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Fix blob syncing for Electra (#6438) 

* Fix blob syncing for Electra

`BlobSidecar` requests on libp2p have a context prefix based on:

> The `<context-bytes>` field is calculated as context =
>     `compute_fork_digest(fork_version, genesis_validators_root)`

We currently only process blobs if that indicates Deneb, meaning that
on Electra we incorrectly report `InvalidContextBytes` and refuse to
process the blob response data.

Fix this, and also ensure that the code no longer needs maintenance
with every fork unrelated to blobs.

* fix
This commit is contained in:
Etan Kissling 2024-07-23 05:10:41 +02:00 committed by GitHub
parent 5762ebc249
commit ae0a1488b5
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GPG Key ID: B5690EEEBB952194
1 changed files with 17 additions and 46 deletions
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59
beacon_chain/sync/sync_protocol.nim
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@ -44,63 +44,34 @@ proc readChunkPayload*(
var contextBytes: ForkDigest
try:
await conn.readExactly(addr contextBytes, sizeof contextBytes)
except CancelledError as exc:
raise exc
except CatchableError:
return neterr UnexpectedEOF
static: doAssert ConsensusFork.high == ConsensusFork.Electra
if contextBytes == peer.network.forkDigests.phase0:
let res = await readChunkPayload(conn, peer, phase0.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
elif contextBytes == peer.network.forkDigests.altair:
let res = await readChunkPayload(conn, peer, altair.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
elif contextBytes == peer.network.forkDigests.bellatrix:
let res = await readChunkPayload(conn, peer, bellatrix.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
elif contextBytes == peer.network.forkDigests.capella:
let res = await readChunkPayload(conn, peer, capella.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
elif contextBytes == peer.network.forkDigests.deneb:
let res = await readChunkPayload(conn, peer, deneb.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
elif contextBytes == peer.network.forkDigests.electra:
let res = await readChunkPayload(conn, peer, electra.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
else:
let contextFork =
peer.network.forkDigests[].consensusForkForDigest(contextBytes).valueOr:
return neterr InvalidContextBytes
withConsensusFork(contextFork):
let res = await readChunkPayload(
conn, peer, consensusFork.SignedBeaconBlock)
if res.isOk:
return ok newClone(ForkedSignedBeaconBlock.init(res.get))
else:
return err(res.error)
proc readChunkPayload*(
conn: Connection, peer: Peer, MsgType: type (ref BlobSidecar)):
Future[NetRes[MsgType]] {.async: (raises: [CancelledError]).} =
var contextBytes: ForkDigest
try:
await conn.readExactly(addr contextBytes, sizeof contextBytes)
except CancelledError as exc:
raise exc
except CatchableError:
return neterr UnexpectedEOF
let contextFork =
peer.network.forkDigests[].consensusForkForDigest(contextBytes).valueOr:
return neterr InvalidContextBytes
if contextBytes == peer.network.forkDigests.deneb:
withConsensusFork(contextFork):
when consensusFork >= ConsensusFork.Deneb:
let res = await readChunkPayload(conn, peer, BlobSidecar)
if res.isOk:
return ok newClone(res.get)