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MQTT5 support for netty-codec-mqtt (#10483)

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Motivation:

 MQTT Specification version 5 was released over a year ago,
 netty-codec-mqtt should be changed to support it.

Modifications:

  Added more message and header types in `io.netty.handler.codec.mqtt`
  package in `netty-coded-mqtt` subproject,
  changed `MqttEncoder` and `MqttDecoder` to handle them properly,
  added attribute `NETTY_CODEC_MQTT_VERSION` to track protocol version

Result:

  `netty-codec-mqtt` supports both MQTT5 and MQTT3 now.
This commit is contained in:
Paul Lysak 2020-08-31 10:16:40 +03:00 committed by Norman Maurer
parent 079b15eee1
commit fb4a57826b
27 changed files with 2319 additions and 238 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttCodecUtil.java
View File

@ -16,7 +16,10 @@
package io.netty.handler.codec.mqtt;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.DecoderException;
import io.netty.util.Attribute;
import io.netty.util.AttributeKey;
final class MqttCodecUtil {
@ -24,6 +27,22 @@ final class MqttCodecUtil {
private static final int MIN_CLIENT_ID_LENGTH = 1;
private static final int MAX_CLIENT_ID_LENGTH = 23;
static final AttributeKey<MqttVersion> MQTT_VERSION_KEY = AttributeKey.valueOf("NETTY_CODEC_MQTT_VERSION");
static MqttVersion getMqttVersion(ChannelHandlerContext ctx) {
Attribute<MqttVersion> attr = ctx.channel().attr(MQTT_VERSION_KEY);
MqttVersion version = attr.get();
if (version == null) {
return MqttVersion.MQTT_3_1_1;
}
return version;
}
static void setMqttVersion(ChannelHandlerContext ctx, MqttVersion version) {
Attribute<MqttVersion> attr = ctx.channel().attr(MQTT_VERSION_KEY);
attr.set(version);
}
static boolean isValidPublishTopicName(String topicName) {
// publish topic name must not contain any wildcard
for (char c : TOPIC_WILDCARDS) {
@ -43,15 +62,15 @@ final class MqttCodecUtil {
return clientId != null && clientId.length() >= MIN_CLIENT_ID_LENGTH &&
clientId.length() <= MAX_CLIENT_ID_LENGTH;
}
if (mqttVersion == MqttVersion.MQTT_3_1_1) {
// In 3.1.3.1 Client Identifier of MQTT 3.1.1 specification, The Server MAY allow ClientId’s
if (mqttVersion == MqttVersion.MQTT_3_1_1 || mqttVersion == MqttVersion.MQTT_5) {
// In 3.1.3.1 Client Identifier of MQTT 3.1.1 and 5.0 specifications, The Server MAY allow ClientId’s
// that contain more than 23 encoded bytes. And, The Server MAY allow zero-length ClientId.
return clientId != null;
}
throw new IllegalArgumentException(mqttVersion + " is unknown mqtt version");
}
static MqttFixedHeader validateFixedHeader(MqttFixedHeader mqttFixedHeader) {
static MqttFixedHeader validateFixedHeader(ChannelHandlerContext ctx, MqttFixedHeader mqttFixedHeader) {
switch (mqttFixedHeader.messageType()) {
case PUBREL:
case SUBSCRIBE:
@ -59,6 +78,12 @@ final class MqttCodecUtil {
if (mqttFixedHeader.qosLevel() != MqttQoS.AT_LEAST_ONCE) {
throw new DecoderException(mqttFixedHeader.messageType().name() + " message must have QoS 1");
}
return mqttFixedHeader;
case AUTH:
if (MqttCodecUtil.getMqttVersion(ctx) != MqttVersion.MQTT_5) {
throw new DecoderException("AUTH message requires at least MQTT 5");
}
return mqttFixedHeader;
default:
return mqttFixedHeader;
}

12
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttConnAckVariableHeader.java
View File

@ -27,9 +27,17 @@ public final class MqttConnAckVariableHeader {
private final boolean sessionPresent;
private final MqttProperties properties;
public MqttConnAckVariableHeader(MqttConnectReturnCode connectReturnCode, boolean sessionPresent) {
this(connectReturnCode, sessionPresent, MqttProperties.NO_PROPERTIES);
}
public MqttConnAckVariableHeader(MqttConnectReturnCode connectReturnCode, boolean sessionPresent,
MqttProperties properties) {
this.connectReturnCode = connectReturnCode;
this.sessionPresent = sessionPresent;
this.properties = MqttProperties.withEmptyDefaults(properties);
}
public MqttConnectReturnCode connectReturnCode() {
@ -40,6 +48,10 @@ public final class MqttConnAckVariableHeader {
return sessionPresent;
}
public MqttProperties properties() {
return properties;
}
@Override
public String toString() {
return new StringBuilder(StringUtil.simpleClassName(this))

25
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttConnectPayload.java
View File

@ -27,13 +27,15 @@ import io.netty.util.internal.StringUtil;
public final class MqttConnectPayload {
private final String clientIdentifier;
private final MqttProperties willProperties;
private final String willTopic;
private final byte[] willMessage;
private final String userName;
private final byte[] password;
/**
* @deprecated use {@link MqttConnectPayload#MqttConnectPayload(String, String, byte[], String, byte[])} instead
* @deprecated use {@link MqttConnectPayload#MqttConnectPayload(String,
* MqttProperties, String, byte[], String, byte[])} instead
*/
@Deprecated
public MqttConnectPayload(
@ -44,6 +46,7 @@ public final class MqttConnectPayload {
String password) {
this(
clientIdentifier,
MqttProperties.NO_PROPERTIES,
willTopic,
willMessage.getBytes(CharsetUtil.UTF_8),
userName,
@ -56,7 +59,23 @@ public final class MqttConnectPayload {
byte[] willMessage,
String userName,
byte[] password) {
this(clientIdentifier,
MqttProperties.NO_PROPERTIES,
willTopic,
willMessage,
userName,
password);
}
public MqttConnectPayload(
String clientIdentifier,
MqttProperties willProperties,
String willTopic,
byte[] willMessage,
String userName,
byte[] password) {
this.clientIdentifier = clientIdentifier;
this.willProperties = MqttProperties.withEmptyDefaults(willProperties);
this.willTopic = willTopic;
this.willMessage = willMessage;
this.userName = userName;
@ -67,6 +86,10 @@ public final class MqttConnectPayload {
return clientIdentifier;
}
public MqttProperties willProperties() {
return willProperties;
}
public String willTopic() {
return willTopic;
}

25
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttConnectReturnCode.java
View File

@ -25,11 +25,34 @@ import java.util.Map;
*/
public enum MqttConnectReturnCode {
CONNECTION_ACCEPTED((byte) 0x00),
//MQTT 3 codes
CONNECTION_REFUSED_UNACCEPTABLE_PROTOCOL_VERSION((byte) 0X01),
CONNECTION_REFUSED_IDENTIFIER_REJECTED((byte) 0x02),
CONNECTION_REFUSED_SERVER_UNAVAILABLE((byte) 0x03),
CONNECTION_REFUSED_BAD_USER_NAME_OR_PASSWORD((byte) 0x04),
CONNECTION_REFUSED_NOT_AUTHORIZED((byte) 0x05);
CONNECTION_REFUSED_NOT_AUTHORIZED((byte) 0x05),
//MQTT 5 codes
CONNECTION_REFUSED_UNSPECIFIED_ERROR((byte) 0x80),
CONNECTION_REFUSED_MALFORMED_PACKET((byte) 0x81),
CONNECTION_REFUSED_PROTOCOL_ERROR((byte) 0x82),
CONNECTION_REFUSED_IMPLEMENTATION_SPECIFIC((byte) 0x83),
CONNECTION_REFUSED_UNSUPPORTED_PROTOCOL_VERSION((byte) 0x84),
CONNECTION_REFUSED_CLIENT_IDENTIFIER_NOT_VALID((byte) 0x85),
CONNECTION_REFUSED_BAD_USERNAME_OR_PASSWORD((byte) 0x86),
CONNECTION_REFUSED_NOT_AUTHORIZED_5((byte) 0x87),
CONNECTION_REFUSED_SERVER_UNAVAILABLE_5((byte) 0x88),
CONNECTION_REFUSED_SERVER_BUSY((byte) 0x89),
CONNECTION_REFUSED_BANNED((byte) 0x8A),
CONNECTION_REFUSED_BAD_AUTHENTICATION_METHOD((byte) 0x8C),
CONNECTION_REFUSED_TOPIC_NAME_INVALID((byte) 0x90),
CONNECTION_REFUSED_PACKET_TOO_LARGE((byte) 0x95),
CONNECTION_REFUSED_QUOTA_EXCEEDED((byte) 0x97),
CONNECTION_REFUSED_PAYLOAD_FORMAT_INVALID((byte) 0x99),
CONNECTION_REFUSED_RETAIN_NOT_SUPPORTED((byte) 0x9A),
CONNECTION_REFUSED_QOS_NOT_SUPPORTED((byte) 0x9B),
CONNECTION_REFUSED_USE_ANOTHER_SERVER((byte) 0x9C),
CONNECTION_REFUSED_SERVER_MOVED((byte) 0x9D),
CONNECTION_REFUSED_CONNECTION_RATE_EXCEEDED((byte) 0x9F);
private static final Map<Byte, MqttConnectReturnCode> VALUE_TO_CODE_MAP;

29
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttConnectVariableHeader.java
View File

@ -32,6 +32,7 @@ public final class MqttConnectVariableHeader {
private final boolean isWillFlag;
private final boolean isCleanSession;
private final int keepAliveTimeSeconds;
private final MqttProperties properties;
public MqttConnectVariableHeader(
String name,
@ -43,6 +44,29 @@ public final class MqttConnectVariableHeader {
boolean isWillFlag,
boolean isCleanSession,
int keepAliveTimeSeconds) {
this(name,
version,
hasUserName,
hasPassword,
isWillRetain,
willQos,
isWillFlag,
isCleanSession,
keepAliveTimeSeconds,
MqttProperties.NO_PROPERTIES);
}
public MqttConnectVariableHeader(
String name,
int version,
boolean hasUserName,
boolean hasPassword,
boolean isWillRetain,
int willQos,
boolean isWillFlag,
boolean isCleanSession,
int keepAliveTimeSeconds,
MqttProperties properties) {
this.name = name;
this.version = version;
this.hasUserName = hasUserName;
@ -52,6 +76,7 @@ public final class MqttConnectVariableHeader {
this.isWillFlag = isWillFlag;
this.isCleanSession = isCleanSession;
this.keepAliveTimeSeconds = keepAliveTimeSeconds;
this.properties = MqttProperties.withEmptyDefaults(properties);
}
public String name() {
@ -90,6 +115,10 @@ public final class MqttConnectVariableHeader {
return keepAliveTimeSeconds;
}
public MqttProperties properties() {
return properties;
}
@Override
public String toString() {
return new StringBuilder(StringUtil.simpleClassName(this))

330
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttDecoder.java
View File

