Return empty sting to simulate an EOF with ^]

    def recv(self, size):

        data =  os.read(0, size)

        if "\x1d" in data:

            # we need to raise a IOError to make sjrpc end the connection

            raise IOError("Connexion cancelled by user")

            # return empty sting to simulate an EOF instead of raise

            # and execption

            return ""

        return data

    def send(self, data):