In iOS 9 Apple introduces Apple Transport Security(ATS). This requires that
network requests need to be sent over a secure connection. Apple Transport
Security is enabled by default, so when it is still needed to make HTTP
request to an external source out of your control, ATS needs to be
disabled. In this tutorial a request to a local server is made and ATS will
be disabled to make the connection. This tutorial is made with Xcode 7 and
built for iOS 9.