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         if not self.connected2:
 128             self.transport.loseConnection()
 129             return
 130
 131     message_addrme = bitcoin_data.ComposedType([
 132         ('port', bitcoin_data.StructType('<H')),
 133     ])
 134     def handle_addrme(self, port):
 135         if not self.connected2:
 136             self.transport.loseConnection()
 137             return
 138         host = self.transport.getPeer().host
 139         #print 'addrme from', host, port
 140         if host == '127.0.0.1':
 141             if random.random() < .8 and self.node.peers:
 142                 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
 143         else:
 144             self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
 145             if random.random() < .8 and self.node.peers:
 146                 random.choice(self.node.peers.values()).send_addrs(addrs=[
 147                     dict(
 148                         address=dict(
 149                             services=self.other_services,
 150                             address=host,
 151                             port=port,
 152                         ),
 153                         timestamp=int(time.time()),
 154                     ),
 155                 ])
 156
 157     message_addrs = bitcoin_data.ComposedType([
 158         ('addrs', bitcoin_data.ListType(bitcoin_data.ComposedType([
 159             ('timestamp', bitcoin_data.StructType('<Q')),
 160             ('address', bitcoin_data.address_type),
 161         ]))),
 162     ])
 163     def handle_addrs(self, addrs):
 164         if not self.connected2:
 165             self.transport.loseConnection()
 166             return
 167         for addr_record in addrs:
 168             self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
 169             if random.random() < .8 and self.node.peers:
 170                 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
 171
 172     message_getaddrs = bitcoin_data.ComposedType([
 173         ('count', bitcoin_data.StructType('<I')),
 174     ])
 175     def handle_getaddrs(self, count):
 176         if not self.connected2:
 177             self.transport.loseConnection()
 178             return
 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 = bitcoin_data.ComposedType([
 194         ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
 195         ('parents', bitcoin_data.VarIntType()),
 196         ('stops', bitcoin_data.ListType(bitcoin_data.HashType())),
 197     ])
 198     def handle_getshares(self, hashes, parents, stops):
 199         if not self.connected2:
 200             self.transport.loseConnection()
 201             return
 202         self.node.handle_get_shares(hashes, parents, stops, self)
 203
 204     message_shares = bitcoin_data.ComposedType([
 205         ('shares', bitcoin_data.ListType(p2pool_data.share_type)),
 206     ])
 207     def handle_shares(self, shares):
 208         if not self.connected2:
 209             self.transport.loseConnection()
 210             return
 211         res = []
 212         for share in shares:
 213             share_obj = p2pool_data.Share.from_share(share, self.node.net)
 214             share_obj.peer = self
 215             res.append(share_obj)
 216         self.node.handle_shares(res)
 217
 218     def sendShares(self, shares, full=False):
 219         def att(f, **kwargs):
 220             try:
 221                 f(**kwargs)
 222             except bitcoin_p2p.TooLong:
 223                 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
 224                 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
 225         if shares:
 226             att(self.send_shares, shares=[share.as_share() for share in shares])
 227
 228     def connectionLost(self, reason):
 229         self.node.conns.remove(self)
 230         if self.connected2:
 231             self.node.lost_conn(self)
 232             self.connected2 = False
 233
 234 class ServerFactory(protocol.ServerFactory):
 235     def __init__(self, node):
 236         self.node = node
 237
 238     def buildProtocol(self, addr):
 239         if len(self.node.conns) >= self.node.max_conns:
 240             return None
 241         p = Protocol(self.node)
 242         p.factory = self
 243         return p
 244
 245 class ClientFactory(protocol.ClientFactory):
 246     def __init__(self, node):
 247         self.node = node
 248
 249     def buildProtocol(self, addr):
 250         p = Protocol(self.node)
 251         p.factory = self
 252         return p
 253
 254     def startedConnecting(self, connector):
 255         self.node.attempt_started(connector)
 256
 257     def clientConnectionFailed(self, connector, reason):
 258         self.node.attempt_failed(connector)
 259
 260     def clientConnectionLost(self, connector, reason):
 261         self.node.attempt_ended(connector)
 262
 263 class Node(object):
 264     def __init__(self, best_share_hash_func, port, net, addr_store={}, preferred_addrs=set(), desired_outgoing=10, max_outgoing_attempts=30, max_incomming=50, preferred_storage=1000):