@ -20,6 +20,7 @@ import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.DecoderException;
import io.netty.handler.codec.ReplayingDecoder;
import io.netty.handler.codec.TooLongFrameException;
import io.netty.handler.codec.mqtt.MqttDecoder.DecoderState;
import io.netty.util.CharsetUtil;
@ -31,11 +32,15 @@ import static io.netty.handler.codec.mqtt.MqttCodecUtil.isValidMessageId;
import static io.netty.handler.codec.mqtt.MqttCodecUtil.isValidPublishTopicName;
import static io.netty.handler.codec.mqtt.MqttCodecUtil.resetUnusedFields;
import static io.netty.handler.codec.mqtt.MqttCodecUtil.validateFixedHeader;
import static io.netty.handler.codec.mqtt.MqttSubscriptionOption.RetainedHandlingPolicy;
/**
* Decodes Mqtt messages from bytes, following
* <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">
* the MQTT protocol specification v3.1</a>
* the MQTT protocol specification
* <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">v3.1</a>
* or
* <a href="https://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html">v5.0</a>, depending on the
* version specified in the CONNECT message that first goes through the channel.
*/
public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
@ -72,7 +77,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
protected void decode(ChannelHandlerContext ctx, ByteBuf buffer) throws Exception {
switch (state()) {
case READ_FIXED_HEADER: try {
mqttFixedHeader = decodeFixedHeader(buffer);
mqttFixedHeader = decodeFixedHeader(ctx, buffer);
bytesRemainingInVariablePart = mqttFixedHeader.remainingLength();
checkpoint(DecoderState.READ_VARIABLE_HEADER);
// fall through
@ -82,10 +87,10 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
}
case READ_VARIABLE_HEADER: try {
final Result<?> decodedVariableHeader = decodeVariableHeader(buffer, mqttFixedHeader);
final Result<?> decodedVariableHeader = decodeVariableHeader(ctx, buffer, mqttFixedHeader);
variableHeader = decodedVariableHeader.value;
if (bytesRemainingInVariablePart > maxBytesInMessage) {
throw new DecoderException("too large message: " + bytesRemainingInVariablePart + " bytes");
throw new TooLongFrameException("too large message: " + bytesRemainingInVariablePart + " bytes");
}
bytesRemainingInVariablePart -= decodedVariableHeader.numberOfBytesConsumed;
checkpoint(DecoderState.READ_PAYLOAD);
@ -98,6 +103,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
case READ_PAYLOAD: try {
final Result<?> decodedPayload =
decodePayload(
ctx,
buffer,
mqttFixedHeader.messageType(),
bytesRemainingInVariablePart,
@ -142,7 +148,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
* @param buffer the buffer to decode from
* @return the fixed header
*/
private static MqttFixedHeader decodeFixedHeader(ByteBuf buffer) {
private static MqttFixedHeader decodeFixedHeader(ChannelHandlerContext ctx, ByteBuf buffer) {
short b1 = buffer.readUnsignedByte();
MqttMessageType messageType = MqttMessageType.valueOf(b1 >> 4);
@ -167,7 +173,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
}
MqttFixedHeader decodedFixedHeader =
new MqttFixedHeader(messageType, dupFlag, MqttQoS.valueOf(qosLevel), retain, remainingLength);
return validateFixedHeader(resetUnusedFields(decodedFixedHeader));
return validateFixedHeader(ctx, resetUnusedFields(decodedFixedHeader));
}
/**
@ -176,44 +182,54 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
* @param mqttFixedHeader MqttFixedHeader of the same message
* @return the variable header
*/
private static Result<?> decodeVariableHeader(ByteBuf buffer, MqttFixedHeader mqttFixedHeader) {
private Result<?> decodeVariableHeader(ChannelHandlerContext ctx, ByteBuf buffer, MqttFixedHeader mqttFixedHeader) {
switch (mqttFixedHeader.messageType()) {
case CONNECT:
return decodeConnectionVariableHeader(buffer);
return decodeConnectionVariableHeader(ctx, buffer);
case CONNACK:
return decodeConnAckVariableHeader(buffer);
return decodeConnAckVariableHeader(ctx, buffer);
case SUBSCRIBE:
case UNSUBSCRIBE:
case SUBSCRIBE:
case SUBACK:
case UNSUBACK:
return decodeMessageIdAndPropertiesVariableHeader(ctx, buffer);
case PUBACK:
case PUBREC:
case PUBCOMP:
case PUBREL:
return decodeMessageIdVariableHeader(buffer);
return decodePubReplyMessage(buffer);
case PUBLISH:
return decodePublishVariableHeader(buffer, mqttFixedHeader);
return decodePublishVariableHeader(ctx, buffer, mqttFixedHeader);
case DISCONNECT:
case AUTH:
return decodeReasonCodeAndPropertiesVariableHeader(buffer);
case PINGREQ:
case PINGRESP:
case DISCONNECT:
// Empty variable header
return new Result<>(null, 0);
default:
//shouldn't reach here
throw new DecoderException("Unknown message type: " + mqttFixedHeader.messageType());
}
return new Result<>(null, 0); //should never reach here
}
private static Result<MqttConnectVariableHeader> decodeConnectionVariableHeader(ByteBuf buffer) {
private static Result<MqttConnectVariableHeader> decodeConnectionVariableHeader(
ChannelHandlerContext ctx,
ByteBuf buffer) {
final Result<String> protoString = decodeString(buffer);
int numberOfBytesConsumed = protoString.numberOfBytesConsumed;
final byte protocolLevel = buffer.readByte();
numberOfBytesConsumed += 1;
final MqttVersion mqttVersion = MqttVersion.fromProtocolNameAndLevel(protoString.value, protocolLevel);
MqttVersion version = MqttVersion.fromProtocolNameAndLevel(protoString.value, protocolLevel);
MqttCodecUtil.setMqttVersion(ctx, version);
final int b1 = buffer.readUnsignedByte();
numberOfBytesConsumed += 1;
@ -227,7 +243,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
final int willQos = (b1 & 0x18) >> 3;
final boolean willFlag = (b1 & 0x04) == 0x04;
final boolean cleanSession = (b1 & 0x02) == 0x02;
if (mqttVersion == MqttVersion.MQTT_3_1_1) {
if (version == MqttVersion.MQTT_3_1_1 || version == MqttVersion.MQTT_5) {
final boolean zeroReservedFlag = (b1 & 0x01) == 0x0;
if (!zeroReservedFlag) {
// MQTT v3.1.1: The Server MUST validate that the reserved flag in the CONNECT Control Packet is
@ -237,25 +253,48 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
}
}
final MqttProperties properties;
if (version == MqttVersion.MQTT_5) {
final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
properties = propertiesResult.value;
numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
} else {
properties = MqttProperties.NO_PROPERTIES;
}
final MqttConnectVariableHeader mqttConnectVariableHeader = new MqttConnectVariableHeader(
mqttVersion.protocolName(),
mqttVersion.protocolLevel(),
version.protocolName(),
version.protocolLevel(),
hasUserName,
hasPassword,
willRetain,
willQos,
willFlag,
cleanSession,
keepAlive.value);
keepAlive.value,
properties);
return new Result<>(mqttConnectVariableHeader, numberOfBytesConsumed);
}
private static Result<MqttConnAckVariableHeader> decodeConnAckVariableHeader(ByteBuf buffer) {
private static Result<MqttConnAckVariableHeader> decodeConnAckVariableHeader(
ChannelHandlerContext ctx,
ByteBuf buffer) {
final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
final boolean sessionPresent = (buffer.readUnsignedByte() & 0x01) == 0x01;
byte returnCode = buffer.readByte();
final int numberOfBytesConsumed = 2;
int numberOfBytesConsumed = 2;
final MqttProperties properties;
if (mqttVersion == MqttVersion.MQTT_5) {
final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
properties = propertiesResult.value;
numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
} else {
properties = MqttProperties.NO_PROPERTIES;
}
final MqttConnAckVariableHeader mqttConnAckVariableHeader =
new MqttConnAckVariableHeader(MqttConnectReturnCode.valueOf(returnCode), sessionPresent);
new MqttConnAckVariableHeader(MqttConnectReturnCode.valueOf(returnCode), sessionPresent, properties);
return new Result<>(mqttConnAckVariableHeader, numberOfBytesConsumed);
}
@ -266,9 +305,89 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
messageId.numberOfBytesConsumed);
}
private static Result<MqttPublishVariableHeader> decodePublishVariableHeader(
private static Result<MqttMessageIdAndPropertiesVariableHeader> decodeMessageIdAndPropertiesVariableHeader(
ChannelHandlerContext ctx,
ByteBuf buffer) {
final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
final Result<Integer> packetId = decodeMessageId(buffer);
final MqttMessageIdAndPropertiesVariableHeader mqttVariableHeader;
final int mqtt5Consumed;
if (mqttVersion == MqttVersion.MQTT_5) {
final Result<MqttProperties> properties = decodeProperties(buffer);
mqttVariableHeader = new MqttMessageIdAndPropertiesVariableHeader(packetId.value, properties.value);
mqtt5Consumed = properties.numberOfBytesConsumed;
} else {
mqttVariableHeader = new MqttMessageIdAndPropertiesVariableHeader(packetId.value,
MqttProperties.NO_PROPERTIES);
mqtt5Consumed = 0;
}
return new Result<MqttMessageIdAndPropertiesVariableHeader>(mqttVariableHeader,
packetId.numberOfBytesConsumed + mqtt5Consumed);
}
private Result<MqttPubReplyMessageVariableHeader> decodePubReplyMessage(ByteBuf buffer) {
final Result<Integer> packetId = decodeMessageId(buffer);
final MqttPubReplyMessageVariableHeader mqttPubAckVariableHeader;
final int consumed;
if (bytesRemainingInVariablePart > 3) {
final byte reasonCode = buffer.readByte();
final Result<MqttProperties> properties = decodeProperties(buffer);
mqttPubAckVariableHeader = new MqttPubReplyMessageVariableHeader(packetId.value,
reasonCode,
properties.value);
consumed = packetId.numberOfBytesConsumed + 1 + properties.numberOfBytesConsumed;
} else if (bytesRemainingInVariablePart > 2) {
final byte reasonCode = buffer.readByte();
mqttPubAckVariableHeader = new MqttPubReplyMessageVariableHeader(packetId.value,
reasonCode,
MqttProperties.NO_PROPERTIES);
consumed = packetId.numberOfBytesConsumed + 1;
} else {
mqttPubAckVariableHeader = new MqttPubReplyMessageVariableHeader(packetId.value,
(byte) 0,
MqttProperties.NO_PROPERTIES);
consumed = packetId.numberOfBytesConsumed;
}
return new Result<MqttPubReplyMessageVariableHeader>(mqttPubAckVariableHeader, consumed);
}
private Result<MqttReasonCodeAndPropertiesVariableHeader> decodeReasonCodeAndPropertiesVariableHeader(
ByteBuf buffer) {
final byte reasonCode;
final MqttProperties properties;
final int consumed;
if (bytesRemainingInVariablePart > 1) {
reasonCode = buffer.readByte();
final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
properties = propertiesResult.value;
consumed = 1 + propertiesResult.numberOfBytesConsumed;
} else if (bytesRemainingInVariablePart > 0) {
reasonCode = buffer.readByte();
properties = MqttProperties.NO_PROPERTIES;
consumed = 1;
} else {
reasonCode = 0;
properties = MqttProperties.NO_PROPERTIES;
consumed = 0;
}
final MqttReasonCodeAndPropertiesVariableHeader mqttReasonAndPropsVariableHeader =
new MqttReasonCodeAndPropertiesVariableHeader(reasonCode, properties);
return new Result<MqttReasonCodeAndPropertiesVariableHeader>(
mqttReasonAndPropsVariableHeader,
consumed);
}
private Result<MqttPublishVariableHeader> decodePublishVariableHeader(
ChannelHandlerContext ctx,
ByteBuf buffer,
MqttFixedHeader mqttFixedHeader) {
final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
final Result<String> decodedTopic = decodeString(buffer);
if (!isValidPublishTopicName(decodedTopic.value)) {
throw new DecoderException("invalid publish topic name: " + decodedTopic.value + " (contains wildcards)");
@ -281,8 +400,18 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
messageId = decodedMessageId.value;
numberOfBytesConsumed += decodedMessageId.numberOfBytesConsumed;
}
final MqttProperties properties;
if (mqttVersion == MqttVersion.MQTT_5) {
final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
properties = propertiesResult.value;
numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
} else {
properties = MqttProperties.NO_PROPERTIES;
}
final MqttPublishVariableHeader mqttPublishVariableHeader =
new MqttPublishVariableHeader(decodedTopic.value, messageId);
new MqttPublishVariableHeader(decodedTopic.value, messageId, properties);
return new Result<>(mqttPublishVariableHeader, numberOfBytesConsumed);
}
@ -304,6 +433,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
* @return the payload
*/
private static Result<?> decodePayload(
ChannelHandlerContext ctx,
ByteBuf buffer,
MqttMessageType messageType,
int bytesRemainingInVariablePart,
@ -321,6 +451,9 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
case UNSUBSCRIBE:
return decodeUnsubscribePayload(buffer, bytesRemainingInVariablePart);
case UNSUBACK:
return decodeUnsubAckPayload(ctx, buffer, bytesRemainingInVariablePart);
case PUBLISH:
return decodePublishPayload(buffer, bytesRemainingInVariablePart);
@ -344,11 +477,22 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
Result<String> decodedWillTopic = null;
Result<byte[]> decodedWillMessage = null;
final MqttProperties willProperties;
if (mqttConnectVariableHeader.isWillFlag()) {
if (mqttVersion == MqttVersion.MQTT_5) {
final Result<MqttProperties> propertiesResult = decodeProperties(buffer);
willProperties = propertiesResult.value;
numberOfBytesConsumed += propertiesResult.numberOfBytesConsumed;
} else {
willProperties = MqttProperties.NO_PROPERTIES;
}
decodedWillTopic = decodeString(buffer, 0, 32767);
numberOfBytesConsumed += decodedWillTopic.numberOfBytesConsumed;
decodedWillMessage = decodeByteArray(buffer);
numberOfBytesConsumed += decodedWillMessage.numberOfBytesConsumed;
} else {
willProperties = MqttProperties.NO_PROPERTIES;
}
Result<String> decodedUserName = null;
Result<byte[]> decodedPassword = null;
@ -364,6 +508,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
final MqttConnectPayload mqttConnectPayload =
new MqttConnectPayload(
decodedClientId.value,
willProperties,
decodedWillTopic != null ? decodedWillTopic.value : null,
decodedWillMessage != null ? decodedWillMessage.value : null,
decodedUserName != null ? decodedUserName.value : null,
@ -379,9 +524,21 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
while (numberOfBytesConsumed < bytesRemainingInVariablePart) {
final Result<String> decodedTopicName = decodeString(buffer);
numberOfBytesConsumed += decodedTopicName.numberOfBytesConsumed;
int qos = buffer.readUnsignedByte() & 0x03;
//See 3.8.3.1 Subscription Options of MQTT 5.0 specification for optionByte details
final short optionByte = buffer.readUnsignedByte();
MqttQoS qos = MqttQoS.valueOf(optionByte & 0x03);
boolean noLocal = ((optionByte & 0x04) >> 2) == 1;
boolean retainAsPublished = ((optionByte & 0x08) >> 3) == 1;
RetainedHandlingPolicy retainHandling = RetainedHandlingPolicy.valueOf((optionByte & 0x30) >> 4);
final MqttSubscriptionOption subscriptionOption = new MqttSubscriptionOption(qos,
noLocal,
retainAsPublished,
retainHandling);
numberOfBytesConsumed++;
subscribeTopics.add(new MqttTopicSubscription(decodedTopicName.value, MqttQoS.valueOf(qos)));
subscribeTopics.add(new MqttTopicSubscription(decodedTopicName.value, subscriptionOption));
}
return new Result<>(new MqttSubscribePayload(subscribeTopics), numberOfBytesConsumed);
}
@ -402,6 +559,20 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
return new Result<>(new MqttSubAckPayload(grantedQos), numberOfBytesConsumed);
}
private static Result<MqttUnsubAckPayload> decodeUnsubAckPayload(
ChannelHandlerContext ctx,
ByteBuf buffer,
int bytesRemainingInVariablePart) {
final List<Short> reasonCodes = new ArrayList<Short>(bytesRemainingInVariablePart);
int numberOfBytesConsumed = 0;
while (numberOfBytesConsumed < bytesRemainingInVariablePart) {
short reasonCode = buffer.readUnsignedByte();
numberOfBytesConsumed++;
reasonCodes.add(reasonCode);
}
return new Result<MqttUnsubAckPayload>(new MqttUnsubAckPayload(reasonCodes), numberOfBytesConsumed);
}
private static Result<MqttUnsubscribePayload> decodeUnsubscribePayload(
ByteBuf buffer,
int bytesRemainingInVariablePart) {
@ -464,6 +635,31 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
return new Result<>(result, numberOfBytesConsumed);
}
/**
* See 1.5.5 Variable Byte Integer section of MQTT 5.0 specification for encoding/decoding rules
*
* @param buffer the buffer to decode from
* @return decoded integer
*/
private static Result<Integer> decodeVariableByteInteger(ByteBuf buffer) {
int remainingLength = 0;
int multiplier = 1;
short digit;
int loops = 0;
do {
digit = buffer.readUnsignedByte();
remainingLength += (digit & 127) * multiplier;
multiplier *= 128;
loops++;
} while ((digit & 128) != 0 && loops < 4);
// MQTT protocol limits Remaining Length to 4 bytes
if (loops == 4 && (digit & 128) != 0) {
return null;
}
return new Result<Integer>(remainingLength, loops);
}
private static final class Result<T> {
private final T value;
@ -474,4 +670,82 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
this.numberOfBytesConsumed = numberOfBytesConsumed;
}
}
private static Result<MqttProperties> decodeProperties(ByteBuf buffer) {
final Result<Integer> propertiesLength = decodeVariableByteInteger(buffer);
int totalPropertiesLength = propertiesLength.value;
int numberOfBytesConsumed = propertiesLength.numberOfBytesConsumed;
MqttProperties decodedProperties = new MqttProperties();
while (numberOfBytesConsumed < totalPropertiesLength) {
Result<Integer> propertyId = decodeVariableByteInteger(buffer);
numberOfBytesConsumed += propertyId.numberOfBytesConsumed;
MqttProperties.MqttPropertyType propertyType = MqttProperties.MqttPropertyType.valueOf(propertyId.value);
switch (propertyType) {
case PAYLOAD_FORMAT_INDICATOR:
case REQUEST_PROBLEM_INFORMATION:
case REQUEST_RESPONSE_INFORMATION:
case MAXIMUM_QOS:
case RETAIN_AVAILABLE:
case WILDCARD_SUBSCRIPTION_AVAILABLE:
case SUBSCRIPTION_IDENTIFIER_AVAILABLE:
case SHARED_SUBSCRIPTION_AVAILABLE:
final int b1 = buffer.readUnsignedByte();
numberOfBytesConsumed++;
decodedProperties.add(new MqttProperties.IntegerProperty(propertyId.value, b1));
break;
case SERVER_KEEP_ALIVE:
case RECEIVE_MAXIMUM:
case TOPIC_ALIAS_MAXIMUM:
case TOPIC_ALIAS:
final Result<Integer> int2BytesResult = decodeMsbLsb(buffer);
numberOfBytesConsumed += int2BytesResult.numberOfBytesConsumed;
decodedProperties.add(new MqttProperties.IntegerProperty(propertyId.value, int2BytesResult.value));
break;
case PUBLICATION_EXPIRY_INTERVAL:
case SESSION_EXPIRY_INTERVAL:
case WILL_DELAY_INTERVAL:
case MAXIMUM_PACKET_SIZE:
final int maxPacketSize = buffer.readInt();
numberOfBytesConsumed += 4;
decodedProperties.add(new MqttProperties.IntegerProperty(propertyId.value, maxPacketSize));
break;
case SUBSCRIPTION_IDENTIFIER:
Result<Integer> vbIntegerResult = decodeVariableByteInteger(buffer);
numberOfBytesConsumed += vbIntegerResult.numberOfBytesConsumed;
decodedProperties.add(new MqttProperties.IntegerProperty(propertyId.value, vbIntegerResult.value));
break;
case CONTENT_TYPE:
case RESPONSE_TOPIC:
case ASSIGNED_CLIENT_IDENTIFIER:
case AUTHENTICATION_METHOD:
case RESPONSE_INFORMATION:
case SERVER_REFERENCE:
case REASON_STRING:
final Result<String> stringResult = decodeString(buffer);
numberOfBytesConsumed += stringResult.numberOfBytesConsumed;
decodedProperties.add(new MqttProperties.StringProperty(propertyId.value, stringResult.value));
break;
case USER_PROPERTY:
final Result<String> keyResult = decodeString(buffer);
final Result<String> valueResult = decodeString(buffer);
numberOfBytesConsumed += keyResult.numberOfBytesConsumed;
numberOfBytesConsumed += valueResult.numberOfBytesConsumed;
decodedProperties.add(new MqttProperties.UserProperty(keyResult.value, valueResult.value));
break;
case CORRELATION_DATA:
case AUTHENTICATION_DATA:
final Result<byte[]> binaryDataResult = decodeByteArray(buffer);
numberOfBytesConsumed += binaryDataResult.numberOfBytesConsumed;
decodedProperties.add(new MqttProperties.BinaryProperty(propertyId.value, binaryDataResult.value));
break;
default:
//shouldn't reach here
throw new DecoderException("Unknown property type: " + propertyType);
}
}
return new Result<MqttProperties>(decodedProperties, numberOfBytesConsumed);
}
}

