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