2.2.1.2.5 DataHeader Payload

The DataHeader payload is the header portion of the data payload. The presence of this payload is flagged by the DATA (0x02) flag in the header (section 2.2.1.1), and it is sent by the Sender.


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DataSeqNum

DataSeqNum (2 bytes): A 16-bit unsigned integer that specifies lower 16 bits of the sequence number representing this data segment.