socket.io unity authentication

[mahdiyaroraei]

Can you explain what is your solution for user authentication over socket.io?

[darrachequesne]

Middlewares may be used for user authentication:

• you can either reuse existing Express middlewares, like Passport.js (example here)

• or provide your own middleware

Client

const io = require("socket.io-client");
const socket = io({
  query: {
    token: "abcd"
  }
});
socket.on("connect", () => { /* success */ });
socket.on("error", () => { /* failure */ });

Server

const io = require("socket.io");
io.use((socket, next) => {
  if (socket.handshake.query.token === "abcd") {
    next();
  } else {
    next(new Error('invalid'));
  }
});
io.on('connect', socket => {});