/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others
Copyright (C) 2009-2010 Ozkan Sezer
Copyright (C) 2010-2014 QuakeSpasm developers
Copyright (C) 2020-2021 Vittorio Romeo

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.

*/

/*
    net.h
    quake's interface to the networking layer
    network functions and data, common to the
    whole engine
*/

#pragma once

#include "cvar.hpp"
#include "common.hpp"
#include "sizebuf.hpp"

#define NET_NAMELEN 64

#define NET_MAXMESSAGE 65535 /* ericw -- was 32000 */

extern int DEFAULTnet_hostport;
extern int net_hostport;

extern cvar_t hostname;

extern double net_time;
extern sizebuf_t net_message;
extern int net_activeconnections;

// QSS
typedef char qhostaddr_t[NET_NAMELEN];

void NET_Init();
void NET_Shutdown();

struct qsocket_s* NET_CheckNewConnections();
// returns a new connection number if there is one pending, else -1

struct qsocket_s* NET_Connect(const char* host);
// called by client to connect to a host.  Returns -1 if not able to

double NET_QSocketGetTime(const struct qsocket_s* sock);

// QSS
const char* NET_QSocketGetTrueAddressString(const struct qsocket_s* sock);
const char* NET_QSocketGetMaskedAddressString(const struct qsocket_s* sock);
bool NET_QSocketGetProQuakeAngleHack(const struct qsocket_s* sock);
int NET_QSocketGetSequenceIn(const struct qsocket_s* sock);
int NET_QSocketGetSequenceOut(const struct qsocket_s* sock);
void NET_QSocketSetMSS(struct qsocket_s* s, int mss);

bool NET_CanSendMessage(struct qsocket_s* sock);
// Returns true or false if the given qsocket can currently accept a
// message to be transmitted.

// QSS
struct qsocket_s* NET_GetServerMessage();
// returns data in net_message, qsocket says which client its from

// QSS
int NET_ListAddresses(qhostaddr_t* addresses, int maxaddresses);
// gets a list of public addresses.

int NET_GetMessage(struct qsocket_s* sock);
// returns data in net_message sizebuf
// returns 0 if no data is waiting
// returns 1 if a message was received
// returns 2 if an unreliable message was received
// returns -1 if the connection died

int NET_SendMessage(struct qsocket_s* sock, sizebuf_t* data);
int NET_SendUnreliableMessage(struct qsocket_s* sock, sizebuf_t* data);
// returns 0 if the message connot be delivered reliably, but the connection
//		is still considered valid
// returns 1 if the message was sent properly
// returns -1 if the connection died

int NET_SendToAll(sizebuf_t* data, double blocktime);
// This is a reliable *blocking* send to all attached clients.

void NET_Close(struct qsocket_s* sock);
// if a dead connection is returned by a get or send function, this function
// should be called when it is convenient

// Server calls when a client is kicked off for a game related misbehavior
// like an illegal protocal conversation.  Client calls when disconnecting
// from a server.
// A netcon_t number will not be reused until this function is called for it

void NET_Poll();


// Server list related globals:
extern bool slistInProgress;
extern bool slistSilent;

// QSS
extern enum slistScope_e { SLIST_LOOP, SLIST_LAN, SLIST_INTERNET } slistScope;
extern size_t hostCacheCount;

void NET_Slist_f();
void NET_SlistSort();

// QSS
const char* NET_SlistPrintServer(size_t n);
const char* NET_SlistPrintServerName(size_t n);



/* FIXME: driver related, but public:
 */
// QSS
extern bool ipxAvailable;
extern bool ipv4Available;
extern bool ipv6Available;
extern char my_ipx_address[NET_NAMELEN];
extern char my_ipv4_address[NET_NAMELEN];
extern char my_ipv6_address[NET_NAMELEN];
