I got curious on how real time web apps work. So I did a couple of reading about WebSockets. Using the knowledge learned, I created a small chat app using javascript and node with WebSocket.
On the server:
const WebSocket = require('ws');
const wss = WebSocket.Server({port: 8888});
// listen for connection
wss.on('connection', ws => {
// To send a message to a client
ws.send('message here');
// listen for message
ws.on('message', (data) => {
// data contains the message from the clients
});
// listen for closing of connection
ws.on('close', () => {
});
})
On the client:
const ws = new WebSocket('ws://localhost:88888')'
// to send message to server
ws.send('message here');
// listen for open connection with the server
ws.addEventListener('open', () => {
console.log('Connected');
});
// add event listener to listen for message
ws.addEventListener('message', (data) => {
});
After cloning repo, go to the /server folder.
Then type:
node index.js
^ this willl start the server.
Once its running, visit index.html page. You can now chat.