p2pool/p2p.py

   1 from __future__ import division
   2
   3 import random
   4 import sys
   5 import time
   6
   7 from twisted.internet import defer, error, protocol, reactor
   8 from twisted.python import log
   9
  10 import p2pool
  11 from p2pool import data as p2pool_data
  12 from p2pool.bitcoin import p2p as bitcoin_p2p
  13 from p2pool.bitcoin import data as bitcoin_data
  14 from p2pool.util import deferral, pack
  15
  16 class Protocol(bitcoin_p2p.BaseProtocol):
  17     version = 2
  18     sub_version = p2pool.__version__
  19
  20     def __init__(self, node, incoming):
  21         self.node = node
  22         self.incoming = incoming
  23
  24         self._prefix = self.node.net.PREFIX
  25
  26     max_payload_length = 1000000
  27     use_checksum = True
  28
  29     other_version = None
  30     connected2 = False
  31
  32     def connectionMade(self):
  33         bitcoin_p2p.BaseProtocol.connectionMade(self)
  34
  35         self.factory.proto_made_connection(self)
  36
  37         self.addr = self.transport.getPeer().host, self.transport.getPeer().port
  38
  39         self.send_version(
  40             version=self.version,
  41             services=0,
  42             addr_to=dict(
  43                 services=0,
  44                 address=self.transport.getPeer().host,
  45                 port=self.transport.getPeer().port,
  46             ),
  47             addr_from=dict(
  48                 services=0,
  49                 address=self.transport.getHost().host,
  50                 port=self.transport.getHost().port,
  51             ),
  52             nonce=self.node.nonce,
  53             sub_version=self.sub_version,
  54             mode=1,
  55             best_share_hash=self.node.best_share_hash_func(),
  56         )
  57
  58         reactor.callLater(10, self._connect_timeout)
  59         self.timeout_delayed = reactor.callLater(100, self._timeout)
  60
  61     def _connect_timeout(self):
  62         if not self.connected2 and self.transport.connected:
  63             print 'Handshake timed out, disconnecting from %s:%i' % self.addr
  64             self.transport.loseConnection()
  65
  66     def packetReceived(self, command, payload2):
  67         if command != 'version' and not self.connected2:
  68             self.transport.loseConnection()
  69             return
  70
  71         if not self.timeout_delayed.called:
  72             self.timeout_delayed.cancel()
  73             self.timeout_delayed = reactor.callLater(100, self._timeout)
  74
  75         bitcoin_p2p.BaseProtocol.packetReceived(self, command, payload2)
  76
  77     def _timeout(self):
  78         if self.transport.connected:
  79             print 'Connection timed out, disconnecting from %s:%i' % self.addr
  80             self.transport.loseConnection()
  81
  82     @defer.inlineCallbacks
  83     def _think(self):
  84         while self.connected2:
  85             self.send_ping()
  86             yield deferral.sleep(random.expovariate(1/100))
  87
  88     @defer.inlineCallbacks
  89     def _think2(self):
  90         while self.connected2:
  91             self.send_addrme(port=self.node.port)
  92             #print 'sending addrme'
  93             yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1)))
  94
  95     message_version = pack.ComposedType([
  96         ('version', pack.IntType(32)),
  97         ('services', pack.IntType(64)),
  98         ('addr_to', bitcoin_data.address_type),
  99         ('addr_from', bitcoin_data.address_type),
 100         ('nonce', pack.IntType(64)),
 101         ('sub_version', pack.VarStrType()),
 102         ('mode', pack.IntType(32)), # always 1 for legacy compatibility
 103         ('best_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
 104     ])
 105     def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
 106         if self.other_version is not None or version < 2:
 107             self.transport.loseConnection()
 108             return
 109
 110         self.other_version = version
 111         self.other_sub_version = sub_version[:512]
 112         self.other_services = services
 113
 114         if nonce == self.node.nonce:
 115             #print 'Detected connection to self, disconnecting from %s:%i' % self.addr
 116             self.transport.loseConnection()
 117             return
 118         if nonce in self.node.peers:
