Question 1

How to add a custom OAuth2 provider in hoauth2?

Accepted Answer

You can define a new provider by configuring the OAuth2 endpoints and parameters in Haskell code, using the type-safe interfaces from the hoauth2 package. The hoauth2-providers-tutorial offers examples for extending beyond pre-configured providers like Google.

Question 2

hoauth2 vs http-client-oauth2 in Haskell?

Accepted Answer

hoauth2 focuses on a pure functional, type-safe approach with pre-built provider support, while http-client-oauth2 is lower-level and integrated with the http-client library. Choose hoauth2 for easier integration with common providers, and http-client-oauth2 for more control over HTTP requests.

Question 3

What OAuth2 grant types does hoauth2 support?

Accepted Answer

hoauth2 primarily implements the authorization code grant flow, as stated in the key features, which is the most common for web applications. Other standard grants may require additional configuration or extensions.

Question 4

How to handle token refresh with hoauth2?

Accepted Answer

The library provides functions for managing access tokens, including refresh token handling, by leveraging OAuth2 mechanisms. Refer to the tutorials for code examples on automating token renewal in Haskell applications.

Question 5

Is hoauth2 suitable for mobile app authentication?

Accepted Answer

It's designed for server-side Haskell applications; for mobile apps, you'd typically use hoauth2 on the backend to authenticate users, while the mobile client handles OAuth2 redirects independently.

Question 6

Can hoauth2 work with Yesod or Scotty web frameworks?

Accepted Answer

Yes, hoauth2 is framework-agnostic and can be integrated into any Haskell web application, including Yesod or Scotty, by using its pure functional interfaces for OAuth2 callbacks and token management.

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