def _handle_pkt(self, pkt):
if isinstance(pkt, messages.msg_version):
self.ver_pkt = pkt
self.last_useful = time.time()
return messages.msg_verack()
elif isinstance(pkt, messages.msg_ping):
return messages.msg_pong(nonce=pkt.nonce)
elif isinstance(pkt, messages.msg_verack):
self.verack_received = True
self.last_useful = time.time()
return None
elif isinstance(pkt, messages.msg_addr):
if len(pkt.addrs) > 10:
self._handle_addr(pkt)
return False # disconnect, we got what we wanted
else:
return None # usually either forwarded or self-announcement, neither is useful
elif isinstance(pkt, (messages.msg_getheaders, messages.msg_inv,
messages.msg_alert, messages.msg_getblocks)):
pass # irrelevant but common, don't want to spam log
else:
log.debug(f'other pkt from -> {self.ip}: {pkt}')
if self.pkt_count > 6 and not self.getaddr_sent:
self.getaddr_sent = True
# some clients advertise their own address first, and only then seem to properly react to getaddr
# and sometimes it seems to be unrelated to that, so just wait a few packets, then it usually
# works, except for clients that just don't reply at all, which also happens
# (which is why we have last_useful to expire connections that don't yield addresses in reasonable time)
return messages.msg_getaddr()
return None
def got_message(self, msg):
if msg.command == 'ping':
pong = msg_pong(nonce=msg.nonce)
self.sock.send(pong.to_bytes())
elif msg.command == 'inv':
for i in msg.inv:
# transaction/block/txlrequest/txlvote
if i.type in (1, 2, 4, 5):
gd = msg_getdata()
gd.inv.append(i)
self.sock.send(gd.to_bytes())
if msg.command in self.route:
self.route[msg.command](msg)
def got_message(self, msg):
if msg.command == 'ping':
pong = msg_pong(nonce=msg.nonce)
self.sock.send(pong.to_bytes())
elif msg.command == 'inv':
for i in msg.inv:
# transaction/block/txlrequest/txlvote
if i.type in (1, 2, 4, 5):
gd = msg_getdata()
gd.inv.append(i)
self.sock.send(gd.to_bytes())
if msg.command in self.route:
self.route[msg.command](msg)
def _process_message(self, **kwargs):
msg = MsgSerializable.stream_deserialize(Wrapper(self.my_socket))
if msg.command == b"version": # TODO conglomerate these message strings into a dictionary
# Send Verack
# print('version: ', msg.strSubVer, msg.nVersion)
self.my_socket.send( msg_verack().to_bytes() )
return "version"
elif msg.command == b"verack":
# print("verack: ", msg)
return "verack"
elif msg.command == b"inv":
pass
# print("inv: ", msg.inv)
# print(dir(msg))
# print(type(msg.inv))
elif msg.command == b"ping":
# print("ping: ", msg)
self.my_socket.send(msg_pong(msg.nonce).to_bytes())
elif msg.command == b"getheaders":
pass
# print("getheaders received ")
elif msg.command == b"addr": # TODO this needs multi-message support
# print("addr: size ", len(msg.addrs))
for address in msg.addrs:
node = Link(address.ip, address.port)
self.results.add(node)
return True
elif msg.command == b"getdata":
# print("getdata: ", msg.inv)
if 'transaction' not in kwargs:
return False
the_tx = kwargs['transaction']
for request in msg.inv:
if request.hash == the_tx.GetHash():
print(threading.current_thread().name,"sending tx: ", self.link)
# new message to send transaction
to_send = msg_tx()
to_send.tx = the_tx
self.my_socket.send(to_send.to_bytes())
# print("SENT OUR PC BRO TRANSACTION")
return "donedone"
else:
pass
# print("something else: ", msg.command, msg)
return False
def send_pong(self, ping: msg_ping, timeout: int = 1) -> bool:
'''
Sends pong message in response to ping message.
Args:
ping (bitcoin.messages.msg_ping): ping message that where received
timeout (int): timeout for communication with connected node
Returns:
bool: True if the message was sent, False otherwise.
