Game Programming Using Qt Beginner's Guide

Time for action – reacting on a new pending connection

As soon as a client tries to connect to the server, the newConnection() slot will be called:

void TcpServer::newConnection() {
  while (m_server->hasPendingConnections()) {
    QTcpSocket *con = m_server->nextPendingConnection();
    m_clients << con;
    ui->disconnectClients->setEnabled(true);
    connect(con, SIGNAL(disconnected()), this, SLOT(removeConnection()));
    connect(con, SIGNAL(readyRead()), this, SLOT(newMessage()));
    ui->log->insertPlainText(
      QString("* New connection: %1, port %2\n")
      .arg(con->peerAddress().toString())
      .arg(QString::number(con->peerPort())));
  }
}

What just happened?

Since more than one connection may be pending, we use hasPendingConnections() to determine whether there is at least ...