Add one stage pipeline to /ok

src/http_handler.cpp

@@ -113,8 +113,12 @@ void HttpHandler::on_data_arrived(std::string_view data,
       break;
     }
 
-    // Connection state will be reset when appropriate by the server
-    // For now, we don't reset immediately since messages may still be queued
+    {
+      auto guard = ok_pipeline.push(1, true);
+      for (auto &c : guard.batch) {
+        c = std::move(conn_ptr);
+      }
+    }
   }
 }