def send_inventory(self, serialized_transaction) -> msg_getdata:
message = msg_inv()
inventory = CInv()
inventory.type = MSG_TX
hash_transaction = Hash(serialized_transaction)
inventory.hash = hash_transaction
message.inv.append(inventory)
timeout = time() + NODE_COMMUNICATION_TIMEOUT
while time() < timeout:
node = self.connect()
if node is None:
self.reset_connection()
continue
if not self.send_message(message):
self.terminate(node)
continue
messages = self.capture_messages([
msg_getdata,
])
if not messages:
self.terminate(node)
continue
logger.info('[%s] Node responded correctly.', node)
return messages[0]
def test_getdata_message_with_two_blocks(self):
cblock1 = CBlock()
block1 = Block(cblock1, BlockOrigin.private)
block1.cblock = cblock1
cInv1 = CInv()
cInv1.type = networking.inv_typemap['Block']
cInv1.hash = cblock1.GetHash()
cblock2 = CBlock()
block2 = Block(cblock2, BlockOrigin.private)
block2.cblock = cblock2
cInv2 = CInv()
cInv2.type = networking.inv_typemap['Block']
cInv2.hash = cblock2.GetHash()
message = messages.msg_getdata()
message.inv = [cInv1, cInv2]
self.chain.blocks = {
cblock1.GetHash(): block1,
cblock2.GetHash(): block2
}
self.networking.getdata_message(self.public_connection1, message)
self.assertTrue(self.public_connection1.send.called)
self.assertEqual(self.public_connection1.send.call_count, 2)
def test_getdata_message_without_tx(self):
message = messages.msg_getdata()
inv = CInv()
inv.type = networking.inv_typemap['TX']
inv.hash = 'hash1'
message.inv = [inv]
self.networking.get_tx = MagicMock()
self.networking.get_tx.return_value = None
self.networking.getdata_message(self.public_connection1, message)
self.assertFalse(self.private_connection.send.called)
self.assertFalse(self.public_connection1.send.called)
self.assertFalse(self.public_connection2.send.called)
def send_transaction(self):
import createTransaction
tx = createTransaction.make_self_transaction()
inv_msg = msg_inv()
tx_inv = CInv()
tx_inv.type = 1
tx_inv.hash = tx.GetHash()
inv_msg.inv.append(tx_inv)
self.my_socket.send(inv_msg.to_bytes())
iterations = 0
while self._process_message(transaction=tx) != "donedone" and iterations < 50:
pass
if iterations > 45:
print("stuck on send? tid: ", threading.get_ident(), '\n\ttarget: ', self.link)
iterations += 1
# print("leaving send_transaction()")
return tx_inv.hash
def test_getdata_message_cblock_not_available(self):
cblock = CBlock()
hash_ = cblock.GetHash()
block = Block(cblock, BlockOrigin.private)
message = messages.msg_getdata()
cInv = CInv()
cInv.type = networking.inv_typemap['Block']
cInv.hash = hash_
message.inv = [cInv]
self.chain.blocks = {hash_: block}
self.networking.deferred_block_requests = {}
self.networking.getdata_message(self.public_connection1, message)
self.assertFalse(self.public_connection1.called)
self.assertIn(hash_, self.networking.deferred_block_requests)
self.assertIn(self.public_connection1.host[0],
self.networking.deferred_block_requests[hash_])
def test_getdata_message_with_block(self):
cblock = CBlock()
block = Block(cblock, BlockOrigin.private)
block.cblock = cblock
message = messages.msg_getdata()
cInv = CInv()
cInv.type = networking.inv_typemap['Block']
cInv.hash = cblock.GetHash()
message.inv = [cInv]
self.chain.blocks = {cblock.GetHash(): block}
self.networking.getdata_message(self.public_connection1, message)
self.assertTrue(self.public_connection1.send.called)
self.assertEqual(self.public_connection1.send.call_args[0][0], 'block')
self.assertEqual(self.public_connection1.send.call_args[0][1].block,
cblock)
def broadcast_tx(self, tx):
"""
Sends the tx to half our peers and waits for half of the remainder to
announce it via inv packets before calling back.
