1 from __future__ import division
6 from twisted.internet import defer, protocol, reactor
7 from twisted.python import log
9 from p2pool.bitcoin import p2p as bitcoin_p2p
10 from p2pool.bitcoin import data as bitcoin_data
11 from p2pool import data as p2pool_data
12 from p2pool.util import deferral, variable, dicts
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):
25 self._prefix = self.node.net.PREFIX
36 return min(self.node.mode_var.value, self.other_mode_var.value)
38 def connectionMade(self):
39 bitcoin_p2p.BaseProtocol.connectionMade(self)
46 address=self.transport.getPeer().host,
47 port=self.transport.getPeer().port,
51 address=self.transport.getHost().host,
52 port=self.transport.getHost().port,
54 nonce=self.node.nonce,
55 sub_version=self.sub_version,
56 mode=self.node.mode_var.value,
57 best_share_hash=self.node.current_work.value['best_share_hash'],
60 self.node_var_watch = self.node.mode_var.changed.watch(lambda new_mode: self.send_set_mode(mode=new_mode))
62 reactor.callLater(10, self._connect_timeout)
64 def _connect_timeout(self):
65 if not self.connected2 and self.transport.connected:
66 print 'Handshake timed out, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
67 self.transport.loseConnection()
69 @defer.inlineCallbacks
71 while self.connected2:
73 yield deferral.sleep(random.expovariate(1/100))
75 @defer.inlineCallbacks
77 while self.connected2:
78 self.send_addrme(port=self.node.port)
79 #print 'sending addrme'
80 yield deferral.sleep(random.expovariate(1/100))
82 message_version = bitcoin_data.ComposedType([
83 ('version', bitcoin_data.StructType('<I')),
84 ('services', bitcoin_data.StructType('<Q')),
85 ('addr_to', bitcoin_data.address_type),
86 ('addr_from', bitcoin_data.address_type),
87 ('nonce', bitcoin_data.StructType('<Q')),
88 ('sub_version', bitcoin_data.VarStrType()),
89 ('mode', bitcoin_data.StructType('<I')),
90 ('best_share_hash', bitcoin_data.PossiblyNone(0, bitcoin_data.HashType())),
92 def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
93 self.other_version = version
94 self.other_services = services
95 self.other_mode_var = variable.Variable(mode)
97 if nonce == self.node.nonce:
98 #print 'Detected connection to self, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
99 self.transport.loseConnection()
101 if nonce in self.node.peers:
102 #print 'Detected duplicate connection, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
103 self.transport.loseConnection()
107 self.connected2 = True
108 self.node.got_conn(self)
113 if best_share_hash is not None:
114 self.handle_share0s(hashes=[best_share_hash])
117 message_update_mode = bitcoin_data.ComposedType([
118 ('mode', bitcoin_data.StructType('<I')),
120 def handle_set_mode(self, mode):
121 self.other_mode_var.set(mode)
123 message_ping = bitcoin_data.ComposedType([])
124 def handle_ping(self):
127 message_addrme = bitcoin_data.ComposedType([
128 ('port', bitcoin_data.StructType('<H')),
130 def handle_addrme(self, port):
131 host = self.transport.getPeer().host
132 #print 'addrme from', host, port
133 if host == '127.0.0.1':
134 if random.random() < .8 and self.node.peers:
135 random.choice(self.node.peers.values()).send_addrme(port=port) # services...
