encap_header.h

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#ifndef ODVA_ETHERNETIP_ENCAP_HEADER_H
#define ODVA_ETHERNETIP_ENCAP_HEADER_H

#include <iostream>
#include "odva_ethernetip/eip_types.h"
#include "odva_ethernetip/serialization/reader.h"
#include "odva_ethernetip/serialization/writer.h"
#include "odva_ethernetip/serialization/serializable.h"

namespace eip {

using serialization::Serializable;
using serialization::Reader;
using serialization::Writer;

class EncapHeader : public Serializable
{
public:
  EIP_UINT  command;
  EIP_UINT  length;
  EIP_UDINT session_handle;
  EIP_DWORD status;
  EIP_DWORD context[2];
  EIP_DWORD options;

  EncapHeader(EIP_UINT cmd = 0, EIP_UDINT handle = 0)
    : command(cmd), length(0), session_handle(handle), status(0), options(0)
  {
    context[0] = 0;
    context[1] = 0;
  }

  virtual size_t getLength() const
  {
    return 24;
  }

  virtual Writer& serialize(Writer& writer) const;

  virtual Reader& deserialize(Reader& reader, size_t length)
  {
    if (getLength() != length)
    {
      throw std::length_error("Invalid length given for encapsulation packet header");
    }
    deserialize(reader);
    return reader;
  }

  virtual Reader& deserialize(Reader& reader);
};

} // namespace eip

#endif  // ODVA_ETHERNETIP_ENCAP_HEADER_H