p2pool/p2p.py

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