 119             #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr
 120             self.transport.loseConnection()
 121             return
 122
 123         self.nonce = nonce
 124         self.connected2 = True
 125         self.factory.proto_connected(self)
 126
 127         self._think()
 128         self._think2()
 129
 130         if best_share_hash is not None:
 131             self.node.handle_share_hashes([best_share_hash], self)
 132
 133     message_ping = pack.ComposedType([])
 134     def handle_ping(self):
 135         pass
 136
 137     message_addrme = pack.ComposedType([
 138         ('port', pack.IntType(16)),
 139     ])
 140     def handle_addrme(self, port):
 141         host = self.transport.getPeer().host
 142         #print 'addrme from', host, port
 143         if host == '127.0.0.1':
 144             if random.random() < .8 and self.node.peers:
 145                 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
 146         else:
 147             self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
 148             if random.random() < .8 and self.node.peers:
 149                 random.choice(self.node.peers.values()).send_addrs(addrs=[
 150                     dict(
 151                         address=dict(
 152                             services=self.other_services,
 153                             address=host,
 154                             port=port,
 155                         ),
 156                         timestamp=int(time.time()),
 157                     ),
 158                 ])
 159
 160     message_addrs = pack.ComposedType([
 161         ('addrs', pack.ListType(pack.ComposedType([
 162             ('timestamp', pack.IntType(64)),
 163             ('address', bitcoin_data.address_type),
 164         ]))),
 165     ])
 166     def handle_addrs(self, addrs):
 167         for addr_record in addrs:
 168             self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
 169             if random.random() < .8 and self.node.peers:
 170                 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
 171
 172     message_getaddrs = pack.ComposedType([
 173         ('count', pack.IntType(32)),
 174     ])
 175     def handle_getaddrs(self, count):
 176         if count > 100:
 177             count = 100
 178         self.send_addrs(addrs=[
 179             dict(
 180                 timestamp=self.node.addr_store[host, port][2],
 181                 address=dict(
 182                     services=self.node.addr_store[host, port][0],
 183                     address=host,
 184                     port=port,
 185                 ),
 186             ) for host, port in
 187             self.node.get_good_peers(count)
 188         ])
 189
 190     message_getshares = pack.ComposedType([
 191         ('hashes', pack.ListType(pack.IntType(256))),
 192         ('parents', pack.VarIntType()),
 193         ('stops', pack.ListType(pack.IntType(256))),
 194     ])
 195     def handle_getshares(self, hashes, parents, stops):
 196         self.node.handle_get_shares(hashes, parents, stops, self)
 197
 198     message_shares = pack.ComposedType([
 199         ('shares', pack.ListType(p2pool_data.share_type)),
 200     ])
 201     def handle_shares(self, shares):
 202         res = []
 203         for share in shares:
 204             share_obj = p2pool_data.Share.from_share(share, self.node.net)
 205             share_obj.peer = self
 206             res.append(share_obj)
 207         self.node.handle_shares(res, self)
 208
 209     def sendShares(self, shares, full=False):
 210         def att(f, **kwargs):
 211             try:
 212                 f(**kwargs)
 213             except bitcoin_p2p.TooLong:
 214                 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
 215                 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
 216         if shares:
 217             att(self.send_shares, shares=[share.as_share() for share in shares])
 218
 219     def connectionLost(self, reason):
 220         if self.connected2:
 221             self.factory.proto_disconnected(self)
 222             self.connected2 = False
 223         self.factory.proto_lost_connection(self)
 224
 225 class ServerFactory(protocol.ServerFactory):
 226     def __init__(self, node, max_conns):
 227         self.node = node
 228         self.max_conns = max_conns
 229
 230         self.conns = set()
