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
  14
  15 class Protocol(bitcoin_p2p.BaseProtocol):
  16     version = 2
  17     sub_version = p2pool.__version__
  18
  19     def __init__(self, node, incoming):
  20         self.node = node
  21         self.incoming = incoming
  22
  23         self._prefix = self.node.net.PREFIX
  24
  25     max_payload_length = 1000000
  26     use_checksum = True
  27
  28     other_version = None
  29     connected2 = False
  30
  31     def connectionMade(self):
  32         bitcoin_p2p.BaseProtocol.connectionMade(self)
  33
  34         self.factory.proto_made_connection(self)
  35
  36         self.addr = self.transport.getPeer().host, self.transport.getPeer().port
  37
  38         self.send_version(
  39             version=self.version,
  40             services=0,
  41             addr_to=dict(
  42                 services=0,
  43                 address=self.transport.getPeer().host,
  44                 port=self.transport.getPeer().port,
  45             ),
  46             addr_from=dict(
  47                 services=0,
  48                 address=self.transport.getHost().host,
  49                 port=self.transport.getHost().port,
  50             ),
  51             nonce=self.node.nonce,
  52             sub_version=self.sub_version,
  53             mode=1,
  54             best_share_hash=self.node.best_share_hash_func(),
  55         )
  56
  57         reactor.callLater(10, self._connect_timeout)
  58         self.timeout_delayed = reactor.callLater(100, self._timeout)
  59
  60     def _connect_timeout(self):
  61         if not self.connected2 and self.transport.connected:
  62             print 'Handshake timed out, disconnecting from %s:%i' % self.addr
  63             self.transport.loseConnection()
  64
  65     def gotPacket(self):
  66         if not self.timeout_delayed.called:
  67             self.timeout_delayed.cancel()
  68             self.timeout_delayed = reactor.callLater(100, self._timeout)
  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 = bitcoin_data.ComposedType([
  89         ('version', bitcoin_data.StructType('<I')),
  90         ('services', bitcoin_data.StructType('<Q')),
  91         ('addr_to', bitcoin_data.address_type),
  92         ('addr_from', bitcoin_data.address_type),
  93         ('nonce', bitcoin_data.StructType('<Q')),
  94         ('sub_version', bitcoin_data.VarStrType()),
  95         ('mode', bitcoin_data.StructType('<I')), # always 1 for legacy compatibility
  96         ('best_share_hash', bitcoin_data.PossiblyNoneType(0, bitcoin_data.HashType())),
  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 = bitcoin_data.ComposedType([])
 127     def handle_ping(self):
 128         if not self.connected2:
 129             self.transport.loseConnection()
 130             return
 131
 132     message_addrme = bitcoin_data.ComposedType([
 133         ('port', bitcoin_data.StructType('<H')),
 134     ])
 135     def handle_addrme(self, port):
 136         if not self.connected2:
 137             self.transport.loseConnection()
 138             return
 139         host = self.transport.getPeer().host
 140         #print 'addrme from', host, port
 141         if host == '127.0.0.1':
 142             if random.random() < .8 and self.node.peers:
 143                 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
 144         else:
 145             self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
 146             if random.random() < .8 and self.node.peers:
 147                 random.choice(self.node.peers.values()).send_addrs(addrs=[
 148                     dict(
 149                         address=dict(
 150                             services=self.other_services,
 151                             address=host,
 152                             port=port,
 153                         ),
 154                         timestamp=int(time.time()),
 155                     ),
 156                 ])
 157
 158     message_addrs = bitcoin_data.ComposedType([
 159         ('addrs', bitcoin_data.ListType(bitcoin_data.ComposedType([
 160             ('timestamp', bitcoin_data.StructType('<Q')),
 161             ('address', bitcoin_data.address_type),
 162         ]))),
 163     ])
 164     def handle_addrs(self, addrs):
 165         if not self.connected2:
 166             self.transport.loseConnection()
 167             return
 168         for addr_record in addrs:
 169             self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
 170             if random.random() < .8 and self.node.peers:
 171                 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
 172
 173     message_getaddrs = bitcoin_data.ComposedType([
 174         ('count', bitcoin_data.StructType('<I')),
