import math
import random
+import sys
import time
from twisted.internet import defer, protocol, reactor
class PeerMisbehavingError(Exception):
pass
+
+def fragment(f, **kwargs):
+ try:
+ return f(**kwargs)
+ except p2protocol.TooLong:
+ fragment(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
+ return fragment(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
+
class Protocol(p2protocol.Protocol):
+ max_remembered_txs_size = 2500000
+
def __init__(self, node, incoming):
p2protocol.Protocol.__init__(self, node.net.PREFIX, 1000000, node.traffic_happened)
self.node = node
self.addr = self.transport.getPeer().host, self.transport.getPeer().port
self.send_version(
- version=4,
+ version=1000,
services=0,
addr_to=dict(
services=0,
)
self.remote_tx_hashes = set() # view of peer's known_txs # not actually initially empty, but sending txs instead of tx hashes won't hurt
+ self.remote_remembered_txs_size = 0
+
self.remembered_txs = {} # view of peer's mining_txs
+ self.remembered_txs_size = 0
+ self.known_txs_cache = {}
def _connect_timeout(self):
self.timeout_delayed = None
if p2pool.DEBUG:
print "Bad peer banned:", self.addr
self.transport.loseConnection()
- self.node.bans[self.transport.getPeer().host] = time.time() + 60*60
+ if self.transport.getPeer().host != '127.0.0.1': # never ban localhost
+ self.node.bans[self.transport.getPeer().host] = time.time() + 60*60
def _timeout(self):
self.timeout_delayed = None
def handle_version(self, version, services, addr_to, addr_from, nonce, sub_version, mode, best_share_hash):
if self.other_version is not None:
raise PeerMisbehavingError('more than one version message')
- if version < 4:
+ if version < 8:
raise PeerMisbehavingError('peer too old')
self.other_version = version
random.expovariate(1/100)][-1])
self._stop_thread2 = deferral.run_repeatedly(lambda: [
- self.send_addrme(port=self.node.port),
+ self.send_addrme(port=self.node.serverfactory.listen_port.getHost().port) if self.node.serverfactory.listen_port is not None else None,
random.expovariate(1/(100*len(self.node.peers) + 1))][-1])
if best_share_hash is not None:
self.node.handle_share_hashes([best_share_hash], self)
+ if self.other_version < 8:
+ return
+
def update_remote_view_of_my_known_txs(before, after):
added = set(after) - set(before)
removed = set(before) - set(after)
self.send_have_tx(tx_hashes=list(added))
if removed:
self.send_losing_tx(tx_hashes=list(removed))
- # XXX cache locally
+
+ # cache forgotten txs here for a little while so latency of "losing_tx" packets doesn't cause problems
+ key = max(self.known_txs_cache) + 1 if self.known_txs_cache else 0
+ self.known_txs_cache[key] = dict((h, before[h]) for h in removed)
+ reactor.callLater(20, self.known_txs_cache.pop, key)
watch_id = self.node.known_txs_var.transitioned.watch(update_remote_view_of_my_known_txs)
self.connection_lost_event.watch(lambda: self.node.known_txs_var.transitioned.unwatch(watch_id))
added = set(after) - set(before)
removed = set(before) - set(after)
if added:
- self.send_remember_tx(tx_hashes=[x for x in added if x in self.remote_tx_hashes], txs=[after[x] for x in added if x not in self.remote_tx_hashes])
+ self.remote_remembered_txs_size += sum(100 + bitcoin_data.tx_type.packed_size(after[x]) for x in added)
+ assert self.remote_remembered_txs_size <= self.max_remembered_txs_size
+ fragment(self.send_remember_tx, tx_hashes=[x for x in added if x in self.remote_tx_hashes], txs=[after[x] for x in added if x not in self.remote_tx_hashes])
if removed:
