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((lambda x: x['blockcount'] if 'blockcount' in x else x['height'])((yield bitcoind.rpc_getblock('%x' % (block_hash,)))))))
 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
 300         submit_block = deferral.retry('Error submitting primary block: (will retry)', 10, 10)(lambda block: bitcoind.rpc_getmemorypool(bitcoin_data.block_type.pack(block).encode('hex')))
 301
 302         @tracker.verified.added.watch
 303         def _(share):
 304             if share.pow_hash <= share.header['bits'].target:
 305                 submit_block(share.as_block(tracker))
 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         pseudoshare_received = variable.Event()
 441         local_rate_monitor = math.RateMonitor(10*60)
 442
 443         class WorkerBridge(worker_interface.WorkerBridge):
 444             def __init__(self):
 445                 worker_interface.WorkerBridge.__init__(self)
 446                 self.new_work_event = current_work.changed
 447                 self.recent_shares_ts_work = []
 448
 449             def preprocess_request(self, request):
 450                 user = request.getUser() if request.getUser() is not None else ''
 451
 452                 desired_share_target = 2**256 - 1
 453                 if '/' in user:
 454                     user, min_diff_str = user.rsplit('/', 1)
 455                     try:
 456                         desired_share_target = bitcoin_data.difficulty_to_target(float(min_diff_str))
 457                     except:
 458                         pass
 459
 460                 if random.uniform(0, 100) < args.worker_fee:
 461                     pubkey_hash = my_pubkey_hash
 462                 else:
 463                     try:
 464                         pubkey_hash = bitcoin_data.address_to_pubkey_hash(user, net.PARENT)
 465                     except: # XXX blah
 466                         pubkey_hash = my_pubkey_hash
 467
 468                 return pubkey_hash, desired_share_target
 469
 470             def get_work(self, pubkey_hash, desired_share_target):
 471                 if len(p2p_node.peers) == 0 and net.PERSIST:
 472                     raise jsonrpc.Error(-12345, u'p2pool is not connected to any peers')
 473                 if current_work.value['best_share_hash'] is None and net.PERSIST:
 474                     raise jsonrpc.Error(-12345, u'p2pool is downloading shares')
 475                 if time.time() > current_work2.value['last_update'] + 60:
 476                     raise jsonrpc.Error(-12345, u'lost contact with bitcoind')
 477
 478                 if current_work.value['mm_chains']:
 479                     tree, size = bitcoin_data.make_auxpow_tree(current_work.value['mm_chains'])
 480                     mm_hashes = [current_work.value['mm_chains'].get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
 481                     mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
 482                         merkle_root=bitcoin_data.merkle_hash(mm_hashes),
 483                         size=size,
 484                         nonce=0,
 485                     ))
 486                     mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in current_work.value['mm_chains'].iteritems()]
 487                 else:
 488                     mm_data = ''
 489                     mm_later = []
 490
 491                 new = (tracker.shares[current_work.value['best_share_hash']].timestamp if current_work.value['best_share_hash'] is not None else time.time()) > net.SWITCH_TIME
 492
 493                 if new:
 494                     share_info, generate_tx = p2pool_data.new_generate_transaction(
 495                         tracker=tracker,
 496                         share_data=dict(
 497                             previous_share_hash=current_work.value['best_share_hash'],
 498                             coinbase=(mm_data + current_work.value['coinbaseflags'])[:100],
 499                             nonce=random.randrange(2**32),
 500                             pubkey_hash=pubkey_hash,
 501                             subsidy=current_work2.value['subsidy'],
 502                             donation=math.perfect_round(65535*args.donation_percentage/100),
 503                             stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
 504                                 253 if orphans > orphans_recorded_in_chain else
 505                                 254 if doas > doas_recorded_in_chain else
 506                                 0
 507                             )(*get_stale_counts()),
 508                         ),
 509                         block_target=current_work.value['bits'].target,
 510                         desired_timestamp=int(time.time() - current_work2.value['clock_offset']),
 511                         desired_target=desired_share_target,
 512                         net=net,
 513                     )
 514                 else:
 515                     share_info, generate_tx = p2pool_data.generate_transaction(
 516                         tracker=tracker,
 517                         share_data=dict(
 518                             previous_share_hash=current_work.value['best_share_hash'],
 519                             coinbase=(mm_data + current_work.value['coinbaseflags'])[:100],
 520                             nonce=struct.pack('<Q', random.randrange(2**64)),
 521                             new_script=bitcoin_data.pubkey_hash_to_script2(pubkey_hash),
 522                             subsidy=current_work2.value['subsidy'],
