using UseGoogleAuthentication

Question

I am trying to build an application with google as the identity provider in asp.net core.

I used the bootstrap web application initialized by the dotnet cli tool:

dotnet new --type web

I added the Microsoft.AspNetCore.Authentication.Google nuget in my project.json.

I created a google application and a clientid/secret and added the google middle ware:

app.UseGoogleAuthentication(new GoogleOptions{
                ClientId = "<clientId>",
                ClientSecret = "<clientSecret>"
            });

But then, following the tutorial here, the following line should return a loginProvider collection with one element:

SignInManager.GetExternalAuthenticationSchemes()

But all I get is an empty IEnumerable. I tried to follow the source code but failed to find what I am doing wrong (bad client id configuration, missed something in Startup Configure(Service) functions).

How to get SignInManager.GetExternalAuthenticationSchemes() to return the google loginProvider?

Strange, it has nothing to do with Ids, it won't validate even if we put some value there. You're using the same code as generated by dotnet new right? I did the same and working without any issue — Anuraj
– Anuraj, Commented Jul 5, 2016 at 0:49

Community · Accepted Answer · 2017-05-23 12:17:17Z

3

After some tests I figured it out. My mistake was to use UseGoogleAuthentication after UseMvc. Moving it just before fixes my issue.

I guess this posts explains it:

Developer Exception Page is blank if added to IApplicationBuilder after MVC

edited May 23, 2017 at 12:17

CommunityBot

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answered Jul 10, 2016 at 5:58

Simon Bergot

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1 Comment

user3777549 Over a year ago

I thought this issue was a systemic bug in Core when testing VS2017 RC2! What a simple solution. I moved my app.UseFacebookAuthentication(... middleware code above my app.UseMvc(routes =>... code and it works perfectly, Thanks!

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