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, variable, dicts
15 class Protocol(bitcoin_p2p.BaseProtocol):
17 sub_version = p2pool.__version__
19 def __init__(self, node):
22 self._prefix = self.node.net.PREFIX
24 max_payload_length = 1000000
30 def connectionMade(self):
31 bitcoin_p2p.BaseProtocol.connectionMade(self)
33 self.addr = self.transport.getPeer().host, self.transport.getPeer().port
40 address=self.transport.getPeer().host,
41 port=self.transport.getPeer().port,
45 address=self.transport.getHost().host,
46 port=self.transport.getHost().port,
48 nonce=self.node.nonce,
49 sub_version=self.sub_version,
51 best_share_hash=self.node.current_work.value['best_share_hash'],
54 reactor.callLater(10, self._connect_timeout)
55 self.timeout_delayed = reactor.callLater(100, self._timeout)
57 def _connect_timeout(self):
58 if not self.connected2 and self.transport.connected:
59 print 'Handshake timed out, disconnecting from %s:%i' % self.addr
60 self.transport.loseConnection()
63 if not self.timeout_delayed.called:
64 self.timeout_delayed.cancel()
65 self.timeout_delayed = reactor.callLater(100, self._timeout)
68 if self.transport.connected:
69 print 'Connection timed out, disconnecting from %s:%i' % self.addr
70 self.transport.loseConnection()
72 @defer.inlineCallbacks
74 while self.connected2:
76 yield deferral.sleep(random.expovariate(1/100))
78 @defer.inlineCallbacks
80 while self.connected2:
81 self.send_addrme(port=self.node.port)
82 #print 'sending addrme'
83 yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1)))
85 message_version = bitcoin_data.ComposedType([
86 ('version', bitcoin_data.StructType('<I')),
87 ('services', bitcoin_data.StructType('<Q')),
88 ('addr_to', bitcoin_data.address_type),
89 ('addr_from', bitcoin_data.address_type),
90 ('nonce', bitcoin_data.StructType('<Q')),
91 ('sub_version', bitcoin_data.VarStrType()),
92 ('mode', bitcoin_data.StructType('<I')), # always 1 for legacy compatibility
93 ('best_share_hash', bitcoin_data.PossiblyNoneType(0, bitcoin_data.HashType())),
95 def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
96 self.other_version = version
97 self.other_sub_version = sub_version[:512]
98 self.other_services = services
100 if nonce == self.node.nonce:
101 #print 'Detected connection to self, disconnecting from %s:%i' % self.addr
102 self.transport.loseConnection()
104 if nonce in self.node.peers:
105 #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr
106 self.transport.loseConnection()
110 self.connected2 = True
111 self.node.got_conn(self)
116 if best_share_hash is not None:
117 self.node.handle_share_hashes([best_share_hash], self)
119 message_ping = bitcoin_data.ComposedType([])
120 def handle_ping(self):
123 message_addrme = bitcoin_data.ComposedType([
124 ('port', bitcoin_data.StructType('<H')),
126 def handle_addrme(self, port):
127 host = self.transport.getPeer().host
128 #print 'addrme from', host, port
129 if host == '127.0.0.1':
130 if random.random() < .8 and self.node.peers:
131 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
133 self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
134 if random.random() < .8 and self.node.peers:
135 random.choice(self.node.peers.values()).send_addrs(addrs=[
138 services=self.other_services,
142 timestamp=int(time.time()),
146 message_addrs = bitcoin_data.ComposedType([
147 ('addrs', bitcoin_data.ListType(bitcoin_data.ComposedType([
148 ('timestamp', bitcoin_data.StructType('<Q')),
149 ('address', bitcoin_data.address_type),
152 def handle_addrs(self, addrs):
153 for addr_record in addrs:
154 self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
155 if random.random() < .8 and self.node.peers:
156 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
