Ok, I'm trying this way:

Qt Code: 
  1. QString myHost("www.google.com");
  2. 	int myPort = 80;
  3.  
  4. 	//this function establishes connection and returns immediately
  5. 	m_pSocket->connectToHost(myHost, myPort);
  6. 	connect(m_pSocket, SIGNAL(connected()), this, SLOT(connectedSlot()));
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Qt Code: 
  1. void 	CMainWindow::connectedSlot() {
  2. 	QString input = "GET /index.php HTTP/1.1\n\n";
  3. 	if(m_pSocket->state() == QAbstractSocket::ConnectedState) {
  4. 		QTextStream stream(m_pSocket);
  5. 		stream << input;
  6. 	}
  7.  
  8. 	QString text;
  9. 	while(m_pSocket->canReadLine()) {
  10. 		text += m_pSocket->readLine();
  11. 	}
  12.  
  13. 	QTextStream output(stdout);
  14. 	QString enteredCommand = text;
  15. 	output >> text;
  16. }
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I'm calling this slot when the connecter() signal occurs, still does not work!