- self.send_forget_tx(tx_hashes=removed)
+ self.send_forget_tx(tx_hashes=list(removed))
+ self.remote_remembered_txs_size -= sum(100 + bitcoin_data.tx_type.packed_size(before[x]) for x in removed)
watch_id2 = self.node.mining_txs_var.transitioned.watch(update_remote_view_of_my_mining_txs)
self.connection_lost_event.watch(lambda: self.node.mining_txs_var.transitioned.unwatch(watch_id2))
- self.send_remember_tx(tx_hashes=[], txs=self.node.mining_txs_var.value.values())
+ self.remote_remembered_txs_size += sum(100 + bitcoin_data.tx_type.packed_size(x) for x in self.node.mining_txs_var.value.values())
+ assert self.remote_remembered_txs_size <= self.max_remembered_txs_size
+ fragment(self.send_remember_tx, tx_hashes=[], txs=self.node.mining_txs_var.value.values())
message_ping = pack.ComposedType([])
def handle_ping(self):
('shares', pack.ListType(p2pool_data.share_type)),
])
def handle_shares(self, shares):
- self.node.handle_shares([p2pool_data.load_share(share, self.node.net, self) for share in shares if share['type'] not in [6, 7]], self)
-
- def sendShares(self, shares):
- def att(f, **kwargs):
- try:
- return f(**kwargs)
- except p2protocol.TooLong:
- att(f, **dict((k, v[:len(v)//2]) for k, v in kwargs.iteritems()))
- return att(f, **dict((k, v[len(v)//2:]) for k, v in kwargs.iteritems()))
- if shares:
- return att(self.send_shares, shares=[share.as_share() for share in shares])
- else:
+ self.node.handle_shares([p2pool_data.load_share(share, self.node.net, self) for share in shares if share['type'] >= 9], self)
+
+ def sendShares(self, shares, tracker, known_txs, include_txs_with=[]):
+ if not shares:
return defer.succeed(None)
+
+ if self.other_version >= 8:
+ tx_hashes = set()
+ for share in shares:
+ if share.hash in include_txs_with:
+ x = share.get_other_tx_hashes(tracker)
+ if x is not None:
+ tx_hashes.update(x)
+
+ hashes_to_send = [x for x in tx_hashes if x not in self.node.mining_txs_var.value and x in known_txs]
+
+ new_remote_remembered_txs_size = self.remote_remembered_txs_size + sum(100 + bitcoin_data.tx_type.packed_size(known_txs[x]) for x in hashes_to_send)
+ if new_remote_remembered_txs_size > self.max_remembered_txs_size:
+ raise ValueError('shares have too many txs')
+ self.remote_remembered_txs_size = new_remote_remembered_txs_size
+
+ fragment(self.send_remember_tx, tx_hashes=[x for x in hashes_to_send if x in self.remote_tx_hashes], txs=[known_txs[x] for x in hashes_to_send if x not in self.remote_tx_hashes])
+
+ res = fragment(self.send_shares, shares=[share.as_share() for share in shares])
+
+ if self.other_version >= 8:
+ res = self.send_forget_tx(tx_hashes=hashes_to_send)
+
+ self.remote_remembered_txs_size -= sum(100 + bitcoin_data.tx_type.packed_size(known_txs[x]) for x in hashes_to_send)
+
+ return res
message_sharereq = pack.ComposedType([
])
def handle_sharereply(self, id, result, shares):
if result == 'good':
- res = [p2pool_data.load_share(share, self.node.net, self) for share in shares if share['type'] not in [6, 7]]
+ res = [p2pool_data.load_share(share, self.node.net, self) for share in shares if share['type'] >= 9]
else:
res = failure.Failure("sharereply result: " + result)
self.get_shares.got_response(id, res)
('tx_hashes', pack.ListType(pack.IntType(256))),
])
def handle_have_tx(self, tx_hashes):
+ #assert self.remote_tx_hashes.isdisjoint(tx_hashes)
self.remote_tx_hashes.update(tx_hashes)
+ while len(self.remote_tx_hashes) > 10000:
+ self.remote_tx_hashes.pop()
message_losing_tx = pack.ComposedType([
