbacks
 386             def upnp_thread():
 387                 while True:
 388                     try:
 389                         is_lan, lan_ip = yield ipdiscover.get_local_ip()
 390                         if is_lan:
 391                             pm = yield portmapper.get_port_mapper()
 392                             yield pm._upnp.add_port_mapping(lan_ip, args.p2pool_port, args.p2pool_port, 'p2pool', 'TCP')
 393                     except defer.TimeoutError:
 394                         pass
 395                     except:
 396                         if p2pool.DEBUG:
 397                             log.err(None, 'UPnP error:')
 398                     yield deferral.sleep(random.expovariate(1/120))
 399             upnp_thread()
 400
 401         # start listening for workers with a JSON-RPC server
 402
 403         print 'Listening for workers on %r port %i...' % (worker_endpoint[0], worker_endpoint[1])
 404
 405         if os.path.exists(os.path.join(datadir_path, 'vip_pass')):
 406             with open(os.path.join(datadir_path, 'vip_pass'), 'rb') as f:
 407                 vip_pass = f.read().strip('\r\n')
 408         else:
 409             vip_pass = '%016x' % (random.randrange(2**64),)
 410             with open(os.path.join(datadir_path, 'vip_pass'), 'wb') as f:
 411                 f.write(vip_pass)
 412         print '    Worker password:', vip_pass, '(only required for generating graphs)'
 413
 414         # setup worker logic
 415
 416         removed_unstales_var = variable.Variable((0, 0, 0))
 417         removed_doa_unstales_var = variable.Variable(0)
 418         @tracker.verified.removed.watch
 419         def _(share):
 420             if share.hash in my_share_hashes and tracker.is_child_of(share.hash, current_work.value['best_share_hash']):
 421                 assert share.share_data['stale_info'] in [0, 253, 254] # we made these shares in this instance
 422                 removed_unstales_var.set((
 423                     removed_unstales_var.value[0] + 1,
 424                     removed_unstales_var.value[1] + (1 if share.share_data['stale_info'] == 253 else 0),
 425                     removed_unstales_var.value[2] + (1 if share.share_data['stale_info'] == 254 else 0),
 426                 ))
 427             if share.hash in my_doa_share_hashes and tracker.is_child_of(share.hash, current_work.value['best_share_hash']):
 428                 removed_doa_unstales.set(removed_doa_unstales.value + 1)
 429
 430         def get_stale_counts():
 431             '''Returns (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain)'''
 432             my_shares = len(my_share_hashes)
 433             my_doa_shares = len(my_doa_share_hashes)
 434             delta = tracker.verified.get_delta(current_work.value['best_share_hash'])
 435             my_shares_in_chain = delta.my_count + removed_unstales_var.value[0]
 436             my_doa_shares_in_chain = delta.my_doa_count + removed_doa_unstales_var.value
 437             orphans_recorded_in_chain = delta.my_orphan_announce_count + removed_unstales_var.value[1]
 438             doas_recorded_in_chain = delta.my_dead_announce_count + removed_unstales_var.value[2]
 439
 440             my_shares_not_in_chain = my_shares - my_shares_in_chain
 441             my_doa_shares_not_in_chain = my_doa_shares - my_doa_shares_in_chain
 442
 443             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)
 444
 445
 446         pseudoshare_received = variable.Event()
 447         local_rate_monitor = math.RateMonitor(10*60)
 448
 449         class WorkerBridge(worker_interface.WorkerBridge):
 450             def __init__(self):
 451                 worker_interface.WorkerBridge.__init__(self)
 452                 self.new_work_event = current_work.changed
 453                 self.recent_shares_ts_work = []
 454
 455             def preprocess_request(self, request):
 456                 user = request.getUser() if request.getUser() is not None else ''
 457
 458                 desired_pseudoshare_target = None
 459                 if '+' in user:
 460                     user, desired_pseudoshare_difficulty_str = user.rsplit('+', 1)
 461                     try:
 462                         desired_pseudoshare_target = bitcoin_data.difficulty_to_target(float(desired_pseudoshare_difficulty_str))
 463                     except:
 464                         pass
 465
 466                 desired_share_target = 2**256 - 1
 467                 if '/' in user:
 468                     user, min_diff_str = user.rsplit('/', 1)
 469                     try:
 470                         desired_share_target = bitcoin_data.difficulty_to_target(float(min_diff_str))
 471                     except:
 472                         pass
 473
 474                 if random.uniform(0, 100) < args.worker_fee:
 475                     pubkey_hash = my_pubkey_hash
 476                 else:
 477                     try:
 478                         pubkey_hash = bitcoin_data.address_to_pubkey_hash(user, net.PARENT)
 479                     except: # XXX blah
 480                         pubkey_hash = my_pubkey_hash
 481
 482                 return pubkey_hash, desired_share_target, desired_pseudoshare_target
 483
 484             def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
 485                 if len(p2p_node.peers) == 0 and net.PERSIST:
 486                     raise jsonrpc.Error(-12345, u'p2pool is not connected to any peers')
 487                 if current_work.value['best_share_hash'] is None and net.PERSIST:
