+from __future__ import division
+
import random
import time
import traceback
-from entangled.kademlia import node, datastore
-from twisted.internet import defer
+from twisted.internet import defer, protocol, reactor
+import bitcoin_p2p
+import conv
+import p2pool
import util
-class Node(node.Node):
+# mode
+# 0: send hash first (high latency, low bandwidth)
+# 1: send entire share (low latency, high bandwidth)
+
+class Protocol(bitcoin_p2p.BaseProtocol):
+ version = 1
+ sub_version = ''
+
+ def __init__(self, node):
+ self.node = node
+
+ if self.node.testnet:
+ self._prefix = 'f77cea5d16a2183f'.decode('hex')
+ else:
+ self._prefix = '95ec1eda53c5e716'.decode('hex')
+
+ use_checksum = True
+
+ message_types = {
+ 'version': bitcoin_p2p.ComposedType([
+ ('version', bitcoin_p2p.StructType('<I')),
+ ('services', bitcoin_p2p.StructType('<Q')),
+ ('addr_to', bitcoin_p2p.address),
+ ('addr_from', bitcoin_p2p.address),
+ ('nonce', bitcoin_p2p.StructType('<Q')),
+ ('sub_version', bitcoin_p2p.VarStrType()),
+ ('mode', bitcoin_p2p.StructType('<I')),
+ ('state', bitcoin_p2p.ComposedType([
+ ('chain_id', p2pool.chain_id_type),
+ ('highest', bitcoin_p2p.ComposedType([
+ ('hash', bitcoin_p2p.HashType()),
+ ('height', bitcoin_p2p.StructType('<Q')),
+ ])),
+ ])),
+ ]),
+
+ 'update_mode': bitcoin_p2p.ComposedType([
+ ('mode', bitcoin_p2p.StructType('<I')),
+ ]),
+
+ 'ping': bitcoin_p2p.ComposedType([]),
+
+ 'addrme': bitcoin_p2p.ComposedType([
+ ('port', bitcoin_p2p.StructType('<H')),
+ ]),
+ 'addrs': bitcoin_p2p.ComposedType([
+ ('addrs', bitcoin_p2p.ListType(bitcoin_p2p.ComposedType([
+ ('timestamp', bitcoin_p2p.StructType('<Q')),
+ ('address', bitcoin_p2p.address),
+ ]))),
+ ]),
+ 'getaddrs': bitcoin_p2p.ComposedType([
+ ('count', bitcoin_p2p.StructType('<I')),
+ ]),
+
+ 'gettobest': bitcoin_p2p.ComposedType([
+ ('chain_id', p2pool.chain_id_type),
+ ('have', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
+ ]),
+ 'getshares': bitcoin_p2p.ComposedType([
+ ('chain_id', p2pool.chain_id_type),
+ ('hashes', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
+ ]),
+
+ 'share0s': bitcoin_p2p.ComposedType([
+ ('chains', bitcoin_p2p.ListType(bitcoin_p2p.ComposedType([
+ ('chain_id', p2pool.chain_id_type),
+ ('hashes', bitcoin_p2p.ListType(bitcoin_p2p.HashType())),
+ ]))),
+ ]),
+ 'share1s': bitcoin_p2p.ComposedType([
+ ('share1s', bitcoin_p2p.ListType(p2pool.share1)),
+ ]),
+ 'share2s': bitcoin_p2p.ComposedType([
+ ('share2s', bitcoin_p2p.ListType(bitcoin_p2p.block)),
+ ]),
+ }
+
+ other_version = None
+ node_var_watch = None
+ connected2 = False
+
@property
- def peers(self):
- for bucket in self._routingTable._buckets:
- for contact in bucket._contacts:
- yield contact
+ def mode(self):
+ return min(self.node.mode_var.value, self.other_mode_var.value)
+
+ def connectionMade(self):
+ bitcoin_p2p.BaseProtocol.connectionMade(self)
+
+ chain = self.node.current_work.value['current_chain']
+ highest_share2 = chain.get_highest_share2()
+ self.send_version(
+ version=self.version,
+ services=0,
+ addr_to=dict(
+ services=0,
+ address='::ffff:' + self.transport.getPeer().host,
+ port=self.transport.getPeer().port,
+ ),
+ addr_from=dict(
+ services=0,
+ address='::ffff:' + self.transport.getHost().host,
+ port=self.transport.getHost().port,
+ ),
+ nonce=self.node.nonce,
+ sub_version=self.sub_version,
+ mode=self.node.mode_var.value,
+ state=dict(
+ chain_id=p2pool.chain_id_type.unpack(chain.chain_id_data),
+ highest=dict(
+ hash=highest_share2.share.hash if highest_share2 is not None else 2**256-1,
+ height=highest_share2.height if highest_share2 is not None else 0,
+ ),
+ ),
+ )
+
+ self.node_var_watch = self.node.mode_var.changed.watch(lambda new_mode: self.send_set_mode(mode=new_mode))
+
+ reactor.callLater(10, self._connect_timeout)
+
+ def _connect_timeout(self):
+ if not self.connected2 and self.transport.connected:
