rr_data.cpp

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#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>

#include "odva_ethernetip/rr_data.h"
#include "odva_ethernetip/cpf_packet.h"
#include "odva_ethernetip/cpf_item.h"

using boost::shared_ptr;
using boost::make_shared;

namespace eip {

Writer& RRData::serialize(Writer& writer) const
{
  writer.write(interface_handle);
  writer.write(timeout);
  CPFPacket pkt;
  pkt.getItems().push_back(CPFItem());
  pkt.getItems().push_back(CPFItem(EIP_ITEM_UNCONNECTED_MESSAGE, getData()));
  pkt.serialize(writer);
  return writer;
}

Reader& RRData::deserialize(Reader& reader)
{
  reader.read(interface_handle);
  reader.read(timeout);
  CPFPacket pkt;
  pkt.deserialize(reader);

  // check that CPF items are correct
  if (pkt.getItemCount() < 2)
  {
    throw std::logic_error("Not enough items in RR Data");
  }
  if (pkt.getItemCount() > 2)
  {
    std::cout << "Warning: more than 2 items in RR data response" << std::endl;
  }
  if (pkt.getItems().at(0).getItemType() != EIP_ITEM_NULL)
  {
    throw std::logic_error("Address other than null in RR Data");
  }
  if (pkt.getItems().at(0).getDataLength() != 0)
  {
    throw std::logic_error("Data length greater than zero in null address type");
  }

  if (pkt.getItems().at(1).getItemType() != EIP_ITEM_UNCONNECTED_MESSAGE)
  {
    throw std::logic_error("Unexpected data type in RR Data");
  }

  setData(pkt.getItems().at(1));
  return reader;
}

} // namespace eip