Command to check ATS configuration of URL in mac

 The below terminal command helps us get detailed ATS check on specific URL

nscurl --ats-diagnostics <URL>

How to use http in iOS 9

From iOS 9 apple has adopted ATS(Application Transport Security) which is set of standards that paves way for secured communication and https is one of them.

You can bypass this adding the following key in iOS

NSAppTransportSecurity</key> NSAllowsArbitraryLoads</key> <true/></dict>