import socket

s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(("172.30.115.236", 777))
buff,addr=s.recvfrom(10)
print (buff)
msg="hello"
s.sendto(msg.encode(), addr)
bb9324df7d580dd3d50ccd3b0b00df588eac5a7f
<mask token>

<mask token>
s.bind(('172.30.115.236', 777))
<mask token>
print(buff)
<mask token>
s.sendto(msg.encode(), addr)

<mask token>
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(('172.30.115.236', 777))
buff, addr = s.recvfrom(10)
print(buff)
msg = 'hello'
s.sendto(msg.encode(), addr)

import socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(('172.30.115.236', 777))
buff, addr = s.recvfrom(10)
print(buff)
msg = 'hello'
s.sendto(msg.encode(), addr)

import socket

s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(("172.30.115.236", 777))
buff,addr=s.recvfrom(10)
print (buff)
msg="hello"
s.sendto(msg.encode(), addr)