OutgoingMessageCorrelationData Property

Used by the sender of the request message to identify which request the response message is for when it is received.

Syntax

ANSI (Cross Platform)
char* GetOutgoingMessageCorrelationData(int iOutgoingMessageIndex);

Unicode (Windows)
LPWSTR GetOutgoingMessageCorrelationData(INT iOutgoingMessageIndex);
- (NSString*)outgoingMessageCorrelationData:(int)outgoingMessageIndex;

#define PID_MQTT_OUTGOINGMESSAGECORRELATIONDATA 30

IPWORKSIOT_EXTERNAL void* IPWORKSIOT_CALL IPWorksIoT_MQTT_Get(void *lpObj, int propid, int arridx, int *lpcbVal, int64 *lpllVal);

IPWORKSIOT_EXTERNAL int IPWORKSIOT_CALL IPWorksIoT_MQTT_CheckIndex(void *lpObj, int propid, int arridx);

Default Value

""

Remarks

Used by the sender of the request message to identify which request the response message is for when it is received.

Valid only for MQTT 5.

The OutgoingMessageIndex parameter specifies the index of the item in the array. The size of the array is controlled by the OutgoingMessageCount property.

This property is read-only and not available at design time.

Data Type

String
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IPWorks IoT 2020 C++ Edition - Version 20.0 [Build 8265]