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Wallet.py
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Wallet.py
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#Wallet
import SocketUtils
import Transactions
import TxBlock
import pickle
import Signatures
head_blocks = [None]
wallets = [('localhost',5006)]
miners = [('localhost',5005)]
break_now = False
verbose = True
my_public,my_private = Signatures.generate_keys()
def StopAll():
global break_now
break_now = True
def walletServer(my_addr):
global head_blocks
try:
head_blocks = TxBlock.loadBlocks("WalletBlocks.dat")
except:
print("WS:No previous blocks found. Starting fresh.")
head_blocks = TxBlock.loadBlocks("Genesis.dat")
server = SocketUtils.newServerConnection('localhost',5006)
while not break_now:
newBlock = SocketUtils.recvObj(server)
if isinstance(newBlock,TxBlock.TxBlock):
if verbose: print("Rec'd block")
found = False
for b in head_blocks:
if b == None:
if newBlock.previousHash == None:
found = True
newBlock.previousBlock = b
if not newBlock.is_valid():
print("Error! newBlock is not valid")
else:
head_blocks.remove(b)
head_blocks.append(newBlock)
if verbose: print("Added to head_blocks")
elif newBlock.previousHash == b.computeHash():
found = True
newBlock.previousBlock = b
if not newBlock.is_valid():
print("Error! newBlock is not valid")
else:
head_blocks.remove(b)
head_blocks.append(newBlock)
if verbose: print("Added to head_blocks")
else:
this_block = b
while this_block != None:
if newBlock.previousHash == this_block.previousHash:
found = True
newBlock.previousBlock = this_block.previousBlock
if not newBlock in head_blocks:
head_blocks.append(newBlock)
if verbose: print("Added new sister block")
this_block = this_block.previousBlock
if not found:
print ("Error! Couldn't find a parent for newBlock")
#TODO handle orphaned blocks
TxBlock.saveBlocks(head_blocks,"WalletBlocks.dat")
server.close()
return True
def getBalance(pu_key):
long_chain = TxBlock.findLongestBlockchain(head_blocks)
return TxBlock.getBalance(pu_key,long_chain)
def sendCoins(pu_send, amt_send, pr_send, pu_recv, amt_recv, miner_list):
newTx = Transactions.Tx()
newTx.add_input(pu_send, amt_send)
newTx.add_output(pu_recv, amt_recv)
newTx.sign(pr_send)
for ip,port in miner_list:
SocketUtils.sendObj(ip,newTx,port)
return True
def loadKeys(pr_file, pu_file):
return Signatures.loadPrivate(pr_file), Signatures.loadPublic(pu_file)
if __name__ == "__main__":
import time
import Miner
import threading
import Signatures
miner_pr, miner_pu = Signatures.generate_keys()
t1 = threading.Thread(target=Miner.minerServer, args=(('localhost',5005),))
t2 = threading.Thread(target=Miner.nonceFinder, args=(wallets, miner_pu))
t3 = threading.Thread(target=walletServer, args=(('localhost',5006),))
t1.start()
t2.start()
t3.start()
pr1,pu1 = loadKeys("private.key","public.key")
pr2,pu2 = Signatures.generate_keys()
pr3,pu3 = Signatures.generate_keys()
#Query balances
bal1 = getBalance(pu1)
print(bal1)
bal2 = getBalance(pu2)
bal3 = getBalance(pu3)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu2, 0.1, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
sendCoins(pu1, 0.1, pr1, pu3, 0.03, miners)
time.sleep(60)
#Save/Load all blocks
TxBlock.saveBlocks(head_blocks, "AllBlocks.dat")
head_blocks = TxBlock.loadBlocks("AllBlocks.dat")
#Query balances
new1 = getBalance(pu1)
print(new1)
new2 = getBalance(pu2)
new3 = getBalance(pu3)
#Verify balances
if abs(new1-bal1+2.0) > 0.00000001:
print("Error! Wrong balance for pu1")
else:
print("Success. Good balance for pu1")
if abs(new2-bal2-1.0) > 0.00000001:
print("Error! Wrong balance for pu2")
else:
print("Success. Good balance for pu2")
if abs(new3-bal3-0.3) > 0.00000001:
print("Error! Wrong balance for pu3")
else:
print("Success. Good balance for pu3")
Miner.StopAll()
num_heads = len(head_blocks)
sister = TxBlock.TxBlock(head_blocks[0].previousBlock.previousBlock)
sister.previousBlock = None
SocketUtils.sendObj('localhost',sister,5006)
time.sleep(10)
if (len(head_blocks) == num_heads + 1):
print ("Success! New head_block created")
else:
print("Error! Failed to add sister block")
StopAll()
t1.join()
t2.join()
t3.join()
print ("Exit successful.")