def nonceFinder(wallet_list, miner_public):
global break_now
# add Txs to new block
while not break_now:
newBlock = TxBlock.TxBlock(TxBlock.findLongestBlockchain(head_blocks))
for tx in tx_list:
newBlock.addTx(tx)
# Compute and add mining reward
total_in, total_out = newBlock.count_totals()
mine_reward = Transactions.Tx()
mine_reward.add_output(miner_public, 25.0 + total_in - total_out)
newBlock.addTx(mine_reward)
# Find nonce
if verbose: print("Finding Nonce...")
newBlock.find_nonce(10000)
if newBlock.good_nonce():
if verbose: print("Good nonce found")
head_blocks.remove(newBlock.previousBlock)
head_blocks.append(newBlock)
# Send new block
savePrev = newBlock.previousBlock
newBlock.previousBlock = None
for ip_addr, port in wallet_list:
if verbose: print("Sending to " + ip_addr + ":" + str(port))
SocketUtils.sendObj(ip_addr, newBlock, 5006)
newBlock.previousBlock = savePrev
# Remove used txs from tx_list
for tx in newBlock.data:
if tx != mine_reward:
tx_list.remove(tx)
return True
def nonceFinder(wallet_list,miner_public):
# Add txs to block
global break_now
while not break_now:
newBlock = TxBlock.TxBlock([],findLongestBlockchain())
for tx in tx_list:
newBlock.addTx(tx)
# Compute and add mining reward
total_in,total_out = newBlock.count_totals()
mine_reward = Transactions.Tx()
mine_reward.add_output(miner_public,25.0+total_in-total_out)
newBlock.addTx(mine_reward)
# Find nonce
print ("Finding Nonce...")
newBlock.find_nonce(10000)
if newBlock.good_nonce():
print ("Good nonce found")
# Send new block
for ip_addr,port in wallet_list:
print ("Sending to " + ip_addr + ":" + str(port))
Socketutil.sendObj(ip_addr,newBlock,5006)
head_blocks.remove(newBlock.previousBlock)
head_blocks.append(newBlock)
break
return True
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)
SocketUtils.sendObj('localhost', newTx)
return True
def nonceFinder(wallet_list, miner_public):
global break_now
global head_blocks
# add Txs to new block
try:
head_blocks = TxBlock.loadBlocks("AllBlocks.dat")
except:
head_blocks = TxBlock.loadBlocks("GenesisBlock.dat")
while not break_now:
newBlock = TxBlock.TxBlock(TxBlock.findLongestBlockchain(head_blocks))
tmp = Transactions.Tx()
tmp.add_output(miner_public, 25.0)
newBlock.addTx(tmp)
for tx in tx_list:
newBlock.addTx(tx)
if not newBlock.check_size():
newBlock.removeTx(tx)
break
newBlock.removeTx(tmp)
# Compute and add mining reward
total_in, total_out = newBlock.count_totals()
mine_reward = Transactions.Tx()
mine_reward.add_output(miner_public, 25.0 + total_in - total_out)
newBlock.addTx(mine_reward)
# Find nonce
if verbose: print("Finding Nonce...")
newBlock.find_nonce(10000)
if newBlock.good_nonce():
if verbose: print("Good nonce found")
if not newBlock.previousBlock in head_blocks:
break
head_blocks.remove(newBlock.previousBlock)
head_blocks.append(newBlock)
# Send new block
savePrev = newBlock.previousBlock
newBlock.previousBlock = None
for ip_addr, port in wallet_list:
if verbose: print("Sending to " + ip_addr + ":" + str(port))
SocketUtils.sendObj(ip_addr, newBlock, port)
newBlock.previousBlock = savePrev
# Remove used txs from tx_list
for tx in newBlock.data:
if tx != mine_reward:
tx_list.remove(tx)
TxBlock.saveBlocks(head_blocks, "AllBlocks.dat")
return True
def nonceFinder(wallet_list, miner_public):
global break_now
try:
head_blocks = TxBlock.loadBlocks("AllBlocks.dat")
except:
print("No previous blocks found. Starting fresh.")
head_blocks = [None]
# add Txs to new block
while not break_now:
newBlock = TxBlock.TxBlock(TxBlock.findLongestBlockchain(head_blocks))
placeholder = Transactions.Tx()
placeholder.add_output(miner_public,25.0)
newBlock.addTx(placeholder)
#sort tx_list by tx fee per byte
for tx in tx_list:
newBlock.addTx(tx)
if not newBlock.check_size():
newBlock.removeTx(tx)
break
newBlock.removeTx(placeholder)
if verbose: print("new Block has " + str(len(newBlock.data)) + "txs.")
# Compute and add mining reward
total_in,total_out = newBlock.count_totals()
mine_reward = Transactions.Tx()
mine_reward.add_output(miner_public,25.0+total_in-total_out)
newBlock.addTx(mine_reward)
# Find nonce
if verbose: print ("Finding Nonce...")
newBlock.find_nonce(10000)
if newBlock.good_nonce():
if verbose: print ("Good nonce found")
head_blocks.remove(newBlock.previousBlock)
head_blocks.append(newBlock)
# Send new block
savePrev = newBlock.previousBlock
newBlock.previousBlock = None
for ip_addr,port in wallet_list:
if verbose: print ("Sending to " + ip_addr + ":" + str(port))
SocketUtils.sendObj(ip_addr,newBlock,5006)
newBlock.previousBlock = savePrev
# Remove used txs from tx_list
for tx in newBlock.data:
if tx != mine_reward:
tx_list.remove(tx)
TxBlock.saveBlocks(head_blocks,"AllBlocks.dat")
return True
def sendCoins(pu_send, amt_send, pr_send, pu_recv, amt_recv):
global tx_index
newTx = Transactions.Tx()
if not pu_send in tx_index:
tx_index[pu_send] = 0
newTx.add_input(pu_send, amt_send, tx_index[pu_send])
newTx.add_output(pu_recv, amt_recv)
newTx.sign(pr_send)
for ip, port in miners:
SocketUtils.sendObj(ip, newTx, port)
tx_index[pu_send] = tx_index[pu_send] + 1
return True
if __name__ == "__main__":
import Signatures
import threading
import time
my_pr, my_pu = Signatures.loadKeys("private.key", "public.key")
t1 = threading.Thread(target=minerServer, args=(('localhost', 5005), ))
t2 = threading.Thread(target=nonceFinder, args=(wallets, my_pu))
server = SocketUtils.newServerConnection('localhost', 5006)
t1.start()
t2.start()
pr1, pu1 = Signatures.generate_keys()
pr2, pu2 = Signatures.generate_keys()
pr3, pu3 = Signatures.generate_keys()
Tx1 = Transactions.Tx()
Tx2 = Transactions.Tx()
Tx1.add_input(pu1, 4.0)
Tx1.add_input(pu2, 1.0)
Tx1.add_output(pu3, 4.8)
Tx2.add_input(pu3, 4.0)
Tx2.add_output(pu2, 4.0)
Tx2.add_reqd(pu1)
Tx1.sign(pr1)
Tx1.sign(pr2)
Tx2.sign(pr3)
Tx2.sign(pr1)
new_tx_list = [Tx1, Tx2]
