[Bug 230814] New: [KDE4] Improve CUPS detection in KCupsOptionsWidget

[Stefan Kiesler]

https://bugs.kde.org/show_bug.cgi?id=230814

           Summary: [KDE4] Improve CUPS detection in KCupsOptionsWidget
           Product: kde
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: heavymetal at gmx.de


Version:            (using KDE 4.3.5)
Compiler:          gcc 4.3.4 
OS:                Linux
Installed from:    Gentoo Packages

Important options are missing from the KDE4 print dialog when using a remote
CUPS server instead of a local printer.
KCupsOptionsWidget::cupsAvailable() only checks for a running socket on
localhost:631, instead it should respect the client CUPS configuration and poll
the configured server (localhost or remote).

Here's the current (as of KDE 4.3.5) snippet of cupsAvailable() in
/kdeui/dialogs/kcupsoptionswidget_p.cpp:

bool KCupsOptionsWidget::cupsAvailable() 
{ 
    // Ideally we would have access to the private Qt method 
    // QCUPSSupport::cupsAvailable() to do this as it is very complex routine, 
    // instead just take the simplest case of if we can connect to port 631 
    // then assume CUPS must be running and used by Qt. 
    QTcpSocket qsock; 
    qsock.connectToHost("localhost", 631); 
    bool rtn = qsock.waitForConnected() && qsock.isValid(); 
    qsock.abort(); 
    return rtn; 
}

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