class TxSerializer(Serializer):
"""The transaction serializer."""
model_class = Tx
version = fields.UInt32LEField()
tx_in = fields.ListField(TxInSerializer)
tx_out = fields.ListField(TxOutSerializer)
lock_time = fields.UInt32LEField()
class BlockSerializer(Serializer):
"""The deserializer for the blocks."""
model_class = Block
version = fields.UInt32LEField()
prev_block = fields.Hash()
merkle_root = fields.Hash()
timestamp = fields.UInt32LEField()
bits = fields.UInt32LEField()
nonce = fields.UInt32LEField()
txns = fields.ListField(TxSerializer)
class BlockHeaderSerializer(Serializer):
"""The serializer for the block header."""
model_class = BlockHeader
version = fields.UInt32LEField()
prev_block = fields.Hash()
merkle_root = fields.Hash()
timestamp = fields.UInt32LEField()
bits = fields.UInt32LEField()
nonce = fields.UInt32LEField()
txns_count = fields.VariableIntegerField()
class IPv4AddressTimestampSerializer(Serializer):
"""Serializer for the IPv4AddressTimestamp."""
model_class = IPv4AddressTimestamp
timestamp = fields.UInt32LEField()
services = fields.UInt64LEField()
ip_address = fields.IPv4AddressField()
port = fields.UInt16BEField()
class MessageHeaderSerializer(Serializer):
"""Serializer for the MessageHeader."""
model_class = MessageHeader
magic = fields.UInt32LEField()
command = fields.FixedStringField(12)
length = fields.UInt32LEField()
checksum = fields.UInt32LEField()
@staticmethod
def calcsize():
return struct.calcsize("i12sii")
@staticmethod
def calc_checksum(payload):
"""Calculate the checksum of the specified payload.
:param payload: The binary data payload.
"""
sha256hash = hashlib.sha256(payload)
sha256hash = hashlib.sha256(sha256hash.digest())
checksum = sha256hash.digest()[:4]
return struct.unpack("<I", checksum)[0]
class GetBlocksSerializer(Serializer):
model_class = GetBlocks
version = fields.UInt32LEField()
hash_count = fields.VariableIntegerField()
block_hashes = fields.BlockLocator()
hash_stop = fields.Hash()
class TxInSerializer(Serializer):
"""The transaction input serializer."""
model_class = TxIn
previous_output = fields.NestedField(OutPointSerializer)
signature_script = fields.VariableStringField()
sequence = fields.UInt32LEField()
class OutPointSerializer(Serializer):
"""The OutPoint representation serializer."""
model_class = OutPoint
out_hash = fields.Hash()
index = fields.UInt32LEField()
class InventorySerializer(Serializer):
"""The serializer for the Inventory."""
model_class = Inventory
inv_type = fields.UInt32LEField()
inv_hash = fields.Hash()
