title: NSURLSession not using configured proxy
body: <p>I am using an NSURLSession to make a simple HTTPS GET request like so with a HTTPS proxy:</p>
  
  <pre><code>NSURL *url = [NSURL URLWithString:@"https://www.mysecureurl.com"];
  
  NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
  NSDictionary *proxyDictionary = [NSDictionary dictionaryWithObjectsAndKeys:@"127.0.0.1", @"kCFProxyHostNameKey", @1234, @"kCFProxyPortNumberKey", @"kCFProxyTypeHTTPS", @"kCFProxyTypeKey", nil];
  config.connectionProxyDictionary = proxyDictionary;
  
  NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
  NSURLSessionDataTask *dataTask = [session dataTaskWithURL:url completionHandler: ^ (NSData *data, NSURLResponse *response, NSError *error) {
      if (!error) {
          NSLog(@"%@", [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]); //The URL returns the requesters IP address, thus the NSLog should be the IP of the proxy.
      } else {
          NSLog(@"%@", error.description);
      }
  }];
  [dataTask resume];
  </code></pre>
  
  <p>However when I run this code, no error is logged, but my actual IP address is logged when I am expecting to see the proxy's IP address logged. Effectively the NSURLSession isn't using the proxy but still makes the request using my IP address. Why this is I cannot work out and would appreciate any sort of direction.</p>
  
  <p>Josh</p>