Can SMP characteristic use Write With Response?

[JPHutchins]

Are there any reasons not to add a Kconfig that enables write with response on the SMP characteristic?

zephyr/subsys/mgmt/mcumgr/transport/src/smp_bt.c

Lines 356 to 368 in fe03e0c

	#define SMP_BT_ATTRS \
	BT_GATT_PRIMARY_SERVICE(&smp_bt_svc_uuid), \
	BT_GATT_CHARACTERISTIC(&smp_bt_chr_uuid.uuid, \
	BT_GATT_CHRC_WRITE_WITHOUT_RESP | \
	BT_GATT_CHRC_NOTIFY, \
	COND_CODE_1(CONFIG_MCUMGR_TRANSPORT_BT_AUTHEN, \
	(BT_GATT_PERM_WRITE_AUTHEN), \
	(BT_GATT_PERM_WRITE)), \
	NULL, smp_bt_chr_write, NULL), \
	BT_GATT_CCC(smp_bt_ccc_changed, \
	COND_CODE_1(CONFIG_MCUMGR_TRANSPORT_BT_AUTHEN, \
	(BT_GATT_PERM_READ_AUTHEN | BT_GATT_PERM_WRITE_AUTHEN), \
	(BT_GATT_PERM_READ | BT_GATT_PERM_WRITE))),

Working through some compatibility issues with MacOS but I suspect it's a symptom of a bigger problem.

hbldh/bleak#1589

intercreate/smpclient#30

FYI @nordicjm @fabiobaltieri

[fabiobaltieri]

cc @de-nordic

[nordicjm]

Yes there is because it uses notifications, not indications.