1 from __future__ import division
6 from twisted.internet import defer, protocol, reactor
7 from twisted.python import log
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, pack
15 class Protocol(bitcoin_p2p.BaseProtocol):
16 def __init__(self, node, incoming):
17 bitcoin_p2p.BaseProtocol.__init__(self, node.net.PREFIX, 1000000)
19 self.incoming = incoming
21 self.other_version = None
22 self.connected2 = False
24 def connectionMade(self):
25 self.factory.proto_made_connection(self)
27 self.addr = self.transport.getPeer().host, self.transport.getPeer().port
34 address=self.transport.getPeer().host,
35 port=self.transport.getPeer().port,
39 address=self.transport.getHost().host,
40 port=self.transport.getHost().port,
42 nonce=self.node.nonce,
43 sub_version=p2pool.__version__,
45 best_share_hash=self.node.best_share_hash_func(),
48 reactor.callLater(10, self._connect_timeout)
49 self.timeout_delayed = reactor.callLater(100, self._timeout)
51 old_dataReceived = self.dataReceived
52 def new_dataReceived(data):
53 if not self.timeout_delayed.called:
54 self.timeout_delayed.reset(100)
55 old_dataReceived(data)
56 self.dataReceived = new_dataReceived
58 def _connect_timeout(self):
59 if not self.connected2 and self.transport.connected:
60 print 'Handshake timed out, disconnecting from %s:%i' % self.addr
61 self.transport.loseConnection()
63 def packetReceived(self, command, payload2):
64 if command != 'version' and not self.connected2:
65 self.transport.loseConnection()
68 bitcoin_p2p.BaseProtocol.packetReceived(self, command, payload2)
70 def badPeerHappened(self):
71 self.transport.loseConnection()
72 self.node.bans[self.transport.getPeer().host] = time.time() + 60*60
75 if self.transport.connected:
76 print 'Connection timed out, disconnecting from %s:%i' % self.addr
77 self.transport.loseConnection()
79 @defer.inlineCallbacks
81 while self.connected2:
83 yield deferral.sleep(random.expovariate(1/100))
85 @defer.inlineCallbacks
87 while self.connected2:
88 self.send_addrme(port=self.node.port)
89 #print 'sending addrme'
90 yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1)))
92 message_version = pack.ComposedType([
93 ('version', pack.IntType(32)),
94 ('services', pack.IntType(64)),
95 ('addr_to', bitcoin_data.address_type),
96 ('addr_from', bitcoin_data.address_type),
97 ('nonce', pack.IntType(64)),
98 ('sub_version', pack.VarStrType()),
99 ('mode', pack.IntType(32)), # always 1 for legacy compatibility
100 ('best_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
102 def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
103 if self.other_version is not None or version < 2:
104 self.transport.loseConnection()
107 self.other_version = version
108 self.other_sub_version = sub_version[:512]
109 self.other_services = services
111 if nonce == self.node.nonce:
112 #print 'Detected connection to self, disconnecting from %s:%i' % self.addr
113 self.transport.loseConnection()
115 if nonce in self.node.peers:
116 #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr
117 self.transport.loseConnection()
121 self.connected2 = True
122 self.factory.proto_connected(self)
127 if best_share_hash is not None:
128 self.node.handle_share_hashes([best_share_hash], self)
130 message_ping = pack.ComposedType([])
131 def handle_ping(self):
134 message_addrme = pack.ComposedType([
135 ('port', pack.IntType(16)),
137 def handle_addrme(self, port):
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...
