def messageHandler(self, clientsocket, addr):
while True:
dataReceived = clientsocket.recv(1024)
if not dataReceived:
#will close the socket
break;
msg = MsgSerializable().from_bytes(dataReceived)
print('received ',msg)
print( isinstance(msg,msg_version))
if isinstance(msg,msg_version):
clientsocket.send(msg_verack().to_bytes())
self.inbound_connections.add(addr[0])
print('sent verack')
clientsocket.send( messages.version_pkt(MY_IP, addr[0],self.port).to_bytes() )
print('sent version_pkt')
if isinstance(msg,msg_getaddr):
perrAddrs = []
for peer in self.inbound_connections:
perrAddr = CAddress()
perrAddr.port=self.port
perrAddr.nTime = int(time.time())
perrAddr.ip = peer
perrAddrs.append(perrAddr)
rMsg= msg_addr()
rMsg.addrs = perrAddrs
print(rMsg)
clientsocket.send(rMsg.to_bytes())
print('sent msg_addr')
time.sleep(SLEEP_TIME)
clientsocket.close()
def addr_pkt(str_addrs):
msg = msg_addr()
addrs = []
for i in str_addrs:
addr = CAddress()
addr.port = 8333
addr.nTime = int(time.time())
addr.ip = i
addrs.append(addr)
msg.addrs = addrs
return msg
def addr_pkt( str_addrs ):
msg = msg_addr()
addrs = []
for i in str_addrs:
addr = CAddress()
addr.port = 18333
addr.nTime = int(time.time())
addr.ip = i
addrs.append( addr )
msg.addrs = addrs
return msg
def test_serializationIPv6(self):
c = CAddress()
c.ip = "1234:ABCD:1234:ABCD:1234:00:ABCD:1234"
c.port = 8333
c.nTime = 1420576401
cSerialized = c.serialize()
cDeserialized = CAddress.deserialize(cSerialized)
self.assertEqual(c, cDeserialized)
cSerializedTwice = cDeserialized.serialize()
self.assertEqual(cSerialized, cSerializedTwice)
def test_serializationIPv6(self):
c = CAddress()
c.ip = "1234:ABCD:1234:ABCD:1234:00:ABCD:1234"
c.port = 8333
c.nTime = 1420576401
cSerialized = c.serialize()
cDeserialized = CAddress.deserialize(cSerialized)
self.assertEqual(c, cDeserialized)
cSerializedTwice = cDeserialized.serialize()
self.assertEqual(cSerialized, cSerializedTwice)
def test_serializationDiff(self):
# Sanity check that the serialization code preserves differences
c1 = CAddress()
c1.ip = "1.1.1.1"
c1.port = 8333
c1.nTime = 1420576401
c2 = CAddress()
c2.ip = "1.1.1.2"
c2.port = 8333
c2.nTime = 1420576401
self.assertNotEqual(c1, c2)
c1Serialized = c1.serialize()
c2Serialized = c2.serialize()
self.assertNotEqual(c1Serialized, c2Serialized)
c1Deserialized = CAddress.deserialize(c1Serialized)
c2Deserialized = CAddress.deserialize(c2Serialized)
self.assertNotEqual(c1Deserialized, c2Deserialized)
def test_serializationDiff(self):
# Sanity check that the serialization code preserves differences
c1 = CAddress()
c1.ip = "1.1.1.1"
c1.port = 8333
c1.nTime = 1420576401
c2 = CAddress()
c2.ip = "1.1.1.2"
c2.port = 8333
c2.nTime = 1420576401
self.assertNotEqual(c1, c2)
c1Serialized = c1.serialize()
c2Serialized = c2.serialize()
self.assertNotEqual(c1Serialized, c2Serialized)
c1Deserialized = CAddress.deserialize(c1Serialized)
c2Deserialized = CAddress.deserialize(c2Serialized)
self.assertNotEqual(c1Deserialized, c2Deserialized)
def btc_addr_pkt(s, str_addrs):
pkt = msg_addr()
addrs = []
for i in str_addrs:
addr = CAddress()
addr.port = s.dport
addr.nTime = int(time.time())
addr.ip = i
addrs.append( addr )
pkt.addrs = addrs
pkt.to_bytes()
return s.btc_add_magic(pkt)
def do_connect(client_addr, server_addr, nonce):
global INV_SEND_TS, g_ver_ts, g_getaddr_send_ts
with socket.socket() as sock:
sock.connect((server_addr, PORT))
with sock.makefile(mode='rwb') as fake_fil:
send_pkt(fake_fil, version_pkt(client_addr, server_addr, nonce))
remote_ver = recv_pkt(fake_fil)
print(f'nonce: {remote_ver.nNonce}')
send_pkt(fake_fil, msg_verack())
i = 0
try:
while True:
if i == 3:
g_getaddr_send_ts = time.time()
print("sending getaddr!")
send_pkt(fake_fil, msg_getaddr())
elif i == 5:
print(f"sending inv for {b2lx(FAKE_TX_HASH)}!")
pkt = msg_inv()
inv = CInv()
inv.type = 1 # TX
inv.hash = FAKE_TX_HASH
pkt.inv.append(inv)
INV_SEND_TS = time.time()
send_pkt(fake_fil, pkt)
elif i == 4:
print(f"sending marker ips")
pkt = msg_addr()
for fake_ip in gen_fake_ips(RUN_ID, 78, 0xf):
addr = CAddress()
addr.ip = fake_ip
addr.port = 9 # discard
addr.nTime = g_ver_ts
addr.nServices = 1 # NODE_NETWORK, otherwise they won't always accept the addr
pkt.addrs.append(addr)
send_pkt(fake_fil, pkt)
recv_pkt(fake_fil)
i += 1
except KeyboardInterrupt:
pass
return remote_ver.nNonce
def local_caddress(self):
caddress = CAddress()
caddress.nTime = self.connect_time
caddress.ip = self.local_address.host
caddress.port = self.local_address.port
return caddress
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))
