from __future__ import division import random import sys import time from twisted.internet import defer, error, protocol, reactor from twisted.python import log import p2pool from p2pool import data as p2pool_data from p2pool.bitcoin import p2p as bitcoin_p2p from p2pool.bitcoin import data as bitcoin_data from p2pool.util import deferral, pack class Protocol(bitcoin_p2p.BaseProtocol): version = 2 sub_version = p2pool.__version__ def __init__(self, node, incoming): self.node = node self.incoming = incoming self._prefix = self.node.net.PREFIX max_payload_length = 1000000 use_checksum = True other_version = None connected2 = False def connectionMade(self): bitcoin_p2p.BaseProtocol.connectionMade(self) self.factory.proto_made_connection(self) self.addr = self.transport.getPeer().host, self.transport.getPeer().port self.send_version( version=self.version, services=0, addr_to=dict( services=0, address=self.transport.getPeer().host, port=self.transport.getPeer().port, ), addr_from=dict( services=0, address=self.transport.getHost().host, port=self.transport.getHost().port, ), nonce=self.node.nonce, sub_version=self.sub_version, mode=1, best_share_hash=self.node.best_share_hash_func(), ) reactor.callLater(10, self._connect_timeout) self.timeout_delayed = reactor.callLater(100, self._timeout) def _connect_timeout(self): if not self.connected2 and self.transport.connected: print 'Handshake timed out, disconnecting from %s:%i' % self.addr self.transport.loseConnection() def packetReceived(self, command, payload2): if command != 'version' and not self.connected2: self.transport.loseConnection() return if not self.timeout_delayed.called: self.timeout_delayed.cancel() self.timeout_delayed = reactor.callLater(100, self._timeout) bitcoin_p2p.BaseProtocol.packetReceived(self, command, payload2) def _timeout(self): if self.transport.connected: print 'Connection timed out, disconnecting from %s:%i' % self.addr self.transport.loseConnection() @defer.inlineCallbacks def _think(self): while self.connected2: self.send_ping() yield deferral.sleep(random.expovariate(1/100)) @defer.inlineCallbacks def _think2(self): while self.connected2: self.send_addrme(port=self.node.port) #print 'sending addrme' yield deferral.sleep(random.expovariate(1/(100*len(self.node.peers) + 1))) message_version = pack.ComposedType([ ('version', pack.IntType(32)), ('services', pack.IntType(64)), ('addr_to', bitcoin_data.address_type), ('addr_from', bitcoin_data.address_type), ('nonce', pack.IntType(64)), ('sub_version', pack.VarStrType()), ('mode', pack.IntType(32)), # always 1 for legacy compatibility ('best_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))), ]) def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash): if self.other_version is not None or version < 2: self.transport.loseConnection() return self.other_version = version self.other_sub_version = sub_version[:512] self.other_services = services if nonce == self.node.nonce: #print 'Detected connection to self, disconnecting from %s:%i' % self.addr self.transport.loseConnection() return if nonce in self.node.peers: #print 'Detected duplicate connection, disconnecting from %s:%i' % self.addr self.transport.loseConnection() return self.nonce = nonce self.connected2 = True self.factory.proto_connected(self) self._think() self._think2() if best_share_hash is not None: self.node.handle_share_hashes([best_share_hash], self) message_ping = pack.ComposedType([]) def handle_ping(self): pass message_addrme = pack.ComposedType([ ('port', pack.IntType(16)), ]) 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((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=host, port=port, ), timestamp=int(time.time()), ), ]) message_addrs = pack.ComposedType([ ('addrs', pack.ListType(pack.ComposedType([ ('timestamp', pack.IntType(64)), ('address', bitcoin_data.address_type), ]))), ]) 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]) message_getaddrs = pack.ComposedType([ ('count', pack.IntType(32)), ]) def handle_getaddrs(self, count): if count > 100: count = 100 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 self.node.get_good_peers(count) ]) message_getshares = pack.ComposedType([ ('hashes', pack.ListType(pack.IntType(256))), ('parents', pack.VarIntType()), ('stops', pack.ListType(pack.IntType(256))), ]) def handle_getshares(self, hashes, parents, stops): self.node.handle_get_shares(hashes, parents, stops, self) message_shares = pack.ComposedType([ ('shares', pack.ListType(p2pool_data.share_type)), ]) def handle_shares(self, shares): res = [] for share in shares: share_obj = p2pool_data.Share.from_share(share, self.node.net) share_obj.peer = self res.append(share_obj) self.node.handle_shares(res, self) def sendShares(self, shares, full=False): def att(f, **kwargs): try: f(**kwargs) except bitcoin_p2p.TooLong: att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems())) att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems())) if shares: att(self.send_shares, shares=[share.as_share() for share in shares]) def connectionLost(self, reason): if self.connected2: self.factory.proto_disconnected(self) self.connected2 = False self.factory.proto_lost_connection(self) class ServerFactory(protocol.ServerFactory): def __init__(self, node, max_conns): self.node = node self.max_conns = max_conns