tls_server.py

import socket, ssl

bindsocket = socket.socket()
bindsocket.bind(('', 12345))
bindsocket.listen(5)

ssock = ssl.wrap_socket(bindsocket,
        server_side=True,
        certfile="server.crt",
        keyfile = "server.key")

print('Start tcp echo reverse server')

while True:
    try:
        print('Waiting client')
        csock, caddr = ssock.accept()
        print('Connected with {0}'.format(caddr))
        data = csock.recv(1500)
        print('Received {0} bytes from {1}'.format(len(data), caddr))
        msg = data.decode('utf-8')[::-1].encode('utf-8')
        csock.sendall(msg)
        print('Echoed {0} to {1}'.format(msg, caddr))
        csock.close()
    except KeyboardInterrupt:
        print('Terminated TCP echo reverse server')
        break