/* -*- compile-command: "make MEMDEBUG=TRUE -j3"; -*- */
/* 
 * Copyright 2013 by Eric House (xwords@eehouse.org).  All rights reserved.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _UDPACK_H_
#define _UDPACK_H_

#include "xwrelay_priv.h"
#include "xwrelay.h"

class AckRecord {
 public: 
    AckRecord() { m_createTime = time( NULL ); }
    time_t m_createTime;
};

class UDPAckTrack {
 public:
    static uint32_t nextPacketID( XWRelayReg cmd );
    static void recordAck( uint32_t packetID ); 
    static bool shouldAck( XWRelayReg cmd );

 private:
    static UDPAckTrack* get();
    static void* thread_main( void* arg );
    UDPAckTrack();
    uint32_t nextPacketIDImpl();
    void recordAckImpl( uint32_t packetID ); 
    void* threadProc();

    static UDPAckTrack* s_self;
    uint32_t m_nextID;
    pthread_mutex_t m_mutex;
    map<uint32_t, AckRecord> m_pendings;
};

#endif