keep alive setting for server and websocket improvements

src/asio_webserver/clientconnection.cpp

@@ -53,7 +53,7 @@ void ClientConnection::responseFinished(std::error_code ec)
         return;
     }
 
-    if constexpr (true) // Connection: Keep
+    if (m_webserver.connectionKeepAlive())
     {
 //        ESP_LOGD(TAG, "state changed to RequestLine");
         m_state = State::RequestLine;

src/asio_webserver/webserver.h

@@ -18,6 +18,8 @@ public:
     Webserver(asio::io_context& io_context, unsigned short port);
     virtual ~Webserver() = default;
 
+    virtual bool connectionKeepAlive() const = 0;
+
     virtual std::unique_ptr<ResponseHandler> makeResponseHandler(ClientConnection &clientConnection, std::string_view method, std::string_view path, std::string_view protocol) = 0;
 
 protected: