1 from __future__ import division
7 from twisted.internet import defer, reactor, protocol, task
15 # 0: send hash first (high latency, low bandwidth)
16 # 1: send entire share (low latency, high bandwidth)
20 d = pygame.display.set_mode((512, 512))
21 task.LoopingCall(pygame.display.update).start(.1)
22 def draw_circle(id, color=(255,0,0)):
24 pygame.draw.circle(d, (255, 0, 0), (hash(id)%512, hash(id)//512%512), 4)
25 def draw_line(id, id2, color):
27 pygame.draw.line(d, color, (hash(id)%512, hash(id)//512%512), (hash(id2)%512, hash(id2)//512%512))
29 draw_circle = draw_line = lambda *args, **kwargs: None
31 class Protocol(bitcoin_p2p.BaseProtocol):
35 def __init__(self, node):
41 return 'f77cea5d16a2183f'.decode('hex')
43 return '95ec1eda53c5e716'.decode('hex')
48 'version': bitcoin_p2p.ComposedType([
49 ('version', bitcoin_p2p.StructType('<I')),
50 ('services', bitcoin_p2p.StructType('<Q')),
51 ('addr_to', bitcoin_p2p.address),
52 ('addr_from', bitcoin_p2p.address),
53 ('nonce', bitcoin_p2p.StructType('<Q')),
54 ('sub_version', bitcoin_p2p.VarStrType()),
55 ('mode', bitcoin_p2p.StructType('<I')),
56 ('state', bitcoin_p2p.ComposedType([
57 ('chain_id', p2pool.chain_id_type),
58 ('highest', bitcoin_p2p.ComposedType([
59 ('hash', bitcoin_p2p.HashType()),
60 ('height', bitcoin_p2p.StructType('<Q')),
65 'update_mode': bitcoin_p2p.ComposedType([
66 ('mode', bitcoin_p2p.StructType('<I')),
69 'ping': bitcoin_p2p.ComposedType([]),
71 'addrme': bitcoin_p2p.ComposedType([
72 ('port', bitcoin_p2p.StructType('<H')),
74 'addrs': bitcoin_p2p.ComposedType([
75 ('addrs', bitcoin_p2p.ListType(bitcoin_p2p.ComposedType([
76 ('timestamp', bitcoin_p2p.StructType('<Q')),
77 ('address', bitcoin_p2p.address),
80 'getaddrs': bitcoin_p2p.ComposedType([
81 ('count', bitcoin_p2p.StructType('<I')),
84 'getsharesbychain': bitcoin_p2p.ComposedType([
85 ('chain_id', p2pool.chain_id_type),
86 ('have', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
88 'getshares': bitcoin_p2p.ComposedType([
89 ('hashes', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
92 'share0s': bitcoin_p2p.ComposedType([
93 ('chains', bitcoin_p2p.ListType(bitcoin_p2p.ComposedType([
94 ('chain_id', p2pool.chain_id_type),
95 ('hashes', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
98 'share1s': bitcoin_p2p.ComposedType([
99 ('share1s', bitcoin_p2p.ListType(p2pool.share1)),
101 'share2s': bitcoin_p2p.ComposedType([
102 ('share2s', bitcoin_p2p.ListType(bitcoin_p2p.block)),
107 node_var_watch = None
111 return min(self.node.mode_var.value, self.other_mode_var.value)
113 def connectionMade(self):
114 bitcoin_p2p.BaseProtocol.connectionMade(self)
115 if isinstance(self.factory, ClientFactory):
116 draw_line(self.node.port, self.transport.getPeer().port, (128, 128, 128))
118 chain = self.node.current_work['current_chain']
120 version=self.version,
124 address='::ffff:' + self.transport.getPeer().host,
125 port=self.transport.getPeer().port,
129 address='::ffff:' + self.transport.getHost().host,
130 port=self.transport.getHost().port,
132 nonce=self.node.nonce,
133 sub_version=self.sub_version,
134 mode=self.node.mode_var.value,
137 last_p2pool_block_hash=0,
147 self.node_var_watch = self.node.mode_var.changed.watch(lambda new_mode: self.send_set_mode(mode=new_mode))
149 self.connected2 = False
154 reactor.callLater(10, self._connect_timeout)
156 def _connect_timeout(self):
157 if not self.connected2 and self.transport.connected:
158 print "Handshake timed out, disconnecting"
159 self.transport.loseConnection()
161 @defer.inlineCallbacks
163 while self.connected2:
165 yield util.sleep(random.expovariate(1/100))
167 @defer.inlineCallbacks
169 while self.connected2:
170 self.send_addrme(port=self.node.port)
171 yield util.sleep(random.expovariate(1/100))
173 def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, state):
174 self.other_version = version
175 self.other_services = services
176 self.other_mode_var = util.Variable(mode)
178 if nonce == self.node.nonce:
179 #print "Detected connection to self, disconnecting"
180 self.transport.loseConnection()
185 self.connected2 = True
186 self.node.got_conn(self, services)
187 if isinstance(self.factory, ClientFactory):
188 draw_line(self.node.port, self.transport.getPeer().port, (0, 255, 0))
190 def handle_set_mode(self, mode):
191 self.other_mode_var.set(mode)
193 def handle_ping(self):
196 def handle_addrme(self, port):
197 self.node.got_addr(('::ffff:' + self.transport.getPeer().host, port), self.other_services, int(time.time()))
198 if random.random() < .7 and self.node.peers:
199 random.choice(self.node.peers.values()).send_addrs(addrs=[dict(address=dict(services=self.other_services, address='::ffff:' + self.transport.getPeer().host, port=port), timestamp=int(time.time()))])
200 def handle_addrs(self, addrs):
201 for addr_record in addrs:
202 self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
203 if random.random() < .7 and self.node.peers:
204 random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
205 def handle_getaddrs(self, count):
206 self.send_addrs(addrs=[
208 timestamp=self.node.addr_store[host, port][2],
210 services=self.node.addr_store[host, port][0],
215 random.sample(self.node.addr_store.keys(), min(count, len(self.node.addr_store)))
218 def handle_share0s(self, chains):
220 for hash_ in chain['hashes']:
221 self.node.handle_share_hash((chain['chain_id']['previous_p2pool_block'], chain['chain_id']['bits']), hash_)
222 def handle_share1s(self, share1s):
223 for share1 in share1s:
224 hash_ = bitcoin_p2p.block_hash(share1['header'])
225 if hash_ <= conv.bits_to_target(share1['header']['bits']):
226 print "Dropping peer %s:%i due to invalid share" % (self.transport.getPeer().host, self.transport.getPeer().port)
227 self.transport.loseConnection()
229 share = Share(share1['header'], gentx=share1['gentx'])
230 self.node.handle_share(share)
231 def handle_share2s(self, share2s):
232 for share2 in share2s:
233 hash_ = bitcoin_p2p.block_hash(share2['header'])
234 if not hash_ <= conv.bits_to_target(share1['header']['bits']):
235 print "Dropping peer %s:%i due to invalid share" % (self.transport.getPeer().host, self.transport.getPeer().port)
236 self.transport.loseConnection()
238 share = Share(share1['header'], txns=share1['txns'])
239 self.node.handle_share(share)
241 def send_share(self, share):
242 if share.hash <= conv.bits_to_target(share.header['bits']):
243 self.send_share2s(share2s=[share.as_block()])
246 self.send_share0s(chains=[dict(
247 chain_id=p2pool.chain_id_type.unpack(share.chain_id_data),
251 self.send_share1s(share1s=[dict(
256 raise ValueError(self.mode)
258 def connectionLost(self, reason):
259 if self.node_var_watch is not None:
260 self.node.mode_var.changed.unwatch(self.node_var_watch)
263 self.node.lost_conn(self)
265 if isinstance(self.factory, ClientFactory):
266 draw_line(self.node.port, self.transport.getPeer().port, (255, 0, 0))
268 class ServerFactory(protocol.ServerFactory):
269 def __init__(self, node):
272 def buildProtocol(self, addr):
273 p = Protocol(self.node)
277 class ClientFactory(protocol.ClientFactory):
278 def __init__(self, node):
281 def buildProtocol(self, addr):
282 p = Protocol(self.node)
286 def startedConnecting(self, connector):
287 self.node.attempt_started(connector)
289 def clientConnectionFailed(self, connector, reason):
290 self.node.attempt_failed(connector)
292 def clientConnectionLost(self, connector, reason):
293 self.node.attempt_ended(connector)
295 addrdb_key = bitcoin_p2p.ComposedType([
296 ('address', bitcoin_p2p.IPV6AddressType()),
297 ('port', bitcoin_p2p.StructType('>H')),
299 addrdb_value = bitcoin_p2p.ComposedType([
300 ('services', bitcoin_p2p.StructType('<Q')),
301 ('first_seen', bitcoin_p2p.StructType('<Q')),
302 ('last_seen', bitcoin_p2p.StructType('<Q')),
305 class AddrStore(util.DictWrapper):
306 def encode_key(self, (address, port)):
307 return addrdb_key.pack(dict(address=address, port=port))
308 def decode_key(self, encoded_key):
309 k = addrdb_key.unpack(encoded_key)
310 return k['address'], k['port']
312 def encode_value(self, (services, first_seen, last_seen)):
313 return addrdb_value.pack(dict(services=services, first_seen=first_seen, last_seen=last_seen))
314 def decode_value(self, encoded_value):
315 v = addrdb_value.unpack(encoded_value)
316 return v['services'], v['first_seen'], v['last_seen']
319 def __init__(self, port, testnet, addr_store=None, preferred_addrs=[], mode=0, desired_peers=10, max_attempts=100):
320 if addr_store is None:
324 self.testnet = testnet
325 self.addr_store = AddrStore(addr_store)
326 self.preferred_addrs = preferred_addrs
327 self.mode_var = util.Variable(mode)
328 self.desired_peers = desired_peers
329 self.max_attempts = max_attempts
331 self.current_work = dict(current_chain=None)
333 self.nonce = random.randrange(2**64)
338 draw_circle(self.port)
342 raise ValueError("already running")
346 self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
351 @defer.inlineCallbacks
355 if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
356 if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
357 host, port = random.choice(self.preferred_addrs)
359 host2, port = random.choice(self.addr_store.keys())
361 if not host2.startswith(prefix):
362 raise ValueError("invalid address")
363 host = host2[len(prefix):]
365 if (host, port) not in self.attempts and (host, port) not in self.peers:
366 reactor.connectTCP(host, port, ClientFactory(self), timeout=10)
368 traceback.print_exc()
370 yield util.sleep(random.expovariate(1/5))
372 @defer.inlineCallbacks
376 if len(self.addr_store) < self.preferred_addrs and self.peers:
377 random.choice(self.peers.values()).send_getaddrs(count=8)
379 traceback.print_exc()
381 yield util.sleep(random.expovariate(1/20))
385 raise ValueError("already stopped")
389 self.listen_port.stopListening()
392 def attempt_started(self, connector):
393 host, port = connector.getDestination().host, connector.getDestination().port
394 if (host, port) in self.attempts:
395 raise ValueError("already have attempt")
396 self.attempts[host, port] = connector
398 def attempt_failed(self, connector):
399 self.attempt_ended(connector)
401 def attempt_ended(self, connector):
402 host, port = connector.getDestination().host, connector.getDestination().port
403 if (host, port) not in self.attempts:
404 raise ValueError("don't have attempt")
405 if connector is not self.attempts[host, port]:
406 raise ValueError("wrong connector")
407 del self.attempts[host, port]
410 def got_conn(self, conn, services):
411 host, port = conn.transport.getPeer().host, conn.transport.getPeer().port
412 if (host, port) in self.peers:
413 raise ValueError("already have peer")
414 self.peers[host, port] = conn
416 print "Connected to peer %s:%i" % (host, port)
418 def lost_conn(self, conn):
419 host, port = conn.transport.getPeer().host, conn.transport.getPeer().port
420 if (host, port) not in self.peers:
421 raise ValueError("don't have peer")
422 if conn is not self.peers[host, port]:
423 raise ValueError("wrong conn")
424 del self.peers[host, port]
426 print "Lost peer %s:%i" % (host, port)
429 def got_addr(self, (host, port), services, timestamp):
430 if (host, port) in self.addr_store:
431 old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
432 self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
434 self.addr_store[host, port] = services, timestamp, timestamp
436 if __name__ == '__main__':
437 p = random.randrange(2**15, 2**16)
439 p2 = random.randrange(2**15, 2**16)
441 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())))})