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Fake MEV execution for BSC

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This commit is contained in:
Kirill Fedoseev 2022-02-02 22:13:50 +03:00
parent 3e84b01f3b
commit 9586b78e10
2 changed files with 26 additions and 4 deletions
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3
oracle/docker-compose-helpers.yml
View File

@ -51,5 +51,8 @@ services:
ORACLE_MEV_FOREIGN_MAX_FEE_PER_GAS: '1000000000000' # 1000 gwei
ORACLE_MEV_FOREIGN_FLASHBOTS_RPC_URL: 'https://relay-goerli.flashbots.net'
ORACLE_MEV_FOREIGN_FLASHBOTS_AUTH_SIGNING_KEY: 82db7175932f4e6c8e45283b78b54fd5f195149378ec90d95b8fd0ec8bdadf1d
FAKE_MEV_RELAY_TX_SENDING: 'true'
FAKE_MEV_RELAY_NO_EIP1559: 'true'
COMMON_FOREIGN_GAS_PRICE_FALLBACK: 100000000000 # will essentially replace block base fee
restart: unless-stopped
entrypoint: yarn mev:sender:foreign

27
oracle/src/mevSender.js
View File

@ -15,9 +15,13 @@ if (process.argv.length < 3) {
}
const config = require(path.join('../config/', process.argv[2]))
const GasPrice = require('./services/gasPrice')
const { web3, mevForeign, validatorAddress } = config
const FAKE_MEV_RELAY_TX_SENDING = process.env.FAKE_MEV_RELAY_TX_SENDING === 'true'
const FAKE_MEV_RELAY_NO_EIP1559 = process.env.FAKE_MEV_RELAY_NO_EIP1559 === 'true'
let chainId = 0
let flashbotsProvider
@ -28,7 +32,9 @@ async function initialize() {
web3.currentProvider.urls.forEach(checkHttps(config.id))
chainId = await getChainId(web3)
flashbotsProvider = await mevForeign.getFlashbotsProvider(chainId)
if (!FAKE_MEV_RELAY_TX_SENDING) {
flashbotsProvider = await mevForeign.getFlashbotsProvider(chainId)
}
return runMain()
} catch (e) {
logger.error(e.message)
@ -65,7 +71,13 @@ async function main() {
return
}
const { baseFeePerGas: pendingBaseFee, number: pendingBlockNumber } = await getBlock(web3, 'pending')
const { baseFeePerGas, number: pendingBlockNumber } = await getBlock(web3, 'pending')
let pendingBaseFee = baseFeePerGas
if (FAKE_MEV_RELAY_TX_SENDING && FAKE_MEV_RELAY_NO_EIP1559) {
// emulate baseFee with the current gasPrice
await GasPrice.start('foreign', web3, true)
pendingBaseFee = GasPrice.gasPriceOptions().gasPrice
}
const bestJob = pickBestJob(jobs, pendingBaseFee)
if (!bestJob) {
@ -115,7 +127,7 @@ async function main() {
{ nonce, fromBlock: pendingBlockNumber, toBlock: pendingBlockNumber + mevForeign.bundlesPerIteration - 1 },
'Sending MEV bundles'
)
const txHash = await sendTx({
const opts = {
data: bestJob.data,
nonce,
value: bestJob.value,
@ -134,7 +146,14 @@ async function main() {
toBlock: pendingBlockNumber + mevForeign.bundlesPerIteration - 1,
logger
}
})
}
if (FAKE_MEV_RELAY_TX_SENDING) {
if (FAKE_MEV_RELAY_NO_EIP1559) {
opts.gasPriceOptions = { gasPrice: pendingBaseFee }
}
delete opts.mevOptions
}
const txHash = await sendTx(opts)
jobLogger.info({ txHash }, `Tx generated ${txHash} for event Tx ${bestJob.transactionReference}`)