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):
  20         self.node = node
  21
  22         self._prefix = self.node.net.PREFIX
  23
  24     max_payload_length = 1000000
  25     use_checksum = True
  26
  27     other_version = None
  28     connected2 = False
  29
  30     def connectionMade(self):
  31         bitcoin_p2p.BaseProtocol.connectionMade(self)
  32
  33         self.node.conns.add(self)
  34
  35         self.addr = self.transport.getPeer().host, self.transport.getPeer().port
  36
  37         self.send_version(
  38             version=self.version,
  39             services=0,
  40             addr_to=dict(
  41                 services=0,
  42                 address=self.transport.getPeer().host,
  43                 port=self.transport.getPeer().port,
  44             ),
  45             addr_from=dict(
  46                 services=0,
  47                 address=self.transport.getHost().host,
  48                 port=self.transport.getHost().port,
  49             ),
  50             nonce=self.node.nonce,
  51             sub_version=self.sub_version,
  52             mode=1,
  53             best_share_hash=self.node.best_share_hash_func(),
  54         )
  55
  56         reactor.callLater(10, self._connect_timeout)
  57         self.timeout_delayed = reactor.callLater(100, self._timeout)
  58
  59     def _connect_timeout(self):
  60         if not self.connected2 and self.transport.connected:
  61             print 'Handshake timed out, disconnecting from %s:%i' % self.addr
  62             self.transport.loseConnection()
  63
  64     def gotPacket(self):
  65         if not self.timeout_delayed.called:
  66             self.timeout_delayed.cancel()
  67             self.timeout_delayed = reactor.callLater(100, self._timeout)
  68
  69     def _timeout(self):
  70         if self.transport.connected:
  71             print 'Connection timed out, disconnecting from %s:%i' % self.addr
  72             self.transport.loseConnection()
  73
  74     @defer.inlineCallbacks
  75     def _think(self):
  76         while self.connected2:
  77             self.send_ping()
  78             yield deferral.sleep(random.expovariate(1/100))
  79
  80     @defer.inlineCallbacks
  81     def _think2(self):
  82         while self.connected2:
  83             self.send_addrme(port=self.node.port)
  84             #print 'sending addrme'
  85             yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1)))
  86
  87     message_version = bitcoin_data.ComposedType([
  88         ('version', bitcoin_data.StructType('<I')),
  89         ('services', bitcoin_data.StructType('<Q')),
  90         ('addr_to', bitcoin_data.address_type),
  91         ('addr_from', bitcoin_data.address_type),
  92         ('nonce', bitcoin_data.StructType('<Q')),
  93         ('sub_version', bitcoin_data.VarStrType()),
  94         ('mode', bitcoin_data.StructType('<I')), # always 1 for legacy compatibility
  95         ('best_share_hash', bitcoin_data.PossiblyNoneType(0, bitcoin_data.HashType())),
  96     ])
  97     def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
  98         if self.other_version is not None or version < 2:
  99             self.transport.loseConnection()
 100             return
 101
 102         self.other_version = version
 103         self.other_sub_version = sub_version[:512]
 104         self.other_services = services
 105
 106         if nonce == self.node.nonce:
 107             #print 'Detected connection to self, disconnecting from %s:%i' % self.addr
 108             self.transport.loseConnection()
 109             return
 110         if nonce in self.node.peers:
 111             #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr
 112             self.transport.loseConnection()
 113             return
 114
 115         self.nonce = nonce
 116         self.connected2 = True
 117         self.node.got_conn(self)
 118
 119         self._think()
 120         self._think2()
 121
 122         if best_share_hash is not None:
 123             self.node.handle_share_hashes([best_share_hash], self)
 124
 125     message_ping = bitcoin_data.ComposedType([])
 126     def handle_ping(self):
 127         pass
 128
 129     message_addrme = bitcoin_data.ComposedType([
 130         ('port', bitcoin_data.StructType('<H')),
 131     ])
 132     def handle_addrme(self, port):
 133         host = self.transport.getPeer().host
 134         #print 'addrme from', host, port
 135         if host == '127.0.0.1':
 136             if random.random() < .8 and self.node.peers:
 137                 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
 138         else:
 139             self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
