3000 explained code solutions for 75 technologies


nodejsHow to send message to client from websocket server


const WebSocketServer = require('ws');
const wss = new WebSocketServer.Server({ port: 8111 })

wss.on("connection", (ws,r) => {
  ws.send('This is a message to client');
});ctrl + c
require('ws')

import ws lib to create websocket server

new WebSocketServer.Server

create and launch websocket server with params

port:

port to listen on (in our case all network interfaces are going to be listened)

wss.on("connection"

what to do when someone connects to our server

ws.send(

send a message to client

This is a message to client

this message will be sent to websocket client