nimbus-eth2/beacon_chain/consensus_object_pools/light_client_pool.nim

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# beacon_chain
# Copyright (c) 2022 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
{.push raises: [Defect].}
# This implements the pre-release proposal of the libp2p based light client sync
# protocol. See https://github.com/ethereum/consensus-specs/pull/2802
import
# Status libraries
chronos,
# Beacon chain internals
../spec/datatypes/base
type
LightClientPool* = object
latestForwardedFinalitySlot*: Slot
## Latest finality update that was forwarded on libp2p gossip.
## Tracks `finality_update.finalized_header.slot`.
latestForwardedOptimisticSlot*: Slot
## Latest optimistic update that was forwarded on libp2p gossip.
## Tracks `optimistic_update.attested_header.slot`.
latestBroadcastedSlot*: Slot
## Latest slot for which updates were broadcasted on libp2p gossip.
## Tracks `update.signature_slot`.
broadcastGossipFut*: Future[void]
## Task to broadcast libp2p gossip. Started when a sync committee message
## is sent. Tracked separately from `handleValidatorDuties` to catch the
## case where `node.attachedValidators[].count == 0` at function start,
## and then a sync committee message gets sent from a remote VC via REST.