Cross-Origin Resource Sharing (CORS)

When you create a web container, you specify a config section name. In the example below it’s myapp:web:

asab.web.WebContainer(self.WebService, "myapp:web")

You can then configure CORS by running your app with a config file with this contents:

  • cors: contents of the Access-Control-Allow-Origin header
  • cors_preflight_paths: a pattern for endpoints that shall return responses to pre-flight requests (OPTIONS). Value must start with “/”.