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    Problem with QTcpSocket version Qt 5.1.0

    General and Desktop
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    • A
      aymen090 last edited by

      Hi everybody,

      I have started a QTcpServer for listening like this
      server->listen(QHostAddress::Any,53210)
      and it has start listening correctly
      but, when I connect with Qtcpsocket from another IP (not local)
      with this code
      socket->connectToHost("IP_REMOTE",53210)
      An error has appear (socket Timeout).

      Another information to help, when I connecti with 3G modem (don't use NAT), connection has been establish well.

      Any help?

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      • M
        mcosta last edited by

        What is the value of IP_REMOTE??

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        • A
          aymen090 last edited by

          the public IP of the correspondant for exemple 41.xxx.xx.xx
          I found that the correspond when he open the port (Port forwarding) 53210, the connection it will establish.
          Do you knew how Can I open the port automatically.

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          • A
            aymen090 last edited by

            No one have solution?

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            • SGaist
              SGaist Lifetime Qt Champion last edited by

              Hi,

              You can't open ports like that. It's in the domain of network setup (i.e. firewall modification etc...)

              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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              • A
                aymen090 last edited by

                Are there another solution? Like skype or programs peer to peer, how these programs work?

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