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         old_dataReceived = self.dataReceived
  62         def new_dataReceived(data):
  63             if not self.timeout_delayed.called:
  64                 self.timeout_delayed.reset(100)
  65             old_dataReceived(data)
  66         self.dataReceived = new_dataReceived
  67
  68     def _connect_timeout(self):
  69         if not self.connected2 and self.transport.connected:
  70             print 'Handshake timed out, disconnecting from %s:%i' % self.addr
  71             self.transport.loseConnection()
  72
  73     def packetReceived(self, command, payload2):
  74         if command != 'version' and not self.connected2:
  75             self.transport.loseConnection()
  76             return
  77
  78         bitcoin_p2p.BaseProtocol.packetReceived(self, command, payload2)
  79
  80     def _timeout(self):
  81         if self.transport.connected:
  82             print 'Connection timed out, disconnecting from %s:%i' % self.addr
  83             self.transport.loseConnection()
  84
  85     @defer.inlineCallbacks
  86     def _think(self):
  87         while self.connected2:
  88             self.send_ping()
  89             yield deferral.sleep(random.expovariate(1/100))
  90
  91     @defer.inlineCallbacks
  92     def _think2(self):
  93         while self.connected2:
  94             self.send_addrme(port=self.node.port)
  95             #print 'sending addrme'
  96             yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1)))
  97
  98     message_version = pack.ComposedType([
  99         ('version', pack.IntType(32)),
 100         ('services', pack.IntType(64)),
 101         ('addr_to', bitcoin_data.address_type),
 102         ('addr_from', bitcoin_data.address_type),
 103         ('nonce', pack.IntType(64)),
 104         ('sub_version', pack.VarStrType()),
 105         ('mode', pack.IntType(32)), # always 1 for legacy compatibility
 106         ('best_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
 107     ])
 108     def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
 109         if self.other_version is not None or version < 2:
 110             self.transport.loseConnection()
 111             return
 112
 113         self.other_version = version
 114         self.other_sub_version = sub_version[:512]
 115         self.other_services = services
 116
 117         if nonce == self.node.nonce:
 118             #print 'Detected connection to self, disconnecting from %s:%i' % self.addr
 119             self.transport.loseConnection()
 120             return
 121         if nonce in self.node.peers:
 122             #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr
 123             self.transport.loseConnection()
 124             return
 125
 126         self.nonce = nonce
 127         self.connected2 = True
 128         self.factory.proto_connected(self)
 129
 130         self._think()
 131         self._think2()
 132
 133         if best_share_hash is not None:
 134             self.node.handle_share_hashes([best_share_hash], self)
 135
 136     message_ping = pack.ComposedType([])
 137     def handle_ping(self):
 138         pass
 139
 140     message_addrme = pack.ComposedType([
 141         ('port', pack.IntType(16)),
 142     ])
 143     def handle_addrme(self, port):
 144         host = self.transport.getPeer().host
 145         #print 'addrme from', host, port
 146         if host == '127.0.0.1':
 147             if random.random() < .8 and self.node.peers:
 148                 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
 149         else:
 150             self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
 151             if random.random() < .8 and self.node.peers:
 152                 random.choice(self.node.peers.values()).send_addrs(addrs=[
 153                     dict(
 154                         address=dict(
 155                             services=self.other_services,
 156                             address=host,
 157                             port=port,
 158                         ),
 159                         timestamp=int(time.time()),
 160                     ),
 161                 ])
 162
 163     message_addrs = pack.ComposedType([
 164         ('addrs', pack.ListType(pack.ComposedType([
 165             ('timestamp', pack.IntType(64)),
 166             ('address', bitcoin_data.address_type),
 167         ]))),
 168     ])
 169     def handle_addrs(self, addrs):
 170         for addr_record in addrs:
 171             self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
 172             if random.random() < .8 and self.node.peers:
 173                 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
 174
 175     message_getaddrs = pack.ComposedType([
 176         ('count', pack.IntType(32)),
 177     ])
 178     def handle_getaddrs(self, count):
 179         if count > 100:
 180             count = 100
 181         self.send_addrs(addrs=[
 182             dict(
 183                 timestamp=self.node.addr_store[host, port][2],
 184                 address=dict(
