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When an application has a message which must be sent with a subscription ID, it must add that ID into the message in the same way that the message type is added. The following code shows both being added prior to sending the message:
| Code Block | ||||
|---|---|---|---|---|
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sbuf->mtype = mtype; // add the message type |
...
sbuf->sub_id = subscribers[i] // add the subscription ID |
IMPORTANT: When reusing or resending a message, the application should ensure that the subscription ID field is cleared if it is not needed. The field is cleared by setting it to RMR_VOID_SUBID (defined in rmr.h)