I try to implement the iOS9
Universal Links
.
I m using this tutorial: http://blog.hokolinks.com/how-to-implement-apple-universal-links-on-ios-9
cat json.txt | openssl smime -sign -inkey website.key -signer website_com.cert -noattr -nodetach -outform DER > apple-app-site-association
This command creates apple-app-site-association
file that you have store on root directory of your web server. ANd website.key and webiste.cert these files you'll get in ssl folder when you connect to your webserver via ftp if you have ssl website if not then first get ssl certifcate for your server