title: How to check if image exists at url
body: <p>I am trying to load a bunch of url which is a direct link to an image. The problem is that some of the images are not there and I want to check if it exists before I attempt to load it. I'm using AFNetworking and the functions that I use seem to load all the images and there's a long delay. Is there a way to just batch check all the urls for a 404 without attempting to download the image?</p>