 488                     raise jsonrpc.Error(-12345, u'p2pool is downloading shares')
 489                 if time.time() > current_work2.value['last_update'] + 60:
 490                     raise jsonrpc.Error(-12345, u'lost contact with bitcoind')
 491
 492                 if current_work.value['mm_chains']:
 493                     tree, size = bitcoin_data.make_auxpow_tree(current_work.value['mm_chains'])
 494                     mm_hashes = [current_work.value['mm_chains'].get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
 495                     mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
 496                         merkle_root=bitcoin_data.merkle_hash(mm_hashes),
 497                         size=size,
 498                         nonce=0,
 499                     ))
 500                     mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in current_work.value['mm_chains'].iteritems()]
 501                 else:
 502                     mm_data = ''
 503                     mm_later = []
 504
 505                 share_info, generate_tx = p2pool_data.Share.generate_transaction(
 506                     tracker=tracker,
 507                     share_data=dict(
 508                         previous_share_hash=current_work.value['best_share_hash'],
 509                         coinbase=(mm_data + current_work.value['coinbaseflags'])[:100],
 510                         nonce=random.randrange(2**32),
 511                         pubkey_hash=pubkey_hash,
 512                         subsidy=current_work2.value['subsidy'],
 513                         donation=math.perfect_round(65535*args.donation_percentage/100),
 514                         stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
 515                             253 if orphans > orphans_recorded_in_chain else
 516                             254 if doas > doas_recorded_in_chain else
 517                             0
 518                         )(*get_stale_counts()),
 519                     ),
 520                     block_target=current_work.value['bits'].target,
 521                     desired_timestamp=int(time.time() - current_work2.value['clock_offset']),
 522                     desired_target=desired_share_target,
 523                     net=net,
 524                 )
 525
 526                 target = net.PARENT.SANE_MAX_TARGET
 527                 if desired_pseudoshare_target is None:
 528                     if len(self.recent_shares_ts_work) == 50:
 529                         hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:])//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
 530                         target = min(target, 2**256//hash_rate)
 531                 else:
 532                     target = min(target, desired_pseudoshare_target)
 533                 target = max(target, share_info['bits'].target)
 534                 for aux_work in current_work.value['mm_chains'].itervalues():
 535                     target = max(target, aux_work['target'])
 536
 537                 transactions = [generate_tx] + list(current_work2.value['transactions'])
 538                 packed_generate_tx = bitcoin_data.tx_type.pack(generate_tx)
 539                 merkle_root = bitcoin_data.check_merkle_branch(bitcoin_data.hash256(packed_generate_tx), 0, current_work2.value['merkle_branch'])
 540
 541                 getwork_time = time.time()
 542                 merkle_branch = current_work2.value['merkle_branch']
 543
 544                 print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
 545                     bitcoin_data.target_to_difficulty(target),
 546                     bitcoin_data.target_to_difficulty(share_info['bits'].target),
 547                     current_work2.value['subsidy']*1e-8, net.PARENT.SYMBOL,
 548                     len(current_work2.value['transactions']),
 549                 )
 550
 551                 ba = bitcoin_getwork.BlockAttempt(
 552                     version=current_work.value['version'],
 553                     previous_block=current_work.value['previous_block'],
 554                     merkle_root=merkle_root,
 555                     timestamp=current_work2.value['time'],
 556                     bits=current_work.value['bits'],
 557                     share_target=target,
 558                 )
 559
 560                 received_header_hashes = set()
 561
 562                 def got_response(header, request):
 563                     assert header['merkle_root'] == merkle_root
 564
 565                     header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
 566                     pow_hash = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
 567                     on_time = current_work.value['best_share_hash'] == share_info['share_data']['previous_share_hash']
 568
 569                     try:
 570                         if pow_hash <= header['bits'].target or p2pool.DEBUG:
 571                             submit_block(dict(header=header, txs=transactions), ignore_failure=False)
 572                             if pow_hash <= header['bits'].target:
 573                                 print
 574                                 print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
 575                                 print
 576                                 recent_blocks.append(dict(ts=time.time(), hash='%064x' % (header_hash,)))
 577                     except:
 578                         log.err(None, 'Error while processing potential block:')
