1314 lines
35 KiB
C++
1314 lines
35 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2005,2006 INRIA
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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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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*/
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#include "packet.h"
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#include "ns3/assert.h"
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#include "ns3/log.h"
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#include "ns3/simulator.h"
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#include "ns3/test.h"
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#include <string>
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#include <stdarg.h>
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NS_LOG_COMPONENT_DEFINE ("Packet");
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namespace ns3 {
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uint32_t Packet::m_globalUid = 0;
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TypeId
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ByteTagIterator::Item::GetTypeId (void) const
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{
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return m_tid;
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}
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uint32_t
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ByteTagIterator::Item::GetStart (void) const
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{
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return m_start;
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}
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uint32_t
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ByteTagIterator::Item::GetEnd (void) const
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{
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return m_end;
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}
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void
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ByteTagIterator::Item::GetTag (Tag &tag) const
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{
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if (tag.GetInstanceTypeId () != GetTypeId ())
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{
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NS_FATAL_ERROR ("The tag you provided is not of the right type.");
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}
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tag.Deserialize (m_buffer);
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}
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ByteTagIterator::Item::Item (TypeId tid, uint32_t start, uint32_t end, TagBuffer buffer)
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: m_tid (tid),
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m_start (start),
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m_end (end),
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m_buffer (buffer)
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{}
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bool
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ByteTagIterator::HasNext (void) const
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{
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return m_current.HasNext ();
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}
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ByteTagIterator::Item
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ByteTagIterator::Next (void)
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{
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ByteTagList::Iterator::Item i = m_current.Next ();
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return ByteTagIterator::Item (i.tid,
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i.start-m_current.GetOffsetStart (),
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i.end-m_current.GetOffsetStart (),
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i.buf);
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}
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ByteTagIterator::ByteTagIterator (ByteTagList::Iterator i)
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: m_current (i)
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{}
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PacketTagIterator::PacketTagIterator (const struct PacketTagList::TagData *head)
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: m_current (head)
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{}
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bool
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PacketTagIterator::HasNext (void) const
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{
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return m_current != 0;
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}
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PacketTagIterator::Item
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PacketTagIterator::Next (void)
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{
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NS_ASSERT (HasNext ());
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const struct PacketTagList::TagData *prev = m_current;
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m_current = m_current->next;
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return PacketTagIterator::Item (prev);
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}
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PacketTagIterator::Item::Item (const struct PacketTagList::TagData *data)
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: m_data (data)
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{}
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TypeId
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PacketTagIterator::Item::GetTypeId (void) const
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{
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return m_data->tid;
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}
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void
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PacketTagIterator::Item::GetTag (Tag &tag) const
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{
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NS_ASSERT (tag.GetInstanceTypeId () == m_data->tid);
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tag.Deserialize (TagBuffer ((uint8_t*)m_data->data, (uint8_t*)m_data->data+PACKET_TAG_MAX_SIZE));
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}
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Ptr<Packet>
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Packet::Copy (void) const
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{
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// we need to invoke the copy constructor directly
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// rather than calling Create because the copy constructor
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// is private.
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return Ptr<Packet> (new Packet (*this), false);
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}
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Packet::Packet ()
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: m_buffer (),
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m_byteTagList (),
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m_packetTagList (),
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/* The upper 32 bits of the packet id in
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* metadata is for the system id. For non-
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* distributed simulations, this is simply
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* zero. The lower 32 bits are for the
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* global UID
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*/
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m_metadata (static_cast<uint64_t> (Simulator::GetSystemId ()) << 32 | m_globalUid, 0),
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m_nixVector (0)
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{
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m_globalUid++;
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}
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Packet::Packet (const Packet &o)
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: m_buffer (o.m_buffer),
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m_byteTagList (o.m_byteTagList),
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m_packetTagList (o.m_packetTagList),
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m_metadata (o.m_metadata)
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{
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o.m_nixVector ? m_nixVector = o.m_nixVector->Copy ()
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: m_nixVector = 0;
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}
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Packet &
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Packet::operator = (const Packet &o)
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{
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if (this == &o)
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{
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return *this;
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}
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m_buffer = o.m_buffer;
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m_byteTagList = o.m_byteTagList;
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m_packetTagList = o.m_packetTagList;
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m_metadata = o.m_metadata;
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o.m_nixVector ? m_nixVector = o.m_nixVector->Copy ()
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: m_nixVector = 0;
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return *this;
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}
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Packet::Packet (uint32_t size)
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: m_buffer (size),
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m_byteTagList (),
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m_packetTagList (),
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/* The upper 32 bits of the packet id in
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* metadata is for the system id. For non-
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* distributed simulations, this is simply
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* zero. The lower 32 bits are for the
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* global UID
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*/
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m_metadata (static_cast<uint64_t> (Simulator::GetSystemId ()) << 32 | m_globalUid, size),
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m_nixVector (0)
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{
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m_globalUid++;
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}
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Packet::Packet (uint8_t const *buffer, uint32_t size, bool magic)
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: m_buffer (0, false),
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m_byteTagList (),
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m_packetTagList (),
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m_metadata (0,0),
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m_nixVector (0)
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{
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NS_ASSERT (magic);
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Deserialize (buffer, size);
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}
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Packet::Packet (uint8_t const*buffer, uint32_t size)
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: m_buffer (),
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m_byteTagList (),
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m_packetTagList (),
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/* The upper 32 bits of the packet id in
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* metadata is for the system id. For non-
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* distributed simulations, this is simply
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* zero. The lower 32 bits are for the
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* global UID
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*/
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m_metadata (static_cast<uint64_t> (Simulator::GetSystemId ()) << 32 | m_globalUid, size),
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m_nixVector (0)
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{
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m_globalUid++;
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m_buffer.AddAtStart (size);
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Buffer::Iterator i = m_buffer.Begin ();
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i.Write (buffer, size);
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}
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Packet::Packet (const Buffer &buffer, const ByteTagList &byteTagList,
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const PacketTagList &packetTagList, const PacketMetadata &metadata)
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: m_buffer (buffer),
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m_byteTagList (byteTagList),
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m_packetTagList (packetTagList),
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m_metadata (metadata),
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m_nixVector (0)
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{}
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Ptr<Packet>
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Packet::CreateFragment (uint32_t start, uint32_t length) const
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{
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NS_LOG_FUNCTION (this << start << length);
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Buffer buffer = m_buffer.CreateFragment (start, length);
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NS_ASSERT (m_buffer.GetSize () >= start + length);
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uint32_t end = m_buffer.GetSize () - (start + length);
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PacketMetadata metadata = m_metadata.CreateFragment (start, end);
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// again, call the constructor directly rather than
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// through Create because it is private.