137 self.node.got_addr((self.transport.getPeer().host, port), self.other_services, int(time.time()))
138 if random.random() < .8 and self.node.peers:
139 random.choice(self.node.peers.values()).send_addrs(addrs=[
142 services=self.other_services,
146 timestamp=int(time.time()),
150 message_addrs = bitcoin_data.ComposedType([
151 ('addrs', bitcoin_data.ListType(bitcoin_data.ComposedType([
152 ('timestamp', bitcoin_data.StructType('<Q')),
153 ('address', bitcoin_data.address_type),
156 def handle_addrs(self, addrs):
157 for addr_record in addrs:
158 self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
159 if random.random() < .8 and self.node.peers:
160 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
162 message_getaddrs = bitcoin_data.ComposedType([
163 ('count', bitcoin_data.StructType('<I')),
165 def handle_getaddrs(self, count):
166 self.send_addrs(addrs=[
168 timestamp=self.node.addr_store[host, port][2],
170 services=self.node.addr_store[host, port][0],
175 random.sample(self.node.addr_store.keys(), min(count, len(self.node.addr_store)))
178 message_gettobest = bitcoin_data.ComposedType([
179 ('have', bitcoin_data.ListType(bitcoin_data.HashType())),
181 def handle_gettobest(self, have):
182 self.node.handle_get_to_best(have, self)
184 message_getshares = bitcoin_data.ComposedType([
185 ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
187 def handle_getshares(self, hashes):
188 self.node.handle_get_shares(hashes, self)
190 message_share0s = bitcoin_data.ComposedType([
191 ('hashes', bitcoin_data.ListType(bitcoin_data.HashType())),
193 def handle_share0s(self, hashes):
195 self.node.handle_share_hash(hash_, self)
197 message_share1as = bitcoin_data.ComposedType([
198 ('share1as', bitcoin_data.ListType(p2pool_data.share1a_type)),
200 def handle_share1as(self, share1as):
201 for share1a in share1as:
202 hash_ = bitcoin_data.block_header_type.hash256(share1a['header'])
203 if hash_ <= share1a['header']['target']:
204 print 'Dropping peer %s:%i due to invalid share' % (self.transport.getPeer().host, self.transport.getPeer().port)
205 self.transport.loseConnection()
207 share = p2pool_data.Share.from_share1a(share1a)
208 share.peer = self # XXX
209 self.node.handle_share(share, self)
211 message_share1bs = bitcoin_data.ComposedType([
212 ('share1bs', bitcoin_data.ListType(p2pool_data.share1b_type)),
214 def handle_share1bs(self, share1bs):
215 for share1b in share1bs:
216 hash_ = bitcoin_data.block_header_type.hash256(share1b['header'])
217 if not hash_ <= share1b['header']['target']:
218 print 'Dropping peer %s:%i due to invalid share' % (self.transport.getPeer().host, self.transport.getPeer().port)
219 self.transport.loseConnection()
221 share = p2pool_data.Share.from_share1b(share1b)
222 share.peer = self # XXX
223 self.node.handle_share(share, self)
225 def send_share(self, share, full=False):
226 if share.hash <= share.header['target']:
227 self.send_share1bs(share1bs=[share.as_share1b()])
229 if self.mode == 0 and not full:
230 self.send_share0s(hashes=[share.hash])
231 elif self.mode == 1 or full:
232 self.send_share1as(share1as=[share.as_share1a()])
234 raise ValueError(self.mode)
236 def connectionLost(self, reason):
237 if self.node_var_watch is not None:
238 self.node.mode_var.changed.unwatch(self.node_var_watch)
241 self.node.lost_conn(self)
243 class ServerFactory(protocol.ServerFactory):
244 def __init__(self, node):
247 def buildProtocol(self, addr):
248 p = Protocol(self.node)
252 class ClientFactory(protocol.ClientFactory):
253 def __init__(self, node):
256 def buildProtocol(self, addr):
257 p = Protocol(self.node)
261 def startedConnecting(self, connector):
262 self.node.attempt_started(connector)
264 def clientConnectionFailed(self, connector, reason):
265 self.node.attempt_failed(connector)
267 def clientConnectionLost(self, connector, reason):
268 self.node.attempt_ended(connector)
270 addrdb_key = bitcoin_data.ComposedType([
271 ('address', bitcoin_data.IPV6AddressType()),
272 ('port', bitcoin_data.StructType('>H')),
274 addrdb_value = bitcoin_data.ComposedType([
