/usr/include/ns3.27/ns3/tcp-option-sack.h is in libns3-dev 3.27+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2011 Adrian Sai-wah Tam
* Copyright (c) 2015 ResiliNets, ITTC, University of Kansas
*
* 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
*
* Original Author: Adrian Sai-wah Tam <adrian.sw.tam@gmail.com>
* Documentation, test cases: Truc Anh N. Nguyen <annguyen@ittc.ku.edu>
* ResiliNets Research Group http://wiki.ittc.ku.edu/resilinets
* The University of Kansas
* James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
*/
#ifndef TCP_OPTION_SACK_H
#define TCP_OPTION_SACK_H
#include "ns3/tcp-option.h"
#include "ns3/sequence-number.h"
namespace ns3 {
/**
* \brief Defines the TCP option of kind 5 (selective acknowledgment option) as
* in \RFC{2018}
*
* TCP SACK Option is used by a receiver to report non-contiguous blocks of data
* that have been received and queued in the receiving buffer. Using the
* information conveyed in SACK option sender retransmits only the segments that
* have actually been lost, allowing the recovery of multiple packet losses per
* sending window.
*
* Each SACK block is defined by two 32-bit unsigned integers specifying the
* left and the right edge of the block. It means that with the 40-byte TCP
* option limitation in addition to the presence of TCP Timestamp Option, the
* maximum number of SACK blocks that can be appended to each segment is 3.
*/
class TcpOptionSack : public TcpOption
{
public:
/**
* \brief Get the type ID.
* \return the object TypeId
*/
static TypeId GetTypeId (void);
virtual TypeId GetInstanceTypeId (void) const;
typedef std::pair<SequenceNumber32, SequenceNumber32> SackBlock; //!< SACK block definition
typedef std::list<SackBlock> SackList; //!< SACK list definition
TcpOptionSack ();
virtual ~TcpOptionSack ();
virtual void Print (std::ostream &os) const;
virtual void Serialize (Buffer::Iterator start) const;
virtual uint32_t Deserialize (Buffer::Iterator start);
virtual uint8_t GetKind (void) const;
virtual uint32_t GetSerializedSize (void) const;
/**
* \brief Add a SACK block
* \param s the SACK block to be added
*/
void AddSackBlock (SackBlock s);
/**
* \brief Count the total number of SACK blocks
* \return the total number of SACK blocks
*/
uint32_t GetNumSackBlocks (void) const;
/**
* \brief Clear the SACK list
*/
void ClearSackList (void);
/**
* \brief Get the SACK list
* \return the SACK list
*/
SackList GetSackList (void) const;
protected:
SackList m_sackList; //!< the list of SACK blocks
};
} // namespace ns3
#endif /* TCP_OPTION_SACK */
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