def HundredTest(rpc: RPC) -> None:
#Blocks.
file: IO[Any] = open("PythonTests/Vectors/Merit/BlankBlocks.json", "r")
blocks: List[Dict[str, Any]] = json.loads(file.read())
file.close()
#Grab only the first block.
blocks = [blocks[0]]
#Merit.
merit: Merit = Merit.fromJSON(blocks)
#The normal flow would be:
#Handshake
#BlockHeaderRequest
#We need to delay the BlockHeader. Then, Meros should send:
#Handshake
#BlockHeaderRequest
#Handshake
#EXCEPT Meros can't handle sending Handshakes after Requests like that (see issue #100).
#Therefore, Meros won't send a Handshake if it has a pending request (totally valid and acceptable behavior).
#This test verifies we get disconnected without a Handshake attempt.
#Handshake with the node.
rpc.meros.connect(254, 254, merit.blockchain.blocks[1].header.hash)
#Handle sync requests.
reqHash: bytes = bytes()
while True:
msg: bytes = rpc.meros.recv()
if MessageType(msg[0]) == MessageType.Syncing:
rpc.meros.syncingAcknowledged()
elif MessageType(msg[0]) == MessageType.BlockHeaderRequest:
reqHash = msg[1:33]
if reqHash != merit.blockchain.blocks[-1].header.hash:
raise TestError(
"Meros asked for a BlockHeader other than the one in the Block from the Handshake."
)
#Wait until Meros disconnects us.
try:
rpc.meros.recv()
except TestError:
raise SuccessError(
"Meros didn't attempt to handshake with us while it had a pending sync request."
)
raise TestError(
"Meros tried to handshake with us while it had a pending sync request."
)
def __init__(self,
rpc: RPC,
blockchain: List[Dict[str, Any]],
transactions: Optional[Transactions] = None,
callbacks: Dict[int, Callable[[], None]] = {},
everyBlock: Optional[Callable[[int], None]] = None) -> None:
#RPC.
self.rpc: RPC = rpc
#Arguments.
self.merit: Merit = Merit.fromJSON(blockchain)
self.transactions: Optional[Transactions] = transactions
self.callbacks: Dict[int, Callable[[], None]] = dict(callbacks)
self.everyBlock: Optional[Callable[[int], None]] = everyBlock
def HundredFortySevenTest(
rpc: RPC
) -> None:
file: IO[Any] = open("PythonTests/Vectors/Transactions/ClaimedMint.json", "r")
vectors: Dict[str, Any] = json.loads(file.read())
file.close()
#Merit.
merit: Merit = Merit.fromJSON(vectors["blockchain"])
#Transactions.
transactions: Transactions = Transactions.fromJSON(vectors["transactions"])
#Ed25519 keys.
privKey: ed25519.SigningKey = ed25519.SigningKey(b'\0' * 32)
pubKey: ed25519.VerifyingKey = privKey.get_verifying_key()
#Grab the Claim hash,
claim: bytes = merit.blockchain.blocks[-1].body.packets[0].hash
#Create a Send which underflows.
send: Send = Send(
[(claim, 0)],
[
(pubKey.to_bytes(), 18446744073709551231),
(pubKey.to_bytes(), 385 + Claim.fromTransaction(transactions.txs[claim]).amount)
]
)
send.sign(privKey)
send.beat(SpamFilter(3))
#Custom function to send the last Block and verify it errors at the right place.
def checkFail() -> None:
#Send the Send.
rpc.meros.liveTransaction(send)
#Handle sync requests.
while True:
#Try receiving from the Live socket, where Meros sends keep-alives.
try:
if len(rpc.meros.live.recv()) != 0:
raise Exception()
except TestError:
raise SuccessError("Node disconnected us after we sent an invalid Transaction.")
except Exception:
raise TestError("Meros sent a keep-alive.")
#Create and execute a Liver.
