protostar net3

 

import struct
import socket
import time

def until(s, string):
    data = b''
    while string not in data:
        data += s.recv(1)
    return data

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('192.168.249.139', 2997))

l = list()
l.append(int(struct.unpack('<I',s.recv(4))[0]))
l.append(int(struct.unpack('<I',s.recv(4))[0]))
l.append(int(struct.unpack('<I',s.recv(4))[0]))
l.append(int(struct.unpack('<I',s.recv(4))[0]))

result = int(sum(l))
print(l)
print('sum : '+str(result))
s.send(struct.pack('<I', result))
print(str(s.recv(1024)))
s.close()

import socket
import struct

s = socket.socket()
s.connect(("192.168.56.101",2997))

sum = 0
for i in range(4):
	data = s.recv(4)
	data = "%d\n" % (struct.unpack('<i', data))
	sum += int(data)

s.send(struct.pack("<I", sum))
print s.recv(1024)
s.close()