Authentication with AFNetworking

Many APIs require some sort of authentication. In this episode, we explore the use of an API that authenticates with a username and password, and returns an authenticated token that has an expiration date. You'll see use of AFNetworking to deal with the request, attaching the authenticated token as an HTTP Header to outgoing requests, as well as the use of SSKeychain to abstract away the lower level Keychain API.

This is a companion discussion topic for the original entry at https://nsscreencast.com/episodes/041-authentication-with-afnetworking