Experiments with websocket client

test/websocket_client_example/websocketclient.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <asio.hpp>
+#include <asio/ssl.hpp>
+
+class WebsocketClient
+{
+public:
+    WebsocketClient(asio::io_context &io_context);
+
+    void start();
+
+private:
+    void resolve();
+    void onResolved(const std::error_code &error, asio::ip::tcp::resolver::iterator iterator);
+    void connect(const asio::ip::tcp::resolver::iterator &endpoints);
+    void onConnected(const std::error_code &error);
+    void handshake();
+    void onHandshaked(const std::error_code & error);
+    void send_request();
+    void onSentRequest(const std::error_code &error, std::size_t length);
+    void receive_response();
+    void onReceivedResponse(const std::error_code &error, std::size_t length);
+    bool readyReadLine(std::string_view line);
+    bool parseResponseLine(std::string_view line);
+    bool parseResponseHeader(std::string_view line);
+    void doReadWebSocket();
+    void onReceiveWebsocket(const std::error_code &error, std::size_t length);
+
+    void sendMessage(bool fin, uint8_t reserved, uint8_t opcode, bool mask, std::string_view payload);
+    void onMessageSent(std::error_code ec, std::size_t length, std::size_t expectedLength);
+
+    asio::ip::tcp::resolver m_resolver;
+    //asio::ssl::context m_sslCtx{asio::ssl::context::tls_client};
+    //asio::ssl::stream<asio::ip::tcp::socket> m_socket;
+    asio::ip::tcp::socket m_socket;
+    char m_receiveBuffer[1024];
+
+    enum class State { Request, ResponseLine, ResponseHeaders, ResponseBody, WebSocket };
+    State m_state { State::Request };
+
+    std::string m_parsingBuffer;
+
+    std::size_t m_responseBodySize{};
+};