 579
 580                     for aux_work, index, hashes in mm_later:
 581                         try:
 582                             if pow_hash <= aux_work['target'] or p2pool.DEBUG:
 583                                 df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
 584                                     pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
 585                                     bitcoin_data.aux_pow_type.pack(dict(
 586                                         merkle_tx=dict(
 587                                             tx=transactions[0],
 588                                             block_hash=header_hash,
 589                                             merkle_branch=merkle_branch,
 590                                             index=0,
 591                                         ),
 592                                         merkle_branch=bitcoin_data.calculate_merkle_branch(hashes, index),
 593                                         index=index,
 594                                         parent_block_header=header,
 595                                     )).encode('hex'),
 596                                 )
 597                                 @df.addCallback
 598                                 def _(result):
 599                                     if result != (pow_hash <= aux_work['target']):
 600                                         print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
 601                                     else:
 602                                         print 'Merged block submittal result: %s' % (result,)
 603                                 @df.addErrback
 604                                 def _(err):
 605                                     log.err(err, 'Error submitting merged block:')
 606                         except:
 607                             log.err(None, 'Error while processing merged mining POW:')
 608
 609                     if pow_hash <= share_info['bits'].target:
 610                         min_header = dict(header);del min_header['merkle_root']
 611                         hash_link = p2pool_data.prefix_to_hash_link(packed_generate_tx[:-32-4], p2pool_data.Share.gentx_before_refhash)
 612                         share = p2pool_data.Share(net, None, min_header, share_info, hash_link=hash_link, merkle_branch=merkle_branch, other_txs=transactions[1:] if pow_hash <= header['bits'].target else None)
 613
 614                         print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
 615                             request.getUser(),
 616                             p2pool_data.format_hash(share.hash),
 617                             p2pool_data.format_hash(share.previous_hash),
 618                             time.time() - getwork_time,
 619                             ' DEAD ON ARRIVAL' if not on_time else '',
 620                         )
 621                         my_share_hashes.add(share.hash)
 622                         if not on_time:
 623                             my_doa_share_hashes.add(share.hash)
 624
 625                         tracker.add(share)
 626                         if not p2pool.DEBUG:
 627                             tracker.verified.add(share)
 628                         set_real_work2()
 629
 630                         try:
 631                             if pow_hash <= header['bits'].target or p2pool.DEBUG:
 632                                 for peer in p2p_node.peers.itervalues():
 633                                     peer.sendShares([share])
 634                                 shared_share_hashes.add(share.hash)
 635                         except:
 636                             log.err(None, 'Error forwarding block solution:')
 637
 638                     if pow_hash > target:
 639                         print 'Worker %s submitted share with hash > target:' % (request.getUser(),)
 640                         print '    Hash:   %56x' % (pow_hash,)
 641                         print '    Target: %56x' % (target,)
 642                     elif header_hash in received_header_hashes:
 643                         print >>sys.stderr, 'Worker %s @ %s submitted share more than once!' % (request.getUser(), request.getClientIP())
 644                     else:
 645                         received_header_hashes.add(header_hash)
 646
 647                         pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, request.getUser() if request.getPassword() == vip_pass else None)
 648                         self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
 649                         while len(self.recent_shares_ts_work) > 50:
 650                             self.recent_shares_ts_work.pop(0)
 651                         local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=request.getUser()))
 652
 653                     return on_time
 654
 655                 return ba, got_response
 656
 657         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)
 658
 659         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, pseudoshare_received)
 660         worker_interface.WorkerInterface(WorkerBridge()).attach_to(web_root)
 661
 662         deferral.retry('Error binding to worker port:', traceback=False)(reactor.listenTCP)(worker_endpoint[1], server.Site(web_root), interface=worker_endpoint[0])
 663
 664         with open(os.path.join(os.path.join(datadir_path, 'ready_flag')), 'wb') as f:
 665             pass
 666
 667         print '    ...success!'
