Streaming clients can connect via Websockets

server/stream_session_ws.hpp

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+/***
+    This file is part of snapcast
+    Copyright (C) 2014-2020  Johannes Pohl
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifndef STREAM_SESSION_WS_HPP
+#define STREAM_SESSION_WS_HPP
+
+#include "stream_session.hpp"
+#include <boost/beast/core.hpp>
+#include <boost/beast/websocket.hpp>
+#include <deque>
+
+namespace beast = boost::beast;         // from <boost/beast.hpp>
+namespace http = beast::http;           // from <boost/beast/http.hpp>
+namespace websocket = beast::websocket; // from <boost/beast/websocket.hpp>
+namespace net = boost::asio;            // from <boost/asio.hpp>
+
+
+/// Endpoint for a connected control client.
+/**
+ * Endpoint for a connected control client.
+ * Messages are sent to the client with the "send" method.
+ * Received messages from the client are passed to the ControlMessageReceiver callback
+ */
+class StreamSessionWebsocket : public StreamSession
+{
+public:
+    /// ctor. Received message from the client are passed to MessageReceiver
+    StreamSessionWebsocket(boost::asio::io_context& ioc, MessageReceiver* receiver, websocket::stream<beast::tcp_stream>&& socket);
+    ~StreamSessionWebsocket() override;
+    void start() override;
+    void stop() override;
+    std::string getIP() override;
+
+protected:
+    // Websocket methods
+    void sendAsync(const shared_const_buffer& buffer, const WriteHandler& handler) override;
+    void on_read_ws(beast::error_code ec, std::size_t bytes_transferred);
+    void do_read_ws();
+
+    websocket::stream<beast::tcp_stream> ws_;
+
+protected:
+    beast::flat_buffer buffer_;
+};
+
+
+
+#endif