1 from __future__ import division
7 from twisted.internet import defer, protocol, reactor
15 # 0: send hash first (high latency, low bandwidth)
16 # 1: send entire share (low latency, high bandwidth)
18 class Protocol(bitcoin_p2p.BaseProtocol):
22 def __init__(self, node):
26 self._prefix = 'f77cea5d16a2183f'.decode('hex')
28 self._prefix = '95ec1eda53c5e716'.decode('hex')
33 'version': bitcoin_p2p.ComposedType([
34 ('version', bitcoin_p2p.StructType('<I')),
35 ('services', bitcoin_p2p.StructType('<Q')),
36 ('addr_to', bitcoin_p2p.address),
37 ('addr_from', bitcoin_p2p.address),
38 ('nonce', bitcoin_p2p.StructType('<Q')),
39 ('sub_version', bitcoin_p2p.VarStrType()),
40 ('mode', bitcoin_p2p.StructType('<I')),
41 ('state', bitcoin_p2p.ComposedType([
42 ('chain_id', p2pool.chain_id_type),
43 ('highest', bitcoin_p2p.ComposedType([
44 ('hash', bitcoin_p2p.HashType()),
45 ('height', bitcoin_p2p.StructType('<Q')),
50 'update_mode': bitcoin_p2p.ComposedType([
51 ('mode', bitcoin_p2p.StructType('<I')),
54 'ping': bitcoin_p2p.ComposedType([]),
56 'addrme': bitcoin_p2p.ComposedType([
57 ('port', bitcoin_p2p.StructType('<H')),
59 'addrs': bitcoin_p2p.ComposedType([
60 ('addrs', bitcoin_p2p.ListType(bitcoin_p2p.ComposedType([
61 ('timestamp', bitcoin_p2p.StructType('<Q')),
62 ('address', bitcoin_p2p.address),
65 'getaddrs': bitcoin_p2p.ComposedType([
66 ('count', bitcoin_p2p.StructType('<I')),
69 'gettobest': bitcoin_p2p.ComposedType([
70 ('chain_id', p2pool.chain_id_type),
71 ('have', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
73 'getshares': bitcoin_p2p.ComposedType([
74 ('chain_id', p2pool.chain_id_type),
75 ('hashes', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
78 'share0s': bitcoin_p2p.ComposedType([
79 ('chains', bitcoin_p2p.ListType(bitcoin_p2p.ComposedType([
80 ('chain_id', p2pool.chain_id_type),
81 ('hashes', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
84 'share1s': bitcoin_p2p.ComposedType([
85 ('share1s', bitcoin_p2p.ListType(p2pool.share1)),
87 'share2s': bitcoin_p2p.ComposedType([
88 ('share2s', bitcoin_p2p.ListType(bitcoin_p2p.block)),
98 return min(self.node.mode_var.value, self.other_mode_var.value)
100 def connectionMade(self):
101 bitcoin_p2p.BaseProtocol.connectionMade(self)
103 chain = self.node.current_work.value['current_chain']
104 highest_share2 = chain.get_highest_share2()
106 version=self.version,
110 address='::ffff:' + self.transport.getPeer().host,
111 port=self.transport.getPeer().port,
115 address='::ffff:' + self.transport.getHost().host,
116 port=self.transport.getHost().port,
118 nonce=self.node.nonce,
119 sub_version=self.sub_version,
120 mode=self.node.mode_var.value,
122 chain_id=p2pool.chain_id_type.unpack(chain.chain_id_data),
124 hash=highest_share2.share.hash if highest_share2 is not None else 2**256-1,
125 height=highest_share2.height if highest_share2 is not None else 0,
130 self.node_var_watch = self.node.mode_var.changed.watch(lambda new_mode: self.send_set_mode(mode=new_mode))
132 reactor.callLater(10, self._connect_timeout)
134 def _connect_timeout(self):
135 if not self.connected2 and self.transport.connected:
136 print 'Handshake timed out, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
137 self.transport.loseConnection()
139 @defer.inlineCallbacks
141 while self.connected2:
143 yield util.sleep(random.expovariate(1/100))
145 @defer.inlineCallbacks
147 while self.connected2:
148 self.send_addrme(port=self.node.port)
149 #print 'sending addrme'
150 yield util.sleep(random.expovariate(1/100))
152 def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, state):
153 self.other_version = version
154 self.other_services = services
155 self.other_mode_var = util.Variable(mode)
157 if nonce == self.node.nonce:
158 #print 'Detected connection to self, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
159 self.transport.loseConnection()
161 if nonce in self.node.peers:
162 print 'Detected duplicate connection, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
163 self.transport.loseConnection()
167 self.connected2 = True
168 self.node.got_conn(self)
173 if state['highest']['hash'] != 2**256 - 1:
