cn.starboot.mqtt.codec

类 MqttEncoder

java.lang.Object

cn.starboot.mqtt.codec.MqttEncoder

public final class MqttEncoder
extends Object

Encodes Mqtt messages into bytes following the protocol specification v3.1 as described here MQTTV3.1 or v5.0 as described here MQTTv5.0 - depending on the version specified in the first CONNECT message that goes through the channel.

作者:

netty, L.cm, MDong

字段概要

字段

限定符和类型	字段和说明
private static MqttEncoder	mqttEncoder

构造器概要

构造器

限定符	构造器和说明
private	MqttEncoder()

方法概要

限定符和类型	方法和说明
void	doEncode(ChannelContext ctx, MqttMessage message) This is the main encoding method.
private static void	encodeConnAckMessage(ChannelContext ctx, MqttConnAckMessage message, WriteBuffer writeBuffer)
private static void	encodeConnectMessage(ChannelContext ctx, MqttConnectMessage message, WriteBuffer writeBuffer)
private static void	encodeMessageWithOnlySingleByteFixedHeader(MqttMessage message, WriteBuffer writeBuffer)
private static void	encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(MqttMessage message, WriteBuffer writeBuffer)
private static byte[]	encodeProperties(MqttProperties mqttProperties)
private static byte[]	encodePropertiesIfNeeded(MqttVersion mqttVersion, MqttProperties mqttProperties)
private static void	encodePublishMessage(ChannelContext ctx, MqttPublishMessage message, WriteBuffer writeBuffer)
private static void	encodePubReplyMessage(ChannelContext ctx, MqttMessage message, WriteBuffer writeBuffer)
private static void	encodeReasonCodePlusPropertiesMessage(ChannelContext ctx, MqttMessage message, WriteBuffer writeBuffer)
private static byte[]	encodeStringUtf8(String s)
private static void	encodeSubAckMessage(ChannelContext ctx, MqttSubAckMessage message, WriteBuffer writeBuffer)
private static void	encodeSubscribeMessage(ChannelContext ctx, MqttSubscribeMessage message, WriteBuffer writeBuffer)
private static void	encodeUnsubAckMessage(ChannelContext ctx, MqttUnsubAckMessage message, WriteBuffer writeBuffer)
private static void	encodeUnsubscribeMessage(ChannelContext ctx, MqttUnsubscribeMessage message, WriteBuffer writeBuffer)
private static int	getConnVariableHeaderFlag(MqttConnectVariableHeader variableHeader)
private static int	getFixedHeaderByte1(MqttFixedHeader header)
static MqttEncoder	getInstance()
private static int	getVariableLengthInt(int num)
private static void	writeEagerUTF8String(MqttByteBuffer mqttByteBuffer, String s)
private static void	writeVariableLengthInt(WriteBuffer writeBuffer, int num)

从类继承的方法 java.lang.Object

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

字段详细资料

mqttEncoder

private static MqttEncoder mqttEncoder

构造器详细资料

MqttEncoder

private MqttEncoder()

方法详细资料

getInstance

public static MqttEncoder getInstance()

doEncode

public void doEncode(ChannelContext ctx,
                     MqttMessage message)
              throws AioEncoderException

This is the main encoding method. It's only visible for testing.

参数:

ctx - ChannelContext

message - MQTT message to encode

抛出:

AioEncoderException

encodeConnectMessage

private static void encodeConnectMessage(ChannelContext ctx,
                                         MqttConnectMessage message,
                                         WriteBuffer writeBuffer)
                                  throws AioEncoderException

抛出:

AioEncoderException

getConnVariableHeaderFlag

private static int getConnVariableHeaderFlag(MqttConnectVariableHeader variableHeader)

encodeConnAckMessage

private static void encodeConnAckMessage(ChannelContext ctx,
                                         MqttConnAckMessage message,
                                         WriteBuffer writeBuffer)
                                  throws AioEncoderException

抛出:

AioEncoderException

encodeSubscribeMessage

private static void encodeSubscribeMessage(ChannelContext ctx,
                                           MqttSubscribeMessage message,
                                           WriteBuffer writeBuffer)
                                    throws AioEncoderException

抛出:

AioEncoderException

encodeUnsubscribeMessage

private static void encodeUnsubscribeMessage(ChannelContext ctx,
                                             MqttUnsubscribeMessage message,
                                             WriteBuffer writeBuffer)
                                      throws AioEncoderException

抛出:

AioEncoderException

encodeSubAckMessage

private static void encodeSubAckMessage(ChannelContext ctx,
                                        MqttSubAckMessage message,
                                        WriteBuffer writeBuffer)
                                 throws AioEncoderException

抛出:

AioEncoderException

encodeUnsubAckMessage

private static void encodeUnsubAckMessage(ChannelContext ctx,
                                          MqttUnsubAckMessage message,
                                          WriteBuffer writeBuffer)
                                   throws AioEncoderException

抛出:

AioEncoderException

encodePublishMessage

private static void encodePublishMessage(ChannelContext ctx,
                                         MqttPublishMessage message,
                                         WriteBuffer writeBuffer)
                                  throws AioEncoderException

抛出:

AioEncoderException

encodePubReplyMessage

private static void encodePubReplyMessage(ChannelContext ctx,
                                          MqttMessage message,
                                          WriteBuffer writeBuffer)
                                   throws AioEncoderException

抛出:

AioEncoderException

encodeMessageWithOnlySingleByteFixedHeaderAndMessageId

private static void encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(MqttMessage message,
                                                                           WriteBuffer writeBuffer)
                                                                    throws AioEncoderException

抛出:

AioEncoderException

encodeReasonCodePlusPropertiesMessage

private static void encodeReasonCodePlusPropertiesMessage(ChannelContext ctx,
                                                          MqttMessage message,
                                                          WriteBuffer writeBuffer)
                                                   throws AioEncoderException

抛出:

AioEncoderException

encodeMessageWithOnlySingleByteFixedHeader

private static void encodeMessageWithOnlySingleByteFixedHeader(MqttMessage message,
                                                               WriteBuffer writeBuffer)

encodePropertiesIfNeeded

private static byte[] encodePropertiesIfNeeded(MqttVersion mqttVersion,
                                               MqttProperties mqttProperties)

encodeProperties

private static byte[] encodeProperties(MqttProperties mqttProperties)

getFixedHeaderByte1

private static int getFixedHeaderByte1(MqttFixedHeader header)

writeVariableLengthInt

private static void writeVariableLengthInt(WriteBuffer writeBuffer,
                                           int num)

getVariableLengthInt

private static int getVariableLengthInt(int num)

writeEagerUTF8String

private static void writeEagerUTF8String(MqttByteBuffer mqttByteBuffer,
                                         String s)

encodeStringUtf8

private static byte[] encodeStringUtf8(String s)