In some cases, it is desirable to require encryption and/or authentication for server-initiated updates, as they may contain sensitive data. Currently, there is no way to do this with BlueZ. Here is a query about this feature from 2019: https://stackoverflow.com/questions/55884233 This patch implements this feature by introducing new `x-asynchronous` flags that allow a user to restrict access to a characteristic's CCCD (as well as documentation for those flags). Dagan Martinez (2): gatt: allow GATT server to dicate CCC permissions doc/gatt-api: Add 'X-asynchronous` permissions doc/gatt-api.txt | 11 ++++++++++- src/gatt-database.c | 29 +++++++++++++++++++++++++---- src/shared/att-types.h | 4 ++++ 3 files changed, 39 insertions(+), 5 deletions(-) -- 2.31.1