 175     ])
 176     def handle_getaddrs(self, count):
 177         if not self.connected2:
 178             self.transport.loseConnection()
 179             return
 180         if count > 100:
 181             count = 100
 182         self.send_addrs(addrs=[
 183             dict(
 184                 timestamp=self.node.addr_store[host, port][2],
 185                 address=dict(
 186                     services=self.node.addr_store[host, port][0],
 187                     address=host,
 188                     port=port,
 189                 ),
 190             ) for host, port in
 191             self.node.get_good_peers(count)
 192         ])
 193
 194     message_getshares = bitcoin_data.ComposedType([
 195         ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
 196         ('parents', bitcoin_data.VarIntType()),
 197         ('stops', bitcoin_data.ListType(bitcoin_data.HashType())),
 198     ])
 199     def handle_getshares(self, hashes, parents, stops):
 200         if not self.connected2:
 201             self.transport.loseConnection()
 202             return
 203         self.node.handle_get_shares(hashes, parents, stops, self)
 204
 205     message_shares = bitcoin_data.ComposedType([
 206         ('shares', bitcoin_data.ListType(p2pool_data.share_type)),
 207     ])
 208     def handle_shares(self, shares):
 209         if not self.connected2:
 210             self.transport.loseConnection()
 211             return
 212         res = []
 213         for share in shares:
 214             share_obj = p2pool_data.Share.from_share(share, self.node.net)
 215             share_obj.peer = self
 216             res.append(share_obj)
 217         self.node.handle_shares(res, self)
 218
 219     def sendShares(self, shares, full=False):
 220         def att(f, **kwargs):
 221             try:
 222                 f(**kwargs)
 223             except bitcoin_p2p.TooLong:
 224                 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
 225                 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
 226         if shares:
 227             att(self.send_shares, shares=[share.as_share() for share in shares])
 228
 229     def connectionLost(self, reason):
 230         if self.connected2:
 231             self.factory.proto_disconnected(self)
 232             self.connected2 = False
 233         self.factory.proto_lost_connection(self)
 234
 235 class ServerFactory(protocol.ServerFactory):
 236     def __init__(self, node, max_conns):
 237         self.node = node
 238         self.max_conns = max_conns
 239
 240         self.conns = set()
 241         self.running = False
 242
 243     def buildProtocol(self, addr):
 244         if len(self.conns) >= self.max_conns:
 245             return None
 246         p = Protocol(self.node, True)
 247         p.factory = self
 248         return p
 249
 250     def proto_made_connection(self, proto):
 251         self.conns.add(proto)
 252     def proto_lost_connection(self, proto):
 253         self.conns.remove(proto)
 254
 255     def proto_connected(self, proto):
 256         self.node.got_conn(proto)
 257     def proto_disconnected(self, proto):
 258         self.node.lost_conn(proto)
 259
 260     def start(self):
 261         assert not self.running
 262         self.running = True
 263
 264         self.listen_port = reactor.listenTCP(self.node.port, self)
 265     def stop(self):
 266         assert self.running
 267         self.running = False
 268
 269         self.listen_port.stopListening()
 270
 271 class ClientFactory(protocol.ClientFactory):
 272     def __init__(self, node, desired_conns, max_attempts, preferred_addrs):
 273         self.node = node
 274         self.desired_conns = desired_conns
 275         self.max_attempts = max_attempts
 276         self.preferred_addrs = preferred_addrs
 277
 278         self.attempts = {}
 279         self.conns = set()
 280         self.running = False
 281
 282     def buildProtocol(self, addr):
 283         p = Protocol(self.node, False)
 284         p.factory = self
 285         return p
 286
 287     def startedConnecting(self, connector):
 288         host, port = connector.getDestination().host, connector.getDestination().port
 289         if (host, port) in self.attempts:
 290             raise ValueError('already have attempt')
 291         self.attempts[host, port] = connector
 292
 293     def clientConnectionFailed(self, connector, reason):
 294         self.clientConnectionLost(connector, reason)
 295
 296     def clientConnectionLost(self, connector, reason):
 297         host, port = connector.getDestination().host, connector.getDestination().port
 298         if (host, port) not in self.attempts:
 299             raise ValueError('''don't have attempt''')
