// // UDPDaemon - an example console application that utilizes the WSJT-X // messaging facility // // This application is only provided as a simple console application // example to demonstrate the WSJT-X messaging facility. It allows // the user to set the server details either as a unicast UDP server // or, if a multicast group address is provided, as a multicast // server. The benefit of the multicast server is that multiple // servers can be active at once each receiving all WSJT-X broadcast // messages and each able to respond to individual WSJT_X clients. To // utilize the multicast group features each WSJT-X client must set // the same multicast group address as the UDP server address for // example 239.255.0.0 for a site local multicast group. // // #include #include #include #include #include #include #include #include #include "MessageServer.hpp" #include "Radio.hpp" #include "qt_helpers.hpp" using port_type = MessageServer::port_type; using Frequency = MessageServer::Frequency; class Client : public QObject { Q_OBJECT public: explicit Client (QString const& id, QObject * parent = nullptr) : QObject {parent} , id_ {id} , dial_frequency_ {0u} { } Q_SLOT void update_status (QString const& id, Frequency f, QString const& /*mode*/, QString const& /*dx_call*/ , QString const& /*report*/, QString const& /*tx_mode*/, bool /*tx_enabled*/ , bool /*transmitting*/, bool /*decoding*/, qint32 /*rx_df*/, qint32 /*tx_df*/ , QString const& /*de_call*/, QString const& /*de_grid*/, QString const& /*dx_grid*/, bool /* watchdog_timeout */) { if (id == id_) { if (f != dial_frequency_) { std::cout << tr ("%1: Dial frequency changed to %2").arg (id_).arg (f).toStdString () << std::endl; dial_frequency_ = f; } } } Q_SLOT void decode_added (bool is_new, QString const& client_id, QTime time, qint32 snr , float delta_time, quint32 delta_frequency, QString const& mode , QString const& message) { if (client_id == id_) { qDebug () << "new:" << is_new << "t:" << time << "snr:" << snr << "Dt:" << delta_time << "Df:" << delta_frequency << "mode:" << mode; std::cout << tr ("%1: Decoded %2").arg (id_).arg (message).toStdString () << std::endl; } } Q_SLOT void beacon_spot_added (bool is_new, QString const& client_id, QTime time, qint32 snr , float delta_time, Frequency delta_frequency, qint32 drift, QString const& callsign , QString const& grid, qint32 power) { if (client_id == id_) { qDebug () << "new:" << is_new << "t:" << time << "snr:" << snr << "Dt:" << delta_time << "Df:" << delta_frequency << "drift:" << drift; std::cout << tr ("%1: WSPR decode %2 grid %3 power: %4").arg (id_).arg (callsign).arg (grid).arg (power).toStdString () << std::endl; } } private: QString id_; Frequency dial_frequency_; }; class Server : public QObject { Q_OBJECT public: Server (port_type port, QHostAddress const& multicast_group) : server_ {new MessageServer {this}} { // connect up server connect (server_, &MessageServer::error, [this] (QString const& message) { std::cerr << tr ("Network Error: %1").arg ( message).toStdString () << std::endl; }); connect (server_, &MessageServer::client_opened, this, &Server::add_client); connect (server_, &MessageServer::client_closed, this, &Server::remove_client); server_->start (port, multicast_group); } private: void add_client (QString const& id) { auto client = new Client {id}; connect (server_, &MessageServer::status_update, client, &Client::update_status); connect (server_, &MessageServer::decode, client, &Client::decode_added); connect (server_, &MessageServer::WSPR_decode, client, &Client::beacon_spot_added); clients_[id] = client; server_->replay (id); std::cout << "Discovered WSJT-X instance: " << id.toStdString () << std::endl; } void remove_client (QString const& id) { auto iter = clients_.find (id); if (iter != std::end (clients_)) { clients_.erase (iter); (*iter)->deleteLater (); } std::cout << "Removed WSJT-X instance: " << id.toStdString () << std::endl; } MessageServer * server_; // maps client id to clients QHash clients_; }; #include "UDPDaemon.moc" int main (int argc, char * argv[]) { QCoreApplication app {argc, argv}; try { setlocale (LC_NUMERIC, "C"); // ensure number forms are in // consistent format, do this after // instantiating QApplication so // that GUI has correct l18n app.setApplicationName ("WSJT-X UDP Message Server Daemon"); app.setApplicationVersion ("1.0"); QCommandLineParser parser; parser.setApplicationDescription ("\nWSJT-X UDP Message Server Daemon."); auto help_option = parser.addHelpOption (); auto version_option = parser.addVersionOption (); QCommandLineOption port_option (QStringList {"p", "port"}, app.translate ("UDPDaemon", "Where is the UDP service port number to listen on.\n" "The default service port is 2237."), app.translate ("UDPDaemon", "PORT"), "2237"); parser.addOption (port_option); QCommandLineOption multicast_addr_option (QStringList {"g", "multicast-group"}, app.translate ("UDPDaemon", "Where is the multicast group to join.\n" "The default is a unicast server listening on all interfaces."), app.translate ("UDPDaemon", "GROUP")); parser.addOption (multicast_addr_option); parser.process (app); Server server {static_cast (parser.value (port_option).toUInt ()), QHostAddress {parser.value (multicast_addr_option)}}; return app.exec (); } catch (std::exception const & e) { std::cerr << "Error: " << e.what () << '\n'; } catch (...) { std::cerr << "Unexpected error\n"; } return -1; }