"""
def on_peer_anncounce(txid):
self.subscriptions[txhash]["announced"] += 1
if self.subscriptions[txhash]["announced"] >= self.subscriptions[
txhash]["ann_threshold"]:
if self.subscriptions[txid]["timeout"].active():
self.subscriptions[txid]["timeout"].cancel()
self.subscriptions[txid]["deferred"].callback(True)
d = defer.Deferred()
transaction = CTransaction.stream_deserialize(BytesIO(unhexlify(tx)))
txhash = transaction.GetHash()
self.inventory[txhash] = transaction
cinv = CInv()
cinv.type = 1
cinv.hash = txhash
inv_packet = msg_inv()
inv_packet.inv.append(cinv)
self.bloom_filter.insert(txhash)
self.subscriptions[txhash] = {
"announced": 0,
"ann_threshold": len(self.peers) / 4,
"callback": on_peer_anncounce,
"confirmations": 0,
"in_blocks": [],
"deferred": d,
"timeout": reactor.callLater(10, d.callback, False)
}
for peer in self.peers[len(self.peers) / 2:]:
peer.protocol.load_filter()
for peer in self.peers[:len(self.peers) / 2]:
peer.protocol.send_message(inv_packet)
return d
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 broadcast_tx(self, tx):
"""
Sends the tx to half our peers and waits for half of the remainder to
announce it via inv packets before calling back.
"""
def on_peer_anncounce(txid):
self.subscriptions[txhash]["announced"] += 1
if self.subscriptions[txhash]["announced"] >= self.subscriptions[txhash]["ann_threshold"]:
if self.subscriptions[txid]["timeout"].active():
self.subscriptions[txid]["timeout"].cancel()
self.subscriptions[txid]["deferred"].callback(True)
d = defer.Deferred()
transaction = CTransaction.stream_deserialize(BytesIO(unhexlify(tx)))
txhash = transaction.GetHash()
self.inventory[txhash] = transaction
cinv = CInv()
cinv.type = 1
cinv.hash = txhash
inv_packet = msg_inv()
inv_packet.inv.append(cinv)
self.bloom_filter.insert(txhash)
self.subscriptions[txhash] = {
"announced": 0,
"ann_threshold": len(self.peers)/4,
"callback": on_peer_anncounce,
"confirmations": 0,
"in_blocks": [],
"deferred": d,
"timeout": reactor.callLater(10, d.callback, False)
}
for peer in self.peers[len(self.peers)/2:]:
peer.protocol.load_filter()
for peer in self.peers[:len(self.peers)/2]:
peer.protocol.send_message(inv_packet)
return d
def send_getblocks(self, timecheck=True):
if not self.getblocks_ok:
return
now = time.time()
# if timecheck and (now - self.last_getblocks) < 1:
# return
self.last_getblocks = now
our_height = self.chaindb.getheight()
if our_height < 0:
gd = msg_getdata(self.ver_send)
inv = CInv()
inv.type = 2
inv.hash = bitcoin.params.GENESIS_BLOCK.GetHash()
gd.inv.append(inv)
self.send_message(gd)
elif our_height < self.remote_height:
gb = msg_getblocks(self.ver_send)
if our_height >= 0:
gb.locator.vHave = self.chaindb.getlocator()
self.send_message(gb)
def send_getdata(self):
start_block_hash = self.parameters_store.get_last_block_analized()
block_hashes = self.block_chain.get_next_n_blocks_hashes(
start_block_hash, 5000)
if len(block_hashes) == 0:
self.stop_client = True
print("Analysis ended!")
self.data_request = len(block_hashes)
invs = []
for block_hash in block_hashes:
inv = CInv()
'''
MSG_FILTERED_BLOCK
Indicates the reply should be a merkleblock message rather than a block message;
this only works if a bloom filter has been set.
'''
inv.type = 3
inv.hash = lx(block_hash)
invs.append(inv)
msg = msg_getdata()
msg.inv = invs
self.send_message(msg)
def test_serialization(self):
inv = CInv()
inv.type = 123
inv.hash = b"0" * 32
stream = _BytesIO()
inv.stream_serialize(stream)
serialized = _BytesIO(stream.getvalue())
deserialized = CInv.stream_deserialize(serialized)
self.assertEqual(deserialized, inv)
def send_inventory(self, serialized_transaction) -> Optional[msg_getdata]:
'''
Sends inventory message with given serialized transaction to connected node.
Returns:
msg_getdata, None: get data request or None if something went wrong
Note:
This method is used by `broadcast_transaction` to inform connected node about existence
of the new transaction.
