Hi,
I'm trying to change my ASP.NET WebForm site's Google authentication to GooglePlus. I followed these instructions
https://developers.google.com/+/web/signin/add-button and the callback function does return my user's authenticated email.
I want to pass the authenticated email to my codebehind for further processing. I've read I can do this with a hidden field and triggering a doPostback in login.aspx, but this seems unsafe.
I've tried enabling page events with a script manager, and calling the JavaScript function SetSession(email) with a codebehind void as shown below, but the G+ authentication popup gets stuck with a blank window and no further processing seems to be happening.
I'll try looking at what's happening using Fiddler.
I have some experience with WCF Services, so I will also try passing the email to a service within my site over https.
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