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.handle_share0s(hashes=[best_share_hash])
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_share0s = bitcoin_data.ComposedType([
185 ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
187 def handle_share0s(self, hashes):
188 self.node.handle_share_hashes(hashes, self)
190 message_share1as = bitcoin_data.ComposedType([
191 ('share1as', bitcoin_data.ListType(p2pool_data.share1a_type)),
193 def handle_share1as(self, share1as):
195 for share1a in share1as:
196 # use scrypt for Litecoin
197 if (getattr(self.node.net, 'BITCOIN_POW_SCRYPT', False)):
198 hash_ = bitcoin_data.block_header_type.scrypt(share1a['header']);
200 hash_ = bitcoin_data.block_header_type.hash256(share1a['header'])
201 if hash_ <= share1a['header']['target']:
202 print 'Dropping peer %s:%i due to invalid share' % self.addr
203 self.transport.loseConnection()
205 share = p2pool_data.Share.from_share1a(share1a, self.node.net)
206 share.peer = self # XXX
208 self.node.handle_shares(shares, self)
210 message_share1bs = bitcoin_data.ComposedType([
211 ('share1bs', bitcoin_data.ListType(p2pool_data.share1b_type)),
213 def handle_share1bs(self, share1bs):
215 for share1b in share1bs:
216 # use scrypt for Litecoin
217 if (getattr(self.node.net, 'BITCOIN_POW_SCRYPT', False)):
218 hash_ = bitcoin_data.block_header_type.scrypt(share1b['header']);
220 hash_ = bitcoin_data.block_header_type.hash256(share1b['header'])
221 if not hash_ <= share1b['header']['target']:
222 print 'Dropping peer %s:%i due to invalid share' % self.addr
223 self.transport.loseConnection()
225 share = p2pool_data.Share.from_share1b(share1b, self.node.net)
226 share.peer = self # XXX
228 self.node.handle_shares(shares, self)
230 def send_shares(self, shares):
234 # XXX doesn't need to send full block when it's not urgent
235 # eg. when getting history
237 if share.bitcoin_hash <= share.header['target']:
238 share1bs.append(share.as_share1b())
240 share1as.append(share.as_share1a())
241 def att(f, **kwargs):
244 except bitcoin_p2p.TooLong:
245 att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
246 att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
247 if share1bs: att(self.send_share1bs, share1bs=share1bs)
248 if share0s: att(self.send_share0s, hashes=share0s)
249 if share1as: att(self.send_share1as, share1as=share1as)
251 def connectionLost(self, reason):
253 self.node.lost_conn(self)
255 class ServerFactory(protocol.ServerFactory):
256 def __init__(self, node):
259 def buildProtocol(self, addr):
260 p = Protocol(self.node)
264 class ClientFactory(protocol.ClientFactory):
265 def __init__(self, node):
268 def buildProtocol(self, addr):
269 p = Protocol(self.node)
273 def startedConnecting(self, connector):
274 self.node.attempt_started(connector)
276 def clientConnectionFailed(self, connector, reason):
277 self.node.attempt_failed(connector)
279 def clientConnectionLost(self, connector, reason):
280 self.node.attempt_ended(connector)
282 addrdb_key = bitcoin_data.ComposedType([
283 ('address', bitcoin_data.IPV6AddressType()),
284 ('port', bitcoin_data.StructType('>H')),
286 addrdb_value = bitcoin_data.ComposedType([
287 ('services', bitcoin_data.StructType('<Q')),
288 ('first_seen', bitcoin_data.StructType('<Q')),
289 ('last_seen', bitcoin_data.StructType('<Q')),
292 class AddrStore(dicts.DictWrapper):
293 def encode_key(self, (address, port)):
294 return addrdb_key.pack(dict(address=address, port=port))
295 def decode_key(self, encoded_key):
296 k = addrdb_key.unpack(encoded_key)
297 return k['address'], k['port']
299 def encode_value(self, (services, first_seen, last_seen)):
300 return addrdb_value.pack(dict(services=services, first_seen=first_seen, last_seen=last_seen))
301 def decode_value(self, encoded_value):
302 v = addrdb_value.unpack(encoded_value)
303 return v['services'], v['first_seen'], v['last_seen']
306 def __init__(self, current_work, port, net, addr_store=None, preferred_addrs=set(), desired_peers=10, max_attempts=100, preferred_storage=1000):
307 if addr_store is None:
312 self.addr_store = AddrStore(addr_store)
313 self.preferred_addrs = preferred_addrs
314 self.desired_peers = desired_peers
315 self.max_attempts = max_attempts
316 self.current_work = current_work
317 self.preferred_storage = preferred_storage
319 self.nonce = random.randrange(2**64)
326 raise ValueError('already running')
330 self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
335 @defer.inlineCallbacks
339 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
340 if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
341 host, port = random.choice(list(self.preferred_addrs))
343 host, port = random.choice(self.addr_store.keys())
345 if (host, port) not in self.attempts:
346 #print 'Trying to connect to', host, port
347 reactor.connectTCP(host, port, ClientFactory(self), timeout=10)
351 yield deferral.sleep(random.expovariate(1/5))
353 @defer.inlineCallbacks
357 if len(self.addr_store) < self.preferred_storage and self.peers:
358 random.choice(self.peers.values()).send_getaddrs(count=8)
362 yield deferral.sleep(random.expovariate(1/20))
366 raise ValueError('already stopped')
370 self.listen_port.stopListening()
373 def attempt_started(self, connector):
374 host, port = connector.getDestination().host, connector.getDestination().port
375 if (host, port) in self.attempts:
376 raise ValueError('already have attempt')
377 self.attempts[host, port] = connector
379 def attempt_failed(self, connector):
380 self.attempt_ended(connector)
382 def attempt_ended(self, connector):
383 host, port = connector.getDestination().host, connector.getDestination().port
384 if (host, port) not in self.attempts:
385 raise ValueError('''don't have attempt''')
386 if connector is not self.attempts[host, port]:
387 raise ValueError('wrong connector')
388 del self.attempts[host, port]
391 def got_conn(self, conn):
392 if conn.nonce in self.peers:
393 raise ValueError('already have peer')
394 self.peers[conn.nonce] = conn
396 print 'Connected to peer %s:%i. p2pool version: %r' % (conn.addr[0], conn.addr[1], conn.other_sub_version)
398 def lost_conn(self, conn):
399 if conn.nonce not in self.peers:
400 raise ValueError('''don't have peer''')
401 if conn is not self.peers[conn.nonce]:
402 raise ValueError('wrong conn')
403 del self.peers[conn.nonce]
405 print 'Lost peer %s:%i' % (conn.addr[0], conn.addr[1])
408 def got_addr(self, (host, port), services, timestamp):
409 if (host, port) in self.addr_store:
410 old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
411 self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
413 self.addr_store[host, port] = services, timestamp, timestamp
415 def handle_shares(self, shares, peer):
416 print 'handle_shares', (shares, peer)
418 def handle_share_hashes(self, hashes, peer):
419 print 'handle_share_hashes', (hashes, peer)
421 def handle_get_shares(self, hashes, parents, stops, peer):
422 print 'handle_get_shares', (hashes, parents, stops, peer)
424 if __name__ == '__main__':
425 p = random.randrange(2**15, 2**16)
427 p2 = random.randrange(2**15, 2**16)
429 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())))})