Implementation of Bitcoin's p2p protocol
'''
-from __future__ import division
-
-import hashlib
import random
-import struct
+import sys
import time
-import traceback
-from twisted.internet import protocol, reactor
+from twisted.internet import protocol
+import p2pool
from . import data as bitcoin_data
-from p2pool.util import variable, datachunker, deferral
-
-class BaseProtocol(protocol.Protocol):
- def connectionMade(self):
- self.dataReceived = datachunker.DataChunker(self.dataReceiver())
-
- def dataReceiver(self):
- while True:
- start = ''
- while start != self._prefix:
- start = (start + (yield 1))[-len(self._prefix):]
-
- command = (yield 12).rstrip('\0')
- length, = struct.unpack('<I', (yield 4))
-
- if self.use_checksum:
- checksum = yield 4
- else:
- checksum = None
-
- payload = yield length
-
- if checksum is not None:
- if hashlib.sha256(hashlib.sha256(payload).digest()).digest()[:4] != checksum:
- print 'RECV', command, checksum.encode('hex') if checksum is not None else None, repr(payload.encode('hex')), len(payload)
- print 'INVALID HASH'
- continue
-
- type_ = getattr(self, "message_" + command, None)
- if type_ is None:
- print 'RECV', command, checksum.encode('hex') if checksum is not None else None, repr(payload.encode('hex')), len(payload)
- print 'NO TYPE FOR', repr(command)
- continue
-
- try:
- payload2 = type_.unpack(payload)
- except:
- print 'RECV', command, checksum.encode('hex') if checksum is not None else None, repr(payload.encode('hex')), len(payload)
- traceback.print_exc()
- continue
-
- handler = getattr(self, 'handle_' + command, None)
- if handler is None:
- print 'RECV', command, checksum.encode('hex') if checksum is not None else None, repr(payload.encode('hex')), len(payload)
- print 'NO HANDLER FOR', command
- continue
-
- #print 'RECV', command, payload2
-
- try:
- handler(**payload2)
- except:
- print 'RECV', command, checksum.encode('hex') if checksum is not None else None, repr(payload.encode('hex')), len(payload)
- traceback.print_exc()
- continue
-
- def sendPacket(self, command, payload2={}):
- type_ = getattr(self, "message_" + command, None)
- if type_ is None:
- raise ValueError('invalid command')
- payload = type_.pack(payload2)
- if len(command) >= 12:
- raise ValueError('command too long')
- if self.use_checksum:
- checksum = hashlib.sha256(hashlib.sha256(payload).digest()).digest()[:4]
- else:
- checksum = ''
- data = self._prefix + struct.pack('<12sI', command, len(payload)) + checksum + payload
- self.transport.write(data)
- #print 'SEND', command, payload2
-
- def __getattr__(self, attr):
- prefix = 'send_'
- if attr.startswith(prefix):
- command = attr[len(prefix):]
- return lambda **payload2: self.sendPacket(command, payload2)
- #return protocol.Protocol.__getattr__(self, attr)
- raise AttributeError(attr)
+from p2pool.util import deferral, p2protocol, pack, variable
-class Protocol(BaseProtocol):
+class Protocol(p2protocol.Protocol):
def __init__(self, net):
- self._prefix = net.BITCOIN_P2P_PREFIX
-
- version = 0
-
- @property
- def use_checksum(self):
- return self.version >= 209
-
- message_version = bitcoin_data.ComposedType([
- ('version', bitcoin_data.StructType('<I')),
- ('services', bitcoin_data.StructType('<Q')),
- ('time', bitcoin_data.StructType('<Q')),
- ('addr_to', bitcoin_data.address_type),
- ('addr_from', bitcoin_data.address_type),
- ('nonce', bitcoin_data.StructType('<Q')),
- ('sub_version_num', bitcoin_data.VarStrType()),
- ('start_height', bitcoin_data.StructType('<I')),
- ])
- message_verack = bitcoin_data.ComposedType([])
- message_addr = bitcoin_data.ComposedType([
- ('addrs', bitcoin_data.ListType(bitcoin_data.ComposedType([
- ('timestamp', bitcoin_data.StructType('<I')),
- ('address', bitcoin_data.address_type),
- ]))),
- ])
- message_inv = bitcoin_data.ComposedType([
- ('invs', bitcoin_data.ListType(bitcoin_data.ComposedType([
