lessons period 2

period_2/02-sockets/903/Miner_a.py

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+
+from SocketUtil import *
+import TxBlock as Tx
+# import Tx
+
+SERVER = 'localhost'
+
+wallet_list = [SERVER]
+tx_list = []
+
+def minerServer(my_ip, wallet_list):
+    miner_server_socket = newServerSocket(my_ip, 5050)
+
+    # receive 2 transactions
+    for i in range(10):
+        newTx = recvObj(miner_server_socket)
+        if isinstance(newTx, Tx):
+            tx_list.append(newTx)
+            print("Received Tx")
+        if len(tx_list) == 2:
+            break
+
+    if len(tx_list) < 2:
+        print("Error! Not enough transactions received.")
+        return
+    
+    # collect into block
+    newBlock = TxBlock(None)
+    for tx in tx_list:
+        newBlock.addTx(tx)
+
+    # find nonce
+    newBlock.find_nonce()
+    if newBlock.good_nonce():
+        print("Success! Nonce is valid.")
+    else:
+        print("Error! Nonce is invalid.")
+        return
+    
+    # send that block to each in wallet_list
+    for wallet in wallet_list:
+        sendObj(wallet, newBlock)
+
+    return
+
+
+    # Open Server Connection
+    # Rec'v 2 transactions
+    # Collect into block
+    # Find nonce
+    # Send that block to each in walle_list
+    # return
+
+
+def minerServer(my_ip, wallet_list):
+    # open server connection for the miner
+    server_socket = newServerSocket(my_ip, 5050)
+    print('Server is ready to receive data ...')
+
+    # receive 2 transactions
+    data = recvObj(server_socket)
+    print('Server is receiving data ...')
+    if data:
+        print('Data: ', type(data), '\n')
+    else:
+        print('No object received')
+
+    # collect into block
+    if data:
+        block = TxBlock(None)
+        block.addTx(data)
+    data = recvObj(server_socket)
+    if data:
+        block.addTx(data)
+    server_socket.close()
+
+    # find nonce
+    block.find_nonce()
+    # send that block to each in wallet_list
+    for wallet in wallet_list:
+        sendObj(wallet, block)
+
+    return
+
+
+minerServer('localhost', wallet_list)