three-gpp-http-header.cc

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/*
 * Copyright (c) 2015 Magister Solutions
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Budiarto Herman <budiarto.herman@magister.fi>
 *
 */
 
#include "three-gpp-http-header.h"
 
#include <ns3/log.h>
#include <ns3/packet.h>
 
#include <sstream>
 
NS_LOG_COMPONENT_DEFINE("ThreeGppHttpHeader");
 
namespace ns3
{
 
NS_OBJECT_ENSURE_REGISTERED(ThreeGppHttpHeader);
 
ThreeGppHttpHeader::ThreeGppHttpHeader()
    : Header(),
      m_contentType(NOT_SET),
      m_contentLength(0),
      m_clientTs(0),
      m_serverTs(0)
{
    NS_LOG_FUNCTION(this);
}
 
// static
TypeId
ThreeGppHttpHeader::GetTypeId()
{
    static TypeId tid =
        TypeId("ns3::ThreeGppHttpHeader").SetParent<Header>().AddConstructor<ThreeGppHttpHeader>();
    return tid;
}
 
TypeId
ThreeGppHttpHeader::GetInstanceTypeId() const
{
    return GetTypeId();
}
 
uint32_t
ThreeGppHttpHeader::GetSerializedSize() const
{
    return 2 + 4 + 8 + 8;
}
 
void
ThreeGppHttpHeader::Serialize(Buffer::Iterator start) const
{
    NS_LOG_FUNCTION(this << &start);
    start.WriteU16(m_contentType);
    start.WriteU32(m_contentLength);
    start.WriteU64(m_clientTs);
    start.WriteU64(m_serverTs);
}
 
uint32_t
ThreeGppHttpHeader::Deserialize(Buffer::Iterator start)
{
    NS_LOG_FUNCTION(this << &start);
    uint32_t bytesRead = 0;
 
    // First block of 2 bytes (content type)
    m_contentType = start.ReadU16();
    bytesRead += 2;
 
    // Second block of 4 bytes (content length)
    m_contentLength = start.ReadU32();
    bytesRead += 4;
 
    // Third block of 8 bytes (client time stamp)
    m_clientTs = start.ReadU64();
    bytesRead += 8;
 
    // Fourth block of 8 bytes (server time stamp)
    m_serverTs = start.ReadU64();
    bytesRead += 8;
 
    return bytesRead;
}
 
void
ThreeGppHttpHeader::Print(std::ostream& os) const
{
    NS_LOG_FUNCTION(this << &os);
    os << "(Content-Type: " << m_contentType << " Content-Length: " << m_contentLength
       << " Client TS: " << TimeStep(m_clientTs).As(Time::S)
       << " Server TS: " << TimeStep(m_serverTs).As(Time::S) << ")";
}
 
std::string
ThreeGppHttpHeader::ToString() const
{
    NS_LOG_FUNCTION(this);
    std::ostringstream oss;
    Print(oss);
    return oss.str();
}
 
void
ThreeGppHttpHeader::SetContentType(ThreeGppHttpHeader::ContentType_t contentType)
{
    NS_LOG_FUNCTION(this << static_cast<uint16_t>(contentType));
    switch (contentType)
    {
    case NOT_SET:
        m_contentType = 0;
        break;
    case MAIN_OBJECT:
        m_contentType = 1;
        break;
    case EMBEDDED_OBJECT:
        m_contentType = 2;
        break;
    default:
        NS_FATAL_ERROR("Unknown Content-Type: " << contentType);
        break;
    }
}
 
ThreeGppHttpHeader::ContentType_t
ThreeGppHttpHeader::GetContentType() const
{
    ContentType_t ret;
    switch (m_contentType)
    {
    case 0:
        ret = NOT_SET;
        break;
    case 1:
        ret = MAIN_OBJECT;
        break;
    case 2:
        ret = EMBEDDED_OBJECT;
        break;
    default:
        NS_FATAL_ERROR("Unknown Content-Type: " << m_contentType);
        break;
    }
    return ret;
}
 
void
ThreeGppHttpHeader::SetContentLength(uint32_t contentLength)
{
    NS_LOG_FUNCTION(this << contentLength);
    m_contentLength = contentLength;
}
 
uint32_t
ThreeGppHttpHeader::GetContentLength() const
{
    return m_contentLength;
}
 
void
ThreeGppHttpHeader::SetClientTs(Time clientTs)
{
    NS_LOG_FUNCTION(this << clientTs.As(Time::S));
    m_clientTs = clientTs.GetTimeStep();
}
 
Time
ThreeGppHttpHeader::GetClientTs() const
{
    return TimeStep(m_clientTs);
}
 
void
ThreeGppHttpHeader::SetServerTs(Time serverTs)
{
    NS_LOG_FUNCTION(this << serverTs.As(Time::S));
    m_serverTs = serverTs.GetTimeStep();
}
 
Time
ThreeGppHttpHeader::GetServerTs() const
{
    return TimeStep(m_serverTs);
}
 
} // namespace ns3