A Discrete-Event Network Simulator
API
tcp-tx-item.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2018 Natale Patriciello <natale.patriciello@gmail.com>
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
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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  */
19 #include "tcp-tx-item.h"
20 
21 namespace ns3 {
22 
23 void
24 TcpTxItem::Print (std::ostream &os) const
25 {
26  bool comma = false;
27  os << "[" << m_startSeq << ";" << m_startSeq + GetSeqSize () << "|"
28  << GetSeqSize () << "]";
29 
30  if (m_lost)
31  {
32  os << "[lost]";
33  comma = true;
34  }
35  if (m_retrans)
36  {
37  if (comma)
38  {
39  os << ",";
40  }
41 
42  os << "[retrans]";
43  comma = true;
44  }
45  if (m_sacked)
46  {
47  if (comma)
48  {
49  os << ",";
50  }
51  os << "[sacked]";
52  comma = true;
53  }
54  if (comma)
55  {
56  os << ",";
57  }
58  os << "[" << m_lastSent.GetSeconds () << "]";
59 }
60 
61 uint32_t
63 {
64  return m_packet && m_packet->GetSize () > 0 ? m_packet->GetSize () : 1;
65 }
66 
67 bool
68 TcpTxItem::IsSacked (void) const
69 {
70  return m_sacked;
71 }
72 
73 bool
75 {
76  return m_retrans;
77 }
78 
81 {
82  return m_packet->Copy ();
83 }
84 
87 {
88  return m_packet;
89 }
90 
91 const Time &
93 {
94  return m_lastSent;
95 }
96 
99 {
100  return m_rateInfo;
101 }
102 
103 
104 } // namespace ns3
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:102
bool m_retrans
Indicates if the segment is retransmitted.
Definition: tcp-tx-item.h:108
uint32_t GetSize(void) const
Returns the the size in bytes of the packet (including the zero-filled initial payload).
Definition: packet.h:852
double GetSeconds(void) const
Get an approximation of the time stored in this instance in the indicated unit.
Definition: nstime.h:355
uint32_t GetSeqSize(void) const
Get the size in the sequence number space.
Definition: tcp-tx-item.cc:62
bool IsRetrans(void) const
Is the item retransmitted?
Definition: tcp-tx-item.cc:74
Time m_lastSent
Timestamp of the time at which the segment has been sent last time.
Definition: tcp-tx-item.h:109
SequenceNumber32 m_startSeq
Sequence number of the item (if transmitted)
Definition: tcp-tx-item.h:105
RateInformation & GetRateInformation(void)
Get (to modify) the Rate Information of this item.
Definition: tcp-tx-item.cc:98
bool IsSacked(void) const
Is the item sacked?
Definition: tcp-tx-item.cc:68
RateInformation m_rateInfo
Rate information of the item.
Definition: tcp-tx-item.h:112
Various rate-related information, can be accessed by TcpRateOps.
Definition: tcp-tx-item.h:85
Ptr< Packet > m_packet
Application packet (can be null)
Definition: tcp-tx-item.h:106
Every class exported by the ns3 library is enclosed in the ns3 namespace.
Ptr< Packet > Copy(void) const
performs a COW copy of the packet.
Definition: packet.cc:121
Ptr< const Packet > GetPacket(void) const
Get the Packet underlying this item.
Definition: tcp-tx-item.cc:86
Ptr< Packet > GetPacketCopy(void) const
Get a copy of the Packet underlying this item.
Definition: tcp-tx-item.cc:80
const Time & GetLastSent(void) const
Get a reference to the time the packet was sent for the last time.
Definition: tcp-tx-item.cc:92
bool m_sacked
Indicates if the segment has been SACKed.
Definition: tcp-tx-item.h:110
void Print(std::ostream &os) const
Print the time.
Definition: tcp-tx-item.cc:24
bool m_lost
Indicates if the segment has been lost (RTO)
Definition: tcp-tx-item.h:107