/*******************************************************************************
 * libretroshare/src/tcponudp: tcppacket.h                                     *
 *                                                                             *
 * libretroshare: retroshare core library                                      *
 *                                                                             *
 * Copyright 2004-2006 by Robert Fernie <retroshare@lunamutt.com>              *
 *                                                                             *
 * This program is free software: you can redistribute it and/or modify        *
 * it under the terms of the GNU Lesser General Public License as              *
 * published by the Free Software Foundation, either version 3 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 Lesser General Public License for more details.                         *
 *                                                                             *
 * You should have received a copy of the GNU Lesser General Public License    *
 * along with this program. If not, see <https://www.gnu.org/licenses/>.       *
 *                                                                             *
 *******************************************************************************/
#ifndef TOU_TCP_PACKET_H
#define TOU_TCP_PACKET_H

#include <sys/types.h>


typedef unsigned int   uint32;
typedef unsigned short uint16;
typedef unsigned char  uint8;

#define TCP_PSEUDO_HDR_SIZE 20

class TcpPacket
{
	public:

	uint8 *data;
	int   datasize;


	/* ports aren't needed -> in udp 
	 * uint16 srcport, destport
	 **************************/
	uint32 seqno, ackno;
	uint16 hlen_flags;
	uint16 winsize;
	/* don't need these -> in udp + not supported
	uint16 chksum, urgptr; 
	 **************************/
	/* no options.
	 **************************/
	

	/* other variables */
	double  ts; /* transmit time */ 
	uint16  retrans; /* retransmit counter */

	TcpPacket(uint8 *ptr, int size);
	TcpPacket(); /* likely control packet */
	~TcpPacket();

int	writePacket(void *buf, int &size);
int	readPacket(void *buf, int size);

void    *getData();
void    *releaseData();

void    *setData(void *data, int size);
int 	getDataSize();

	/* flags */
bool	hasSyn();
bool 	hasFin();
bool	hasAck();
bool	hasRst();

void    setSyn();
void    setFin();
void    setRst();
void    setAckFlag();

void    setAck(uint32 val);
uint32  getAck();


};


#endif