158 message_getaddrs = bitcoin_data.ComposedType([
159 ('count', bitcoin_data.StructType('<I')),
161 def handle_getaddrs(self, count):
164 self.send_addrs(addrs=[
166 timestamp=self.node.addr_store[host, port][2],
168 services=self.node.addr_store[host, port][0],
173 random.sample(self.node.addr_store.keys(), min(count, len(self.node.addr_store)))
176 message_getshares = bitcoin_data.ComposedType([
177 ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
178 ('parents', bitcoin_data.VarIntType()),
179 ('stops', bitcoin_data.ListType(bitcoin_data.HashType())),
181 def handle_getshares(self, hashes, parents, stops):
182 self.node.handle_get_shares(hashes, parents, stops, self)
184 message_share1as = bitcoin_data.ComposedType([
185 ('share1as', bitcoin_data.ListType(p2pool_data.share1a_type)),
187 def handle_share1as(self, share1as):
189 for share1a in share1as:
190 # use scrypt for Litecoin
191 if (getattr(self.node.net, 'BITCOIN_POW_SCRYPT', False)):
192 hash_ = bitcoin_data.block_header_type.scrypt(share1a['header']);
194 hash_ = bitcoin_data.block_header_type.hash256(share1a['header'])
195 if hash_ <= share1a['header']['target']:
196 print 'Dropping peer %s:%i due to invalid share' % self.addr
197 self.transport.loseConnection()
199 share = p2pool_data.Share.from_share1a(share1a, self.node.net)
200 share.peer = self # XXX
202 self.node.handle_shares(shares, self)
204 message_share1bs = bitcoin_data.ComposedType([
205 ('share1bs', bitcoin_data.ListType(p2pool_data.share1b_type)),
207 def handle_share1bs(self, share1bs):
209 for share1b in share1bs:
210 # use scrypt for Litecoin
211 if (getattr(self.node.net, 'BITCOIN_POW_SCRYPT', False)):
212 hash_ = bitcoin_data.block_header_type.scrypt(share1b['header']);
214 hash_ = bitcoin_data.block_header_type.hash256(share1b['header'])
215 if not hash_ <= share1b['header']['target']:
216 print 'Dropping peer %s:%i due to invalid share' % self.addr
217 self.transport.loseConnection()
219 share = p2pool_data.Share.from_share1b(share1b, self.node.net)
220 share.peer = self # XXX
222 self.node.handle_shares(shares, self)
224 def send_shares(self, shares):
227 # XXX doesn't need to send full block when it's not urgent
228 # eg. when getting history
230 if share.bitcoin_hash <= share.header['target']:
231 share1bs.append(share.as_share1b())
233 share1as.append(share.as_share1a())
234 def att(f, **kwargs):
237 except bitcoin_p2p.TooLong:
238 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
239 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
240 if share1bs: att(self.send_share1bs, share1bs=share1bs)
241 if share1as: att(self.send_share1as, share1as=share1as)
243 def connectionLost(self, reason):
245 self.node.lost_conn(self)
247 class ServerFactory(protocol.ServerFactory):
248 def __init__(self, node):
251 def buildProtocol(self, addr):
252 p = Protocol(self.node)
256 class ClientFactory(protocol.ClientFactory):
257 def __init__(self, node):
260 def buildProtocol(self, addr):
261 p = Protocol(self.node)
265 def startedConnecting(self, connector):
266 self.node.attempt_started(connector)
268 def clientConnectionFailed(self, connector, reason):
269 self.node.attempt_failed(connector)
271 def clientConnectionLost(self, connector, reason):
272 self.node.attempt_ended(connector)
274 addrdb_key = bitcoin_data.ComposedType([
275 ('address', bitcoin_data.IPV6AddressType()),
276 ('port', bitcoin_data.StructType('>H')),
278 addrdb_value = bitcoin_data.ComposedType([
279 ('services', bitcoin_data.StructType('<Q')),
280 ('first_seen', bitcoin_data.StructType('<Q')),
281 ('last_seen', bitcoin_data.StructType('<Q')),
284 class AddrStore(dicts.DictWrapper):
285 def encode_key(self, (address, port)):
