merlox · November 6, 2022 16:07 · Endroid44 · Jan 8, 2023 · owade · Feb 6, 2023
diff --git a/simple-mev-bot.js b/simple-mev-bot.js
 // 1. Import everything
 import { Wallet, BigNumber, ethers, providers } from 'ethers'
 const { FlashbotsBundleProvider, FlashbotsBundleResolution } = require('@flashbots/ethers-provider-bundle')

 /*
 Mainnet
 const provider = new providers.JsonRpcProvider('https://eth-mainnet.g.alchemy.com/v2/cmHEQqWnoliAP0lgTieeUtwHi0KxEOlh')
 const wsProvider = new providers.WebSocketProvider('wss://eth-mainnet.g.alchemy.com/v2/cmHEQqWnoliAP0lgTieeUtwHi0KxEOlh')
 */

 // 2. Setup a standard provider in goerli
 const provider = new providers.JsonRpcProvider(
 	'https://eth-goerli.g.alchemy.com/v2/wOB3tqbHfs_RGAeFJqomylXrUOH_MrVT'
 )
 const wsProvider = new providers.WebSocketProvider(
 	'wss://eth-goerli.g.alchemy.com/v2/wOB3tqbHfs_RGAeFJqomylXrUOH_MrVT'
 )

 // 3. The unique ID for flashbots to identify you and build trust over time
 const authSigner = new Wallet(
 	'0x83565a9dafb10577ed43b2a0b911656e18fbc25cf35f211db891f23815ff7c45',
 	provider
 )
 // The address of the authSigner is 0x09Dad4e56b1B2A7eeD9C41691EbDD4EdF0D80a46

 const start = async () => {
 	// 4. Create the flashbots provider
 	const flashbotsProvider = await FlashbotsBundleProvider.create(
 		provider,
 		authSigner,
 		'https://relay-goerli.flashbots.net',
 	)

 	const GWEI = BigNumber.from(10).pow(9)
 	const LEGACY_GAS_PRICE = GWEI.mul(13)
 	const PRIORITY_FEE = GWEI.mul(100)
 	const blockNumber = await provider.getBlockNumber()
 	const block = await provider.getBlock(blockNumber)
 	const maxBaseFeeInFutureBlock =
 		FlashbotsBundleProvider.getMaxBaseFeeInFutureBlock(block.baseFeePerGas, 6) // 100 blocks in the future

 	console.log('maxBaseFeeInFutureBlock', String(maxBaseFeeInFutureBlock), String(maxBaseFeeInFutureBlock.div('100000000000000000')))

 	const amountInEther = '0.001'
 	// 5. Setup the transactions to send and sign
 	const signedTransactions = await flashbotsProvider.signBundle([
 		{ // Both transactions are the same but one is type 1 and the other type 2 after the gas changes
 			signer: authSigner,
 			transaction: {
 				to: '0x2c3fF32c7F6C7f83fFd13C76Cfef67C0E9811240',
 				type: 2,
 				maxFeePerGas: PRIORITY_FEE.add(maxBaseFeeInFutureBlock),
 				maxPriorityFeePerGas: PRIORITY_FEE,
 				data: '0x',
 				chainId: 5,
 				value: ethers.utils.parseEther(amountInEther),
 				// gasLimit: 300000,
 			},
 		},
 		// we need this second tx because flashbots only accept bundles that use at least 42000 gas.
 		{
 			signer: authSigner,
 			transaction: {
 				to: '0x2c3fF32c7F6C7f83fFd13C76Cfef67C0E9811240',
 				gasPrice: LEGACY_GAS_PRICE,
 				data: '0x',
 				value: ethers.utils.parseEther(amountInEther),
 				// gasLimit: 300000,
 			},
 		},
 	])

 	// 6. We run a simulation for the next block number with the signed transactions
 	console.log(new Date())
    console.log('Starting to run the simulation...')
 	const simulation = await flashbotsProvider.simulate(
 		signedTransactions,
 		blockNumber + 1,
 	)
 	console.log(new Date())

 	// 7. Check the result of the simulation
 	if (simulation.firstRevert) {
 		console.log(`Simulation Error: ${simulation.firstRevert.error}`)
 	} else {
 		console.log(
 			`Simulation Success: ${blockNumber}}`
 		)
 	}

 	// 8. Send 10 bundles to get this working for the next blocks in case flashbots doesn't become the block producer
 	for (var i = 1; i <= 10; i++) {
 		const bundleSubmission = await flashbotsProvider.sendRawBundle(
 			signedTransactions,
 			blockNumber + i
 		)
 		console.log('bundle submitted, waiting', bundleSubmission.bundleHash)

 		const waitResponse = await bundleSubmission.wait()
 		console.log(`Wait Response: ${FlashbotsBundleResolution[waitResponse]}`)
 		if (
 			waitResponse === FlashbotsBundleResolution.BundleIncluded ||
 			waitResponse === FlashbotsBundleResolution.AccountNonceTooHigh
 		) {
            console.log('Bundle included!')
 			process.exit(0)
 		} else {
 			console.log({
 				bundleStats: await flashbotsProvider.getBundleStats(
 					simulation.bundleHash,
 					blockNumber + 1,
 				),
 				userStats: await flashbotsProvider.getUserStats(),
 			})
 		}
 	}
 	console.log('bundles submitted')
 }

 start()
	// 1. Import everything
	import { Wallet, BigNumber, ethers, providers } from 'ethers'
	const { FlashbotsBundleProvider, FlashbotsBundleResolution } = require('@flashbots/ethers-provider-bundle')

