/*
  *  OpenVPN -- An application to securely tunnel IP networks
  *             over a single TCP/UDP port, with support for SSL/TLS-based
  *             session authentication and key exchange,
  *             packet encryption, packet authentication, and
  *             packet compression.
  *

  *  Copyright (C) 2002-2009 OpenVPN Technologies, Inc. <sales@openvpn.net>

  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2
  *  as published by the Free Software Foundation.
  *
  *  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 PING_H
 #define PING_H
 
 #include "init.h"
 #include "forward.h"
 
 /*
  * Initial default --ping-restart before --pull
  */
 #define PRE_PULL_INITIAL_PING_RESTART 120  /* in seconds */
 
 extern const uint8_t ping_string[];
 
 /* PING_STRING_SIZE must be sizeof (ping_string) */
 #define PING_STRING_SIZE 16
 
 static inline bool
 is_ping_msg (const struct buffer* buf)
 {
   return buf_string_match (buf, ping_string, PING_STRING_SIZE);
 }
 
 #endif