server.cpp

这是基于QT2.3.10的TCP服务器端程序

#include <qsocket.h>
#include <qserversocket.h>
#include <qapplication.h>
#include <qvbox.h>
#include <qtextview.h>
#include <qlabel.h>
#include <qpushbutton.h>
#include <qtextstream.h>
#include <stdlib.h>


class ClientSocket: public QSocket

{
   Q_OBJECT

public:
 
   ClientSocket( int sock, QObject *parent=0, const char *name=0 ):QSocket(parent, name)

{

  line = 0;

  connect(this, SIGNAL(readyRead()), SLOT(readClient()));

  connect(this, SIGNAL(connectionClosed()), SLOT(connectionClosed()));

  setSocket(sock);
}

~ClientSocket()
{
}

private slots:

   void readClient()

 {
    while(canReadLine()) {

    QTextStream os(this);

    os<<line<< ":test"<<readLine();

     line++;

   }
  }

void connectionClosed()
{
  delete this;
}

private:

   int line;

};

class SimpleServer:public QServerSocket

{

   Q_OBJECT

public:

   SimpleServer(QObject*parent=0):
 
   QServerSocket(4242, 1, parent)

   {

        if(!ok()) {

              qWarning("Failed to bind to port 4242");

              exit(1);
    }
 }

   ~SimpleServer()
    {
    }

void newConnection(int socket)
{

  (void)new ClientSocket(socket, this);

  emit newConnect();

}

signals:

   void newConnect();
};

class ServerInfo:public QVBox

{

   Q_OBJECT

public:

    ServerInfo()

     {

        SimpleServer *server = new SimpleServer(this);

        QString itext = QString(
                             "This is a small server example.\n"
                             "Connect with the client now."
                           );


     QLabel *lb = new QLabel(itext, this);

     lb->setAlignment(AlignHCenter);

     infoText = new QTextView(this);

     QPushButton *quit = new QPushButton("Quit", this);

     connect(server, SIGNAL(newConnect()), SLOT(newConnect()));

     connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));

}

 ~ServerInfo()
 {
 }

private slots:

     void newConnect()

      {
       
         infoText->append("New connection\n");

       }

private:

    QTextView *infoText;

};

int main(int argc, char **argv)

{

  QApplication app(argc, argv);

  ServerInfo info;

  app.setMainWidget(&info);

  info.show();

  return app.exec();

}

#include "server.moc"