/******************************************************************************* | |
* Copyright (c) 2008, 2014 IBM Corp. | |
* | |
* All rights reserved. This program and the accompanying materials | |
* are made available under the terms of the Eclipse Public License v1.0 | |
* and Eclipse Distribution License v1.0 which accompany this distribution. | |
* | |
* The Eclipse Public License is available at | |
* http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Ian Craggs - initial API and implementation and/or initial documentation | |
*******************************************************************************/ | |
package org.eclipse.paho.mqttsn.gateway.messages.mqtt; | |
/** | |
* This object represents a Mqtt PUBREL message. | |
* | |
*/ | |
public class MqttPubRel extends MqttMessage{ | |
//Mqtt PUBREL fields | |
private int msgId; | |
/** | |
* MqttPubRel constructor.Sets the appropriate message type. | |
*/ | |
public MqttPubRel() { | |
msgType = MqttMessage.PUBREL; | |
} | |
/** | |
* MqttPubRel constructor.Sets the appropriate message type and constructs | |
* a Mqtt PUBREL message from a received byte array. | |
* @param data: The buffer that contains the PUBREL message. | |
*/ | |
public MqttPubRel(byte[] data) { | |
msgType = MqttMessage.PUBREL; | |
msgId = ((data[2] & 0xFF) << 8) + (data[3] & 0xFF); | |
} | |
/** | |
* Method to convert this message to a byte array for transmission. | |
* @return A byte array containing the PUBREL message as it should appear on the wire. | |
*/ | |
public byte[] toBytes() { | |
int length = 4; | |
byte[] data = new byte[length]; | |
data [0] = (byte)((msgType << 4) & 0xF0); | |
data [1] = (byte)0x02;//add Remaining length fields | |
data [2] = (byte)((msgId >> 8) & 0xFF); | |
data [3] = (byte) (msgId & 0xFF); | |
return data; | |
} | |
public int getMsgId() { | |
return msgId; | |
} | |
public void setMsgId(int msgId) { | |
this.msgId = msgId; | |
} | |
} |