actually write file when it says it is

client.py

@@ -149,6 +149,8 @@ for packet in data_packets:
 
 sha512 = sha512.hexdigest()
 
+total_data = b''.join(data_packets)
+
 if sha512 != serverhash.hex():
     print('sha512: %s' % sha512)
     print('server sha512: %s' % serverhash.hex())
@@ -157,8 +159,6 @@ if sha512 != serverhash.hex():
         f.write(total_data)
     exit()
 
-total_data = b''.join(data_packets)
-
 with open("received/"+filename, 'wb') as f:
     f.write(total_data)