JustSrv1
A lightweight WebSocket service for hands-on learning. Connect, experiment, and understand realtime communication.
⚡ Free for educational use · no registration required
What’s inside
This service is a sandbox for learning WebSocket concepts — from simple echo tests to pub/sub patterns.
🔁 Echo
Send any message and receive it back instantly. Perfect for testing your client setup.
📢 Broadcast
Messages sent to a channel are delivered to all connected clients — try building a mini chat.
🧪 Sandbox
No auth, no persistence, no limits. Break things and learn by doing.
Quick start
const socket = new WebSocket('ws://ws.justsrv1.xyz');
socket.onopen = () => {
console.log('connected to justsrv1');
socket.send('hello learning!');
};
socket.onmessage = (event) => {
console.log('received:', event.data);
};💡 The server echoes your message back — try it in the browser console.
📄 This site uses static pages: /index.html, /about.html, /privacy.html, /404.html.
Legacy extensionless aliases (e.g., /about) are supported for compatibility.