/***************************************************************************
 *   Copyright (C) 2005 by Joris Guisson                                   *
 *   joris.guisson@gmail.com                                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.             *
 ***************************************************************************/
#ifndef DHTRPCSERVER_H
#define DHTRPCSERVER_H

#include <QList>
#include <QObject>
#include <dht/rpcserverinterface.h>
#include <net/address.h>
#include <net/socket.h>
#include <util/constants.h>
#include <util/ptrmap.h>

using bt::Uint32;
using bt::Uint16;
using bt::Uint8;

namespace dht
{
class Key;
class DHT;

/**
 * @author Joris Guisson
 *
 * Class to handle incoming and outgoing RPC messages.
 */
class RPCServer : public QObject, public RPCServerInterface
{
    Q_OBJECT
public:
    RPCServer(DHT* dh_table, Uint16 port, QObject *parent = 0);
    ~RPCServer() override;

    /// Start the server
    void start();

    /// Stop the server
    void stop();

    /**
     * Do a RPC call.
     * @param msg The message to send
     * @return The call object
     */
    RPCCall* doCall(RPCMsg::Ptr msg) override;

    /**
     * Send a message, this only sends the message, it does not keep any call
     * information. This should be used for replies.
     * @param msg The message to send
     */
    void sendMsg(RPCMsg::Ptr msg);

    /**
     * Send a message, this only sends the message, it does not keep any call
     * information. This should be used for replies.
     * @param msg The message to send
     */
    void sendMsg(const RPCMsg & msg);

    /**
     * Ping a node, we don't care about the MTID.
     * @param addr The address
     */
    void ping(const dht::Key & our_id, const net::Address & addr);

    /// Get the number of active calls
    Uint32 getNumActiveRPCCalls() const;

private Q_SLOTS:
    void callTimeout(RPCCall* call);

private:
    class Private;
    Private* d;
};

}

#endif
