:orphan:

.. title:: BT_GATT_ENFORCE_CHANGE_UNAWARE

.. option:: CONFIG_BT_GATT_ENFORCE_CHANGE_UNAWARE

*GATT Enforce change-unaware state*

Type: ``bool``

Help
====

When enable this option blocks notification and indications to client
to conform to the following statement from the Bluetooth 5.1
specification:
'...the server shall not send notifications and indications to such
a client until it becomes change-aware."
In case the service cannot deal with sudden errors (-EAGAIN) then it
shall not use this option.

Direct dependencies
===================

\ :option:`BT_GATT_CACHING <CONFIG_BT_GATT_CACHING>` && \ :option:`BT_GATT_CACHING <CONFIG_BT_GATT_CACHING>` && \ :option:`BT_CONN <CONFIG_BT_CONN>` && \ :option:`BT_HCI_HOST <CONFIG_BT_HCI_HOST>` && \ :option:`BT_HCI <CONFIG_BT_HCI>` && \ :option:`BT <CONFIG_BT>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

No defaults. Implicitly defaults to ``n``.

Kconfig definition
==================

.. highlight:: kconfig

At ``subsys/bluetooth/host/Kconfig.gatt:104``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:34`` → ``subsys/Kconfig:9`` → ``subsys/bluetooth/Kconfig:239`` → ``subsys/bluetooth/host/Kconfig:507``

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → ATT and GATT Options → GATT Service Changed support → GATT Caching support

.. parsed-literal::

    config BT_GATT_ENFORCE_CHANGE_UNAWARE
    	bool "GATT Enforce change-unaware state"
    	depends on \ :option:`BT_GATT_CACHING <CONFIG_BT_GATT_CACHING>` && \ :option:`BT_GATT_CACHING <CONFIG_BT_GATT_CACHING>` && \ :option:`BT_CONN <CONFIG_BT_CONN>` && \ :option:`BT_HCI_HOST <CONFIG_BT_HCI_HOST>` && \ :option:`BT_HCI <CONFIG_BT_HCI>` && \ :option:`BT <CONFIG_BT>`
    	help
    	  When enable this option blocks notification and indications to client
    	  to conform to the following statement from the Bluetooth 5.1
    	  specification:
    	  '...the server shall not send notifications and indications to such
    	  a client until it becomes change-aware."
    	  In case the service cannot deal with sudden errors (-EAGAIN) then it
    	  shall not use this option.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*