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return Ptr<Packet> (new Packet (buffer, m_byteTagList, m_packetTagList, metadata), false);
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}
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void
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Packet::SetNixVector (Ptr<NixVector> nixVector)
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{
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m_nixVector = nixVector;
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}
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Ptr<NixVector>
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Packet::GetNixVector (void) const
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{
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return m_nixVector;
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}
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void
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Packet::AddHeader (const Header &header)
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{
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uint32_t size = header.GetSerializedSize ();
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NS_LOG_FUNCTION (this << header.GetInstanceTypeId ().GetName () << size);
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uint32_t orgStart = m_buffer.GetCurrentStartOffset ();
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bool resized = m_buffer.AddAtStart (size);
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if (resized)
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{
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m_byteTagList.AddAtStart (m_buffer.GetCurrentStartOffset () + size - orgStart,
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m_buffer.GetCurrentStartOffset () + size);
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}
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header.Serialize (m_buffer.Begin ());
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m_metadata.AddHeader (header, size);
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}
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uint32_t
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Packet::RemoveHeader (Header &header)
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{
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uint32_t deserialized = header.Deserialize (m_buffer.Begin ());
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NS_LOG_FUNCTION (this << header.GetInstanceTypeId ().GetName () << deserialized);
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m_buffer.RemoveAtStart (deserialized);
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m_metadata.RemoveHeader (header, deserialized);
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return deserialized;
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}
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uint32_t
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Packet::PeekHeader (Header &header) const
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{
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uint32_t deserialized = header.Deserialize (m_buffer.Begin ());
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NS_LOG_FUNCTION (this << header.GetInstanceTypeId ().GetName () << deserialized);
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return deserialized;
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}
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void
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Packet::AddTrailer (const Trailer &trailer)
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{
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uint32_t size = trailer.GetSerializedSize ();
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NS_LOG_FUNCTION (this << trailer.GetInstanceTypeId ().GetName () << size);
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uint32_t orgStart = m_buffer.GetCurrentStartOffset ();
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bool resized = m_buffer.AddAtEnd (size);
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if (resized)
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{
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m_byteTagList.AddAtEnd (m_buffer.GetCurrentStartOffset () - orgStart,
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m_buffer.GetCurrentEndOffset () - size);
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}
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Buffer::Iterator end = m_buffer.End ();
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trailer.Serialize (end);
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m_metadata.AddTrailer (trailer, size);
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}
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uint32_t
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Packet::RemoveTrailer (Trailer &trailer)
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{
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uint32_t deserialized = trailer.Deserialize (m_buffer.End ());
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NS_LOG_FUNCTION (this << trailer.GetInstanceTypeId ().GetName () << deserialized);
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m_buffer.RemoveAtEnd (deserialized);
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m_metadata.RemoveTrailer (trailer, deserialized);
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return deserialized;
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}
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uint32_t
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Packet::PeekTrailer (Trailer &trailer)
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{
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uint32_t deserialized = trailer.Deserialize (m_buffer.End ());
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NS_LOG_FUNCTION (this << trailer.GetInstanceTypeId ().GetName () << deserialized);
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return deserialized;
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}
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void
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Packet::AddAtEnd (Ptr<const Packet> packet)
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{
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NS_LOG_FUNCTION (this << packet << packet->GetSize ());
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uint32_t aStart = m_buffer.GetCurrentStartOffset ();
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uint32_t bEnd = packet->m_buffer.GetCurrentEndOffset ();
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m_buffer.AddAtEnd (packet->m_buffer);
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uint32_t appendPrependOffset = m_buffer.GetCurrentEndOffset () - packet->m_buffer.GetSize ();
