/*
 * Usurpation – network logic
 *
 * Copyright (C) 2019 Gediminas Jakutis
 * Copyright (C) 2019 Paulius Ratkevičius
 *
 * 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; version 2.1
 * of the License.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifndef USURPATION_NET_H_INCLUDED
#define USURPATION_NET_H_INCLUDED

#define MTU 1500

enum response {
	ERROR = -1,
	A_OK = 0, /* would be "OK", but clashes with some lib definitions */
	NONEWDATA,
	DEAD,
	NO_ESPTOOL,
	TMPFILE,
};

/**
 * Initialises a listening socket and returns the associated network descriptor.
 */
int net_init(const unsigned short int port);

/**
 * Closes connection associated with network descriptor.
 */
int net_close(int nd);

/**
 * Get last data received from connection associated with network descriptor.
 * If the pointer pointed by data is NULL, a buffer is allocated by the function
 * and needs to be free()'d later. Otherwise, the supplied buffer is reused.
 */
int net_getlastdata(int nd, char ** const data);

#endif /* USURPATION_NET_H_INCLUDED */