Remove persistent Thing Shadow operation topic subscriptions.

AwsIotShadowError_t AwsIotShadow_RemovePersistentSubscriptions( IotMqttConnection_t mqttConnection,
                                                                const char * pThingName,
                                                                size_t thingNameLength,
                                                                uint32_t flags );

Passing the flag AWS_IOT_SHADOW_FLAG_KEEP_SUBSCRIPTIONS to AwsIotShadow_DeleteAsync, AwsIotShadow_GetAsync, AwsIotShadow_UpdateAsync, or their blocking versions. causes the Shadow operation topic subscriptions to be maintained for future calls to the same function. If a persistent subscription for a Shadow topic are no longer needed, this function may be used to remove it.

Parameters

[in]	mqttConnection	The MQTT connection associated with the persistent subscription.
[in]	pThingName	The Thing Name associated with the persistent subscription.
[in]	thingNameLength	The length of `pThingName`.
[in]	flags	Flags that determine which subscriptions to remove. Valid values are the bitwise OR of the following individual flags: AWS_IOT_SHADOW_FLAG_REMOVE_DELETE_SUBSCRIPTIONS AWS_IOT_SHADOW_FLAG_REMOVE_GET_SUBSCRIPTIONS AWS_IOT_SHADOW_FLAG_REMOVE_UPDATE_SUBSCRIPTIONS

Returns

On success:

AWS_IOT_SHADOW_SUCCESS

If an MQTT UNSUBSCRIBE packet cannot be sent, one of the following:

Note: AwsIotShadow_Cleanup removes all persistent subscriptions as well.

Warning: This function is not safe to call with any in-progress operations! It also does not affect delta and updated callbacks registered with AwsIotShadow_SetDeltaCallback and AwsIotShadow_SetUpdatedCallback, respectively. (See documentation for those functions on how to remove their callbacks).