 668         print
 669
 670
 671         @defer.inlineCallbacks
 672         def work_poller():
 673             while True:
 674                 flag = factory.new_block.get_deferred()
 675                 try:
 676                     yield set_real_work1()
 677                 except:
 678                     log.err()
 679                 yield defer.DeferredList([flag, deferral.sleep(15)], fireOnOneCallback=True)
 680         work_poller()
 681
 682
 683         # done!
 684         print 'Started successfully!'
 685         print
 686
 687
 688         if hasattr(signal, 'SIGALRM'):
 689             signal.signal(signal.SIGALRM, lambda signum, frame: reactor.callFromThread(
 690                 sys.stderr.write, 'Watchdog timer went off at:\n' + ''.join(traceback.format_stack())
 691             ))
 692             signal.siginterrupt(signal.SIGALRM, False)
 693             task.LoopingCall(signal.alarm, 30).start(1)
 694
 695         if args.irc_announce:
 696             from twisted.words.protocols import irc
 697             class IRCClient(irc.IRCClient):
 698                 nickname = 'p2pool%02i' % (random.randrange(100),)
 699                 channel = '#p2pool' if net.NAME == 'bitcoin' else '#p2pool-alt'
 700                 def lineReceived(self, line):
 701                     print repr(line)
 702                     irc.IRCClient.lineReceived(self, line)
 703                 def signedOn(self):
 704                     irc.IRCClient.signedOn(self)
 705                     self.factory.resetDelay()
 706                     self.join(self.channel)
 707                     self.watch_id = tracker.verified.added.watch(self._new_share)
 708                     self.announced_hashes = set()
 709                     self.delayed_messages = {}
 710                 def privmsg(self, user, channel, message):
 711                     if channel == self.channel and message in self.delayed_messages:
 712                         self.delayed_messages.pop(message).cancel()
 713                 def _new_share(self, share):
 714                     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:
 715                         self.announced_hashes.add(share.header_hash)
 716                         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)
 717                         self.delayed_messages[message] = reactor.callLater(random.expovariate(1/60), lambda: (self.say(self.channel, message), self.delayed_messages.pop(message)))
 718                 def connectionLost(self, reason):
 719                     tracker.verified.added.unwatch(self.watch_id)
 720                     print 'IRC connection lost:', reason.getErrorMessage()
 721             class IRCClientFactory(protocol.ReconnectingClientFactory):
 722                 protocol = IRCClient
 723             reactor.connectTCP("irc.freenode.net", 6667, IRCClientFactory())
 724
 725         @defer.inlineCallbacks
 726         def status_thread():
 727             last_str = None
 728             last_time = 0
 729             while True:
 730                 yield deferral.sleep(3)
 731                 try:
 732                     if time.time() > current_work2.value['last_update'] + 60:
 733                         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']),)
 734
 735                     height = tracker.get_height(current_work.value['best_share_hash'])
 736                     this_str = 'P2Pool: %i shares in chain (%i verified/%i total) Peers: %i (%i incoming)' % (
 737                         height,
 738                         len(tracker.verified.shares),
 739                         len(tracker.shares),
 740                         len(p2p_node.peers),
 741                         sum(1 for peer in p2p_node.peers.itervalues() if peer.incoming),
 742                     ) + (' FDs: %i R/%i W' % (len(reactor.getReaders()), len(reactor.getWriters())) if p2pool.DEBUG else '')
 743
 744                     datums, dt = local_rate_monitor.get_datums_in_last()
 745                     my_att_s = sum(datum['work']/dt for datum in datums)
 746                     this_str += '\n Local: %sH/s in last %s Local dead on arrival: %s Expected time to share: %s' % (
 747                         math.format(int(my_att_s)),
 748                         math.format_dt(dt),
 749                         math.format_binomial_conf(sum(1 for datum in datums if datum['dead']), len(datums), 0.95),
 750                         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 '???',
 751                     )