- ('type', bitcoin_data.EnumType(bitcoin_data.StructType('<I'), {'tx': 1, 'block': 2})),
- ('hash', bitcoin_data.HashType()),
- ]))),
- ])
- message_getdata = bitcoin_data.ComposedType([
- ('requests', bitcoin_data.ListType(bitcoin_data.ComposedType([
- ('type', bitcoin_data.EnumType(bitcoin_data.StructType('<I'), {'tx': 1, 'block': 2})),
- ('hash', bitcoin_data.HashType()),
- ]))),
- ])
- message_getblocks = bitcoin_data.ComposedType([
- ('version', bitcoin_data.StructType('<I')),
- ('have', bitcoin_data.ListType(bitcoin_data.HashType())),
- ('last', bitcoin_data.HashType()),
- ])
- message_getheaders = bitcoin_data.ComposedType([
- ('version', bitcoin_data.StructType('<I')),
- ('have', bitcoin_data.ListType(bitcoin_data.HashType())),
- ('last', bitcoin_data.HashType()),
- ])
- message_tx = bitcoin_data.ComposedType([
- ('tx', bitcoin_data.tx_type),
- ])
- message_block = bitcoin_data.ComposedType([
- ('block', bitcoin_data.block_type),
- ])
- message_headers = bitcoin_data.ComposedType([
- ('headers', bitcoin_data.ListType(bitcoin_data.block_header_type)),
- ])
- message_getaddr = bitcoin_data.ComposedType([])
- message_checkorder = bitcoin_data.ComposedType([
- ('id', bitcoin_data.HashType()),
- ('order', bitcoin_data.FixedStrType(60)), # XXX
- ])
- message_submitorder = bitcoin_data.ComposedType([
- ('id', bitcoin_data.HashType()),
- ('order', bitcoin_data.FixedStrType(60)), # XXX
- ])
- message_reply = bitcoin_data.ComposedType([
- ('hash', bitcoin_data.HashType()),
- ('reply', bitcoin_data.EnumType(bitcoin_data.StructType('<I'), {'success': 0, 'failure': 1, 'denied': 2})),
- ('script', bitcoin_data.VarStrType()),
- ])
- message_ping = bitcoin_data.ComposedType([])
- message_alert = bitcoin_data.ComposedType([
- ('message', bitcoin_data.VarStrType()),
- ('signature', bitcoin_data.VarStrType()),
- ])
-
- null_order = '\0'*60
+ p2protocol.Protocol.__init__(self, net.P2P_PREFIX, 1000000, ignore_trailing_payload=True)
def connectionMade(self):
- BaseProtocol.connectionMade(self)
-
self.send_version(
- version=32200,
+ version=70002,
services=1,
time=int(time.time()),
addr_to=dict(
services=1,
- address='::ffff:' + self.transport.getPeer().host,
+ address=self.transport.getPeer().host,
port=self.transport.getPeer().port,
),
addr_from=dict(
services=1,
- address='::ffff:' + self.transport.getHost().host,
+ address=self.transport.getHost().host,
port=self.transport.getHost().port,
),
nonce=random.randrange(2**64),
- sub_version_num='',
+ sub_version_num='/P2Pool:%s/' % (p2pool.__version__,),
start_height=0,
)
+ message_version = pack.ComposedType([
+ ('version', pack.IntType(32)),
+ ('services', pack.IntType(64)),
+ ('time', pack.IntType(64)),
+ ('addr_to', bitcoin_data.address_type),
+ ('addr_from', bitcoin_data.address_type),
+ ('nonce', pack.IntType(64)),
+ ('sub_version_num', pack.VarStrType()),
+ ('start_height', pack.IntType(32)),
+ ])
def handle_version(self, version, services, time, addr_to, addr_from, nonce, sub_version_num, start_height):
- #print 'VERSION', locals()
- self.version_after = version
self.send_verack()
+ message_verack = pack.ComposedType([])
def handle_verack(self):
- self.version = self.version_after
-
- # connection ready
- self.check_order = deferral.GenericDeferrer(2**256, lambda id, order: self.send_checkorder(id=id, order=order))
- self.submit_order = deferral.GenericDeferrer(2**256, lambda id, order: self.send_submitorder(id=id, order=order))
self.get_block = deferral.ReplyMatcher(lambda hash: self.send_getdata(requests=[dict(type='block', hash=hash)]))
- self.get_block_header = deferral.ReplyMatcher(lambda hash: self.send_getdata(requests=[dict(type='block', hash=hash)]))
+ self.get_block_header = deferral.ReplyMatcher(lambda hash: self.send_getheaders(version=1, have=[], last=hash))
if hasattr(self.factory, 'resetDelay'):
self.factory.resetDelay()
if hasattr(self.factory, 'gotConnection'):
