QRPC examples

Below are some examples of how you can use QRPC. It is a simple example of a server that returns a QString with a fortune cookie saying.

• Interface
• Server
• Client

Interface

Define the interface...

    interface Fortune
    {
        method fortune() const returns QString;
    }
      

Server

Add the idl file to your project. The code generator will generate all network communication code and an abstract interface to be implemented by a server object.

    QRPC_SERVER_FILES = ../fortune.qrpcidl
      

Implement the interface...

    #include "fortune.h"
    #include <QStringList>

    class FortuneImpl : public Fortune
    {
    public:

        explicit FortuneImpl( QObject* parent = 0 );
        ~FortuneImpl();
        virtual QString fortune() const;
    private:
        QStringList mFortunes;
    };
      

Create server objects...

    class Factory : public QRPC::ServerObjectFactory
    {
    public:
        QRPC::ServerObject* createServer( const QString& name, QObject* parent=0 )
        {
            if ( name == "Fortune" )
                return new FortuneImpl( parent );
            return 0;
        }
    };

    int main( int argc, char** argv )
    {
        QCoreApplication app( argc, argv );

        // Register the FortuneImpl factory with the ServerObjectFactory
        (new Factory)->registerFactory();
        // Start a QRPC server
        QRPC::OrbServer server;
        server.listen( QHostAddress::LocalHost, 11111 );

        return app.exec();
    }
      

Client

Add the idl file to your project. The code generator will generate all network communication code and a class to represent a server object.

    QRPC_CLIENT_FILES = ../fortune.qrpcidl
          

Communicate with the server...

    int main( int argc, char** argv )
    {
        QCoreApplication app(argc, argv);
        // Make the server object and connect to the server
        try
        {
            Fortune server;
            server.connectToServer( "localhost", 11111 );
            while (true)
            {
                // Ask for a fortune
                qDebug( "Fortune: %s", qPrintable( server.fortune() ) );
   #ifdef Q_WS_WIN
                Sleep(1000);
   #else
                sleep(1);
   #endif
            }
        }
        catch ( TC::Exception& e )
        {
            qDebug( "Exception caught: %s", qPrintable( e.message() ) );
            return 1;
        }

        return 0;
    }