 752
 753                     if height > 2:
 754                         (stale_orphan_shares, stale_doa_shares), shares, _ = get_stale_counts()
 755                         stale_prop = p2pool_data.get_average_stale_prop(tracker, current_work.value['best_share_hash'], min(720, height))
 756                         real_att_s = p2pool_data.get_pool_attempts_per_second(tracker, current_work.value['best_share_hash'], min(height - 1, 720)) / (1 - stale_prop)
 757
 758                         this_str += '\n Shares: %i (%i orphan, %i dead) Stale rate: %s Efficiency: %s Current payout: %.4f %s' % (
 759                             shares, stale_orphan_shares, stale_doa_shares,
 760                             math.format_binomial_conf(stale_orphan_shares + stale_doa_shares, shares, 0.95),
 761                             math.format_binomial_conf(stale_orphan_shares + stale_doa_shares, shares, 0.95, lambda x: (1 - x)/(1 - stale_prop)),
 762                             get_current_txouts().get(bitcoin_data.pubkey_hash_to_script2(my_pubkey_hash), 0)*1e-8, net.PARENT.SYMBOL,
 763                         )
 764                         this_str += '\n Pool: %sH/s Stale rate: %.1f%% Expected time to block: %s' % (
 765                             math.format(int(real_att_s)),
 766                             100*stale_prop,
 767                             math.format_dt(2**256 / current_work.value['bits'].target / real_att_s),
 768                         )
 769
 770                     if this_str != last_str or time.time() > last_time + 15:
 771                         print this_str
 772                         last_str = this_str
 773                         last_time = time.time()
 774                 except:
 775                     log.err()
 776         status_thread()
 777     except:
 778         log.err(None, 'Fatal error:')
 779         reactor.stop()
 780
 781 def run():
 782     class FixedArgumentParser(argparse.ArgumentParser):
 783         def _read_args_from_files(self, arg_strings):
 784             # expand arguments referencing files
 785             new_arg_strings = []
 786             for arg_string in arg_strings:
 787
 788                 # for regular arguments, just add them back into the list
 789                 if not arg_string or arg_string[0] not in self.fromfile_prefix_chars:
 790                     new_arg_strings.append(arg_string)
 791
 792                 # replace arguments referencing files with the file content
 793                 else:
 794                     try:
 795                         args_file = open(arg_string[1:])
 796                         try:
 797                             arg_strings = []
 798                             for arg_line in args_file.read().splitlines():
 799                                 for arg in self.convert_arg_line_to_args(arg_line):
 800                                     arg_strings.append(arg)
 801                             arg_strings = self._read_args_from_files(arg_strings)
 802                             new_arg_strings.extend(arg_strings)
 803                         finally:
 804                             args_file.close()
 805                     except IOError:
 806                         err = sys.exc_info()[1]
 807                         self.error(str(err))
 808
 809             # return the modified argument list
 810             return new_arg_strings
 811
 812         def convert_arg_line_to_args(self, arg_line):
 813             return [arg for arg in arg_line.split() if arg.strip()]
 814
 815
 816     realnets=dict((name, net) for name, net in networks.nets.iteritems() if '_testnet' not in name)
 817
 818     parser = FixedArgumentParser(description='p2pool (version %s)' % (p2pool.__version__,), fromfile_prefix_chars='@')
 819     parser.add_argument('--version', action='version', version=p2pool.__version__)
 820     parser.add_argument('--net',
 821         help='use specified network (default: bitcoin)',
 822         action='store', choices=sorted(realnets), default='bitcoin', dest='net_name')
 823     parser.add_argument('--testnet',
 824         help='''use the network's testnet''',
 825         action='store_const', const=True, default=False, dest='testnet')
 826     parser.add_argument('--debug',
 827         help='enable debugging mode',
 828         action='store_const', const=True, default=False, dest='debug')
 829     parser.add_argument('-a', '--address',
 830         help='generate payouts to this address (default: <address requested from bitcoind>)',