Liver(rpc, vectors["blockchain"], transactions, callbacks={12: checkFail}).live()
def __init__(self,
rpc: RPC,
blockchain: List[Dict[str, Any]],
transactions: Union[Transactions, None] = None,
settings: Dict[str, Any] = {}) -> None:
#RPC.
self.rpc: RPC = rpc
#DBs/Settings.
self.merit: Merit = Merit.fromJSON(blockchain)
self.transactions: Union[Transactions, None] = transactions
self.settings: Dict[str, Any] = dict(settings)
#Provide default settings.
if "height" not in self.settings:
self.settings["height"] = len(self.merit.blockchain.blocks) - 1
if "playback" not in self.settings:
self.settings["playback"] = True
#List of Block hashes in this Blockchain.
self.blockHashes: Set[bytes] = set()
for b in range(1, self.settings["height"] + 1):
self.blockHashes.add(self.merit.blockchain.blocks[b].header.hash)
#List of mentioned Blocks.
self.blocks: List[Block] = [
self.merit.blockchain.blocks[self.settings["height"]]
]
#Dict of mentioned packets.
self.packets: Dict[int, VerificationPacket] = {}
#Set of mentioned Transactions.
self.txs: Set[bytes] = set()
#Dict of synced Transactions.
self.synced: Set[bytes] = set()
def VUnknownTest(rpc: RPC) -> None:
file: IO[Any] = open(
"PythonTests/Vectors/Consensus/Verification/Parsable.json", "r")
vectors: Dict[str, Any] = json.loads(file.read())
file.close()
#Merit.
merit: Merit = Merit.fromJSON(vectors["blockchain"])
#Custom function to send the last Block and verify it errors at the right place.
def checkFail() -> None:
#This Block should cause the node to disconnect us AFTER it attempts to sync our Transaction.
syncedTX: bool = False
#Grab the Block.
block: Block = merit.blockchain.blocks[2]
#Send the Block.
rpc.meros.liveBlockHeader(block.header)
#Handle sync requests.
reqHash: bytes = bytes()
while True:
if syncedTX:
#Try receiving from the Live socket, where Meros sends keep-alives.
try:
if len(rpc.meros.live.recv()) != 0:
raise Exception()
except TestError:
raise SuccessError(
"Node disconnected us after we sent a parsable, yet invalid, Verification."
)
except Exception:
raise TestError("Meros sent a keep-alive.")
msg: bytes = rpc.meros.sync.recv()
if MessageType(msg[0]) == MessageType.BlockBodyRequest:
reqHash = msg[1:33]
if reqHash != block.header.hash:
raise TestError(
"Meros asked for a Block Body that didn't belong to the Block we just sent it."
)
#Send the BlockBody.
rpc.meros.blockBody(block)
elif MessageType(msg[0]) == MessageType.SketchHashesRequest:
if not block.body.packets:
raise TestError(
"Meros asked for Sketch Hashes from a Block without any."
)
reqHash = msg[1:33]
if reqHash != block.header.hash:
raise TestError(
"Meros asked for Sketch Hashes that didn't belong to the Block we just sent it."
)
#Create the haashes.
hashes: List[int] = []
for packet in block.body.packets:
hashes.append(Sketch.hash(block.header.sketchSalt, packet))
#Send the Sketch Hashes.
rpc.meros.sketchHashes(hashes)
elif MessageType(msg[0]) == MessageType.SketchHashRequests:
if not block.body.packets:
raise TestError(
"Meros asked for Verification Packets from a Block without any."
)
reqHash = msg[1:33]
if reqHash != block.header.hash:
raise TestError(
"Meros asked for Verification Packets that didn't belong to the Block we just sent it."
)
#Create a lookup of hash to packets.
packets: Dict[int, VerificationPacket] = {}
for packet in block.body.packets:
packets[Sketch.hash(block.header.sketchSalt,
packet)] = packet
#Look up each requested packet and respond accordingly.
for h in range(int.from_bytes(msg[33:37], byteorder="big")):
sketchHash: int = int.from_bytes(msg[37 + (h * 8):45 +
(h * 8)],
byteorder="big")
if sketchHash not in packets:
raise TestError(
"Meros asked for a non-existent Sketch Hash.")
rpc.meros.packet(packets[sketchHash])
elif MessageType(msg[0]) == MessageType.TransactionRequest:
rpc.meros.dataMissing()
syncedTX = True
else:
raise TestError("Unexpected message sent: " +
msg.hex().upper())
#Create and execute a Liver.
