nimbus-eth2/scripts/test_merge_vectors.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.
# https://notes.ethereum.org/@9AeMAlpyQYaAAyuj47BzRw/rkwW3ceVY
# Monitor traffic: socat -v TCP-LISTEN:9550,fork TCP-CONNECT:127.0.0.1:8550
import
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std/options,
stew/results,
chronos,
../beacon_chain/eth1/eth1_monitor
from nimcrypto/utils import fromHex
from web3/engine_api_types import PayloadExecutionStatus
from ../beacon_chain/networking/network_metadata import Eth1Network
from ../beacon_chain/spec/datatypes/base import ZERO_HASH
from ../beacon_chain/spec/presets import Eth1Address, defaultRuntimeConfig
{.push raises: [Defect].}
# TODO hm, actually factor this out into a callable function
# and have a version with the result of the jwt secret slurp for testing purposes
proc readJwtSecret(jwtSecretFile: string): Result[seq[byte], cstring] =
# https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.9/src/engine/authentication.md#key-distribution
# If such a parameter is given, but the file cannot be read, or does not
# contain a hex-encoded key of at least 256 bits, the client should treat
# this as an error: either abort the startup, or show error and continue
# without exposing the authenticated port.
const MIN_SECRET_LEN = 32
try:
let lines = readLines(jwtSecretFile, 1)
if lines.len > 0:
# Secret JWT key is parsed in constant time using nimcrypto:
# https://github.com/cheatfate/nimcrypto/pull/44
let secret = utils.fromHex(lines[0])
if secret.len >= MIN_SECRET_LEN:
ok(secret)
else:
err("JWT secret not at least 256 bits")
else:
err("JWT secret file empty")
except IOError as exc:
err("JWT secret file could not be read from")
const
feeRecipient =
Eth1Address.fromHex("0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b")
web3Url = "http://127.0.0.1:8551"
proc run() {.async.} =
let
jwtSecret = some readJwtSecret("jwt.hex").get
eth1Monitor = Eth1Monitor.init(
defaultRuntimeConfig, db = nil, nil, @[web3Url],
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none(DepositContractSnapshot), none(Eth1Network), false, jwtSecret)
web3Provider = (await Web3DataProvider.new(
default(Eth1Address), web3Url, jwtSecret)).get
const feeRecipient =
Eth1Address.fromHex("0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b")
let
existingBlock = await web3Provider.getBlockByNumber(0)
await eth1Monitor.ensureDataProvider()
let
payloadId = await eth1Monitor.forkchoiceUpdated(
existingBlock.hash.asEth2Digest,
existingBlock.hash.asEth2Digest,
existingBlock.timestamp.uint64 + 12,
ZERO_HASH.data, # Random
feeRecipient)
payload = await eth1Monitor.getPayload(
array[8, byte] (payloadId.payloadId.get))
payloadStatus = await eth1Monitor.newPayload(payload)
fcupdatedStatus = await eth1Monitor.forkchoiceUpdated(
payload.blockHash.asEth2Digest,
payload.blockHash.asEth2Digest,
existingBlock.timestamp.uint64 + 24,
ZERO_HASH.data, # Random
feeRecipient)
payload2 = await eth1Monitor.getPayload(
array[8, byte] (fcupdatedStatus.payloadId.get))
payloadStatus2 = await eth1Monitor.newPayload(payload2)
fcupdatedStatus2 = await eth1Monitor.forkchoiceUpdated(
payload2.blockHash.asEth2Digest,
payload2.blockHash.asEth2Digest,
existingBlock.timestamp.uint64 + 36,
ZERO_HASH.data, # Random
feeRecipient)
doAssert payloadStatus.status == PayloadExecutionStatus.valid
doAssert fcupdatedStatus.payloadStatus.status == PayloadExecutionStatus.valid
doAssert payloadStatus2.status == PayloadExecutionStatus.valid
doAssert fcupdatedStatus2.payloadStatus.status == PayloadExecutionStatus.valid
waitFor run()