 523                             donation=math.perfect_round(65535*args.donation_percentage/100),
 524                             stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
 525                                 253 if orphans > orphans_recorded_in_chain else
 526                                 254 if doas > doas_recorded_in_chain else
 527                                 0
 528                             )(*get_stale_counts()),
 529                         ),
 530                         block_target=current_work.value['bits'].target,
 531                         desired_timestamp=int(time.time() - current_work2.value['clock_offset']),
 532                         net=net,
 533                     )
 534
 535                 target = net.PARENT.SANE_MAX_TARGET
 536                 if len(self.recent_shares_ts_work) == 50:
 537                     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])
 538                     target = min(target, 2**256//(hash_rate))
 539                 target = max(target, share_info['bits'].target)
 540                 for aux_work in current_work.value['mm_chains'].itervalues():
 541                     target = max(target, aux_work['target'])
 542
 543                 transactions = [generate_tx] + list(current_work2.value['transactions'])
 544                 packed_generate_tx = bitcoin_data.tx_type.pack(generate_tx)
 545                 merkle_root = bitcoin_data.check_merkle_branch(bitcoin_data.hash256(packed_generate_tx), 0, current_work2.value['merkle_branch'])
 546
 547                 getwork_time = time.time()
 548                 merkle_branch = current_work2.value['merkle_branch']
 549
 550                 print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
 551                     bitcoin_data.target_to_difficulty(target),
 552                     bitcoin_data.target_to_difficulty(share_info['bits'].target),
 553                     current_work2.value['subsidy']*1e-8, net.PARENT.SYMBOL,
 554                     len(current_work2.value['transactions']),
 555                 )
 556
 557                 ba = bitcoin_getwork.BlockAttempt(
 558                     version=current_work.value['version'],
 559                     previous_block=current_work.value['previous_block'],
 560                     merkle_root=merkle_root,
 561                     timestamp=current_work2.value['time'],
 562                     bits=current_work.value['bits'],
 563                     share_target=target,
 564                 )
 565
 566                 received_header_hashes = set()
 567
 568                 def got_response(header, request):
 569                     assert header['merkle_root'] == merkle_root
 570
 571                     header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
 572                     pow_hash = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
 573                     on_time = current_work.value['best_share_hash'] == share_info['share_data']['previous_share_hash']
 574
 575                     try:
 576                         if pow_hash <= header['bits'].target or p2pool.DEBUG:
 577                             submit_block(dict(header=header, txs=transactions))
 578                             if pow_hash <= header['bits'].target:
 579                                 print
 580                                 print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
 581                                 print
 582                                 recent_blocks.append(dict(ts=time.time(), hash='%064x' % (header_hash,)))
 583                     except:
 584                         log.err(None, 'Error while processing potential block:')
 585
 586                     for aux_work, index, hashes in mm_later:
 587                         try:
 588                             if pow_hash <= aux_work['target'] or p2pool.DEBUG:
 589                                 df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
 590                                     pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
 591                                     bitcoin_data.aux_pow_type.pack(dict(
 592                                         merkle_tx=dict(
 593                                             tx=transactions[0],
 594                                             block_hash=header_hash,
 595                                             merkle_branch=merkle_branch,
 596                                             index=0,
 597                                         ),
 598                                         merkle_branch=bitcoin_data.calculate_merkle_branch(hashes, index),
 599                                         index=index,
 600                                         parent_block_header=header,
 601                                     )).encode('hex'),
 602                                 )
 603                                 @df.addCallback
 604                                 def _(result):
 605                                     if result != (pow_hash <= aux_work['target']):
 606                                         print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
 607                                     else:
 608                                         print 'Merged block submittal result: %s' % (result,)
 609                                 @df.addErrback
 610                                 def _(err):
 611                                     log.err(err, 'Error submitting merged block:')
 612                         except:
 613                             log.err(None, 'Error while processing merged mining POW:')
