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/*
 * LAN discovery implementation.
 */

/*
 * Copyright © 2016-2017 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"

/* Interval in seconds between LAN discovery packet sending. */
#define LAN_DISCOVERY_INTERVAL 10

/* Send a LAN discovery pcaket to the broadcast address with port port. */
int send_LANdiscovery(uint16_t port, DHT *dht);

/* Sets up packet handlers. */
void LANdiscovery_init(DHT *dht);

/* Clear packet handlers. */
void LANdiscovery_kill(DHT *dht);

/* Is IP a local ip or not. */
bool Local_ip(IP ip);

/* checks if a given IP isn't routable
 *
 *  return 0 if ip is a LAN ip.
 *  return -1 if it is not.
 */
int LAN_ip(IP ip);


#endif