+ print 'Handshake timed out, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
+ self.transport.loseConnection()
+
+ @defer.inlineCallbacks
+ def _think(self):
+ while self.connected2:
+ self.send_ping()
+ yield util.sleep(random.expovariate(1/100))
+
+ @defer.inlineCallbacks
+ def _think2(self):
+ while self.connected2:
+ self.send_addrme(port=self.node.port)
+ #print 'sending addrme'
+ yield util.sleep(random.expovariate(1/100))
+
+ def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, state):
+ self.other_version = version
+ self.other_services = services
+ self.other_mode_var = util.Variable(mode)
+
+ if nonce == self.node.nonce:
+ #print 'Detected connection to self, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
+ self.transport.loseConnection()
+ return
+ if nonce in self.node.peers:
+ print 'Detected duplicate connection, disconnecting from %s:%i' % (self.transport.getPeer().host, self.transport.getPeer().port)
+ self.transport.loseConnection()
+ return
+
+ self.nonce = nonce
+ self.connected2 = True
+ self.node.got_conn(self)
+
+ self._think()
+ self._think2()
+
+ if state['highest']['hash'] != 2**256 - 1:
+ self.handle_share0s(chains=[dict(
+ chain_id=state['chain_id'],
+ hashes=[state['highest']['hash']],
+ )])
+
+ def handle_set_mode(self, mode):
+ self.other_mode_var.set(mode)
+
+ def handle_ping(self):
+ pass
+
+ def handle_addrme(self, port):
+ host = self.transport.getPeer().host
+ #print 'addrme from', host, port
+ if host == '127.0.0.1':
+ if random.random() < .8 and self.node.peers:
+ random.choice(self.node.peers.values()).send_addrme(port=port) # services...
+ else:
+ self.node.got_addr(('::ffff:' + self.transport.getPeer().host, port), self.other_services, int(time.time()))
+ if random.random() < .8 and self.node.peers:
+ random.choice(self.node.peers.values()).send_addrs(addrs=[
+ dict(
+ address=dict(
+ services=self.other_services,
+ address='::ffff:' + host,
+ port=port,
+ ),
+ timestamp=int(time.time()),
+ ),
+ ])
+ def handle_addrs(self, addrs):
+ for addr_record in addrs:
+ self.node.got_addr((addr_record['address']['address'], addr_record['address']['port']), addr_record['address']['services'], min(int(time.time()), addr_record['timestamp']))
+ if random.random() < .8 and self.node.peers:
+ random.choice(self.node.peers.values()).send_addrs(addrs=[addr_record])
+ def handle_getaddrs(self, count):
+ self.send_addrs(addrs=[
+ dict(
+ timestamp=self.node.addr_store[host, port][2],
+ address=dict(
+ services=self.node.addr_store[host, port][0],
+ address=host,
+ port=port,
+ ),
+ ) for host, port in
+ random.sample(self.node.addr_store.keys(), min(count, len(self.node.addr_store)))
+ ])
+
+ def handle_gettobest(self, chain_id, have):
+ self.node.handle_get_to_best(p2pool.chain_id_type.pack(chain_id), have, self)
- def __init__(self, blockCallback, **kwargs):
- self.blockCallback = blockCallback
- node.Node.__init__(self, **kwargs)
- self.clock_offset = 0
+ def handle_getshares(self, chain_id, hashes):
+ self.node.handle_get_shares(p2pool.chain_id_type.pack(chain_id), hashes, self)
- # time
+ def handle_share0s(self, chains):
+ for chain in chains:
+ for hash_ in chain['hashes']:
+ self.node.handle_share_hash(p2pool.chain_id_type.pack(chain['chain_id']), hash_, self)
+ def handle_share1s(self, share1s):
+ for share1 in share1s:
+ hash_ = bitcoin_p2p.block_hash(share1['header'])
+ if hash_ <= conv.bits_to_target(share1['header']['bits']):
+ print 'Dropping peer %s:%i due to invalid share' % (self.transport.getPeer().host, self.transport.getPeer().port)
+ self.transport.loseConnection()
+ return
+ share = p2pool.Share(share1['header'], gentx=share1['gentx'])
+ self.node.handle_share(share, self)
+ def handle_share2s(self, share2s):
+ for share2 in share2s:
+ hash_ = bitcoin_p2p.block_hash(share2['header'])
+ if not hash_ <= conv.bits_to_target(share2['header']['bits']):
+ print 'Dropping peer %s:%i due to invalid share' % (self.transport.getPeer().host, self.transport.getPeer().port)
