Trouble Configuring ASP.NET Core Identity with External OAuth Providers for Production Deployment
I tried several approaches but none seem to work. I'm working on a personal project and While implementing a new feature in our ASP.NET Core application, integrating external OAuth providers has presented some challenges, especially with the transition to production. We're using ASP.NET Core 6.0 and recently set up authentication through Google and Facebook. Despite following the official documentation, we're running into unexpected behavior when users attempt to log in. After configuring the `Startup.cs` for authentication, it looks something like this: ```csharp services.AddAuthentication(options => { options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme; options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme; }) .AddCookie() .AddGoogle(options => { options.ClientId = "your-client-id"; options.ClientSecret = "your-client-secret"; }) .AddFacebook(options => { options.AppId = "your-app-id"; options.AppSecret = "your-app-secret"; }); ``` Users can authenticate successfully during local development. However, on production, we're seeing a `401 Unauthorized` response when they try to log in through Google. The callback URL appears to be correct, as it's set in the Google Cloud console. I've double-checked the redirect URI, and it matches exactly what’s specified in our application settings: ``` https://yourdomain.com/signin-google ``` To troubleshoot, I added logging to see the values being processed, and it seems that the authentication handler is not even reaching the callback action. I’ve also verified that the `TokenEndpoint` and `UserInformationEndpoint` are correctly configured on the Google side. We have attempted to use `UseDeveloperExceptionPage()` in production, which is not recommended but might help reveal more information. Still, nothing has surfaced that points to the root cause. Additionally, our logs show: ``` info: Microsoft.AspNetCore.Authentication.Google.GoogleHandler[2] Authentication failed for the scheme 'Google'. ``` The challenge is compounded by needing to ensure this works seamlessly across both OAuth providers. Have there been any best practices or common pitfalls in similar setups? Suggestions for debugging this in a production environment would also be greatly appreciated. Furthermore, I want to ensure our implementation aligns with best practices for user privacy and security. Any insights on how to manage user data effectively when integrating these external providers would also be valuable. Thanks in advance for your help! My development environment is Ubuntu. I'm working on a CLI tool that needs to handle this. How would you solve this?