I'm confused then by the QT exaple in

http://doc.trolltech.com/4.4/network-http.html

I followed the QT example where they set the password in the slot connected to the QHttp signal authenticationRequired(). I copied the QT example slot function below.

Qt Code: 
  1. void HttpWindow::slotAuthenticationRequired(const QString &hostName, quint16, QAuthenticator *authenticator)
  2.  {
  3.      QDialog dlg;
  4.      Ui::Dialog ui;
  5.      ui.setupUi(&dlg);
  6.      dlg.adjustSize();
  7.      ui.siteDescription->setText(tr("%1 at %2").arg(authenticator->realm()).arg(hostName));
  8.  
  9.      if (dlg.exec() == QDialog::Accepted) {
  10.          authenticator->setUser(ui.userEdit->text());
  11.          authenticator->setPassword(ui.passwordEdit->text());
  12.      }
  13.  }
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When I looked at the example's header response handler below, it does not have any case for authentication required. So perhaps the example is incorrect? Should it have a case 401 Unauthorized? I understand what you are saying about handling the error manually, but I'd sure like to know how QT's example is supposed to work.

Qt Code: 
  1. void HttpWindow::readResponseHeader(const QHttpResponseHeader &responseHeader)
  2.  {
  3.      switch (responseHeader.statusCode()) {
  4.      case 200:                   // Ok
  5.      case 301:                   // Moved Permanently
  6.      case 302:                   // Found
  7.      case 303:                   // See Other
  8.      case 307:                   // Temporary Redirect
  9.          // these are not error conditions
  10.          break;
  11.  
  12.      default:
  13.          QMessageBox::information(this, tr("HTTP"),
  14.                                   tr("Download failed: %1.")
  15.                                   .arg(responseHeader.reasonPhrase()));
  16.          httpRequestAborted = true;
  17.          progressDialog->hide();
  18.          http->abort();
  19.      }
  20.  }
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