cn.starboot.mqtt.codec

类 MqttFixedHeader

java.lang.Object

cn.starboot.mqtt.codec.MqttFixedHeader

public final class MqttFixedHeader
extends Object

See MQTTV3.1/fixed-header

作者:

netty, L.cm, MDong

字段概要

字段

限定符和类型	字段和说明
private int	headLength
private boolean	isDup
private boolean	isRetain
private MqttMessageType	messageType
private MqttQoS	qosLevel
private int	remainingLength

构造器概要

构造器

构造器和说明
MqttFixedHeader(MqttMessageType messageType, boolean isDup, MqttQoS qosLevel, boolean isRetain, int remainingLength)
MqttFixedHeader(MqttMessageType messageType, boolean isDup, MqttQoS qosLevel, boolean isRetain, int headLength, int remainingLength)

方法概要

限定符和类型	方法和说明
(专用程序包) void	downgradeQos() 做 qos 降级，mqtt 规定 qos > 0，messageId 必须大于 0，为了兼容，固做降级处理
int	getMessageLength()
int	headLength()
boolean	isDup()
boolean	isRetain()
MqttMessageType	messageType()
MqttQoS	qosLevel()
int	remainingLength()
String	toString()

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

字段详细资料

messageType

private final MqttMessageType messageType

isDup

private final boolean isDup

qosLevel

private MqttQoS qosLevel

isRetain

private final boolean isRetain

headLength

private final int headLength

remainingLength

private final int remainingLength

构造器详细资料

MqttFixedHeader

public MqttFixedHeader(MqttMessageType messageType,
                       boolean isDup,
                       MqttQoS qosLevel,
                       boolean isRetain,
                       int remainingLength)

MqttFixedHeader

public MqttFixedHeader(MqttMessageType messageType,
                       boolean isDup,
                       MqttQoS qosLevel,
                       boolean isRetain,
                       int headLength,
                       int remainingLength)

方法详细资料

messageType

public MqttMessageType messageType()

isDup

public boolean isDup()

qosLevel

public MqttQoS qosLevel()

downgradeQos

void downgradeQos()

做 qos 降级，mqtt 规定 qos > 0，messageId 必须大于 0，为了兼容，固做降级处理

isRetain

public boolean isRetain()

headLength

public int headLength()

remainingLength

public int remainingLength()

getMessageLength

public int getMessageLength()

toString

public String toString()

覆盖:

toString 在类中 Object