595
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttEncoder.java
View File

@ -18,9 +18,10 @@ package io.netty.handler.codec.mqtt;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.DecoderException;
import io.netty.handler.codec.EncoderException;
import io.netty.handler.codec.MessageToMessageEncoder;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.EmptyArrays;
@ -32,6 +33,8 @@ import static io.netty.handler.codec.mqtt.MqttCodecUtil.*;
/**
* Encodes Mqtt messages into bytes following the protocol specification v3.1
* as described here <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html">MQTTV3.1</a>
* or v5.0 as described here <a href="https://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html">MQTTv5.0</a> -
* depending on the version specified in the first CONNECT message that goes through the channel.
*/
@ChannelHandler.Sharable
public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
@ -42,49 +45,57 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
@Override
protected void encode(ChannelHandlerContext ctx, MqttMessage msg, List<Object> out) throws Exception {
out.add(doEncode(ctx.alloc(), msg));
out.add(doEncode(ctx, msg));
}
/**
* This is the main encoding method.
* It's only visible for testing.
*
* @param byteBufAllocator Allocates ByteBuf
* @param message MQTT message to encode
* @return ByteBuf with encoded bytes
*/
static ByteBuf doEncode(ByteBufAllocator byteBufAllocator, MqttMessage message) {
static ByteBuf doEncode(ChannelHandlerContext ctx,
MqttMessage message) {
switch (message.fixedHeader().messageType()) {
case CONNECT:
return encodeConnectMessage(byteBufAllocator, (MqttConnectMessage) message);
return encodeConnectMessage(ctx, (MqttConnectMessage) message);
case CONNACK:
return encodeConnAckMessage(byteBufAllocator, (MqttConnAckMessage) message);
return encodeConnAckMessage(ctx, (MqttConnAckMessage) message);
case PUBLISH:
return encodePublishMessage(byteBufAllocator, (MqttPublishMessage) message);
return encodePublishMessage(ctx, (MqttPublishMessage) message);
case SUBSCRIBE:
return encodeSubscribeMessage(byteBufAllocator, (MqttSubscribeMessage) message);
return encodeSubscribeMessage(ctx, (MqttSubscribeMessage) message);
case UNSUBSCRIBE:
return encodeUnsubscribeMessage(byteBufAllocator, (MqttUnsubscribeMessage) message);
return encodeUnsubscribeMessage(ctx, (MqttUnsubscribeMessage) message);
case SUBACK:
return encodeSubAckMessage(byteBufAllocator, (MqttSubAckMessage) message);
return encodeSubAckMessage(ctx, (MqttSubAckMessage) message);
case UNSUBACK:
if (message instanceof MqttUnsubAckMessage) {
return encodeUnsubAckMessage(ctx, (MqttUnsubAckMessage) message);
}
return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ctx.alloc(), message);
case PUBACK:
case PUBREC:
case PUBREL:
case PUBCOMP:
return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(byteBufAllocator, message);
return encodePubReplyMessage(ctx, message);
case DISCONNECT:
case AUTH:
return encodeReasonCodePlusPropertiesMessage(ctx, message);
case PINGREQ:
case PINGRESP:
case DISCONNECT:
return encodeMessageWithOnlySingleByteFixedHeader(byteBufAllocator, message);
return encodeMessageWithOnlySingleByteFixedHeader(ctx.alloc(), message);
default:
throw new IllegalArgumentException(
@ -93,7 +104,7 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
}
private static ByteBuf encodeConnectMessage(
ByteBufAllocator byteBufAllocator,
ChannelHandlerContext ctx,
MqttConnectMessage message) {
int payloadBufferSize = 0;
@ -102,10 +113,11 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
MqttConnectPayload payload = message.payload();
MqttVersion mqttVersion = MqttVersion.fromProtocolNameAndLevel(variableHeader.name(),
(byte) variableHeader.version());
MqttCodecUtil.setMqttVersion(ctx, mqttVersion);
// as MQTT 3.1 & 3.1.1 spec, If the User Name Flag is set to 0, the Password Flag MUST be set to 0
if (!variableHeader.hasUserName() && variableHeader.hasPassword()) {
throw new DecoderException("Without a username, the password MUST be not set");
throw new EncoderException("Without a username, the password MUST be not set");
}
// Client id
@ -138,40 +150,62 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
payloadBufferSize += 2 + passwordBytes.length;
}
// Fixed header
// Fixed and variable header
byte[] protocolNameBytes = mqttVersion.protocolNameBytes();
int variableHeaderBufferSize = 2 + protocolNameBytes.length + 4;
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(
mqttVersion,
ctx.alloc(),
message.variableHeader().properties());
try {
final ByteBuf willPropertiesBuf;
if (variableHeader.isWillFlag()) {
willPropertiesBuf = encodePropertiesIfNeeded(mqttVersion, ctx.alloc(), payload.willProperties());
payloadBufferSize += willPropertiesBuf.readableBytes();
} else {
willPropertiesBuf = Unpooled.EMPTY_BUFFER;
}
try {
int variableHeaderBufferSize = 2 + protocolNameBytes.length + 4 + propertiesBuf.readableBytes();
buf.writeShort(protocolNameBytes.length);
buf.writeBytes(protocolNameBytes);
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
buf.writeByte(variableHeader.version());
buf.writeByte(getConnVariableHeaderFlag(variableHeader));
buf.writeShort(variableHeader.keepAliveTimeSeconds());
buf.writeShort(protocolNameBytes.length);
buf.writeBytes(protocolNameBytes);
// Payload
buf.writeShort(clientIdentifierBytes.length);
buf.writeBytes(clientIdentifierBytes, 0, clientIdentifierBytes.length);
if (variableHeader.isWillFlag()) {
buf.writeShort(willTopicBytes.length);
buf.writeBytes(willTopicBytes, 0, willTopicBytes.length);
buf.writeShort(willMessageBytes.length);
buf.writeBytes(willMessageBytes, 0, willMessageBytes.length);
buf.writeByte(variableHeader.version());
buf.writeByte(getConnVariableHeaderFlag(variableHeader));
buf.writeShort(variableHeader.keepAliveTimeSeconds());
buf.writeBytes(propertiesBuf);
// Payload
buf.writeShort(clientIdentifierBytes.length);
buf.writeBytes(clientIdentifierBytes, 0, clientIdentifierBytes.length);
if (variableHeader.isWillFlag()) {
buf.writeBytes(willPropertiesBuf);
buf.writeShort(willTopicBytes.length);
buf.writeBytes(willTopicBytes, 0, willTopicBytes.length);
buf.writeShort(willMessageBytes.length);
buf.writeBytes(willMessageBytes, 0, willMessageBytes.length);
}
if (variableHeader.hasUserName()) {
buf.writeShort(userNameBytes.length);
buf.writeBytes(userNameBytes, 0, userNameBytes.length);
}
if (variableHeader.hasPassword()) {
buf.writeShort(passwordBytes.length);
buf.writeBytes(passwordBytes, 0, passwordBytes.length);
}
return buf;
} finally {
willPropertiesBuf.release();
}
} finally {
propertiesBuf.release();
}
if (variableHeader.hasUserName()) {
buf.writeShort(userNameBytes.length);
buf.writeBytes(userNameBytes, 0, userNameBytes.length);
}
if (variableHeader.hasPassword()) {
buf.writeShort(passwordBytes.length);
buf.writeBytes(passwordBytes, 0, passwordBytes.length);
}
return buf;
}
private static int getConnVariableHeaderFlag(MqttConnectVariableHeader variableHeader) {
@ -196,114 +230,193 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
}
private static ByteBuf encodeConnAckMessage(
ByteBufAllocator byteBufAllocator,
ChannelHandlerContext ctx,
MqttConnAckMessage message) {
ByteBuf buf = byteBufAllocator.buffer(4);
buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
buf.writeByte(2);
buf.writeByte(message.variableHeader().isSessionPresent() ? 0x01 : 0x00);
buf.writeByte(message.variableHeader().connectReturnCode().byteValue());
final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
ctx.alloc(),
message.variableHeader().properties());
return buf;
try {
ByteBuf buf = ctx.alloc().buffer(4 + propertiesBuf.readableBytes());
buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
writeVariableLengthInt(buf, 2 + propertiesBuf.readableBytes());
buf.writeByte(message.variableHeader().isSessionPresent() ? 0x01 : 0x00);
buf.writeByte(message.variableHeader().connectReturnCode().byteValue());
buf.writeBytes(propertiesBuf);
return buf;
} finally {
propertiesBuf.release();
}
}
private static ByteBuf encodeSubscribeMessage(
ByteBufAllocator byteBufAllocator,
ChannelHandlerContext ctx,
MqttSubscribeMessage message) {
int variableHeaderBufferSize = 2;
int payloadBufferSize = 0;
MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
ctx.alloc(),
message.idAndPropertiesVariableHeader().properties());
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttMessageIdVariableHeader variableHeader = message.variableHeader();
MqttSubscribePayload payload = message.payload();
try {
final int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
int payloadBufferSize = 0;
for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
String topicName = topic.topicName();
byte[] topicNameBytes = encodeStringUtf8(topicName);
payloadBufferSize += 2 + topicNameBytes.length;
payloadBufferSize += 1;
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttMessageIdVariableHeader variableHeader = message.variableHeader();
MqttSubscribePayload payload = message.payload();
for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
String topicName = topic.topicName();
byte[] topicNameBytes = encodeStringUtf8(topicName);
payloadBufferSize += 2 + topicNameBytes.length;
payloadBufferSize += 1;
}
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
// Variable Header
int messageId = variableHeader.messageId();
buf.writeShort(messageId);
buf.writeBytes(propertiesBuf);
// Payload
for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
writeUTF8String(buf, topic.topicName());
final MqttSubscriptionOption option = topic.option();
int optionEncoded = option.retainHandling().value() << 4;
if (option.isRetainAsPublished()) {
optionEncoded |= 0x08;
}
if (option.isNoLocal()) {
optionEncoded |= 0x04;
}
optionEncoded |= option.qos().value();
buf.writeByte(optionEncoded);
}
return buf;
} finally {
propertiesBuf.release();
}
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
// Variable Header
int messageId = variableHeader.messageId();
buf.writeShort(messageId);
// Payload
for (MqttTopicSubscription topic : payload.topicSubscriptions()) {
String topicName = topic.topicName();
byte[] topicNameBytes = encodeStringUtf8(topicName);
buf.writeShort(topicNameBytes.length);
buf.writeBytes(topicNameBytes, 0, topicNameBytes.length);
buf.writeByte(topic.qualityOfService().value());
}
return buf;
}
private static ByteBuf encodeUnsubscribeMessage(
ByteBufAllocator byteBufAllocator,
ChannelHandlerContext ctx,
MqttUnsubscribeMessage message) {
int variableHeaderBufferSize = 2;
int payloadBufferSize = 0;
MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
ctx.alloc(),
message.idAndPropertiesVariableHeader().properties());
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttMessageIdVariableHeader variableHeader = message.variableHeader();
MqttUnsubscribePayload payload = message.payload();
try {
final int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
int payloadBufferSize = 0;
for (String topicName : payload.topics()) {
byte[] topicNameBytes = encodeStringUtf8(topicName);
payloadBufferSize += 2 + topicNameBytes.length;
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttMessageIdVariableHeader variableHeader = message.variableHeader();
MqttUnsubscribePayload payload = message.payload();
for (String topicName : payload.topics()) {
byte[] topicNameBytes = encodeStringUtf8(topicName);
payloadBufferSize += 2 + topicNameBytes.length;
}
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
// Variable Header
int messageId = variableHeader.messageId();
buf.writeShort(messageId);
buf.writeBytes(propertiesBuf);
// Payload
for (String topicName : payload.topics()) {
byte[] topicNameBytes = encodeStringUtf8(topicName);
buf.writeShort(topicNameBytes.length);
buf.writeBytes(topicNameBytes, 0, topicNameBytes.length);
}
return buf;
} finally {
propertiesBuf.release();
}
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
// Variable Header
int messageId = variableHeader.messageId();
buf.writeShort(messageId);
// Payload
for (String topicName : payload.topics()) {
byte[] topicNameBytes = encodeStringUtf8(topicName);
buf.writeShort(topicNameBytes.length);
buf.writeBytes(topicNameBytes, 0, topicNameBytes.length);
}
return buf;
}
private static ByteBuf encodeSubAckMessage(
ByteBufAllocator byteBufAllocator,
ChannelHandlerContext ctx,
MqttSubAckMessage message) {
int variableHeaderBufferSize = 2;
int payloadBufferSize = message.payload().grantedQoSLevels().size();
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
writeVariableLengthInt(buf, variablePartSize);
buf.writeShort(message.variableHeader().messageId());
for (int qos : message.payload().grantedQoSLevels()) {
buf.writeByte(qos);
}
MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
ctx.alloc(),
message.idAndPropertiesVariableHeader().properties());
try {
int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
int payloadBufferSize = message.payload().grantedQoSLevels().size();
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
writeVariableLengthInt(buf, variablePartSize);
buf.writeShort(message.variableHeader().messageId());
buf.writeBytes(propertiesBuf);
for (int qos : message.payload().grantedQoSLevels()) {
buf.writeByte(qos);
}
return buf;
return buf;
} finally {
propertiesBuf.release();
}
}
private static ByteBuf encodeUnsubAckMessage(
ChannelHandlerContext ctx,
MqttUnsubAckMessage message) {
if (message.variableHeader() instanceof MqttMessageIdAndPropertiesVariableHeader) {
MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
ctx.alloc(),
message.idAndPropertiesVariableHeader().properties());
try {
int variableHeaderBufferSize = 2 + propertiesBuf.readableBytes();
int payloadBufferSize = message.payload().unsubscribeReasonCodes().size();
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(message.fixedHeader()));
writeVariableLengthInt(buf, variablePartSize);
buf.writeShort(message.variableHeader().messageId());
buf.writeBytes(propertiesBuf);
for (Short reasonCode : message.payload().unsubscribeReasonCodes()) {
buf.writeByte(reasonCode);
}
return buf;
} finally {
propertiesBuf.release();
}
} else {
return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ctx.alloc(), message);
}
}
private static ByteBuf encodePublishMessage(
ByteBufAllocator byteBufAllocator,
ChannelHandlerContext ctx,
MqttPublishMessage message) {
MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttPublishVariableHeader variableHeader = message.variableHeader();
ByteBuf payload = message.payload().duplicate();
@ -311,23 +424,76 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
String topicName = variableHeader.topicName();
byte[] topicNameBytes = encodeStringUtf8(topicName);
int variableHeaderBufferSize = 2 + topicNameBytes.length +
(mqttFixedHeader.qosLevel().value() > 0 ? 2 : 0);
int payloadBufferSize = payload.readableBytes();
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf propertiesBuf = encodePropertiesIfNeeded(mqttVersion,
ctx.alloc(),
message.variableHeader().properties());
ByteBuf buf = byteBufAllocator.buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
buf.writeShort(topicNameBytes.length);
buf.writeBytes(topicNameBytes);
if (mqttFixedHeader.qosLevel().value() > 0) {
buf.writeShort(variableHeader.packetId());
try {
int variableHeaderBufferSize = 2 + topicNameBytes.length +
(mqttFixedHeader.qosLevel().value() > 0 ? 2 : 0) + propertiesBuf.readableBytes();
int payloadBufferSize = payload.readableBytes();
int variablePartSize = variableHeaderBufferSize + payloadBufferSize;
int fixedHeaderBufferSize = 1 + getVariableLengthInt(variablePartSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variablePartSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variablePartSize);
buf.writeShort(topicNameBytes.length);
buf.writeBytes(topicNameBytes);
if (mqttFixedHeader.qosLevel().value() > 0) {
buf.writeShort(variableHeader.packetId());
}
buf.writeBytes(propertiesBuf);
buf.writeBytes(payload);
return buf;
} finally {
propertiesBuf.release();
}
buf.writeBytes(payload);
}
return buf;
private static ByteBuf encodePubReplyMessage(ChannelHandlerContext ctx,
MqttMessage message) {
if (message.variableHeader() instanceof MqttPubReplyMessageVariableHeader) {
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttPubReplyMessageVariableHeader variableHeader =
(MqttPubReplyMessageVariableHeader) message.variableHeader();
int msgId = variableHeader.messageId();
final ByteBuf propertiesBuf;
final boolean includeReasonCode;
final int variableHeaderBufferSize;
final MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
if (mqttVersion == MqttVersion.MQTT_5 &&
(variableHeader.reasonCode() != MqttPubReplyMessageVariableHeader.REASON_CODE_OK ||
!variableHeader.properties().isEmpty())) {
propertiesBuf = encodeProperties(ctx.alloc(), variableHeader.properties());
includeReasonCode = true;
variableHeaderBufferSize = 3 + propertiesBuf.readableBytes();
} else {
propertiesBuf = Unpooled.EMPTY_BUFFER;
includeReasonCode = false;
variableHeaderBufferSize = 2;
}
try {
final int fixedHeaderBufferSize = 1 + getVariableLengthInt(variableHeaderBufferSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variableHeaderBufferSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variableHeaderBufferSize);
buf.writeShort(msgId);
if (includeReasonCode) {
buf.writeByte(variableHeader.reasonCode());
}
buf.writeBytes(propertiesBuf);
return buf;
} finally {
propertiesBuf.release();
}
} else {
return encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(ctx.alloc(), message);
}
}
private static ByteBuf encodeMessageWithOnlySingleByteFixedHeaderAndMessageId(
@ -347,6 +513,49 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
return buf;
}
private static ByteBuf encodeReasonCodePlusPropertiesMessage(
ChannelHandlerContext ctx,
MqttMessage message) {
if (message.variableHeader() instanceof MqttReasonCodeAndPropertiesVariableHeader) {
MqttVersion mqttVersion = MqttCodecUtil.getMqttVersion(ctx);
MqttFixedHeader mqttFixedHeader = message.fixedHeader();
MqttReasonCodeAndPropertiesVariableHeader variableHeader =
(MqttReasonCodeAndPropertiesVariableHeader) message.variableHeader();
final ByteBuf propertiesBuf;
final boolean includeReasonCode;
final int variableHeaderBufferSize;
if (mqttVersion == MqttVersion.MQTT_5 &&
(variableHeader.reasonCode() != MqttReasonCodeAndPropertiesVariableHeader.REASON_CODE_OK ||
!variableHeader.properties().isEmpty())) {
propertiesBuf = encodeProperties(ctx.alloc(), variableHeader.properties());
includeReasonCode = true;
variableHeaderBufferSize = 1 + propertiesBuf.readableBytes();
} else {
propertiesBuf = Unpooled.EMPTY_BUFFER;
includeReasonCode = false;
variableHeaderBufferSize = 0;
}
try {
final int fixedHeaderBufferSize = 1 + getVariableLengthInt(variableHeaderBufferSize);
ByteBuf buf = ctx.alloc().buffer(fixedHeaderBufferSize + variableHeaderBufferSize);
buf.writeByte(getFixedHeaderByte1(mqttFixedHeader));
writeVariableLengthInt(buf, variableHeaderBufferSize);
if (includeReasonCode) {
buf.writeByte(variableHeader.reasonCode());
}
buf.writeBytes(propertiesBuf);
return buf;
} finally {
propertiesBuf.release();
}
} else {
return encodeMessageWithOnlySingleByteFixedHeader(ctx.alloc(), message);
}
}
private static ByteBuf encodeMessageWithOnlySingleByteFixedHeader(
ByteBufAllocator byteBufAllocator,
MqttMessage message) {
@ -358,6 +567,104 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
return buf;
}
private static ByteBuf encodePropertiesIfNeeded(MqttVersion mqttVersion,
ByteBufAllocator byteBufAllocator,
MqttProperties mqttProperties) {
if (mqttVersion == MqttVersion.MQTT_5) {
return encodeProperties(byteBufAllocator, mqttProperties);
}
return Unpooled.EMPTY_BUFFER;
}
private static ByteBuf encodeProperties(ByteBufAllocator byteBufAllocator,
MqttProperties mqttProperties) {
ByteBuf propertiesHeaderBuf = byteBufAllocator.buffer();
// encode also the Properties part
try {
ByteBuf propertiesBuf = byteBufAllocator.buffer();
try {
for (MqttProperties.MqttProperty property : mqttProperties.listAll()) {
MqttProperties.MqttPropertyType propertyType =
MqttProperties.MqttPropertyType.valueOf(property.propertyId);
switch (propertyType) {
case PAYLOAD_FORMAT_INDICATOR:
case REQUEST_PROBLEM_INFORMATION:
case REQUEST_RESPONSE_INFORMATION:
case MAXIMUM_QOS:
case RETAIN_AVAILABLE:
case WILDCARD_SUBSCRIPTION_AVAILABLE:
case SUBSCRIPTION_IDENTIFIER_AVAILABLE:
case SHARED_SUBSCRIPTION_AVAILABLE:
writeVariableLengthInt(propertiesBuf, property.propertyId);
final byte bytePropValue = ((MqttProperties.IntegerProperty) property).value.byteValue();
propertiesBuf.writeByte(bytePropValue);
break;
case SERVER_KEEP_ALIVE:
case RECEIVE_MAXIMUM:
case TOPIC_ALIAS_MAXIMUM:
case TOPIC_ALIAS:
writeVariableLengthInt(propertiesBuf, property.propertyId);
final short twoBytesInPropValue =
((MqttProperties.IntegerProperty) property).value.shortValue();
propertiesBuf.writeShort(twoBytesInPropValue);
break;
case PUBLICATION_EXPIRY_INTERVAL:
case SESSION_EXPIRY_INTERVAL:
case WILL_DELAY_INTERVAL:
case MAXIMUM_PACKET_SIZE:
writeVariableLengthInt(propertiesBuf, property.propertyId);
final int fourBytesIntPropValue = ((MqttProperties.IntegerProperty) property).value;
propertiesBuf.writeInt(fourBytesIntPropValue);
break;
case SUBSCRIPTION_IDENTIFIER:
writeVariableLengthInt(propertiesBuf, property.propertyId);
final int vbi = ((MqttProperties.IntegerProperty) property).value;
writeVariableLengthInt(propertiesBuf, vbi);
break;
case CONTENT_TYPE:
case RESPONSE_TOPIC:
case ASSIGNED_CLIENT_IDENTIFIER:
case AUTHENTICATION_METHOD:
case RESPONSE_INFORMATION:
case SERVER_REFERENCE:
case REASON_STRING:
writeVariableLengthInt(propertiesBuf, property.propertyId);
writeUTF8String(propertiesBuf, ((MqttProperties.StringProperty) property).value);
break;
case USER_PROPERTY:
final List<MqttProperties.StringPair> pairs =
((MqttProperties.UserProperties) property).value;
for (MqttProperties.StringPair pair : pairs) {
writeVariableLengthInt(propertiesBuf, property.propertyId);
writeUTF8String(propertiesBuf, pair.key);
writeUTF8String(propertiesBuf, pair.value);
}
break;
case CORRELATION_DATA:
case AUTHENTICATION_DATA:
writeVariableLengthInt(propertiesBuf, property.propertyId);
final byte[] binaryPropValue = ((MqttProperties.BinaryProperty) property).value;
propertiesBuf.writeShort(binaryPropValue.length);
propertiesBuf.writeBytes(binaryPropValue, 0, binaryPropValue.length);
break;
default:
//shouldn't reach here
throw new EncoderException("Unknown property type: " + propertyType);
}
}
writeVariableLengthInt(propertiesHeaderBuf, propertiesBuf.readableBytes());
propertiesHeaderBuf.writeBytes(propertiesBuf);
return propertiesHeaderBuf;
} finally {
propertiesBuf.release();
}
} catch (RuntimeException e) {
propertiesHeaderBuf.release();
throw e;
}
}
private static int getFixedHeaderByte1(MqttFixedHeader header) {
int ret = 0;
ret |= header.messageType().value() << 4;
@ -382,6 +689,12 @@ public final class MqttEncoder extends MessageToMessageEncoder<MqttMessage> {
} while (num > 0);
}
static void writeUTF8String(ByteBuf buf, String s) {
byte[] sBytes = encodeStringUtf8(s);
buf.writeShort(sBytes.length);
buf.writeBytes(sBytes, 0, sBytes.length);
}
private static int getVariableLengthInt(int num) {
int count = 0;
do {

