MessageHeader.hpp 1.76 KB
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/******************************************************************************
 *
 * This file is part of the Castor project.
 * See http://castor.web.cern.ch/castor
 *
 * Copyright (C) 2003  CERN
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 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.
 *
 *
 * 
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 * @author Castor Dev team, castor-dev@cern.ch
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 *****************************************************************************/

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#pragma once
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#include <stdint.h>

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namespace castor {
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namespace legacymsg {
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/**
 * A message header
 */
struct MessageHeader {
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  /**
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   * The magic number of the message.
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   */
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  uint32_t magic;
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  /**
   * The request type of the message.
   */
  uint32_t reqType;
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  /**
   * The length of the message body in bytes if this is the header of any
   * message other than an acknowledge message.  If this is the header of
   * an acknowledge message then there is no message body and this field is
   * used to pass the status of the acknowledge.
   */
  uint32_t lenOrStatus;

  /**
   * Constructor.
   *
   * Sets all integer member-variables to 0.
   */
  MessageHeader() throw();
}; // struct MessageHeader
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} // namespace legacymsg
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} // namespace castor