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QHostInfo::lookup & QHostInfo::HostNotFound

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  • ? Offline
    ? Offline
    A Former User
    wrote on last edited by
    #1

    Hi, can we find out if a machine is live using QHostInfo? (I want to ping somehow ICMP request requires raw tcp and root privileges I guess) QHostInfo::lookUp and QHostInfo::HostNotFound don't work for me How can I do this for Android ios

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    • ? Offline
      ? Offline
      A Former User
      wrote on last edited by
      #2
              QHostInfo hi = QHostInfo::fromName("192.168.1.44");
              if(hi.error() == hi.NoError) {
                  qDebug() << "OK";
              }
              if(hi.error() == hi.HostNotFound) {
                  qDebug() << "Host not found";
              }
      

      Isn't work for me

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #3

        Hi,

        The most usual way to do that is to run the ping command using QProcess.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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