author | Sebastien Vincent <vincent@clarinet.u-strasbg.fr> |
Tue, 01 Jul 2008 10:52:11 -0700 | |
changeset 3363 | 33d1ca2e4ba4 |
parent 3266 | 1ae7df5cf87b |
child 3404 | b5d4a04c7b68 |
permissions | -rw-r--r-- |
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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* Copyright (c) 2007 Georgia Tech Research Corporation |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation; |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* Author: Raj Bhattacharjea <raj.b@gatech.edu> |
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*/ |
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#ifndef TCP_HEADER_H |
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#define TCP_HEADER_H |
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#include <stdint.h> |
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#include "ns3/header.h" |
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#include "ns3/buffer.h" |
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#include "ns3/tcp-socket-factory.h" |
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#include "ns3/ipv4-address.h" |
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#include "ns3/sequence-number.h" |
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namespace ns3 { |
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/** |
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* \brief Header for the Transmission Control Protocol |
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* |
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* This class has fields corresponding to those in a network TCP header |
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* (port numbers, sequence and acknowledgement numbers, flags, etc) as well |
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* as methods for serialization to and deserialization from a byte buffer. |
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*/ |
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|
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class TcpHeader : public Header |
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{ |
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public: |
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TcpHeader (); |
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virtual ~TcpHeader (); |
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/** |
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* \brief Enable checksum calculation for TCP (XXX currently has no effect) |
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*/ |
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void EnableChecksums (void); |
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//Setters |
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/** |
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* \param port The source port for this TcpHeader |
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*/ |
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void SetSourcePort (uint16_t port); |
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/** |
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* \param port the destination port for this TcpHeader |
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*/ |
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void SetDestinationPort (uint16_t port); |
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/** |
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* \param sequenceNumber the sequence number for this TcpHeader |
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*/ |
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void SetSequenceNumber (SequenceNumber sequenceNumber); |
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/** |
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* \param ackNumber the ACK number for this TcpHeader |
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*/ |
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void SetAckNumber (SequenceNumber ackNumber); |
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/** |
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* \param length the length of this TcpHeader |
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*/ |
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void SetLength (uint8_t length); |
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/** |
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* \param flags the flags for this TcpHeader |
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*/ |
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void SetFlags (uint8_t flags); |
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/** |
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* \param windowSize the window size for this TcpHeader |
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*/ |
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void SetWindowSize (uint16_t windowSize); |
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/** |
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* \param checksum the checksum for this TcpHeader |
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*/ |
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void SetChecksum (uint16_t checksum); |
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/** |
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* \param urgentPointer the urgent pointer for this TcpHeader |
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*/ |
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void SetUrgentPointer (uint16_t urgentPointer); |
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//Getters |
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/** |
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* \return The source port for this TcpHeader |
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*/ |
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uint16_t GetSourcePort () const; |
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/** |
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* \return the destination port for this TcpHeader |
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*/ |
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uint16_t GetDestinationPort () const; |
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/** |
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* \return the sequence number for this TcpHeader |
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*/ |
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SequenceNumber GetSequenceNumber () const; |
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/** |
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* \return the ACK number for this TcpHeader |
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*/ |
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SequenceNumber GetAckNumber () const; |
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/** |
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* \return the length of this TcpHeader |
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*/ |
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110 |
uint8_t GetLength () const; |
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111 |
/** |
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112 |
* \return the flags for this TcpHeader |
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113 |
*/ |
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114 |
uint8_t GetFlags () const; |
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115 |
/** |
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116 |
* \return the window size for this TcpHeader |
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117 |
*/ |
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118 |
uint16_t GetWindowSize () const; |
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119 |
/** |
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120 |
* \return the checksum for this TcpHeader |
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121 |
*/ |
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122 |
uint16_t GetChecksum () const; |
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123 |
/** |
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124 |
* \return the urgent pointer for this TcpHeader |
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125 |
*/ |
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126 |
uint16_t GetUrgentPointer () const; |
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127 |
|
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128 |
/** |
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129 |
* \param source the ip source to use in the underlying |
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130 |
* ip packet. |
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131 |
* \param destination the ip destination to use in the |
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132 |
* underlying ip packet. |
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133 |
* \param protocol the protocol number to use in the underlying |
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134 |
* ip packet. |
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|
135 |
* |
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|
136 |
* If you want to use tcp checksums, you should call this |
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|
137 |
* method prior to adding the header to a packet. |
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138 |
*/ |
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139 |
void InitializeChecksum (Ipv4Address source, |
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140 |
Ipv4Address destination, |
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|
141 |
uint8_t protocol); |
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142 |
|
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|
143 |
typedef enum { NONE = 0, FIN = 1, SYN = 2, RST = 4, PSH = 8, ACK = 16, |
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|
144 |
URG = 32} Flags_t; |
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|
145 |
|
2646
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|
146 |
static TypeId GetTypeId (void); |
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|
147 |
virtual TypeId GetInstanceTypeId (void) const; |
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|
148 |
virtual void Print (std::ostream &os) const; |
2643
2a3324f4dabe
define a TypeId for each Header/Trailer.
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|
149 |
virtual uint32_t GetSerializedSize (void) const; |
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150 |
virtual void Serialize (Buffer::Iterator start) const; |
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|
151 |
virtual uint32_t Deserialize (Buffer::Iterator start); |
2224
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|
152 |
|
3363
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bug 236: add optional support for tcp and udp checksum.
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153 |
/** |
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154 |
* \param size The payload size in bytes |
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155 |
*/ |
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|
156 |
void SetPayloadSize (uint16_t size); |
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157 |
|
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|
158 |
/** |
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|
159 |
* \brief Is the TCP checksum correct ? |
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|
160 |
* \returns true if the checksum is correct, false otherwise. |
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161 |
*/ |
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|
162 |
bool IsChecksumOk (void) const; |
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|
163 |
|
2224
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|
164 |
private: |
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|
165 |
uint16_t m_sourcePort; |
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|
166 |
uint16_t m_destinationPort; |
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|
167 |
uint32_t m_sequenceNumber; |
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|
168 |
uint32_t m_ackNumber; |
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|
169 |
uint8_t m_length; // really a uint4_t |
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|
170 |
uint8_t m_flags; // really a uint6_t |
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|
171 |
uint16_t m_windowSize; |
3363
33d1ca2e4ba4
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|
172 |
uint16_t m_urgentPointer; |
33d1ca2e4ba4
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|
173 |
uint16_t m_payloadSize; |
33d1ca2e4ba4
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|
174 |
uint16_t m_initialChecksum; |
2224
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|
175 |
uint16_t m_checksum; |
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|
176 |
|
3363
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bug 236: add optional support for tcp and udp checksum.
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|
177 |
bool m_calcChecksum; |
33d1ca2e4ba4
bug 236: add optional support for tcp and udp checksum.
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|
178 |
bool m_goodChecksum; |
33d1ca2e4ba4
bug 236: add optional support for tcp and udp checksum.
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|
179 |
|
2224
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|
180 |
}; |
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|
181 |
|
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|
182 |
}; // namespace ns3 |
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Added in ns-3-tcp (second try)
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|
183 |
|
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Added in ns-3-tcp (second try)
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|
184 |
#endif /* TCP_HEADER */ |