[CL-129] partial payloads: protobuf and ssz definitions - #252
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Registry wire numbers: SubOpts.requestsPartial=3 and supportsSendingPartial=4, ControlMessage.extensions=6, ControlExtensions.partialMessages=10, RPC.partial=10. Absent flags decode unset; legacy frames are unaffected. Extension payloads are raw SSZ bytes borrowed from the frame. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Checked zero-copy views for both PartialDataColumnSidecar layouts, the optional Fulu header, and PartsMetadata, plus prefix encoders that never gather cell payloads. Bitmaps must carry exactly the trusted row count; schedules beyond 128 rows are unsupported. PartialSidecarPlan validates its invariants at construction, so encoding cannot fail. Spec-derived byte fixtures pin both layouts independently of the encoders. Group ids carry version 0x00, with the little-endian slot appended on Gloas. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
PartialFrame prepares one RPC.partial frame per (topic, group): protobuf framing, SSZ offsets, and the row bitmap in a bounded prefix, with cells, proofs, and any Fulu header as retained ranges. A frame without a plan omits partialMessage entirely, carrying metadata only. Range lengths and metadata row counts are validated against the declared varints before admission. Extension fields are emitted in canonical order, so the segmented frame byte-matches buffa's reference encoder for both forks and for metadata-only frames. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
vladimir-ea
added this pull request to stack #246
September 11, 2026 20:37
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add encodings for
PartialDataColumnmessages