('tx_hashes', pack.ListType(pack.IntType(256))),
])
def handle_losing_tx(self, tx_hashes):
+ #assert self.remote_tx_hashes.issuperset(tx_hashes)
self.remote_tx_hashes.difference_update(tx_hashes)
])
def handle_remember_tx(self, tx_hashes, txs):
for tx_hash in tx_hashes:
- if tx_hash not in self.remembered_txs:
- self.remembered_txs[tx_hash] = self.node.known_txs_var.value[tx_hash]
+ if tx_hash in self.remembered_txs:
+ print >>sys.stderr, 'Peer referenced transaction twice, disconnecting'
+ self.transport.loseConnection()
+ return
+
+ if tx_hash in self.node.known_txs_var.value:
+ tx = self.node.known_txs_var.value[tx_hash]
+ else:
+ for cache in self.known_txs_cache.itervalues():
+ if tx_hash in cache:
+ tx = cache[tx_hash]
+ print 'Transaction %064x rescued from peer latency cache!' % (tx_hash,)
+ break
+ else:
+ print >>sys.stderr, 'Peer referenced unknown transaction %064x, disconnecting' % (tx_hash,)
+ self.transport.loseConnection()
+ return
+
+ self.remembered_txs[tx_hash] = tx
+ self.remembered_txs_size += 100 + bitcoin_data.tx_type.packed_size(tx)
new_known_txs = dict(self.node.known_txs_var.value)
+ warned = False
for tx in txs:
tx_hash = bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx))
- if tx_hash not in self.remembered_txs:
- self.remembered_txs[tx_hash] = tx
+ if tx_hash in self.remembered_txs:
+ print >>sys.stderr, 'Peer referenced transaction twice, disconnecting'
+ self.transport.loseConnection()
+ return
+
+ if tx_hash in self.node.known_txs_var.value and not warned:
+ print 'Peer sent entire transaction %064x that was already received' % (tx_hash,)
+ warned = True
+
+ self.remembered_txs[tx_hash] = tx
+ self.remembered_txs_size += 100 + bitcoin_data.tx_type.packed_size(tx)
new_known_txs[tx_hash] = tx
self.node.known_txs_var.set(new_known_txs)
+ if self.remembered_txs_size >= self.max_remembered_txs_size:
+ raise PeerMisbehavingError('too much transaction data stored')
message_forget_tx = pack.ComposedType([
('tx_hashes', pack.ListType(pack.IntType(256))),
])
def handle_forget_tx(self, tx_hashes):
for tx_hash in tx_hashes:
+ self.remembered_txs_size -= 100 + bitcoin_data.tx_type.packed_size(self.remembered_txs[tx_hash])
+ assert self.remembered_txs_size >= 0
del self.remembered_txs[tx_hash]
self.conns = {}
self.running = False
+ self.listen_port = None
def buildProtocol(self, addr):
if sum(self.conns.itervalues()) >= self.max_conns or self.conns.get(self._host_to_ident(addr.host), 0) >= 3:
self.node.lost_conn(proto, reason)
class Node(object):
- def __init__(self, best_share_hash_func, port, net, known_txs_var=variable.Variable({}), mining_txs_var=variable.Variable({}), addr_store={}, connect_addrs=set(), desired_outgoing_conns=10, max_outgoing_attempts=30, max_incoming_conns=50, preferred_storage=1000, traffic_happened=variable.Event()):
+ 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, known_txs_var=variable.Variable({}), mining_txs_var=variable.Variable({})):
self.best_share_hash_func = best_share_hash_func
self.port = port
self.net = net
- self.known_txs_var = known_txs_var
- self.mining_txs_var = mining_txs_var
self.addr_store = dict(addr_store)
self.connect_addrs = connect_addrs
self.preferred_storage = preferred_storage
- self.traffic_happened = traffic_happened
+ self.known_txs_var = known_txs_var
+ self.mining_txs_var = mining_txs_var
+ self.traffic_happened = variable.Event()
self.nonce = random.randrange(2**64)
self.peers = {}
self.bans = {} # address -> end_time
git://git.novaco.in / p2pool.git / blobdiff