tcp-tx-item.h

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/*
 * Copyright (c) 2018 Natale Patriciello <natale.patriciello@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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 TCP_TX_ITEM_H
#define TCP_TX_ITEM_H
 
#include "ns3/nstime.h"
#include "ns3/packet.h"
#include "ns3/sequence-number.h"
 
namespace ns3
{
class TcpTxItem
{
  public:
    // Default constructor, copy-constructor, destructor
 
    void Print(std::ostream& os, Time::Unit unit = Time::S) const;
 
    uint32_t GetSeqSize() const;
 
    bool IsSacked() const;
 
    bool IsRetrans() const;
 
    Ptr<Packet> GetPacketCopy() const;
 
    Ptr<const Packet> GetPacket() const;
 
    const Time& GetLastSent() const;
 
    struct RateInformation
    {
        uint64_t m_delivered{0}; 
        Time m_deliveredTime{
            Time::Max()}; 
        Time m_firstSent{
            Time::Max()}; 
        bool m_isAppLimited{false}; 
    };
 
    RateInformation& GetRateInformation();
 
    bool m_retrans{false}; 
 
  private:
    // Only TcpTxBuffer is allowed to touch this part of the TcpTxItem, to manage
    // its internal lists and counters
    friend class TcpTxBuffer;
 
    SequenceNumber32 m_startSeq{0}; 
    Ptr<Packet> m_packet{nullptr};  
    bool m_lost{false};             
    Time m_lastSent{
        Time::Max()};     
    bool m_sacked{false}; 
 
    RateInformation m_rateInfo; 
};
 
} // namespace ns3
 
#endif /* TCP_TX_ITEM_H */