174 self.handle_share0s(chains=[dict(
175 chain_id=state['chain_id'],
176 hashes=[state['highest']['hash']],
179 def handle_set_mode(self, mode):
180 self.other_mode_var.set(mode)
182 def handle_ping(self):
185 def handle_addrme(self, port):
186 host = self.transport.getPeer().host
187 #print 'addrme from', host, port
188 if host == '127.0.0.1':
189 if random.random() < .8 and self.node.peers:
190 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
192 self.node.got_addr(('::ffff:' + self.transport.getPeer().host, port), self.other_services, int(time.time()))
193 if random.random() < .8 and self.node.peers:
194 random.choice(self.node.peers.values()).send_addrs(addrs=[
197 services=self.other_services,
198 address='::ffff:' + host,
201 timestamp=int(time.time()),
204 def handle_addrs(self, addrs):
205 for addr_record in addrs:
206 self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
207 if random.random() < .8 and self.node.peers:
208 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
209 def handle_getaddrs(self, count):
210 self.send_addrs(addrs=[
212 timestamp=self.node.addr_store[host, port][2],
214 services=self.node.addr_store[host, port][0],
219 random.sample(self.node.addr_store.keys(), min(count, len(self.node.addr_store)))
222 def handle_gettobest(self, chain_id, have):
223 self.node.handle_get_to_best(p2pool.chain_id_type.pack(chain_id), have, self)
225 def handle_getshares(self, chain_id, hashes):
226 self.node.handle_get_shares(p2pool.chain_id_type.pack(chain_id), hashes, self)
228 def handle_share0s(self, chains):
230 for hash_ in chain['hashes']:
231 self.node.handle_share_hash(p2pool.chain_id_type.pack(chain['chain_id']), hash_, self)
232 def handle_share1s(self, share1s):
233 for share1 in share1s:
234 hash_ = bitcoin_p2p.block_hash(share1['header'])
235 if hash_ <= conv.bits_to_target(share1['header']['bits']):
236 print 'Dropping peer %s:%i due to invalid share' % (self.transport.getPeer().host, self.transport.getPeer().port)
237 self.transport.loseConnection()
239 share = p2pool.Share(share1['header'], gentx=share1['gentx'])
240 self.node.handle_share(share, self)
241 def handle_share2s(self, share2s):
242 for share2 in share2s:
243 hash_ = bitcoin_p2p.block_hash(share2['header'])
244 if not hash_ <= conv.bits_to_target(share2['header']['bits']):
245 print 'Dropping peer %s:%i due to invalid share' % (self.transport.getPeer().host, self.transport.getPeer().port)
246 self.transport.loseConnection()
248 share = p2pool.Share(share2['header'], txns=share2['txns'])
249 self.node.handle_share(share, self)
251 def send_share(self, share, full=False):
252 if share.hash <= conv.bits_to_target(share.header['bits']):
253 self.send_share2s(share2s=[share.as_block()])
255 if self.mode == 0 and not full:
256 self.send_share0s(chains=[dict(
257 chain_id=p2pool.chain_id_type.unpack(share.chain_id_data),
260 elif self.mode == 1 or full:
261 self.send_share1s(share1s=[dict(
266 raise ValueError(self.mode)
268 def connectionLost(self, reason):
269 if self.node_var_watch is not None:
270 self.node.mode_var.changed.unwatch(self.node_var_watch)
273 self.node.lost_conn(self)
275 class ServerFactory(protocol.ServerFactory):
276 def __init__(self, node):
279 def buildProtocol(self, addr):
280 p = Protocol(self.node)
284 class ClientFactory(protocol.ClientFactory):
285 def __init__(self, node):
288 def buildProtocol(self, addr):
289 p = Protocol(self.node)
293 def startedConnecting(self, connector):
294 self.node.attempt_started(connector)
296 def clientConnectionFailed(self, connector, reason):
297 self.node.attempt_failed(connector)
299 def clientConnectionLost(self, connector, reason):
300 self.node.attempt_ended(connector)
302 addrdb_key = bitcoin_p2p.ComposedType([
303 ('address', bitcoin_p2p.IPV6AddressType()),
304 ('port', bitcoin_p2p.StructType('>H')),
306 addrdb_value = bitcoin_p2p.ComposedType([
307 ('services', bitcoin_p2p.StructType('<Q')),
308 ('first_seen', bitcoin_p2p.StructType('<Q')),
309 ('last_seen', bitcoin_p2p.StructType('<Q')),
312 class AddrStore(util.DictWrapper):
313 def encode_key(self, (address, port)):
314 return addrdb_key.pack(dict(address=address, port=port))