286 return addrdb_key.pack(dict(address=address, port=port))
287 def decode_key(self, encoded_key):
288 k = addrdb_key.unpack(encoded_key)
289 return k['address'], k['port']
291 def encode_value(self, (services, first_seen, last_seen)):
292 return addrdb_value.pack(dict(services=services, first_seen=first_seen, last_seen=last_seen))
293 def decode_value(self, encoded_value):
294 v = addrdb_value.unpack(encoded_value)
295 return v['services'], v['first_seen'], v['last_seen']
298 def __init__(self, current_work, port, net, addr_store=None, preferred_addrs=set(), desired_peers=10, max_attempts=100, preferred_storage=1000):
299 if addr_store is None:
304 self.addr_store = AddrStore(addr_store)
305 self.preferred_addrs = preferred_addrs
306 self.desired_peers = desired_peers
307 self.max_attempts = max_attempts
308 self.current_work = current_work
309 self.preferred_storage = preferred_storage
311 self.nonce = random.randrange(2**64)
318 raise ValueError('already running')
322 self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
327 @defer.inlineCallbacks
331 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
332 if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
333 host, port = random.choice(list(self.preferred_addrs))
335 host, port = random.choice(self.addr_store.keys())
337 if (host, port) not in self.attempts:
338 #print 'Trying to connect to', host, port
339 reactor.connectTCP(host, port, ClientFactory(self), timeout=10)
343 yield deferral.sleep(random.expovariate(1/5))
345 @defer.inlineCallbacks
349 if len(self.addr_store) < self.preferred_storage and self.peers:
350 random.choice(self.peers.values()).send_getaddrs(count=8)
354 yield deferral.sleep(random.expovariate(1/20))
358 raise ValueError('already stopped')
362 self.listen_port.stopListening()
365 def attempt_started(self, connector):
366 host, port = connector.getDestination().host, connector.getDestination().port
367 if (host, port) in self.attempts:
368 raise ValueError('already have attempt')
369 self.attempts[host, port] = connector
371 def attempt_failed(self, connector):
372 self.attempt_ended(connector)
374 def attempt_ended(self, connector):
375 host, port = connector.getDestination().host, connector.getDestination().port
376 if (host, port) not in self.attempts:
377 raise ValueError('''don't have attempt''')
378 if connector is not self.attempts[host, port]:
379 raise ValueError('wrong connector')
380 del self.attempts[host, port]
383 def got_conn(self, conn):
384 if conn.nonce in self.peers:
385 raise ValueError('already have peer')
386 self.peers[conn.nonce] = conn
388 print 'Connected to peer %s:%i. p2pool version: %r' % (conn.addr[0], conn.addr[1], conn.other_sub_version)
390 def lost_conn(self, conn):
391 if conn.nonce not in self.peers:
392 raise ValueError('''don't have peer''')
393 if conn is not self.peers[conn.nonce]:
394 raise ValueError('wrong conn')
395 del self.peers[conn.nonce]
397 print 'Lost peer %s:%i' % (conn.addr[0], conn.addr[1])
400 def got_addr(self, (host, port), services, timestamp):
401 if (host, port) in self.addr_store:
402 old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
403 self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
405 self.addr_store[host, port] = services, timestamp, timestamp
407 def handle_shares(self, shares, peer):
408 print 'handle_shares', (shares, peer)
410 def handle_share_hashes(self, hashes, peer):
411 print 'handle_share_hashes', (hashes, peer)
413 def handle_get_shares(self, hashes, parents, stops, peer):
414 print 'handle_get_shares', (hashes, parents, stops, peer)
416 if __name__ == '__main__':
417 p = random.randrange(2**15, 2**16)
419 p2 = random.randrange(2**15, 2**16)
421 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())))})