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m_byteTagList.AddAtEnd (m_buffer.GetCurrentStartOffset () - aStart,
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appendPrependOffset);
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ByteTagList copy = packet->m_byteTagList;
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copy.AddAtStart (m_buffer.GetCurrentEndOffset () - bEnd,
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appendPrependOffset);
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m_byteTagList.Add (copy);
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m_metadata.AddAtEnd (packet->m_metadata);
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}
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void
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Packet::AddPaddingAtEnd (uint32_t size)
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{
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NS_LOG_FUNCTION (this << size);
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uint32_t orgEnd = m_buffer.GetCurrentEndOffset ();
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bool resized = m_buffer.AddAtEnd (size);
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if (resized)
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{
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m_byteTagList.AddAtEnd (m_buffer.GetCurrentEndOffset () - orgEnd,
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m_buffer.GetCurrentEndOffset () - size);
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}
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m_metadata.AddPaddingAtEnd (size);
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}
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void
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Packet::RemoveAtEnd (uint32_t size)
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{
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NS_LOG_FUNCTION (this << size);
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m_buffer.RemoveAtEnd (size);
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m_metadata.RemoveAtEnd (size);
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}
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void
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Packet::RemoveAtStart (uint32_t size)
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{
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NS_LOG_FUNCTION (this << size);
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m_buffer.RemoveAtStart (size);
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m_metadata.RemoveAtStart (size);
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}
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void
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Packet::RemoveAllByteTags (void)
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{
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NS_LOG_FUNCTION (this);
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m_byteTagList.RemoveAll ();
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}
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uint8_t const *
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Packet::PeekData (void) const
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{
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NS_LOG_FUNCTION (this);
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uint32_t oldStart = m_buffer.GetCurrentStartOffset ();
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uint8_t const * data = m_buffer.PeekData ();
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uint32_t newStart = m_buffer.GetCurrentStartOffset ();
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// Update tag offsets if buffer offsets were changed
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const_cast<ByteTagList &>(m_byteTagList).AddAtStart (newStart - oldStart, newStart);
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return data;
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}
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uint32_t
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Packet::CopyData (uint8_t *buffer, uint32_t size) const
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{
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return m_buffer.CopyData (buffer, size);
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}
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void
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Packet::CopyData(std::ostream *os, uint32_t size) const
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{
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return m_buffer.CopyData (os, size);
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}
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uint64_t
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Packet::GetUid (void) const
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{
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return m_metadata.GetUid ();
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}
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void
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Packet::PrintByteTags (std::ostream &os) const
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{
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ByteTagIterator i = GetByteTagIterator ();
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while (i.HasNext ())
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{
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ByteTagIterator::Item item = i.Next ();
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os << item.GetTypeId ().GetName () << " [" << item.GetStart () << "-" << item.GetEnd () << "]";
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Callback<ObjectBase *> constructor = item.GetTypeId ().GetConstructor ();
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if (constructor.IsNull ())
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{
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if (i.HasNext ())
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{
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os << " ";
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}
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continue;
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}
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Tag *tag = dynamic_cast<Tag *> (constructor ());
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NS_ASSERT (tag != 0);
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os << " ";
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item.GetTag (*tag);
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tag->Print (os);
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if (i.HasNext ())
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{
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os << " ";
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}