Example:
>>> network.send_pong(ping_message)
True
'''
return self.send_message(
msg_pong(self.protocol_version.nVersion, ping.nonce), timeout)
def send_pong(self, ping, timeout: int = 1) -> bool:
return self.send_message(
msg_pong(self.protocol_version.nVersion, ping.nonce), timeout)
def got_message(self, message):
gevent.sleep()
if self.last_sent + 30 * 60 < time.time():
self.send_message(msg_ping(self.ver_send))
if verbose_recvmsg(message):
self.log.info("recv %s" % repr(message))
if message.command == b"version":
self.ver_send = min(PROTO_VERSION, message.nVersion)
if self.ver_send < MIN_PROTO_VERSION:
self.log.info("Obsolete version %d, closing" %
(self.ver_send, ))
self.handle_close()
return
self.remote_height = message.nStartingHeight
self.send_message(msg_verack(self.ver_send))
# if self.ver_send >= CADDR_TIME_VERSION:
# self.send_message(msg_getaddr(self.ver_send))
self.send_getblocks()
elif message.command == b'ping':
if self.ver_send > BIP0031_VERSION:
self.send_message(msg_pong(self.ver_send))
elif message.command == b"verack":
self.ver_recv = self.ver_send
self.send_message(msg_addr())
# self.send_getaddr()
elif message.command == b"inv":
# special message sent to kick getblocks
# if (len(message.inv) == 1 and
# message.inv[0].type == MSG_BLOCK and
# self.chaindb.haveblock(message.inv[0].hash, True)):
# self.send_getblocks(False)
# return
want = msg_getdata(self.ver_send)
for i in message.inv:
if i.type == 1:
want.inv.append(i)
elif i.type == 2:
want.inv.append(i)
# break #UNDO
self.last_want = i.hash
if len(want.inv):
self.send_message(want)
elif message.command == b"tx":
if self.chaindb.tx_is_orphan(message.tx):
self.log.info("MemPool: Ignoring orphan TX %s" %
(b2lx(message.tx.GetHash()), ))
# elif not self.chaindb.tx_signed(message.tx, None, True):
# self.log.info("MemPool: Ignoring failed-sig TX %s" % (b2lx(message.tx.GetHash()),))
else:
self.chaindb.mempool_add(message.tx)
elif message.command == b"block":
bhash = b2lx(message.block.GetHash())
self.chaindb.putblock(message.block)
# b = BytesIO()
# message.block.stream_serialize(b)
# s = b.getvalue()
# print(b2lx(s))
self.last_block_rx = time.time()
#UNDO
if self.last_want == 0:
gevent.spawn(self.send_getblocks)
elif bhash == b2lx(self.last_want):
gevent.spawn(self.send_getblocks)
elif message.command == b"getheaders":
self.getheaders(message)
# elif message.command == b"addr":
# if len(message.addrs) == 1:
# gevent.spawn(self.send_getblocks)
# for addr in message.addrs:
# host = '%s:%s' % (addr.ip, addr.port)
# if host not in self.addresses_seen:
# self.addresses_seen.append(host)
# elif message.command == b'tx':
# for idx, vout in enumerate(message.tx.vout):
# script = vout.scriptPubKey
# if len(script) >= 38 and script[:6] == bitcoin.core.WITNESS_COINBASE_SCRIPTPUBKEY_MAGIC:
# continue
# script = CScript(vout.scriptPubKey)
# if script.is_unspendable():
# print("Unspendable %s" % vout.scriptPubKey)
# if vout.scriptPubKey[:4] == b'j\x07\xfe\xab':
# print(vout.scriptPubKey[4:].decode('utf-8'))
# continue
last_blkmsg = time.time() - self.last_block_rx
if last_blkmsg > 5:
self.send_getblocks()
def got_message(self, message):
gevent.sleep()
if self.last_sent + 30 * 60 < time.time():
self.send_message(messages.msg_ping(self.ver_send))
self.log.debug("recv %s" % repr(message))
if message.command == "version":
self.ver_send = min(self.params.PROTO_VERSION, message.nVersion)
if self.ver_send < self.params.MIN_PROTO_VERSION:
self.log.info("Obsolete version %d, closing" %
(self.ver_send,))
self.handle_close()
return
