def async_setup_service(hass, host, device):
    """Register a device for given host for use in services."""
    hass.data.setdefault(DOMAIN, {})[host] = device

    if not hass.services.has_service(DOMAIN, SERVICE_LEARN):

        async def _learn_command(call):
            """Learn a packet from remote."""
            device = hass.data[DOMAIN][call.data[CONF_HOST]]

            try:
                #auth = await hass.async_add_executor_job(device.auth)
                auth = device.auth
            except socket.timeout: