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I have the following block which performs a request in the background.
How may I cancel this request before it has completed?
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
NSData *thumbnailData = [NSURLConnection sendSynchronousRequest:request];
...
});
You can’t. You have to use the asynchronous interface of
NSURLConnectionto be able to cancel requests.