1 from __future__ import division
7 from twisted.internet import defer, error, protocol, reactor
8 from twisted.python import log
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
16 class Protocol(bitcoin_p2p.BaseProtocol):
17 def __init__(self, node, incoming):
18 bitcoin_p2p.BaseProtocol.__init__(self, node.net.PREFIX, 1000000)
20 self.incoming = incoming
22 self.other_version = None
23 self.connected2 = False
25 def connectionMade(self):
26 self.factory.proto_made_connection(self)
28 self.addr = self.transport.getPeer().host, self.transport.getPeer().port
35 address=self.transport.getPeer().host,
36 port=self.transport.getPeer().port,
40 address=self.transport.getHost().host,
41 port=self.transport.getHost().port,
43 nonce=self.node.nonce,
44 sub_version=p2pool.__version__,
46 best_share_hash=self.node.best_share_hash_func(),
49 reactor.callLater(10, self._connect_timeout)
50 self.timeout_delayed = reactor.callLater(100, self._timeout)
52 old_dataReceived = self.dataReceived
53 def new_dataReceived(data):
54 if not self.timeout_delayed.called:
55 self.timeout_delayed.reset(100)
56 old_dataReceived(data)
57 self.dataReceived = new_dataReceived
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()
64 def packetReceived(self, command, payload2):
65 if command != 'version' and not self.connected2:
66 self.transport.loseConnection()
69 bitcoin_p2p.BaseProtocol.packetReceived(self, command, payload2)
72 if self.transport.connected:
73 print 'Connection timed out, disconnecting from %s:%i' % self.addr
74 self.transport.loseConnection()
76 @defer.inlineCallbacks
78 while self.connected2:
80 yield deferral.sleep(random.expovariate(1/100))
82 @defer.inlineCallbacks
84 while self.connected2:
85 self.send_addrme(port=self.node.port)
86 #print 'sending addrme'
87 yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1)))
89 message_version = pack.ComposedType([
90 ('version', pack.IntType(32)),
91 ('services', pack.IntType(64)),
92 ('addr_to', bitcoin_data.address_type),
93 ('addr_from', bitcoin_data.address_type),
94 ('nonce', pack.IntType(64)),
95 ('sub_version', pack.VarStrType()),
96 ('mode', pack.IntType(32)), # always 1 for legacy compatibility
97 ('best_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
99 def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
100 if self.other_version is not None or version < 2:
101 self.transport.loseConnection()
104 self.other_version = version
105 self.other_sub_version = sub_version[:512]
106 self.other_services = services
108 if nonce == self.node.nonce:
109 #print 'Detected connection to self, disconnecting from %s:%i' % self.addr
110 self.transport.loseConnection()
112 if nonce in self.node.peers:
113 #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr
114 self.transport.loseConnection()
118 self.connected2 = True
119 self.factory.proto_connected(self)
124 if best_share_hash is not None:
125 self.node.handle_share_hashes([best_share_hash], self)
127 message_ping = pack.ComposedType([])
128 def handle_ping(self):
131 message_addrme = pack.ComposedType([
132 ('port', pack.IntType(16)),
134 def handle_addrme(self, port):
135 host = self.transport.getPeer().host
136 #print 'addrme from', host, port
137 if host == '127.0.0.1':
138 if random.random() < .8 and self.node.peers:
139 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
141 self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
142 if random.random() < .8 and self.node.peers:
143 random.choice(self.node.peers.values()).send_addrs(addrs=[
146 services=self.other_services,
150 timestamp=int(time.time()),
154 message_addrs = pack.ComposedType([
155 ('addrs', pack.ListType(pack.ComposedType([
156 ('timestamp', pack.IntType(64)),
157 ('address', bitcoin_data.address_type),
160 def handle_addrs(self, addrs):
161 for addr_record in addrs:
162 self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
163 if random.random() < .8 and self.node.peers:
164 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
166 message_getaddrs = pack.ComposedType([
167 ('count', pack.IntType(32)),
169 def handle_getaddrs(self, count):
172 self.send_addrs(addrs=[
174 timestamp=self.node.addr_store[host, port][2],
176 services=self.node.addr_store[host, port][0],
181 self.node.get_good_peers(count)
184 message_getshares = pack.ComposedType([
185 ('hashes', pack.ListType(pack.IntType(256))),
186 ('parents', pack.VarIntType()),
187 ('stops', pack.ListType(pack.IntType(256))),
189 def handle_getshares(self, hashes, parents, stops):
190 self.node.handle_get_shares(hashes, parents, stops, self)
192 message_shares = pack.ComposedType([
193 ('shares', pack.ListType(p2pool_data.share_type)),
195 def handle_shares(self, shares):
198 share_obj = p2pool_data.Share.from_share(share, self.node.net)
199 share_obj.peer = self
200 res.append(share_obj)
201 self.node.handle_shares(res, self)
203 def sendShares(self, shares, full=False):
204 def att(f, **kwargs):
207 except bitcoin_p2p.TooLong:
208 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
209 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
211 att(self.send_shares, shares=[share.as_share() for share in shares])
213 def connectionLost(self, reason):
215 self.factory.proto_disconnected(self, reason)
216 self.connected2 = False
217 self.factory.proto_lost_connection(self, reason)
219 class ServerFactory(protocol.ServerFactory):
220 def __init__(self, node, max_conns):
222 self.max_conns = max_conns
227 def buildProtocol(self, addr):
228 if sum(self.conns.itervalues()) >= self.max_conns or self.conns.get(self._host_to_ident(addr.host), 0) >= 3:
230 p = Protocol(self.node, True)
234 def _host_to_ident(self, host):
235 a, b, c, d = host.split('.')