 831         type=str, action='store', default=None, dest='address')
 832     parser.add_argument('--datadir',
 833         help='store data in this directory (default: <directory run_p2pool.py is in>/data)',
 834         type=str, action='store', default=None, dest='datadir')
 835     parser.add_argument('--logfile',
 836         help='''log to this file (default: data/<NET>/log)''',
 837         type=str, action='store', default=None, dest='logfile')
 838     parser.add_argument('--merged',
 839         help='call getauxblock on this url to get work for merged mining (example: http://ncuser:ncpass@127.0.0.1:10332/)',
 840         type=str, action='append', default=[], dest='merged_urls')
 841     parser.add_argument('--give-author', metavar='DONATION_PERCENTAGE',
 842         help='donate this percentage of work to author of p2pool (default: 0.5)',
 843         type=float, action='store', default=0.5, dest='donation_percentage')
 844     parser.add_argument('--irc-announce',
 845         help='announce any blocks found on irc://irc.freenode.net/#p2pool',
 846         action='store_true', default=False, dest='irc_announce')
 847
 848     p2pool_group = parser.add_argument_group('p2pool interface')
 849     p2pool_group.add_argument('--p2pool-port', metavar='PORT',
 850         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())),
 851         type=int, action='store', default=None, dest='p2pool_port')
 852     p2pool_group.add_argument('-n', '--p2pool-node', metavar='ADDR[:PORT]',
 853         help='connect to existing p2pool node at ADDR listening on port PORT (defaults to default p2pool P2P port) in addition to builtin addresses',
 854         type=str, action='append', default=[], dest='p2pool_nodes')
 855     parser.add_argument('--disable-upnp',
 856         help='''don't attempt to use UPnP to forward p2pool's P2P port from the Internet to this computer''',
 857         action='store_false', default=True, dest='upnp')
 858     p2pool_group.add_argument('--max-conns', metavar='CONNS',
 859         help='maximum incoming connections (default: 40)',
 860         type=int, action='store', default=40, dest='p2pool_conns')
 861
 862     worker_group = parser.add_argument_group('worker interface')
 863     worker_group.add_argument('-w', '--worker-port', metavar='PORT or ADDR:PORT',
 864         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())),
 865         type=str, action='store', default=None, dest='worker_endpoint')
 866     worker_group.add_argument('-f', '--fee', metavar='FEE_PERCENTAGE',
 867         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)''',
 868         type=float, action='store', default=0, dest='worker_fee')
 869
 870     bitcoind_group = parser.add_argument_group('bitcoind interface')
 871     bitcoind_group.add_argument('--bitcoind-address', metavar='BITCOIND_ADDRESS',
 872         help='connect to this address (default: 127.0.0.1)',
 873         type=str, action='store', default='127.0.0.1', dest='bitcoind_address')
 874     bitcoind_group.add_argument('--bitcoind-rpc-port', metavar='BITCOIND_RPC_PORT',
 875         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())),
 876         type=int, action='store', default=None, dest='bitcoind_rpc_port')
 877     bitcoind_group.add_argument('--bitcoind-p2p-port', metavar='BITCOIND_P2P_PORT',
 878         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())),
 879         type=int, action='store', default=None, dest='bitcoind_p2p_port')
 880
 881     bitcoind_group.add_argument(metavar='BITCOIND_RPCUSERPASS',
 882         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)',
 883         type=str, action='store', default=[], nargs='*', dest='bitcoind_rpc_userpass')
 884
 885     args = parser.parse_args()
 886
 887     if args.debug:
 888         p2pool.DEBUG = True
 889
 890     net_name = args.net_name + ('_testnet' if args.testnet else '')
 891     net = networks.nets[net_name]
 892
 893     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)
 894     if not os.path.exists(datadir_path):
 895         os.makedirs(datadir_path)
 896
 897     if len(args.bitcoind_rpc_userpass) > 2:
 898         parser.error('a maximum of two arguments are allowed')
 899     args.bitcoind_rpc_username, args.bitcoind_rpc_password = ([None, None] + args.bitcoind_rpc_userpass)[-2:]
 900
 901     if args.bitcoind_rpc_password is None:
 902         if not hasattr(net.PARENT, 'CONF_FILE_FUNC'):
 903             parser.error('This network has no configuration file function. Manually enter your RPC password.')