self.factory.gotConnection(self)
+
+ self.pinger = deferral.RobustLoopingCall(self.send_ping, nonce=1234)
+ self.pinger.start(30)
+ message_inv = pack.ComposedType([
+ ('invs', pack.ListType(pack.ComposedType([
+ ('type', pack.EnumType(pack.IntType(32), {1: 'tx', 2: 'block'})),
+ ('hash', pack.IntType(256)),
+ ]))),
+ ])
def handle_inv(self, invs):
for inv in invs:
- #print 'INV', item['type'], hex(item['hash'])
- self.send_getdata(requests=[inv])
+ if inv['type'] == 'tx':
+ self.send_getdata(requests=[inv])
+ elif inv['type'] == 'block':
+ self.factory.new_block.happened(inv['hash'])
+ else:
+ print 'Unknown inv type', inv
+
+ message_getdata = pack.ComposedType([
+ ('requests', pack.ListType(pack.ComposedType([
+ ('type', pack.EnumType(pack.IntType(32), {1: 'tx', 2: 'block'})),
+ ('hash', pack.IntType(256)),
+ ]))),
+ ])
+ message_getblocks = pack.ComposedType([
+ ('version', pack.IntType(32)),
+ ('have', pack.ListType(pack.IntType(256))),
+ ('last', pack.PossiblyNoneType(0, pack.IntType(256))),
+ ])
+ message_getheaders = pack.ComposedType([
+ ('version', pack.IntType(32)),
+ ('have', pack.ListType(pack.IntType(256))),
+ ('last', pack.PossiblyNoneType(0, pack.IntType(256))),
+ ])
+ message_getaddr = pack.ComposedType([])
+ message_addr = pack.ComposedType([
+ ('addrs', pack.ListType(pack.ComposedType([
+ ('timestamp', pack.IntType(32)),
+ ('address', bitcoin_data.address_type),
+ ]))),
+ ])
def handle_addr(self, addrs):
for addr in addrs:
- pass#print 'ADDR', addr
-
- def handle_reply(self, hash, reply, script):
- self.check_order.got_response(hash, dict(reply=reply, script=script))
- self.submit_order.got_response(hash, dict(reply=reply, script=script))
+ pass
+ message_tx = pack.ComposedType([
+ ('tx', bitcoin_data.tx_type),
+ ])
def handle_tx(self, tx):
- #print 'TX', hex(merkle_hash([tx])), tx
self.factory.new_tx.happened(tx)
+ message_block = pack.ComposedType([
+ ('block', bitcoin_data.block_type),
+ ])
def handle_block(self, block):
- self.get_block.got_response(bitcoin_data.block_hash(block['header']), block)
- self.factory.new_block.happened(block)
+ block_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(block['header']))
+ self.get_block.got_response(block_hash, block)
+ self.get_block_header.got_response(block_hash, block['header'])
- def handle_ping(self):
+ message_headers = pack.ComposedType([
+ ('headers', pack.ListType(bitcoin_data.block_type)),
+ ])
+ def handle_headers(self, headers):
+ for header in headers:
+ header = header['header']
+ self.get_block_header.got_response(bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header)), header)
+ self.factory.new_headers.happened([header['header'] for header in headers])
+
+ message_ping = pack.ComposedType([
+ ('nonce', pack.IntType(64)),
+ ])
+ def handle_ping(self, nonce):
+ self.send_pong(nonce=nonce)
+
+ message_pong = pack.ComposedType([
+ ('nonce', pack.IntType(64)),
+ ])
+ def handle_pong(self, nonce):
pass
+ message_alert = pack.ComposedType([
+ ('message', pack.VarStrType()),
+ ('signature', pack.VarStrType()),
+ ])
+ def handle_alert(self, message, signature):
+ pass # print 'ALERT:', (message, signature)
+
def connectionLost(self, reason):
if hasattr(self.factory, 'gotConnection'):
self.factory.gotConnection(None)
+ if hasattr(self, 'pinger'):
+ self.pinger.stop()
+ if p2pool.DEBUG:
+ print >>sys.stderr, 'Bitcoin connection lost. Reason:', reason.getErrorMessage()
class ClientFactory(protocol.ReconnectingClientFactory):
protocol = Protocol
- maxDelay = 15
+ maxDelay = 1
def __init__(self, net):
self.net = net
self.new_block = variable.Event()
self.new_tx = variable.Event()
+ self.new_headers = variable.Event()
def buildProtocol(self, addr):
p = self.protocol(self.net)
def getProtocol(self):
return self.conn.get_not_none()
-
-if __name__ == '__main__':
- factory = ClientFactory()
- reactor.connectTCP('127.0.0.1', 8333, factory)
-
- reactor.run()