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/*
* LAN discovery implementation.
*/
/*
* Copyright © 2016-2018 The TokTok team.
* Copyright © 2013 Tox project.
*
* This file is part of Tox, the free peer to peer instant messenger.
*
* Tox 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.
*
* Tox 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 Tox. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LAN_DISCOVERY_H
#define LAN_DISCOVERY_H
#include "DHT.h"
#ifndef DHT_DEFINED
#define DHT_DEFINED
typedef struct DHT DHT;
#endif /* DHT_DEFINED */
#ifndef IP_DEFINED
#define IP_DEFINED
typedef struct IP IP;
#endif /* IP_DEFINED */
/**
* Interval in seconds between LAN discovery packet sending.
*/
#define LAN_DISCOVERY_INTERVAL 10
uint32_t lan_discovery_interval(void);
/**
* Send a LAN discovery pcaket to the broadcast address with port port.
*/
int32_t lan_discovery_send(uint16_t port, DHT *dht);
/**
* Sets up packet handlers.
*/
void lan_discovery_init(DHT *dht);
/**
* Clear packet handlers.
*/
void lan_discovery_kill(DHT *dht);
/**
* Is IP a local ip or not.
*/
bool ip_is_local(IP ip);
/**
* checks if a given IP isn't routable
*
* return 0 if ip is a LAN ip.
* return -1 if it is not.
*/
int32_t ip_is_lan(IP ip);
#endif
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