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delete tag;
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}
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}
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void
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Packet::Print (std::ostream &os) const
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{
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PacketMetadata::ItemIterator i = m_metadata.BeginItem (m_buffer);
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while (i.HasNext ())
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{
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PacketMetadata::Item item = i.Next ();
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if (item.isFragment)
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{
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switch (item.type) {
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case PacketMetadata::Item::PAYLOAD:
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os << "Payload";
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break;
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case PacketMetadata::Item::HEADER:
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case PacketMetadata::Item::TRAILER:
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os << item.tid.GetName ();
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break;
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}
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os << " Fragment [" << item.currentTrimedFromStart<<":"
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<< (item.currentTrimedFromStart + item.currentSize) << "]";
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}
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else
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{
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switch (item.type) {
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case PacketMetadata::Item::PAYLOAD:
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os << "Payload (size=" << item.currentSize << ")";
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break;
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case PacketMetadata::Item::HEADER:
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case PacketMetadata::Item::TRAILER:
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os << item.tid.GetName () << " (";
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{
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NS_ASSERT (item.tid.HasConstructor ());
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Callback<ObjectBase *> constructor = item.tid.GetConstructor ();
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NS_ASSERT (!constructor.IsNull ());
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ObjectBase *instance = constructor ();
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NS_ASSERT (instance != 0);
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Chunk *chunk = dynamic_cast<Chunk *> (instance);
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NS_ASSERT (chunk != 0);
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chunk->Deserialize (item.current);
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chunk->Print (os);
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delete chunk;
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}
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os << ")";
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break;
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}
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}
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if (i.HasNext ())
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{
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os << " ";
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}
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}
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#if 0
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// The code below will work only if headers and trailers
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// define the right attributes which is not the case for
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// now. So, as a temporary measure, we use the
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// headers' and trailers' Print method as shown above.
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PacketMetadata::ItemIterator i = m_metadata.BeginItem (m_buffer);
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while (i.HasNext ())
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{
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PacketMetadata::Item item = i.Next ();
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if (item.isFragment)
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{
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switch (item.type) {
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case PacketMetadata::Item::PAYLOAD:
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os << "Payload";
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break;
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case PacketMetadata::Item::HEADER:
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case PacketMetadata::Item::TRAILER:
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os << item.tid.GetName ();
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break;
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}
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os << " Fragment [" << item.currentTrimedFromStart<<":"
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<< (item.currentTrimedFromStart + item.currentSize) << "]";
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}
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else
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{
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switch (item.type) {
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case PacketMetadata::Item::PAYLOAD:
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os << "Payload (size=" << item.currentSize << ")";
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break;
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case PacketMetadata::Item::HEADER:
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case PacketMetadata::Item::TRAILER:
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os << item.tid.GetName () << "(";
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{
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NS_ASSERT (item.tid.HasConstructor ());
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Callback<ObjectBase *> constructor = item.tid.GetConstructor ();
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NS_ASSERT (constructor.IsNull ());
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ObjectBase *instance = constructor ();
