serve ssl requests on both custom domain and appspot.com

[Kehinde Ayanniyi]

Am planning to develop an app that is free to the end users. The little cost of running the server will be taken care of by me, so cost saving is important in this context.

The app requires that users access via SSL/TLS, so I will be using google apps for domain to setup an SSL custom domain. Because of limited budget, using VIP with the SSL certificate is out of the option, so am left with using SNI which I guess is free for the first 5 slots. Ofcourse the down-side of using SNI SSL is that old platforms like IE on XP and Android 2.X.X will have issues with my app. As a work around to this SNI limitation, I consider to detect and redirect users on old platform where SNI will fail to the https://myapp.appspot.com instead of the default https://www.myapp.com.

So I will like to know whether after I set up custom domain with SSL for my GAE app, will I still be able to use https://myapp.appspot.com to access my app and at the same time still have the https://www.myapp.com working correctly.

[Jason Collins]

Yes, the existing https://myapp.appspot.com will continue to work after you set up SNI (or VIP) SSL on a custom domain.