+ self.transport.loseConnection()
+ return
+ share = p2pool.Share(share2['header'], txns=share2['txns'])
+ self.node.handle_share(share, self)
- def joinNetwork(self, *args, **kwargs):
- node.Node.joinNetwork(self, *args, **kwargs)
+ def send_share(self, share, full=False):
+ if share.hash <= conv.bits_to_target(share.header['bits']):
+ self.send_share2s(share2s=[share.as_block()])
+ else:
+ if self.mode == 0 and not full:
+ self.send_share0s(chains=[dict(
+ chain_id=p2pool.chain_id_type.unpack(share.chain_id_data),
+ hashes=[share.hash],
+ )])
+ elif self.mode == 1 or full:
+ self.send_share1s(share1s=[dict(
+ header=share.header,
+ gentx=share.gentx,
+ )])
+ else:
+ raise ValueError(self.mode)
+
+ def connectionLost(self, reason):
+ if self.node_var_watch is not None:
+ self.node.mode_var.changed.unwatch(self.node_var_watch)
- def go(res):
- self.joined()
- return res
- self._joinDeferred.addBoth(go)
+ if self.connected2:
+ self.node.lost_conn(self)
+
+class ServerFactory(protocol.ServerFactory):
+ def __init__(self, node):
+ self.node = node
+
+ def buildProtocol(self, addr):
+ p = Protocol(self.node)
+ p.factory = self
+ return p
+
+class ClientFactory(protocol.ClientFactory):
+ def __init__(self, node):
+ self.node = node
- def joined(self):
- self.time_task()
+ def buildProtocol(self, addr):
+ p = Protocol(self.node)
+ p.factory = self
+ return p
+
+ def startedConnecting(self, connector):
+ self.node.attempt_started(connector)
+
+ def clientConnectionFailed(self, connector, reason):
+ self.node.attempt_failed(connector)
+
+ def clientConnectionLost(self, connector, reason):
+ self.node.attempt_ended(connector)
+
+addrdb_key = bitcoin_p2p.ComposedType([
+ ('address', bitcoin_p2p.IPV6AddressType()),
+ ('port', bitcoin_p2p.StructType('>H')),
+])
+addrdb_value = bitcoin_p2p.ComposedType([
+ ('services', bitcoin_p2p.StructType('<Q')),
+ ('first_seen', bitcoin_p2p.StructType('<Q')),
+ ('last_seen', bitcoin_p2p.StructType('<Q')),
+])
+
+class AddrStore(util.DictWrapper):
+ def encode_key(self, (address, port)):
+ return addrdb_key.pack(dict(address=address, port=port))
+ def decode_key(self, encoded_key):
+ k = addrdb_key.unpack(encoded_key)
+ return k['address'], k['port']
- def get_my_time(self):
- return time.time() - self.clock_offset
+ def encode_value(self, (services, first_seen, last_seen)):
+ return addrdb_value.pack(dict(services=services, first_seen=first_seen, last_seen=last_seen))
+ def decode_value(self, encoded_value):
+ v = addrdb_value.unpack(encoded_value)
+ return v['services'], v['first_seen'], v['last_seen']
+
+class Node(object):
+ def __init__(self, current_work, port, testnet, addr_store=None, preferred_addrs=[], mode=0, desired_peers=10, max_attempts=100):
+ if addr_store is None:
+ addr_store = {}
+
+ self.port = port
+ self.testnet = testnet
+ self.addr_store = AddrStore(addr_store)
+ self.preferred_addrs = preferred_addrs
+ self.mode_var = util.Variable(mode)
+ self.desired_peers = desired_peers
+ self.max_attempts = max_attempts
+ self.current_work = current_work
+
+ self.nonce = random.randrange(2**64)
+ self.attempts = {}
+ self.peers = {}
+ self.running = False
- @node.rpcmethod
- def get_time(self):
- return time.time()
+ def start(self):
+ if self.running:
+ raise ValueError('already running')
+
+ self.running = True
+
+ self.listen_port = reactor.listenTCP(self.port, ServerFactory(self))
+
+ self._think()
+ self._think2()
@defer.inlineCallbacks
- def time_task(self):
- while True:
- t_send = time.time()
- clock_deltas = {None: (t_send, t_send)}
- for peer, request in [(peer, peer.get_time().addCallback(lambda res: (time.time(), res))) for peer in self.peers]:
- try:
- t_recv, response = yield request
- t = (t_send + t_recv)/2
- clock_deltas[(peer.id, peer.address, peer.port)] = (t, float(response))
- except:
- traceback.print_exc()
- continue
