Source: kextsocklookup.h

# Source: kextsocklookup.h |
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    /*
     *  This file is part of the KDE libraries
     *  Copyright (C) 2001 Thiago Macieira
     *
     *  This library is free software; you can redistribute it and/or
     *  modify it under the terms of the GNU Library General Public
     *  License as published by the Free Software Foundation; either
     *  version 2 of the License, or (at your option) any later version.
     *
     *  This library is distributed in the hope that it will be useful,
     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     *  Library General Public License for more details.
     *
     *  You should have received a copy of the GNU Library General Public License
     *  along with this library; see the file COPYING.LIB.  If not, write to
     *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     *  Boston, MA 02111-1307, USA.
     */

    #ifndef KEXTSOCKLOOKUP_H
    #define KEXTSOCKLOOKUP_H

    /**
     * @internal
     * What is this class for?
     *
     * Instead of writing the whole lookup code in
     * KExtendedSocket, I preferred writing a separate
     * class to do the dirty work.
     *
     * @author Thiago Macieira
     * @short internal lookup class used by @ref KExtendedSocket
     */
    class KExtendedSocketLookup: public QObject
    {
      Q_OBJECT
    public:
      QDns dnsIpv4, dnsIpv6;
      int workingCount;		// number of QDns at work
      const QString& servname;
      addrinfo hint;

      KExtendedSocketLookup(const QString& hostname, const QString& servname, const addrinfo& hint) :
        dnsIpv4(hostname, QDns::A), dnsIpv6(hostname, QDns::Aaaa), workingCount(2),
        servname(servname), hint(hint)
      {
        connect(&dnsIpv4, SIGNAL(resultsReady()), this, SLOT(slotResultsReady()));
        connect(&dnsIpv6, SIGNAL(resultsReady()), this, SLOT(slotResultsReady()));
      }

      inline bool isWorking() const
      { return workingCount; }

      kde_addrinfo *results();
      static void freeresults(kde_addrinfo* res);

    public slots:
      void slotResultsReady()
      {
        if (--workingCount == 0)
          emit resultsReady();
      }

    signals:
      void resultsReady();

    public:
      friend class KExtendedSocket;
    };

    #endif

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