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()