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/**
* @file socket.h
*
* @brief management of sockets
*
* receiver reads from here, sender writes to here
*
*/
/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#ifndef SOCKET_H_
#define SOCKET_H_
#include "types.h"
#include "packet.h"
/**
* maximum size of a packet
* 3000 Bytes should be sufficient, see IKEv2 draft
*/
#define MAX_PACKET 3000
/**
* @brief abstraction of one (ipv4), or in future, of multiple sockets
*
*/
typedef struct socket_s socket_t;
struct socket_s {
/**
* @brief receive a packet
*
* reads a packet from one of the sockets.
* source will be set, dest not implemented
*
*
* @param sock socket_t object to work on
* @param packet pinter gets address from allocated packet_t
* @return FAILED when unable to receive
* SUCCESS when packet successfully received
*/
status_t (*receive) (socket_t *sock, packet_t **packet);
/**
* @brief send a packet
*
* sends a packet via desired socket.
* uses source and dest in packet.
*
* @param sock socket_t object to work on
* @param packet[out] packet_t to send
* @return FAILED when unable to send
* SUCCESS when packet successfully sent
*/
status_t (*send) (socket_t *sock, packet_t *packet);
/**
* @brief destroy sockets
*
* close sockets and destroy socket_t object
*
* @param sock socket_t to destroy
* @return SUCCESS
*/
status_t (*destroy) (socket_t *sock);
};
/**
* @brief socket_t constructor
*
* currently creates one socket, listening on all addresses
* on port.
*
* @param port port to bind socket to
* @return the created socket, or NULL on error
*/
socket_t *socket_create(u_int16_t port);
#endif /*SOCKET_H_*/
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