QMqttServerConnectionProperties Class▲
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Header: QMqttServerConnectionProperties
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Since: Qt 5.12
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qmake: QT += mqtt
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Inherits: QMqttConnectionProperties
Detailed Description▲
When a connection has been established the server might send additional details about the connection properties. Use availableProperties() to identify properties set by the server. If a property is not set by the server, default values are assumed and can be obtained by invoking access functions of this instance.
Connection properties are part of the MQTT 5.0 specification and cannot be used when connecting with a lower protocol level. See QMqttClient::ProtocolVersion for more information.
Member Type Documentation▲
enum QMqttServerConnectionProperties::ServerPropertyDetail▲
flags QMqttServerConnectionProperties::ServerPropertyDetails
This enum type specifies the available properties set by the server or the client after establishing a connection.
|
Constant |
Value |
Description |
|---|---|---|
|
0x00000000 |
No property has been specified. |
|
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QMqttServerConnectionProperties::SessionExpiryInterval |
0x00000001 |
The number of seconds the server keeps the session after a disconnect. |
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QMqttServerConnectionProperties::MaximumReceive |
0x00000002 |
The maximum number of QoS 1 and 2 message the server is capable of managing concurrently. |
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QMqttServerConnectionProperties::MaximumQoS |
0x00000004 |
The maximum QoS level the server can understand. |
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QMqttServerConnectionProperties::RetainAvailable |
0x00000010 |
Specifies whether retained messages are supported. |
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QMqttServerConnectionProperties::MaximumPacketSize |
0x00000020 |
Specifies the maximum packet size including the message header and properties. |
|
QMqttServerConnectionProperties::AssignedClientId |
0x00000040 |
Specifies whether the server assigned a client identifier. |
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QMqttServerConnectionProperties::MaximumTopicAlias |
0x00000080 |
Specifies the maximum amount of topic aliases. |
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QMqttServerConnectionProperties::ReasonString |
0x00000100 |
Specifies a string providing more details on connection state. |
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QMqttServerConnectionProperties::UserProperty |
0x00000200 |
Specifies additional user properties. |