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  4. [Solved] QTcpServer.listen() always returns false
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[Solved] QTcpServer.listen() always returns false

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

    Hi all,

    I'm working on a project about a basic TCP connection. At present, I'm developing the server. The constructor code is as follows:

    @Server::Server(QObject* parent): QObject(parent)
    {
    connect(&server, SIGNAL(newConnection()), this, SLOT(acceptConnection()));

    if (!server.listen(QHostAddress::Any, 888))
    qDebug("Server could not start");
    

    }@

    The problem is that the listen function is always returning false..
    What can be the issue please?

    Newbie, I'm working on Fedora16 in Virtual Machine
    QtCreator 2.3.1
    Qt4.8.1

    Thks

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    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi and welcome to devnet,

      You are trying to use a system reserved port number, that's why it fails. You should use something over 1023 for your application, or let QTcpServer get one port automatically.

      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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      • ? Offline
        ? Offline
        A Former User
        wrote on last edited by
        #3

        Yes that's it! Thanks a lot

        1 Reply Last reply
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