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QNetworkInterface get subnet mask

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  • mrdebugM Offline
    mrdebugM Offline
    mrdebug
    wrote on last edited by
    #1

    Hi. Is there a way to get the subnet mask?

    Need programmers to hire?
    www.labcsp.com
    www.denisgottardello.it
    GMT+1
    Skype: mrdebug

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    • A Offline
      A Offline
      andreyc
      wrote on last edited by
      #2

      "Get a list of the network interfaces":http://qt-project.org/doc/qt-5/qnetworkinterface.html#allInterfaces
      For each interface "get a list of the address entries":http://qt-project.org/doc/qt-5/qnetworkinterface.html#addressEntries
      For each entry "get netmask":http://qt-project.org/doc/qt-5/qnetworkaddressentry.html#netmask

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      • mrdebugM Offline
        mrdebugM Offline
        mrdebug
        wrote on last edited by
        #3

        Is there a way to get the valid ip from a list?
        For example I have this list:

        10.0.0.1 255.255.255.0
        192.168.0.1 255.255.255.0
        192.168.1.1 255.255.255.0

        from the remote server. My pc is
        192.168.0.111 255.255.255.0

        Is there a way to select the right ip? (in this case the second, 192.168.0.1)

        Need programmers to hire?
        www.labcsp.com
        www.denisgottardello.it
        GMT+1
        Skype: mrdebug

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        • A Offline
          A Offline
          andreyc
          wrote on last edited by
          #4

          if you know ip address and mask you can calculate first ip address in a network.
          For example
          @
          192.168.0.111 = 0xC0A8006F
          255.255.255.0 = 0xFFFFFF00
          0xC0A8006F & 0xFFFFFF00 = 0xC0A80000
          0xC0A80000 = 192.168.0.0
          @
          So first address of the network 192.168.0.0 is 192.168.0.1

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          • A Offline
            A Offline
            andreyc
            wrote on last edited by
            #5

            Another option is to calculate network addresses for all 3 entries in the list and for pc.
            Select the entry from the list that has the same network with pc.

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            • mrdebugM Offline
              mrdebugM Offline
              mrdebug
              wrote on last edited by
              #6

              Solved using your suggestion.
              I hoped to find an already made function.

              Need programmers to hire?
              www.labcsp.com
              www.denisgottardello.it
              GMT+1
              Skype: mrdebug

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