/* *  OpenVPN -- An application to securely tunnel IP networks *             over a single UDP port, with support for TLS-based *             session authentication and key exchange, *             packet encryption, packet authentication, and *             packet compression. * *  Copyright (C) 2002 James Yonan <jim@yonan.net> * *  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. * *  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. * *  You should have received a copy of the GNU General Public License *  along with this program (see the file COPYING included with this *  distribution); if not, write to the Free Software Foundation, Inc., *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */#ifndef SOCKET_H#define SOCKET_H#include "buffer.h"#include "common.h"struct udp_socket_addr{  struct sockaddr_in local;  struct sockaddr_in remote; /* initial remote */  struct sockaddr_in actual; /* remote may change due to --float */};struct udp_socket{  bool set_outgoing_initial;  bool remote_float;  struct udp_socket_addr *addr;  const char *ipchange_command;  int sd;			/* file descriptor for socket */};voidudp_socket_init (struct udp_socket *sock,		 const char *local_host,		 const char *remote_host,		 int local_port,		 int remote_port,		 bool bind_local,		 bool remote_float,		 bool inetd,		 struct udp_socket_addr *addr,		 const char *ipchange_command,		 int resolve_retry_seconds);voidudp_socket_set_outgoing_addr (const struct buffer *buf,			      struct udp_socket *sock,			      const struct sockaddr_in *addr);voidudp_socket_incoming_addr (struct buffer *buf,			  const struct udp_socket *sock,			  const struct sockaddr_in *from_addr);voidudp_socket_get_outgoing_addr (struct buffer *buf,			      const struct udp_socket *sock,			      struct sockaddr_in *addr);void udp_socket_close (struct udp_socket *sock);const char *print_sockaddr_ex (const struct sockaddr_in *addr, bool do_port, const char* separator);const char *print_sockaddr (const struct sockaddr_in *addr);/* * Inline functions */static inline booladdr_defined (const struct sockaddr_in *addr){  return addr->sin_addr.s_addr != 0;}static inline booladdr_match (const struct sockaddr_in *a1, const struct sockaddr_in *a2){  return a1->sin_addr.s_addr == a2->sin_addr.s_addr && a1->sin_port == a2->sin_port;}#endif /* SOCKET_H */