Liver(rpc, vectors["blockchain"], callbacks={1: checkFail}).live()
def CompetingFinalizedTest(
rpc: RPC
) -> None:
file: IO[Any] = open("PythonTests/Vectors/Transactions/CompetingFinalized.json", "r")
vectors: Dict[str, Any] = json.loads(file.read())
file.close()
#Merit.
merit: Merit = Merit.fromJSON(vectors["blockchain"])
#Transactions.
transactions: Transactions = Transactions.fromJSON(vectors["transactions"])
#Custom function to send the last Block and verify it errors at the right place.
def checkFail() -> None:
#This Block should cause the node to disconnect us AFTER it syncs our Transaction.
syncedTX: bool = False
#Grab the Block.
block: Block = merit.blockchain.blocks[-1]
#Send the Block.
rpc.meros.blockHeader(block.header)
#Handle sync requests.
reqHash: bytes = bytes()
while True:
try:
msg: bytes = rpc.meros.recv()
except TestError:
if syncedTX:
raise SuccessError("Node disconnected us after we sent an invalid Transaction.")
raise TestError("Node errored before syncing our Transaction.")
if MessageType(msg[0]) == MessageType.Syncing:
rpc.meros.syncingAcknowledged()
elif MessageType(msg[0]) == MessageType.BlockBodyRequest:
reqHash = msg[1 : 33]
if reqHash != block.header.hash:
raise TestError("Meros asked for a Block Body that didn't belong to the Block we just sent it.")
#Send the BlockBody.
rpc.meros.blockBody(merit.state.nicks, block)
elif MessageType(msg[0]) == MessageType.SketchHashesRequest:
if not block.body.packets:
raise TestError("Meros asked for Sketch Hashes from a Block without any.")
reqHash = msg[1 : 33]
if reqHash != block.header.hash:
raise TestError("Meros asked for Sketch Hashes that didn't belong to the Block we just sent it.")
#Create the haashes.
hashes: List[int] = []
for packet in block.body.packets:
hashes.append(Sketch.hash(block.header.sketchSalt, packet))
#Send the Sketch Hashes.
rpc.meros.sketchHashes(hashes)
elif MessageType(msg[0]) == MessageType.SketchHashRequests:
if not block.body.packets:
raise TestError("Meros asked for Verification Packets from a Block without any.")
reqHash = msg[1 : 33]
if reqHash != block.header.hash:
raise TestError("Meros asked for Verification Packets that didn't belong to the Block we just sent it.")
#Create a lookup of hash to packets.
packets: Dict[int, VerificationPacket] = {}
for packet in block.body.packets:
packets[Sketch.hash(block.header.sketchSalt, packet)] = packet
#Look up each requested packet and respond accordingly.
for h in range(int.from_bytes(msg[33 : 37], byteorder="big")):
sketchHash: int = int.from_bytes(msg[37 + (h * 8) : 45 + (h * 8)], byteorder="big")
if sketchHash not in packets:
raise TestError("Meros asked for a non-existent Sketch Hash.")
rpc.meros.packet(packets[sketchHash])
elif MessageType(msg[0]) == MessageType.TransactionRequest:
reqHash = msg[1 : 33]
if reqHash not in transactions.txs:
raise TestError("Meros asked for a non-existent Transaction.")
rpc.meros.transaction(transactions.txs[reqHash])
syncedTX = True
elif MessageType(msg[0]) == MessageType.SyncingOver:
pass
elif MessageType(msg[0]) == MessageType.BlockHeader:
#Raise a TestError if the Block was added.
raise TestError("Meros synced a Transaction which competed with a finalized Transaction.")
else:
raise TestError("Unexpected message sent: " + msg.hex().upper())
#Create and execute a Liver.
Liver(rpc, vectors["blockchain"], transactions, callbacks={7: checkFail}).live()
