import socket

s = socket.socket()
host = socket.gethostname()
port = 4444
s.bind((host, port))
s.listen()

while True:
    (connection, addr) = s.accept()
    bytes = connection.recv(1024)
    msg = bytes.decode("utf-8")
    ans = msg.upper()
    connection.send(ans.encode("utf-8"))
    connection.close()

    #msg = "Danke für das Vorbeischauen!"
   # connection.send(msg.encode("utf-8"))
    #connection.close()