 904         conf_path = net.PARENT.CONF_FILE_FUNC()
 905         if not os.path.exists(conf_path):
 906             parser.error('''Bitcoin configuration file not found. Manually enter your RPC password.\r\n'''
 907                 '''If you actually haven't created a configuration file, you should create one at %s with the text:\r\n'''
 908                 '''\r\n'''
 909                 '''server=1\r\n'''
 910                 '''rpcpassword=%x''' % (conf_path, random.randrange(2**128)))
 911         with open(conf_path, 'rb') as f:
 912             cp = ConfigParser.RawConfigParser()
 913             cp.readfp(StringIO.StringIO('[x]\r\n' + f.read()))
 914             for conf_name, var_name, var_type in [
 915                 ('rpcuser', 'bitcoind_rpc_username', str),
 916                 ('rpcpassword', 'bitcoind_rpc_password', str),
 917                 ('rpcport', 'bitcoind_rpc_port', int),
 918                 ('port', 'bitcoind_p2p_port', int),
 919             ]:
 920                 if getattr(args, var_name) is None and cp.has_option('x', conf_name):
 921                     setattr(args, var_name, var_type(cp.get('x', conf_name)))
 922         if args.bitcoind_rpc_password is None:
 923             parser.error('''Bitcoin configuration file didn't contain an rpcpassword= line! Add one!''')
 924
 925     if args.bitcoind_rpc_username is None:
 926         args.bitcoind_rpc_username = ''
 927
 928     if args.bitcoind_rpc_port is None:
 929         args.bitcoind_rpc_port = net.PARENT.RPC_PORT
 930
 931     if args.bitcoind_p2p_port is None:
 932         args.bitcoind_p2p_port = net.PARENT.P2P_PORT
 933
 934     if args.p2pool_port is None:
 935         args.p2pool_port = net.P2P_PORT
 936
 937     if args.worker_endpoint is None:
 938         worker_endpoint = '', net.WORKER_PORT
 939     elif ':' not in args.worker_endpoint:
 940         worker_endpoint = '', int(args.worker_endpoint)
 941     else:
 942         addr, port = args.worker_endpoint.rsplit(':', 1)
 943         worker_endpoint = addr, int(port)
 944
 945     if args.address is not None:
 946         try:
 947             args.pubkey_hash = bitcoin_data.address_to_pubkey_hash(args.address, net.PARENT)
 948         except Exception, e:
 949             parser.error('error parsing address: ' + repr(e))
 950     else:
 951         args.pubkey_hash = None
 952
 953     def separate_url(url):
 954         s = urlparse.urlsplit(url)
 955         if '@' not in s.netloc:
 956             parser.error('merged url netloc must contain an "@"')
 957         userpass, new_netloc = s.netloc.rsplit('@', 1)
 958         return urlparse.urlunsplit(s._replace(netloc=new_netloc)), userpass
 959     merged_urls = map(separate_url, args.merged_urls)
 960
 961     if args.logfile is None:
 962         args.logfile = os.path.join(datadir_path, 'log')
 963
 964     logfile = logging.LogFile(args.logfile)
 965     pipe = logging.TimestampingPipe(logging.TeePipe([logging.EncodeReplacerPipe(sys.stderr), logfile]))
 966     sys.stdout = logging.AbortPipe(pipe)
 967     sys.stderr = log.DefaultObserver.stderr = logging.AbortPipe(logging.PrefixPipe(pipe, '> '))
 968     if hasattr(signal, "SIGUSR1"):
 969         def sigusr1(signum, frame):
 970             print 'Caught SIGUSR1, closing %r...' % (args.logfile,)
 971             logfile.reopen()
 972             print '...and reopened %r after catching SIGUSR1.' % (args.logfile,)
 973         signal.signal(signal.SIGUSR1, sigusr1)
 974     task.LoopingCall(logfile.reopen).start(5)
 975
 976     reactor.callWhenRunning(main, args, net, datadir_path, merged_urls, worker_endpoint)
 977     reactor.run()