/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.netmgt.icmp.jna;
import java.nio.ByteBuffer;
import java.util.concurrent.TimeUnit;
import org.opennms.jicmp.ip.ICMPEchoPacket;
import org.opennms.jicmp.ip.ICMPPacket;
import org.opennms.netmgt.icmp.EchoPacket;
class V4PingReply extends ICMPEchoPacket implements EchoPacket {
private long m_receivedTimeNanos;
public V4PingReply(ICMPPacket icmpPacket, long receivedTimeNanos) {
super(icmpPacket);
m_receivedTimeNanos = receivedTimeNanos;
}
public boolean isValid() {
ByteBuffer content = getContentBuffer();
return content.limit() >= V4PingRequest.DATA_LENGTH && V4PingRequest.COOKIE == content.getLong(V4PingRequest.OFFSET_COOKIE);
}
@Override
public boolean isEchoReply() {
return Type.EchoReply.equals(getType());
}
@Override
public int getIdentifier() {
// this is here just for EchoPacket interface completeness
return super.getIdentifier();
}
@Override
public int getSequenceNumber() {
// this is here just for EchoPacket interface completeness
return super.getSequenceNumber();
}
@Override
public long getThreadId() {
return getContentBuffer().getLong(V4PingRequest.OFFSET_THREAD_ID);
}
@Override
public long getSentTimeNanos() {
return getContentBuffer().getLong(V4PingRequest.OFFSET_TIMESTAMP);
}
@Override
public long getReceivedTimeNanos() {
return m_receivedTimeNanos;
}
@Override
public double elapsedTime(TimeUnit unit) {
double nanosPerUnit = TimeUnit.NANOSECONDS.convert(1, unit);
return elapsedTimeNanos() / nanosPerUnit;
}
protected long elapsedTimeNanos() {
return getReceivedTimeNanos() - getSentTimeNanos();
}
}