IXWebSocket/ws/ws_echo_server.cpp

/*
 *  ws_broadcast_server.cpp
 *  Author: Benjamin Sergeant
 *  Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
 */

#include <iostream>
#include <sstream>
#include <ixwebsocket/IXWebSocketServer.h>

namespace ix
{
    int ws_echo_server_main(int port, bool greetings, const std::string& hostname)
    {
        std::cout << "Listening on " << hostname << ":" << port << std::endl;

        ix::WebSocketServer server(port, hostname);

        server.setOnConnectionCallback(
            [greetings](std::shared_ptr<ix::WebSocket> webSocket,
                        std::shared_ptr<ConnectionState> connectionState)
            {
                webSocket->setOnMessageCallback(
                    [webSocket, connectionState, greetings](const WebSocketMessagePtr& msg)
                    {
                        if (msg->type == ix::WebSocketMessageType::Open)
                        {
                            std::cerr << "New connection" << std::endl;
                            std::cerr << "id: " << connectionState->getId() << std::endl;
                            std::cerr << "Uri: " << msg->openInfo.uri << std::endl;
                            std::cerr << "Headers:" << std::endl;
                            for (auto it : msg->openInfo.headers)
                            {
                                std::cerr << it.first << ": " << it.second << std::endl;
                            }

                            if (greetings)
                            {
                                webSocket->sendText("Welcome !");
                            }
                        }
                        else if (msg->type == ix::WebSocketMessageType::Close)
                        {
                            std::cerr << "Closed connection"
                                      << " code " << msg->closeInfo.code
                                      << " reason " << msg->closeInfo.reason << std::endl;
                        }
                        else if (msg->type == ix::WebSocketMessageType::Error)
                        {
                            std::stringstream ss;
                            ss << "Connection error: " << msg->errorInfo.reason      << std::endl;
                            ss << "#retries: "         << msg->errorInfo.retries     << std::endl;
                            ss << "Wait time(ms): "    << msg->errorInfo.wait_time   << std::endl;
                            ss << "HTTP Status: "      << msg->errorInfo.http_status << std::endl;
                            std::cerr << ss.str();
                        }
                        else if (msg->type == ix::WebSocketMessageType::Message)
                        {
                            std::cerr << "Received "
                                      << msg->wireSize << " bytes"
                                      << std::endl;
                            webSocket->send(msg->str, msg->binary);
                        }
                    }
                );
            }
        );

        auto res = server.listen();
        if (!res.first)
        {
            std::cerr << res.second << std::endl;
            return 1;
        }

        server.start();
        server.wait();

        return 0;
    }
}