def serialize(self, version_msg=False):
msg = b""
# FIXME: What's the right condition here
if self.time:
msg += int_to_little_endian(self.time, 4)
msg += int_to_little_endian(self.services, 8)
msg += int_to_little_endian(self.ip, 16)
msg += int_to_little_endian(self.port, 2)
return msg
def serialize(self):
# version - 4 bytes, little endian
result = int_to_little_endian(self.version, 4)
# prev_block - 32 bytes, little endian
result += int_to_little_endian(self.prev_block, 32)
# merkle_root - 32 bytes, little endian
result += int_to_little_endian(self.merkle_root, 32)
# timestamp - 4 bytes, little endian
result += int_to_little_endian(self.timestamp, 4)
# bits - 4 bytes
result += self.bits
# nonce - 4 bytes
result += self.nonce
return result
def serialize(self):
result = NETWORK_MAGIC
result += encode_command(self.command)
result += int_to_little_endian(len(self.payload), 4)
result += double_sha256(self.payload)[:4]
result += self.payload
return result
def serialize(self):
msg = b""
msg += int_to_little_endian(self.version, 4)
msg += int_to_little_endian(self.services, 8)
msg += int_to_little_endian(self.timestamp, 8)
msg += self.addr_recv.serialize()
msg += self.addr_from.serialize()
msg += int_to_little_endian(self.nonce, 8)
msg += encode_varstr(self.user_agent)
msg += int_to_little_endian(self.start_height, 4)
msg += int_to_little_endian(self.relay, 1)
return msg
def handle_headers(payload, sock):
block_headers = Headers.parse(payload)
print(f'{len(block_headers.headers)} new headers')
update_blocks(block_headers)
# after 500 headers, get the blocks
if len(blocks) < 500:
send_getheaders(sock)
else:
items = [
InventoryItem(2, int_to_little_endian(hash_, 32))
for hash_ in blocks[:10]
]
getdata = GetData(items=items)
msg = Message(getdata.command, getdata.serialize())
sock.send(msg.serialize())
print(f'We now have {len(blocks)} headers')
def serialize(self):
msg = int_to_little_endian(self.version, 4)
msg += encode_varint(len(self.items))
for hash_ in self.items:
msg += int_to_little_endian(hash_, 32)
return msg
def serialize(self):
msg = self.locator.serialize()
msg += int_to_little_endian(self.hashstop, 32)
return msg
def serialize(self):
msg = b""
msg += int_to_little_endian(self.type, 4)
msg += self.hash
return msg