if (self.ver_send >= self.params.NOBLKS_VERSION_START and
self.ver_send <= self.params.NOBLKS_VERSION_END):
self.getblocks_ok = False
self.remote_height = message.nStartingHeight
self.send_message(messages.msg_verack(self.ver_send))
if self.ver_send >= self.params.CADDR_TIME_VERSION:
self.send_message(messages.msg_getaddr(self.ver_send))
self.request_latest()
self.client_version = message.strSubVer
elif message.command == "verack":
self.ver_recv = self.ver_send
if self.ver_send >= self.params.MEMPOOL_GD_VERSION:
self.send_message(messages.msg_mempool())
elif message.command == "ping":
if self.ver_send > self.params.BIP0031_VERSION:
self.send_message(messages.msg_pong(self.ver_send))
elif message.command == "addr":
self.peermgr.new_addrs(message.addrs)
elif message.command == "inv":
# special message sent to kick getblocks
if (len(message.inv) == 1 and
message.inv[0].type == messages.MSG_BLOCK and
self.chaindb.haveblock(message.inv[0].hash, True)):
self.request_latest(False)
return
want = messages.msg_getdata(self.ver_send)
for i in message.inv:
if i.type == 1:
want.inv.append(i)
elif i.type == 2:
want.inv.append(i)
if len(want.inv):
self.send_message(want)
elif message.command == "tx":
if self.chaindb.tx_is_orphan(message.tx):
self.log.info(
"MemPool: Ignoring orphan TX {}"
.format(message.tx.GetHash().encode('hex')))
elif not self.chaindb.tx_signed(message.tx, None, True):
self.log.info(
"MemPool: Ignoring failed-sig TX {}"
.format(message.tx.GetHash().encode('hex')))
else:
self.mempool.add(message.tx)
elif message.command == "block":
self.chaindb.putblock(message.block)
self.last_block_rx = time.time()
elif message.command == "headers":
self.chaindb.putblock(message.block)
self.last_block_rx = time.time()
elif message.command == "getdata":
self.getdata(message)
elif message.command == "getblocks":
self.getblocks(message)
elif message.command == "getheaders":
self.getheaders(message)
elif message.command == "getaddr":
msg = messages.msg_addr()
msg.addrs = self.peermgr.random_addrs()
self.send_message(msg)
elif message.command == "mempool":
msg = messages.msg_inv()
for k in self.mempool.pool.iterkeys():
inv = net.CInv()
inv.type = messages.MSG_TX
inv.hash = k
msg.inv.append(inv)
if len(msg.inv) == 50000:
break
self.send_message(msg)
# if we haven't seen a 'block' message in a little while,
# and we're still not caught up, send another getblocks
last_blkmsg = time.time() - self.last_block_rx
if last_blkmsg > 5:
self.request_latest()
def got_message(self, message):
gevent.sleep()
if self.last_sent + 30 * 60 < time.time():
self.send_message(msg_ping(self.ver_send))
if verbose_recvmsg(message):
self.log.info("recv %s" % repr(message))
if message.command == b"version":
self.ver_send = min(PROTO_VERSION, message.nVersion)
if self.ver_send < MIN_PROTO_VERSION:
self.log.info("Obsolete version %d, closing" %
(self.ver_send, ))
self.handle_close()
return
self.remote_height = message.nStartingHeight
self.send_message(msg_verack(self.ver_send))
if self.ver_send >= CADDR_TIME_VERSION:
self.send_message(msg_getaddr(self.ver_send))
# self.send_getblocks()
elif message.command == b'ping':
if self.ver_send > BIP0031_VERSION:
self.send_message(msg_pong(self.ver_send))
elif message.command == b"verack":
self.ver_recv = self.ver_send
self.send_message(msg_addr())
self.send_getaddr()
elif message.command == b"inv":
# special message sent to kick getblocks
# if (len(message.inv) == 1 and
# message.inv[0].type == MSG_BLOCK and
# self.chaindb.haveblock(message.inv[0].hash, True)):
# self.send_getblocks(False)
# return
want = msg_getdata(self.ver_send)
