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/*
    Copyright (C) 2006-2007 KovoKs <info@kovoks.nl>

    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., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
*/

#ifndef MAILTRANSPORT_SOCKET_H
#define MAILTRANSPORT_SOCKET_H

#include <mailtransport/mailtransport_export.h>

#include <QtNetwork/QSslSocket>

namespace MailTransport
{
  class SocketPrivate;

  /**
   * @class Socket
   * Responsible for communicating with the server, it's designed to work
   * with the ServerTest class.
   * @author Tom Albers <tomalbers@kde.nl>
   */
  class MAILTRANSPORT_EXPORT Socket : public QObject
  {
      Q_OBJECT

    public:

      /**
       * Contructor, it will not auto connect. Call reconnect() to connect to
       * the parameters given.
       * @param parent the parent
       */
      explicit Socket( QObject *parent );

      /**
      * Destructor
      */
      ~Socket();

      /**
       * Existing connection will be closed and a new connection will be
       * made
       */
      virtual void reconnect();

      /**
       * Write @p text to the socket
       */
      virtual void write( const QString &text );

      /**
       * @return true when the connection is live and kicking
       */
      virtual bool available();

      /**
       * set the protocol to use
       */
      void setProtocol( const QString &proto );

      /**
       * set the server to use
       */
      void setServer( const QString &server );

      /**
       * set the port to use. If not specified, it will use the default
       * belonging to the protocol.
       */
      void setPort( int port );

      /**
       * this will be a secure connection
       */
      void setSecure( bool what );

      /**
       * If you want to start TLS encryption, call this. For example after the starttls command.
       */
      void startTLS();

    private:
      Q_DECLARE_PRIVATE( Socket )
      SocketPrivate *const d;

      Q_PRIVATE_SLOT( d, void slotConnected() )
      Q_PRIVATE_SLOT( d, void slotStateChanged( QAbstractSocket::SocketState state ) )
      Q_PRIVATE_SLOT( d, void slotModeChanged( QSslSocket::SslMode  state ) )
      Q_PRIVATE_SLOT( d, void slotSocketRead() )
      Q_PRIVATE_SLOT( d, void slotSslErrors( const QList<QSslError> &errors ) )

    Q_SIGNALS:
      /**
       * emits the incoming data
       */
      void data( const QString & );

      /**
       * emitted when there is a connection (ready to send something).
       */
      void connected();

      /**
       * emitted when not connected.
       */
      void failed();

      /**
       * emitted when startShake() is completed.
       */
      void tlsDone();
  };
} // namespace MailTransport

#endif // MAILTRANSPORT_SOCKET_H