Add websocket class

tools/websocket.cpp

@@ -0,0 +1,60 @@
+#include "websocket.hpp"
+
+
+Websocket::Websocket(uint16_t port, std::function<std::string(std::string)> on_message)
+    : p_on_message(on_message)
+{
+        try {
+        // Set logging settings
+        server.set_access_channels(websocketpp::log::alevel::all);
+        server.clear_access_channels(websocketpp::log::alevel::frame_payload);
+
+        // Initialize Asio
+        server.init_asio();
+
+        // Register our message handler
+        server.set_message_handler(bind(&Websocket::on_message, this, &server, ::_1, ::_2));
+
+        // Listen on port 9002
+        server.listen(port);
+    } catch (websocketpp::exception const & e) {
+        std::cout << e.what() << std::endl;
+    } catch (...) {
+        std::cout << "other exception" << std::endl;
+    }
+}
+
+void Websocket::run()
+{
+    try
+    {
+        // Start the server accept loop
+        server.start_accept();
+
+        // Start the ASIO io_service run loop
+        server.run();
+    } catch (websocketpp::exception const & e) {
+        std::cout << e.what() << std::endl;
+    } catch (...) {
+        std::cout << "other exception" << std::endl;
+    }
+}
+
+void Websocket::stop()
+{
+    server.stop_listening();
+    server.stop();
+}
+
+void Websocket::on_message(Server* s, websocketpp::connection_hdl hdl, Server::message_ptr msg) {
+    std::cout << "on_message called with hdl: " << hdl.lock().get()
+              << " and message: " << msg->get_payload()
+              << std::endl;
+    std::string response = p_on_message(msg->get_payload());
+    try {
+        s->send(hdl, response, msg->get_opcode());
+    } catch (websocketpp::exception const & e) {
+        std::cout << "Response failed because: "
+                  << "(" << e.what() << ")" << std::endl;
+    }
+}