[iOS] iOS9 - NSURLSession/NSURLConnection HTTP load failed.

NSURLSession/NSURLConnection HTTP load failed on iOS 9

iOS 9로 업데이트 후 NSURLConnection 에 오류가 발생하였다.

[해결방법]

NSAppTransportSecurity property 추가

[참고 사이트]

http://stackoverflow.com/questions/30739473/nsurlsession-nsurlconnection-http-load-failed-on-ios-9

http://stackoverflow.com/questions/30720813/cfnetwork-sslhandshake-failed-ios-9

https://developer.apple.com/library/prerelease/ios/technotes/App-Transport-Security-Technote/