/**
* Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior
* University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package org.openflow.protocol;
import org.jboss.netty.buffer.ChannelBuffer;
import org.openflow.util.U16;
/**
* Represents an ofp_echo_request message
*
* @author Rob Sherwood (rob.sherwood@stanford.edu)
*/
public class OFEchoRequest extends OFMessage {
public static int MINIMUM_LENGTH = 8;
byte[] payload;
public OFEchoRequest() {
super();
this.type = OFType.ECHO_REQUEST;
this.length = U16.t(MINIMUM_LENGTH);
}
@Override
public void readFrom(ChannelBuffer bb) {
super.readFrom(bb);
int datalen = this.getLengthU() - MINIMUM_LENGTH;
if (datalen > 0) {
this.payload = new byte[datalen];
bb.readBytes(payload);
}
}
/**
* @return the payload
*/
public byte[] getPayload() {
return payload;
}
/**
* @param payload
* the payload to set
*/
public void setPayload(byte[] payload) {
this.payload = payload;
}
@Override
public void writeTo(ChannelBuffer bb) {
super.writeTo(bb);
if (payload != null)
bb.writeBytes(payload);
}
}