238 def proto_made_connection(self, proto):
239 ident = self._host_to_ident(proto.transport.getPeer().host)
240 self.conns[ident] = self.conns.get(ident, 0) + 1
241 def proto_lost_connection(self, proto, reason):
242 ident = self._host_to_ident(proto.transport.getPeer().host)
243 self.conns[ident] -= 1
244 if not self.conns[ident]:
245 del self.conns[ident]
247 def proto_connected(self, proto):
248 self.node.got_conn(proto)
249 def proto_disconnected(self, proto, reason):
250 self.node.lost_conn(proto, reason)
253 assert not self.running
256 def attempt_listen():
260 self.listen_port = reactor.listenTCP(self.node.port, self)
261 except error.CannotListenError, e:
262 print >>sys.stderr, 'Error binding to P2P port: %s. Retrying in 3 seconds.' % (e.socketError,)
263 reactor.callLater(3, attempt_listen)
270 self.listen_port.stopListening()
272 class ClientFactory(protocol.ClientFactory):
273 def __init__(self, node, desired_conns, max_attempts):
275 self.desired_conns = desired_conns
276 self.max_attempts = max_attempts
278 self.attempts = set()
282 def _host_to_ident(self, host):
283 a, b, c, d = host.split('.')
286 def buildProtocol(self, addr):
287 p = Protocol(self.node, False)
291 def startedConnecting(self, connector):
292 ident = self._host_to_ident(connector.getDestination().host)
293 if ident in self.attempts:
294 raise AssertionError('already have attempt')
295 self.attempts.add(ident)
297 def clientConnectionFailed(self, connector, reason):
298 self.attempts.remove(self._host_to_ident(connector.getDestination().host))
300 def clientConnectionLost(self, connector, reason):
301 self.attempts.remove(self._host_to_ident(connector.getDestination().host))
303 def proto_made_connection(self, proto):
305 def proto_lost_connection(self, proto, reason):
308 def proto_connected(self, proto):
309 self.conns.add(proto)
310 self.node.got_conn(proto)
311 def proto_disconnected(self, proto, reason):
312 self.conns.remove(proto)
313 self.node.lost_conn(proto, reason)
316 assert not self.running
323 @defer.inlineCallbacks
327 if len(self.conns) < self.desired_conns and len(self.attempts) < self.max_attempts and self.node.addr_store:
328 (host, port), = self.node.get_good_peers(1)
330 if self._host_to_ident(host) not in self.attempts:
331 #print 'Trying to connect to', host, port
332 reactor.connectTCP(host, port, self, timeout=5)
336 yield deferral.sleep(random.expovariate(1/1))
338 class SingleClientFactory(protocol.ReconnectingClientFactory):
339 def __init__(self, node):
342 def buildProtocol(self, addr):
343 p = Protocol(self.node, incoming=False)
347 def proto_made_connection(self, proto):
349 def proto_lost_connection(self, proto, reason):
352 def proto_connected(self, proto):
354 self.node.got_conn(proto)
355 def proto_disconnected(self, proto, reason):
356 self.node.lost_conn(proto, reason)
359 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):
360 self.best_share_hash_func = best_share_hash_func
363 self.addr_store = dict(addr_store)
364 self.connect_addrs = connect_addrs
365 self.preferred_storage = preferred_storage
367 self.nonce = random.randrange(2**64)
369 self.clientfactory = ClientFactory(self, desired_outgoing_conns, max_outgoing_attempts)
370 self.serverfactory = ServerFactory(self, max_incoming_conns)
375 raise ValueError('already running')
377 self.clientfactory.start()
378 self.serverfactory.start()
379 self.singleclientconnectors = [reactor.connectTCP(addr, port, SingleClientFactory(self)) for addr, port in self.connect_addrs]
385 @defer.inlineCallbacks
389 if len(self.addr_store) < self.preferred_storage and self.peers:
390 random.choice(self.peers.values()).send_getaddrs(count=8)
394 yield deferral.sleep(random.expovariate(1/20))
398 raise ValueError('already stopped')
402 self.clientfactory.stop()
403 self.serverfactory.stop()
404 for singleclientconnector in self.singleclientconnectors:
405 singleclientconnector.factory.stopTrying() # XXX will this disconnect a current connection?
406 del self.singleclientconnectors
408 def got_conn(self, conn):
409 if conn.nonce in self.peers:
410 raise ValueError('already have peer')
411 self.peers[conn.nonce] = conn
413 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 def lost_conn(self, conn, reason):
416 if conn.nonce not in self.peers:
417 raise ValueError('''don't have peer''')
418 if conn is not self.peers[conn.nonce]:
419 raise ValueError('wrong conn')
420 del self.peers[conn.nonce]
422 print 'Lost peer %s:%i - %s' % (conn.addr[0], conn.addr[1], reason.getErrorMessage())
425 def got_addr(self, (host, port), services, timestamp):
426 if (host, port) in self.addr_store:
427 old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
428 self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
430 self.addr_store[host, port] = services, timestamp, timestamp
432 def handle_shares(self, shares, peer):
433 print 'handle_shares', (shares, peer)
435 def handle_share_hashes(self, hashes, peer):
436 print 'handle_share_hashes', (hashes, peer)
438 def handle_get_shares(self, hashes, parents, stops, peer):
439 print 'handle_get_shares', (hashes, parents, stops, peer)
441 def get_good_peers(self, max_count):
443 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 if __name__ == '__main__':
446 p = random.randrange(2**15, 2**16)
448 p2 = random.randrange(2**15, 2**16)
450 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())))})