pub unsafe extern "C" fn SCNetworkReachabilitySetCallback(
target: SCNetworkReachabilityRef,
callout: SCNetworkReachabilityCallBack,
context: *mut SCNetworkReachabilityContext
) -> Boolean
pub unsafe extern "C" fn SCNetworkReachabilitySetCallback(
target: SCNetworkReachabilityRef,
callout: SCNetworkReachabilityCallBack,
context: *mut SCNetworkReachabilityContext
) -> Boolean