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=[
149 services=self.other_services,
153 timestamp=int(time.time()),
157 message_addrs = pack.ComposedType([
158 ('addrs', pack.ListType(pack.ComposedType([
159 ('timestamp', pack.IntType(64)),
160 ('address', bitcoin_data.address_type),
163 def handle_addrs(self, addrs):
164 for addr_record in addrs:
165 self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
166 if random.random() < .8 and self.node.peers:
167 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
169 message_getaddrs = pack.ComposedType([
170 ('count', pack.IntType(32)),
172 def handle_getaddrs(self, count):
175 self.send_addrs(addrs=[
177 timestamp=self.node.addr_store[host, port][2],
179 services=self.node.addr_store[host, port][0],
184 self.node.get_good_peers(count)
187 message_getshares = pack.ComposedType([
188 ('hashes', pack.ListType(pack.IntType(256))),
189 ('parents', pack.VarIntType()),
190 ('stops', pack.ListType(pack.IntType(256))),
192 def handle_getshares(self, hashes, parents, stops):
193 self.node.handle_get_shares(hashes, parents, stops, self)
195 message_shares = pack.ComposedType([
196 ('shares', pack.ListType(p2pool_data.share_type)),
198 def handle_shares(self, shares):
199 self.node.handle_shares([p2pool_data.Share.from_share(share, self.node.net, self) for share in shares], self)
201 def sendShares(self, shares):
202 def att(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()))
209 att(self.send_shares, shares=[share.as_share() for share in shares])
211 def connectionLost(self, reason):
213 self.factory.proto_disconnected(self, reason)
214 self.connected2 = False
215 self.factory.proto_lost_connection(self, reason)
217 class ServerFactory(protocol.ServerFactory):
218 def __init__(self, node, max_conns):
220 self.max_conns = max_conns
225 def buildProtocol(self, addr):
226 if sum(self.conns.itervalues()) >= self.max_conns or self.conns.get(self._host_to_ident(addr.host), 0) >= 3:
228 if addr.host in self.node.bans and self.node.bans[addr.host] > time.time():
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():
258 self.listen_port = reactor.listenTCP(self.node.port, self)
259 deferral.retry('Error binding to P2P port:', traceback=False)(attempt_listen)()
265 self.listen_port.stopListening()
267 class ClientFactory(protocol.ClientFactory):
268 def __init__(self, node, desired_conns, max_attempts):
270 self.desired_conns = desired_conns
271 self.max_attempts = max_attempts
273 self.attempts = set()
277 def _host_to_ident(self, host):
278 a, b, c, d = host.split('.')
281 def buildProtocol(self, addr):
282 p = Protocol(self.node, False)
286 def startedConnecting(self, connector):
287 ident = self._host_to_ident(connector.getDestination().host)
288 if ident in self.attempts:
289 raise AssertionError('already have attempt')
290 self.attempts.add(ident)
292 def clientConnectionFailed(self, connector, reason):
293 self.attempts.remove(self._host_to_ident(connector.getDestination().host))
295 def clientConnectionLost(self, connector, reason):
296 self.attempts.remove(self._host_to_ident(connector.getDestination().host))
298 def proto_made_connection(self, proto):
300 def proto_lost_connection(self, proto, reason):
303 def proto_connected(self, proto):
304 self.conns.add(proto)
305 self.node.got_conn(proto)
306 def proto_disconnected(self, proto, reason):
307 self.conns.remove(proto)
308 self.node.lost_conn(proto, reason)
311 assert not self.running
318 @defer.inlineCallbacks
322 if len(self.conns) < self.desired_conns and len(self.attempts) < self.max_attempts and self.node.addr_store:
323 (host, port), = self.node.get_good_peers(1)
325 if self._host_to_ident(host) in self.attempts:
327 elif host in self.node.bans and self.node.bans[host] > time.time():
330 #print 'Trying to connect to', host, port
331 reactor.connectTCP(host, port, self, timeout=5)
335 yield deferral.sleep(random.expovariate(1/1))
337 class SingleClientFactory(protocol.ReconnectingClientFactory):
338 def __init__(self, node):
341 def buildProtocol(self, addr):
342 p = Protocol(self.node, incoming=False)
346 def proto_made_connection(self, proto):
348 def proto_lost_connection(self, proto, reason):
351 def proto_connected(self, proto):
353 self.node.got_conn(proto)
354 def proto_disconnected(self, proto, reason):
355 self.node.lost_conn(proto, reason)
358 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):
359 self.best_share_hash_func = best_share_hash_func
362 self.addr_store = dict(addr_store)
363 self.connect_addrs = connect_addrs
364 self.preferred_storage = preferred_storage
366 self.nonce = random.randrange(2**64)
368 self.bans = {} # address -> end_time
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())))})