/usr/include/ns3.26/ns3/tcp-htcp.h is in libns3-dev 3.26+dfsg-1.
This file is owned by root:root, with mode 0o644.
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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 99 100 101 102 103 104 105 106 107 108 109 110 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* 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
*
* by: Amir Modarresi <amodarresi@ittc.ku.edu>
*
* James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
* ResiliNets Research Group http://wiki.ittc.ku.edu/resilinets
* Information and Telecommunication Technology Center (ITTC)
* and Department of Electrical Engineering and Computer Science
* The University of Kansas Lawrence, KS USA.
*/
#ifndef TCP_HTCP_H
#define TCP_HTCP_H
#include "ns3/tcp-congestion-ops.h"
#include "ns3/traced-value.h"
#include "ns3/sequence-number.h"
namespace ns3 {
/**
* \ingroup socket
* \ingroup tcp
*
* \brief An implementation of the H-TCP variant of TCP.
*
* This class contains the H-TCP implementation of TCP, according to
* Internet-Draft draft-leith-tcp-htcp-03 and its related paper,
* "H-TCP: TCP for high-speed and long-distance networks"
* H-TCP is a congestion control protocol suitable for high bandwidth-delay
* product networks. It is fair to similar flows present in the network and
* also friendly with conventional TCP. It also makes use of free
* bandwidth when it is available.
*/
class TcpHtcp : public TcpNewReno
{
public:
/**
* \brief Get the type ID.
* \return the object TypeId
*/
static TypeId GetTypeId (void);
/**
* Create an unbound tcp socket.
*/
TcpHtcp (void);
/**
* \brief Copy constructor
* \param sock the object to copy
*/
TcpHtcp (const TcpHtcp& sock);
virtual ~TcpHtcp (void);
virtual std::string GetName () const;
virtual Ptr<TcpCongestionOps> Fork ();
virtual uint32_t GetSsThresh (Ptr<const TcpSocketState> tcb,
uint32_t bytesInFlight);
virtual void PktsAcked (Ptr<TcpSocketState> tcb, uint32_t segmentsAcked,
const Time &rtt);
protected:
virtual void CongestionAvoidance (Ptr<TcpSocketState> tcb,
uint32_t segmentsAcked);
private:
/**
* \brief Updates the additive increase parameter for H-TCP
*/
void UpdateAlpha (void);
/**
* \brief Updates the multiplicative decrease factor beta for H-TCP
*/
void UpdateBeta (void);
// h-tcp variables
double m_alpha; //!< AIMD additive increase parameter
double m_beta; //!< AIMD multiplicative decrease factor
double m_defaultBackoff; //!< default value when throughput ratio less than default
double m_throughputRatio; //!< ratio of two consequence throughput
Time m_delta; //!< Time in second that has elapsed since the
//last congestion event experienced by a flow
Time m_deltaL; //!< Threshold for switching between standard and new increase function
Time m_lastCon; //!< Time of the last congestion for the flow
Time m_minRtt; //!< Minimum RTT in each congestion period
Time m_maxRtt; //!< Maximum RTT in each congestion period
uint32_t m_throughput; //!< Current throughput since last congestion
uint32_t m_lastThroughput; //!< Throughput in last congestion period
uint32_t m_dataSent; //!< Current amount of data sent since last congestion
};
} // namespace ns3
#endif /* TCP_HTCP_H */
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