WebSocket Post Server

Server: https://ws-post.herokuapp.com/

Repo: https://github.com/Artik-Man/ws-post-server

How to work with it?

1. Create connection to server

const socket = new WebSocket('wss://ws-post.herokuapp.com/');

You will get YOUR_ID in first message from the server:

{
    "to": "YOUR_ID",
    "from": "SERVER",
    "data": null,
    "error": null,
    "status": 200,
    "connections": ["USER1_ID", "USER2_ID", "..."]
}

Other users will receive the same message

2. Sending message

const message = JSON.stringify({
    to:   "SOME_USER",
    data: "SOME_DATA"
});
socket.send(message);

3. Messages format:

interface Message {
    to: string;             // your ID
    from: string;           // some user ID,
    data: any;              // data
    error: string;          // error message
    status: number;         // HTTP status
    
    connected?: string;     // just connected user
    disconneced?: string;   // just disconnected users
    connections?: string[]; // connected users
}

4. Status codes:

• 200 - OK
• 400 - Bad request
• 404 - User not found
• 423 - Connection error

Simple chat

const socket = new WebSocket('wss://ws-post.herokuapp.com/');
let users = [];

function send(to, data) {
    const message = { to, data };
    socket.send(JSON.stringify(message));
}

function startChat() {
    users.forEach(user => {
        send(user, "hello");
    });
}

socket.onmessage = function(resp) {
    const message = JSON.parse(resp.data);
    if (resp.data.from === 'SERVER') {
        if (resp.connections) {
            users = resp.connections;
            startChat();
        }
    } else {
        console.log("New message from: " + message.from + ": " + message.data);
    }
}