275 ('services', bitcoin_data.StructType('<Q')),
276 ('first_seen', bitcoin_data.StructType('<Q')),
277 ('last_seen', bitcoin_data.StructType('<Q')),
280 class AddrStore(dicts.DictWrapper):
281 def encode_key(self, (address, port)):
282 return addrdb_key.pack(dict(address=address, port=port))
283 def decode_key(self, encoded_key):
284 k = addrdb_key.unpack(encoded_key)
285 return k['address'], k['port']
287 def encode_value(self, (services, first_seen, last_seen)):
288 return addrdb_value.pack(dict(services=services, first_seen=first_seen, last_seen=last_seen))
289 def decode_value(self, encoded_value):
290 v = addrdb_value.unpack(encoded_value)
291 return v['services'], v['first_seen'], v['last_seen']
294 def __init__(self, current_work, port, net, addr_store=None, preferred_addrs=[], mode=0, desired_peers=10, max_attempts=100):
295 if addr_store is None:
300 self.addr_store = AddrStore(addr_store)
301 self.preferred_addrs = preferred_addrs
302 self.mode_var = variable.Variable(mode)
303 self.desired_peers = desired_peers
304 self.max_attempts = max_attempts
305 self.current_work = current_work
307 self.nonce = random.randrange(2**64)
314 raise ValueError('already running')
318 self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
323 @defer.inlineCallbacks
327 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
328 if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
329 host, port = random.choice(self.preferred_addrs)
331 host, port = random.choice(self.addr_store.keys())
333 if (host, port) not in self.attempts:
334 #print 'Trying to connect to', host, port
335 reactor.connectTCP(host, port, ClientFactory(self), timeout=10)
339 yield deferral.sleep(random.expovariate(1/5))
341 @defer.inlineCallbacks
345 if len(self.addr_store) < self.preferred_addrs and self.peers:
346 random.choice(self.peers.values()).send_getaddrs(count=8)
350 yield deferral.sleep(random.expovariate(1/20))
354 raise ValueError('already stopped')
358 self.listen_port.stopListening()
361 def attempt_started(self, connector):
362 host, port = connector.getDestination().host, connector.getDestination().port
363 if (host, port) in self.attempts:
364 raise ValueError('already have attempt')
365 self.attempts[host, port] = connector
367 def attempt_failed(self, connector):
368 self.attempt_ended(connector)
370 def attempt_ended(self, connector):
371 host, port = connector.getDestination().host, connector.getDestination().port
372 if (host, port) not in self.attempts:
373 raise ValueError('''don't have attempt''')
374 if connector is not self.attempts[host, port]:
375 raise ValueError('wrong connector')
376 del self.attempts[host, port]
379 def got_conn(self, conn):
380 if conn.nonce in self.peers:
381 raise ValueError('already have peer')
382 self.peers[conn.nonce] = conn
384 print 'Connected to peer %s:%i' % (conn.transport.getPeer().host, conn.transport.getPeer().port)
386 def lost_conn(self, conn):
387 if conn.nonce not in self.peers:
388 raise ValueError('''don't have peer''')
389 if conn is not self.peers[conn.nonce]:
390 raise ValueError('wrong conn')
391 del self.peers[conn.nonce]
393 print 'Lost peer %s:%i' % (conn.transport.getPeer().host, conn.transport.getPeer().port)
396 def got_addr(self, (host, port), services, timestamp):
397 if (host, port) in self.addr_store:
398 old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
399 self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
401 self.addr_store[host, port] = services, timestamp, timestamp
403 def handle_share(self, share, peer):
404 print 'handle_share', (share, peer)
406 def handle_share_hash(self, hash_, peer):
407 print 'handle_share_hash', (hash_, peer)
409 def handle_get_to_best(self, have, peer):
410 print 'handle_get_to_best', (have, peer)
412 def handle_get_shares(self, hashes, peer):
413 print 'handle_get_shares', (hashes, peer)
415 if __name__ == '__main__':
416 p = random.randrange(2**15, 2**16)
418 p2 = random.randrange(2**15, 2**16)
420 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())))})