If I understood well, Apple now wants the developers to use HTTPS and TLS 1.2 for network calls.
Temporary, you can add this in your “Info.plist” file :
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
Just have a look to this link, it may also help you : http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/
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Update : Following some comments the above solution is not anymore working. Here is an updated solution.
- Go to your
Info.plistfile. - Add a row of Type
Dictionaryand of KeyApp Transport Security Settings. - In this Dictionary, add a row of Type
Boolean, of KeyAllow Arbitrary Loadsand of ValueYES

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Otherwise you can set Domain Exceptions. This is how to do :
- Go to your
Info.plistfile. - Add a row of Type
Dictionaryand of KeyApp Transport Security Settings. - Add a row of Type
Dictionaryand of KeyException Domains. - Add a row of Type
Dictionaryand of KeyThe domain. - Add two rows of Type
Booleanand of KeyNSExceptionAllowsInsecureHTTPLoads&NSIncludesSubdomainswith Value toYES.
Links
https://forums.developer.apple.com/message/5857#5857
2015 WWDC Session 711
iOS 9 HTTP Connection Error – StackOverflow
