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97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/**
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* @file socket.h
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*
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* @brief management of sockets
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*
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* receiver reads from here, sender writes to here
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef SOCKET_H_
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#define SOCKET_H_
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#include "types.h"
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#include "packet.h"
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/**
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* maximum size of a packet
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* 3000 Bytes should be sufficient, see IKEv2 draft
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*/
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#define MAX_PACKET 3000
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/**
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* @brief abstraction of one (ipv4), or in future, of multiple sockets
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*
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*/
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typedef struct socket_s socket_t;
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struct socket_s {
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/**
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* @brief receive a packet
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*
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* reads a packet from one of the sockets.
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* source will be set, dest not implemented
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*
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*
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* @param sock socket_t object to work on
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* @param packet pinter gets address from allocated packet_t
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* @return FAILED when unable to receive
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* SUCCESS when packet successfully received
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*/
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status_t (*receive) (socket_t *sock, packet_t **packet);
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/**
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* @brief send a packet
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*
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* sends a packet via desired socket.
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* uses source and dest in packet.
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*
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* @param sock socket_t object to work on
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* @param packet[out] packet_t to send
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* @return FAILED when unable to send
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* SUCCESS when packet successfully sent
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*/
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status_t (*send) (socket_t *sock, packet_t *packet);
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/**
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* @brief destroy sockets
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*
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* close sockets and destroy socket_t object
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*
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* @param sock socket_t to destroy
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* @return SUCCESS
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*/
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status_t (*destroy) (socket_t *sock);
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};
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/**
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* @brief socket_t constructor
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*
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* currently creates one socket, listening on all addresses
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* on port.
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*
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* @param port port to bind socket to
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* @return the created socket, or NULL on error
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*/
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socket_t *socket_create(u_int16_t port);
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#endif /*SOCKET_H_*/
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