 231         self.running = False
 232
 233     def buildProtocol(self, addr):
 234         if len(self.conns) >= self.max_conns:
 235             return None
 236         p = Protocol(self.node, True)
 237         p.factory = self
 238         return p
 239
 240     def proto_made_connection(self, proto):
 241         self.conns.add(proto)
 242     def proto_lost_connection(self, proto):
 243         self.conns.remove(proto)
 244
 245     def proto_connected(self, proto):
 246         self.node.got_conn(proto)
 247     def proto_disconnected(self, proto):
 248         self.node.lost_conn(proto)
 249
 250     def start(self):
 251         assert not self.running
 252         self.running = True
 253
 254         def attempt_listen():
 255             if not self.running:
 256                 return
 257             try:
 258                 self.listen_port = reactor.listenTCP(self.node.port, self)
 259             except error.CannotListenError, e:
 260                 print >>sys.stderr, 'Error binding to P2P port: %s. Retrying in 3 seconds.' % (e.socketError,)
 261                 reactor.callLater(3, attempt_listen)
 262         attempt_listen()
 263
 264     def stop(self):
 265         assert self.running
 266         self.running = False
 267
 268         self.listen_port.stopListening()
 269
 270 class ClientFactory(protocol.ClientFactory):
 271     def __init__(self, node, desired_conns, max_attempts):
 272         self.node = node
 273         self.desired_conns = desired_conns
 274         self.max_attempts = max_attempts
 275
 276         self.attempts = {}
 277         self.conns = set()
 278         self.running = False
 279
 280     def buildProtocol(self, addr):
 281         p = Protocol(self.node, False)
 282         p.factory = self
 283         return p
 284
 285     def startedConnecting(self, connector):
 286         host, port = connector.getDestination().host, connector.getDestination().port
 287         if (host, port) in self.attempts:
 288             raise ValueError('already have attempt')
 289         self.attempts[host, port] = connector
 290
 291     def clientConnectionFailed(self, connector, reason):
 292         self.clientConnectionLost(connector, reason)
 293
 294     def clientConnectionLost(self, connector, reason):
 295         host, port = connector.getDestination().host, connector.getDestination().port
 296         if (host, port) not in self.attempts:
 297             raise ValueError('''don't have attempt''')
 298         if connector is not self.attempts[host, port]:
 299             raise ValueError('wrong connector')
 300         del self.attempts[host, port]
 301
 302     def proto_made_connection(self, proto):
 303         pass
 304     def proto_lost_connection(self, proto):
 305         pass
 306
 307     def proto_connected(self, proto):
 308         self.conns.add(proto)
 309         self.node.got_conn(proto)
 310     def proto_disconnected(self, proto):
 311         self.conns.remove(proto)
 312         self.node.lost_conn(proto)
 313
 314     def start(self):
 315         assert not self.running
 316         self.running = True
 317         self._think()
 318     def stop(self):
 319         assert self.running
 320         self.running = False
 321
 322     @defer.inlineCallbacks
 323     def _think(self):
 324         while self.running:
 325             try:
 326                 if len(self.conns) < self.desired_conns and len(self.attempts) < self.max_attempts and self.node.addr_store:
 327                     (host, port), = self.node.get_good_peers(1)
 328
 329                     if (host, port) not in self.attempts:
 330                         #print 'Trying to connect to', host, port
 331                         reactor.connectTCP(host, port, self, timeout=5)
 332             except:
 333                 log.err()
 334
 335             yield deferral.sleep(random.expovariate(1/1))
 336
 337 class SingleClientFactory(protocol.ReconnectingClientFactory):
 338     def __init__(self, node):
 339         self.node = node
 340
 341     def buildProtocol(self, addr):
 342         p = Protocol(self.node, incoming=False)
 343         p.factory = self
 344         return p
 345
 346     def proto_made_connection(self, proto):
 347         pass
 348     def proto_lost_connection(self, proto):
 349         pass
 350
 351     def proto_connected(self, proto):
 352         self.resetDelay()