265
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttMessageBuilders.java
View File

@ -20,6 +20,7 @@ import io.netty.buffer.Unpooled;
import io.netty.util.CharsetUtil;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public final class MqttMessageBuilders {
@ -30,6 +31,7 @@ public final class MqttMessageBuilders {
private MqttQoS qos;
private ByteBuf payload;
private int messageId;
private MqttProperties mqttProperties;
PublishBuilder() {
}
@ -59,9 +61,15 @@ public final class MqttMessageBuilders {
return this;
}
public PublishBuilder properties(MqttProperties properties) {
this.mqttProperties = properties;
return this;
}
public MqttPublishMessage build() {
MqttFixedHeader mqttFixedHeader = new MqttFixedHeader(MqttMessageType.PUBLISH, false, qos, retained, 0);
MqttPublishVariableHeader mqttVariableHeader = new MqttPublishVariableHeader(topic, messageId);
MqttPublishVariableHeader mqttVariableHeader =
new MqttPublishVariableHeader(topic, messageId, mqttProperties);
return new MqttPublishMessage(mqttFixedHeader, mqttVariableHeader, Unpooled.buffer().writeBytes(payload));
}
}
@ -74,6 +82,7 @@ public final class MqttMessageBuilders {
private boolean hasUser;
private boolean hasPassword;
private int keepAliveSecs;
private MqttProperties willProperties = MqttProperties.NO_PROPERTIES;
private boolean willFlag;
private boolean willRetain;
private MqttQoS willQos = MqttQoS.AT_MOST_ONCE;
@ -81,6 +90,7 @@ public final class MqttMessageBuilders {
private byte[] willMessage;
private String username;
private byte[] password;
private MqttProperties properties = MqttProperties.NO_PROPERTIES;
ConnectBuilder() {
}
@ -139,6 +149,11 @@ public final class MqttMessageBuilders {
return this;
}
public ConnectBuilder willProperties(MqttProperties willProperties) {
this.willProperties = willProperties;
return this;
}
public ConnectBuilder hasUser(boolean value) {
this.hasUser = value;
return this;
@ -170,6 +185,11 @@ public final class MqttMessageBuilders {
return this;
}
public ConnectBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public MqttConnectMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.CONNECT, false, MqttQoS.AT_MOST_ONCE, false, 0);
@ -183,9 +203,10 @@ public final class MqttMessageBuilders {
willQos.value(),
willFlag,
cleanSession,
keepAliveSecs);
keepAliveSecs,
properties);
MqttConnectPayload mqttConnectPayload =
new MqttConnectPayload(clientId, willTopic, willMessage, username, password);
new MqttConnectPayload(clientId, willProperties, willTopic, willMessage, username, password);
return new MqttConnectMessage(mqttFixedHeader, mqttConnectVariableHeader, mqttConnectPayload);
}
}
@ -194,36 +215,54 @@ public final class MqttMessageBuilders {
private List<MqttTopicSubscription> subscriptions;
private int messageId;
private MqttProperties properties;
SubscribeBuilder() {
}
public SubscribeBuilder addSubscription(MqttQoS qos, String topic) {
if (subscriptions == null) {
subscriptions = new ArrayList<>(5);
}
ensureSubscriptionsExist();
subscriptions.add(new MqttTopicSubscription(topic, qos));
return this;
}
public SubscribeBuilder addSubscription(String topic, MqttSubscriptionOption option) {
ensureSubscriptionsExist();
subscriptions.add(new MqttTopicSubscription(topic, option));
return this;
}
public SubscribeBuilder messageId(int messageId) {
this.messageId = messageId;
return this;
}
public SubscribeBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public MqttSubscribeMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.SUBSCRIBE, false, MqttQoS.AT_LEAST_ONCE, false, 0);
MqttMessageIdVariableHeader mqttVariableHeader = MqttMessageIdVariableHeader.from(messageId);
MqttMessageIdAndPropertiesVariableHeader mqttVariableHeader =
new MqttMessageIdAndPropertiesVariableHeader(messageId, properties);
MqttSubscribePayload mqttSubscribePayload = new MqttSubscribePayload(subscriptions);
return new MqttSubscribeMessage(mqttFixedHeader, mqttVariableHeader, mqttSubscribePayload);
}
private void ensureSubscriptionsExist() {
if (subscriptions == null) {
subscriptions = new ArrayList<MqttTopicSubscription>(5);
}
}
}
public static final class UnsubscribeBuilder {
private List<String> topicFilters;
private int messageId;
private MqttProperties properties;
UnsubscribeBuilder() {
}
@ -241,10 +280,16 @@ public final class MqttMessageBuilders {
return this;
}
public UnsubscribeBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public MqttUnsubscribeMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.UNSUBSCRIBE, false, MqttQoS.AT_LEAST_ONCE, false, 0);
MqttMessageIdVariableHeader mqttVariableHeader = MqttMessageIdVariableHeader.from(messageId);
MqttMessageIdAndPropertiesVariableHeader mqttVariableHeader =
new MqttMessageIdAndPropertiesVariableHeader(messageId, properties);
MqttUnsubscribePayload mqttSubscribePayload = new MqttUnsubscribePayload(topicFilters);
return new MqttUnsubscribeMessage(mqttFixedHeader, mqttVariableHeader, mqttSubscribePayload);
}
@ -254,6 +299,7 @@ public final class MqttMessageBuilders {
private MqttConnectReturnCode returnCode;
private boolean sessionPresent;
private MqttProperties properties = MqttProperties.NO_PROPERTIES;
ConnAckBuilder() {
}
@ -268,15 +314,196 @@ public final class MqttMessageBuilders {
return this;
}
public ConnAckBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public MqttConnAckMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.CONNACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttConnAckVariableHeader mqttConnAckVariableHeader =
new MqttConnAckVariableHeader(returnCode, sessionPresent);
new MqttConnAckVariableHeader(returnCode, sessionPresent, properties);
return new MqttConnAckMessage(mqttFixedHeader, mqttConnAckVariableHeader);
}
}
public static final class PubAckBuilder {
private short packetId;
private byte reasonCode;
private MqttProperties properties;
PubAckBuilder() {
}
public PubAckBuilder reasonCode(byte reasonCode) {
this.reasonCode = reasonCode;
return this;
}
public PubAckBuilder packetId(short packetId) {
this.packetId = packetId;
return this;
}
public PubAckBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public MqttMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.PUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttPubReplyMessageVariableHeader mqttPubAckVariableHeader =
new MqttPubReplyMessageVariableHeader(packetId, reasonCode, properties);
return new MqttMessage(mqttFixedHeader, mqttPubAckVariableHeader);
}
}
public static final class SubAckBuilder {
private short packetId;
private MqttProperties properties;
private final List<MqttQoS> grantedQoses = new ArrayList<MqttQoS>();
SubAckBuilder() {
}
public SubAckBuilder packetId(short packetId) {
this.packetId = packetId;
return this;
}
public SubAckBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public SubAckBuilder addGrantedQos(MqttQoS qos) {
this.grantedQoses.add(qos);
return this;
}
public SubAckBuilder addGrantedQoses(MqttQoS... qoses) {
this.grantedQoses.addAll(Arrays.asList(qoses));
return this;
}
public MqttSubAckMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.SUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttMessageIdAndPropertiesVariableHeader mqttSubAckVariableHeader =
new MqttMessageIdAndPropertiesVariableHeader(packetId, properties);
//transform to primitive types
int[] grantedQoses = new int[this.grantedQoses.size()];
int i = 0;
for (MqttQoS grantedQos : this.grantedQoses) {
grantedQoses[i++] = grantedQos.value();
}
MqttSubAckPayload subAckPayload = new MqttSubAckPayload(grantedQoses);
return new MqttSubAckMessage(mqttFixedHeader, mqttSubAckVariableHeader, subAckPayload);
}
}
public static final class UnsubAckBuilder {
private short packetId;
private MqttProperties properties;
private final List<Short> reasonCodes = new ArrayList<Short>();
UnsubAckBuilder() {
}
public UnsubAckBuilder packetId(short packetId) {
this.packetId = packetId;
return this;
}
public UnsubAckBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public UnsubAckBuilder addReasonCode(short reasonCode) {
this.reasonCodes.add(reasonCode);
return this;
}
public UnsubAckBuilder addReasonCodes(Short... reasonCodes) {
this.reasonCodes.addAll(Arrays.asList(reasonCodes));
return this;
}
public MqttUnsubAckMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.UNSUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttMessageIdAndPropertiesVariableHeader mqttSubAckVariableHeader =
new MqttMessageIdAndPropertiesVariableHeader(packetId, properties);
MqttUnsubAckPayload subAckPayload = new MqttUnsubAckPayload(reasonCodes);
return new MqttUnsubAckMessage(mqttFixedHeader, mqttSubAckVariableHeader, subAckPayload);
}
}
public static final class DisconnectBuilder {
private MqttProperties properties;
private byte reasonCode;
DisconnectBuilder() {
}
public DisconnectBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public DisconnectBuilder reasonCode(byte reasonCode) {
this.reasonCode = reasonCode;
return this;
}
public MqttMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.DISCONNECT, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttReasonCodeAndPropertiesVariableHeader mqttDisconnectVariableHeader =
new MqttReasonCodeAndPropertiesVariableHeader(reasonCode, properties);
return new MqttMessage(mqttFixedHeader, mqttDisconnectVariableHeader);
}
}
public static final class AuthBuilder {
private MqttProperties properties;
private byte reasonCode;
AuthBuilder() {
}
public AuthBuilder properties(MqttProperties properties) {
this.properties = properties;
return this;
}
public AuthBuilder reasonCode(byte reasonCode) {
this.reasonCode = reasonCode;
return this;
}
public MqttMessage build() {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.AUTH, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttReasonCodeAndPropertiesVariableHeader mqttAuthVariableHeader =
new MqttReasonCodeAndPropertiesVariableHeader(reasonCode, properties);
return new MqttMessage(mqttFixedHeader, mqttAuthVariableHeader);
}
}
public static ConnectBuilder connect() {
return new ConnectBuilder();
}
@ -297,6 +524,26 @@ public final class MqttMessageBuilders {
return new UnsubscribeBuilder();
}
public static PubAckBuilder pubAck() {
return new PubAckBuilder();
}
public static SubAckBuilder subAck() {
return new SubAckBuilder();
}
public static UnsubAckBuilder unsubAck() {
return new UnsubAckBuilder();
}
public static DisconnectBuilder disconnect() {
return new DisconnectBuilder();
}
public static AuthBuilder auth() {
return new AuthBuilder();
}
private MqttMessageBuilders() {
}
}

16
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttMessageFactory.java
View File

@ -38,7 +38,7 @@ public final class MqttMessageFactory {
case SUBSCRIBE:
return new MqttSubscribeMessage(
mqttFixedHeader,
(MqttMessageIdVariableHeader) variableHeader,
(MqttMessageIdAndPropertiesVariableHeader) variableHeader,
(MqttSubscribePayload) payload);
case SUBACK:
@ -50,12 +50,13 @@ public final class MqttMessageFactory {
case UNSUBACK:
return new MqttUnsubAckMessage(
mqttFixedHeader,
(MqttMessageIdVariableHeader) variableHeader);
(MqttMessageIdVariableHeader) variableHeader,
(MqttUnsubAckPayload) payload);
case UNSUBSCRIBE:
return new MqttUnsubscribeMessage(
mqttFixedHeader,
(MqttMessageIdVariableHeader) variableHeader,
(MqttMessageIdAndPropertiesVariableHeader) variableHeader,
(MqttUnsubscribePayload) payload);
case PUBLISH:
@ -65,17 +66,24 @@ public final class MqttMessageFactory {
(ByteBuf) payload);
case PUBACK:
//Having MqttPubReplyMessageVariableHeader or MqttMessageIdVariableHeader
return new MqttPubAckMessage(mqttFixedHeader, (MqttMessageIdVariableHeader) variableHeader);
case PUBREC:
case PUBREL:
case PUBCOMP:
//Having MqttPubReplyMessageVariableHeader or MqttMessageIdVariableHeader
return new MqttMessage(mqttFixedHeader, variableHeader);
case PINGREQ:
case PINGRESP:
case DISCONNECT:
return new MqttMessage(mqttFixedHeader);
case DISCONNECT:
case AUTH:
//Having MqttReasonCodeAndPropertiesVariableHeader
return new MqttMessage(mqttFixedHeader,
(MqttReasonCodeAndPropertiesVariableHeader) variableHeader);
default:
throw new IllegalArgumentException("unknown message type: " + mqttFixedHeader.messageType());
}

47
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttMessageIdAndPropertiesVariableHeader.java Normal file
View File

@ -0,0 +1,47 @@
/*
* Copyright 2020 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:
*
* http://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 io.netty.handler.codec.mqtt;
import io.netty.util.internal.StringUtil;
/**
* Variable Header containing, Packet Id and Properties as in MQTT v5 spec.
*/
public final class MqttMessageIdAndPropertiesVariableHeader extends MqttMessageIdVariableHeader {
private final MqttProperties properties;
public MqttMessageIdAndPropertiesVariableHeader(int messageId, MqttProperties properties) {
super(messageId);
if (messageId < 1 || messageId > 0xffff) {
throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
}
this.properties = MqttProperties.withEmptyDefaults(properties);
}
public MqttProperties properties() {
return properties;
}
@Override
public String toString() {
return StringUtil.simpleClassName(this) + "[" +
"messageId=" + messageId() +
", properties=" + properties +
']';
}
}

8
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttMessageIdVariableHeader.java
View File

@ -22,7 +22,7 @@ import io.netty.util.internal.StringUtil;
* Variable Header containing only Message Id
* See <a href="http://public.dhe.ibm.com/software/dw/webservices/ws-mqtt/mqtt-v3r1.html#msg-id">MQTTV3.1/msg-id</a>
*/
public final class MqttMessageIdVariableHeader {
public class MqttMessageIdVariableHeader {
private final int messageId;
@ -33,7 +33,7 @@ public final class MqttMessageIdVariableHeader {
return new MqttMessageIdVariableHeader(messageId);
}
private MqttMessageIdVariableHeader(int messageId) {
protected MqttMessageIdVariableHeader(int messageId) {
this.messageId = messageId;
}
@ -49,4 +49,8 @@ public final class MqttMessageIdVariableHeader {
.append(']')
.toString();
}
public MqttMessageIdAndPropertiesVariableHeader withEmptyProperties() {
return new MqttMessageIdAndPropertiesVariableHeader(messageId, MqttProperties.NO_PROPERTIES);
}
}

3
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttMessageType.java
View File

@ -33,7 +33,8 @@ public enum MqttMessageType {
UNSUBACK(11),
PINGREQ(12),
PINGRESP(13),
DISCONNECT(14);
DISCONNECT(14),
AUTH(15);
private final int value;

232
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttProperties.java Normal file
View File

@ -0,0 +1,232 @@
/*
* Copyright 2020 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:
*
* http://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 io.netty.handler.codec.mqtt;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.List;
import java.util.ArrayList;
/**
* MQTT Properties container
* */
public final class MqttProperties {
public enum MqttPropertyType {
// single byte properties
PAYLOAD_FORMAT_INDICATOR(0x01),
REQUEST_PROBLEM_INFORMATION(0x17),
REQUEST_RESPONSE_INFORMATION(0x19),
MAXIMUM_QOS(0x24),
RETAIN_AVAILABLE(0x25),
WILDCARD_SUBSCRIPTION_AVAILABLE(0x28),
SUBSCRIPTION_IDENTIFIER_AVAILABLE(0x29),
SHARED_SUBSCRIPTION_AVAILABLE(0x2A),
// two bytes properties
SERVER_KEEP_ALIVE(0x13),
RECEIVE_MAXIMUM(0x21),
TOPIC_ALIAS_MAXIMUM(0x22),
TOPIC_ALIAS(0x23),
// four bytes properties
PUBLICATION_EXPIRY_INTERVAL(0x02),
SESSION_EXPIRY_INTERVAL(0x11),
WILL_DELAY_INTERVAL(0x18),
MAXIMUM_PACKET_SIZE(0x27),
// Variable Byte Integer
SUBSCRIPTION_IDENTIFIER(0x0B),
// UTF-8 Encoded String properties
CONTENT_TYPE(0x03),
RESPONSE_TOPIC(0x08),
ASSIGNED_CLIENT_IDENTIFIER(0x12),
AUTHENTICATION_METHOD(0x15),
RESPONSE_INFORMATION(0x1A),
SERVER_REFERENCE(0x1C),
REASON_STRING(0x1F),
USER_PROPERTY(0x26),
// Binary Data
CORRELATION_DATA(0x09),
AUTHENTICATION_DATA(0x16);
private final int value;
MqttPropertyType(int value) {
this.value = value;
}
public int value() {
return value;
}
public static MqttPropertyType valueOf(int type) {
for (MqttPropertyType t : values()) {
if (t.value == type) {
return t;
}
}
throw new IllegalArgumentException("unknown property type: " + type);
}
}
public static final MqttProperties NO_PROPERTIES = new MqttProperties(
Collections.unmodifiableMap(new HashMap<Integer, MqttProperty>())
);
static MqttProperties withEmptyDefaults(MqttProperties properties) {
if (properties == null) {
return MqttProperties.NO_PROPERTIES;
}
return properties;
}
public abstract static class MqttProperty<T> {
final T value;
final int propertyId;
protected MqttProperty(int propertyId, T value) {
this.propertyId = propertyId;
this.value = value;
}
}
public static final class IntegerProperty extends MqttProperty<Integer> {
public IntegerProperty(int propertyId, Integer value) {
super(propertyId, value);
}
}
public static final class StringProperty extends MqttProperty<String> {
public StringProperty(int propertyId, String value) {
super(propertyId, value);
}
}
public static final class StringPair {
public final String key;
public final String value;
public StringPair(String key, String value) {
this.key = key;
this.value = value;
}
@Override
public int hashCode() {
return key.hashCode() + 31 * value.hashCode();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
StringPair that = (StringPair) obj;
return that.key.equals(this.key) && that.value.equals(this.value);
}
}
//User properties are the only properties that may be included multiple times and
//are the only properties where ordering is required. Therefore, they need a special handling
public static final class UserProperties extends MqttProperty<List<StringPair>> {
public UserProperties() {
super(MqttPropertyType.USER_PROPERTY.value, new ArrayList<StringPair>());
}
/**
* Create user properties from the collection of the String pair values
*
* @param values string pairs. Collection entries are copied, collection itself isn't shared
*/
public UserProperties(Collection<StringPair> values) {
this();
this.value.addAll(values);
}
public void add(StringPair pair) {
this.value.add(pair);
}
public void add(String key, String value) {
this.value.add(new StringPair(key, value));
}
}
public static final class UserProperty extends MqttProperty<StringPair> {
public UserProperty(String key, String value) {
super(MqttPropertyType.USER_PROPERTY.value, new StringPair(key, value));
}
}
public static final class BinaryProperty extends MqttProperty<byte[]> {
public BinaryProperty(int propertyId, byte[] value) {
super(propertyId, value);
}
}
public MqttProperties() {
this(new HashMap<Integer, MqttProperty>());
}
private MqttProperties(Map<Integer, MqttProperty> props) {
this.props = props;
}
private final Map<Integer, MqttProperty> props;
public void add(MqttProperty property) {
if (property.propertyId == MqttPropertyType.USER_PROPERTY.value) {
UserProperties userProps = (UserProperties) props.get(property.propertyId);
if (userProps == null) {
userProps = new UserProperties();
props.put(property.propertyId, userProps);
}
if (property instanceof UserProperty) {
userProps.add(((UserProperty) property).value);
} else {
for (StringPair pair: ((UserProperties) property).value) {
userProps.add(pair);
}
}
} else {
props.put(property.propertyId, property);
}
}
public Collection<? extends MqttProperty> listAll() {
return props.values();
}
public boolean isEmpty() {
return props.isEmpty();
}
public MqttProperty getProperty(int propertyId) {
return props.get(propertyId);
}
}

