LE Reverse Service Discovery

I¹ve noticed that since around BlueZ 5.27, GATT client functionality is
enabled for all devices.

From a LE Peripheral's perspective, this results in unconditional reverse

service discovery of a Central's GATT services.

It seems like this will not always be necessary depending on the use case,
and disabling GATT client functionality should save energy and time.  My
iPhone, for example, has about 8 services that my Peripheral doesn¹t care
about.

I¹m considering making an attempt to disable this, as the BT spec says
GATT clients are optional for LE peripherals. (BT 4.2, Vol 3, Part C,
Table 15.1), but I first would like to ask if anyone has any insight on
why it may be desirable to keep the client functionality enabled.

Thanks!
Adam



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