web3-providers-ws

Connecting to an Ethereum Node

This feature allows you to connect to an Ethereum node using a WebSocket provider. The code sample demonstrates how to create a WebSocket provider and use it to get the current block number.

const Web3 = require('web3');
const Web3WsProvider = require('web3-providers-ws');

const wsProvider = new Web3WsProvider('wss://mainnet.infura.io/ws/v3/YOUR_INFURA_PROJECT_ID');
const web3 = new Web3(wsProvider);

web3.eth.getBlockNumber().then(console.log);

Subscribing to New Blocks

This feature allows you to subscribe to new block headers. The code sample demonstrates how to set up a subscription to receive updates whenever a new block is mined.

const Web3 = require('web3');
const Web3WsProvider = require('web3-providers-ws');

const wsProvider = new Web3WsProvider('wss://mainnet.infura.io/ws/v3/YOUR_INFURA_PROJECT_ID');
const web3 = new Web3(wsProvider);

web3.eth.subscribe('newBlockHeaders', (error, blockHeader) => {
  if (!error) {
    console.log(blockHeader);
  }
});

Subscribing to Pending Transactions

This feature allows you to subscribe to pending transactions. The code sample demonstrates how to set up a subscription to receive updates whenever a new transaction is pending.

const Web3 = require('web3');
const Web3WsProvider = require('web3-providers-ws');

const wsProvider = new Web3WsProvider('wss://mainnet.infura.io/ws/v3/YOUR_INFURA_PROJECT_ID');
const web3 = new Web3(wsProvider);

web3.eth.subscribe('pendingTransactions', (error, transactionHash) => {
  if (!error) {
    console.log(transactionHash);
  }
});