	/*
	Mainnet
	const provider = new providers.JsonRpcProvider('https://eth-mainnet.g.alchemy.com/v2/cmHEQqWnoliAP0lgTieeUtwHi0KxEOlh')
	const wsProvider = new providers.WebSocketProvider('wss://eth-mainnet.g.alchemy.com/v2/cmHEQqWnoliAP0lgTieeUtwHi0KxEOlh')
	*/

	// 2. Setup a standard provider in goerli
	const provider = new providers.JsonRpcProvider(
	'https://eth-goerli.g.alchemy.com/v2/wOB3tqbHfs_RGAeFJqomylXrUOH_MrVT'
	)
	const wsProvider = new providers.WebSocketProvider(
	'wss://eth-goerli.g.alchemy.com/v2/wOB3tqbHfs_RGAeFJqomylXrUOH_MrVT'
	)

	// 3. The unique ID for flashbots to identify you and build trust over time
	const authSigner = new Wallet(
	'0x83565a9dafb10577ed43b2a0b911656e18fbc25cf35f211db891f23815ff7c45',
	provider
	)
	// The address of the authSigner is 0x09Dad4e56b1B2A7eeD9C41691EbDD4EdF0D80a46

	const start = async () => {
	// 4. Create the flashbots provider
	const flashbotsProvider = await FlashbotsBundleProvider.create(
	provider,
	authSigner,
	'https://relay-goerli.flashbots.net',
	)

	const GWEI = BigNumber.from(10).pow(9)
	const LEGACY_GAS_PRICE = GWEI.mul(13)
	const PRIORITY_FEE = GWEI.mul(100)
	const blockNumber = await provider.getBlockNumber()
	const block = await provider.getBlock(blockNumber)
	const maxBaseFeeInFutureBlock =
	FlashbotsBundleProvider.getMaxBaseFeeInFutureBlock(block.baseFeePerGas, 6) // 100 blocks in the future

	console.log('maxBaseFeeInFutureBlock', String(maxBaseFeeInFutureBlock), String(maxBaseFeeInFutureBlock.div('100000000000000000')))

	const amountInEther = '0.001'
	// 5. Setup the transactions to send and sign
	const signedTransactions = await flashbotsProvider.signBundle([
	{ // Both transactions are the same but one is type 1 and the other type 2 after the gas changes
	signer: authSigner,
	transaction: {
	to: '0x2c3fF32c7F6C7f83fFd13C76Cfef67C0E9811240',
	type: 2,
	maxFeePerGas: PRIORITY_FEE.add(maxBaseFeeInFutureBlock),
	maxPriorityFeePerGas: PRIORITY_FEE,
	data: '0x',
	chainId: 5,
	value: ethers.utils.parseEther(amountInEther),
	// gasLimit: 300000,
	},
	},
	// we need this second tx because flashbots only accept bundles that use at least 42000 gas.
	{
	signer: authSigner,
	transaction: {
	to: '0x2c3fF32c7F6C7f83fFd13C76Cfef67C0E9811240',
	gasPrice: LEGACY_GAS_PRICE,
	data: '0x',
	value: ethers.utils.parseEther(amountInEther),
	// gasLimit: 300000,
	},
	},
	])

	// 6. We run a simulation for the next block number with the signed transactions
	console.log(new Date())
	console.log('Starting to run the simulation...')
	const simulation = await flashbotsProvider.simulate(
	signedTransactions,
	blockNumber + 1,
	)
	console.log(new Date())

	// 7. Check the result of the simulation
	if (simulation.firstRevert) {
	console.log(`Simulation Error: ${simulation.firstRevert.error}`)
	} else {
	console.log(
	`Simulation Success: ${blockNumber}}`
	)
	}

	// 8. Send 10 bundles to get this working for the next blocks in case flashbots doesn't become the block producer
	for (var i = 1; i <= 10; i++) {
	const bundleSubmission = await flashbotsProvider.sendRawBundle(
	signedTransactions,
	blockNumber + i
	)
	console.log('bundle submitted, waiting', bundleSubmission.bundleHash)

	const waitResponse = await bundleSubmission.wait()
	console.log(`Wait Response: ${FlashbotsBundleResolution[waitResponse]}`)
	if (
	waitResponse === FlashbotsBundleResolution.BundleIncluded \|\|
	waitResponse === FlashbotsBundleResolution.AccountNonceTooHigh
	) {
	console.log('Bundle included!')
	process.exit(0)
	} else {
	console.log({
	bundleStats: await flashbotsProvider.getBundleStats(
	simulation.bundleHash,
	blockNumber + 1,
	),
	userStats: await flashbotsProvider.getUserStats(),
	})
	}
	}
	console.log('bundles submitted')
	}

	start()