As discussed here: https://news.ycombinator.com/item?id=4546039 https://news.ycombinator.com/item?id=4546039 iOS loads http://www.apple.com/library/test/succes

As discussed here: https://news.ycombinator.com/item?id=4546039 https://news.ycombinator.com/item?id=4546039 iOS loads http://www.apple.com/library/test/success.html http://www.apple.com/library/test/success.html automatically upon associating with a wifi AP. This is done to test whether you are on a captive network (like a lot of wireless hotspots) that requires you to login to the network first before the internet works.