When the requestmanager is busy fetching blocks, the queue might get
filled with multiple entries of the same root - since there is no
deduplication, requests containing the same root multiple times will be
sent out.
Also, because the items sit in the queue for a long time potentially,
the request might be stale by the time that the manager is ready with
the previous request.
This PR removes the queue and directly fetches the blocks to download
from the quarantine which solves both problems (the quarantine already
de-duplicates and is clean of stale information).
Removing the queue for blobs is left for a future PR.
Co-authored-by: tersec <tersec@users.noreply.github.com>
The helper function to compute delay until next light client sync task
can be useful from more general purpose contexts. Move to helpers, and
change it to return `Duration` instead of `BeaconTime` for flexibility.
- When syncing `LightClientUpdatesByRange`, and peer replies with
fewer periods than requested, no need to delay next request.
- When `FinalityUpdate` / `OptimisticUpdate` sync fails,
no need to retry immediately.
The `UpdatesByRange` API takes `startPeriod / count`, but is internally
called by `Slice`. Move the logic that converts from the `Slice` to the
caller to reduce complexity inside the used `doRequest` function.
* replace optimisticRoots table with field in BlockRef
* copyright year
* mark finalized blocks as verified on load
* Update beacon_chain/consensus_object_pools/block_dag.nim
Co-authored-by: Etan Kissling <etan@status.im>
* expand non-optimistic block checking to all pre-merge blocks; refactor markBlockVerified to use BlockRef rather than block root and remove superfluous caller in newPayload path replaced by addResolvedHeadBlock BlockRef construction
* don't treat finalized block specially; VALID status is sticky
---------
Co-authored-by: Etan Kissling <etan@status.im>
When doing sync for blocks older than
MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS, we skip the blobs by range
request, but we then pass en empty blob sequence to
validation, which then fails.
To fix this: Use an Option[Blobsidecars] to allow expressing the
distinction between "empty blob sequence" and "blobs unavailable". Use
the latter for "old" blocks, and don't attempt to run blob validation.
* final portion of non-trivial v1.3.0 bumps
Updates unchanged logic to latest v1.3.0 consensus-specs refs,
and cleans up surrounding sections / syncs comments, and so on.
```
https://github.com/ethereum/consensus-specs/(blob|tree)/(?!v1\.3\.0/)
```
* lint
* linebreak
Post-Deneb, when the request manager receives a missing block from a
peer, it needs to check if the corresponding blobs are available, and
if so pass them along. If they aren't available, the newly-fetched
block must be put in blobless quarantine (while the blobs are
retrieved, coming in next commit).
* Update sync to use post-decoupling RPCs
blob_sidecars_by_range returns a flat list of sidecars, which must
then be grouped per-slot.
* Add test for groupBlobs
* createBlobs: convert proc to func
Other changes:
Renamed the `EIP_4844_FORK_*` config constants to `DENEB_FORK_*` as
this matches the latest spec and it's already used in the official
Sepolia config.
While syncing the finalized portion of the chain, the execution client
cannot efficiently sync and most of the time returns `SYNCING` - in this
PR, we use CL-verified optmistic sync as long as the block is claimed to
be finalized, only occasionally updating the EL with progress.
Although a peer might lie about what is finalized and what isn't,
eventually we'll call the execution client - thus, all a dishonest
client can do is delay execution verification slightly. Gossip blocks in
particular are never assumed to be finalized.
Etan Kissling
tersec
henridf
Jacek Sieka
zah