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NS_ASSERT (instance != 0);
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Chunk *chunk = dynamic_cast<Chunk *> (instance);
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NS_ASSERT (chunk != 0);
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chunk->Deserialize (item.current);
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for (uint32_t j = 0; j < item.tid.GetAttributeN (); j++)
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{
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std::string attrName = item.tid.GetAttributeName (j);
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std::string value;
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bool ok = chunk->GetAttribute (attrName, value);
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NS_ASSERT (ok);
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os << attrName << "=" << value;
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if ((j + 1) < item.tid.GetAttributeN ())
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{
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os << ",";
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}
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}
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}
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os << ")";
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break;
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}
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|
}
|
|
if (i.HasNext ())
|
|
{
|
|
os << " ";
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
PacketMetadata::ItemIterator
|
|
Packet::BeginItem (void) const
|
|
{
|
|
return m_metadata.BeginItem (m_buffer);
|
|
}
|
|
|
|
void
|
|
Packet::EnablePrinting (void)
|
|
{
|
|
NS_LOG_FUNCTION_NOARGS ();
|
|
PacketMetadata::Enable ();
|
|
}
|
|
|
|
void
|
|
Packet::EnableChecking (void)
|
|
{
|
|
NS_LOG_FUNCTION_NOARGS ();
|
|
PacketMetadata::EnableChecking ();
|
|
}
|
|
|
|
uint32_t Packet::GetSerializedSize (void) const
|
|
{
|
|
uint32_t size = 0;
|
|
|
|
if (m_nixVector)
|
|
{
|
|
// increment total size by the size of the nix-vector
|
|
// ensuring 4-byte boundary
|
|
size += ((m_nixVector->GetSerializedSize () + 3) & (~3));
|
|
|
|
// add 4-bytes for entry of total length of nix-vector
|
|
size += 4;
|
|
}
|
|
else
|
|
{
|
|
// if no nix-vector, still have to add 4-bytes
|
|
// to account for the entry of total size for
|
|
// nix-vector in the buffer
|
|
size += 4;
|
|
}
|
|
|
|
//Tag size
|
|
//XXX
|
|
//size += m_tags.GetSerializedSize ();
|
|
|
|
// increment total size by size of meta-data
|
|
// ensuring 4-byte boundary
|
|
size += ((m_metadata.GetSerializedSize () + 3) & (~3));
|
|
|
|
// add 4-bytes for entry of total length of meta-data
|
|
size += 4;
|
|
|
|
// increment total size by size of buffer
|
|
// ensuring 4-byte boundary
|
|
size += ((m_buffer.GetSerializedSize () + 3) & (~3));
|
|
|
|
// add 4-bytes for entry of total length of buffer
|
|
size += 4;
|
|
|
|
return size;
|
|
}
|
|
|
|
uint32_t
|
|
Packet::Serialize (uint8_t* buffer, uint32_t maxSize) const
|
|
{
|
|
uint32_t* p = reinterpret_cast<uint32_t *> (buffer);
|
|
uint32_t size = 0;
|
|
|
|
// if nix-vector exists, serialize it
|
|
if (m_nixVector)
|
|
{
|
|
uint32_t nixSize = m_nixVector->GetSerializedSize ();
|
|
if (size + nixSize <= maxSize)
|
|
{
|
|
// put the total length of nix-vector in the
|
|
// buffer. this includes 4-bytes for total
|
|
// length itself
|
|
*p++ = nixSize + 4;
|
|
size += nixSize;
|
|
|
|
// serialize the nix-vector
|
|
uint32_t serialized =
|
|
m_nixVector->Serialize (p, nixSize);
|
|
if (serialized)
|
|
{
|
|
// increment p by nixSize bytes
|
|
// ensuring 4-byte boundary
|
|
p += ((nixSize+3) & (~3)) / 4;
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// no nix vector, set zero length,
|
|
// ie 4-bytes, since it must include
|
|
// length for itself
|
|
if (size + 4 <= maxSize)
|
|
{
|
|
size += 4;
|
|
*p++ = 4;
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// Serialize Tags
|
|
// XXX
|
|
|
|
// Serialize Metadata
|
|
uint32_t metaSize = m_metadata.GetSerializedSize ();
|
|
if (size + metaSize <= maxSize)
|
|
{
|
|
// put the total length of metadata in the
|
|
// buffer. this includes 4-bytes for total
|
|
// length itself
|
|
*p++ = metaSize + 4;
|
|
size += metaSize;
|
|
|
|
// serialize the metadata
|
|
uint32_t serialized =
|
|
m_metadata.Serialize (reinterpret_cast<uint8_t *> (p), metaSize);
|
|
if (serialized)
|
|
{
|
|
// increment p by metaSize bytes
|
|
// ensuring 4-byte boundary
|
|
p += ((metaSize+3) & (~3)) / 4;
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
// Serialize the packet contents
|
|
uint32_t bufSize = m_buffer.GetSerializedSize ();
|
|
if (size + bufSize <= maxSize)
|
|
{
|
|
// put the total length of the buffer in the
|
|
// buffer. this includes 4-bytes for total
|
|
// length itself
|
|
*p++ = bufSize + 4;
|
|
size += bufSize;
|
|
|
|
// serialize the buffer
|
|
uint32_t serialized =
|
|
m_buffer.Serialize (reinterpret_cast<uint8_t *> (p), bufSize);
|
|
if (serialized)
|
|
{
|
|
// increment p by bufSize bytes
|
|
// ensuring 4-byte boundary
|
|
p += ((bufSize+3) & (~3)) / 4;
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
// Serialized successfully
|
|
return 1;
|
|
}
|
|
|
|
uint32_t
|
|
Packet::Deserialize (const uint8_t* buffer, uint32_t size)
|
|
{
|
|
NS_LOG_FUNCTION (this);
|
|
|
|
const uint32_t* p = reinterpret_cast<const uint32_t *> (buffer);
|
|
|
|
// read nix-vector
|
|
NS_ASSERT (!m_nixVector);
|
|
uint32_t nixSize = *p++;
|
|
size -= nixSize;
|
|
|
|
// if size less than zero, the buffer
|
|
// will be overrun, assert
|
|
NS_ASSERT (size >= 0);
|
|
|
|
if (nixSize > 4)
|
|
{
|
|
Ptr<NixVector> nix = CreateObject<NixVector> ();
|
|
uint32_t nixDeserialized = nix->Deserialize (p, nixSize);
|
|
if (!nixDeserialized)
|
|
{
|
|
// nix-vector not deserialized
|
|
// completely
|
|
return 0;
|
|
}
|
|
m_nixVector = nix;
|
|
// increment p by nixSize ensuring
|
|
// 4-byte boundary
|
|
p += ((((nixSize - 4) + 3) & (~3)) / 4);
|
|
}
|
|
|
|
// read tags
|
|
//XXX
|
|
//uint32_t tagsDeserialized = m_tags.Deserialize (buffer.Begin ());
|
|
//buffer.RemoveAtStart (tagsDeserialized);
|
|
|
|
// read metadata
|
|
uint32_t metaSize = *p++;
|
|
size -= metaSize;
|
|
|
|
// if size less than zero, the buffer
|
|
// will be overrun, assert
|
|
NS_ASSERT (size >= 0);
|
|
|
|
uint32_t metadataDeserialized =
|
|
m_metadata.Deserialize (reinterpret_cast<const uint8_t *> (p), metaSize);
|
|
if (!metadataDeserialized)
|
|
{
|
|
// meta-data not deserialized
|
|
// completely
|
|
return 0;
|
|
}
|
|
// increment p by metaSize ensuring
|
|
// 4-byte boundary
|
|
p += ((((metaSize - 4) + 3) & (~3)) / 4);
|
|
|
|
// read buffer contents
|
|
uint32_t bufSize = *p++;
|
|
size -= bufSize;
|
|
|
|
// if size less than zero, the buffer
|
|
// will be overrun, assert
|
|
NS_ASSERT (size >= 0);
|
|
|
|
uint32_t bufferDeserialized =
|
|
