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/*******************************************************************************
 * This file is part of OpenNMS(R).
 *
 * Copyright (C) 2007-2014 The OpenNMS Group, Inc.
 * OpenNMS(R) is Copyright (C) 1999-2014 The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * OpenNMS(R) 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with OpenNMS(R).  If not, see:
 *      http://www.gnu.org/licenses/
 *
 * For more information contact:
 *     OpenNMS(R) Licensing 
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package org.opennms.netmgt.icmp;

import java.io.IOException;
import java.net.InetAddress;
import java.util.List;

/**
 * Pinger class.
 *
 * @author Ben Reed
 * @author Mathew Brozowski
 */
public interface Pinger {
    /**
     * This method is used to ping a remote host to test for ICMP support.  Calls
     * the callback method upon success or error.
     *
     * @param host The {@link java.net.InetAddress} address to poll.
     * @param timeout The time to wait between each retry.
     * @param retries The number of times to retry.
     * @param packetsize The size in byte of the ICMP packet.
     * @param sequenceId an ID representing the ping
     * 
     * @param cb the {@link org.opennms.netmgt.ping.PingResponseCallback} callback to call upon success or error
     */
    public void ping(InetAddress host, long timeout, int retries, int packetsize, int sequenceId, PingResponseCallback cb) throws Exception;

    /**
     * This method is used to ping a remote host to test for ICMP support.  Calls
     * the callback method upon success or error.
     *
     * @param host The {@link java.net.InetAddress} address to poll.
     * @param timeout The time to wait between each retry.
     * @param retries The number of times to retry.
     * @param sequenceId an ID representing the ping
     * 
     * @param cb the {@link org.opennms.netmgt.ping.PingResponseCallback} callback to call upon success or error
     */
    public void ping(InetAddress host, long timeout, int retries, int sequenceId, PingResponseCallback cb) throws Exception;

    /**
     * This method is used to ping a remote host to test for ICMP support. If
     * the remote host responds within the specified period, defined by retries
     * and timeouts, then the response time is returned.
     *
     * @param host The {@link java.net.InetAddress} address to poll.
     * @param timeout The time to wait between each retry.
     * @param retries The number of times to retry.
     * @param packetsize The size in byte of the ICMP packet.
     * @return The response time in microseconds if the host is reachable and has responded with an echo reply, otherwise a null value.
     */
    public Number ping(InetAddress host, long timeout, int retries, int packetsize) throws Exception;
    

    /**
     * This method is used to ping a remote host to test for ICMP support. If
     * the remote host responds within the specified period, defined by retries
     * and timeouts, then the response time is returned.
     *
     * @param host The {@link java.net.InetAddress} address to poll.
     * @param timeout The time to wait between each retry.
     * @param retries The number of times to retry.
     * @return The response time in microseconds if the host is reachable and has responded with an echo reply, otherwise a null value.
     */
    public Number ping(InetAddress host, long timeout, int retries) throws Exception;
    

	/**
	 * Ping a remote host, using the default number of retries and timeouts.
	 *
     * @param host The {@link java.net.InetAddress} address to poll.
     * @return The response time in microseconds if the host is reachable and has responded with an echo reply, otherwise a null value.
	 * @throws IOException if any.
	 * @throws InterruptedException if any.
	 * @throws java.lang.Exception if any.
	 */
	public Number ping(InetAddress host) throws Exception;

        /**
         * Ping a remote host, sending 1 or more packets at the given interval, and then
         * return the response times as a list.
         *
         * @param host The {@link java.net.InetAddress} address to poll.
         * @param count The number of packets to send.
         * @param timeout The time to wait between each retry.
         * @param pingInterval The interval at which packets will be sent.
         * @param size The size of the packet to send.
         * @return a {@link java.util.List} of response times in microseconds.
         *     If, for a given ping request, the host is reachable and has responded with an
         *     echo reply, it will contain a number, otherwise a null value.
         */
        public List parallelPing(InetAddress host, int count, long timeout, long pingInterval, int size) throws Exception;
        
        /**
         * Ping a remote host, sending 1 or more packets at the given interval, and then
         * return the response times as a list.
         *
         * @param host The {@link java.net.InetAddress} address to poll.
         * @param count The number of packets to send.
         * @param timeout The time to wait between each retry.
         * @param pingInterval The interval at which packets will be sent.
         * @return a {@link java.util.List} of response times in microseconds.
         *     If, for a given ping request, the host is reachable and has responded with an
         *     echo reply, it will contain a number, otherwise a null value.
         */
        public List parallelPing(InetAddress host, int count, long timeout, long pingInterval) throws Exception;
        
	public void setAllowFragmentation(final boolean allow) throws Exception;

	public void setTrafficClass(final int tc) throws Exception;

	/**
	 * Initialize IPv4 in this Pinger implementation.  If unable to do so, implementations should throw an exception.
	 * @throws Exception
	 */
	public void initialize4() throws Exception;

	/**
	 * Initialize IPv6 in this Pinger implementation.  If unable to do so, implementations should throw an exception.
	 * @throws Exception
	 */
	public void initialize6() throws Exception;
	
	/**
	 * Whether or not IPv4 is initialized and available for this implementation.
	 */
	public boolean isV4Available();
	
	/**
	 * Whether or not IPv6 is initialized and available for this implementation.
	 * @return
	 */
	public boolean isV6Available();
}