315 def decode_key(self, encoded_key):
316 k = addrdb_key.unpack(encoded_key)
317 return k['address'], k['port']
319 def encode_value(self, (services, first_seen, last_seen)):
320 return addrdb_value.pack(dict(services=services, first_seen=first_seen, last_seen=last_seen))
321 def decode_value(self, encoded_value):
322 v = addrdb_value.unpack(encoded_value)
323 return v['services'], v['first_seen'], v['last_seen']
326 def __init__(self, current_work, port, testnet, addr_store=None, preferred_addrs=[], mode=0, desired_peers=10, max_attempts=100):
327 if addr_store is None:
331 self.testnet = testnet
332 self.addr_store = AddrStore(addr_store)
333 self.preferred_addrs = preferred_addrs
334 self.mode_var = util.Variable(mode)
335 self.desired_peers = desired_peers
336 self.max_attempts = max_attempts
337 self.current_work = current_work
339 self.nonce = random.randrange(2**64)
346 raise ValueError('already running')
350 self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
355 @defer.inlineCallbacks
359 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
360 if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
361 host, port = random.choice(self.preferred_addrs)
363 host2, port = random.choice(self.addr_store.keys())
365 if not host2.startswith(prefix):
366 raise ValueError('invalid address')
367 host = host2[len(prefix):]
369 if (host, port) not in self.attempts:
370 #print 'Trying to connect to', host, port
371 reactor.connectTCP(host, port, ClientFactory(self), timeout=10)
373 traceback.print_exc()
375 yield util.sleep(random.expovariate(1/5))
377 @defer.inlineCallbacks
381 if len(self.addr_store) < self.preferred_addrs and self.peers:
382 random.choice(self.peers.values()).send_getaddrs(count=8)
384 traceback.print_exc()
386 yield util.sleep(random.expovariate(1/20))
390 raise ValueError('already stopped')
394 self.listen_port.stopListening()
397 def attempt_started(self, connector):
398 host, port = connector.getDestination().host, connector.getDestination().port
399 if (host, port) in self.attempts:
400 raise ValueError('already have attempt')
401 self.attempts[host, port] = connector
403 def attempt_failed(self, connector):
404 self.attempt_ended(connector)
406 def attempt_ended(self, connector):
407 host, port = connector.getDestination().host, connector.getDestination().port
408 if (host, port) not in self.attempts:
409 raise ValueError("don't have attempt")
410 if connector is not self.attempts[host, port]:
411 raise ValueError('wrong connector')
412 del self.attempts[host, port]
415 def got_conn(self, conn):
416 if conn.nonce in self.peers:
417 raise ValueError('already have peer')
418 self.peers[conn.nonce] = conn
420 print 'Connected to peer %s:%i' % (conn.transport.getPeer().host, conn.transport.getPeer().port)
422 def lost_conn(self, conn):
423 if conn.nonce not in self.peers:
424 raise ValueError("don't have peer")
425 if conn is not self.peers[conn.nonce]:
426 raise ValueError('wrong conn')
427 del self.peers[conn.nonce]
429 print 'Lost peer %s:%i' % (conn.transport.getPeer().host, conn.transport.getPeer().port)
432 def got_addr(self, (host, port), services, timestamp):
433 if (host, port) in self.addr_store:
434 old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
435 self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
437 self.addr_store[host, port] = services, timestamp, timestamp
439 def handle_share(self, share, peer):
440 print 'handle_share', (share, peer)
442 def handle_share_hash(self, chain_id_data, hash, peer):
443 print 'handle_share_hash', (chain_id_data, hash, peer)
445 def handle_get_to_best(self, chain_id_data, have, peer):
446 print 'handle_get_to_best', (chain_id_data, have, peer)
448 def handle_get_shares(self, chain_id_data, hashes, peer):
449 print 'handle_get_shares', (chain_id_data, hashes, peer)
451 if __name__ == '__main__':
452 p = random.randrange(2**15, 2**16)
454 p2 = random.randrange(2**15, 2**16)
456 n = Node(p2, True, {addrdb_key.pack(dict(address='::ffff:' + '127.0.0.1', port=p)): addrdb_value.pack(dict(services=0, first_seen=int(time.time())-10, last_seen=int(time.time())))})