for i in message.inv:
if i.type == 1:
want.inv.append(i)
elif i.type == 2:
want.inv.append(i)
self.last_want = i.hash
if len(want.inv):
self.send_message(want)
# elif message.command == b"block":
# bhash = b2lx(message.block.GetHash())
# self.chaindb.putblock(message.block)
# self.last_block_rx = time.time()
# if self.last_want == 0:
# gevent.spawn(self.send_getblocks)
# elif bhash == b2lx(self.last_want):
# gevent.spawn(self.send_getblocks)
elif message.command == b"addr":
self.peermgr.new_addrs(message.addrs)
for addr in message.addrs:
self.peermgr.add(addr.ip, addr.port)
elif message.command == b'getheaders':
self.send_message(msg_headers())
def got_message(self, message):
gevent.sleep()
if self.last_sent + 30 * 60 < time.time():
self.send_message(messages.msg_ping(self.ver_send))
self.log.debug("recv %s" % repr(message))
if message.command == "version":
self.ver_send = min(self.params.PROTO_VERSION, message.nVersion)
if self.ver_send < self.params.MIN_PROTO_VERSION:
self.log.info("Obsolete version %d, closing" %
(self.ver_send, ))
self.handle_close()
return
if (self.ver_send >= self.params.NOBLKS_VERSION_START
and self.ver_send <= self.params.NOBLKS_VERSION_END):
self.getblocks_ok = False
self.remote_height = message.nStartingHeight
self.send_message(messages.msg_verack(self.ver_send))
if self.ver_send >= self.params.CADDR_TIME_VERSION:
self.send_message(messages.msg_getaddr(self.ver_send))
self.request_latest()
self.client_version = message.strSubVer
elif message.command == "verack":
self.ver_recv = self.ver_send
if self.ver_send >= self.params.MEMPOOL_GD_VERSION:
self.send_message(messages.msg_mempool())
elif message.command == "ping":
if self.ver_send > self.params.BIP0031_VERSION:
self.send_message(messages.msg_pong(self.ver_send))
elif message.command == "addr":
self.peermgr.new_addrs(message.addrs)
elif message.command == "inv":
# special message sent to kick getblocks
if (len(message.inv) == 1
and message.inv[0].type == messages.MSG_BLOCK
and self.chaindb.haveblock(message.inv[0].hash, True)):
self.request_latest(False)
return
want = messages.msg_getdata(self.ver_send)
for i in message.inv:
if i.type == 1:
want.inv.append(i)
elif i.type == 2:
want.inv.append(i)
if len(want.inv):
self.send_message(want)
elif message.command == "tx":
if self.chaindb.tx_is_orphan(message.tx):
self.log.info("MemPool: Ignoring orphan TX {}".format(
message.tx.GetHash().encode('hex')))
elif not self.chaindb.tx_signed(message.tx, None, True):
self.log.info("MemPool: Ignoring failed-sig TX {}".format(
message.tx.GetHash().encode('hex')))
else:
self.mempool.add(message.tx)
elif message.command == "block":
self.chaindb.putblock(message.block)
self.last_block_rx = time.time()
elif message.command == "headers":
self.chaindb.putblock(message.block)
self.last_block_rx = time.time()
elif message.command == "getdata":
self.getdata(message)
elif message.command == "getblocks":
self.getblocks(message)
elif message.command == "getheaders":
self.getheaders(message)
elif message.command == "getaddr":
msg = messages.msg_addr()
msg.addrs = self.peermgr.random_addrs()
self.send_message(msg)
elif message.command == "mempool":
msg = messages.msg_inv()
for k in self.mempool.pool.iterkeys():
inv = net.CInv()
inv.type = messages.MSG_TX
inv.hash = k
msg.inv.append(inv)
if len(msg.inv) == 50000:
break
self.send_message(msg)
# if we haven't seen a 'block' message in a little while,
# and we're still not caught up, send another getblocks
last_blkmsg = time.time() - self.last_block_rx
if last_blkmsg > 5:
