i_net.h

// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 1998-2000 by DooM Legacy Team.
// Copyright (C) 1999-2021 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file  i_net.h
/// \brief System specific network interface stuff.

#ifndef __I_NET__
#define __I_NET__

#ifdef __GNUG__
#pragma interface
#endif

#include "doomdef.h"
#include "command.h"

/// \brief program net id
#define DOOMCOM_ID (INT32)0x12345678l

/// \def MAXPACKETLENGTH
/// For use in a LAN
#define MAXPACKETLENGTH 1450
/// \def INETPACKETLENGTH
///  For use on the internet
#define INETPACKETLENGTH 1024

extern INT16 hardware_MAXPACKETLENGTH;
extern INT32 net_bandwidth; // in byte/s

#if defined(_MSC_VER)
#pragma pack(1)
#endif

typedef struct
{
	/// Supposed to be DOOMCOM_ID
	INT32 id;

	/// SRB2 executes an INT32 to execute commands.
	INT16 intnum;
	/// Communication between SRB2 and the driver.
	/// Is CMD_SEND or CMD_GET.
	INT16 command;
	/// Is dest for send, set by get (-1 = no packet).
	INT16 remotenode;

	/// Number of bytes in doomdata to be sent
	INT16 datalength;

	/// Info common to all nodes.
	/// Console is always node 0.
	INT16 numnodes;
	/// Flag: 1 = no duplication, 2-5 = dup for slow nets.
	INT16 ticdup;
	/// Flag: 1 = send a backup tic in every packet.
	INT16 extratics;
	/// kind of game
	INT16 gametype;
	/// Flag: -1 = new game, 0-5 = load savegame
	INT16 savegame;
	/// currect map
	INT16 map;

	/// Info specific to this node.
	INT16 consoleplayer;
	/// Number of "slots": the highest player number in use plus one.
	INT16 numslots;

	/// The packet data to be sent.
	char data[MAXPACKETLENGTH];
} ATTRPACK doomcom_t;

#if defined(_MSC_VER)
#pragma pack()
#endif

extern doomcom_t *doomcom;

/**	\brief return packet in doomcom struct
*/
extern boolean (*I_NetGet)(void);

/**	\brief ask to driver if there is data waiting
*/
extern boolean (*I_NetCanGet)(void);

/**	\brief send packet within doomcom struct
*/
extern void (*I_NetSend)(void);

/**	\brief ask to driver if all is ok to send data now
*/
extern boolean (*I_NetCanSend)(void);

/**	\brief	close a connection

	\param	nodenum	node to be closed

	\return	void


*/
extern void (*I_NetFreeNodenum)(INT32 nodenum);

/**	\brief	open a connection with specified address

	\param	address	address to connect to

	\return	number of node


*/
extern SINT8 I_NetMakeNode(const char *address);

/**	\brief	open a connection with specified address and port

	\param	address	address to connect to

	\param	port	port to connect to

	\return	number of node


*/
extern SINT8 (*I_NetMakeNodewPort)(const char *address, const char *port);

/**	\brief open connection
*/
extern boolean (*I_NetOpenSocket)(void);

/**	\brief close all connections no more allow geting any packet
*/
extern void (*I_NetCloseSocket)(void);


extern boolean (*I_Ban) (INT32 node);
extern void (*I_ClearBans)(void);
extern const char *(*I_GetNodeAddress) (INT32 node);
extern const char *(*I_GetBanAddress) (size_t ban);
extern const char *(*I_GetBanMask) (size_t ban);
extern boolean (*I_SetBanAddress) (const char *address,const char *mask);
extern boolean *bannednode;

/// \brief Called by D_SRB2Main to be defined by extern network driver
boolean I_InitNetwork(void);

#endif