The encoding of the UADP DataSet payload header is specified in Table 143. The payload header is unencrypted. This header shall be omitted if bit 6 of the UADPFlags is false.
Table 143 – UADP DataSet payload header
|
Name |
Type |
Description |
|
Count |
Byte |
Number of DataSetMessages contained in the NetworkMessage. The NetworkMessage shall contain at least one DataSetMessage if the NetworkMessage type is DataSetMessage payload. |
|
DataSetWriterIds |
UInt16 [Count] |
List of DataSetWriterIds contained in the NetworkMessage. The size of the list is defined by the Count. The DataSetWriterId identifies the PublishedDataSet and the DataSetWriter responsible for sending Messages for the DataSet. A Subscriber can skip DataSetMessages from DataSetWriters it does not expect DataSetMessages from. |