Even after invalidate a NSURLSession, running a profile using Instruments, some classes (probably privates) called TubeManager, HTTPConnectionCache and HTTPConnectionCacheDictionary still alive in memory.
Code snippet to reproduce: NSURLSessionConfiguration* config = [NSURLSessionConfiguration defaultSessionConfiguration]; NSURLSession* session = [NSURLSession sessionWithConfiguration:config]; NSURLRequest* request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.google.com"]]; NSURLSessionDataTask* sessionDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { [session finishTasksAndInvalidate]; }]; [sessionDataTask resume];
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