+ def _think(self):
+ while self.running:
+ try:
+ if len(self.peers) < self.desired_peers and len(self.attempts) < self.max_attempts and (len(self.preferred_addrs) or len(self.addr_store)):
+ if (random.randrange(2) and len(self.preferred_addrs)) or not len(self.addr_store):
+ host, port = random.choice(self.preferred_addrs)
+ else:
+ host2, port = random.choice(self.addr_store.keys())
+ prefix = '::ffff:'
+ if not host2.startswith(prefix):
+ raise ValueError('invalid address')
+ host = host2[len(prefix):]
+
+ if (host, port) not in self.attempts:
+ #print 'Trying to connect to', host, port
+ reactor.connectTCP(host, port, ClientFactory(self), timeout=10)
+ except:
+ traceback.print_exc()
- self.clock_offset = util.median(mine - theirs for mine, theirs in clock_deltas.itervalues())
+ yield util.sleep(random.expovariate(1/5))
+
+ @defer.inlineCallbacks
+ def _think2(self):
+ while self.running:
+ try:
+ if len(self.addr_store) < self.preferred_addrs and self.peers:
+ random.choice(self.peers.values()).send_getaddrs(count=8)
+ except:
+ traceback.print_exc()
- yield util.sleep(random.expovariate(1/500.))
+ yield util.sleep(random.expovariate(1/20))
+
+ def stop(self):
+ if not self.running:
+ raise ValueError('already stopped')
+
+ self.running = False
+
+ self.listen_port.stopListening()
- # disable data storage
- @node.rpcmethod
- def store(self, key, value, originalPublisherID=None, age=0, **kwargs):
- return
+ def attempt_started(self, connector):
+ host, port = connector.getDestination().host, connector.getDestination().port
+ if (host, port) in self.attempts:
+ raise ValueError('already have attempt')
+ self.attempts[host, port] = connector
- @node.rpcmethod
- def findValue(self, key, value, originalPublisherID=None, age=0, **kwargs):
- return
+ def attempt_failed(self, connector):
+ self.attempt_ended(connector)
- def _republishData(self, *args):
- return defer.succeed(None)
+ def attempt_ended(self, connector):
+ host, port = connector.getDestination().host, connector.getDestination().port
+ if (host, port) not in self.attempts:
+ raise ValueError("don't have attempt")
+ if connector is not self.attempts[host, port]:
+ raise ValueError('wrong connector')
+ del self.attempts[host, port]
- # meat
- @node.rpcmethod
- def block(self, block_data):
- self.blockCallback(block_data)
+ def got_conn(self, conn):
+ if conn.nonce in self.peers:
+ raise ValueError('already have peer')
+ self.peers[conn.nonce] = conn
+
+ print 'Connected to peer %s:%i' % (conn.transport.getPeer().host, conn.transport.getPeer().port)
+
+ def lost_conn(self, conn):
+ if conn.nonce not in self.peers:
+ raise ValueError("don't have peer")
+ if conn is not self.peers[conn.nonce]:
+ raise ValueError('wrong conn')
+ del self.peers[conn.nonce]
+
+ print 'Lost peer %s:%i' % (conn.transport.getPeer().host, conn.transport.getPeer().port)
+
+
+ def got_addr(self, (host, port), services, timestamp):
+ if (host, port) in self.addr_store:
+ old_services, old_first_seen, old_last_seen = self.addr_store[host, port]
+ self.addr_store[host, port] = services, old_first_seen, max(old_last_seen, timestamp)
+ else:
+ self.addr_store[host, port] = services, timestamp, timestamp
+
+ def handle_share(self, share, peer):
+ print 'handle_share', (share, peer)
+
+ def handle_share_hash(self, chain_id_data, hash, peer):
+ print 'handle_share_hash', (chain_id_data, hash, peer)
+
+ def handle_get_to_best(self, chain_id_data, have, peer):
+ print 'handle_get_to_best', (chain_id_data, have, peer)
+
+ def handle_get_shares(self, chain_id_data, hashes, peer):
+ print 'handle_get_shares', (chain_id_data, hashes, peer)
+
+if __name__ == '__main__':
+ p = random.randrange(2**15, 2**16)
+ for i in xrange(5):
+ p2 = random.randrange(2**15, 2**16)
+ print p, p2
+ 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())))})
+ n.start()
+ p = p2
+
+ reactor.run()
git://git.novaco.in / p2pool.git / blobdiff