WebSocketServer for push push notifications examples

WebSocketServer.js

const port = 3000;
const ws = require("ws");
const server = require("http").createServer();
const connection = [];
const wss = new ws.WebSocketServer({ server });

server.listen(port, () => {
  console.log(`Server started on port ${server.address().port}`);
});

wss.on("connection", (ws) => {
  console.log("New connection");
  connection.push(ws);
  ws.send("Welcome to the chat room", ws);
  ws.on("message", (message) => {
    console.log(`Received message => ${message.toString()}`);
    connection.forEach((client) => {
      if (client !== ws && client.readyState === ws.OPEN) {
        client.send(message.toString());
      }
    });
  });
  ws.on("close", () => {
    console.log("Connection closed");
  });
});


// client code
// let ws = new WebSocket('ws://localhost:3000');
// ws.onmessage = msg => console.log(msg.data); 
// ws.send('Hello!');