text: // The MIT License (MIT)
  //
  // Copyright (c) 2014-2016 Brno University of Technology, PRISTINE project
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  #ifndef SDU_H_
  #define SDU_H_
  
  #include <omnetpp.h>
  #include <vector>
  #include "EFCP_defs.h"
  #include "CDAPMessage_m.h"
  #include "SDU_m.h"
  
  
  
  #define SDU_SEQ_NUM_PRESENT 0x08
  #define SDU_NO_LENGTH 0x04
  #define SDU_NO_L_MID_FRAG 0x00
  #define SDU_NO_L_FIRST_FRAG 0x01
  #define SDU_NO_L_LAST_FRAG 0x02
  #define SDU_NO_L_ONE_SDU 0x03
  
  #define SDU_L_COMP_SDU 0x00 /* It may express ZERO or more complete SDUs*/
  #define SDU_L_SDU_FIRST_FRAG 0x01
  #define SDU_L_LAST_FRAG_SDU 0x02
  #define SDU_L_LAST_SDU_FIRST_FRAG 0x03 /* Last fragment, ZERO or more SDUs followed by first fragment */
  
  typedef std::vector<cPacket*> mUserDataType;
  class SDU : public SDU_Base
  {
  
    private:
  //    unsigned char * userData; //Deprecated
  //    unsigned int size;
  //    unsigned int offset;
      mUserDataType mUserData_var;
  
      void copy(const SDU& other);
  
  public:
  //  SDU();
    virtual ~SDU();
  
      SDU(const char *name=NULL, int kind=0);
      SDU(const SDU& other); // : SDU_Base(other) {copy(other);}
      SDU& operator=(const SDU& other)
      {
        if (this == &other)
          return *this;
        SDU_Base::operator=(other);
        copy(other);
        return *this;
      }
      virtual SDU *dup() const {return new SDU(*this);}
  
  
      unsigned int getSize() const;
      unsigned int getAbsoluteSize() const;
      unsigned int getRestSize() const;
  
      bool addUserData(cPacket* msg);
      cPacket* getUserData();
  
      std::vector<SDU*>fragment(unsigned int size);
      SDU* genFragment(unsigned int size, unsigned int fSeqNum, unsigned int fOffset);
      void setFragment(unsigned int size, unsigned int fSeqNum, unsigned int fOffset);
  
  
  };
  
  #endif /* SDU_H_ */
  