Wire protocol messages and transport handlers for the rebuild MVP:
Protocol messages (rebuild_transport.go):
- SessionControlMsg: epoch, sessionID, command, baseLSN, targetLSN,
snapshotID. Encode/Decode with fixed 37-byte wire format.
- SessionAckMsg: epoch, sessionID, phase, walAppliedLSN, baseComplete,
achievedLSN. Encode/Decode with fixed 34-byte wire format.
- MsgSessionControl (0x10) and MsgSessionAck (0x11) on control channel.
- SendSessionControl/SendSessionAck convenience functions.
Transport handlers:
- RebuildTransportServer: primary-side, streams all extent blocks as
MsgRebuildExtent frames (reusing existing rebuild message type),
ends with MsgRebuildDone.
- RebuildTransportClient: replica-side, receives base blocks and
routes through vol.ApplyRebuildSessionBaseBlock, marks base
complete on MsgRebuildDone.
4 transport tests:
- SessionControl wire round-trip
- SessionAck wire round-trip
- BaseBlockStreaming: full TCP loop, 1024 blocks streamed and verified
- SessionControlOverTCP: real TCP send/receive with accepted ack
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
pingqiuandClaude Opus 4.6
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