Merge pull request #356 from stephenafamo/unrwap-writer

Add WrappingResponseWriter interface

client_state.go

@@ -95,6 +95,13 @@ type UnderlyingResponseWriter interface {
 	UnderlyingResponseWriter() http.ResponseWriter
 }
 
+// WrappingResponseWriter is a response writer that can be unwrapped
+// is is used identically to [UnderlyingResponseWriter] but uses the standard
+// set out in [http.ResponseContoller]
+type WrappingResponseWriter interface {
+	Unwrap() http.ResponseWriter
+}
+
 // ClientState represents the client's current state and can answer queries
 // about it.
 type ClientState interface {
@@ -185,6 +192,11 @@ func MustClientStateResponseWriter(w http.ResponseWriter) *ClientStateResponseWr
 			continue
 		}
 
+		if u, ok := w.(WrappingResponseWriter); ok {
+			w = u.Unwrap()
+			continue
+		}
+
 		panic(fmt.Sprintf("ResponseWriter must be a ClientStateResponseWriter or UnderlyingResponseWriter in (see: authboss.LoadClientStateMiddleware): %T", w))
 	}
 }