m_buffer.Deserialize (reinterpret_cast<const uint8_t *> (p), bufSize);
|
|
if (!bufferDeserialized)
|
|
{
|
|
// buffer not deserialized
|
|
// completely
|
|
return 0;
|
|
}
|
|
|
|
// return zero if did not deserialize the
|
|
// number of expected bytes
|
|
return (size == 0);
|
|
}
|
|
|
|
void
|
|
Packet::AddByteTag (const Tag &tag) const
|
|
{
|
|
NS_LOG_FUNCTION (this << tag.GetInstanceTypeId ().GetName () << tag.GetSerializedSize ());
|
|
ByteTagList *list = const_cast<ByteTagList *> (&m_byteTagList);
|
|
TagBuffer buffer = list->Add (tag.GetInstanceTypeId (), tag.GetSerializedSize (),
|
|
m_buffer.GetCurrentStartOffset (),
|
|
m_buffer.GetCurrentEndOffset ());
|
|
tag.Serialize (buffer);
|
|
}
|
|
ByteTagIterator
|
|
Packet::GetByteTagIterator (void) const
|
|
{
|
|
return ByteTagIterator (m_byteTagList.Begin (m_buffer.GetCurrentStartOffset (), m_buffer.GetCurrentEndOffset ()));
|
|
}
|
|
|
|
bool
|
|
Packet::FindFirstMatchingByteTag (Tag &tag) const
|
|
{
|
|
TypeId tid = tag.GetInstanceTypeId ();
|
|
ByteTagIterator i = GetByteTagIterator ();
|
|
while (i.HasNext ())
|
|
{
|
|
ByteTagIterator::Item item = i.Next ();
|
|
if (tid == item.GetTypeId ())
|
|
{
|
|
item.GetTag (tag);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
Packet::AddPacketTag (const Tag &tag) const
|
|
{
|
|
NS_LOG_FUNCTION (this << tag.GetInstanceTypeId ().GetName () << tag.GetSerializedSize ());
|
|
m_packetTagList.Add (tag);
|
|
}
|
|
bool
|
|
Packet::RemovePacketTag (Tag &tag)
|
|
{
|
|
NS_LOG_FUNCTION (this << tag.GetInstanceTypeId ().GetName () << tag.GetSerializedSize ());
|
|
bool found = m_packetTagList.Remove (tag);
|
|
return found;
|
|
}
|
|
bool
|
|
Packet::PeekPacketTag (Tag &tag) const
|
|
{
|
|
bool found = m_packetTagList.Peek (tag);
|
|
return found;
|
|
}
|
|
void
|
|
Packet::RemoveAllPacketTags (void)
|
|
{
|
|
NS_LOG_FUNCTION (this);
|
|
m_packetTagList.RemoveAll ();
|
|
}
|
|
|
|
void
|
|
Packet::PrintPacketTags (std::ostream &os) const
|
|
{
|
|
PacketTagIterator i = GetPacketTagIterator ();
|
|
while (i.HasNext ())
|
|
{
|
|
PacketTagIterator::Item item = i.Next ();
|
|
NS_ASSERT (item.GetTypeId ().HasConstructor ());
|
|
Callback<ObjectBase *> constructor = item.GetTypeId ().GetConstructor ();
|
|
NS_ASSERT (!constructor.IsNull ());
|
|
ObjectBase *instance = constructor ();
|
|
Tag *tag = dynamic_cast<Tag *> (instance);
|
|
NS_ASSERT (tag != 0);
|
|
item.GetTag (*tag);
|
|
tag->Print (os);
|
|
delete tag;
|
|
if (i.HasNext ())
|
|
{
|
|
os << " ";
|
|
}
|
|
}
|
|
}
|
|
|
|
PacketTagIterator
|
|
Packet::GetPacketTagIterator (void) const
|
|
{
|
|
return PacketTagIterator (m_packetTagList.Head ());
|
|
}
|
|
|
|
std::ostream& operator<< (std::ostream& os, const Packet &packet)
|
|
{
|
|
packet.Print (os);
|
|
return os;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Unit tests
|
|
//-----------------------------------------------------------------------------
|
|
namespace {
|
|
|
|
class ATestTagBase : public Tag
|
|
{
|
|
public:
|
|
ATestTagBase () : m_error (false) {}
|
|
bool m_error;
|
|
};
|
|
|
|
template <int N>
|
|
class ATestTag : public ATestTagBase
|
|
{
|
|
public:
|
|
static TypeId GetTypeId (void) {
|
|
std::ostringstream oss;
|
|
oss << "anon::ATestTag<" << N << ">";
|
|
static TypeId tid = TypeId (oss.str ().c_str ())
|
|
.SetParent<Tag> ()
|
|
.AddConstructor<ATestTag<N> > ()
|
|
.HideFromDocumentation ()
|
|
;
|
|
return tid;
|
|
}
|
|
virtual TypeId GetInstanceTypeId (void) const {
|
|
return GetTypeId ();
|
|
}
|
|
virtual uint32_t GetSerializedSize (void) const {
|
|
return N;
|
|
}
|
|
virtual void Serialize (TagBuffer buf) const {
|
|
for (uint32_t i = 0; i < N; ++i)
|
|
{
|
|
buf.WriteU8 (N);
|
|
}
|
|
}
|
|
virtual void Deserialize (TagBuffer buf) {
|
|
for (uint32_t i = 0; i < N; ++i)
|
|
{
|
|
uint8_t v = buf.ReadU8 ();
|
|
if (v != N)
|
|
{
|
|
m_error = true;
|
|
}
|
|
}
|
|
}
|
|
virtual void Print (std::ostream &os) const {
|
|
os << N;
|
|
}
|
|
ATestTag ()
|
|
: ATestTagBase () {}
|
|
};
|
|
|
|
class ATestHeaderBase : public Header
|
|
{
|
|
public:
|
|
ATestHeaderBase () : Header (), m_error (false) {}
|
|
bool m_error;
|
|
};
|
|
|
|
template <int N>
|
|
class ATestHeader : public ATestHeaderBase
|
|
{
|
|
public:
|
|
static TypeId GetTypeId (void) {
|
|
std::ostringstream oss;
|
|
oss << "anon::ATestHeader<" << N << ">";
|
|
static TypeId tid = TypeId (oss.str ().c_str ())
|
|
.SetParent<Header> ()
|
|
.AddConstructor<ATestHeader<N> > ()
|
|
.HideFromDocumentation ()
|
|
;
|
|
return tid;
|
|
}
|
|
virtual TypeId GetInstanceTypeId (void) const {
|
|
return GetTypeId ();
|
|
}
|
|
virtual uint32_t GetSerializedSize (void) const {
|
|
return N;
|
|
}
|
|
virtual void Serialize (Buffer::Iterator iter) const {
|
|
for (uint32_t i = 0; i < N; ++i)
|
|
{
|
|
iter.WriteU8 (N);
|
|
}
|
|
}
|
|
virtual uint32_t Deserialize (Buffer::Iterator iter) {
|
|
for (uint32_t i = 0; i < N; ++i)
|
|
{
|
|
uint8_t v = iter.ReadU8 ();
|
|
if (v != N)
|
|
{
|
|
m_error = true;
|
|
}
|
|
}
|
|
return N;
|
|
}
|
|
virtual void Print (std::ostream &os) const {
|
|
}
|
|
ATestHeader ()
|
|
: ATestHeaderBase () {}
|
|
|
|
};
|
|
|
|
class ATestTrailerBase : public Trailer
|
|
{
|
|
public:
|
|
ATestTrailerBase () : Trailer (), m_error (false) {}
|
|
bool m_error;
|
|
};
|
|
|
|
template <int N>
|
|
class ATestTrailer : public ATestTrailerBase
|
|
{
|
|
public:
|
|
static TypeId GetTypeId (void) {
|
|
std::ostringstream oss;
|
|
oss << "anon::ATestTrailer<" << N << ">";
|
|
static TypeId tid = TypeId (oss.str ().c_str ())
|
|
.SetParent<Header> ()
|
|
.AddConstructor<ATestTrailer<N> > ()
|
|
.HideFromDocumentation ()
|
|
;
|
|
return tid;
|
|
}
|
|
virtual TypeId GetInstanceTypeId (void) const {
|
|
return GetTypeId ();
|
|
}
|
|
virtual uint32_t GetSerializedSize (void) const {
|
|
return N;
|
|
}
|
|
virtual void Serialize (Buffer::Iterator iter) const {
|
|
iter.Prev (N);
|
|
for (uint32_t i = 0; i < N; ++i)
|
|
{
|
|
iter.WriteU8 (N);
|
|
}
|
|
}
|
|
virtual uint32_t Deserialize (Buffer::Iterator iter) {
|
|
iter.Prev (N);
|
|
for (uint32_t i = 0; i < N; ++i)
|
|
{
|
|
uint8_t v = iter.ReadU8 ();
|
|
if (v != N)
|
|
{
|
|
m_error = true;
|
|
}
|
|
}
|
|
return N;
|
|
}
|
|
virtual void Print (std::ostream &os) const {
|
|
}
|
|
ATestTrailer ()
|
|
: ATestTrailerBase () {}
|
|
|
|
};
|
|
|
|
|
|
struct Expected
|
|
{
|
|
Expected (uint32_t n_, uint32_t start_, uint32_t end_)
|
|
: n (n_), start (start_), end (end_) {}
|
|
|
|
uint32_t n;
|
|
uint32_t start;
|
|
uint32_t end;
|
|
};
|
|
|
|
}
|
|
|
|
// tag name, start, end
|
|
#define E(a,b,c) a,b,c
|
|
|
|
#define CHECK(p, n, ...) \
|
|
DoCheck (p, __FILE__, __LINE__, n, __VA_ARGS__)
|
|
|
|
class PacketTest: public TestCase
|
|
{
|
|
public:
|
|
PacketTest ();
|
|
virtual bool DoRun (void);
|
|
private:
|
|
void DoCheck (Ptr<const Packet> p, const char *file, int line, uint32_t n, ...);
|
|
};
|
|
|
|
|
|
PacketTest::PacketTest ()
|
|
: TestCase ("Packet") {}
|
|
|
|
void
|
|
PacketTest::DoCheck (Ptr<const Packet> p, const char *file, int line, uint32_t n, ...)
