diff --git a/f9/src/app.rs b/f9/src/app.rs
index 09d94d1..4d3b7aa 100644
--- a/f9/src/app.rs
+++ b/f9/src/app.rs
@@ -29,7 +29,7 @@ pub trait UserApp {
     fn get_http_listen_port(&self) -> i32;
 }
 
-struct HttpContext {
+pub struct HttpContext {
     id: u64,
     query_str: String,
     add_tick: i64,
@@ -279,4 +279,8 @@ impl App {
         });
     }
 
+    pub fn add_http_handler(&mut self, key: String, cb: Box::<dyn FnMut (&HttpContext)>) {
+        self.http_handlers.insert(key, cb);
+    }
+
 }