web_server 初步改

web_server/src/Graph_WebSocket.hpp

@@ -1,7 +1,9 @@
 #pragma once
 #include "Graph_Session.hpp"
 #include <drogon/WebSocketController.h>
+#include <functional>
 #include <memory>
+#include <string>
 namespace aethera::web {
 class Graph_WebSocket final : public std::enable_shared_from_this<Graph_WebSocket> {
 public:
@@ -9,9 +11,13 @@ public:
     ~Graph_WebSocket();
     Graph_WebSocket(const Graph_WebSocket&) = delete;
     Graph_WebSocket& operator=(const Graph_WebSocket&) = delete;
+    using Callback = std::function<void(std::string_view)>;
     void start();
     void receive(std::string_view message);
     void close();
+    void register_callback(std::string key, Callback callback);
+    void unregister_callback(std::string_view key);
+    void send(std::string_view key, std::string_view frame);
 private:
     struct Private;
     std::unique_ptr<Private> d;                              /* Drogon 连接与图会话绑定。 */