|
|
{
|
|
std::vector<struct Expected> expected;
|
|
va_list ap;
|
|
va_start (ap, n);
|
|
for (uint32_t k = 0; k < n; ++k)
|
|
{
|
|
uint32_t N = va_arg (ap, uint32_t);
|
|
uint32_t start = va_arg (ap, uint32_t);
|
|
uint32_t end = va_arg (ap, uint32_t);
|
|
expected.push_back (Expected (N, start, end));
|
|
}
|
|
va_end (ap);
|
|
|
|
ByteTagIterator i = p->GetByteTagIterator ();
|
|
uint32_t j = 0;
|
|
while (i.HasNext () && j < expected.size ())
|
|
{
|
|
ByteTagIterator::Item item = i.Next ();
|
|
struct Expected e = expected[j];
|
|
std::ostringstream oss;
|
|
oss << "anon::ATestTag<" << e.n << ">";
|
|
NS_TEST_EXPECT_MSG_EQ_INTERNAL (item.GetTypeId ().GetName (), oss.str (), "trivial", file, line);
|
|
NS_TEST_EXPECT_MSG_EQ_INTERNAL (item.GetStart (), e.start, "trivial", file, line);
|
|
NS_TEST_EXPECT_MSG_EQ_INTERNAL (item.GetEnd (), e.end, "trivial", file, line);
|
|
ATestTagBase *tag = dynamic_cast<ATestTagBase *> (item.GetTypeId ().GetConstructor () ());
|
|
NS_TEST_EXPECT_MSG_NE (tag, 0, "trivial");
|
|
item.GetTag (*tag);
|
|
NS_TEST_EXPECT_MSG_EQ (tag->m_error, false, "trivial");
|
|
delete tag;
|
|
j++;
|
|
}
|
|
NS_TEST_EXPECT_MSG_EQ (i.HasNext (), false, "Nothing left");
|
|
NS_TEST_EXPECT_MSG_EQ (j, expected.size (), "Size match");
|
|
}
|
|
|
|
bool
|
|
PacketTest::DoRun (void)
|
|
{
|
|
Ptr<Packet> pkt1 = Create<Packet> (reinterpret_cast<const uint8_t*> ("hello"), 5);
|
|
Ptr<Packet> pkt2 = Create<Packet> (reinterpret_cast<const uint8_t*> (" world"), 6);
|
|
Ptr<Packet> packet = Create<Packet> ();
|
|
packet->AddAtEnd (pkt1);
|
|
packet->AddAtEnd (pkt2);
|
|
|
|
NS_TEST_EXPECT_MSG_EQ (packet->GetSize (), 11, "trivial");
|
|
|
|
std::string msg = std::string (reinterpret_cast<const char *>(packet->PeekData ()),
|
|
packet->GetSize ());
|
|
NS_TEST_EXPECT_MSG_EQ (msg, "hello world", "trivial");
|
|
|
|
|
|
Ptr<const Packet> p = Create<Packet> (1000);
|
|
|
|
p->AddByteTag (ATestTag<1> ());
|
|
CHECK (p, 1, E (1, 0, 1000));
|
|
Ptr<const Packet> copy = p->Copy ();
|
|
CHECK (copy, 1, E (1, 0, 1000));
|
|
|
|
p->AddByteTag (ATestTag<2> ());
|
|
CHECK (p, 2, E (1, 0, 1000), E(2, 0, 1000));
|
|
CHECK (copy, 1, E (1, 0, 1000));
|
|
|
|
{
|
|
Packet c0 = *copy;
|
|
Packet c1 = *copy;
|
|
c0 = c1;
|
|
CHECK (&c0, 1, E (1, 0, 1000));
|
|
CHECK (&c1, 1, E (1, 0, 1000));
|
|
CHECK (copy, 1, E (1, 0, 1000));
|
|
c0.AddByteTag (ATestTag<10> ());
|
|
CHECK (&c0, 2, E (1, 0, 1000), E (10, 0, 1000));
|
|
CHECK (&c1, 1, E (1, 0, 1000));
|
|
CHECK (copy, 1, E (1, 0, 1000));
|
|
}
|
|
|
|
Ptr<Packet> frag0 = p->CreateFragment (0, 10);
|
|
Ptr<Packet> frag1 = p->CreateFragment (10, 90);
|
|
Ptr<const Packet> frag2 = p->CreateFragment (100, 900);
|
|
frag0->AddByteTag (ATestTag<3> ());
|
|
CHECK (frag0, 3, E (1, 0, 10), E(2, 0, 10), E (3, 0, 10));
|
|
frag1->AddByteTag (ATestTag<4> ());
|
|
CHECK (frag1, 3, E (1, 0, 90), E(2, 0, 90), E (4, 0, 90));
|
|
frag2->AddByteTag (ATestTag<5> ());
|
|
CHECK (frag2, 3, E (1, 0, 900), E(2, 0, 900), E (5, 0, 900));
|
|
|
|
frag1->AddAtEnd (frag2);
|
|
CHECK (frag1, 6, E (1, 0, 90), E(2, 0, 90), E (4, 0, 90), E (1, 90, 990), E(2, 90, 990), E (5, 90, 990));
|
|
|
|
CHECK (frag0, 3, E (1, 0, 10), E(2, 0, 10), E (3, 0, 10));
|
|
frag0->AddAtEnd (frag1);
|
|
CHECK (frag0, 9,
|
|
E (1, 0, 10), E(2, 0, 10), E (3, 0, 10),
|
|
E (1, 10, 100), E(2, 10, 100), E (4, 10, 100),
|
|
E (1, 100, 1000), E(2, 100, 1000), E (5, 100, 1000));
|
|
|
|
|
|
// force caching a buffer of the right size.
