Get the ping from a remote target with Qt (Windows/Linux)

Question

Currently I use this code for retrieving the ping of a target system. However it works so far only under linux and it is likely dependent on the locale settings. To add suppor

Answer 1

The ping method return a 0 exit code event if the target is unreachable in Windows. You have to parse the command output. The following example is working on Windows and linux :

class MyClass {
  private slots:
   void OnPing();
   void OnPingEnded();
  private:
   Process mPingProcess;
};

void MyClass::OnPing()
{
   connect(&mPingProcess, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(OnPingEnded()));
#ifdef __linux__
   mPingProcess.start("ping", QStringList() << "-c" << "1" << ui->ip->text());
#else
   mPingProcess.start("ping", QStringList() << "-n" << "1" << ui->ip->text());
#endif
}

void MyClass::OnPingEnded()
{
    QByteArray output = mPingProcess.readAllStandardOutput();
    if (!output.isEmpty())
    {
        qDebug() << output;
        if (-1 != QString(output).indexOf("ttl", 0, Qt::CaseInsensitive))
        {
           qDebug() << "PING OK";
        }
        else
        {
           qDebug() << "PING KO";
        }
    }
}