 185                     services=self.node.addr_store[host, port][0],
 186                     address=host,
 187                     port=port,
 188                 ),
 189             ) for host, port in
 190             self.node.get_good_peers(count)
 191         ])
 192
 193     message_getshares = pack.ComposedType([
 194         ('hashes', pack.ListType(pack.IntType(256))),
 195         ('parents', pack.VarIntType()),
 196         ('stops', pack.ListType(pack.IntType(256))),
 197     ])
 198     def handle_getshares(self, hashes, parents, stops):
 199         self.node.handle_get_shares(hashes, parents, stops, self)
 200
 201     message_shares = pack.ComposedType([
 202         ('shares', pack.ListType(p2pool_data.share_type)),
 203     ])
 204     def handle_shares(self, shares):
 205         res = []
 206         for share in shares:
 207             share_obj = p2pool_data.Share.from_share(share, self.node.net)
 208             share_obj.peer = self
 209             res.append(share_obj)
 210         self.node.handle_shares(res, self)
 211
 212     def sendShares(self, shares, full=False):
 213         def att(f, **kwargs):
 214             try:
 215                 f(**kwargs)
 216             except bitcoin_p2p.TooLong:
 217                 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
 218                 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
 219         if shares:
 220             att(self.send_shares, shares=[share.as_share() for share in shares])
 221
 222     def connectionLost(self, reason):
 223         if self.connected2:
 224             self.factory.proto_disconnected(self, reason)
 225             self.connected2 = False
 226         self.factory.proto_lost_connection(self, reason)
 227
 228 class ServerFactory(protocol.ServerFactory):
 229     def __init__(self, node, max_conns):
 230         self.node = node
 231         self.max_conns = max_conns
 232
 233         self.conns = set()
 234         self.running = False
 235
 236     def buildProtocol(self, addr):
 237         if len(self.conns) >= self.max_conns:
 238             return None
 239         p = Protocol(self.node, True)
 240         p.factory = self
 241         return p
 242
 243     def proto_made_connection(self, proto):
 244         self.conns.add(proto)
 245     def proto_lost_connection(self, proto, reason):
 246         self.conns.remove(proto)
 247
 248     def proto_connected(self, proto):
 249         self.node.got_conn(proto)
 250     def proto_disconnected(self, proto, reason):
 251         self.node.lost_conn(proto, reason)
 252
 253     def start(self):
 254         assert not self.running
 255         self.running = True
 256
 257         def attempt_listen():
 258             if not self.running:
 259                 return
 260             try:
 261                 self.listen_port = reactor.listenTCP(self.node.port, self)
 262             except error.CannotListenError, e:
 263                 print >>sys.stderr, 'Error binding to P2P port: %s. Retrying in 3 seconds.' % (e.socketError,)
 264                 reactor.callLater(3, attempt_listen)
 265         attempt_listen()
 266
 267     def stop(self):
 268         assert self.running
 269         self.running = False
 270
 271         self.listen_port.stopListening()
 272
 273 class ClientFactory(protocol.ClientFactory):
 274     def __init__(self, node, desired_conns, max_attempts):
 275         self.node = node
 276         self.desired_conns = desired_conns
 277         self.max_attempts = max_attempts
 278
 279         self.attempts = set()
 280         self.conns = set()
 281         self.running = False
 282
 283     def _host_to_ident(self, host):
 284         a, b, c, d = host.split('.')
 285         return a, b
 286
 287     def buildProtocol(self, addr):
 288         p = Protocol(self.node, False)
 289         p.factory = self
 290         return p
 291
 292     def startedConnecting(self, connector):
 293         ident = self._host_to_ident(connector.getDestination().host)
 294         if ident in self.attempts:
 295             raise AssertionError('already have attempt')
 296         self.attempts.add(ident)
 297
 298     def clientConnectionFailed(self, connector, reason):
 299         self.attempts.remove(self._host_to_ident(connector.getDestination().host))
 300
 301     def clientConnectionLost(self, connector, reason):
 302         self.attempts.remove(self._host_to_ident(connector.getDestination().host))
 303
 304     def proto_made_connection(self, proto):
 305         pass
 306     def proto_lost_connection(self, proto, reason):
 307         pass
 308
 309     def proto_connected(self, proto):
 310         self.conns.add(proto)
 311         self.node.got_conn(proto)
 312     def proto_disconnected(self, proto, reason):
 313         self.conns.remove(proto)
 314         self.node.lost_conn(proto, reason)
 315
 316     def start(self):
 317         assert not self.running
 318         self.running = True
 319         self._think()
 320     def stop(self):
 321         assert self.running
 322         self.running = False
 323