|
|
frag0 = Create<Packet> (1000);
|
|
frag0->AddHeader (ATestHeader<10> ());
|
|
frag0 = 0;
|
|
|
|
p = Create<Packet> (1000);
|
|
p->AddByteTag (ATestTag<20> ());
|
|
CHECK (p, 1, E (20, 0, 1000));
|
|
frag0 = p->CreateFragment (10, 90);
|
|
CHECK (p, 1, E (20, 0, 1000));
|
|
CHECK (frag0, 1, E (20, 0, 90));
|
|
p = 0;
|
|
frag0->AddHeader (ATestHeader<10> ());
|
|
CHECK (frag0, 1, E (20, 10, 100));
|
|
|
|
{
|
|
Ptr<Packet> tmp = Create<Packet> (100);
|
|
tmp->AddByteTag (ATestTag<20> ());
|
|
CHECK (tmp, 1, E (20, 0, 100));
|
|
tmp->AddHeader (ATestHeader<10> ());
|
|
CHECK (tmp, 1, E (20, 10, 110));
|
|
ATestHeader<10> h;
|
|
tmp->RemoveHeader (h);
|
|
CHECK (tmp, 1, E (20, 0, 100));
|
|
tmp->AddHeader (ATestHeader<10> ());
|
|
CHECK (tmp, 1, E (20, 10, 110));
|
|
|
|
tmp = Create<Packet> (100);
|
|
tmp->AddByteTag (ATestTag<20> ());
|
|
CHECK (tmp, 1, E (20, 0, 100));
|
|
tmp->AddTrailer (ATestTrailer<10> ());
|
|
CHECK (tmp, 1, E (20, 0, 100));
|
|
ATestTrailer<10> t;
|
|
tmp->RemoveTrailer (t);
|
|
CHECK (tmp, 1, E (20, 0, 100));
|
|
tmp->AddTrailer (ATestTrailer<10> ());
|
|
CHECK (tmp, 1, E (20, 0, 100));
|
|
|
|
}
|
|
|
|
{
|
|
Ptr<Packet> tmp = Create<Packet> (0);
|
|
tmp->AddHeader (ATestHeader<156> ());
|
|
tmp->AddByteTag (ATestTag<20> ());
|
|
CHECK (tmp, 1, E (20, 0, 156));
|
|
tmp->RemoveAtStart (120);
|
|
CHECK (tmp, 1, E (20, 0, 36));
|
|
Ptr<Packet> a = Create<Packet> (0);
|
|
a->AddAtEnd (tmp);
|
|
CHECK (a, 1, E (20, 0, 36));
|
|
}
|
|
|
|
{
|
|
Ptr<Packet> tmp = Create<Packet> (0);
|
|
tmp->AddByteTag (ATestTag<20> ());
|
|
CHECK (tmp, 0, E (20, 0, 0));
|
|
}
|
|
{
|
|
Ptr<Packet> tmp = Create<Packet> (1000);
|
|
tmp->AddByteTag (ATestTag<20> ());
|
|
CHECK (tmp, 1, E (20, 0, 1000));
|
|
tmp->RemoveAtStart (1000);
|
|
CHECK (tmp, 0, E (0,0,0));
|
|
Ptr<Packet> a = Create<Packet> (10);
|
|
a->AddByteTag (ATestTag<10> ());
|
|
CHECK (a, 1, E (10, 0, 10));
|
|
tmp->AddAtEnd (a);
|
|
CHECK (tmp, 1, E (10, 0, 10));
|
|
}
|
|
|
|
{
|
|
Packet p;
|
|
ATestTag<10> a;
|
|
p.AddPacketTag (a);
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (a), true, "trivial");
|
|
ATestTag<11> b;
|
|
p.AddPacketTag (b);
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (b), true, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (a), true, "trivial");
|
|
Packet copy = p;
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (b), true, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (a), true, "trivial");
|
|
ATestTag<12> c;
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (c), false, "trivial");
|
|
copy.AddPacketTag (c);
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (c), true, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (b), true, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (a), true, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (c), false, "trivial");
|
|
copy.RemovePacketTag (b);
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (b), false, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (b), true, "trivial");
|
|
p.RemovePacketTag (a);
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (a), false, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (a), true, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (c), false, "trivial");
|
|
NS_TEST_EXPECT_MSG_EQ (copy.PeekPacketTag (c), true, "trivial");
|
|
p.RemoveAllPacketTags ();
|
|
NS_TEST_EXPECT_MSG_EQ (p.PeekPacketTag (b), false, "trivial");
|
|
}
|
|
|
|
{
|
|
// bug 572
|
|
Ptr<Packet> tmp = Create<Packet> (1000);
|
|
tmp->AddByteTag (ATestTag<20> ());
|
|
CHECK (tmp, 1, E (20, 0, 1000));
|
|
tmp->AddHeader (ATestHeader<2> ());
|
|
CHECK (tmp, 1, E (20, 2, 1002));
|
|
tmp->RemoveAtStart (1);
|
|
CHECK (tmp, 1, E (20, 1, 1001));
|
|
tmp->PeekData ();
|
|
CHECK (tmp, 1, E (20, 1, 1001));
|
|
}
|
|
|
|
return GetErrorStatus ();
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
class PacketTestSuite : public TestSuite
|
|
{
|
|
public:
|
|
PacketTestSuite ();
|
|
};
|
|
|
|
PacketTestSuite::PacketTestSuite ()
|
|
: TestSuite ("packet", UNIT)
|
|
{
|
|
AddTestCase (new PacketTest);
|
|
}
|
|
|
|
PacketTestSuite g_packetTestSuite;
|
|
|
|
|
|
} // namespace ns3
|