/*
* Copyright (c) 2008 Lukas Mejdrech
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup net
* @{
*/
/** @file
*/
#ifndef __NET_PACKET_H__
#define __NET_PACKET_H__
#define PACKET_PREPEND( packet, type ) ( type * ) packet_prepend(( packet ), sizeof( type ))
#define PACKET_APPEND( packet, type ) ( type * ) packet_append(( packet ), sizeof( type ))
#define PACKET_TRIM( packet, prefix, sufix ) packet_trim(( packet ), sizeof( prefix ), sizeof( sufix ))
typedef struct packet * packet_t;
typedef packet_t * packet_ref;
packet_t packet_create( size_t max_prefix, size_t max_content, size_t max_sufix );
void * packet_prepend( packet_t packet, size_t length );
void * packet_append( packet_t packet, size_t length );
packet_t packet_copy( packet_t packet );
int packet_copy_data( packet_t packet, void * data, size_t length );
// TODO protocol identification?
int packet_send( packet_t packet, int phone );
int packet_receive( packet_ref packet );
int packet_trim( packet_t packet, size_t prefix, size_t sufix );
int packet_destroy( packet_t packet );
size_t packet_get_data_length( packet_t packet );
void * packet_get_data( packet_t packet );
#endif
/** @}
*/