 324     @defer.inlineCallbacks
 325     def _think(self):
 326         while self.running:
 327             try:
 328                 if len(self.conns) < self.desired_conns and len(self.attempts) < self.max_attempts and self.node.addr_store:
 329                     (host, port), = self.node.get_good_peers(1)
 330
 331                     if self._host_to_ident(host) not in self.attempts:
 332                         #print 'Trying to connect to', host, port
 333                         reactor.connectTCP(host, port, self, timeout=5)
 334             except:
 335                 log.err()
 336
 337             yield deferral.sleep(random.expovariate(1/1))
 338
 339 class SingleClientFactory(protocol.ReconnectingClientFactory):
 340     def __init__(self, node):
 341         self.node = node
 342
 343     def buildProtocol(self, addr):
 344         p = Protocol(self.node, incoming=False)
 345         p.factory = self
 346         return p
 347
 348     def proto_made_connection(self, proto):
 349         pass
 350     def proto_lost_connection(self, proto, reason):
 351         pass
 352
 353     def proto_connected(self, proto):
 354         self.resetDelay()
 355         self.node.got_conn(proto)
 356     def proto_disconnected(self, proto, reason):
 357         self.node.lost_conn(proto, reason)
 358
 359 class Node(object):
 360     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):
 361         self.best_share_hash_func = best_share_hash_func
 362         self.port = port
 363         self.net = net
 364         self.addr_store = dict(addr_store)
 365         self.connect_addrs = connect_addrs
 366         self.preferred_storage = preferred_storage
 367
 368         self.nonce = random.randrange(2**64)
 369         self.peers = {}
 370         self.clientfactory = ClientFactory(self, desired_outgoing_conns, max_outgoing_attempts)
 371         self.serverfactory = ServerFactory(self, max_incoming_conns)
 372         self.running = False
 373
 374     def start(self):
 375         if self.running:
 376             raise ValueError('already running')
 377
 378         self.clientfactory.start()
 379         self.serverfactory.start()
 380         self.singleclientconnectors = [reactor.connectTCP(addr, port, SingleClientFactory(self)) for addr, port in self.connect_addrs]
 381
 382         self.running = True
 383
 384         self._think2()
 385
 386     @defer.inlineCallbacks
 387     def _think2(self):
 388         while self.running:
 389             try:
 390                 if len(self.addr_store) < self.preferred_storage and self.peers:
 391                     random.choice(self.peers.values()).send_getaddrs(count=8)
 392             except:
 393                 log.err()
 394
 395             yield deferral.sleep(random.expovariate(1/20))
 396
 397     def stop(self):
 398         if not self.running:
 399             raise ValueError('already stopped')
 400
 401         self.running = False
 402
 403         self.clientfactory.stop()
 404         self.serverfactory.stop()
 405         for singleclientconnector in self.singleclientconnectors:
 406             singleclientconnector.factory.stopTrying() # XXX will this disconnect a current connection?
 407         del self.singleclientconnectors
 408
 409     def got_conn(self, conn):
 410         if conn.nonce in self.peers:
 411             raise ValueError('already have peer')
 412         self.peers[conn.nonce] = conn
 413
 414         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)
 415
 416     def lost_conn(self, conn, reason):
 417         if conn.nonce not in self.peers:
 418             raise ValueError('''don't have peer''')
 419         if conn is not self.peers[conn.nonce]:
 420             raise ValueError('wrong conn')
 421         del self.peers[conn.nonce]
 422
 423         print 'Lost peer %s:%i - %s' % (conn.addr[0], conn.addr[1], reason.getErrorMessage())
 424
 425
 426     def got_addr(self, (host, port), services, timestamp):
 427         if (host, port) in self.addr_store:
 428             old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
 429             self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
 430         else:
 431             self.addr_store[host, port] = services, timestamp, timestamp
 432
 433     def handle_shares(self, shares, peer):
 434         print 'handle_shares', (shares, peer)
 435
 436     def handle_share_hashes(self, hashes, peer):
 437         print 'handle_share_hashes', (hashes, peer)
 438
 439     def handle_get_shares(self, hashes, parents, stops, peer):
 440         print 'handle_get_shares', (hashes, parents, stops, peer)
 441
 442     def get_good_peers(self, max_count):
 443         t = time.time()
 444         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]
 445
 446 if __name__ == '__main__':
 447     p = random.randrange(2**15, 2**16)
 448     for i in xrange(5):
 449         p2 = random.randrange(2**15, 2**16)
 450         print p, p2
 451         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())))})
 452         n.start()
 453         p = p2
 454
 455     reactor.run()