The mapping of MessageTypes to UADP NetworkMessage type and the reference to the detailed definition is listed in Table 136.
Table 136 – UADP MessageType mapping
|
MessageType |
UADP NetworkMessage type |
Specification Reference |
|
DataSetMessage |
DataSetMessage payload |
|
|
DataSetMetaData |
Discovery DataSetMetaData announce |
Defined in 7.2.4.6.4. |
|
ApplicationDescription |
Discovery Application description announce |
Defined in 7.2.4.6.5. |
|
ServerEndpoints |
Discovery Publisher Endpoints announce |
Defined in 7.2.4.6.6. |
|
Status |
Discovery status announce |
Defined in 7.2.4.6.7. |
|
PubSubConnection |
Discovery PubSubConnection configuration announce |
Defined in 7.2.4.6.8. |
The discovery announce messages are required to send discovery information from the Publishers to the Subcribers. The probe messages are used for broker-less transport protocols like UDP or a Message Oriented Middleware where retained messages are not available.