iOS7:NSURLSessionのhttp（cookie)でハマった

 // セッション種類
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
// セッション作成
NSURLSession *urlSession = [NSURLSession sessionWithConfiguration:  defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
//cookieのプロパティ設定
NSMutableDictionary *properties =
[NSMutableDictionary    dictionaryWithObjectsAndKeys:
@"http://www.hoge.com", NSHTTPCookieOriginURL,
@"key", NSHTTPCookieName,
@"value", NSHTTPCookieValue,
nil
];
//cookie作成
NSHTTPCookie cookie = [NSHTTPCookie cookieWithProperties:properties];
NSArray cookies = [NSArray arrayWithObject:cookie];
NSDictionary * headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies];
//リクエスト作成
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.hoge.com/"]];
[request setHTTPMethod:@"GET"];
[request setAllHTTPHeaderFields:headers];
// データタスクを実行します
[[urlSession dataTaskWithRequest:(NSURLRequest ) request
completionHandler:^(NSData data, NSURLResponse response,NSError error)
{
NSLog(@"Got response %@ with error %@.\n", response, error);
NSLog(@"DATA:\n%@\nEND DATA\n",[[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding]);
}] resume];

NSMutableDictionary *properties =
    [NSMutableDictionarydictionaryWithObjectsAndKeys:
    @"www.hoge.com",NSHTTPCookieDomain,
    @"\\", NSHTTPCookiePath, // IMPORTANT!
    @"key", NSHTTPCookieName,
    @"value", NSHTTPCookieValue,
    nil
];