1 files changed, 15 insertions, 0 deletions
diff --git a/include/middleware.h b/include/middleware.h
index 270e026..5e358af 100644
--- a/include/middleware.h
+++ b/include/middleware.h
@@ -4,6 +4,21 @@
 
 namespace crow
 {
+    // Any middleware requires following 3 members:
+
+    // struct context;
+    //      storing data for the middleware; can be read from another middleware or handlers
+
+    // template <typename AllContext>
+    // void before_handle(request& req, response& res, context& ctx, AllContext& all_ctx)
+    //      called before handling the request.
+    //      if res.end() is called, the operation is halted. 
+    //      (still call after_handle of this middleware)
+
+    // template <typename AllContext>
+    // void after_handle(request& req, response& res, context& ctx, AllContext& all_ctx)
+    //      called after handling the request.
+
     class CookieParser
     {
         struct context