A Discrete-Event Network Simulator
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2010 Adrian Sai-wah Tam
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Adrian Sai-wah Tam <adrian.sw.tam@gmail.com>
19  */
21 #ifndef TCP_NEWRENO_H
22 #define TCP_NEWRENO_H
24 #include "tcp-socket-base.h"
26 namespace ns3 {
36 class TcpNewReno : public TcpSocketBase
37 {
38 public:
43  static TypeId GetTypeId (void);
47  TcpNewReno (void);
52  TcpNewReno (const TcpNewReno& sock);
53  virtual ~TcpNewReno (void);
55  // From TcpSocketBase
56  virtual int Connect (const Address &address);
57  virtual int Listen (void);
59 protected:
60  virtual uint32_t Window (void); // Return the max possible number of unacked bytes
61  virtual Ptr<TcpSocketBase> Fork (void); // Call CopyObject<TcpNewReno> to clone me
62  virtual void NewAck (SequenceNumber32 const& seq); // Inc cwnd and call NewAck() of parent
63  virtual void DupAck (const TcpHeader& t, uint32_t count); // Halving cwnd and reset nextTxSequence
64  virtual void Retransmit (void); // Exit fast recovery upon retransmit timeout
66  // Implementing ns3::TcpSocket -- Attribute get/set
67  virtual void SetSegSize (uint32_t size);
68  virtual void SetSSThresh (uint32_t threshold);
69  virtual uint32_t GetSSThresh (void) const;
70  virtual void SetInitialCwnd (uint32_t cwnd);
71  virtual uint32_t GetInitialCwnd (void) const;
72 private:
76  void InitializeCwnd (void);
78 protected:
80  uint32_t m_ssThresh;
81  uint32_t m_initialCWnd;
83  uint32_t m_retxThresh;
84  bool m_inFastRec;
85  bool m_limitedTx;
86 };
88 } // namespace ns3
90 #endif /* TCP_NEWRENO_H */
smart pointer class similar to boost::intrusive_ptr
Definition: ptr.h:59
virtual void NewAck(SequenceNumber32 const &seq)
Update buffers w.r.t.
Definition: tcp-newreno.cc:118
bool m_limitedTx
perform limited transmit
Definition: tcp-newreno.h:85
virtual int Listen(void)
Listen for incoming connections.
Definition: tcp-newreno.cc:86
virtual uint32_t GetInitialCwnd(void) const
Get the initial Congestion Window.
Definition: tcp-newreno.cc:242
virtual uint32_t Window(void)
Return the max possible number of unacked bytes.
Definition: tcp-newreno.cc:104
An implementation of a stream socket using TCP.
Definition: tcp-newreno.h:36
virtual void SetSegSize(uint32_t size)
Set the segment size.
Definition: tcp-newreno.cc:216
a polymophic address class
Definition: address.h:86
static TypeId GetTypeId(void)
Get the type ID.
Definition: tcp-newreno.cc:39
virtual void DupAck(const TcpHeader &t, uint32_t count)
Received dupack (duplicate ACK)
Definition: tcp-newreno.cc:163
virtual void SetInitialCwnd(uint32_t cwnd)
Set the initial Congestion Window.
Definition: tcp-newreno.cc:235
virtual int Connect(const Address &address)
Initiate a connection to a remote host.
Definition: tcp-newreno.cc:95
TracedValue< uint32_t > m_cWnd
Congestion window.
Definition: tcp-newreno.h:79
A base class for implementation of a stream socket using TCP.
void InitializeCwnd(void)
Set the congestion window when connection starts.
Definition: tcp-newreno.cc:248
bool m_inFastRec
currently in fast recovery
Definition: tcp-newreno.h:84
uint32_t m_ssThresh
Slow Start Threshold.
Definition: tcp-newreno.h:80
uint32_t m_retxThresh
Fast Retransmit threshold.
Definition: tcp-newreno.h:83
Header for the Transmission Control Protocol.
Definition: tcp-header.h:43
virtual void Retransmit(void)
Halving cwnd and call DoRetransmit()
Definition: tcp-newreno.cc:192
uint32_t m_initialCWnd
Initial cWnd value.
Definition: tcp-newreno.h:81
virtual uint32_t GetSSThresh(void) const
Get the Slow Start Threshold.
Definition: tcp-newreno.cc:229
virtual Ptr< TcpSocketBase > Fork(void)
Call CopyObject<> to clone me.
Definition: tcp-newreno.cc:111
tuple address
Definition: first.py:37
virtual void SetSSThresh(uint32_t threshold)
Set the Slow Start Threshold.
Definition: tcp-newreno.cc:223
Create an unbound tcp socket.
Definition: tcp-newreno.cc:59
a unique identifier for an interface.
Definition: type-id.h:49
SequenceNumber32 m_recover
Previous highest Tx seqnum for fast recovery.
Definition: tcp-newreno.h:82
virtual ~TcpNewReno(void)
Definition: tcp-newreno.cc:80