 140             if random.random() < .8 and self.node.peers:
 141                 random.choice(self.node.peers.values()).send_addrs(addrs=[
 142                     dict(
 143                         address=dict(
 144                             services=self.other_services,
 145                             address=host,
 146                             port=port,
 147                         ),
 148                         timestamp=int(time.time()),
 149                     ),
 150                 ])
 151
 152     message_addrs = bitcoin_data.ComposedType([
 153         ('addrs', bitcoin_data.ListType(bitcoin_data.ComposedType([
 154             ('timestamp', bitcoin_data.StructType('<Q')),
 155             ('address', bitcoin_data.address_type),
 156         ]))),
 157     ])
 158     def handle_addrs(self, addrs):
 159         for addr_record in addrs:
 160             self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
 161             if random.random() < .8 and self.node.peers:
 162                 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
 163
 164     message_getaddrs = bitcoin_data.ComposedType([
 165         ('count', bitcoin_data.StructType('<I')),
 166     ])
 167     def handle_getaddrs(self, count):
 168         if count > 100:
 169             count = 100
 170         self.send_addrs(addrs=[
 171             dict(
 172                 timestamp=self.node.addr_store[host, port][2],
 173                 address=dict(
 174                     services=self.node.addr_store[host, port][0],
 175                     address=host,
 176                     port=port,
 177                 ),
 178             ) for host, port in
 179             self.node.get_good_peers(count)
 180         ])
 181
 182     message_getshares = bitcoin_data.ComposedType([
 183         ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
 184         ('parents', bitcoin_data.VarIntType()),
 185         ('stops', bitcoin_data.ListType(bitcoin_data.HashType())),
 186     ])
 187     def handle_getshares(self, hashes, parents, stops):
 188         self.node.handle_get_shares(hashes, parents, stops, self)
 189
 190     message_shares = bitcoin_data.ComposedType([
 191         ('shares', bitcoin_data.ListType(p2pool_data.share_type)),
 192     ])
 193     def handle_shares(self, shares):
 194         res = []
 195         for share in shares:
 196             share_obj = p2pool_data.Share.from_share(share, self.node.net)
 197             share_obj.peer = self
 198             res.append(share_obj)
 199         self.node.handle_shares(res)
 200
 201     def sendShares(self, shares, full=False):
 202         def att(f, **kwargs):
 203             try:
 204                 f(**kwargs)
 205             except bitcoin_p2p.TooLong:
 206                 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
 207                 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
 208         if shares:
 209             att(self.send_shares, shares=[share.as_share() for share in shares])
 210
 211     def connectionLost(self, reason):
 212         self.node.conns.remove(self)
 213         if self.connected2:
 214             self.node.lost_conn(self)
 215             self.connected2 = False
 216
 217 class ServerFactory(protocol.ServerFactory):
 218     def __init__(self, node):
 219         self.node = node
 220
 221     def buildProtocol(self, addr):
 222         if len(self.node.conns) >= self.node.max_conns:
 223             return None
 224         p = Protocol(self.node)
 225         p.factory = self
 226         return p
 227
 228 class ClientFactory(protocol.ClientFactory):
 229     def __init__(self, node):
 230         self.node = node
 231
 232     def buildProtocol(self, addr):
 233         p = Protocol(self.node)
 234         p.factory = self
 235         return p
 236
 237     def startedConnecting(self, connector):
 238         self.node.attempt_started(connector)
 239
 240     def clientConnectionFailed(self, connector, reason):
 241         self.node.attempt_failed(connector)
 242
 243     def clientConnectionLost(self, connector, reason):
 244         self.node.attempt_ended(connector)
 245
 246 class Node(object):
 247     def __init__(self, best_share_hash_func, port, net, addr_store=None, preferred_addrs=set(), desired_peers=10, max_conns=50, max_attempts=30, preferred_storage=1000):
 248         if addr_store is None:
 249             addr_store = {}
 250
 251         self.best_share_hash_func = best_share_hash_func
 252         self.port = port
 253         self.net = net
 254         self.addr_store = addr_store
 255         self.preferred_addrs = preferred_addrs
 256         self.desired_peers = desired_peers
