/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
*	
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO 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 3 of the License, or
* (at your option) any later version.
*	
* DOUBANGO 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 DOUBANGO.
*
*/

/**@file tnet_turn_message.h
 * @brief Traversal Using Relays around NAT (TURN) messages.
 *
 * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
 *

 */
#ifndef TNET_TURN_MESSAGE_H
#define TNET_TURN_MESSAGE_H

#include "../tinynet_config.h"

#include "tsk_buffer.h"

TNET_BEGIN_DECLS

/**@ingroup tnet_turn_group
 * TURN channel data message as per draft-ietf-behave-turn-16 subclause 11.4.
*/
typedef struct tnet_turn_channel_data_s
{
	TSK_DECLARE_OBJECT;

	/*	draft-ietf-behave-turn-16 11.4.  The ChannelData Message
		0                   1                   2                   3
		0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		|         Channel Number        |            Length             |
		+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
		|                                                               |
		/                       Application Data                        /
		/                                                               /
		|                                                               |
		|                               +-------------------------------+
		|                               |
		+-------------------------------+
	*/
	uint16_t chanel_number;
	uint16_t length;
	void* data;
}
tnet_turn_channel_data_t;

tsk_buffer_t* tnet_turn_channel_data_serialize(const tnet_turn_channel_data_t *message);

tnet_turn_channel_data_t* tnet_turn_channel_data_create(uint16_t number, uint16_t length, const void* data);
tnet_turn_channel_data_t* tnet_turn_channel_data_create_null();

TINYNET_GEXTERN const tsk_object_def_t *tnet_turn_channel_data_def_t;

TNET_END_DECLS

#endif /* TNET_TURN_MESSAGE_H */
