A Discrete-Event Network Simulator
API
tcp-tx-item.cc
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1 /*
2  * Copyright (c) 2018 Natale Patriciello <natale.patriciello@gmail.com>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation;
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16  *
17  */
18 #include "tcp-tx-item.h"
19 
20 namespace ns3
21 {
22 
23 void
24 TcpTxItem::Print(std::ostream& os, Time::Unit unit /* = Time::S */) const
25 {
26  bool comma = false;
27  os << "[" << m_startSeq << ";" << m_startSeq + GetSeqSize() << "|" << GetSeqSize() << "]";
28 
29  if (m_lost)
30  {
31  os << "[lost]";
32  comma = true;
33  }
34  if (m_retrans)
35  {
36  if (comma)
37  {
38  os << ",";
39  }
40 
41  os << "[retrans]";
42  comma = true;
43  }
44  if (m_sacked)
45  {
46  if (comma)
47  {
48  os << ",";
49  }
50  os << "[sacked]";
51  comma = true;
52  }
53  if (comma)
54  {
55  os << ",";
56  }
57  os << "[" << m_lastSent.As(unit) << "]";
58 }
59 
60 uint32_t
62 {
63  return m_packet && m_packet->GetSize() > 0 ? m_packet->GetSize() : 1;
64 }
65 
66 bool
68 {
69  return m_sacked;
70 }
71 
72 bool
74 {
75  return m_retrans;
76 }
77 
80 {
81  return m_packet->Copy();
82 }
83 
86 {
87  return m_packet;
88 }
89 
90 const Time&
92 {
93  return m_lastSent;
94 }
95 
98 {
99  return m_rateInfo;
100 }
101 
102 } // namespace ns3
uint32_t GetSize() const
Returns the the size in bytes of the packet (including the zero-filled initial payload).
Definition: packet.h:861
Ptr< Packet > Copy() const
performs a COW copy of the packet.
Definition: packet.cc:131
bool m_sacked
Indicates if the segment has been SACKed.
Definition: tcp-tx-item.h:116
bool m_retrans
Indicates if the segment is retransmitted.
Definition: tcp-tx-item.h:104
SequenceNumber32 m_startSeq
Sequence number of the item (if transmitted)
Definition: tcp-tx-item.h:111
bool IsSacked() const
Is the item sacked?
Definition: tcp-tx-item.cc:67
Time m_lastSent
Timestamp of the time at which the segment has been sent last time.
Definition: tcp-tx-item.h:114
RateInformation m_rateInfo
Rate information of the item.
Definition: tcp-tx-item.h:118
Ptr< const Packet > GetPacket() const
Get the Packet underlying this item.
Definition: tcp-tx-item.cc:85
uint32_t GetSeqSize() const
Get the size in the sequence number space.
Definition: tcp-tx-item.cc:61
Ptr< Packet > GetPacketCopy() const
Get a copy of the Packet underlying this item.
Definition: tcp-tx-item.cc:79
const Time & GetLastSent() const
Get a reference to the time the packet was sent for the last time.
Definition: tcp-tx-item.cc:91
RateInformation & GetRateInformation()
Get (to modify) the Rate Information of this item.
Definition: tcp-tx-item.cc:97
bool m_lost
Indicates if the segment has been lost (RTO)
Definition: tcp-tx-item.h:113
Ptr< Packet > m_packet
Application packet (can be null)
Definition: tcp-tx-item.h:112
bool IsRetrans() const
Is the item retransmitted?
Definition: tcp-tx-item.cc:73
void Print(std::ostream &os, Time::Unit unit=Time::S) const
Print the time.
Definition: tcp-tx-item.cc:24
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:105
TimeWithUnit As(const Unit unit=Time::AUTO) const
Attach a unit to a Time, to facilitate output in a specific unit.
Definition: time.cc:415
Unit
The unit to use to interpret a number representing time.
Definition: nstime.h:111
Every class exported by the ns3 library is enclosed in the ns3 namespace.
Various rate-related information, can be accessed by TcpRateOps.
Definition: tcp-tx-item.h:88