'''
message = msg_inv()
inventory = CInv()
inventory.type = MSG_TX
hash_transaction = Hash(serialized_transaction)
inventory.hash = hash_transaction
message.inv.append(inventory)
timeout = time() + NODE_COMMUNICATION_TIMEOUT
while time() < timeout:
node = self.connect()
if node is None:
self.reset_connection()
continue
if not self.send_message(message):
self.terminate(node)
continue
messages = self.capture_messages([
msg_getdata,
])
if not messages:
self.terminate(node)
continue
logger.info('[%s] Node responded correctly.', node)
return messages[0]
def test_getdata_message_with_unknown_hashes(self):
message = messages.msg_getdata()
cInv1 = CInv()
cInv1.type = networking.inv_typemap['Block']
cInv1.hash = 'hash1'
cInv2 = CInv()
cInv2.type = networking.inv_typemap['Block']
cInv2.hash = 'hash2'
message.inv = [cInv1, cInv2]
self.chain.blocks = {}
self.networking.getdata_message(self.public_connection1, message)
self.assertFalse(self.public_connection1.send.called)
def send_getblocks(self, timecheck=True):
if not self.getblocks_ok:
return
now = time.time()
# if timecheck and (now - self.last_getblocks) < 1:
# return
self.last_getblocks = now
our_height = self.chaindb.getheight()
if our_height < 0:
gd = msg_getdata(self.ver_send)
inv = CInv()
inv.type = 2
inv.hash = lx(
'cf7938a048f1442dd34f87ce56d3e25455b22a44f676325f1ae8c7a33d0731c7'
)
gd.inv.append(inv)
self.send_message(gd)
elif our_height < self.remote_height:
gb = msg_getblocks(self.ver_send)
if our_height >= 0:
gb.locator.vHave = self.chaindb.getlocator()
self.send_message(gb)
def dataReceived(self, data):
self.buffer += data
header = MsgHeader.from_bytes(self.buffer)
if len(self.buffer) < header.msglen + 24:
return
try:
stream = BytesIO(self.buffer)
m = MsgSerializable.stream_deserialize(stream)
self.buffer = stream.read()
if m.command == "verack":
self.timeouts["verack"].cancel()
del self.timeouts["verack"]
if "version" not in self.timeouts:
self.on_handshake_complete()
elif m.command == "version":
self.version = m
if m.nVersion < 70001 or m.nServices != 1:
self.transport.loseConnection()
self.timeouts["version"].cancel()
del self.timeouts["version"]
msg_verack().stream_serialize(self.transport)
if self.blockchain is not None:
self.to_download = self.version.nStartingHeight - self.blockchain.get_height()
if "verack" not in self.timeouts:
self.on_handshake_complete()
elif m.command == "getdata":
for item in m.inv:
if item.hash in self.inventory and item.type == 1:
transaction = msg_tx()
transaction.tx = self.inventory[item.hash]
transaction.stream_serialize(self.transport)
elif m.command == "inv":
for item in m.inv:
# This is either an announcement of tx we broadcast ourselves or a tx we have already downloaded.
# In either case we only need to callback here.
if item.type == 1 and item.hash in self.subscriptions:
self.subscriptions[item.hash]["callback"](item.hash)
# This is the first time we are seeing this txid. Let's download it and check to see if it sends
# coins to any addresses in our subscriptions.
elif item.type == 1 and item.hash not in self.inventory:
self.timeouts[item.hash] = reactor.callLater(5, self.response_timeout, item.hash)
cinv = CInv()
cinv.type = 1
cinv.hash = item.hash
getdata_packet = msg_getdata()
getdata_packet.inv.append(cinv)
getdata_packet.stream_serialize(self.transport)
# The peer announced a new block. Unlike txs, we should download it, even if we've previously
# downloaded it from another peer, to make sure it doesn't contain any txs we didn't know about.
elif item.type == 2 or item.type == 3:
if self.state == State.DOWNLOADING:
self.download_tracker[0] += 1
cinv = CInv()
cinv.type = 3
cinv.hash = item.hash
getdata_packet = msg_getdata()
getdata_packet.inv.append(cinv)
getdata_packet.stream_serialize(self.transport)
if self.state != State.DOWNLOADING:
self.log.debug("Peer %s:%s announced new %s %s" % (self.transport.getPeer().host, self.transport.getPeer().port, CInv.typemap[item.type], b2lx(item.hash)))
elif m.command == "tx":
if m.tx.GetHash() in self.timeouts:
self.timeouts[m.tx.GetHash()].cancel()
for out in m.tx.vout:
try:
addr = str(CBitcoinAddress.from_scriptPubKey(out.scriptPubKey))
except Exception:
addr = None
if addr in self.subscriptions:
if m.tx.GetHash() not in self.subscriptions:
