How block/cancel specific IP adress

[gfxx]

I have a QtTcpServer and more than one client .... I know the right ip adress to accept and would block or non accept other .... so I try in these way on my server side:

/* in mainwindows */

connect(server, SIGNAL(newConnection()), this, SLOT(new_con()));

/* after */



void MainWindow::new_con()
{


    client = new QTcpSocket();

    client = server->nextPendingConnection();
    qDebug() << "connesso nuovo client...." << client->peerAddress().toString();
    QString conClient = client->peerAddress().toString();


    if(conClient == peerF){  connect(client, &QTcpSocket::readyRead, this, &MainWindow::readSocket); qDebug() << "client F..." ;}
    if(conClient == peerBR){  connect(client, &QTcpSocket::readyRead, this, &MainWindow::readSocket1); qDebug() << "client BR...." ;}
    if(conClient == peerB){  connect(client, &QTcpSocket::readyRead, this, &MainWindow::readSocket2); qDebug() << "client B...." ;}

    if((conClient == peerF) || (conClient == peerBR) || (conClient == peerB)){
        connect(client, &QTcpSocket::disconnected,this, &MainWindow::discardSocket);
        connect(client, &QTcpSocket::errorOccurred, this, &MainWindow::sokError);
        connect(client, &QTcpSocket::connected, this, &MainWindow::sokConnSTATE);
        connect(client, &QTcpSocket::disconnected, this, &MainWindow::sokDiscSTATE);
        connect(client, &QTcpSocket::stateChanged, this, &MainWindow::sokState);
        client->setSocketOption(QAbstractSocket:: KeepAliveOption, 1);
    }
    else{client->deleteLater(); qDebug() << "discharge socket";}
    
    
    /*....... other stuff */
}

Any How when unappropriate ip adress try to connect my app crash .... appreciate any suggest for reach my goal.

regards

[Christian Ehrlicher]

@gfxx said in How block/cancel specific IP adress:

client = new QTcpSocket();

client = server->nextPendingConnection();

Hello memleak...

Any How when unappropriate ip adress try to connect my app crash

Then use a debugger to find out where it crashes, your code above does not create a crash, just a memleak as shown above.

[gfxx]

@Christian-Ehrlicher ok understand .... but my code is ok for close connection when non desired IP adress try to connect? These is a right manner?

Need di dischard/disconnect every undesired ip adress ....

 /*peerF, peerBR, peerB was QString with ip adress needed*/
  QString conClient = client->peerAddress().toString();

    if((conClient == peerF) || (conClient == peerBR) || (conClient == peerB)){
          /* .... other code. ... */
    }
    else{client->deleteLater(); qDebug() << "discharge socket";}

About memory leak :

/*client = new QTcpSocket();*/

client = server->nextPendingConnection();

these can be?

[Christian Ehrlicher]

@gfxx said in How block/cancel specific IP adress:

but my code is ok for close connection when non desired IP adress try to connect?

Yes

these can be?

correct

[gfxx]

@Christian-Ehrlicher Real Thanks ... and happy sunday.