 614
 615                     if pow_hash <= share_info['bits'].target:
 616                         if new:
 617                             min_header = dict(header);del min_header['merkle_root']
 618                             hash_link = p2pool_data.prefix_to_hash_link(packed_generate_tx[:-32-4], p2pool_data.gentx_before_refhash)
 619                             share = p2pool_data.NewShare(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)
 620                         else:
 621                             share = p2pool_data.Share(net, None, header, share_info, merkle_branch=merkle_branch, other_txs=transactions[1:] if pow_hash <= header['bits'].target else None)
 622                         print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
 623                             request.getUser(),
 624                             p2pool_data.format_hash(share.hash),
 625                             p2pool_data.format_hash(share.previous_hash),
 626                             time.time() - getwork_time,
 627                             ' DEAD ON ARRIVAL' if not on_time else '',
 628                         )
 629                         my_share_hashes.add(share.hash)
 630                         if not on_time:
 631                             my_doa_share_hashes.add(share.hash)
 632
 633                         tracker.add(share)
 634                         if not p2pool.DEBUG:
 635                             tracker.verified.add(share)
 636                         set_real_work2()
 637
 638                         try:
 639                             if pow_hash <= header['bits'].target or p2pool.DEBUG:
 640                                 for peer in p2p_node.peers.itervalues():
 641                                     peer.sendShares([share])
 642                                 shared_share_hashes.add(share.hash)
 643                         except:
 644                             log.err(None, 'Error forwarding block solution:')
 645
 646                     if pow_hash <= target and header_hash not in received_header_hashes:
 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                     if header_hash in received_header_hashes:
 654                         print >>sys.stderr, 'Worker %s @ %s submitted share more than once!' % (request.getUser(), request.getClientIP())
 655                     received_header_hashes.add(header_hash)
 656
 657                     if pow_hash > target:
 658                         print 'Worker %s submitted share with hash > target:' % (request.getUser(),)
 659                         print '    Hash:   %56x' % (pow_hash,)
 660                         print '    Target: %56x' % (target,)
 661
 662                     return on_time
 663
 664                 return ba, got_response
 665
 666         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)
 667
 668         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)
 669         worker_interface.WorkerInterface(WorkerBridge()).attach_to(web_root)
 670
 671         deferral.retry('Error binding to worker port:', traceback=False)(reactor.listenTCP)(worker_endpoint[1], server.Site(web_root), interface=worker_endpoint[0])
 672
 673         with open(os.path.join(os.path.join(datadir_path, 'ready_flag')), 'wb') as f:
 674             pass
 675
 676         print '    ...success!'
 677         print
 678
 679
 680         @defer.inlineCallbacks
 681         def work_poller():
 682             while True:
 683                 flag = factory.new_block.get_deferred()
 684                 try:
 685                     yield set_real_work1()
 686                 except:
 687                     log.err()
 688                 yield defer.DeferredList([flag, deferral.sleep(15)], fireOnOneCallback=True)
 689         work_poller()
 690
 691
 692         # done!
 693         print 'Started successfully!'
 694         print
 695
 696
 697         if hasattr(signal, 'SIGALRM'):
 698             signal.signal(signal.SIGALRM, lambda signum, frame: reactor.callFromThread(
 699                 sys.stderr.write, 'Watchdog timer went off at:\n' + ''.join(traceback.format_stack())
 700             ))
 701             signal.siginterrupt(signal.SIGALRM, False)
 702             task.LoopingCall(signal.alarm, 30).start(1)
 703
 704         if args.irc_announce:
 705             from twisted.words.protocols import irc
 706             class IRCClient(irc.IRCClient):
 707                 nickname = 'p2pool%02i' % (random.randrange(100),)
 708                 channel = '#p2pool' if net.NAME == 'bitcoin' else '#p2pool-alt'
 709                 def lineReceived(self, line):
 710                     print repr(line)
 711                     irc.IRCClient.lineReceived(self, line)
 712                 def signedOn(self):
 713                     irc.IRCClient.signedOn(self)
 714                     self.factory.resetDelay()
 715                     self.join(self.channel)
 716                     self.watch_id = tracker.verified.added.watch(self._new_share)
 717                     self.announced_hashes = set()
 718                     self.delayed_messages = {}
 719                 def privmsg(self, user, channel, message):
 720                     if channel == self.channel and message in self.delayed_messages:
 721                         self.delayed_messages.pop(message).cancel()
 722                 def _new_share(self, share):
 723                     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:
 724                         self.announced_hashes.add(share.header_hash)