 265         self.best_share_hash_func = best_share_hash_func
 266         self.port = port
 267         self.net = net
 268         self.addr_store = dict(addr_store)
 269         self.preferred_addrs = preferred_addrs
 270         self.desired_peers = desired_peers
 271         self.max_conns = max_conns
 272         self.max_attempts = max_attempts
 273         self.preferred_storage = preferred_storage
 274
 275         self.nonce = random.randrange(2**64)
 276         self.conns = set()
 277         self.attempts = {}
 278         self.peers = {}
 279         self.running = False
 280
 281     def start(self):
 282         if self.running:
 283             raise ValueError('already running')
 284
 285         self.running = True
 286
 287         self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
 288
 289         self._think()
 290         self._think2()
 291
 292     @defer.inlineCallbacks
 293     def _think(self):
 294         while self.running:
 295             try:
 296                 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
 297                     if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
 298                         host, port = random.choice(list(self.preferred_addrs))
 299                     else:
 300                         (host, port), = self.get_good_peers(1)
 301
 302                     if (host, port) not in self.attempts:
 303                         #print 'Trying to connect to', host, port
 304                         reactor.connectTCP(host, port, ClientFactory(self), timeout=5)
 305             except:
 306                 log.err()
 307
 308             yield deferral.sleep(random.expovariate(1/1))
 309
 310     @defer.inlineCallbacks
 311     def _think2(self):
 312         while self.running:
 313             try:
 314                 if len(self.addr_store) < self.preferred_storage and self.peers:
 315                     random.choice(self.peers.values()).send_getaddrs(count=8)
 316             except:
 317                 log.err()
 318
 319             yield deferral.sleep(random.expovariate(1/20))
 320
 321     def stop(self):
 322         if not self.running:
 323             raise ValueError('already stopped')
 324
 325         self.running = False
 326
 327         self.listen_port.stopListening()
 328
 329
 330     def attempt_started(self, connector):
 331         host, port = connector.getDestination().host, connector.getDestination().port
 332         if (host, port) in self.attempts:
 333             raise ValueError('already have attempt')
 334         self.attempts[host, port] = connector
 335
 336     def attempt_failed(self, connector):
 337         self.attempt_ended(connector)
 338
 339     def attempt_ended(self, connector):
 340         host, port = connector.getDestination().host, connector.getDestination().port
 341         if (host, port) not in self.attempts:
 342             raise ValueError('''don't have attempt''')
 343         if connector is not self.attempts[host, port]:
 344             raise ValueError('wrong connector')
 345         del self.attempts[host, port]
 346
 347
 348     def got_conn(self, conn):
 349         if conn.nonce in self.peers:
 350             raise ValueError('already have peer')
 351         self.peers[conn.nonce] = conn
 352
 353         print 'Connected to peer %s:%i. p2pool version: %i %r' % (conn.addr[0], conn.addr[1], conn.other_version, conn.other_sub_version)
 354
 355     def lost_conn(self, conn):
 356         if conn.nonce not in self.peers:
 357             raise ValueError('''don't have peer''')
 358         if conn is not self.peers[conn.nonce]:
 359             raise ValueError('wrong conn')
 360         del self.peers[conn.nonce]
 361
 362         print 'Lost peer %s:%i' % (conn.addr[0], conn.addr[1])
 363
 364
 365     def got_addr(self, (host, port), services, timestamp):
 366         if (host, port) in self.addr_store:
 367             old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
 368             self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
 369         else:
 370             self.addr_store[host, port] = services, timestamp, timestamp
 371
 372     def handle_shares(self, shares, peer):
 373         print 'handle_shares', (shares, peer)
 374
 375     def handle_share_hashes(self, hashes, peer):
 376         print 'handle_share_hashes', (hashes, peer)
 377
 378     def handle_get_shares(self, hashes, parents, stops, peer):
 379         print 'handle_get_shares', (hashes, parents, stops, peer)
 380
 381     def get_good_peers(self, max_count):
 382         t = time.time()
 383         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]
 384
 385 if __name__ == '__main__':
 386     p = random.randrange(2**15, 2**16)
 387     for i in xrange(5):
 388         p2 = random.randrange(2**15, 2**16)
 389         print p, p2
 390         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())))})
 391         n.start()
 392         p = p2
 393
 394     reactor.run()