56
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttPubReplyMessageVariableHeader.java Normal file
View File

@ -0,0 +1,56 @@
/*
* Copyright 2020 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:
*
* http://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 io.netty.handler.codec.mqtt;
import io.netty.util.internal.StringUtil;
/**
* Variable Header containing Packet Id, reason code and Properties as in MQTT v5 spec.
*/
public final class MqttPubReplyMessageVariableHeader extends MqttMessageIdVariableHeader {
private final byte reasonCode;
private final MqttProperties properties;
public static final byte REASON_CODE_OK = 0;
public MqttPubReplyMessageVariableHeader(int messageId, byte reasonCode, MqttProperties properties) {
super(messageId);
if (messageId < 1 || messageId > 0xffff) {
throw new IllegalArgumentException("messageId: " + messageId + " (expected: 1 ~ 65535)");
}
this.reasonCode = reasonCode;
this.properties = MqttProperties.withEmptyDefaults(properties);
}
public byte reasonCode() {
return reasonCode;
}
public MqttProperties properties() {
return properties;
}
@Override
public String toString() {
return StringUtil.simpleClassName(this) + "[" +
"messageId=" + messageId() +
", reasonCode=" + reasonCode +
", properties=" + properties +
']';
}
}

10
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttPublishVariableHeader.java
View File

@ -25,10 +25,16 @@ public final class MqttPublishVariableHeader {
private final String topicName;
private final int packetId;
private final MqttProperties properties;
public MqttPublishVariableHeader(String topicName, int packetId) {
this(topicName, packetId, MqttProperties.NO_PROPERTIES);
}
public MqttPublishVariableHeader(String topicName, int packetId, MqttProperties properties) {
this.topicName = topicName;
this.packetId = packetId;
this.properties = MqttProperties.withEmptyDefaults(properties);
}
public String topicName() {
@ -47,6 +53,10 @@ public final class MqttPublishVariableHeader {
return packetId;
}
public MqttProperties properties() {
return properties;
}
@Override
public String toString() {
return new StringBuilder(StringUtil.simpleClassName(this))

54
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttReasonCodeAndPropertiesVariableHeader.java Normal file
View File

@ -0,0 +1,54 @@
/*
* Copyright 2020 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:
*
* http://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 io.netty.handler.codec.mqtt;
import io.netty.util.internal.StringUtil;
/**
* Variable Header for AUTH and DISCONNECT messages represented by {@link MqttMessage}
*/
public final class MqttReasonCodeAndPropertiesVariableHeader {
private final byte reasonCode;
private final MqttProperties properties;
public static final byte REASON_CODE_OK = 0;
public MqttReasonCodeAndPropertiesVariableHeader(byte reasonCode,
MqttProperties properties) {
this.reasonCode = reasonCode;
this.properties = MqttProperties.withEmptyDefaults(properties);
}
public byte reasonCode() {
return reasonCode;
}
public MqttProperties properties() {
return properties;
}
@Override
public String toString() {
return new StringBuilder(StringUtil.simpleClassName(this))
.append('[')
.append("reasonCode=").append(reasonCode)
.append(", properties=").append(properties)
.append(']')
.toString();
}
}

13
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubAckMessage.java
View File

@ -23,16 +23,27 @@ public final class MqttSubAckMessage extends MqttMessage {
public MqttSubAckMessage(
MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttMessageIdAndPropertiesVariableHeader variableHeader,
MqttSubAckPayload payload) {
super(mqttFixedHeader, variableHeader, payload);
}
public MqttSubAckMessage(
MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttSubAckPayload payload) {
this(mqttFixedHeader, variableHeader.withEmptyProperties(), payload);
}
@Override
public MqttMessageIdVariableHeader variableHeader() {
return (MqttMessageIdVariableHeader) super.variableHeader();
}
public MqttMessageIdAndPropertiesVariableHeader idAndPropertiesVariableHeader() {
return (MqttMessageIdAndPropertiesVariableHeader) super.variableHeader();
}
@Override
public MqttSubAckPayload payload() {
return (MqttSubAckPayload) super.payload();

13
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubscribeMessage.java
View File

@ -24,16 +24,27 @@ public final class MqttSubscribeMessage extends MqttMessage {
public MqttSubscribeMessage(
MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttMessageIdAndPropertiesVariableHeader variableHeader,
MqttSubscribePayload payload) {
super(mqttFixedHeader, variableHeader, payload);
}
public MqttSubscribeMessage(
MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttSubscribePayload payload) {
this(mqttFixedHeader, variableHeader.withEmptyProperties(), payload);
}
@Override
public MqttMessageIdVariableHeader variableHeader() {
return (MqttMessageIdVariableHeader) super.variableHeader();
}
public MqttMessageIdAndPropertiesVariableHeader idAndPropertiesVariableHeader() {
return (MqttMessageIdAndPropertiesVariableHeader) super.variableHeader();
}
@Override
public MqttSubscribePayload payload() {
return (MqttSubscribePayload) super.payload();

124
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttSubscriptionOption.java Normal file
View File

@ -0,0 +1,124 @@
/*
* Copyright 2020 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:
*
* http://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 io.netty.handler.codec.mqtt;
/**
* Model the SubscriptionOption used in Subscribe MQTT v5 packet
*/
public final class MqttSubscriptionOption {
enum RetainedHandlingPolicy {
SEND_AT_SUBSCRIBE(0),
SEND_AT_SUBSCRIBE_IF_NOT_YET_EXISTS(1),
DONT_SEND_AT_SUBSCRIBE(2);
private final int value;
RetainedHandlingPolicy(int value) {
this.value = value;
}
public int value() {
return value;
}
public static RetainedHandlingPolicy valueOf(int value) {
for (RetainedHandlingPolicy q: values()) {
if (q.value == value) {
return q;
}
}
throw new IllegalArgumentException("invalid RetainedHandlingPolicy: " + value);
}
}
private final MqttQoS qos;
private final boolean noLocal;
private final boolean retainAsPublished;
private final RetainedHandlingPolicy retainHandling;
public static MqttSubscriptionOption onlyFromQos(MqttQoS qos) {
return new MqttSubscriptionOption(qos, false, false, RetainedHandlingPolicy.SEND_AT_SUBSCRIBE);
}
public MqttSubscriptionOption(MqttQoS qos,
boolean noLocal,
boolean retainAsPublished,
RetainedHandlingPolicy retainHandling) {
this.qos = qos;
this.noLocal = noLocal;
this.retainAsPublished = retainAsPublished;
this.retainHandling = retainHandling;
}
public MqttQoS qos() {
return qos;
}
public boolean isNoLocal() {
return noLocal;
}
public boolean isRetainAsPublished() {
return retainAsPublished;
}
public RetainedHandlingPolicy retainHandling() {
return retainHandling;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
MqttSubscriptionOption that = (MqttSubscriptionOption) o;
if (noLocal != that.noLocal) {
return false;
}
if (retainAsPublished != that.retainAsPublished) {
return false;
}
if (qos != that.qos) {
return false;
}
return retainHandling == that.retainHandling;
}
@Override
public int hashCode() {
int result = qos.hashCode();
result = 31 * result + (noLocal ? 1 : 0);
result = 31 * result + (retainAsPublished ? 1 : 0);
result = 31 * result + retainHandling.hashCode();
return result;
}
@Override
public String toString() {
return "SubscriptionOption[" +
"qos=" + qos +
", noLocal=" + noLocal +
", retainAsPublished=" + retainAsPublished +
", retainHandling=" + retainHandling +
']';
}
}

17
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttTopicSubscription.java
View File

@ -25,11 +25,16 @@ import io.netty.util.internal.StringUtil;
public final class MqttTopicSubscription {
private final String topicFilter;
private final MqttQoS qualityOfService;
private final MqttSubscriptionOption option;
public MqttTopicSubscription(String topicFilter, MqttQoS qualityOfService) {
this.topicFilter = topicFilter;
this.qualityOfService = qualityOfService;
this.option = MqttSubscriptionOption.onlyFromQos(qualityOfService);
}
public MqttTopicSubscription(String topicFilter, MqttSubscriptionOption option) {
this.topicFilter = topicFilter;
this.option = option;
}
public String topicName() {
@ -37,7 +42,11 @@ public final class MqttTopicSubscription {
}
public MqttQoS qualityOfService() {
return qualityOfService;
return option.qos();
}
public MqttSubscriptionOption option() {
return option;
}
@Override
@ -45,7 +54,7 @@ public final class MqttTopicSubscription {
return new StringBuilder(StringUtil.simpleClassName(this))
.append('[')
.append("topicFilter=").append(topicFilter)
.append(", qualityOfService=").append(qualityOfService)
.append(", option=").append(this.option)
.append(']')
.toString();
}

33
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttUnsubAckMessage.java
View File

@ -21,12 +21,41 @@ package io.netty.handler.codec.mqtt;
*/
public final class MqttUnsubAckMessage extends MqttMessage {
public MqttUnsubAckMessage(MqttFixedHeader mqttFixedHeader, MqttMessageIdVariableHeader variableHeader) {
super(mqttFixedHeader, variableHeader, null);
public MqttUnsubAckMessage(MqttFixedHeader mqttFixedHeader,
MqttMessageIdAndPropertiesVariableHeader variableHeader,
MqttUnsubAckPayload payload) {
super(mqttFixedHeader, variableHeader, payload);
}
public MqttUnsubAckMessage(MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttUnsubAckPayload payload) {
this(mqttFixedHeader, fallbackVariableHeader(variableHeader), payload);
}
public MqttUnsubAckMessage(MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader) {
this(mqttFixedHeader, variableHeader, null);
}
private static MqttMessageIdAndPropertiesVariableHeader fallbackVariableHeader(
MqttMessageIdVariableHeader variableHeader) {
if (variableHeader instanceof MqttMessageIdAndPropertiesVariableHeader) {
return (MqttMessageIdAndPropertiesVariableHeader) variableHeader;
}
return new MqttMessageIdAndPropertiesVariableHeader(variableHeader.messageId(), MqttProperties.NO_PROPERTIES);
}
@Override
public MqttMessageIdVariableHeader variableHeader() {
return (MqttMessageIdVariableHeader) super.variableHeader();
}
public MqttMessageIdAndPropertiesVariableHeader idAndPropertiesVariableHeader() {
return (MqttMessageIdAndPropertiesVariableHeader) super.variableHeader();
}
@Override
public MqttUnsubAckPayload payload() {
return (MqttUnsubAckPayload) super.payload();
}
}

65
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttUnsubAckPayload.java Normal file
View File

@ -0,0 +1,65 @@
/*
* Copyright 2020 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:
*
* http://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 io.netty.handler.codec.mqtt;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.StringUtil;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Payload for MQTT unsuback message as in V5.
*/
public final class MqttUnsubAckPayload {
private final List<Short> unsubscribeReasonCodes;
public MqttUnsubAckPayload(short... unsubscribeReasonCodes) {
ObjectUtil.checkNotNull(unsubscribeReasonCodes, "unsubscribeReasonCodes");
List<Short> list = new ArrayList<Short>(unsubscribeReasonCodes.length);
for (Short v: unsubscribeReasonCodes) {
list.add(v);
}
this.unsubscribeReasonCodes = Collections.unmodifiableList(list);
}
public MqttUnsubAckPayload(Iterable<Short> unsubscribeReasonCodes) {
ObjectUtil.checkNotNull(unsubscribeReasonCodes, "unsubscribeReasonCodes");
List<Short> list = new ArrayList<Short>();
for (Short v: unsubscribeReasonCodes) {
ObjectUtil.checkNotNull(v, "unsubscribeReasonCode");
list.add(v);
}
this.unsubscribeReasonCodes = Collections.unmodifiableList(list);
}
public List<Short> unsubscribeReasonCodes() {
return unsubscribeReasonCodes;
}
@Override
public String toString() {
return new StringBuilder(StringUtil.simpleClassName(this))
.append('[')
.append("unsubscribeReasonCodes=").append(unsubscribeReasonCodes)
.append(']')
.toString();
}
}

13
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttUnsubscribeMessage.java
View File

@ -24,16 +24,27 @@ public final class MqttUnsubscribeMessage extends MqttMessage {
public MqttUnsubscribeMessage(
MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttMessageIdAndPropertiesVariableHeader variableHeader,
MqttUnsubscribePayload payload) {
super(mqttFixedHeader, variableHeader, payload);
}
public MqttUnsubscribeMessage(
MqttFixedHeader mqttFixedHeader,
MqttMessageIdVariableHeader variableHeader,
MqttUnsubscribePayload payload) {
this(mqttFixedHeader, variableHeader.withEmptyProperties(), payload);
}
@Override
public MqttMessageIdVariableHeader variableHeader() {
return (MqttMessageIdVariableHeader) super.variableHeader();
}
public MqttMessageIdAndPropertiesVariableHeader idAndPropertiesVariableHeader() {
return (MqttMessageIdAndPropertiesVariableHeader) super.variableHeader();
}
@Override
public MqttUnsubscribePayload payload() {
return (MqttUnsubscribePayload) super.payload();

7
codec-mqtt/src/main/java/io/netty/handler/codec/mqtt/MqttVersion.java
View File

@ -25,7 +25,8 @@ import io.netty.util.CharsetUtil;
*/
public enum MqttVersion {
MQTT_3_1("MQIsdp", (byte) 3),
MQTT_3_1_1("MQTT", (byte) 4);
MQTT_3_1_1("MQTT", (byte) 4),
MQTT_5("MQTT", (byte) 5);
private final String name;
private final byte level;
@ -49,8 +50,8 @@ public enum MqttVersion {
public static MqttVersion fromProtocolNameAndLevel(String protocolName, byte protocolLevel) {
for (MqttVersion mv : values()) {
if (mv.name.equals(protocolName)) {
if (mv.level == protocolLevel) {
if (mv.level == protocolLevel) {
if (mv.name.equals(protocolName)) {
return mv;
} else {
throw new MqttUnacceptableProtocolVersionException(protocolName + " and " +

508
codec-mqtt/src/test/java/io/netty/handler/codec/mqtt/MqttCodecTest.java
View File