 300         if connector is not self.attempts[host, port]:
 301             raise ValueError('wrong connector')
 302         del self.attempts[host, port]
 303
 304     def proto_made_connection(self, proto):
 305         pass
 306     def proto_lost_connection(self, proto):
 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):
 313         self.conns.remove(proto)
 314         self.node.lost_conn(proto)
 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 (len(self.preferred_addrs) or len(self.node.addr_store)):
 329                     if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.node.addr_store):
 330                         host, port = random.choice(list(self.preferred_addrs))
 331                     else:
 332                         (host, port), = self.node.get_good_peers(1)
 333
 334                     if (host, port) not in self.attempts:
 335                         #print 'Trying to connect to', host, port
 336                         reactor.connectTCP(host, port, self, timeout=5)
 337             except:
 338                 log.err()
 339
 340             yield deferral.sleep(random.expovariate(1/1))
 341
 342 class Node(object):
 343     def __init__(self, best_share_hash_func, port, net, addr_store={}, preferred_addrs=set(), desired_outgoing_conns=10, max_outgoing_attempts=30, max_incoming_conns=50, preferred_storage=1000):
 344         self.best_share_hash_func = best_share_hash_func
 345         self.port = port
 346         self.net = net
 347         self.addr_store = dict(addr_store)
 348         self.preferred_storage = preferred_storage
 349
 350         self.nonce = random.randrange(2**64)
 351         self.peers = {}
 352         self.clientfactory = ClientFactory(self, desired_outgoing_conns, max_outgoing_attempts, preferred_addrs)
 353         self.serverfactory = ServerFactory(self, max_incoming_conns)
 354         self.running = False
 355
 356     def start(self):
 357         if self.running:
 358             raise ValueError('already running')
 359
 360         self.clientfactory.start()
 361         self.serverfactory.start()
 362
 363         self.running = True
 364
 365         self._think2()
 366
 367     @defer.inlineCallbacks
 368     def _think2(self):
 369         while self.running:
 370             try:
 371                 if len(self.addr_store) < self.preferred_storage and self.peers:
 372                     random.choice(self.peers.values()).send_getaddrs(count=8)
 373             except:
 374                 log.err()
 375
 376             yield deferral.sleep(random.expovariate(1/20))
 377
 378     def stop(self):
 379         if not self.running:
 380             raise ValueError('already stopped')
 381
 382         self.running = False
 383
 384         self.clientfactory.stop()
 385         self.serverfactory.stop()
 386
 387     def got_conn(self, conn):
 388         if conn.nonce in self.peers:
 389             raise ValueError('already have peer')
 390         self.peers[conn.nonce] = conn
 391
 392         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)
 393
 394     def lost_conn(self, conn):
 395         if conn.nonce not in self.peers:
 396             raise ValueError('''don't have peer''')
 397         if conn is not self.peers[conn.nonce]:
 398             raise ValueError('wrong conn')
 399         del self.peers[conn.nonce]
 400
 401         print 'Lost peer %s:%i' % (conn.addr[0], conn.addr[1])
 402
 403
 404     def got_addr(self, (host, port), services, timestamp):
 405         if (host, port) in self.addr_store:
 406             old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
 407             self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
 408         else:
 409             self.addr_store[host, port] = services, timestamp, timestamp
 410
 411     def handle_shares(self, shares, peer):
 412         print 'handle_shares', (shares, peer)
 413
 414     def handle_share_hashes(self, hashes, peer):
 415         print 'handle_share_hashes', (hashes, peer)
 416
 417     def handle_get_shares(self, hashes, parents, stops, peer):
 418         print 'handle_get_shares', (hashes, parents, stops, peer)
 419
 420     def get_good_peers(self, max_count):
 421         t = time.time()
 422         return [x[0] for x in sorted(self.addr_store.iteritems(), key=lambda (k, (services, first_seen, last_seen)): -(last_seen - first_seen)/max(3600, t - last_seen)*random.expovariate(1))][:max_count]
 423
 424 if __name__ == '__main__':
 425     p = random.randrange(2**15, 2**16)
 426     for i in xrange(5):
 427         p2 = random.randrange(2**15, 2**16)
 428         print p, p2
 429         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())))})
 430         n.start()
 431         p = p2
 432
 433     reactor.run()