# It's possible the first time we are hearing about this tx is following block
# inclusion. If this is the case, let's make sure we include the correct number
# of confirmations.
in_blocks = self.inventory[m.tx.GetHash()] if m.tx.GetHash() in self.inventory else []
confirms = []
if len(in_blocks) > 0:
for block in in_blocks:
confirms.append(self.blockchain.get_confirmations(block))
self.subscriptions[m.tx.GetHash()] = {
"announced": 0,
"ann_threshold": self.subscriptions[addr][0],
"confirmations": max(confirms) if len(confirms) > 0 else 0,
"last_confirmation": 0,
"callback": self.subscriptions[addr][1],
"in_blocks": in_blocks,
"tx": m.tx
}
self.subscriptions[addr][1](m.tx.GetHash())
if m.tx.GetHash() in self.inventory:
del self.inventory[m.tx.GetHash()]
elif m.command == "merkleblock":
if self.blockchain is not None:
self.blockchain.process_block(m.block)
if self.state != State.DOWNLOADING:
self.blockchain.save()
# check for block inclusion of subscribed txs
for match in m.block.get_matched_txs():
if match in self.subscriptions:
self.subscriptions[match]["in_blocks"].append(m.block.GetHash())
else:
# stick the hash here in case this is the first we are hearing about this tx.
# when the tx comes over the wire after this block, we will append this hash.
self.inventory[match] = [m.block.GetHash()]
# run through subscriptions and callback with updated confirmations
for txid in self.subscriptions:
try:
confirms = []
for block in self.subscriptions[txid]["in_blocks"]:
confirms.append(self.blockchain.get_confirmations(block))
self.subscriptions[txid]["confirmations"] = max(confirms)
self.subscriptions[txid]["callback"](txid)
except Exception:
pass
# If we are in the middle of an initial chain download, let's check to see if we have
# either reached the end of the download or if we need to loop back around and make
# another get_blocks call.
if self.state == State.DOWNLOADING:
self.download_count += 1
percent = int((self.download_count / float(self.to_download))*100)
if self.download_listener is not None:
self.download_listener.progress(percent, self.download_count)
self.download_listener.on_block_downloaded((self.transport.getPeer().host, self.transport.getPeer().port), header, self.to_download - self.download_count + 1)
if percent == 100:
if self.download_listener is not None:
self.download_listener.download_complete()
self.log.info("Chain download 100% complete")
self.download_tracker[1] += 1
# We've downloaded every block in the inv packet and still have more to go.
if (self.download_tracker[0] == self.download_tracker[1] and
self.blockchain.get_height() < self.version.nStartingHeight):
if self.timeouts["download"].active():
self.timeouts["download"].cancel()
self.download_blocks(self.callbacks["download"])
# We've downloaded everything so let's callback to the client.
elif self.blockchain.get_height() >= self.version.nStartingHeight:
self.blockchain.save()
self.state = State.CONNECTED
self.callbacks["download"]()
if self.timeouts["download"].active():
self.timeouts["download"].cancel()
elif m.command == "headers":
if self.timeouts["download"].active():
self.timeouts["download"].cancel()
for header in m.headers:
# If this node sent a block with no parent then disconnect from it and callback
# on client.check_for_more_blocks.
if self.blockchain.process_block(header) is None:
self.blockchain.save()
self.callbacks["download"]()
self.transport.loseConnection()
return
self.download_count += 1
percent = int((self.download_count / float(self.to_download))*100)
if self.download_listener is not None:
self.download_listener.progress(percent, self.download_count)
self.download_listener.on_block_downloaded((self.transport.getPeer().host, self.transport.getPeer().port), header, self.to_download - self.download_count + 1)
if percent == 100:
if self.download_listener is not None:
self.download_listener.download_complete()
self.log.info("Chain download 100% complete")
