This week I upgraded an older machine to the OS X 10.11 El Capitan GM Candidate. This means I can try the new NSCurl utility which has an ATS Diagnostic mode. Naturally I decided to see if it gave results that matched my expectations. The basic usage of NSCurl is as follows:$ nscurl –ats-diagnostics -v https://api.twitter.com

Source: Did ATS Change Since the GM? – Use Your Loaf