Module data_stream 

Data stream headers (subgroup, datagram, fetch, object). Draft-15 data stream header encoding and decoding.

Draft-15 data streams differ significantly from draft-14:

• Subgroup stream types encode flags in the type byte (0x10-0x17, 0x30-0x37)
• Priority is optional (absent when type & 0x20)
• Subgroup ID is optional (present when type & 0x04)
• Extensions flag (type & 0x01) affects per-object parsing
• Datagram types: 0x00 (normal), 0x02 (end-of-group), 0x04 (no object_id), 0x20 (status)
• Fetch objects use serialization_flags for delta encoding
• Object IDs in subgroups use delta encoding (first=absolute, subsequent=delta+1)

Structs

DatagramHeader

Datagram header for draft-15.

FetchHeader

Fetch stream header for draft-15.

SubgroupHeader

Subgroup stream header for draft-15.

SubgroupObject

One object within a draft-15 subgroup stream with its Object ID already resolved from the delta encoding.

SubgroupObjectReader

Stateful reader/writer for draft-15 subgroup objects.