 725                         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)
 726                         self.delayed_messages[message] = reactor.callLater(random.expovariate(1/5), lambda: (self.say(self.channel, message), self.delayed_messages.pop(message)))
 727                 def connectionLost(self, reason):
 728                     tracker.verified.added.unwatch(self.watch_id)
 729                     print 'IRC connection lost:', reason.getErrorMessage()
 730             class IRCClientFactory(protocol.ReconnectingClientFactory):
 731                 protocol = IRCClient
 732             reactor.connectTCP("irc.freenode.net", 6667, IRCClientFactory())
 733
 734         @defer.inlineCallbacks
 735         def status_thread():
 736             last_str = None
 737             last_time = 0
 738             while True:
 739                 yield deferral.sleep(3)
 740                 try:
 741                     if time.time() > current_work2.value['last_update'] + 60:
 742                         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']),)
 743
 744                     height = tracker.get_height(current_work.value['best_share_hash'])
 745                     this_str = 'P2Pool: %i shares in chain (%i verified/%i total) Peers: %i (%i incoming)' % (
 746                         height,
 747                         len(tracker.verified.shares),
 748                         len(tracker.shares),
 749                         len(p2p_node.peers),
 750                         sum(1 for peer in p2p_node.peers.itervalues() if peer.incoming),
 751                     ) + (' FDs: %i R/%i W' % (len(reactor.getReaders()), len(reactor.getWriters())) if p2pool.DEBUG else '')
 752
 753                     datums, dt = local_rate_monitor.get_datums_in_last()
 754                     my_att_s = sum(datum['work']/dt for datum in datums)
 755                     this_str += '\n Local: %sH/s in last %s Local dead on arrival: %s Expected time to share: %s' % (
 756                         math.format(int(my_att_s)),
 757                         math.format_dt(dt),
 758                         math.format_binomial_conf(sum(1 for datum in datums if datum['dead']), len(datums), 0.95),
 759                         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 '???',
 760                     )
 761
 762                     if height > 2:
 763                         (stale_orphan_shares, stale_doa_shares), shares, _ = get_stale_counts()
 764                         stale_prop = p2pool_data.get_average_stale_prop(tracker, current_work.value['best_share_hash'], min(720, height))
 765                         real_att_s = p2pool_data.get_pool_attempts_per_second(tracker, current_work.value['best_share_hash'], min(height - 1, 720)) / (1 - stale_prop)
 766
 767                         this_str += '\n Shares: %i (%i orphan, %i dead) Stale rate: %s Efficiency: %s Current payout: %.4f %s' % (
 768                             shares, stale_orphan_shares, stale_doa_shares,
 769                             math.format_binomial_conf(stale_orphan_shares + stale_doa_shares, shares, 0.95),
 770                             math.format_binomial_conf(stale_orphan_shares + stale_doa_shares, shares, 0.95, lambda x: (1 - x)/(1 - stale_prop)),
 771                             get_current_txouts().get(bitcoin_data.pubkey_hash_to_script2(my_pubkey_hash), 0)*1e-8, net.PARENT.SYMBOL,
 772                         )
 773                         this_str += '\n Pool: %sH/s Stale rate: %.1f%% Expected time to block: %s' % (
 774                             math.format(int(real_att_s)),
 775                             100*stale_prop,
 776                             math.format_dt(2**256 / current_work.value['bits'].target / real_att_s),
 777                         )
 778
 779                     if this_str != last_str or time.time() > last_time + 15:
 780                         print this_str
 781                         last_str = this_str
 782                         last_time = time.time()
 783                 except:
 784                     log.err()
 785         status_thread()
 786     except:
 787         log.err(None, 'Fatal error:')
 788         reactor.stop()
 789
 790 def run():
 791     class FixedArgumentParser(argparse.ArgumentParser):
 792         def _read_args_from_files(self, arg_strings):
 793             # expand arguments referencing files
 794             new_arg_strings = []
 795             for arg_string in arg_strings:
 796
 797                 # for regular arguments, just add them back into the list
 798                 if not arg_string or arg_string[0] not in self.fromfile_prefix_chars:
 799                     new_arg_strings.append(arg_string)
 800
 801                 # replace arguments referencing files with the file content
 802                 else:
 803                     try:
 804                         args_file = open(arg_string[1:])
 805                         try:
 806                             arg_strings = []
 807                             for arg_line in args_file.read().splitlines():
 808                                 for arg in self.convert_arg_line_to_args(arg_line):
 809                                     arg_strings.append(arg)
 810                             arg_strings = self._read_args_from_files(arg_strings)
 811                             new_arg_strings.extend(arg_strings)
 812                         finally:
 813                             args_file.close()
 814                     except IOError:
 815                         err = sys.exc_info()[1]
 816                         self.error(str(err))
