Use hash in switch method instead of map list

tests/signal_server/ws_handle_manager.h

@@ -0,0 +1,24 @@
+#ifndef _WS_HANDLE_MANAGER_H_
+#define _WS_HANDLE_MANAGER_H_
+
+#include <iostream>
+#include <websocketpp/server.hpp>
+
+class WsHandleManager {
+ public:
+  WsHandleManager();
+  ~WsHandleManager();
+
+ public:
+  bool BindHandleToConnection(websocketpp::connection_hdl hdl,
+                              std::string& connection_id);
+  bool ReleaseHandleFromConnection(websocketpp::connection_hdl hdl,
+                                   std::string& connection_id);
+
+  const std::string& GetConnectionId(websocketpp::connection_hdl hdl);
+  websocketpp::connection_hdl GetWsHandle(std::string& connection_id);
+
+ private:
+};
+
+#endif