def broadcast_transaction(self, raw_transaction: str) -> Optional[str]:
'''
Sends given transaction to connected node.
Args:
raw_transaction (str): hex string containing signed transaction
Returns:
str, None: transaction address if transaction was sent, None otherwise.
'''
deserialized_transaction = self.deserialize_raw_transaction(
raw_transaction)
serialized_transaction = deserialized_transaction.serialize()
get_data = self.send_inventory(serialized_transaction)
if not get_data:
logger.debug(
ConnectionProblem(
'Clove could not get connected with any of the nodes for too long.'
))
self.reset_connection()
return
node = self.get_current_node()
if all(el.hash != Hash(serialized_transaction) for el in get_data.inv):
logger.debug(
UnexpectedResponseFromNode(
'Node did not ask for our transaction', node))
self.reset_connection()
return
message = msg_tx()
message.tx = deserialized_transaction
if not self.send_message(message, 20):
return
logger.info('[%s] Looking for reject message.', node)
messages = self.capture_messages([
msg_reject,
],
timeout=REJECT_TIMEOUT,
buf_size=8192,
ignore_empty=True)
if messages:
logger.debug(TransactionRejected(messages[0], node))
self.reset_connection()
return
logger.info('[%s] Reject message not found.', node)
transaction_address = b2lx(deserialized_transaction.GetHash())
logger.info('[%s] Transaction %s has just been sent.', node,
transaction_address)
return transaction_address
def getdata_tx(self, txhash):
if txhash in self.mempool.pool:
tx = self.mempool.pool[txhash]
else:
tx = self.chaindb.gettx(txhash)
if tx is None:
return
msg = messages.msg_tx()
msg.tx = tx
self.send_message(msg)
def getdata_tx(self, txhash):
if txhash in self.mempool.pool:
tx = self.mempool.pool[txhash]
else:
tx = self.chaindb.gettx(txhash)
if tx is None:
return
msg = messages.msg_tx()
msg.tx = tx
self.send_message(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 broadcast_listen(self):
pubsub = redis.pubsub()
pubsub.subscribe('broadcast')
for msg in pubsub.listen():
tx = msg['data']
try:
tx = tx.decode()
btx = bytes.fromhex(tx)
tx = CTransaction.deserialize(btx)
# CheckTransaction(tx) # TODO: Fix money supply?
msg = msg_tx()
msg.tx = tx
self.send_message(msg)
print('Sent tx %s' % b2lx(msg.tx.GetTxid()))
if self.chaindb.tx_is_orphan(msg.tx):
self.log.info("MemPool: Ignoring orphan TX %s" %
(b2lx(msg.tx.GetHash()), ))
else:
self.chaindb.mempool_add(msg.tx)
except Exception as e:
print(e)
traceback.print_exc()