 257         self.max_conns = max_conns
 258         self.max_attempts = max_attempts
 259         self.preferred_storage = preferred_storage
 260
 261         self.nonce = random.randrange(2**64)
 262         self.conns = set()
 263         self.attempts = {}
 264         self.peers = {}
 265         self.running = False
 266
 267     def start(self):
 268         if self.running:
 269             raise ValueError('already running')
 270
 271         self.running = True
 272
 273         self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
 274
 275         self._think()
 276         self._think2()
 277
 278     @defer.inlineCallbacks
 279     def _think(self):
 280         while self.running:
 281             try:
 282                 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
 283                     if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
 284                         host, port = random.choice(list(self.preferred_addrs))
 285                     else:
 286                         (host, port), = self.get_good_peers(1)
 287
 288                     if (host, port) not in self.attempts:
 289                         #print 'Trying to connect to', host, port
 290                         reactor.connectTCP(host, port, ClientFactory(self), timeout=5)
 291             except:
 292                 log.err()
 293
 294             yield deferral.sleep(random.expovariate(1/1))
 295
 296     @defer.inlineCallbacks
 297     def _think2(self):
 298         while self.running:
 299             try:
 300                 if len(self.addr_store) < self.preferred_storage and self.peers:
 301                     random.choice(self.peers.values()).send_getaddrs(count=8)
 302             except:
 303                 log.err()
 304
 305             yield deferral.sleep(random.expovariate(1/20))
 306
 307     def stop(self):
 308         if not self.running:
 309             raise ValueError('already stopped')
 310
 311         self.running = False
 312
 313         self.listen_port.stopListening()
 314
 315
 316     def attempt_started(self, connector):
 317         host, port = connector.getDestination().host, connector.getDestination().port
 318         if (host, port) in self.attempts:
 319             raise ValueError('already have attempt')
 320         self.attempts[host, port] = connector
 321
 322     def attempt_failed(self, connector):
 323         self.attempt_ended(connector)
 324
 325     def attempt_ended(self, connector):
 326         host, port = connector.getDestination().host, connector.getDestination().port
 327         if (host, port) not in self.attempts:
 328             raise ValueError('''don't have attempt''')
 329         if connector is not self.attempts[host, port]:
 330             raise ValueError('wrong connector')
 331         del self.attempts[host, port]
 332
 333
 334     def got_conn(self, conn):
 335         if conn.nonce in self.peers:
 336             raise ValueError('already have peer')
 337         self.peers[conn.nonce] = conn
 338
 339         print 'Connected to peer %s:%i. p2pool version: %i %r' % (conn.addr[0], conn.addr[1], conn.other_version, conn.other_sub_version)
 340
 341     def lost_conn(self, conn):
 342         if conn.nonce not in self.peers:
 343             raise ValueError('''don't have peer''')
 344         if conn is not self.peers[conn.nonce]:
 345             raise ValueError('wrong conn')
 346         del self.peers[conn.nonce]
 347
 348         print 'Lost peer %s:%i' % (conn.addr[0], conn.addr[1])
 349
 350
 351     def got_addr(self, (host, port), services, timestamp):
 352         if (host, port) in self.addr_store:
 353             old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
 354             self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
 355         else:
 356             self.addr_store[host, port] = services, timestamp, timestamp
 357
 358     def handle_shares(self, shares, peer):
 359         print 'handle_shares', (shares, peer)
 360
 361     def handle_share_hashes(self, hashes, peer):
 362         print 'handle_share_hashes', (hashes, peer)
 363
 364     def handle_get_shares(self, hashes, parents, stops, peer):
 365         print 'handle_get_shares', (hashes, parents, stops, peer)
 366
 367     def get_good_peers(self, max_count):
 368         t = time.time()
 369         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]
 370
 371 if __name__ == '__main__':
 372     p = random.randrange(2**15, 2**16)
 373     for i in xrange(5):
 374         p2 = random.randrange(2**15, 2**16)
 375         print p, p2
 376         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())))})
 377         n.start()
 378         p = p2
 379
 380     reactor.run()