import socket
def send_answer(st):
    conn.send(st.encode())
sock = socket.socket()
sock.bind( ("", 9090) )
sock.listen(5)
try:
    while 1: 
        conn, addr = sock.accept()
        print("Send from" + addr[0]+":")
        try:
            data = conn.recv(1024)
            if data:              
                print(data.decode())
                send_answer("YES")
        except:
            send_answer("ERR")
        finally:
            conn.close()
finally: sock.close()

 import socket
import time
while True:
    conn = socket.socket()
    conn.connect( ("93.76.240.167", 9090) )
    conn.send(b"1 \n")
    tmp = conn.recv(1024)
    print( tmp.decode() )
    time.sleep(5)
    conn.close()