 353         self.node.got_conn(proto)
 354     def proto_disconnected(self, proto):
 355         self.node.lost_conn(proto)
 356
 357 class Node(object):
 358     def __init__(self, best_share_hash_func, port, net, addr_store={}, connect_addrs=set(), desired_outgoing_conns=10, max_outgoing_attempts=30, max_incoming_conns=50, preferred_storage=1000):
 359         self.best_share_hash_func = best_share_hash_func
 360         self.port = port
 361         self.net = net
 362         self.addr_store = dict(addr_store)
 363         self.connect_addrs = connect_addrs
 364         self.preferred_storage = preferred_storage
 365
 366         self.nonce = random.randrange(2**64)
 367         self.peers = {}
 368         self.clientfactory = ClientFactory(self, desired_outgoing_conns, max_outgoing_attempts)
 369         self.serverfactory = ServerFactory(self, max_incoming_conns)
 370         self.running = False
 371
 372     def start(self):
 373         if self.running:
 374             raise ValueError('already running')
 375
 376         self.clientfactory.start()
 377         self.serverfactory.start()
 378         self.singleclientconnectors = [reactor.connectTCP(addr, port, SingleClientFactory(self)) for addr, port in self.connect_addrs]
 379
 380         self.running = True
 381
 382         self._think2()
 383
 384     @defer.inlineCallbacks
 385     def _think2(self):
 386         while self.running:
 387             try:
 388                 if len(self.addr_store) < self.preferred_storage and self.peers:
 389                     random.choice(self.peers.values()).send_getaddrs(count=8)
 390             except:
 391                 log.err()
 392
 393             yield deferral.sleep(random.expovariate(1/20))
 394
 395     def stop(self):
 396         if not self.running:
 397             raise ValueError('already stopped')
 398
 399         self.running = False
 400
 401         self.clientfactory.stop()
 402         self.serverfactory.stop()
 403         for singleclientconnector in self.singleclientconnectors:
 404             singleclientconnector.factory.stopTrying() # XXX will this disconnect a current connection?
 405         del self.singleclientconnectors
 406
 407     def got_conn(self, conn):
 408         if conn.nonce in self.peers:
 409             raise ValueError('already have peer')
 410         self.peers[conn.nonce] = conn
 411
 412         print '%s connection to peer %s:%i established. p2pool version: %i %r' % ('Incoming' if conn.incoming else 'Outgoing', conn.addr[0], conn.addr[1], conn.other_version, conn.other_sub_version)
 413
 414     def lost_conn(self, conn):
 415         if conn.nonce not in self.peers:
 416             raise ValueError('''don't have peer''')
 417         if conn is not self.peers[conn.nonce]:
 418             raise ValueError('wrong conn')
 419         del self.peers[conn.nonce]
 420
 421         print 'Lost peer %s:%i' % (conn.addr[0], conn.addr[1])
 422
 423
 424     def got_addr(self, (host, port), services, timestamp):
 425         if (host, port) in self.addr_store:
 426             old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
 427             self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
 428         else:
 429             self.addr_store[host, port] = services, timestamp, timestamp
 430
 431     def handle_shares(self, shares, peer):
 432         print 'handle_shares', (shares, peer)
 433
 434     def handle_share_hashes(self, hashes, peer):
 435         print 'handle_share_hashes', (hashes, peer)
 436
 437     def handle_get_shares(self, hashes, parents, stops, peer):
 438         print 'handle_get_shares', (hashes, parents, stops, peer)
 439
 440     def get_good_peers(self, max_count):
 441         t = time.time()
 442         return [x[0] for x in sorted(self.addr_store.iteritems(), key=lambda (k, (services, first_seen, last_seen)): -max(3600, last_seen - first_seen)/max(3600, t - last_seen)*random.expovariate(1))][:max_count]
 443
 444 if __name__ == '__main__':
 445     p = random.randrange(2**15, 2**16)
 446     for i in xrange(5):
 447         p2 = random.randrange(2**15, 2**16)
 448         print p, p2
 449         n = Node(p2, True, {addrdb_key.pack(dict(address='127.0.0.1', port=p)): addrdb_value.pack(dict(services=0, first_seen=int(time.time())-10, last_seen=int(time.time())))})
 450         n.start()
 451         p = p2
 452
 453     reactor.run()