Web Communication Back

In practices of web programming, we often need to communicate between the client and the server and provide immediate notifications from servers' push. There are three main ways to achieve it on the web: HTTP polling, Server-Sent Events (SSE), and web sockets.

HTTP polling means creating a fixed-time running task to poll messages from the server.

setInterval(() => fetch(url), 100); // polling things each 100 ms

The Server-Sent Events means creating a single-simplex channel to grasp notifications from servers:

(new EventSource(url)).onmessage = event => {
    // handle the notication
    console.log('Message from server', event.data);
};

Web sockets means creating a duplex channel to communicate with servers:

const socket = new WebSocket(url);
socket.addEventListener('open', event => {
    socket.send('hello');
});

socket.addEventListener('message', event => {
    console.log('Message from server', event.data);
});

Comments Copyright © aleen42 all right reserved, powered by aleen42

Empty Comments

Sign in GitHub

As the plugin is integrated with a code management system like GitLab or GitHub, you may have to auth with your account before leaving comments around this article.

Notice: This plugin has used Cookie to store your token with an expiration.

authorize