NSURLSession.m

- (IBAction)runTestURL:(id)sender {
	
	// 1
	NSString *dataUrl = @"https://someurl.com";
	NSURL *url = [NSURL URLWithString:dataUrl];
 
	// 2
	NSURLSessionDataTask *downloadTask = [[NSURLSession sharedSession] dataTaskWithURL:url
					completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
						// 4: Handle response here
						NSString *s = = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
					}];
	// 3
	[downloadTask resume];
}