A Discrete-Event Network Simulator
API
tcp-option-sack-permitted.cc
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2011 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
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 * Original Author: Adrian Sai-wah Tam <adrian.sw.tam@gmail.com>
19 * Documentation, test cases: Truc Anh N. Nguyen <annguyen@ittc.ku.edu>
20 * ResiliNets Research Group https://resilinets.org/
21 * The University of Kansas
22 * James P.G. Sterbenz <jpgs@ittc.ku.edu>, director
23 */
24
26#include "ns3/log.h"
27#include "ns3/tcp-header.h"
28
29namespace ns3 {
30
31NS_LOG_COMPONENT_DEFINE ("TcpOptionSackPermitted");
32
33NS_OBJECT_ENSURE_REGISTERED (TcpOptionSackPermitted);
34
36 : TcpOption ()
37{
38}
39
41{
42}
43
46{
47 static TypeId tid = TypeId ("ns3::TcpOptionSackPermitted")
49 .SetGroupName ("Internet")
50 .AddConstructor<TcpOptionSackPermitted> ()
51 ;
52 return tid;
53}
54
57{
58 return GetTypeId ();
59}
60
61void
62TcpOptionSackPermitted::Print (std::ostream &os) const
63{
64 os << "[sack_perm]";
65}
66
69{
70 return 2;
71}
72
73void
75{
77 i.WriteU8 (GetKind ()); // Kind
78 i.WriteU8 (2); // Length
79}
80
83{
85
86 uint8_t readKind = i.ReadU8 ();
87 if (readKind != GetKind ())
88 {
89 NS_LOG_WARN ("Malformed Sack-Permitted option");
90 return 0;
91 }
92
93 uint8_t size = i.ReadU8 ();
94 if (size != 2)
95 {
96 NS_LOG_WARN ("Malformed Sack-Permitted option");
97 return 0;
98 }
99 return GetSerializedSize ();
100}
101
102uint8_t
104{
106}
107
108} // namespace ns3
iterator in a Buffer instance
Definition: buffer.h:99
void WriteU8(uint8_t data)
Definition: buffer.h:869
uint8_t ReadU8(void)
Definition: buffer.h:1021
Base class for all kinds of TCP options.
Definition: tcp-option.h:37
@ SACKPERMITTED
SACKPERMITTED.
Definition: tcp-option.h:61
Defines the TCP option of kind 4 (selective acknowledgment permitted option) as in RFC 2018
virtual TypeId GetInstanceTypeId(void) const
Get the most derived TypeId for this Object.
virtual void Serialize(Buffer::Iterator start) const
Serialize the Option to a buffer iterator.
static TypeId GetTypeId(void)
Get the type ID.
virtual uint32_t GetSerializedSize(void) const
Returns number of bytes required for Option serialization.
virtual uint32_t Deserialize(Buffer::Iterator start)
Deserialize the Option from a buffer iterator.
virtual void Print(std::ostream &os) const
Print the Option contents.
virtual uint8_t GetKind(void) const
Get the ‘kind’ (as in RFC 793) of this option.
a unique identifier for an interface.
Definition: type-id.h:59
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:922
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:206
#define NS_LOG_WARN(msg)
Use NS_LOG to output a message of level LOG_WARN.
Definition: log.h:266
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
Every class exported by the ns3 library is enclosed in the ns3 namespace.
def start()
Definition: core.py:1852