Hi,
On Mon, Aug 26, 2019 at 3:06 PM Luiz Augusto von Dentz
<luiz.dentz@xxxxxxxxx> wrote:
>
> From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
>
> The spec mandates that a CCC exists if either notify or indicate
> property is marked:
>
> BLUETOOTH CORE SPECIFICATION Version 5.1 | Vol 3, Part G page 2357
>
> "If set, the Client Characteristic Configuration Descriptor shall
> exist."
> ---
> src/shared/gatt-client.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/src/shared/gatt-client.c b/src/shared/gatt-client.c
> index 225915d43..38a416ed3 100644
> --- a/src/shared/gatt-client.c
> +++ b/src/shared/gatt-client.c
> @@ -659,6 +659,31 @@ static bool discover_descs(struct discovery_op *op, bool *discovering)
>
> desc_start = chrc_data->value_handle + 1;
>
> + if (desc_start == chrc_data->end_handle &&
> + (chrc_data->properties & BT_GATT_CHRC_PROP_NOTIFY ||
> + chrc_data->properties & BT_GATT_CHRC_PROP_INDICATE)) {
> + bt_uuid_t ccc_uuid;
> +
> + /* If there is only one descriptor that must be the CCC
> + * in case either notify or indicate are supported.
> + */
> + bt_uuid16_create(&ccc_uuid,
> + GATT_CLIENT_CHARAC_CFG_UUID);
> + attr = gatt_db_insert_descriptor(client->db, desc_start,
> + &ccc_uuid, 0, NULL,
> + NULL, NULL);
> + if (attr) {
> + free(chrc_data);
> + continue;
> + }
> + }
> +
> + /* Check if the start range is within characteristic range */
> + if (desc_start > chrc_data->end_handle) {
> + free(chrc_data);
> + continue;
> + }
> +
> client->discovery_req = bt_gatt_discover_descriptors(
> client->att, desc_start,
> chrc_data->end_handle,
> --
> 2.21.0
Applied.
--
Luiz Augusto von Dentz
