net.dreamlu.iot.mqtt.codec.MqttConstant Maven / Gradle / Ivy
/*
* Copyright 2021 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;
/**
* mqtt 常量
*
* @author netty
*/
public interface MqttConstant {
/**
* mqtt protocol length
*/
int MQTT_PROTOCOL_LENGTH = 2;
/**
* 默认 最大一次读取的 byte 字节数，默认：8k
*/
int DEFAULT_MAX_READ_BUFFER_SIZE = 8 * 1024;
/**
* Default max bytes in message，默认：10M
*/
int DEFAULT_MAX_BYTES_IN_MESSAGE = 10 * 1024 * 1024;
/**
* min client id length
*/
int MIN_CLIENT_ID_LENGTH = 1;
/**
* Default max client id length,In the mqtt3.1 protocol,
* the default maximum Client Identifier length is 23，设置成 64，减少问题
*/
int DEFAULT_MAX_CLIENT_ID_LENGTH = 64;
}