# beacon_chain # Copyright (c) 2018-2021 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].} import "."/[datatypes, digest, helpers] const # https://github.com/ethereum/eth2.0-specs/blob/v1.0.1/specs/phase0/p2p-interface.md#topics-and-messages topicBeaconBlocksSuffix* = "beacon_block/ssz" topicVoluntaryExitsSuffix* = "voluntary_exit/ssz" topicProposerSlashingsSuffix* = "proposer_slashing/ssz" topicAttesterSlashingsSuffix* = "attester_slashing/ssz" topicAggregateAndProofsSuffix* = "beacon_aggregate_and_proof/ssz" # https://github.com/ethereum/eth2.0-specs/blob/v1.0.1/specs/phase0/p2p-interface.md#eth2-network-interaction-domains MAX_CHUNK_SIZE* = 1 * 1024 * 1024 # bytes GOSSIP_MAX_SIZE* = 1 * 1024 * 1024 # bytes TTFB_TIMEOUT* = 5.seconds RESP_TIMEOUT* = 10.seconds defaultEth2TcpPort* = 9000 # This is not part of the spec yet! Keep in sync with BASE_RPC_PORT defaultEth2RpcPort* = 9190 # This is not part of the spec! But its port which uses Lighthouse DefaultEth2RestPort* = 5052 template eth2Prefix(forkDigest: ForkDigest): string = "/eth2/" & $forkDigest & "/" func getBeaconBlocksTopic*(forkDigest: ForkDigest): string = eth2Prefix(forkDigest) & topicBeaconBlocksSuffix func getVoluntaryExitsTopic*(forkDigest: ForkDigest): string = eth2Prefix(forkDigest) & topicVoluntaryExitsSuffix func getProposerSlashingsTopic*(forkDigest: ForkDigest): string = eth2Prefix(forkDigest) & topicProposerSlashingsSuffix func getAttesterSlashingsTopic*(forkDigest: ForkDigest): string = eth2Prefix(forkDigest) & topicAttesterSlashingsSuffix func getAggregateAndProofsTopic*(forkDigest: ForkDigest): string = eth2Prefix(forkDigest) & topicAggregateAndProofsSuffix # https://github.com/ethereum/eth2.0-specs/blob/v1.0.1/specs/phase0/validator.md#broadcast-attestation func compute_subnet_for_attestation*( committees_per_slot: uint64, slot: Slot, committee_index: CommitteeIndex): uint64 = # Compute the correct subnet for an attestation for Phase 0. # Note, this mimics expected Phase 1 behavior where attestations will be # mapped to their shard subnet. let slots_since_epoch_start = slot mod SLOTS_PER_EPOCH committees_since_epoch_start = committees_per_slot * slots_since_epoch_start (committees_since_epoch_start + committee_index.uint64) mod ATTESTATION_SUBNET_COUNT # https://github.com/ethereum/eth2.0-specs/blob/v1.0.1/specs/phase0/validator.md#broadcast-attestation func getAttestationTopic*(forkDigest: ForkDigest, subnetIndex: uint64): string = ## For subscribing and unsubscribing to/from a subnet. doAssert subnetIndex < ATTESTATION_SUBNET_COUNT eth2Prefix(forkDigest) & "beacon_attestation_" & $subnetIndex & "/ssz" func getENRForkID*(fork: Fork, genesis_validators_root: Eth2Digest): ENRForkID = let current_fork_version = fork.current_version fork_digest = compute_fork_digest( current_fork_version, genesis_validators_root) ENRForkID( fork_digest: fork_digest, next_fork_version: current_fork_version, next_fork_epoch: FAR_FUTURE_EPOCH)