👀 Views: 87 💬 Answers: 1 📅 Created: 2025-06-12

node.js websocket ws reconnection JavaScript

I'm following best practices but I can't seem to get This might be a silly question, but I'm working on a project and hit a roadblock... I'm working on a real-time application using Node.js (v16) along with the `ws` library for WebSocket communications. I've implemented a WebSocket client that successfully connects to the server and receives messages. However, when the server goes down and comes back up, the reconnection logic doesn't seem to trigger as expected. I've set up an event listener for the `close` event, but the `reconnect` function is not being called. Here’s the relevant part of my client code: ```javascript const WebSocket = require('ws'); const socket = new WebSocket('ws://localhost:8080'); let reconnectInterval; socket.on('open', function() { console.log('Connected to the server'); }); socket.on('message', function(data) { console.log('Received:', data); }); socket.on('close', function() { console.log('Connection closed. Attempting to reconnect...'); reconnect(); }); function reconnect() { clearInterval(reconnectInterval); reconnectInterval = setInterval(() => { console.log('Trying to reconnect...'); socket = new WebSocket('ws://localhost:8080'); }, 5000); } ``` Additionally, I'm seeing errors like `behavior: WebSocket is not open: readyState 3 (CLOSED)` when I try to send a message after the reconnection logic has been triggered. It seems like the old socket instance is still being referenced. I've also tried closing the previous socket instance before creating a new one, but that hasn't worked. Does anyone have any insights on how to properly handle reconnections with WebSocket in Node.js? What best practices should I follow to ensure that the reconnection logic works reliably? I'd really appreciate any guidance on this. What am I doing wrong? I appreciate any insights! Could this be a known issue?