HELP! NosCrypto usage

import socket
import struct
from noscrypto import Server,Client

# the public network interface
HOST = socket.gethostbyname(socket.gethostname())
print(HOST)
# create a raw socket and bind it to the public interface
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_IP)
s.bind((HOST, 0))
# Include IP headers
s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
# receive all packages
s.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON)


n=1
while(n <= 400):
    data = s.recvfrom(65565)
    
    packet=data[0]
    address= data[1]
    header=struct.unpack('!BBHHHBBHBBBBBBBB', packet[:20])
    
    try:
        x = Client.WorldDecrypt(packet)
        print(x)
    except:
        print("error")
    
    n+=1