ATSメモ
The server must support at least Transport Layer Security (TLS) protocol version 1.2. TLS1.2が必要 https://developer.apple.com/library/prerelease/ios/technotes/App-Transport-Security-Technote/index.html
openssl 0.9.8はTLS1.2 , TLS1.1をサポートしてない。 https://www.suse.com/communities/conversations/tls-1-2/