关于Tomcat版Asgardeo库通过配置文件属性设置code_challenge_methods_supported与response_mode参数的可行性咨询

Hey there! Great question about setting up these OAuth 2.0/OpenID Connect parameters with the Asgardeo Tomcat library. Let’s walk through how to handle each one:

1. code_challenge_methods_supported #

This parameter ties into PKCE (Proof Key for Code Exchange) functionality. Here’s how to configure it:

• If you want to specify the PKCE challenge method your client uses (most commonly S256), you can set this via a configuration property in your app’s setup—like a .properties file or web.xml. Look for a property similar to asgardeo.oidc.code.challenge.method and set its value to your preferred method.
• For declaring multiple supported challenge methods, some library versions let you use a comma-separated list via asgardeo.oidc.code.challenge.methods (e.g., S256,plain). Note that plain is less secure and generally not recommended for production.
• A quick heads-up: This defines what your client supports, but the actual allowed methods are also controlled by your Asgardeo server’s configuration. Make sure your client’s settings align with what the server permits.

2. response_mode #

This controls how authorization responses are sent from the Asgardeo server to your client, and you absolutely can set this via configuration properties:

• Add a property like asgardeo.oidc.response.mode to your configuration file (e.g., context.xml, asgardeo.properties) and set it to a valid OIDC value:
  • query: Returns parameters in the URL query string
  • fragment: Returns parameters in the URL fragment (the default for many OIDC flows)
  • form_post: Sends parameters via an HTML form POST request
• If you need to override this default for specific requests, you can also pass the response_mode parameter directly in the authentication request URL—but the configuration file sets the global default for your app.

Quick Notes #

• Double-check your library version: Parameter names might vary slightly between releases, so confirm the exact property keys for the version you’re using.
• Ensure your configuration file is properly loaded by Tomcat (e.g., placed in the correct directory, referenced correctly in your app’s deployment descriptor).

内容的提问来源于stack exchange，提问作者Enrico Perbellini