Gab Social. All are welcome.

app/controllers/well_known/host_meta_controller.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module WellKnown
+  class HostMetaController < ActionController::Base
+    include RoutingHelper
+
+    before_action { response.headers['Vary'] = 'Accept' }
+
+    def show
+      @webfinger_template = "#{webfinger_url}?resource={uri}"
+
+      respond_to do |format|
+        format.xml { render content_type: 'application/xrd+xml' }
+      end
+
+      expires_in(3.days, public: true)
+    end
+  end
+end