MQTTWillProperties (STRUCT)¶

TYPE MQTTWillProperties : STRUCT

Will properties (MQTT V5)

InOut:

Name	Type	Comment
bPayloadFormatIndicator	BYTE	Payload Format: 0: Binary Data, 1: UTF-8
udiMessageExpiryInterval	UDINT	Expiry interval of the message in seconds
wsContentType	WSTRING	MIME style content type of the payload
wsResponseTopic	WSTRING	Some applications or standards might wish to run a Request/Response interaction over MQTT. The Resopnse Topic can be used for this purpose.
udiCorrelationDataSize	UDINT	Size of the correlation data buffer |paCorrelationData|
paCorrelationData	POINTER TO BYTE	Pointer to correlation data buffer. The Correlation Data is used by the sender of the Request Message to identify which request the Response Message is for when it is received.
udiWillDelayInterval	UDINT	The Server delays publishing the Client’s Will Message until the Will Delay Interval (in seconds) has passed or the Session ends, whichever happens first.
userProperties	ARRAY [0..(MQTTParam.g_udiMaxUserProperties - 1)] OF MQTTStringPair	User defined properties