NSURLSession Memory Leaks occur when using web services in IOS

Question

I am building an app that uses a web service and to get information from that web service I use NSURLSession and NSURLSessionDataTask.

I am now

Answer 1

After rereading the URL Loading System Programming Guide it turns that I was setting the NSURLSession property to nil too early.

Instead, I need to set the NSURLSession property to nil AFTER I receive the delegate message URLSession:(NSURLSession *)session didBecomeInvalidWithError:(NSError *)error, which makes sense. Luckily, it was a minor mistake.

E.g.

- (void)URLSession:(NSURLSession *)session didBecomeInvalidWithError:(NSError *)error
{
    if (error)
    {

#ifdef DEBUG
        NSLog(@"[GPPhotoRequest] Session Invalidation: %@", [error description]);
#endif

    }

    if ([session isEqual:_session])
    {
        [self cleanupSession];
    }
}