}

   }

#endif /* DEBUG_LEVEL */

#endif /* DEBUG_LEVEL */

   memcpy(to, packetbuf + hdrptr, PACKETBUF_HDR_SIZE - hdrptr);

   memcpy(to, packetbuf + hdrptr, PACKETBUF_HDR_SIZE - hdrptr);//packetbuf points to the beginning of the buffer array.

   return PACKETBUF_HDR_SIZE - hdrptr;

   return PACKETBUF_HDR_SIZE - hdrptr;

}

}

In the above potion of code, the main line is the following

In the above potion of code, the main line is the following

  memcpy(to, packetbuf + hdrptr, PACKETBUF_HDR_SIZE - hdrptr);

  memcpy(to, packetbuf + hdrptr, PACKETBUF_HDR_SIZE - hdrptr);