mping.h

支持IPv4和IPv6的组播环境中的ping实现

/*	$KAME: mping.h,v 1.3 2000/12/05 09:08:54 itojun Exp $	*/
/*
 * Copyright (C) 1999 WIDE Project.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/signal.h>
#include <net/if.h>
#include <netinet/in.h>
#include <time.h>
#include <string.h>
#include <netdb.h>
#include <errno.h>
#include <err.h>
#include <assert.h>
#include <math.h>

#define DEFAULT_INTERVAL 	   10
#define	DEFAULT_LOG_INTERVAL	 3600
#define DEFAULT_SIZE		  128
#define DEFAULT_HOPLIMIT 	    1
#define DEFAULT_PORT    	"9998"
#define	DEFAULT_SESSION_EXPIRE	(3600 * 24 * 7)	/* 7 days */

#define	MAX_MSGSIZE		 4096

#define	MAX_LOST_HISTORY	   16

#define	DEFAULT_LOGFILE		"/var/log/mprecv.log"
#define	DEFAULT_DUMPFILE	"/tmp/mprecv.dump"
#define	PID_FILE		"/var/run/mprecv.pid"

/*
 * packet format of each message
 */
struct mping {
	u_long	m_sessid;		/* session id */
	u_long	m_seq;			/* sequence number */
	struct	timeval	m_interval;	/* transmit interval */
};