아이폰 세션 유지 iphone keep session

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

    [[NSHTTPCookieStorage sharedHTTPCookieStorage] 

       setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways];

    ...

    

    return YES;

}