Network debugging (or watching Application transport security) on iOS simulator

Nowhere near as good as Charles or FiddlerProxy, but quick and dirty debugging. Just set CF_NETWORK_DIAGNOSTICS to 3 in your scheme in XCode, then when it runs it will create a text file (the name of which is in the debug log) with all the network calls when your app runs.

Screen Shot 2015-10-15 at 16.23.06