net.dreamlu.iot.mqtt.codec.MqttMessageIdVariableHeader Maven / Gradle / Ivy
/*
* Copyright 2014 The Netty Project
*
* The Netty Project licenses this file to you 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:
*
* https://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 net.dreamlu.iot.mqtt.codec;
/**
* Variable Header containing only Message Id
* See MQTTV3.1/msg-id
*
* @author netty
*/
public class MqttMessageIdVariableHeader {
private final int messageId;
public static MqttMessageIdVariableHeader from(int messageId) {
if (messageId < 1 || messageId > 0xffff) {
throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
}
return new MqttMessageIdVariableHeader(messageId);
}
protected MqttMessageIdVariableHeader(int messageId) {
this.messageId = messageId;
}
public int messageId() {
return messageId;
}
@Override
public String toString() {
return "MqttMessageIdVariableHeader[" +
"messageId=" + messageId +
']';
}
public MqttMessageIdAndPropertiesVariableHeader withEmptyProperties() {
return new MqttMessageIdAndPropertiesVariableHeader(messageId, MqttProperties.NO_PROPERTIES);
}
MqttMessageIdAndPropertiesVariableHeader withDefaultEmptyProperties() {
return withEmptyProperties();
}
}