Invoked when the central manager fails to create a connection with a peripheral.
- iOS 5.0+
- macOS 10.7+
- tvOS 9.0+
- watchOS 4.0+
- Core Bluetooth
The central manager providing this information.
The peripheral that failed to connect.
The cause of the failure.
This method is invoked when a connection initiated via the
connect method fails to complete. Because connection attempts do not time out, a failed connection usually indicates a transient issue, in which case you may attempt to connect to the peripheral again.