[MYNEWT-295] BLE Host - Persist client characteristic configuration for bonded peers

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Nimble
• Security Level: Public (Viewable by anyone)
• Assignee: Christopher Collins
• Reporter: Christopher Collins
• Created: 19/May/16 22:16
• Updated: 21/May/16 22:29
• Resolved: 21/May/16 22:29

Description

Current Behavior

When a peer enables notifications or indications via a write to a client characteristic configuration descriptor, the change only lasts for the lifetime of the connection.

Proposed Change

The current behavior is correct for non-bonded connections. However, for bonded peers, the values of the client characteristic configuration descriptors should persist across connections. Here are a few notes about the desired behavior:

• The persisted configuration is restored when a bonded connection is restored.
• The peripheral should remember whether a characteristic changed, even if particular peer is not connected. When the peer connects and the client characteristic configuration is restored, a notification or indication should be sent immediately if appropriate.