self.conns = set() self.running = False def buildProtocol(self, addr): if len(self.conns) >= self.max_conns: return None p = Protocol(self.node, True) p.factory = self return p def proto_made_connection(self, proto): self.conns.add(proto) def proto_lost_connection(self, proto): self.conns.remove(proto) def proto_connected(self, proto): self.node.got_conn(proto) def proto_disconnected(self, proto): self.node.lost_conn(proto) def start(self): assert not self.running self.running = True def attempt_listen(): if not self.running: return try: self.listen_port = reactor.listenTCP(self.node.port, self) except error.CannotListenError, e: print >>sys.stderr, 'Error binding to P2P port: %s. Retrying in 3 seconds.' % (e.socketError,) reactor.callLater(3, attempt_listen) attempt_listen() def stop(self): assert self.running self.running = False self.listen_port.stopListening() class ClientFactory(protocol.ClientFactory): def __init__(self, node, desired_conns, max_attempts): self.node = node self.desired_conns = desired_conns self.max_attempts = max_attempts self.attempts = {} self.conns = set() self.running = False def buildProtocol(self, addr): p = Protocol(self.node, False) p.factory = self return p def startedConnecting(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 def clientConnectionFailed(self, connector, reason): self.clientConnectionLost(connector, reason) def clientConnectionLost(self, connector, reason): 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] def proto_made_connection(self, proto): pass def proto_lost_connection(self, proto): pass def proto_connected(self, proto): self.conns.add(proto) self.node.got_conn(proto) def proto_disconnected(self, proto): self.conns.remove(proto) self.node.lost_conn(proto) def start(self): assert not self.running self.running = True self._think() def stop(self): assert self.running self.running = False @defer.inlineCallbacks def _think(self): while self.running: try: if len(self.conns) < self.desired_conns and len(self.attempts) < self.max_attempts and self.node.addr_store: (host, port), = self.node.get_good_peers(1) if (host, port) not in self.attempts: #print 'Trying to connect to', host, port reactor.connectTCP(host, port, self, timeout=5) except: log.err() yield deferral.sleep(random.expovariate(1/1)) class SingleClientFactory(protocol.ReconnectingClientFactory): def __init__(self, node): self.node = node def buildProtocol(self, addr): p = Protocol(self.node, incoming=False) p.factory = self return p def proto_made_connection(self, proto): pass def proto_lost_connection(self, proto): pass def proto_connected(self, proto): self.resetDelay() self.node.got_conn(proto) def proto_disconnected(self, proto): self.node.lost_conn(proto) class Node(object): def __init__(self, best_share_hash_func, port, net, addr_store={}, connect_addrs=set(), desired_outgoing_conns=10, max_outgoing_attempts=30, max_incoming_conns=50, preferred_storage=1000): self.best_share_hash_func = best_share_hash_func self.port = port self.net = net self.addr_store = dict(addr_store) self.connect_addrs = connect_addrs self.preferred_storage = preferred_storage self.nonce = random.randrange(2**64) self.peers = {} self.clientfactory = ClientFactory(self, desired_outgoing_conns, max_outgoing_attempts) self.serverfactory = ServerFactory(self, max_incoming_conns) self.running = False def start(self): if self.running: raise ValueError('already running') self.clientfactory.start() self.serverfactory.start() self.singleclientconnectors = [reactor.connectTCP(addr, port, SingleClientFactory(self)) for addr, port in self.connect_addrs] self.running = True self._think2() @defer.inlineCallbacks def _think2(self): while self.running: try: if len(self.addr_store) < self.preferred_storage and self.peers: random.choice(self.peers.values()).send_getaddrs(count=8) except: log.err() yield deferral.sleep(random.expovariate(1/20)) def stop(self): if not self.running: raise ValueError('already stopped') self.running = False self.clientfactory.stop() self.serverfactory.stop() for singleclientconnector in self.singleclientconnectors: singleclientconnector.factory.stopTrying() # XXX will this disconnect a current connection? del self.singleclientconnectors def got_conn(self, conn): if conn.nonce in self.peers: raise ValueError('already have peer') self.peers[conn.nonce] = conn print '%s connection to peer %s:%i established. p2pool version: %i %r' % ('Incoming' if conn.incoming else 'Outgoing', conn.addr[0], conn.addr[1], conn.other_version, conn.other_sub_version) 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.addr[0], conn.addr[1]) 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_shares(self, shares, peer): print 'handle_shares', (shares, peer) def handle_share_hashes(self, hashes, peer): print 'handle_share_hashes', (hashes, peer) def handle_get_shares(self, hashes, parents, stops, peer): print 'handle_get_shares', (hashes, parents, stops, peer) def get_good_peers(self, max_count): t = time.time() return [x[0] for x in sorted(self.addr_store.iteritems(), key=lambda (k, (services, first_seen, last_seen)): -max(3600, last_seen - first_seen)/max(3600, t - last_seen)*random.expovariate(1))][:max_count] 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='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()