# The headers message only comes in batches of 500 blocks. If we still have more blocks to download
# loop back around and call get_headers again.
if self.blockchain.get_height() < self.version.nStartingHeight:
self.download_blocks(self.callbacks["download"])
else:
self.blockchain.save()
self.callbacks["download"]()
self.state = State.CONNECTED
elif m.command == "ping":
msg_pong(nonce=m.nonce).stream_serialize(self.transport)
else:
self.log.debug("Received message %s from %s:%s" % (m.command, self.transport.getPeer().host, self.transport.getPeer().port))
if len(self.buffer) >= 24: self.dataReceived("")
except Exception:
traceback.print_exc()
def dataReceived(self, data):
self.buffer += data
# if self.buffer.length >= sizeof(message header)
# messageHeader := MessageHeader.deserialize(self.buffer)
# if messageHeader.payloadLength > someBigNumber
# throw DropConnection
# if self.buffer.length < messageHeader.payloadLength
# return
try:
m = MsgSerializable.from_bytes(self.buffer)
self.buffer = ""
if m.command == "verack":
self.timeouts["verack"].cancel()
del self.timeouts["verack"]
if "version" not in self.timeouts:
self.on_handshake_complete()
elif m.command == "version":
self.version = m
if m.nVersion < 70001:
self.transport.loseConnection()
self.timeouts["version"].cancel()
del self.timeouts["version"]
msg_verack().stream_serialize(self.transport)
if "verack" not in self.timeouts:
self.on_handshake_complete()
elif m.command == "getdata":
for item in m.inv:
if item.hash in self.inventory and item.type == 1:
transaction = msg_tx()
transaction.tx = self.inventory[item.hash]
transaction.stream_serialize(self.transport)
elif m.command == "inv":
for item in m.inv:
# callback tx
if item.type == 1 and item.hash in self.subscriptions:
self.subscriptions[item.hash]["callback"](item.hash)
# download tx and check subscription
elif item.type == 1 and item.hash not in self.inventory:
self.timeouts[item.hash] = reactor.callLater(5, self.response_timeout, item.hash)
cinv = CInv()
cinv.type = 1
cinv.hash = item.hash
getdata_packet = msg_getdata()
getdata_packet.inv.append(cinv)
getdata_packet.stream_serialize(self.transport)
# download block
elif item.type == 2 or item.type == 3:
cinv = CInv()
cinv.type = 3
cinv.hash = item.hash
getdata_packet = msg_getdata()
getdata_packet.inv.append(cinv)
getdata_packet.stream_serialize(self.transport)
print "Peer %s:%s announced new %s %s" % (self.transport.getPeer().host, self.transport.getPeer().port, CInv.typemap[item.type], b2lx(item.hash))
elif m.command == "tx":
if m.tx.GetHash() in self.timeouts:
self.timeouts[m.tx.GetHash()].cancel()
for out in m.tx.vout:
addr = str(CBitcoinAddress.from_scriptPubKey(out.scriptPubKey))
if addr in self.subscriptions:
if m.tx.GetHash() not in self.subscriptions:
self.subscriptions[m.tx.GetHash()] = {
"announced": 0,
"ann_threshold": self.subscriptions[addr][0],
"confirmations": 0,
"callback": self.subscriptions[addr][1],
"in_blocks": self.inventory[m.tx.GetHash()] if m.tx.GetHash() in self.inventory else [],
"tx": m.tx
}
self.subscriptions[addr][1](m.tx.GetHash())
if m.tx.GetHash() in self.inventory:
del self.inventory[m.tx.GetHash()]
elif m.command == "merkleblock":
self.blockchain.process_block(m.block)
if self.blockchain is not None:
# check for block inclusion of subscribed txs
for match in m.block.get_matched_txs():
if match in self.subscriptions:
self.subscriptions[match]["in_blocks"].append(m.block.GetHash())
else:
# stick the hash here in case this is a tx we missed on broadcast.
# when the tx comes over the wire after this block, we will append this hash.
self.inventory[match] = [m.block.GetHash()]
# run through subscriptions and callback with updated confirmations
for txid in self.subscriptions:
if len(txid) == 32:
confirms = []
for block in self.subscriptions[txid]["in_blocks"]:
confirms.append(self.blockchain.get_confirmations(block))
self.subscriptions[txid]["confirmations"] = max(confirms)
self.subscriptions[txid]["callback"](txid)
elif m.command == "headers":
self.timeouts["download"].cancel()
to_download = self.version.nStartingHeight - self.blockchain.get_height()
i = 1
for header in m.headers:
self.blockchain.process_block(header)
if i % 50 == 0 or int((i / float(to_download))*100) == 100:
print "Chain download %s%% complete" % int((i / float(to_download))*100)
i += 1
if self.blockchain.get_height() < self.version.nStartingHeight:
self.download_blocks(self.callbacks["download"])
elif self.callbacks["download"]:
self.callbacks["download"]()
else:
print "Received message %s from %s:%s" % (m.command, self.transport.getPeer().host, self.transport.getPeer().port)
except Exception:
pass
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))