self.request_latest()
def handle_ping(self, ping_message):
# Respond with a pong message to a ping message
msg = msg_pong()
msg.nonce = ping_message.nonce
self.send_message(msg)
def run(self):
try:
self.s.connect((self.addr.ip, self.addr.port))
version_pkt(self.addr.ip, self.addr.port).stream_serialize(self.s)
except Exception as e:
print(e)
print("{}, {}: Version handshake failed with {}:{}".format(datetime.datetime.now(), self.name, self.addr.ip, self.addr.port))
self._stop_request.set()
# Make sure we dont send an addr or inv straight away
self.lastaddr = time.time()
self.lastinv = time.time()
while not self._stop_request.is_set():
# Send at most one of these three
if time.time() - self.lastping > PING_INTERVAL:
msg_ping(random.getrandbits(64)).stream_serialize(self.s)
self.lastping = time.time()
elif time.time() - self.lastaddr > ADDR_INTERVAL:
out = msg_addr()
# Grab 10 random addresses
with address_lock:
random_addresses = random.sample(addresses, min(10, len(addresses)))
for address in random_addresses:
caddr = CAddress()
# Lie a bit
caddr.nTime = int(time.time()) - random.randrange(300)
caddr.nServices = address.services
caddr.port = address.port
caddr.ip = address.ip
out.addrs.append(caddr)
out.stream_serialize(self.s)
self.lastaddr = time.time()
elif time.time() - self.lastinv > INV_INTERVAL:
out = msg_inv()
out_inv = CInv()
out_inv.type = BLOCK_TYPE
out_inv.hash = guess_latest_block()
out.inv = [out_inv]
out.stream_serialize(self.s)
self.lastinv = time.time()
try:
msg = MsgSerializable.stream_deserialize(self.s)
t = time.time()
if isinstance(msg, msg_version):
msg_verack().stream_serialize(self.s)
elif isinstance(msg, msg_verack):
print("{}, {}: Version handshake complete".format(datetime.datetime.now(), self.name))
elif isinstance(msg, msg_ping):
result = push({
"me": {
"ip": my_ipv4,
"port": my_port
},
"time": t,
"type": "ping",
"peer": {
"ip": self.addr.ip,
"port": self.addr.port
},
"last": {
"ping": self.lastping,
"inv": self.lastinv,
"addr": self.lastaddr
},
"raw": base64.b64encode(msg.to_bytes()).decode('utf-8'),
"data": msg.nonce
})
msg_pong(nonce=msg.nonce).stream_serialize(self.s)
elif isinstance(msg, msg_pong):
result = push({
"me": {
"ip": my_ipv4,
"port": my_port
},
"time": t,
"type": "pong",
"peer": {
"ip": self.addr.ip,
"port": self.addr.port
},
"last": {
"ping": self.lastping,
"inv": self.lastinv,
"addr": self.lastaddr
},
"raw": base64.b64encode(msg.to_bytes()).decode('utf-8'),
"data": msg.nonce
})
elif isinstance(msg, msg_getheaders):
pass
elif isinstance(msg, msg_alert):
pass
elif isinstance(msg, msg_inv):
if any(item.type == BLOCK_TYPE for item in msg.inv):
result = push({
"me": {
"ip": my_ipv4,
"port": my_port
},
"time": t,
"type": "inv",
"peer": {
"ip": self.addr.ip,
"port": self.addr.port
},
"last": {
"ping": self.lastping,
"inv": self.lastinv,
"addr": self.lastaddr
},
"raw": base64.b64encode(msg.to_bytes()).decode('utf-8'),
"data": [
{
"type": "block" if item.type == BLOCK_TYPE else "tx",
"hash": b2lx(item.hash)
} for item in msg.inv
]
})
for inv in msg.inv:
if inv.type == BLOCK_TYPE:
append_latest_block(inv.hash)
elif isinstance(msg, msg_addr):
discover_new_addresses(msg.addrs)
else:
print("{}, {}: Unhandled message type: {}".format(datetime.datetime.now(), self.name, msg.command.decode('utf-8')))
except socket.timeout:
continue
except SerializationTruncationError:
print("{}, {}: **************** Socket closed. ****************".format(datetime.datetime.now(), self.name))
break
self.s.close()
print("{}, {}: Stopped.".format(datetime.datetime.now(), self.name))