@ -18,10 +18,13 @@ package io.netty.handler.codec.mqtt;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.UnpooledByteBufAllocator;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.DecoderException;
import io.netty.handler.codec.EncoderException;
import io.netty.util.Attribute;
import io.netty.util.CharsetUtil;
import org.junit.Before;
import org.junit.Test;
@ -33,6 +36,9 @@ import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import static io.netty.handler.codec.mqtt.MqttProperties.MqttPropertyType.*;
import static io.netty.handler.codec.mqtt.MqttQoS.AT_LEAST_ONCE;
import static io.netty.handler.codec.mqtt.MqttSubscriptionOption.RetainedHandlingPolicy.SEND_AT_SUBSCRIBE_IF_NOT_YET_EXISTS;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
@ -51,12 +57,17 @@ public class MqttCodecTest {
private static final ByteBufAllocator ALLOCATOR = new UnpooledByteBufAllocator(false);
private static final int DEFAULT_MAX_BYTES_IN_MESSAGE = 8092;
@Mock
private final ChannelHandlerContext ctx = mock(ChannelHandlerContext.class);
@Mock
private final Channel channel = mock(Channel.class);
@Mock
private final Attribute<MqttVersion> versionAttrMock = mock(Attribute.class);
private final MqttDecoder mqttDecoder = new MqttDecoder();
/**
@ -68,12 +79,14 @@ public class MqttCodecTest {
public void setup() {
MockitoAnnotations.initMocks(this);
when(ctx.channel()).thenReturn(channel);
when(ctx.alloc()).thenReturn(ALLOCATOR);
when(channel.attr(MqttCodecUtil.MQTT_VERSION_KEY)).thenReturn(versionAttrMock);
}
@Test
public void testConnectMessageForMqtt31() throws Exception {
final MqttConnectMessage message = createConnectMessage(MqttVersion.MQTT_3_1);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttConnectMessage> captor = ArgumentCaptor.forClass(MqttConnectMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -89,7 +102,7 @@ public class MqttCodecTest {
@Test
public void testConnectMessageForMqtt311() throws Exception {
final MqttConnectMessage message = createConnectMessage(MqttVersion.MQTT_3_1_1);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttConnectMessage> captor = ArgumentCaptor.forClass(MqttConnectMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -105,7 +118,7 @@ public class MqttCodecTest {
@Test
public void testConnectMessageWithNonZeroReservedFlagForMqtt311() throws Exception {
final MqttConnectMessage message = createConnectMessage(MqttVersion.MQTT_3_1_1);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
// Set the reserved flag in the CONNECT Packet to 1
byteBuf.setByte(9, byteBuf.getByte(9) | 0x1);
@ -126,19 +139,24 @@ public class MqttCodecTest {
@Test
public void testConnectMessageNoPassword() throws Exception {
final MqttConnectMessage message = createConnectMessage(MqttVersion.MQTT_3_1_1, null, PASSWORD);
final MqttConnectMessage message = createConnectMessage(
MqttVersion.MQTT_3_1_1,
null,
PASSWORD,
MqttProperties.NO_PROPERTIES,
MqttProperties.NO_PROPERTIES);
try {
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
} catch (Exception cause) {
assertTrue(cause instanceof DecoderException);
assertTrue(cause instanceof EncoderException);
}
}
@Test
public void testConnAckMessage() throws Exception {
final MqttConnAckMessage message = createConnAckMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttConnAckMessage> captor = ArgumentCaptor.forClass(MqttConnAckMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -152,7 +170,7 @@ public class MqttCodecTest {
@Test
public void testPublishMessage() throws Exception {
final MqttPublishMessage message = createPublishMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttPublishMessage> captor = ArgumentCaptor.forClass(MqttPublishMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -187,7 +205,7 @@ public class MqttCodecTest {
@Test
public void testSubscribeMessage() throws Exception {
final MqttSubscribeMessage message = createSubscribeMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttSubscribeMessage> captor = ArgumentCaptor.forClass(MqttSubscribeMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -202,7 +220,7 @@ public class MqttCodecTest {
@Test
public void testSubAckMessage() throws Exception {
final MqttSubAckMessage message = createSubAckMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttSubAckMessage> captor = ArgumentCaptor.forClass(MqttSubAckMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -223,7 +241,7 @@ public class MqttCodecTest {
MqttSubAckMessage message =
new MqttSubAckMessage(mqttFixedHeader, mqttMessageIdVariableHeader, mqttSubAckPayload);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttSubAckMessage> captor = ArgumentCaptor.forClass(MqttSubAckMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -240,7 +258,7 @@ public class MqttCodecTest {
@Test
public void testUnSubscribeMessage() throws Exception {
final MqttUnsubscribeMessage message = createUnsubscribeMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttUnsubscribeMessage> captor = ArgumentCaptor.forClass(MqttUnsubscribeMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -272,11 +290,12 @@ public class MqttCodecTest {
testMessageWithOnlyFixedHeader(MqttMessage.DISCONNECT);
}
//All 0..F message type codes are valid in MQTT 5
@Test
public void testUnknownMessageType() throws Exception {
final MqttMessage message = createMessageWithFixedHeader(MqttMessageType.PINGREQ);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
// setting an invalid message type (15, reserved and forbidden by MQTT 3.1.1 spec)
byteBuf.setByte(0, 0xF0);
@ -288,8 +307,8 @@ public class MqttCodecTest {
final MqttMessage decodedMessage = captor.getValue();
assertTrue(decodedMessage.decoderResult().isFailure());
Throwable cause = decodedMessage.decoderResult().cause();
assertTrue(cause instanceof IllegalArgumentException);
assertEquals("unknown message type: 15", cause.getMessage());
assertTrue(cause instanceof DecoderException);
assertEquals("AUTH message requires at least MQTT 5", cause.getMessage());
} finally {
byteBuf.release();
}
@ -298,7 +317,7 @@ public class MqttCodecTest {
@Test
public void testConnectMessageForMqtt31TooLarge() throws Exception {
final MqttConnectMessage message = createConnectMessage(MqttVersion.MQTT_3_1);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -319,7 +338,7 @@ public class MqttCodecTest {
@Test
public void testConnectMessageForMqtt311TooLarge() throws Exception {
final MqttConnectMessage message = createConnectMessage(MqttVersion.MQTT_3_1_1);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -340,7 +359,7 @@ public class MqttCodecTest {
@Test
public void testConnAckMessageTooLarge() throws Exception {
final MqttConnAckMessage message = createConnAckMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -358,7 +377,7 @@ public class MqttCodecTest {
@Test
public void testPublishMessageTooLarge() throws Exception {
final MqttPublishMessage message = createPublishMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -379,7 +398,7 @@ public class MqttCodecTest {
@Test
public void testSubscribeMessageTooLarge() throws Exception {
final MqttSubscribeMessage message = createSubscribeMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -399,7 +418,7 @@ public class MqttCodecTest {
@Test
public void testSubAckMessageTooLarge() throws Exception {
final MqttSubAckMessage message = createSubAckMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -419,7 +438,7 @@ public class MqttCodecTest {
@Test
public void testUnSubscribeMessageTooLarge() throws Exception {
final MqttUnsubscribeMessage message = createUnsubscribeMessage();
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
try {
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
@ -436,8 +455,279 @@ public class MqttCodecTest {
}
}
@Test
public void testConnectMessageForMqtt5() throws Exception {
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(SESSION_EXPIRY_INTERVAL.value(), 10));
props.add(new MqttProperties.StringProperty(AUTHENTICATION_METHOD.value(), "Plain"));
MqttProperties willProps = new MqttProperties();
willProps.add(new MqttProperties.IntegerProperty(WILL_DELAY_INTERVAL.value(), 100));
final MqttConnectMessage message =
createConnectMessage(MqttVersion.MQTT_5, USER_NAME, PASSWORD, props, willProps);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttConnectMessage> captor = ArgumentCaptor.forClass(MqttConnectMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttConnectMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validateConnectVariableHeader(message.variableHeader(), decodedMessage.variableHeader());
validateConnectPayload(message.payload(), decodedMessage.payload());
}
@Test
public void testConnAckMessageForMqtt5() throws Exception {
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(SESSION_EXPIRY_INTERVAL.value(), 10));
props.add(new MqttProperties.IntegerProperty(MAXIMUM_QOS.value(), 1));
props.add(new MqttProperties.IntegerProperty(MAXIMUM_PACKET_SIZE.value(), 1000));
final MqttConnAckMessage message = createConnAckMessage(props);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttConnAckMessage> captor = ArgumentCaptor.forClass(MqttConnAckMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttConnAckMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validateConnAckVariableHeader(message.variableHeader(), decodedMessage.variableHeader());
}
@Test
public void testPublishMessageForMqtt5() throws Exception {
when(versionAttrMock.get()).thenReturn(MqttVersion.MQTT_5);
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(PAYLOAD_FORMAT_INDICATOR.value(), 6));
props.add(new MqttProperties.UserProperty("isSecret", "true"));
props.add(new MqttProperties.UserProperty("isUrgent", "false"));
assertEquals("User properties count mismatch",
((MqttProperties.UserProperties) props.getProperty(USER_PROPERTY.value())).value.size(), 2);
final MqttPublishMessage message = createPublishMessage(props);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttPublishMessage> captor = ArgumentCaptor.forClass(MqttPublishMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttPublishMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validatePublishVariableHeader(message.variableHeader(), decodedMessage.variableHeader());
validatePublishPayload(message.payload(), decodedMessage.payload());
}
@Test
public void testPubAckMessageForMqtt5() throws Exception {
when(versionAttrMock.get()).thenReturn(MqttVersion.MQTT_5);
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(PAYLOAD_FORMAT_INDICATOR.value(), 6));
//0x87 - Not Authorized
final MqttMessage message = createPubAckMessage((byte) 0x87, props);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validatePubReplyVariableHeader((MqttPubReplyMessageVariableHeader) message.variableHeader(),
(MqttPubReplyMessageVariableHeader) decodedMessage.variableHeader());
}
@Test
public void testPubAckMessageSkipCodeForMqtt5() throws Exception {
//Code 0 (Success) and no properties - skip encoding code and properties
final MqttMessage message = createPubAckMessage((byte) 0, MqttProperties.NO_PROPERTIES);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validatePubReplyVariableHeader((MqttPubReplyMessageVariableHeader) message.variableHeader(),
(MqttPubReplyMessageVariableHeader) decodedMessage.variableHeader());
}
@Test
public void testSubAckMessageForMqtt5() throws Exception {
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(PAYLOAD_FORMAT_INDICATOR.value(), 6));
final MqttSubAckMessage message = createSubAckMessage(props);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttSubAckMessage> captor = ArgumentCaptor.forClass(MqttSubAckMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttSubAckMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validatePacketIdAndPropertiesVariableHeader(
(MqttMessageIdAndPropertiesVariableHeader) message.variableHeader(),
(MqttMessageIdAndPropertiesVariableHeader) decodedMessage.variableHeader());
}
@Test
public void testSubscribeMessageForMqtt5() throws Exception {
when(versionAttrMock.get()).thenReturn(MqttVersion.MQTT_5);
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(PAYLOAD_FORMAT_INDICATOR.value(), 6));
final MqttSubscribeMessage message = MqttMessageBuilders.subscribe()
.messageId((short) 1)
.properties(props)
.addSubscription("/topic", new MqttSubscriptionOption(AT_LEAST_ONCE,
true,
true,
SEND_AT_SUBSCRIBE_IF_NOT_YET_EXISTS))
.build();
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttSubscribeMessage> captor = ArgumentCaptor.forClass(MqttSubscribeMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttSubscribeMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
final MqttMessageIdAndPropertiesVariableHeader expectedHeader =
(MqttMessageIdAndPropertiesVariableHeader) message.variableHeader();
final MqttMessageIdAndPropertiesVariableHeader actualHeader =
(MqttMessageIdAndPropertiesVariableHeader) decodedMessage.variableHeader();
validatePacketIdAndPropertiesVariableHeader(expectedHeader, actualHeader);
validateSubscribePayload(message.payload(), decodedMessage.payload());
}
@Test
public void testUnsubAckMessageForMqtt5() throws Exception {
when(versionAttrMock.get()).thenReturn(MqttVersion.MQTT_5);
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(PAYLOAD_FORMAT_INDICATOR.value(), 6));
final MqttUnsubAckMessage message = MqttMessageBuilders.unsubAck()
.packetId((short) 1)
.properties(props)
.addReasonCode((short) 0x83)
.build();
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttUnsubAckMessage> captor = ArgumentCaptor.forClass(MqttUnsubAckMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttUnsubAckMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validatePacketIdAndPropertiesVariableHeader(
(MqttMessageIdAndPropertiesVariableHeader) message.variableHeader(),
(MqttMessageIdAndPropertiesVariableHeader) decodedMessage.variableHeader());