 817
 818             # return the modified argument list
 819             return new_arg_strings
 820
 821         def convert_arg_line_to_args(self, arg_line):
 822             return [arg for arg in arg_line.split() if arg.strip()]
 823
 824
 825     realnets=dict((name, net) for name, net in networks.nets.iteritems() if '_testnet' not in name)
 826
 827     parser = FixedArgumentParser(description='p2pool (version %s)' % (p2pool.__version__,), fromfile_prefix_chars='@')
 828     parser.add_argument('--version', action='version', version=p2pool.__version__)
 829     parser.add_argument('--net',
 830         help='use specified network (default: bitcoin)',
 831         action='store', choices=sorted(realnets), default='bitcoin', dest='net_name')
 832     parser.add_argument('--testnet',
 833         help='''use the network's testnet''',
 834         action='store_const', const=True, default=False, dest='testnet')
 835     parser.add_argument('--debug',
 836         help='enable debugging mode',
 837         action='store_const', const=True, default=False, dest='debug')
 838     parser.add_argument('-a', '--address',
 839         help='generate payouts to this address (default: <address requested from bitcoind>)',
 840         type=str, action='store', default=None, dest='address')
 841     parser.add_argument('--datadir',
 842         help='store data in this directory (default: <directory run_p2pool.py is in>/data)',
 843         type=str, action='store', default=None, dest='datadir')
 844     parser.add_argument('--logfile',
 845         help='''log to this file (default: data/<NET>/log)''',
 846         type=str, action='store', default=None, dest='logfile')
 847     parser.add_argument('--merged',
 848         help='call getauxblock on this url to get work for merged mining (example: http://ncuser:ncpass@127.0.0.1:10332/)',
 849         type=str, action='append', default=[], dest='merged_urls')
 850     parser.add_argument('--give-author', metavar='DONATION_PERCENTAGE',
 851         help='donate this percentage of work to author of p2pool (default: 0.5)',
 852         type=float, action='store', default=0.5, dest='donation_percentage')
 853     parser.add_argument('--irc-announce',
 854         help='announce any blocks found on irc://irc.freenode.net/#p2pool',
 855         action='store_true', default=False, dest='irc_announce')
 856
 857     p2pool_group = parser.add_argument_group('p2pool interface')
 858     p2pool_group.add_argument('--p2pool-port', metavar='PORT',
 859         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())),
 860         type=int, action='store', default=None, dest='p2pool_port')
 861     p2pool_group.add_argument('-n', '--p2pool-node', metavar='ADDR[:PORT]',
 862         help='connect to existing p2pool node at ADDR listening on port PORT (defaults to default p2pool P2P port) in addition to builtin addresses',
 863         type=str, action='append', default=[], dest='p2pool_nodes')
 864     parser.add_argument('--disable-upnp',
 865         help='''don't attempt to use UPnP to forward p2pool's P2P port from the Internet to this computer''',
 866         action='store_false', default=True, dest='upnp')
 867
 868     worker_group = parser.add_argument_group('worker interface')
 869     worker_group.add_argument('-w', '--worker-port', metavar='PORT or ADDR:PORT',
 870         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())),
 871         type=str, action='store', default=None, dest='worker_endpoint')
 872     worker_group.add_argument('-f', '--fee', metavar='FEE_PERCENTAGE',
 873         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)''',
 874         type=float, action='store', default=0, dest='worker_fee')
 875
 876     bitcoind_group = parser.add_argument_group('bitcoind interface')
 877     bitcoind_group.add_argument('--bitcoind-address', metavar='BITCOIND_ADDRESS',
 878         help='connect to this address (default: 127.0.0.1)',
 879         type=str, action='store', default='127.0.0.1', dest='bitcoind_address')
 880     bitcoind_group.add_argument('--bitcoind-rpc-port', metavar='BITCOIND_RPC_PORT',
 881         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())),
 882         type=int, action='store', default=None, dest='bitcoind_rpc_port')
 883     bitcoind_group.add_argument('--bitcoind-p2p-port', metavar='BITCOIND_P2P_PORT',
 884         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())),
 885         type=int, action='store', default=None, dest='bitcoind_p2p_port')
 886
 887     bitcoind_group.add_argument(metavar='BITCOIND_RPCUSERPASS',
 888         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)',
 889         type=str, action='store', default=[], nargs='*', dest='bitcoind_rpc_userpass')
 890
 891     args = parser.parse_args()
 892
 893     if args.debug:
 894         p2pool.DEBUG = True
 895
 896     net_name = args.net_name + ('_testnet' if args.testnet else '')
 897     net = networks.nets[net_name]
 898
 899     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)
 900     if not os.path.exists(datadir_path):
 901         os.makedirs(datadir_path)
 902
 903     if len(args.bitcoind_rpc_userpass) > 2:
 904         parser.error('a maximum of two arguments are allowed')
 905     args.bitcoind_rpc_username, args.bitcoind_rpc_password = ([None, None] + args.bitcoind_rpc_userpass)[-2:]
 906
 907     if args.bitcoind_rpc_password is None:
 908         if not hasattr(net.PARENT, 'CONF_FILE_FUNC'):
 909             parser.error('This network has no configuration file function. Manually enter your RPC password.')
