Client/server application

[sali555]

yes I know how send/recieve data, but I dont know how find right socket.

server.cpp

void MainWindow::startServer()
{
  server = new QTcpServer(this);
  QObject::connect(server, SIGNAL(newConnection()),this, SLOT(acceptConnection()));
  server->listen();
}
 
void MainWindow::acceptConnection()
{
  QTcpSocket* socket = server->nextPendingConnection();
  connect(socket, SIGNAL(readyRead()), SLOT(startRead()));
}
 
// IN THIS FUNCTION I HAVE PROBLEM!!!!
void MainWindow::startRead()
{
    QTcpSocket* socket = qobject_cast<QTcpSocket*>(this->sender());
    QByteArray rawdata = socket->readAll();
 
    if(rawdata == "FINISHREADY")
    {
      // PROBLEM
      // the first parameter in this function must be a socket from which comes message 
      // STARTREADY
      // and I dont know how find right socket
 
      zapsat(start, "READY");
    }
}
 
//write data to socket
void MainWindow::writeData(QTcpSocket* socket, QByteArray data)
{
        socket->write(data);
        socket->flush();
}

void MainWindow::startServer()
{
  server = new QTcpServer(this);
  QObject::connect(server, SIGNAL(newConnection()),this, SLOT(acceptConnection()));
  server->listen();
}

void MainWindow::acceptConnection()
{
  QTcpSocket* socket = server->nextPendingConnection();
  connect(socket, SIGNAL(readyRead()), SLOT(startRead()));
}

// IN THIS FUNCTION I HAVE PROBLEM!!!!
void MainWindow::startRead()
{
    QTcpSocket* socket = qobject_cast<QTcpSocket*>(this->sender());
    QByteArray rawdata = socket->readAll();

    if(rawdata == "FINISHREADY")
    {
      // PROBLEM
      // the first parameter in this function must be a socket from which comes message 
      // STARTREADY
      // and I dont know how find right socket
      
      zapsat(start, "READY");
    }
}

//write data to socket
void MainWindow::writeData(QTcpSocket* socket, QByteArray data)
{
        socket->write(data);
        socket->flush();
}

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[squidge]

So you need to store the socket pointer when you accept the connection. Where you store it is up to you.

[sali555]

yes this is it, but i dont khow how to do. How to store socket pointer? I didnt find any method.

[squidge]

Your already storing it in local scope (QTcpSocket* socket), what you need to do is store it in a more global scope, such as in your class. Just assign, eg. clientSock = socket;