Enable fallback countermeasures.
SDKs
- iOS 2.0–13.0Deprecated
- macOS 10.2–10.15Deprecated
- Mac Catalyst 13.0–13.0Deprecated
- tvOS 9.0–13.0Deprecated
- watchOS 2.0–6.0Deprecated
Framework
- Security
Declaration
kSSLSessionOptionFallback = 6
Discussion
Use this option when retyring an SSL connection with a lower protocol version because of failure to connect.