 910         conf_path = net.PARENT.CONF_FILE_FUNC()
 911         if not os.path.exists(conf_path):
 912             parser.error('''Bitcoin configuration file not found. Manually enter your RPC password.\r\n'''
 913                 '''If you actually haven't created a configuration file, you should create one at %s with the text:\r\n'''
 914                 '''\r\n'''
 915                 '''server=1\r\n'''
 916                 '''rpcpassword=%x''' % (conf_path, random.randrange(2**128)))
 917         with open(conf_path, 'rb') as f:
 918             cp = ConfigParser.RawConfigParser()
 919             cp.readfp(StringIO.StringIO('[x]\r\n' + f.read()))
 920             for conf_name, var_name, var_type in [
 921                 ('rpcuser', 'bitcoind_rpc_username', str),
 922                 ('rpcpassword', 'bitcoind_rpc_password', str),
 923                 ('rpcport', 'bitcoind_rpc_port', int),
 924                 ('port', 'bitcoind_p2p_port', int),
 925             ]:
 926                 if getattr(args, var_name) is None and cp.has_option('x', conf_name):
 927                     setattr(args, var_name, var_type(cp.get('x', conf_name)))
 928         if args.bitcoind_rpc_password is None:
 929             parser.error('''Bitcoin configuration file didn't contain an rpcpassword= line! Add one!''')
 930
 931     if args.bitcoind_rpc_username is None:
 932         args.bitcoind_rpc_username = ''
 933
 934     if args.bitcoind_rpc_port is None:
 935         args.bitcoind_rpc_port = net.PARENT.RPC_PORT
 936
 937     if args.bitcoind_p2p_port is None:
 938         args.bitcoind_p2p_port = net.PARENT.P2P_PORT
 939
 940     if args.p2pool_port is None:
 941         args.p2pool_port = net.P2P_PORT
 942
 943     if args.worker_endpoint is None:
 944         worker_endpoint = '', net.WORKER_PORT
 945     elif ':' not in args.worker_endpoint:
 946         worker_endpoint = '', int(args.worker_endpoint)
 947     else:
 948         addr, port = args.worker_endpoint.rsplit(':', 1)
 949         worker_endpoint = addr, int(port)
 950
 951     if args.address is not None:
 952         try:
 953             args.pubkey_hash = bitcoin_data.address_to_pubkey_hash(args.address, net.PARENT)
 954         except Exception, e:
 955             parser.error('error parsing address: ' + repr(e))
 956     else:
 957         args.pubkey_hash = None
 958
 959     def separate_url(url):
 960         s = urlparse.urlsplit(url)
 961         if '@' not in s.netloc:
 962             parser.error('merged url netloc must contain an "@"')
 963         userpass, new_netloc = s.netloc.rsplit('@', 1)
 964         return urlparse.urlunsplit(s._replace(netloc=new_netloc)), userpass
 965     merged_urls = map(separate_url, args.merged_urls)
 966
 967     if args.logfile is None:
 968         args.logfile = os.path.join(datadir_path, 'log')
 969
 970     logfile = logging.LogFile(args.logfile)
 971     pipe = logging.TimestampingPipe(logging.TeePipe([logging.EncodeReplacerPipe(sys.stderr), logfile]))
 972     sys.stdout = logging.AbortPipe(pipe)
 973     sys.stderr = log.DefaultObserver.stderr = logging.AbortPipe(logging.PrefixPipe(pipe, '> '))
 974     if hasattr(signal, "SIGUSR1"):
 975         def sigusr1(signum, frame):
 976             print 'Caught SIGUSR1, closing %r...' % (args.logfile,)
 977             logfile.reopen()
 978             print '...and reopened %r after catching SIGUSR1.' % (args.logfile,)
 979         signal.signal(signal.SIGUSR1, sigusr1)
 980     task.LoopingCall(logfile.reopen).start(5)
 981
 982     reactor.callWhenRunning(main, args, net, datadir_path, merged_urls, worker_endpoint)
 983     reactor.run()