assertEquals("Reason code list doesn't match", message.payload().unsubscribeReasonCodes(),
decodedMessage.payload().unsubscribeReasonCodes());
}
@Test
public void testDisconnectMessageForMqtt5() throws Exception {
when(versionAttrMock.get()).thenReturn(MqttVersion.MQTT_5);
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.IntegerProperty(SESSION_EXPIRY_INTERVAL.value(), 6));
final MqttMessage message = MqttMessageBuilders.disconnect()
.reasonCode((byte) 0x96) // Message rate too high
.properties(props)
.build();
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validateReasonCodeAndPropertiesVariableHeader(
(MqttReasonCodeAndPropertiesVariableHeader) message.variableHeader(),
(MqttReasonCodeAndPropertiesVariableHeader) decodedMessage.variableHeader());
}
@Test
public void testDisconnectMessageSkipCodeForMqtt5() throws Exception {
//code 0 and no properties - skip encoding code and properties
final MqttMessage message = MqttMessageBuilders.disconnect()
.reasonCode((byte) 0) // ok
.properties(MqttProperties.NO_PROPERTIES)
.build();
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validateReasonCodeAndPropertiesVariableHeader(
(MqttReasonCodeAndPropertiesVariableHeader) message.variableHeader(),
(MqttReasonCodeAndPropertiesVariableHeader) decodedMessage.variableHeader());
}
@Test
public void testAuthMessageForMqtt5() throws Exception {
when(versionAttrMock.get()).thenReturn(MqttVersion.MQTT_5);
MqttProperties props = new MqttProperties();
props.add(new MqttProperties.BinaryProperty(AUTHENTICATION_DATA.value(), "secret".getBytes(CharsetUtil.UTF_8)));
final MqttMessage message = MqttMessageBuilders.auth()
.reasonCode((byte) 0x18) // Continue authentication
.properties(props)
.build();
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
verify(ctx).fireChannelRead(captor.capture());
final MqttMessage decodedMessage = captor.getValue();
validateFixedHeaders(message.fixedHeader(), decodedMessage.fixedHeader());
validateReasonCodeAndPropertiesVariableHeader(
(MqttReasonCodeAndPropertiesVariableHeader) message.variableHeader(),
(MqttReasonCodeAndPropertiesVariableHeader) decodedMessage.variableHeader());
}
@Test
public void testMqttVersionDetection() throws Exception {
clearInvocations(versionAttrMock);
//Encode CONNECT message so that encoder would initialize its version
final MqttConnectMessage connectMessage = createConnectMessage(MqttVersion.MQTT_5);
ByteBuf connectByteBuf = MqttEncoder.doEncode(ctx, connectMessage);
verify(versionAttrMock, times(1)).set(MqttVersion.MQTT_5);
clearInvocations(versionAttrMock);
ArgumentCaptor<MqttConnectMessage> captor = ArgumentCaptor.forClass(MqttConnectMessage.class);
mqttDecoder.decode(ctx, connectByteBuf);
verify(ctx).fireChannelRead(captor.capture());
verify(versionAttrMock, times(1)).set(MqttVersion.MQTT_5);
final MqttConnectMessage decodedConnectMessage = captor.getValue();
validateFixedHeaders(connectMessage.fixedHeader(), decodedConnectMessage.fixedHeader());
validateConnectVariableHeader(connectMessage.variableHeader(), decodedConnectMessage.variableHeader());
validateConnectPayload(connectMessage.payload(), decodedConnectMessage.payload());
verifyNoMoreInteractions(versionAttrMock);
}
private void testMessageWithOnlyFixedHeader(MqttMessage message) throws Exception {
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -451,7 +741,7 @@ public class MqttCodecTest {
throws Exception {
MqttMessage message = createMessageWithFixedHeaderAndMessageIdVariableHeader(messageType);
ByteBuf byteBuf = MqttEncoder.doEncode(ALLOCATOR, message);
ByteBuf byteBuf = MqttEncoder.doEncode(ctx, message);
ArgumentCaptor<MqttMessage> captor = ArgumentCaptor.forClass(MqttMessage.class);
mqttDecoder.decode(ctx, byteBuf);
@ -484,36 +774,57 @@ public class MqttCodecTest {
}
private static MqttConnectMessage createConnectMessage(MqttVersion mqttVersion) {
return createConnectMessage(mqttVersion, USER_NAME, PASSWORD);
return createConnectMessage(mqttVersion,
USER_NAME,
PASSWORD,
MqttProperties.NO_PROPERTIES,
MqttProperties.NO_PROPERTIES);
}
private static MqttConnectMessage createConnectMessage(MqttVersion mqttVersion, String username, String password) {
private static MqttConnectMessage createConnectMessage(MqttVersion mqttVersion,
String username,
String password,
MqttProperties properties,
MqttProperties willProperties) {
return MqttMessageBuilders.connect()
.clientId(CLIENT_ID)
.protocolVersion(mqttVersion)
.username(username)
.password(password)
.password(password.getBytes(CharsetUtil.UTF_8))
.properties(properties)
.willRetain(true)
.willQoS(MqttQoS.AT_LEAST_ONCE)
.willFlag(true)
.willTopic(WILL_TOPIC)
.willMessage(WILL_MESSAGE)
.willMessage(WILL_MESSAGE.getBytes(CharsetUtil.UTF_8))
.willProperties(willProperties)
.cleanSession(true)
.keepAlive(KEEP_ALIVE_SECONDS)
.build();
}
private static MqttConnAckMessage createConnAckMessage() {
return createConnAckMessage(MqttProperties.NO_PROPERTIES);
}
private static MqttConnAckMessage createConnAckMessage(MqttProperties properties) {
return MqttMessageBuilders.connAck()
.returnCode(MqttConnectReturnCode.CONNECTION_ACCEPTED)
.properties(properties)
.sessionPresent(true)
.build();
}
private static MqttPublishMessage createPublishMessage() {
return createPublishMessage(MqttProperties.NO_PROPERTIES);
}
private static MqttPublishMessage createPublishMessage(MqttProperties properties) {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.PUBLISH, false, MqttQoS.AT_LEAST_ONCE, true, 0);
MqttPublishVariableHeader mqttPublishVariableHeader = new MqttPublishVariableHeader("/abc", 1234);
MqttPublishVariableHeader mqttPublishVariableHeader = new MqttPublishVariableHeader("/abc",
1234,
properties);
ByteBuf payload = ALLOCATOR.buffer();
payload.writeBytes("whatever".getBytes(CharsetUtil.UTF_8));
return new MqttPublishMessage(mqttFixedHeader, mqttPublishVariableHeader, payload);
@ -534,6 +845,10 @@ public class MqttCodecTest {
}
private static MqttSubAckMessage createSubAckMessage() {
return createSubAckMessage(MqttProperties.NO_PROPERTIES);
}
private static MqttSubAckMessage createSubAckMessage(MqttProperties properties) {
MqttFixedHeader mqttFixedHeader =
new MqttFixedHeader(MqttMessageType.SUBACK, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttMessageIdVariableHeader mqttMessageIdVariableHeader = MqttMessageIdVariableHeader.from(12345);
@ -555,6 +870,14 @@ public class MqttCodecTest {
return new MqttUnsubscribeMessage(mqttFixedHeader, mqttMessageIdVariableHeader, mqttUnsubscribePayload);
}
private MqttMessage createPubAckMessage(byte reasonCode, MqttProperties properties) {
return MqttMessageBuilders.pubAck()
.packetId((short) 1)
.reasonCode(reasonCode)
.properties(properties)
.build();
}
// Helper methods to compare expected and actual
// MQTT messages
@ -572,6 +895,8 @@ public class MqttCodecTest {
expected.keepAliveTimeSeconds(),
actual.keepAliveTimeSeconds());
assertEquals("MqttConnectVariableHeader Version mismatch ", expected.version(), actual.version());
assertEquals("MqttConnectVariableHeader Version mismatch ", expected.version(), actual.version());
validateProperties(expected.properties(), actual.properties());
assertEquals("MqttConnectVariableHeader WillQos mismatch ", expected.willQos(), actual.willQos());
assertEquals("MqttConnectVariableHeader HasUserName mismatch ", expected.hasUserName(), actual.hasUserName());
@ -602,6 +927,7 @@ public class MqttCodecTest {
"MqttConnectPayload WillMessage bytes mismatch ",
Arrays.equals(expected.willMessageInBytes(), actual.willMessageInBytes()));
assertEquals("MqttConnectPayload WillTopic mismatch ", expected.willTopic(), actual.willTopic());
validateProperties(expected.willProperties(), actual.willProperties());
}
private static void validateConnAckVariableHeader(
@ -617,7 +943,8 @@ public class MqttCodecTest {
MqttPublishVariableHeader expected,
MqttPublishVariableHeader actual) {
assertEquals("MqttPublishVariableHeader TopicName mismatch ", expected.topicName(), actual.topicName());
assertEquals("MqttPublishVariableHeader MessageId mismatch ", expected.messageId(), actual.messageId());
assertEquals("MqttPublishVariableHeader MessageId mismatch ", expected.packetId(), actual.packetId());
validateProperties(expected.properties(), actual.properties());
}
private static void validatePublishPayload(ByteBuf expected, ByteBuf actual) {
@ -651,6 +978,10 @@ public class MqttCodecTest {
"MqttTopicSubscription Qos mismatch ",
expected.qualityOfService(),
actual.qualityOfService());
assertEquals(
"MqttTopicSubscription options mismatch ",
expected.option(),
actual.option());
}
private static void validateSubAckPayload(MqttSubAckPayload expected, MqttSubAckPayload actual) {
@ -676,4 +1007,121 @@ public class MqttCodecTest {
assertTrue("MqttMessage DecoderResult cause reason expect to contain 'too large message' ",
cause.getMessage().contains("too large message:"));
}
private static void validatePubReplyVariableHeader(
MqttPubReplyMessageVariableHeader expected,
MqttPubReplyMessageVariableHeader actual) {
assertEquals("MqttPubReplyMessageVariableHeader MessageId mismatch ",
expected.messageId(), actual.messageId());
assertEquals("MqttPubReplyMessageVariableHeader reasonCode mismatch ",
expected.reasonCode(), actual.reasonCode());
final MqttProperties expectedProps = expected.properties();
final MqttProperties actualProps = actual.properties();
validateProperties(expectedProps, actualProps);
}
private void validatePacketIdAndPropertiesVariableHeader(MqttMessageIdAndPropertiesVariableHeader expected,
MqttMessageIdAndPropertiesVariableHeader actual) {
assertEquals("MqttMessageIdAndPropertiesVariableHeader MessageId mismatch ",
expected.messageId(), actual.messageId());
final MqttProperties expectedProps = expected.properties();
final MqttProperties actualProps = actual.properties();
validateProperties(expectedProps, actualProps);
}
private void validateReasonCodeAndPropertiesVariableHeader(MqttReasonCodeAndPropertiesVariableHeader expected,
MqttReasonCodeAndPropertiesVariableHeader actual) {
assertEquals("MqttReasonCodeAndPropertiesVariableHeader reason mismatch ",
expected.reasonCode(), actual.reasonCode());
final MqttProperties expectedProps = expected.properties();
final MqttProperties actualProps = actual.properties();
validateProperties(expectedProps, actualProps);
}
private static void validateProperties(MqttProperties expected, MqttProperties actual) {
for (MqttProperties.MqttProperty expectedProperty : expected.listAll()) {
MqttProperties.MqttProperty actualProperty = actual.getProperty(expectedProperty.propertyId);
switch (MqttProperties.MqttPropertyType.valueOf(expectedProperty.propertyId)) {
// one byte value integer property
case PAYLOAD_FORMAT_INDICATOR:
case REQUEST_PROBLEM_INFORMATION:
case REQUEST_RESPONSE_INFORMATION:
case MAXIMUM_QOS:
case RETAIN_AVAILABLE:
case WILDCARD_SUBSCRIPTION_AVAILABLE:
case SUBSCRIPTION_IDENTIFIER_AVAILABLE:
case SHARED_SUBSCRIPTION_AVAILABLE: {
final Integer expectedValue = ((MqttProperties.IntegerProperty) expectedProperty).value;
final Integer actualValue = ((MqttProperties.IntegerProperty) actualProperty).value;
assertEquals("one byte property doesn't match", expectedValue, actualValue);
break;
}
// two byte value integer property
case SERVER_KEEP_ALIVE:
case RECEIVE_MAXIMUM:
case TOPIC_ALIAS_MAXIMUM:
case TOPIC_ALIAS: {
final Integer expectedValue = ((MqttProperties.IntegerProperty) expectedProperty).value;
final Integer actualValue = ((MqttProperties.IntegerProperty) actualProperty).value;
assertEquals("two byte property doesn't match", expectedValue, actualValue);
break;
}
// four byte value integer property
case PUBLICATION_EXPIRY_INTERVAL:
case SESSION_EXPIRY_INTERVAL:
case WILL_DELAY_INTERVAL:
case MAXIMUM_PACKET_SIZE: {
final Integer expectedValue = ((MqttProperties.IntegerProperty) expectedProperty).value;
final Integer actualValue = ((MqttProperties.IntegerProperty) actualProperty).value;
assertEquals("four byte property doesn't match", expectedValue, actualValue);
break;
}
// four byte value integer property
case SUBSCRIPTION_IDENTIFIER: {
final Integer expectedValue = ((MqttProperties.IntegerProperty) expectedProperty).value;
final Integer actualValue = ((MqttProperties.IntegerProperty) actualProperty).value;
assertEquals("variable byte integer property doesn't match", expectedValue, actualValue);
break;
}
// UTF-8 string value integer property
case CONTENT_TYPE:
case RESPONSE_TOPIC:
case ASSIGNED_CLIENT_IDENTIFIER:
case AUTHENTICATION_METHOD:
case RESPONSE_INFORMATION:
case SERVER_REFERENCE:
case REASON_STRING: {
final String expectedValue = ((MqttProperties.StringProperty) expectedProperty).value;
final String actualValue = ((MqttProperties.StringProperty) actualProperty).value;
assertEquals("String property doesn't match", expectedValue, actualValue);
break;
}
// User property
case USER_PROPERTY: {
final List<MqttProperties.StringPair> expectedPairs =
((MqttProperties.UserProperties) expectedProperty).value;
final List<MqttProperties.StringPair> actualPairs =
((MqttProperties.UserProperties) actualProperty).value;
assertEquals("User properties count doesn't match", expectedPairs, actualPairs);
for (int i = 0; i < expectedPairs.size(); i++) {
assertEquals("User property mismatch", expectedPairs.get(i), actualPairs.get(i));
}
break;
}
// byte[] property
case CORRELATION_DATA:
case AUTHENTICATION_DATA: {
final byte[] expectedValue = ((MqttProperties.BinaryProperty) expectedProperty).value;
final byte[] actualValue = ((MqttProperties.BinaryProperty) actualProperty).value;
final String expectedHexDump = ByteBufUtil.hexDump(expectedValue);
final String actualHexDump = ByteBufUtil.hexDump(actualValue);
assertEquals("byte[] property doesn't match", expectedHexDump, actualHexDump);
break;
}
default:
fail("Property Id not recognized " + Integer.toHexString(expectedProperty.propertyId));
}
}
}
}

