for iteration in range(ITERATIONS):
if iteration % 10 == 0:
print('iteration %s' % iteration)
action = random()
if ((action < 0.05 and from_client)
or (action < 0.5 and len(from_client) >= MAX_FROM_CLIENT)):
number_to_check = randint(1, len(from_client))
# print('recv from client (%s of %s)' %
# (number_to_check, len(from_client)))
for b in from_client[:number_to_check]:
# print('recv from client')
actual_length = clientsocket.myreceive(2)
expected_length = get_length_in_network_bytes(b)
# print(expected_length)
# print(actual_length)
assert actual_length == expected_length
actual_data = clientsocket.myreceive(len(b))
# print(b)
# print(actual_data)
assert actual_data == b
from_client = from_client[number_to_check:]
elif action < 0.5:
# print('write from client')
b = generate_random_bytes_line()
client.stdin.write(b + b'\n')
client.stdin.flush()
from_client.append(b)
for iteration in range(ITERATIONS):
if iteration % 10 == 0:
print('iteration %s' % iteration)
action = random()
if ((action < 0.05 and from_client)
or (action < 0.5 and len(from_client) >= MAX_FROM_CLIENT)):
number_to_check = randint(1, len(from_client))
# print('recv from client (%s of %s)' %
# (number_to_check, len(from_client)))
for b in from_client[:number_to_check]:
# print('recv from client')
actual_length = clientsocket.myreceive(2)
expected_length = get_length_in_network_bytes(b)
# print(expected_length)
# print(actual_length)
assert actual_length == expected_length
actual_data = clientsocket.myreceive(len(b))
# print(b)
# print(actual_data)
assert actual_data == b
from_client = from_client[number_to_check:]
elif action < 0.5:
# print('write from client')
b = generate_random_bytes_line()
client.stdin.write(b + b'\n')
client.stdin.flush()
from_client.append(b)
sendall() :TCP
recvfrom() :UDP
recvfrom_into() :UDP
sendto() :UDP
'''
HOST = 'localhost'
# HOST = '::1'
PORT = 9999
ADDR = (HOST, PORT)
if __name__ == "__main__":
# s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
# s.settimeout(5)
# s.connect(ADDR)
# print(s.recv(1024).decode('utf-8'))
# for data in [b'Tony', b'Nick', b'Ulysses']:
# s.send(data)
# print(s.recv(1024).decode('utf-8'))
# s.send(b'exit')
# s.close()
s = MySocket()
s.connect(HOST, PORT)
print(s.myreceive(32).decode('utf-8'))
for data in [b'Tony', b'Nick', b'Ulysses']:
print(len(data))
s.mysend(data)
print(s.myreceive(32).decode('utf-8'))
s.mysend(b'exit')
s.close()
if __name__ == "__main__":
IP = "chals3.umdctf.io"
PORT = 6001
SUFFIX = '\n\n'
addtuple = (IP, PORT)
# create an INET, STREAMing socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client = MySocket(s)
client.connect(IP, PORT)
initialMessage = client.myreceive2Suffix(SUFFIX)
print("{}\nMessage : {}".format(initialMessage, len(initialMessage)))
response = "\n".encode()
client.mysend(response)
arr = client.myreceive2Suffix(SUFFIX)
# Before passing the list along we have to clean the data,
# becasue it is a string at this point
print("{}\nArray : {}".format(arr, len(arr)))
newarr = arr.lstrip("[").rstrip("]\n")
listRes = list(newarr.split(", "))
listInts = list(map(int, listRes))
result = maxSubArraySum(listInts, len(listInts))
response = "{}, {}, {}".format(*result).encode()
print("Response is: {} ".format(response.decode()))
client.mysend(response)
flag = client.myreceive()
print(flag)
