Synchronization

Synchronization brings the local node in sync with the network and feeds ready blocks into consensus.

Phases

Archive and full nodes follow a fixed phase pipeline:

1. CatchUpRecoverBlockHeaderFromDB

2. CatchUpSyncBlockHeader

3. CatchUpCheckpoint

4. CatchUpFillBlockBodyPhase

5. CatchUpSyncBlock

6. Normal

Each phase drives specific network requests and graph updates.

SynchronizationGraph

The sync graph stores all received headers and blocks and tracks their status:

• Header-only, graph-ready, block-ready.

• Parent and referee connectivity.

• Frontiers for not-ready blocks and old-era blocks.

Only blocks that are graph-ready and have full bodies are delivered to consensus.

State sync

Snapshot-based state sync uses:

• Snapshot manifest requests.

• Chunk requests/responses.

• Candidate selection and restoration helpers.

Key source files

• crates/mazzecore/core/src/sync/synchronization_phases.rs

• crates/mazzecore/core/src/sync/synchronization_graph.rs

• crates/mazzecore/core/src/sync/message/mod.rs

• crates/mazzecore/core/src/sync/state/mod.rs