16
codec-mqtt/src/test/java/io/netty/handler/codec/mqtt/MqttConnectPayloadTest.java
View File

@ -32,8 +32,12 @@ public class MqttConnectPayloadTest {
byte[] willMessage = null;
String userName = "userName";
byte[] password = "password".getBytes(CharsetUtil.UTF_8);
MqttConnectPayload mqttConnectPayload =
new MqttConnectPayload(clientIdentifier, willTopic, willMessage, userName, password);
MqttConnectPayload mqttConnectPayload = new MqttConnectPayload(clientIdentifier,
MqttProperties.NO_PROPERTIES,
willTopic,
willMessage,
userName,
password);
assertNull(mqttConnectPayload.willMessageInBytes());
assertNull(mqttConnectPayload.willMessage());
@ -46,8 +50,12 @@ public class MqttConnectPayloadTest {
byte[] willMessage = "willMessage".getBytes(CharsetUtil.UTF_8);
String userName = "userName";
byte[] password = null;
MqttConnectPayload mqttConnectPayload =
new MqttConnectPayload(clientIdentifier, willTopic, willMessage, userName, password);
MqttConnectPayload mqttConnectPayload = new MqttConnectPayload(clientIdentifier,
MqttProperties.NO_PROPERTIES,
willTopic,
willMessage,
userName,
password);
assertNull(mqttConnectPayload.passwordInBytes());
assertNull(mqttConnectPayload.password());

10
example/src/main/java/io/netty/example/mqtt/heartBeat/MqttHeartBeatClientHandler.java
View File

@ -24,6 +24,7 @@ import io.netty.handler.codec.mqtt.MqttFixedHeader;
import io.netty.handler.codec.mqtt.MqttMessage;
import io.netty.handler.codec.mqtt.MqttMessageType;
import io.netty.handler.codec.mqtt.MqttQoS;
import io.netty.handler.codec.mqtt.MqttProperties;
import io.netty.handler.timeout.IdleStateEvent;
import io.netty.util.ReferenceCountUtil;
@ -54,8 +55,13 @@ public class MqttHeartBeatClientHandler implements ChannelHandler {
new MqttFixedHeader(MqttMessageType.CONNECT, false, MqttQoS.AT_MOST_ONCE, false, 0);
MqttConnectVariableHeader connectVariableHeader =
new MqttConnectVariableHeader(PROTOCOL_NAME_MQTT_3_1_1, PROTOCOL_VERSION_MQTT_3_1_1, true, true, false,
0, false, false, 20);
MqttConnectPayload connectPayload = new MqttConnectPayload(clientId, null, null, userName, password);
0, false, false, 20, MqttProperties.NO_PROPERTIES);
MqttConnectPayload connectPayload = new MqttConnectPayload(clientId,
MqttProperties.NO_PROPERTIES,
null,
null,
userName,
password);
MqttConnectMessage connectMessage =
new MqttConnectMessage(connectFixedHeader, connectVariableHeader, connectPayload);
ctx.writeAndFlush(connectMessage);