MQTTConnectProperties (STRUCT)¶

TYPE MQTTConnectProperties : STRUCT

Connect properties (MQTT V5)

InOut:

Name	Type	Comment
udiSessionExpiryInterval	UDINT	Session Expiry Interval: Time in seconds a session retains after a disconnect.
wsAuthenticationMethod	WSTRING	Name of the authentication method
pbAuthenticationData	POINTER TO BYTE	Binary Data containing authentication data
udiAuthenticationDataSize	UDINT	Size of pbAuthenticationData
bRequestProblemInformation	BYTE	The Client uses this value to indicate whether the Reason String or User Properties are sent in the case of failures.
bRequestResponseInformation	BYTE	This value can be used to request the Server to return Response Information.
uiReceiveMaximum	UINT	The Client uses this value to limit the number of QoS 1 and QoS 2 publications that it is willing to process concurrently. There is no mechanism to limit the QoS 0 publications that the Server might try to send.
uiTopicAliasMaximum	UINT	This value indicates the highest value that the Server will accept as a Topic Alias sent by the Client.
udiMaximumPacketSize	UDINT	The Client uses the Maximum Packet Size to inform the Server that it will not process packets exceeding this limit.
userProperties	ARRAY [0..(MQTTParam.g_udiMaxUserProperties - 1)] OF MQTTStringPair	User defined properties