Instance Method flush With Completion Handler:
Flushes cookies and credentials to disk, clears transient caches, and ensures that future requests occur on a new TCP connection.
iOS 7.0+ macOS 10.9+ Mac Catalyst 13.0+ Beta tvOS 9.0+ watchOS 2.0+ Declaration - ( ) void flushWithCompletionHandler:( ) void (^)( void) completionHandler;
The completion handler to call when the flush operation is complete. This handler is executed on the delegate queue.
See Also Managing the Session - reset With Completion Handler:
Empties all cookies, caches and credential stores, removes disk files, flushes in-progress downloads to disk, and ensures that future requests occur on a new socket.
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