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/*
* �Anytun
*
* �Anytun is a tiny implementation of SATP. Unlike Anytun which is a full
* featured implementation �Anytun has no support for multiple connections
* or synchronisation. It is a small single threaded implementation intended
* to act as a client on small platforms.
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
*
* This file is part of �Anytun.
*
* �Anytun is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* �Anytun 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 �Anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _UDP_H_
#define _UDP_H_
#include <sys/types.h>
#include <sys/socket.h>
#ifdef NO_UDPV6
#include <netinet/in.h>
typedef struct sockaddr_in udp_endpoint_t;
#else
typedef struct sockaddr_storage udp_endpoint_t;
#endif
struct udp_socket_struct {
int fd_;
udp_endpoint_t local_end_;
udp_endpoint_t remote_end_;
int remote_end_set_;
};
typedef struct udp_socket_struct udp_socket_t;
int udp_init(udp_socket_t* sock, const char* local_addr, const char* port);
void udp_set_remote(udp_socket_t* sock, const char* remote_addr, const char* port);
void udp_close(udp_socket_t* sock);
char* udp_endpoint_to_string(udp_endpoint_t e);
char* udp_get_local_end_string(udp_socket_t* sock);
char* udp_get_remote_end_string(udp_socket_t* sock);
int udp_read(udp_socket_t* sock, u_int8_t* buf, u_int32_t len, udp_endpoint_t* remote_end);
int udp_write(udp_socket_t* sock, u_int8_t* buf, u_int32_t len);
#endif
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